Piston type paddy field film mulching hill planter

Abstract

The invention relates to the technical field of agricultural mechanical equipment, and particularly discloses a piston type paddy field film mulching hill-drop planter which comprises a rack, a field preparation and film mulching mechanism is arranged at the lower end of the rack, and a film rolling and punching mechanism and a piston type hill-drop mechanism are arranged on the left side and the right side of the upper end of the rack respectively; the film rolling and punching mechanism comprises a hollow rotating cylinder, a plurality of sets of beveled film rolling parts are arranged on the outer circular surface of the hollow rotating cylinder, the piston type hole sowing mechanism comprises a plurality of seed boxes arranged side by side, a support is connected to the lower ends of the seed boxes, a base plate is connected to the lower end of the support, and a plate inserting groove penetrating left and right is formed in the base plate; a seeding hole communicated with the insertion plate groove is formed in the base plate, a piston insertion plate is arranged in the insertion plate groove and is provided with an elastic piece for realizing moving and resetting, and the left end of the piston insertion plate is connected with a lever pressing part; according to the piston type paddy field film mulching hill planter, full-automatic planting of paddy field rice seeds is achieved, and a series of problems existing in an existing agricultural machine are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery and equipment, and specifically discloses a piston-type paddy field film mulching and hill-drop planter. Background Art

[0002] Rice film mulching and hill-drop planting is a modern agricultural technology that combines film covering and precise seeding, and is applicable to paddy fields or dry lands. Among them, for dry-land rice film mulching and hill-drop planting, due to the high hardness of the ground soil and the absence of sticky mud, a duckbill hill-drop seeder can be used for film-breaking and hill-drop seeding. However, for paddy-field rice film mulching and hill-drop planting, limited by the field environment, when using a traditional duckbill hill-drop seeder, a large amount of soil will stick to the duckbills on the hill-drop seeder, resulting in the obstruction of the discharge of rice seeds at the duckbills and the inability to achieve precise hill-drop seeding.

[0003] The utility model patent with the application number 202220441237.3 discloses a paddy-upland dual-purpose rice film mulching and direct seeding machine, which includes a driving rotating shaft. A plurality of roller seeders are connected to the driving rotating shaft. Both the left and right ends of the driving rotating shaft are rotatably connected with vertical connecting rods. The free ends of the two vertical connecting rods are rotatably connected with a transmission rotating shaft. The inner side of each vertical connecting rod is rotatably connected with a vertical rotating shaft. The upper and lower ends of each vertical rotating shaft are respectively rotatably connected with the transmission rotating shaft and the driving rotating shaft through bevel gears; A connecting cross bar is connected between the two connecting rods. The connecting cross bar is rotatably connected with a plurality of mud-removing shafts. Each mud-removing shaft is rotatably connected with the transmission rotating shaft through a bevel gear. A brush is arranged at the lower end of each mud-removing shaft; Each vertical connecting rod is provided with a connecting frame forward. A film installation groove with an open upper end is arranged between the two connecting frames. A film pressing wheel is rotatably connected behind the film installation groove. The paddy-upland dual-purpose rice film mulching and direct seeding machine disclosed in this patent uses a duckbill hill-drop seeder to achieve film-breaking and hill-drop seeding, and a brush is arranged to clean the duckbills on the hill-drop seeder. However, the brush cannot effectively clean the soil entrained inside the duckbills, and there is still a problem that the discharge of rice seeds is blocked and precise hill-drop seeding cannot be achieved. Therefore, in view of the deficiencies of the traditional equipment for paddy-field rice film mulching and hill-drop planting, the present application proposes a piston-type paddy field film mulching and hill-drop planter with a new design. Summary of the Invention

[0004] The purpose of the present invention is to provide a piston-type paddy field film mulching and hill-drop planter to solve the technical problems and deficiencies existing in the precise hill-drop seeding of paddy-field rice seeds with traditional duckbill hill-drop seeders.

[0005] The present invention is realized through the following technical solutions: A piston-type paddy field film mulching and hill-drop planter includes a frame connected to a tractor. A field preparation and film mulching mechanism is arranged at the lower end of the frame. A film rolling and punching mechanism and a piston-type hill-drop seeding mechanism are respectively arranged on the left and right sides at the upper end of the frame; The film rolling and punching mechanism includes a hollow rotating cylinder rotatably arranged in the frame. A plurality of groups of inclined film rolling parts arranged in an annular array are provided on the outer circumferential surface of the hollow rotating cylinder, and the plurality of groups of inclined film rolling parts are arranged at intervals along the axis of the hollow rotating cylinder; The piston-type hill-drop seeding mechanism includes a plurality of seed boxes arranged side by side. A bracket is connected to the lower end of the seed box, a base plate is connected to the lower end of the bracket. A plug slot penetrating left and right is formed in the base plate, and a seeding hole communicating with the plug slot is formed in the base plate. The upper end of the seeding hole is connected to the seed box through a seed guiding pipe. A through hole penetrating the plug slot is formed in the base plate on the left side of the seeding hole. A seed discharging pipe is connected to the lower end of the through hole. A piston plug is arranged in the plug slot, and an elastic member for realizing movement and reset is arranged on the piston plug. The left end of the piston plug is connected with a lever pressing part. The lever pressing part is rotatably connected with the bracket, and a pressing roller acting on a corresponding group of inclined film rolling parts is arranged at the end of the lever pressing part. A seed containing hole for moving back and forth between the through hole and the seeding hole is formed in the piston plug, and the seed containing hole is linearly aligned with a corresponding group of inclined film rolling parts in the moving direction.

[0006] As a further setting of the above solution, the piston-type hill-drop seeding mechanism further includes an air duct strip box with its front and rear ends hermetically and fixedly connected to the frame. A blower is connected to the air duct strip box. An air outlet hole is formed on the lower surface of the air duct strip box, and each air outlet hole is connected to the upper end of the corresponding through hole. Air holes are formed in the piston plug around the seed containing hole.

[0007] As a further setting of the above solution, the elastic member includes a tension spring connected to the right end of the piston plug, and the end of the tension spring is connected to the bracket.

[0008] As a further setting of the above solution, the field tilling and film covering mechanism includes a grass cutting disc, a furrow opening and ridging device, a flat floor assembly, a ridge side film covering wheel and a film rolling wheel connected in the frame in sequence from left to right. A film unloading roller is arranged in the frame above the flat floor assembly, and a film pressing roller is arranged in the frame between the film unloading roller and the ridge side film covering wheel.

[0009] As a further setting of the above solution, the flat floor assembly includes a flat floor rotatably connected to the upper end of the frame. A convex plate is arranged on the flat floor, and an arc-shaped opening centered on the rotation connection between the flat floor and the frame is formed on the convex plate. A positioning rod penetrating the arc-shaped opening is fixed in the frame.

[0010] As a further setting of the above solution, a fertilizing mechanism is further included. The fertilizing mechanism includes a cross frame connected to the left end of the frame. A row of mud breaking devices are fixedly installed on the cross frame. A fertilizer discharging pipe protruding upward is fixedly arranged in the mud breaking device. The top end of the fertilizer discharging pipe is connected to a fertilizer distributor through a fertilizer guiding pipe.

[0011] As a further setting of the above solution, the fertilizing mechanism further includes a fertilizer tank fixed on the tractor. A plurality of the fertilizer distributors are connected side by side at the lower end of the fertilizer tank. The common fertilizer distribution shaft of all the fertilizer distributors is connected to the output shaft of the tractor through a transmission member.

[0012] As a further setting of the above solution, it further includes a film-breaking mechanism. The film-breaking mechanism includes an L-shaped rotating rod rotatably connected to the front and rear outer sides of the frame. A driving cylinder is connected to the left end of the L-shaped rotating rod. The other ends of the two L-shaped rotating rods both extend out of the right end of the frame and are commonly connected to a film-breaking assembly.

[0013] When the piston-type paddy field film mulching and hill-drop seeding machine disclosed in the present invention is used for film mulching and planting of paddy seeds in paddy fields, it is integrally towed and moved by a tractor. During the forward movement of the machine, first, the field tilling and film mulching mechanism opens ditches and ridges in the paddy field, then levels the ridge surface. After leveling, the film is covered on the ridge surface, and the film is pressed against the ridge surface by a film pressing roller. Subsequently, the film on both sides is pressed against the inclined side surfaces at both ends of the ridge by the ridge-side film mulching wheels. Then, holes are punched in the upper layer of the film through a film rolling and hole punching mechanism. Finally, the two ends of the film are rolled into the bottom of the ridge ditch by a film rolling wheel, realizing the effective fixation of the film.

[0014] Meanwhile, during the forward movement of the machine, the film rolling and hole punching mechanism rotates synchronously. After the inclined film rolling part on the hollow rotating cylinder punches the film, it rotates upward. During its upward rotation, it acts on the pressing roller on the piston-type hill-drop seeding mechanism, so that the piston-type hill-drop seeding mechanism performs intermittent seeding operations.

[0015] When the inclined film rolling part acts on the pressing roller, it will cause the lever pressing part to rotate around its connection with the bracket. Under the action of the lever pressing part, the piston plug is pulled to the left. At this time, the seed-containing hole on the piston plug moves from the seed dropping hole to the through hole, and then the seed-containing hole carries the paddy seeds and moves to align with the through hole. After alignment, the paddy seeds fall from the lower end of the through hole into the seed discharging pipe, and then the seed discharging pipe accurately puts them into the holes of the film. At the same time, the air outlet holes at the lower end of the air duct strip box are also exactly opposite to the seed-containing hole and the air hole, so that the high-pressure air flow inside the air duct strip box is blown into the seed discharging pipe, thereby accelerating the falling of the paddy seeds and avoiding the situation that the paddy seeds discharged from the seed discharging pipe cannot accurately fall into the holes of the film when the machine travels too fast or the falling speed of the paddy seeds is too slow.

[0016] In addition, before the piston-type paddy field film mulching and hill-drop seeding machine tills the field and mulches the film, it can also fertilize the paddy field through the fertilizing mechanism. During the specific fertilization process, the fertilizer distributor discharges granular fertilizer into the fertilizer dropping pipe, and the mud-breaking device outside the fertilizer dropping pipe can extend into the paddy field soil to a certain depth, so that the granular fertilizer discharged from the fertilizer dropping pipe is located in the soil, and then is buried at a certain depth on the ridge surface during the field tilling process, which can provide sufficient nutrients for the growth and germination of the paddy seeds.

[0017] Finally, when the machine reaches the end of the field and needs to turn around, the film cutting mechanism is started, and the film cutting component is driven by the cylinder to rotate and swing downward, and the film is cut by the film cutting component. After cutting, the machine is turned around again. There is no need for manual assistance in film cutting, and the whole process is automated.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The piston-type paddy field film covering hole seeder disclosed in the present invention uses a specially designed film rolling and punching mechanism and a piston-type hole seeder mechanism. During the forward movement of the machine, the film rolling and punching mechanism first punches holes in the laid film, and then the piston-type hole seeder mechanism can be triggered to operate after the punching is completed. The piston plug plate in the piston-type hole seeder mechanism reciprocates under the action of the lever pressing part and the elastic member, so that a certain amount of rice seeds are carried through the seed receiving hole to move back and forth between the seed placement hole and the through hole, and the rice seeds discharged from the through hole are accurately put into the holes of the film by the seed discharge pipe to complete the sowing. Compared with the existing duckbill hole seeder, it can avoid the duckbill from being stuck with mud during the film breaking process, resulting in obstruction of the duckbill seed discharge, and the problem of increased rotational running resistance of the hole seeder after being stuck with mud.

[0019] The present invention further arranges an air duct box on the piston-type hole-seeding mechanism, uses a fan to blow air into the air duct box to form high-pressure gas inside, and opens or closes the air outlet holes on the lower surface of the air duct box through the piston plug plate. After the air outlet holes are opened, the high-speed airflow can be used to quickly blow the rice seeds down, ensuring that the rice seeds can accurately fall into the holes in the film, thereby improving the accuracy of hole-seeking.

[0020] The field preparation and film covering mechanism of the present invention can successively dig furrows and ridges for the paddy field, level the ridge surface, and then cover and press the film, and after punching holes in the film, the two ends of the film are tied into the furrows to ensure the stability of the film covering the ridges, and the film cutting mechanism can automatically cut the film when the machine turns around, thereby realizing fully automated planting.

[0021] The present invention further provides a fertilizing mechanism. Before the field preparation and film covering mechanism prepares the paddy field, the mud breaker and the fertilizer pipe can be designed to accurately put the granular fertilizer into the field ridge soil to a certain depth. In conjunction with the subsequent field preparation and film covering, fertilizer loss can be avoided, and sufficient nutrients are provided for the germination and growth of rice, so that the rice can grow rapidly and in high yields. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 Schematic diagram of the front view plane structure of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the first angle of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the second angle of the present invention; Figure 4 Schematic diagram of the first angle structure of the film rolling and punching mechanism and the piston type hill-drop seeding mechanism in the present invention; Figure 5 Schematic diagram of the second angle structure of the film rolling and punching mechanism and the piston type hill-drop seeding mechanism in the present invention; Figure 6 Schematic diagram of the three-dimensional structure of the first angle of the piston type hill-drop seeding mechanism in the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the second angle of the piston type hill-drop seeding mechanism in the present invention; Figure 8 Schematic diagram of the partial three-dimensional structure of the piston type hill-drop seeding mechanism in the present invention; Figure 9 Schematic diagram of the three-dimensional structure of the seed box, bracket, base plate, etc. in the present invention; Figure 10 Schematic diagram of the internal plane structure of the seed box, bracket, base plate, etc. in the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the base plate in the present invention; Figure 12 Schematic diagram of the three-dimensional structure of the piston plug, lever pressing part, pressing roller in the present invention; Figure 13 Schematic diagram of the partial plane structure of the fertilizing mechanism and the flat floor assembly in the present invention; Figure 14 Schematic diagram of the three-dimensional structure of the fertilizing mechanism and the flat floor assembly in the present invention. Detailed implementation manners

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0025] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The following will refer to the attached Figures 1-14 drawings and describe the present application in detail in conjunction with the embodiments. Example 1

[0026] Example 1 discloses a piston-type paddy field film mulching and hill-drop planter. Refer to the attached Figures 1~3 , which includes a frame 1 and a piston-type hill-drop mechanism 6. A connecting frame 3 is arranged at the upper left end of the frame 1, through which the whole machine can be connected to a tractor.

[0027] A field preparation and film mulching mechanism 4 is arranged at the lower end of the frame 1. Specifically, the field preparation and film mulching mechanism 4 includes a grass cutting disc 401, a ditch digging and ridging device 402, a flat floor component 403, a ridge-side film covering wheel 404, and a film rolling wheel 405 arranged in sequence from left to right. A film unloading roller 406 is arranged in the frame 1 above the flat floor component 403, and a film pressing roller 407 is arranged between the film unloading roller 406 and the ridge-side film covering wheel 404. Among them, the grass cutting disc 402 can cut the rice stubble neatly and cut the side end of the film when the width of the paddy field side end is less than one trip; the ditch digging and ridging device 402 digs a ditch on the one hand and piles the soil towards the middle to form a ridge surface on the other hand during the forward movement of the frame 1; the flat floor component 403 levels the upper layer of the formed ridge surface. Then, the film unloading roller 406 unloads the film and covers it on the leveled ridge surface, and the film pressing roller 407 presses it neatly on the ridge surface. Then, the ridge-side film covering wheel 404 presses the two sides of the film on the inclined side surfaces at both ends of the ridge. Finally, the film rolling wheel 405 rolls the two ends of the film into the bottom of the ridge groove to realize the effective fixation of the film and prevent it from being blown up by strong winds.

[0028] The flat floor component 403 in this Example 1 adopts a floating flattening structure design. Refer to the attached Figure 13 and the attached Figure 14 , which includes a shaft rod 4031 arranged in the frame 1, and a downwardly arranged flat floor 4032 is rotatably connected to the shaft rod 4031. An upward convex plate 4033 is arranged on the flat floor 4032, and an arc-shaped opening centered on the shaft rod 4031 is opened on the convex plate 4033. Then, a positioning rod 4034 passing through the arc-shaped opening and parallel to the shaft rod 4031 is fixed in the frame 1. The above design of the flat floor component 403 can rely on its own gravity to press on the ridge surface to achieve leveling, and when encountering some hard object protrusions during the movement, the flat floor 4032 can rotate upward around the shaft rod 4031 and be lifted up to ensure that the whole flat floor component 403 can smoothly pass through the ridge surface in special cases.

[0029] Refer to the attached Figure 4 and the attached Figure 5, a film rolling and punching mechanism 5 is provided in the frame 1 above the ridge-side film covering wheel 404 and the film rolling wheel 405. The film rolling and punching mechanism 5 includes a thin-walled hollow rotating cylinder 501. The cylinder shafts at the front and rear ends of the hollow rotating cylinder 501 are rotatably connected to the bearings on the frame 1. Then, a plurality of groups of inclined film rolling parts 502 arranged in an annular array are welded on the outer cylindrical surface of the hollow rotating cylinder 501, and the plurality of groups of inclined film rolling parts 502 are arranged at equal intervals along the axial direction of the hollow rotating cylinder 501. During the forward movement of the film rolling and punching mechanism 5 along with the frame 1, the inclined film rolling parts 502 can not only puncture and punch the film pressed on the ridge surface, but also, due to the light weight of the hollow rotating cylinder 501, enable itself to rotate around the central axis direction during the interaction with the ridge surface, realizing the automatic rotation of the film rolling and punching mechanism 5. Not only does it not require an external power source, but also it can punch holes at equal intervals as the machine moves.

[0030] Reference appendix Figures 4~12 , the piston-type hill-drop seeding mechanism 6 is installed at the right end of the frame 1. It includes an air duct strip box 601 fixedly and hermetically connected to the frame 1 at the front and rear ends. A row of air outlet holes 6011 are evenly opened on the lower surface of the air duct strip box 601, and each air outlet hole 6011 is arranged in alignment one by one with the plurality of groups of inclined film rolling parts 502 on the hollow rotating cylinder 501 in the linear movement direction. Both ends of the air duct strip box 601 are connected with fans 602. Through the two fans 602, air can be continuously blown into the interior of the air duct strip box 601, increasing the air pressure inside the air duct strip box 601.

[0031] A row of seed boxes 603 is arranged above the air duct strip box 601, and each seed box 603 is also arranged in alignment one by one with the air outlet holes 6011. The lower end of the seed box 603 is connected with a support 604. The lower end of the support 604 is detachably connected with a base plate 605 through screws or the like. An insertion slot 6051 that is aligned with each seed box 603 and runs through from left to right is opened on the upper surface of the base plate 605. A seed discharging hole 6052 that is connected to the insertion slot 6051 is opened at the right end of the upper surface of the base plate 605. The upper end of the seed discharging hole 6052 is connected to the corresponding seed box 603 through a seed guiding pipe 606. A through hole 6053 that runs through the insertion slot 6051 is opened on the base plate 605 directly to the left of the seed discharging hole 6052, and the upper end of the through hole 6053 is connected to the corresponding air outlet hole 6011 on the air duct strip box 601. Finally, a seed discharging pipe 607 that extends downward is connected to the lower end of the through hole 6053.

[0032] A piston plug plate 608 that matches it is inserted into the plug plate slot 6051. The left end of the piston plug plate 608 is movably connected to a lever pressing part 609 through a pin shaft. The middle position of the lever pressing part 609 is rotatably connected to a bracket 604. A pressing roller 610 that acts on a corresponding group of beveled film rolling parts 502 is arranged at the upper end of the lever pressing part 609. The right end of the piston plug plate 608 extending out of the plug plate slot 6051 is connected to a tension spring (not shown in the figure), and the end of the tension spring is connected to the bracket 604. The tension spring can provide the power for the piston plug plate 608 to return to its original position. Alternatively, a torsion spring (not shown in the figure) can also be directly arranged at the rotational connection between the lever pressing part 609 and the bracket 604, and the torsion spring provides the power for the piston plug plate 608 to return to its original position.

[0033] A seed containing hole 6081 is formed in the piston plug plate 608 inside the plug plate slot 6051. The depth of the seed containing hole 6081 is determined by the thickness of the piston plug plate 608 and is set within the range equal to the width of the rice seeds. When the piston plug plate 608 reciprocates under the action of the lever pressing part 609, it can continuously switch between the seed dropping hole 6052 and the through hole 6053. In addition, some air holes 6082 are formed in the piston plug plate 608 around the seed containing hole 6081. When the seed containing hole 6081 moves to align with the through hole 6053, the seeds will directly drop into the seed discharging pipe 607, and at the same time, the high-pressure gas inside the air duct strip box 601 can enter the seed discharging pipe 607 through the air holes 6082, thereby accelerating the dropping of the rice seeds and avoiding the situation that the rice seeds discharged from the seed discharging pipe 607 cannot accurately fall into the holes on the film due to the too fast traveling speed of the machine or the too slow dropping speed of the rice seeds.

[0034] During the operation of the piston type paddy field film mulching and hill dropping machine disclosed in Embodiment 1, it is towed by a tractor and moves forward along the paddy field. During its forward movement, first, the rice stubble is cut neatly by the grass cutting disc 401, and the ditch opening and ridging device 402 opens ditches and ridges the paddy field. After ridging, the flat floor assembly 403 levels the ridge surface. After leveling, the film on the film unloading roller 406 is unloaded, and the film is neatly pressed and pasted on the ridge surface by the film pressing roller 407. Then, the two sides of the film are pressed and pasted on the inclined sides at both ends of the ridge by the ridge side film mulching wheels 404. Finally, the two ends of the film are rolled into the bottom of the ridge ditch by the film rolling wheel 405 to realize the effective fixation of the film.

[0035] During the forward movement of the machine, the film rolling and punching mechanism 5 can convert the linear movement of the machine into a rotational movement that drives its own rotation. During the rotation of the hollow rotating cylinder 501, the beveled film rolling part 502 on its outer cylindrical surface can punch holes in the film pressed on the ridge surface, so that a row of equally spaced holes appear on the film. At the same time, during the rotation of the hollow rotating cylinder 501, when the beveled film rolling part 502 that has punched holes rotates upward, it acts on the pressing roller 610 on the piston type hill dropping mechanism 6, so that the piston type hill dropping mechanism 6 performs intermittent seed discharging operations.

[0036] When the piston-type hole-seeking mechanism 6 is in operation, the pressing roller 610 at the upper end of the lever pressing part 609 is subjected to the upward squeezing force of the oblique film rolling part 502, so that the lever pressing part 609 rotates around the rotation point with the bracket 604, thereby pulling the piston insert plate 608 to the left along the insert plate groove 6051. At this time, the seed receiving hole 6081 on the plug plate slot 6051 carries the rice seeds and moves from the seed placement hole 6052 to the through hole 6053 until the seed receiving hole 6081 is aligned with the through hole 6053, and the rice seeds will fall into the seed discharging tube 607 from the lower end of the through hole 6053. At the same time, the air outlet hole 6011 at the lower end of the air duct box 601 is also facing the seed receiving hole 6081 and the air hole 6082. The high-pressure airflow inside the air duct box 601 will be blown into the seed discharging tube 607, thereby accelerating the falling of the rice seeds, so that the seeds fall accurately into the holes on the film.

[0037] When the beveled film rolling part 502 slips off the pressure roller 610, the piston insert plate 608 will quickly move to the right under the action of the tension spring or other elastic parts until it is aligned with the seed hole 6052. At this time, the piston insert plate 608 will seal the upper and lower ends of the through hole 6053, and the rice seeds in the seed box 603 will fall into the seed hole 6081 through the seed guide tube 606, waiting for the next interaction between the beveled film rolling part 502 and the pressure roller 610. The above actions can be repeated to achieve accurate addition of rice seeds into the holes in the film. Example 2

[0038] Example 2 discloses a piston-type paddy field film covering hole seeder that is further optimized based on the technical solution in Example 1, and the similarities between it and Example 1 are not described again.

[0039] The difference of this embodiment 2 is that a fertilizer application mechanism 2 and a film cutting mechanism 7 are respectively provided at the left and right ends of the frame 1. Figures 1~3 And attached Figure 13 , Attachment Figure 14 The fertilization mechanism 2 includes a fertilizer box 201, which is directly mounted on the tractor, thereby reducing the load of the entire mulching hole seeder and preventing the machine from sinking seriously in the paddy field. A plurality of fertilizer spreaders (not shown) arranged side by side are arranged at the lower end of the fertilizer box 201, and the fertilizer shaft common to all fertilizer spreaders is connected to the output shaft of the tractor through a chain or belt transmission member 202, thereby converting the power of the tractor into the operating power of the fertilizer spreader.

[0040] A cross frame 203 is provided in the frame 1 between the grass cutting disc 401 and the ridging opener 402. A row of soil breaking devices 204 are fixedly installed on the cross frame 203. Then, downward fertilizer pipes 205 extending upward are fixedly arranged in the soil breaking devices 204. The top end of each downward fertilizer pipe 205 is connected to the corresponding fertilizer distributor through a fertilizer guiding pipe (not shown in the figure), so as to realize the precise fertilization operation before rice film mulching and hill seeding.

[0041] The film breaking mechanism 7 includes L-shaped rotating rods 701 rotatably connected to the front and rear outer sides of the frame 1. A driving cylinder 702 movably connected to the frame 1 is connected to the left end of each L-shaped rotating rod 701. By controlling the extension or shortening of the driving cylinder 702, the rotation and lifting of the other end of the L-shaped rotating rod 701 are realized. Finally, the other ends of the two L-shaped rotating rods 701 extend out of the right end of the frame 1 and are commonly connected with a film breaking assembly 703. Specifically, the film breaking assembly 703 can adopt a sawtooth film breaking knife or an electric heating wire fusing film breaking method, so that it can automatically complete the cutting of the film before the machine turns around, without manual assistance for film breaking, and realize the whole process of automatic mechanical operation.

[0042] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A piston-type paddy field mulching seed drill, comprising a frame connected to a tractor, characterized in that: The lower end of the frame is provided with a field-leveling and film-covering mechanism, and the left and right sides of the upper end of the frame are respectively provided with a film-rolling and perforating mechanism and a piston-type hole-seeding mechanism; The film rolling and punching mechanism comprises a hollow rotating drum rotatably arranged in a frame, and a plurality of groups of oblique film rolling parts arranged in a circular array are arranged on the outer circumferential surface of the hollow rotating drum, and the plurality of groups of oblique film rolling parts are arranged at intervals along the axis of the hollow rotating drum; The piston-type hole sowing mechanism comprises a plurality of seed boxes arranged side by side, the lower end of the seed box is connected to a bracket, the lower end of the bracket is connected to a base plate, the base plate is provided with a plug plate groove penetrating left and right, the base plate is provided with a lower seed hole connected to the plug plate groove, the upper end of the lower seed hole is connected to the seed box through a seed guide tube, the base plate located on the left side of the lower seed hole is provided with a through hole penetrating the plug plate groove, the lower end of the through hole is connected to a seed discharge tube, a piston plug plate is provided in the plug plate groove, and an elastic member for realizing movement and resetting is provided on the piston plug plate, the left end of the piston plug plate is connected to a lever pressing part, the lever pressing part is rotatably connected to the bracket, and the end of the lever pressing part is provided with a pressing roller acting on a corresponding group of oblique film rolling parts, the piston plug plate is provided with a seed receiving hole that moves back and forth between the through hole and the lower seed hole, and the seed receiving hole is linearly aligned with a corresponding group of oblique film rolling parts in the moving direction.

2. The piston-type paddy field film covering hole seeder according to claim 1, characterized in that: The piston-type seeding mechanism also includes an air duct box whose front and rear ends are sealed and fixedly connected to the frame, and a fan is connected to the air duct box. An air outlet hole is arranged on the lower surface of the air duct box, and each air outlet hole is connected to the upper end of the corresponding through hole. An air hole is opened on the piston plug plate located outside the seeding hole.

3. The piston-type paddy field film covering hole seeder according to claim 1, characterized in that: The elastic member comprises a tension spring connected to the right end of the piston insert plate, and the end of the tension spring is connected to the bracket.

4. The piston-type paddy field film covering hole seeder according to claim 1, characterized in that: The field preparation and film covering mechanism includes a grass cutting disc, a furrow opener and ridger, a flat floor assembly, a ridge edge film covering wheel and a film rolling wheel which are sequentially connected in the frame from left to right; a film unloading roller is arranged in the frame above the flat floor assembly, and a film pressing roller is arranged in the frame between the film unloading roller and the ridge edge film covering wheel.

5. The piston-type paddy field film covering hole seeder according to claim 4, characterized in that: The flat floor assembly comprises a flat floor whose upper end is rotatably connected to the frame, a convex plate is arranged on the flat floor, and an arc opening with the rotation connection between the flat floor and the frame as the center is opened on the convex plate, and a positioning rod passing through the arc opening is fixed in the frame.

6. The piston-type paddy field film covering hole seeder according to claim 1, characterized in that: It also includes a fertilizing mechanism, which includes a cross frame connected to the left end of the frame, a row of mud breakers are fixedly installed on the cross frame, and a fertilizer discharge pipe extending upward is fixedly arranged in the mud breakers, and the top end of the fertilizer discharge pipe is connected to the fertilizer discharger through a fertilizer guide pipe.

7. The piston-type paddy field film-covering hole seeder according to claim 6, characterized in that: The fertilizing mechanism also includes a fertilizer box fixed on the tractor, a plurality of fertilizer dispensers are connected in parallel at the lower end of the fertilizer box, and a fertilizer discharge shaft common to all fertilizer dispensers is connected to an output shaft of the tractor through a transmission member.

8. The piston-type paddy field film covering hole seeder according to claim 1, characterized in that: It also includes a film cutting mechanism, which includes an L-shaped rotating rod rotatably connected to the front and rear outer sides of the frame, the left end of the L-shaped rotating rod is connected to a driving cylinder, and the other ends of the two L-shaped rotating rods extend out of the right end of the frame and are commonly connected to a film cutting assembly.

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