Corn planting machine capable of controlling planting spacing

Abstract

The invention discloses a corn planter capable of controlling planting spacing, a screw rod is in threaded connection with a linkage frame, the output end part of the linkage frame is provided with a blocking plate, and the blocking plate is located on seed outlet mechanisms on two sides. Corn seeds are placed in the trough in advance, the equipment is pushed to move during planting, part of the seeds are conveyed into the seed trough after the walking wheels rotate, then the equipment is pushed to plant according to a planting field, the lapping plates on the seed trough are in contact with soil in sequence when the equipment is pushed, and the seeds are discharged in the contact process. When the planting distance of the seeds needs to be adjusted, the screw rod is firstly rotated, the linkage frame on the screw rod can move along the screw rod, the blocking plate on the linkage frame can block the corresponding inclined groove, and the falling batch of the seeds can be controlled when the seed groove rotates, so that the adjustment of the seed distance is realized.

Description

Technical Field

[0001] The present application relates to the technical field of corn planters, and in particular to a corn planter capable of controlling the planting spacing. Background Art

[0002] Maize is a plant of the Poaceae family and the genus Zea, commonly known as corn. Genetically modified corn is sweet and crisp. Maize is an annual tall herb with an upright stalk, usually unbranched, 1-4 meters high, leaf sheaths with transverse veins, membranous ligules, about 2 mm long, flat and wide leaves, large terminal male panicles, twin male spikelets, up to 1 cm long, and spherical or oblate caryopsis, generally 5-10 mm long. To increase the yield of maize, the planting density can be reasonably increased. The planting method is generally promoted in areas with good soil fertility and irrigation conditions. The planting density is generally 3000-3500 plants per mu, and the planting density of dense-tolerant varieties is higher, which can reach 4500-5000 plants per mu. The density varies with different planting methods. The row spacing of mechanical sowing is generally 60-70 cm, and the row spacing of manual sowing is mostly 50-60 cm. It can also be planted in large and small ridges or wide and narrow rows. Increasing planting density is an effective measure to increase production, but it requires the selection of varieties with good density tolerance, as well as the corresponding increase in fertilizer application and the use of balanced fertilization formulas.

[0003] Corn is widely planted, and the planting area is usually large. Machines are usually needed to assist in planting corn. Box-type seeders are commonly used, but these seeders are large in size, and the spacing between seeds is fixed during planting. The planting spacing between corns cannot be easily adjusted. Since the seeder needs to be used in conjunction with a locomotive, it is not easy to use in small planting areas, and thus cannot meet the portable use requirements for small-scale corn planting. Summary of the invention

[0004] One of the purposes of the present application is to provide a corn planter capable of controlling the planting spacing.

[0005] To achieve the above objectives, the technical solution adopted in the present application is: a corn planter with controllable planting spacing, comprising a frame, a panel, a material port, a push frame and a walking wheel, a material trough is opened inside the frame, an output port position of the material trough is detachably connected with a support rod, a through groove is opened inside the support rod, a spiral push plate is rotatably connected inside the through groove, the input end of the spiral push plate is connected to the output end of the walking wheel, a seed groove is rotatably connected on the support rod, a guide port is opened on the side wall of the seed groove, a seed discharging mechanism is slidably connected in the guide port of the seed groove, a side cover is detachably connected to the output end of the seed discharging mechanism, a blocking cover is detachably connected to the top end of the side cover, a screw is arranged outside the seed groove, a linkage frame is threadedly connected to the screw, a blocking plate is arranged at the output end of the linkage frame, and the blocking plate is located on the seed discharging mechanism on both sides.

[0006] Preferably, a limiting frame is provided on the seed groove, and the limiting frame is vertically arranged on the seed groove. A linkage frame is slidably connected to the limiting frame, and the linkage frame is arranged in an S shape as a whole. The blocking plate on the linkage frame is arranged along the side edge of the seed groove, and the output end of the blocking plate is located on the side of the seed output mechanism.

[0007] Preferably, a connecting rod is detachably connected to the walking wheel of the push frame, and the connecting rod is connected to the push frame in a through-hole. A first pulley is detachably connected to the outer end of the connecting rod, a transmission belt is sleeved on the first pulley, and the other end of the transmission belt is sleeved on the corresponding second pulley, and the second pulley is detachably connected to the input end of the spiral push plate.

[0008] Preferably, one end of the support rod is located inside the material trough of the frame, and an opening is provided on the end of the support rod located in the material trough. The opening and the material trough are interconnected, and the width of the opening is the same as the width of the material trough at the connection position. The opening is provided on both side edges of the support rod, and the opening is generally in a U-shaped shape.

[0009] Preferably, the seed dispensing mechanism includes a nozzle, an outer cover is provided on the nozzle, a linkage rod is provided in the outer cover, a first spring is sleeved on the linkage rod, a strap is provided on one end of the linkage rod, a connecting seat is provided on the linkage rod inside the nozzle, a conical cylinder is provided on the connecting seat, a placement groove is provided in the connecting seat, a vertical opening is provided on the side edge of the placement groove, an inclined groove is provided on the side edge of the nozzle, and the inclined groove is communicated with the placement groove.

[0010] Preferably, the connecting seat is connected with side covers, the side covers are respectively located on both sides of the vertical opening of the connecting seat, the side covers are slidably connected to both sides of the inclined slot of the outlet, and the vertical opening is communicated with the inclined slot.

[0011] Preferably, the conical tube is located inside the guide opening, the diameter of the large port of the conical tube is the same as the inner diameter of the guide opening, and the large port of the conical tube faces the inner space of the seed groove.

[0012] Preferably, the small port of the conical cylinder and the placement groove of the connecting seat are interconnected, the placement groove of the connecting seat is arranged in an arc shape as a whole, and the bottom side port of the placement groove faces the vertical opening.

[0013] Preferably, the outer cover is arranged on the outside of the outlet nozzle, the outlet nozzle is arranged in a cone shape as a whole, the outlet nozzle and the guide port are interconnected, and the linkage rod inside the outlet nozzle is arranged in a T shape as a whole.

[0014] Preferably, the diameter of the lower end of the linkage rod is the same as the inner diameter of the outer cover, the first spring is located on the linkage rod inside the outer cover, and the strap connected to the linkage rod is arranged in a circular plate shape as a whole.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] The corn planting machine capable of controlling the planting spacing is provided with a pushing frame on the frame, a walking wheel can be installed on the pushing frame, and a seed trough can be installed on the frame. When the device is pushed to move as a whole, the seed trough and the walking wheel can rotate at the same time, a connecting rod is provided on the walking wheel, a first pulley is provided on the connecting rod, and a second pulley is provided on a spiral pushing plate. A transmission belt is sleeved on the pulley, and when the walking wheel moves, the spiral pushing plate is transmitted, and the corn pre-placed in the trough can be transported to the seed trough, and a nozzle is provided on the seed trough, and a linkage rod is slidably connected in the nozzle, and a slat is provided on the linkage rod. When the slat contacts the ground, due to the gravity of the equipment, the linkage rod on the slat will move toward the inside of the nozzle, and the linkage rod will push the connecting seat and the cone barrel to move. When the seeds enter the seed trough, they will enter the conical cylinder, and the corn seeds inside the conical cylinder will fall into the placement trough. As the connecting seat moves, the vertical opening of the connecting seat will move to the input port position of the inclined trough, and the vertical opening will not be blocked. The seeds will enter the inclined trough through the vertical opening and be discharged through the inclined trough at last, so as to realize sowing. When the planting spacing of the seeds needs to be adjusted, the screw rod is adjusted in advance, and the blocking plate will move along the screw rod to block the corresponding inclined trough. After the seed trough rotates one circle, the seeds are discharged twice instead of four times. The seed trough is cylindrical as a whole, so the seed discharge spacing can be adjusted. The setting adjustment method is simple and easy to operate. The equipment is small in size and easy to carry, which is convenient for personnel to use.

[0017] The corn planting machine capable of controlling the planting spacing has an outer cover arranged on the outlet, and when a linkage rod is installed inside the outer cover, the linkage rod will move in and out along the outlet, and a slat is arranged on the linkage rod, which has a large area. After the slat contacts the soil, the linkage rod can move, so as to avoid the slat being inserted into the soil and causing the linkage rod to be unable to move. When the linkage rod moves toward the inside of the outlet, the linkage rod will compress the first spring, and as the movable slat of the seed groove moves away from the soil, after the slat is away from the soil, the slat is not pushed, and the first spring will push the linkage rod as a whole in the opposite direction due to its own action, and the linkage rod will reset, thereby resetting the connecting seat and the conical cylinder, and the vertical mouth will move away from the inclined groove again, so as to avoid continuous discharge of seeds and limit the number of seeds discharged. During the planting process, the inclined groove will be blocked by the blocking plate, and the seeds will not be discharged after being blocked by the blocking plate. After the planting is completed, the seeds can be taken out separately, so as not to affect the planting during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 .

[0019] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 .

[0020] Figure 3It is a structural schematic diagram of the support rod of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the screw in the present invention.

[0022] Figure 5 It is a schematic diagram of the structure of the conical tube in the present invention.

[0023] Figure 6 It is a schematic diagram of the structure of the baffle cover in the present invention.

[0024] Figure 7 For the present invention Figure 2 Schematic diagram of the enlarged structure of area A in the middle.

[0025] In the figure: 1, panel; 2, material opening; 3, frame; 4, material trough; 5, push frame; 6, walking wheel; 7, seed trough; 8, transmission belt; 9, first pulley; 10, connecting rod; 11, opening; 12, through groove; 13, spiral push plate; 14, second pulley; 15, guide port; 16, support rod; 17, screw rod; 18, limit frame; 19, linkage frame; 20, blocking plate; 21, seed discharging mechanism; 211, conical cylinder; 212, connecting seat; 213, outer cover; 214, linkage rod; 215, outlet; 216, board; 217, first spring; 218, placement groove; 219, inclined groove; 210, vertical opening; 22, blocking cover; 23, side cover. DETAILED DESCRIPTION

[0026] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0029] like Figures 1 to 7As shown, the present invention provides a corn planter capable of controlling the planting spacing, comprising a frame 3, a panel 1, a material port 2, a push frame 5 and a running wheel 6, a material trough 4 is provided inside the frame 3, an output port position of the material trough 4 is detachably connected with a support rod 16, a through slot 12 is provided inside the support rod 16, a spiral push plate 13 is rotatably connected inside the through slot 12, an input end of the spiral push plate 13 is connected to an output end of the running wheel 6, a seed trough 7 is rotatably connected to the support rod 16, a guide port 15 is provided on the side wall of the seed trough 7, a seed dispensing mechanism 21 is slidably connected in the guide port 15 of the seed trough 7, a side cover 23 is detachably connected to the output end of the seed dispensing mechanism 21, a blocking cover 22 is detachably connected to the top end of the side cover 23, a screw 17 is provided outside the seed trough 7, a linkage frame 19 is threadedly connected to the screw 17, a blocking plate 20 is provided at the output end of the linkage frame 19, and the blocking plate 20 is located on the seed dispensing mechanism 21 on both sides. Place the corn seeds in the trough 4 in advance. When planting, push the equipment to move first. After the running wheel 6 rotates, a part of the seeds will be transferred to the seed trough 7. Then push the equipment according to the planting site for planting. When pushing the equipment, the boards 216 on the seed trough 7 will contact the soil in turn. The seeds will be discharged during the contact process. After they are away, the seed discharge can be stopped, thereby realizing automatic discharge of seeds. When the planting spacing of seeds needs to be adjusted, the screw 17 is first rotated, and the linkage frame 19 on the screw 17 will move along the screw 17. The blocking plate 20 on the linkage frame 19 will block the corresponding inclined groove 219. When the seed trough 7 rotates, the falling batches of seeds will be controlled, thereby realizing the adjustment of the seed spacing.

[0030] A limit frame 18 is arranged on the seed groove 7, and the limit frame 18 is vertically arranged on the seed groove 7. A linkage frame 19 is slidably connected to the limit frame 18. The linkage frame 19 is arranged in an S shape as a whole. A blocking plate 20 on the linkage frame 19 is arranged along the side edge of the seed groove 7, and the output end of the blocking plate 20 is located on the side of the seed output mechanism 21. By setting the limit frame 18, the limit frame 18 can limit the movement of the linkage frame 19, and the linkage frame 19 will not rotate with the screw rod 17, and the linkage frame 19 can drive the blocking plate 20 away from or close to the inclined groove 219.

[0031] The running wheel 6 of the push frame 5 is detachably connected with a connecting rod 10, which is connected to the push frame 5 through and through, and the outer end of the connecting rod 10 is detachably connected with a first pulley 9, on which a transmission belt 8 is sleeved, and the other end of the transmission belt 8 is sleeved on a corresponding second pulley 14, and the second pulley 14 is detachably connected to the input end of the spiral push plate 13. The push frame 5 can drive the frame 3 as a whole, thereby promoting the overall movement of the frame 3. When the running wheel 6 on the push frame 5 is connected to the first pulley 9, the first pulley 9 can be connected to the second pulley 14 through the transmission belt 8, thereby realizing the transmission of the spiral push plate 13.

[0032] During implementation, a push frame 5 is arranged on the frame 3, a walking wheel 6 can be installed on the push frame 5, and a seed trough 7 can be installed on the frame 3. When the pushing device is moved as a whole, the seed trough 7 and the walking wheel 6 can rotate at the same time. A connecting rod 10 is arranged on the walking wheel 6, and a first pulley 9 is arranged on the connecting rod 10. The second pulley 14 is arranged on the spiral push plate 13. By sleeved with a transmission belt 8 on the pulley, the walking wheel 6 will transmit the spiral push plate 13 when it moves, and the corn pre-placed in the trough 4 can be transported to the seed trough 7. A nozzle 215 is arranged on the seed trough 7, and a linkage rod 214 is slidably connected in the nozzle 215. A bridging plate 216 is arranged on the linkage rod 214. When the bridging plate 216 contacts the ground, due to the gravity of the equipment, the linkage rod 214 on the bridging plate 216 will appear to move toward the inside of the nozzle 215, and the linkage rod 214 will push the connecting seat 212 and the conical cylinder 21 1 moves, and when the seeds enter the seed groove 7, the seeds will enter the conical cylinder 211, and the corn seeds inside the conical cylinder 211 will fall into the placement groove 218. With the movement of the connecting seat 212, the vertical opening 210 of the connecting seat 212 will move to the input port position of the inclined groove 219, and the vertical opening 210 will not be blocked. The seeds will enter the inclined groove 219 through the vertical opening 210 and finally be discharged through the inclined groove 219, thereby realizing sowing. When it is necessary to adjust the planting spacing of the seeds, the screw rod 17 is adjusted in advance, and the blocking plate 20 will move along the screw rod 17 to block the corresponding inclined groove 219. After the seed groove 7 rotates one circle, the seeds are discharged twice instead of four times. The seed groove 7 is arranged in a cylindrical shape as a whole, so the seed discharge spacing can be adjusted. The setting adjustment method is simple and easy to operate, and the device is small in size and easy to carry, which is convenient for personnel to use.

[0033] One end of the support rod 16 is located inside the trough 4 of the frame 3, and an opening 11 is provided on the end of the support rod 16 located inside the trough 4. The opening 11 and the trough 4 are mutually connected, and the width of the opening 11 is the same as the width of the trough 4 at the connection position. The opening 11 is provided on the side edges of both sides of the support rod 16, and the opening 11 is arranged in a square shape as a whole. The support rod 16 can limit the seed trough 7, and the seed trough 7 will rotate on the support rod 16. When the support rod 16 is located inside the seed trough 7, the seeds transported inside the support rod 16 can enter the seed trough 7.

[0034] The seed dispensing mechanism 21 includes a nozzle 215, on which an outer cover 213 is provided, and a linkage rod 214 is provided inside the outer cover 213. A first spring 217 is sleeved on the linkage rod 214, and a strap 216 is provided on one end of the linkage rod 214. A connecting seat 212 is provided on the linkage rod 214 inside the nozzle 215, and a conical cylinder 211 is provided on the connecting seat 212. A placement groove 218 is provided in the connecting seat 212, and a vertical opening 210 is provided on the side edge of the placement groove 218. An inclined groove 219 is provided on the side edge of the nozzle 215, and the inclined groove 219 is communicated with the placement groove 218. By setting the outlet 215, the linkage rod 214 in the outlet 215 will move, and when the linkage rod 214 moves, it can drive the connecting seat 212 to move, and the vertical opening 210 of the connecting seat 212 can be moved to the inclined groove 219 position. When it moves to the inclined groove 219 position, the seeds can be discharged to the soil through the inclined groove 219 for planting.

[0035] The connecting seat 212 is connected with a side cover 23, which is located at both sides of the vertical opening 210 of the connecting seat 212, and the side cover 23 is slidably connected to both sides of the inclined slot 219 of the outlet 215, and the vertical opening 210 is connected to the inclined slot 219. The side cover 23 can limit the connecting seat 212, prevent the connecting seat 212 from rotating, and prevent the planting from running into the outlet 215.

[0036] The conical barrel 211 is located inside the guide opening 15, and the diameter of the large end of the conical barrel 211 is the same as the inner diameter of the guide opening 15, and the large end of the conical barrel 211 faces the inner space of the seed groove 7. The installation of the conical barrel 211 can be realized through the guide opening 15, and when the conical barrel 211 moves in the guide opening 15, it can prevent the seeds from running into the connection gap between the conical barrel 211 and the seed groove 7, thereby avoiding affecting the movement of the conical barrel 211, and the seeds can also be moved into the connection seat 212 through the conical barrel 211.

[0037] The small port of the conical tube 211 is connected to the placement groove 218 of the connecting seat 212, and the placement groove 218 of the connecting seat 212 is arranged in an arc shape as a whole, and the bottom side port of the placement groove 218 faces the vertical port 210. The movement of seeds can be achieved through the communication between the conical tube 211 and the placement groove 218.

[0038] The outer cover 213 is arranged outside the outlet 215, the outlet 215 is arranged in a cone shape, the outlet 215 and the guide port 15 are mutually connected, and the linkage rod 214 inside the outlet 215 is arranged in a T shape. The linkage rod 214 can squeeze the first spring 217, so as to facilitate the later reset.

[0039] The diameter of the lower end of the linkage rod 214 is the same as the inner diameter of the outer cover 213. The first spring 217 is located on the linkage rod 214 inside the outer cover 213. The strap 216 connected to the linkage rod 214 is arranged in a circular plate shape as a whole. The strap 216 can contact the ground.

[0040] In the implementation, by setting the outer cover 213 on the outlet 215, when the linkage rod 214 is installed inside the outer cover 213, the linkage rod 214 will move inside and outside along the outlet 215, and a plate 216 is set on the linkage rod 214. The plate 216 has a large area. After the plate 216 contacts the soil, the linkage rod 214 can be moved, so as to avoid the plate 216 being inserted into the soil and causing the linkage rod 214 to be unable to move. When the linkage rod 214 moves into the outlet 215, the linkage rod 214 will compress the first spring 217, and as the movable plate 216 of the seed groove 7 moves Then, it is moved away from the soil and away from the rear plate 216 so that it is not pushed. The first spring 217 will push the entire linkage rod 214 in the reverse direction due to its own action, and the linkage rod 214 will be reset, thereby resetting the connecting seat 212 and the conical cylinder 211, and the vertical mouth 210 will be away from the inclined groove 219 again, so as to avoid the continuous discharge of seeds and limit the number of seeds discharged. During the planting process, the inclined groove 219 will be blocked by the blocking plate 20. After being blocked by the blocking plate 20, the seeds will not be discharged. After the planting is completed, the seeds can be taken out separately, so that it will not affect the planting when in use.

[0041] The working principle of the present invention is as follows: by arranging a push frame 5 on the frame 3, a walking wheel 6 can be installed on the push frame 5, and a seed trough 7 can be installed on the frame 3. When the pushing device is moved as a whole, the seed trough 7 and the walking wheel 6 can rotate at the same time. A connecting rod 10 is arranged on the walking wheel 6, and a first pulley 9 is arranged on the connecting rod 10. The second pulley 14 is arranged on the spiral push plate 13. By sleeved with a transmission belt 8 on the pulley, the walking wheel 6 will transmit the spiral push plate 13 when it moves, and the corn pre-placed in the trough 4 can be transported to the seed trough 7. A nozzle 215 is arranged on the seed trough 7, and a linkage rod 214 is slidably connected in the nozzle 215. A strap 216 is arranged on the linkage rod 214. When the strap 216 contacts the ground, due to the gravity of the equipment, The linkage rod 214 on the slat 216 will move toward the inside of the outlet 215, and the linkage rod 214 will push the connecting seat 212 and the conical cylinder 211 to move. When the seeds enter the seed groove 7, the seeds will enter the conical cylinder 211, and the corn seeds inside the conical cylinder 211 will fall into the placement groove 218. As the connecting seat 212 moves, the vertical opening 210 of the connecting seat 212 will move to the input port position of the inclined groove 219, and the vertical opening 210 will not be blocked. The seeds will enter the inclined groove 219 through the vertical opening 210 and finally be discharged through the inclined groove 219, thereby realizing sowing. When it is necessary to adjust the planting spacing of the seeds, the screw 17 is adjusted in advance, and the blocking plate 20 will move along The screw rod 17 moves to block the corresponding inclined groove 219. After the seed groove 7 rotates one circle, the number of seeds discharged is changed from four to two. The seed groove 7 is arranged in a cylindrical shape as a whole, so the spacing of the seeds discharged can be adjusted. The adjustment method is simple and easy to operate. The device is small in size and easy to carry, which is convenient for personnel to use. By arranging an outer cover 213 on the outlet 215 and installing a linkage rod 214 inside the outer cover 213, the linkage rod 214 will move inside and outside along the outlet 215. A take-up plate 216 is arranged on the linkage rod 214. The take-up plate 216 has a large area. After the take-up plate 216 contacts the soil, the movement of the linkage rod 214 can be realized, so as to avoid the take-up plate 216 being inserted into the soil and causing the linkage rod 214 to be unable to move. When the movable rod 214 moves toward the inside of the outlet 215, the linkage rod 214 will compress the first spring 217. As the movable bridge 216 of the seed groove 7 will subsequently move away from the soil, and the bridge 216 will not be pushed away, the first spring 217 will push the linkage rod 214 as a whole in the opposite direction due to its own action, and the linkage rod 214 will be reset, thereby resetting the connecting seat 212 and the conical cylinder 211, and the vertical mouth 210 will be away from the inclined groove 219 again, thereby avoiding continuous discharge of seeds and limiting the number of seeds discharged. During the planting process, the inclined groove 219 will be blocked by the blocking plate 20. After being blocked by the blocking plate 20, the seeds will not be discharged. After the planting is completed, the seeds can be taken out separately, so that it will not affect the planting when in use.

[0042] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. The above embodiments and the description only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A corn planting machine capable of controlling the planting spacing, comprising a frame (3), a panel (1), a feed opening (2), a push frame (5) and a running wheel (6), characterized in that: A material trough (4) is provided inside the frame (3); a support rod (16) is detachably connected to the output port of the material trough (4); a through slot (12) is provided inside the support rod (16); a spiral push plate (13) is rotatably connected inside the through slot (12); an input end of the spiral push plate (13) is connected to the output end of the running wheel (6); a seeding slot (7) is rotatably connected to the support rod (16); a guide port (15) is provided on the side wall of the seeding slot (7); A seed discharging mechanism (21) is slidably connected in the guide port (15) of the seed discharging mechanism (21), a side cover (23) is detachably connected to the output end of the seed discharging mechanism (21), a blocking cover (22) is detachably connected to the top of the side cover (23), a screw rod (17) is arranged outside the seed discharging groove (7), a linkage frame (19) is threadedly connected to the screw rod (17), a blocking plate (20) is arranged at the output end of the linkage frame (19), and the blocking plate (20) is located on the seed discharging mechanism (21) on both sides.

2. A corn planting machine capable of controlling planting spacing as claimed in claim 1, characterized in that: A limit frame (18) is arranged on the seed groove (7), and the limit frame (18) is vertically arranged on the seed groove (7). A linkage frame (19) is slidably connected to the limit frame (18), and the linkage frame (19) is arranged in an S shape as a whole. A blocking plate (20) on the linkage frame (19) is arranged along the side edge of the seed groove (7), and an output end of the blocking plate (20) is located on the side of the seed output mechanism (21).

3. A corn planting machine capable of controlling planting spacing as claimed in claim 1, characterized in that: A connecting rod (10) is detachably connected to the walking wheel (6) of the push frame (5), and the connecting rod (10) is connected to the push frame (5). A first pulley (9) is detachably connected to the outer end of the connecting rod (10), and a transmission belt (8) is sleeved on the first pulley (9). The other end of the transmission belt (8) is sleeved on a corresponding second pulley (14), and the second pulley (14) is detachably connected to the input end of the spiral push plate (13).

4. A corn planting machine capable of controlling planting spacing as claimed in claim 1, characterized in that: One end of the support rod (16) is located inside the material trough (4) of the frame (3); an opening (11) is provided on the end of the support rod (16) located inside the material trough (4); the opening (11) and the material trough (4) are interpenetrating; the width of the opening (11) is the same as the width of the material trough (4) at the connection position; the opening (11) is provided on the side edges of both sides of the support rod (16); and the opening (11) is arranged in a square shape as a whole.

5. A corn planting machine capable of controlling planting spacing as claimed in claim 1, characterized in that: The seed discharging mechanism (21) comprises a discharging nozzle (215), an outer cover (213) is provided on the discharging nozzle (215), a linkage rod (214) is provided inside the outer cover (213), a first spring (217) is sleeved on the linkage rod (214), a strap (216) is provided on one end of the linkage rod (214), a connecting seat (212) is provided on the linkage rod (214) inside the discharging nozzle (215), a conical cylinder (211) is provided on the connecting seat (212), a placement groove (218) is provided inside the connecting seat (212), a vertical opening (210) is provided on the side edge of the placement groove (218), an inclined groove (219) is provided on the side edge of the discharging nozzle (215), and the inclined groove (219) is communicated with the placement groove (218).

6. A corn planting machine capable of controlling planting spacing as claimed in claim 5, characterized in that: The connecting seat (212) is connected to a side cover (23), the side covers (23) are respectively located on both sides of the vertical opening (210) of the connecting seat (212), the side covers (23) are slidably connected to both sides of the inclined groove (219) of the outlet (215), and the vertical opening (210) is communicated with the inclined groove (219).

7. A corn planting machine capable of controlling planting spacing as claimed in claim 5, characterized in that: The conical cylinder (211) is located inside the guide opening (15), the diameter of the large end of the conical cylinder (211) is the same as the inner diameter of the guide opening (15), and the large end of the conical cylinder (211) faces the inner space of the seed groove (7).

8. A corn planting machine capable of controlling planting spacing as claimed in claim 5, characterized in that: The small port of the conical cylinder (211) and the placement groove (218) of the connecting seat (212) are interconnected. The placement groove (218) of the connecting seat (212) is arranged in an arc shape as a whole, and the bottom side port of the placement groove (218) faces the vertical opening (210).

9. A corn planting machine capable of controlling planting spacing as claimed in claim 5, characterized in that: The outer cover (213) is arranged on the outside of the outlet nozzle (215); the outlet nozzle (215) is arranged in a cone shape as a whole; the outlet nozzle (215) and the guide port (15) are interconnected; and the linkage rod (214) inside the outlet nozzle (215) is arranged in a T shape as a whole.

10. A corn planting machine capable of controlling planting spacing as claimed in claim 5, characterized in that: The diameter of the lower end of the linkage rod (214) is the same as the inner diameter of the outer cover (213); the first spring (217) is located on the linkage rod (214) inside the outer cover (213); and the bridge plate (216) connected to the linkage rod (214) is arranged in a circular plate shape as a whole.

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