CN216058217U

CN216058217U - Self-propelled air suction precision water film hill-drop sand covering machine

Info

Publication number: CN216058217U
Application number: CN202122591257.7U
Authority: CN
Inventors: 路大波; 路大涛; 张永勇; 吴伟; 姚志强; 王馨; 贾玉斌; 翟军伟; 杨大明
Original assignee: Inner Mongolia Dabo Jintian Machinery Co ltd
Current assignee: Inner Mongolia Dabo Jintian Machinery Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-03-18
Anticipated expiration: 2031-10-26

Abstract

The utility model relates to the technical field of agricultural machinery, and provides a self-propelled air-suction precision water film ground hole sowing sand covering machine which comprises a sowing roller assembly arranged on a rack, wherein the sowing roller assembly comprises a roller erected on a roller frame, a group of hole digging shovels arranged on the outer circumferential surface of the roller along the circumferential direction, a seed sowing device arranged on the roller frame and positioned behind the roller, the sowing roller assembly further comprises a ground grabbing wheel coaxially arranged with the roller and positioned on the outer side of the roller, the lowest part of the outer wall of the ground grabbing wheel is positioned below the lowest part of the outer wall of the roller and above the lowest part of the hole digging shovels, and the ground grabbing wheel is connected with a discharging shaft of the seed sowing device by virtue of a first transmission mechanism to form transmission fit. The problem of among the correlation technique cylinder roll on the plastic film, roll the earth under the plastic film and make it harden, harden into the piece, under the effect of tension when the shovel of digging a hole is opened the earth of piecemeal can cover the seed top and seriously influence the rate of emergence, need be equipped with solitary power unit for the seed metering ware moreover, the cost is higher is solved.

Description

Self-propelled air suction precision water film hill-drop sand covering machine

Technical Field

The utility model relates to the technical field of agricultural machinery, in particular to a self-propelled air suction precision water film hole sowing sand covering machine.

Background

In the last ten years, the salinization of the land is serious, so that the emergence rate and the growth of crops are influenced. Therefore, growers are forced to adopt a method of firstly spreading the film, watering and then planting, and the land is called a water film land. Because soil can not be taken out and covered between ridges after water film sowing, sandy soil which is pulled to the field head can be covered above the hole holes one by one only after manual sowing, thereby greatly increasing the sowing cost and improving the labor intensity.

The sowing and sand covering equipment in the domestic market at present has the following three disadvantages:

firstly, a roller rolls on a mulching film in the seeding process, soil under the mulching film is rolled to be hardened and hardened into blocks, the blocked soil can cover the seeds under the action of tension when a hole opening shovel is opened, the emergence rate is seriously influenced, and an independent power mechanism needs to be arranged for a seed sowing device, so that the cost is high;

secondly, the sowing duck bill with a conventional structure is used, and due to the fact that soil below a mulching film of a water film field is high in viscosity, the phenomenon that soil is adhered to the inner wall of the duck bill occurs, seeds cannot be accurately sown in the holes, and the emergence rate is seriously affected;

and thirdly, dragging operation of a matched tractor leads to transition rolling of cultivated land and destruction of mulching films paved on the cultivated land head.

SUMMERY OF THE UTILITY MODEL

The utility model provides a self-propelled air suction precision water film hole sowing sand covering machine, which solves the problems that in the related technology, a roller rolls on a mulching film, soil under the mulching film is rolled to be hardened and hardened into blocks, the blocked soil can cover the upper part of seeds under the action of tension when a hole opening shovel is opened, the emergence rate is seriously influenced, and a seed sowing device needs to be provided with a separate power mechanism, so that the cost is high.

The technical scheme of the utility model is as follows: self-propelled air suction precision water film hill-drop sand covering machine, including setting up the seeding cylinder assembly in the frame, the seeding cylinder assembly is including setting up on the roller frame and forming normal running fit's cylinder with frame and roller frame, along a set of dibble shovel that the circumferencial direction set up on the outer periphery of cylinder and set up on the roller frame and be located the seed metering ware at cylinder rear, and the key lies in: the seeding roller assembly further comprises a ground grabbing wheel which is coaxially arranged with the roller and is positioned on the outer side of the seeding roller assembly, the lowest position of the outer wall of the ground grabbing wheel is positioned below the lowest position of the outer wall of the roller and above the lowest position of the hole digging shovel, and the ground grabbing wheel is connected with a discharge shaft of the seed sowing device by means of a first transmission mechanism to form transmission fit.

The seeding roller assembly further comprises a seed inoculation box arranged on the rack and located below the seed metering device and a fan connected with the inside of the seed inoculation box, and a seed dropping opening is formed in the bottom of the seed inoculation box.

The seeding roller assembly also comprises a seed box sealing cover arranged below a seed dropping port of the seed box, a lower sand box positioned at the rear part of the seed box, and a sand box sealing cover arranged below the sand dropping port of the lower sand box, wherein the front end of the seed box sealing cover is hinged with the seed box, the rear end of the seed box sealing cover is a free end, the front end of the sand box sealing cover is hinged with the lower sand box, the rear end of the sand box sealing cover is a free end, the seeding roller assembly also comprises a shifting rod mechanism and a group of collision shafts fixed on the outer end surface of the roller, all the collision shafts are uniformly arranged along the circumferential direction of the roller, the middle part of the shifting rod mechanism is hinged with the roller frame by means of a limiting rod, the rear end of the shifting rod mechanism bends downwards and extends and is simultaneously contacted with the lower end surfaces of the seed box sealing cover and the sand box sealing cover, the limiting rod is positioned above the seed box sealing cover and the sand box sealing cover, the front end of the shifting rod mechanism is lapped with the collision shaft positioned at the rear part of the axis of the roller and synchronously rotates upwards to form an opening mechanism of the seed box sealing cover and the sand box sealing cover, the front end of the deflector rod mechanism is separated from the collision shaft to form a closing mechanism of the seed box sealing cover and the sand box sealing cover.

The driving lever mechanism comprises a first driving lever, a second driving lever and a bracket for supporting the seed box sealing cover and the sand box sealing cover simultaneously, the middle part of the first driving lever is hinged with a roller frame positioned outside the first driving lever by virtue of a limiting rod, the front end of the first driving lever is in lap joint or separation with a collision shaft positioned behind the axis of a roller, the rear end of the first driving lever is fixedly connected with the upper end of the second driving lever, and the lower end of the second driving lever is fixedly connected with the front end of the bracket.

The bracket comprises a first supporting shaft and a second supporting shaft, wherein the first supporting shaft is arranged below the sand box sealing cover and used for supporting the sand box sealing cover, the second supporting shaft is arranged below the sand box sealing cover and used for supporting the sand box sealing cover, the axes of the first supporting shaft and the second supporting shaft are arranged along the left-right direction, the bracket also comprises a connecting plate which is fixedly connected with the same end of the first supporting shaft and the second supporting shaft, and the lower end of the second transmission rod is fixedly connected with the connecting plate/the first supporting shaft.

Reset springs are connected between the seed box sealing cover and the inoculation box and between the sand box sealing cover and the lower sand box.

The seeding roller assembly also comprises a seed box arranged on the roller frame, and the outlet of the seed box is connected with the inlet of the seed sowing device.

The sand masking machine further comprises a sand box arranged on the frame and positioned behind the seed sowing device and a rear travelling wheel connected with the frame, a feeding port of the lower sand box is connected with a discharging port of the sand box, and the rear travelling wheel is connected with a sand discharging shaft of the sand box by means of a second transmission mechanism to form transmission fit.

A driving mechanism is fixed on the frame, an output shaft of the driving mechanism is connected with the rear travelling wheel to form transmission fit, an engine, a generator and a storage battery which are sequentially and electrically connected are also fixed on the frame, and the storage battery is connected with the driving mechanism.

Grab the land wheel and include the wheel body and along a set of pterygoid lamina that the circumferencial direction set up on the outer terminal surface of wheel body, the outer end of pterygoid lamina extends to the wheel body outside, and the lower of pterygoid lamina is located the lower of cylinder outer wall and is located the top of the lower of cave-opening shovel.

The working principle and the beneficial effects of the utility model are as follows: set up the land wheel of grabbing rather than coaxial setting in the cylinder outside, the lower below that is located the cylinder outer wall of the lower of grabbing the land wheel outer wall just is located the top of the lower of digging shovel, during the seeding, under the prerequisite of guaranteeing that the digging shovel can satisfy the demand of digging a cave, make and grab the land wheel and grab the ground, and the cylinder does not contact with the plastic film, the cylinder can not roll the earth under the plastic film again, can effectively avoid the earth stiffening under the plastic film, the piece that hardens, the earth that effectively avoids under the effect of tension when digging the shovel is opened the piece covers the seed top, can improve the rate of emergence. And the ground-grasping wheel is utilized to drive the discharge shaft of the seed sowing device to rotate, so that the seed sowing process is completed, and an independent power mechanism is not required to be equipped, so that the cost can be saved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a right side view of the present invention.

Fig. 3 is a left side view of the present invention.

Fig. 4 is a top view of the present invention.

Fig. 5 is a perspective view of a single seed sowing in the present invention.

Fig. 6 is a right side view of a single seed sowing in the present invention.

Fig. 7 is a left side view of a single seed of the present invention.

Fig. 8 is a top view of a single seed of the present invention.

Fig. 9 is a schematic view of the bottom structure of a single seed drill in the present invention.

In the figure: 1. the device comprises a roller frame, 2, rollers, 3, a hole digging shovel, 4, a ground grabbing wheel, 4-1, a wheel body, 4-2, a wing plate, 5, a seed metering device, 6, a seed receiving box, 7, a fan, 8, a seed box sealing cover, 9, a sand box, 10, a sand box sealing cover, 11, a deflector rod mechanism, 11-1, a first transmission rod, 11-2, a second transmission rod, 11-3, a first support shaft, 11-4, a second support shaft, 11-5, a connecting plate, 12, a collision shaft, 13, a limiting rod, 14, a seed box, 15, a sand box, 16, a frame, 17, a rear traveling wheel, 18, an engine, 19, a generator, 20, a storage battery, 21 and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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 be included within the scope of protection of the present invention.

In a specific embodiment, as shown in fig. 1, the self-propelled air suction precision water film ground hill-drop sand-masking machine comprises a seeding roller assembly arranged on a rack 16, wherein the seeding roller assembly comprises a roller 2 erected on a roller frame 1 and rotationally matched with the rack 16 and the roller frame 1, a group of hole-opening shovels 3 arranged on the outer circumferential surface of the roller 2 along the circumferential direction, and a seed-metering device 5 arranged on the roller frame 1 and behind the roller 2, the seeding roller assembly further comprises a ground-grasping wheel 4 coaxially arranged with the roller 2 and located on the outer side of the roller, the lowest part of the outer wall of the ground-grasping wheel 4 is located below the lowest part of the outer wall of the roller 2 and above the lowest part of the hole-opening shovels 3, and the ground-grasping wheel 4 is connected with a discharging shaft of the seed-metering device 5 by means of a first transmission mechanism to form transmission matching.

As shown in figure 1, a frame 16 is provided with two seeding roller assemblies which are symmetrically arranged at the left and the right, the hole digging shovel 3 is a membrane breaking duckbill, and the first transmission mechanism is preferably a chain transmission mechanism. During the seeding, guaranteeing to open cave shovel 3 and can satisfying under the prerequisite of opening the cave demand, make and grab land wheel 4 and grab ground, and cylinder 2 does not contact with the plastic film, and cylinder 2 can not roll the earth under the plastic film again, can effectively avoid the earth stiffening under the plastic film, the one-tenth piece that hardens, effectively avoid under the effect of tension when opening cave shovel 3 the earth that becomes the piece to cover the seed top, can improve the rate of emergence. And the land grasping wheel 4 is utilized to drive the discharge shaft of the seed sowing device 5 to rotate, the seed sowing process is completed, a separate power mechanism is not required to be equipped, and the cost can be saved.

As a further improvement of the utility model, the seeding roller assembly also comprises an inoculation box 6 which is arranged on the frame 16 and is positioned below the seed metering device 5, and a fan 7 which is connected with the inside of the inoculation box 6, and the bottom of the inoculation box 6 is provided with a seed dropping opening. As shown in fig. 1, 2, 3 and 4, the seeding apparatus 5 and the inoculation box 6 can be matched to realize automatic seeding and mechanical operation, and is more time-saving and labor-saving. The negative pressure effect that fan 7 produced for the seed in the seed metering device 5 falls into inoculation box 6 smoothly, avoids blockking up and influences the seeding effect.

As a further improvement of the utility model, the seeding roller assembly also comprises a seed box sealing cover 8 arranged below a seed dropping port of the seed box 6, a lower sand box 9 positioned behind the seed box 6, and a sand box sealing cover 10 arranged below the sand dropping port of the lower sand box 9, the front end of the seed box sealing cover 8 is hinged with the seed box 6, the rear end is a free end, the front end of the sand box sealing cover 10 is hinged with the lower sand box 9, the rear end is a free end, the seeding roller assembly also comprises a deflector rod mechanism 11 and a group of collision shafts 12 fixed on the outer end surface of the roller 2, all the collision shafts 12 are uniformly arranged along the circumferential direction of the roller 2, the middle part of the deflector rod mechanism 11 is hinged with the roller frame 1 by a limiting rod 13, the rear end is bent downwards and extends and is simultaneously contacted with the seed box sealing cover 8 and the lower end surface of the sand box sealing cover 10, the limiting rod 13 is positioned above the seed box sealing cover 8 and the sand box sealing cover 10, the front end of the deflector rod mechanism 11 is overlapped with a striking shaft 12 positioned behind the axis of the roller 2 and synchronously rotates upwards to form an opening mechanism of the seed box sealing cover 8 and the sand box sealing cover 10, and the front end of the deflector rod mechanism 11 is separated from the striking shaft 12 to form a closing mechanism of the seed box sealing cover 8 and the sand box sealing cover 10.

As shown in fig. 5, the middle of the lever mechanism 11 is hinged to the lower sand box 9 through a limiting rod 13, so that the lever mechanism 11 can only rotate forward and backward for setting an angle, and when not in operation, the rear end of the lever mechanism 11 is simultaneously in contact with the lower end faces of the seed box sealing cover 8 and the sand box sealing cover 10, so that the seed box sealing cover 8 below the seed receiving box 6 and the sand box sealing cover 10 below the lower sand box 9 are both in a closed state. When in use, the lowest position of the roller 2 rotates to the rear upper part, the striking shaft 12 on the outer side surface of the roller 2 moves to the rear upper part after passing through the lowest position, after the front end of the deflector rod mechanism 11 is lapped with the striking shaft 12 which is positioned at the rear part of the axis of the roller 2 and moves upwards, the rear end of the deflector rod mechanism 11 rotates downwards along with the synchronous upward movement of the striking shaft 12, the rear ends of the seed box sealing cover 8 and the sand box sealing cover 10 move downwards after losing the supporting function, the seed box sealing cover 8 and the sand box sealing cover 10 are opened, seeds and sand fall into the hole opened by the hole opening shovel 3, the striking shaft 12 is separated from the front end of the deflector rod mechanism 11 along with the continuous rotation of the roller 2, the front end of the deflector rod mechanism 11 rotates downwards at the same angle after losing the supporting function and returns to the initial position, the rear end of the deflector rod mechanism 11 rotates upwards to be contacted with the lower end surfaces of the seed box sealing cover 8 and the sand box sealing cover 10 again, and the seed box sealing cover 8 and the sand box sealing cover 10 are both return to the closed state, the process of intermittent seeding and intermittent sand burying can be completed by repeating the steps. Simple structure, convenient and fast use, time saving and labor saving.

As a further improvement of the utility model, the deflector rod mechanism 11 comprises a first transmission rod 11-1, a second transmission rod 11-2 and a bracket for simultaneously supporting the seed box sealing cover 8 and the sand box sealing cover 10, the middle part of the first transmission rod 11-1 is hinged with the roller frame 1 positioned at the outer side of the first transmission rod by a limiting rod 13, the front end of the first transmission rod 11-1 is overlapped or separated with a collision shaft 12 positioned behind the axis of the roller 2, the rear end of the first transmission rod 11-1 is fixedly connected with the upper end of the second transmission rod 11-2, and the lower end of the second transmission rod 11-2 is fixedly connected with the front end of the bracket.

As shown in fig. 6, 7 and 9, at this time, the seed box sealing cover 8 and the sand box sealing cover 10 are both in a closed state, the front end of the first transmission rod 11-1 overlaps the striking shaft 12, the front end of the first transmission rod 11-1 rotates upward along with the striking shaft 12 as the drum 2 rotates, the rear end of the first transmission rod 11-1 rotates downward, so that the second transmission rod 11-2 and the bracket rotate downward, the seed box sealing cover 8 and the sand box sealing cover 10 are opened, after the first transmission rod 11-1 is separated from the striking shaft 12, the front end of the first transmission rod 11-1 rotates downward by an equal angle and returns to an initial position, the second transmission rod 11-2 and the bracket rotate upward and return to the initial position, and the seed box sealing cover 8 and the sand box sealing cover 10 both return to a closed state, and are simple in structure and convenient to use.

As a further improvement of the utility model, the bracket comprises a first supporting shaft 11-3 which is arranged below the seed box sealing cover 8 and is used for supporting the seed box sealing cover 8, and a second supporting shaft 11-4 which is arranged below the sand box sealing cover 10 and is used for supporting the sand box sealing cover 10, the axes of the first supporting shaft 11-3 and the second supporting shaft 11-4 are arranged along the left-right direction, the bracket also comprises a connecting plate 11-5 which is fixedly connected with the same end of the first supporting shaft 11-3 and the second supporting shaft 11-4, and the lower end of the second transmission rod 11-2 is fixedly connected with the connecting plate 11-5/the first supporting shaft 11-3. As shown in fig. 5, 6, 7 and 9, the first support shaft 11-3 and the second support shaft 11-4 are connected by a connecting plate 11-5, and the weight of the bracket can be reduced as much as possible by ensuring reliable support of the first support shaft 11-3 and the second support shaft 11-4.

As a further improvement of the utility model, return springs are connected between the seed box sealing cover 8 and the inoculation box 6 and between the sand box sealing cover 10 and the lower sand box 9, so that the seed box sealing cover 8 and the sand box sealing cover 10 can automatically return, and the pressure on the bracket can be reduced.

As a further improvement of the utility model, the sowing roller assembly further comprises a seed box 14 arranged on the roller frame 1, and the outlet of the seed box 14 is connected with the inlet of the seed sowing device 5. As shown in fig. 1 to 9, when seeds are stored in the seed box 14 and the seed box 14 is used for replenishing seeds to the seed sowing device 5, the frequency of replenishing seeds to the seed sowing device 5 can be reduced, and the production efficiency can be improved.

As a further improvement of the utility model, the sand masking machine also comprises a sand box 15 which is arranged on the frame 16 and is positioned at the rear of the seed sowing device 5, and a rear travelling wheel 17 which is connected with the frame 16, wherein the feeding port of the lower sand box 9 is connected with the discharging port of the sand box 15, and the rear travelling wheel 17 is connected with the sand discharging shaft of the sand box 15 by a second transmission mechanism to form transmission fit. As shown in fig. 4, the front traveling wheels are located in front of the drum 2, the rear traveling wheels 17 are located behind the sandbox 15, the left lower sandbox 9 and the right lower sandbox 9 are connected with the same sandbox 15, some sand is stored in the sandbox 15, the sand is continuously supplied to the lower sandbox 9, the frequency of supplementing the sand to the lower sandbox 9 can be reduced, the production efficiency is improved, and the second transmission mechanism is preferably a chain transmission mechanism.

As a further improvement of the utility model, a driving mechanism is fixed on a frame 16, an output shaft of the driving mechanism is connected with a rear travelling wheel 17 to form transmission fit, an engine 18, a generator 19 and a storage battery 20 which are sequentially and electrically connected are also fixed on the frame 16, and the storage battery 20 is connected with the driving mechanism. As shown in fig. 1, 2, 3 and 4, the battery 20 supplies electric energy to the driving mechanism, i.e. the motor, so that the driving mechanism drives the rear traveling wheels 17 to rotate, the rear traveling wheels 17 drive the frame 16 to travel, the engine 18 drives the generator 19 to generate electricity to charge the battery 20, and continuous production can be realized.

As a further improvement of the utility model, the ground grabbing wheel 4 comprises a wheel body 4-1 and a group of wing plates 4-2 arranged on the outer end face of the wheel body 4-1 along the circumferential direction, the outer ends of the wing plates 4-2 extend to the outside of the wheel body 4-1, and the lowest part of the wing plates 4-2 is positioned below the lowest part of the outer wall of the roller 2 and above the lowest part of the holing shovel 3. As shown in fig. 5, 6, 8 and 9, a reliable grip effect of the ground gripping wheel 4 is ensured.

A group of through holes 21 are formed in the end face of the ground grabbing wheel 4, and all the through holes 21 are uniformly arranged in the circumferential direction of the ground grabbing wheel 4. As shown in fig. 5, 6 and 9, the ground-grasping wheel 4 can be lightened by forming the through hole 21 on the premise that the ground-grasping wheel 4 can meet the use requirement. The width of the through hole 21 is gradually increased from one end close to the axis of the ground grabbing wheel 4 to the other end, so that the ground grabbing wheel 4 is ensured to have enough aperture ratio.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Self-propelled air suction precision water film hill-drop sand covering machine, including setting up seeding cylinder assembly on frame (16), seeding cylinder assembly forms normal running fit's cylinder (2) including erectting on roller frame (1) and with frame (16) and roller frame (1), along a set of dibble shovel (3) that the circumferencial direction set up on the outer periphery of cylinder (2) and set up seed metering ware (5) that just are located cylinder (2) rear on roller frame (1), its characterized in that: seeding cylinder assembly still includes grabs land wheel (4) with cylinder (2) coaxial setting and be located its outside, grabs the lowest below that the lowest of land wheel (4) outer wall is located cylinder (2) outer wall and is located the top of the lowest of digger (3), grabs land wheel (4) and is connected with the row's material axle of seed metering ware (5) with the help of a drive mechanism and forms the transmission cooperation.

2. The self-propelled air suction precision water film hill-drop sand screen of claim 1, characterized in that: the seeding roller assembly further comprises an inoculation box (6) which is arranged on the rack (16) and is positioned below the seed metering device (5), and a fan (7) which is connected with the inside of the inoculation box (6), and a seed dropping opening is formed in the bottom of the inoculation box (6).

3. The self-propelled air suction precision water film hill-drop sand screen of claim 2, characterized in that: the seeding roller assembly also comprises a seed box sealing cover (8) arranged below a seed dropping port of the seed box (6), a sand box (9) positioned behind the seed box (6), and a sand box sealing cover (10) arranged below the sand dropping port of the sand box (9), wherein the front end of the seed box sealing cover (8) is hinged with the seed box (6), the rear end of the seed box sealing cover is a free end, the front end of the sand box sealing cover (10) is hinged with the sand box (9), the rear end of the sand box sealing cover is a free end, the seeding roller assembly also comprises a shifting lever mechanism (11) and a group of collision shafts (12) fixed on the outer end surface of the roller (2), all the collision shafts (12) are uniformly arranged along the circumferential direction of the roller (2), the middle part of the shifting lever mechanism (11) is hinged with the roller frame (1) by means of a limiting rod (13), the rear end of the shifting lever mechanism is bent downwards and extends and is simultaneously contacted with the seed box sealing cover (8) and the lower end surface of the sand box sealing cover (10), the limiting rod (13) is positioned above the seed box sealing cover (8) and the sand box sealing cover (10), the front end of the deflector rod mechanism (11) is lapped with the striking shaft (12) positioned behind the axis of the roller (2) and synchronously rotates upwards to form an opening mechanism of the seed box sealing cover (8) and the sand box sealing cover (10), and the front end of the deflector rod mechanism (11) is separated from the striking shaft (12) to form a closing mechanism of the seed box sealing cover (8) and the sand box sealing cover (10).

4. The self-propelled air suction precision water film hill-drop sand screen of claim 3, characterized in that: the poking rod mechanism (11) comprises a first transmission rod (11-1), a second transmission rod (11-2) and a bracket for supporting a seed box sealing cover (8) and a sand box sealing cover (10) at the same time, the middle part of the first transmission rod (11-1) is hinged with a roller frame (1) positioned on the outer side of the first transmission rod by virtue of a limiting rod (13), the front end of the first transmission rod (11-1) is overlapped or separated with a collision shaft (12) positioned behind the axis of the roller (2), the rear end of the first transmission rod (11-1) is fixedly connected with the upper end of the second transmission rod (11-2), and the lower end of the second transmission rod (11-2) is fixedly connected with the front end of the bracket.

5. The self-propelled air suction precision water film hill-drop sand screen of claim 4, wherein: the bracket comprises a first supporting shaft (11-3) which is arranged below the seed box sealing cover (8) and is used for supporting the seed box sealing cover (8), and a second supporting shaft (11-4) which is arranged below the sand box sealing cover (10) and is used for supporting the sand box sealing cover (10), wherein the axes of the first supporting shaft (11-3) and the second supporting shaft (11-4) are arranged along the left-right direction, the bracket also comprises a connecting plate (11-5) which is fixedly connected with the same end of the first supporting shaft (11-3) and the second supporting shaft (11-4), and the lower end of the second transmission rod (11-2) is fixedly connected with the connecting plate (11-5)/the first supporting shaft (11-3).

6. The self-propelled air suction precision water film hill-drop sand screen of claim 3, characterized in that: reset springs are connected between the seed box sealing cover (8) and the inoculation box (6) and between the sand box sealing cover (10) and the lower sand box (9).

7. The self-propelled air suction precision water film hill-drop sand screen of claim 1, characterized in that: the seeding roller assembly also comprises a seed box (14) arranged on the roller frame (1), and the outlet of the seed box (14) is connected with the inlet of the seed sowing device (5).

8. The self-propelled air suction precision water film hill-drop sand screen of claim 3, characterized in that: the sand masking machine further comprises a sand box (15) which is arranged on the rack (16) and is positioned behind the seed sowing device (5), and a rear travelling wheel (17) which is connected with the rack (16), wherein a feeding hole of the lower sand box (9) is connected with a discharging hole of the sand box (15), and the rear travelling wheel (17) is connected with a sand discharging shaft of the sand box (15) by virtue of a second transmission mechanism to form transmission fit.

9. The self-propelled air suction precision water film hill-drop sand screen of claim 8, wherein: a driving mechanism is fixed on the frame (16), an output shaft of the driving mechanism is connected with the rear traveling wheel (17) to form transmission fit, an engine (18), a generator (19) and a battery (20) which are sequentially and electrically connected are further fixed on the frame (16), and the battery (20) is connected with the driving mechanism.

10. The self-propelled air suction precision water film hill-drop sand screen of claim 1, characterized in that: the ground grabbing wheel (4) comprises a wheel body (4-1) and a group of wing plates (4-2) arranged on the outer end face of the wheel body (4-1) along the circumferential direction, the outer ends of the wing plates (4-2) extend to the outside of the wheel body (4-1), and the lowest position of each wing plate (4-2) is located below the lowest position of the outer wall of the roller (2) and above the lowest position of the hole digging shovel (3).