Film mulching and soil covering device

Abstract

A film mulching and soil covering device mainly comprises a rack, a land wheel, a furrow opener, a mulching film support, a film supporting rod, a film spreading roller, a soil retaining plate, an adjusting plate, a soil covering roller and a soil covering disc. Soil can enter the soil covering roller from the position above the adjusting plate, a mulching film is pressed into a film ditch under the action of the film pressing wheel, then soil covering is conducted, and the film ditch of the film pressing wheel cannot be blocked by the soil in the process. According to the device, the film pressing wheel and the soil covering device are integrally designed, so that the cost is saved, the device is simpler, and the defects of film edge rolling and abnormal soil covering are overcome due to the facade design at the soil inlet channel opening of the soil covering roller.

Description

Technical Field

[0001] The utility model relates to an agricultural film laying device, in particular to a film laying device used on a film laying seeder, which is suitable for film laying seeders and film laying machines and can realize functions such as film spreading, soil covering at the film edges, soil covering at seed holes, and soil covering in the middle of the ground film. Technical Background

[0002] The existing film laying technology for agricultural sowing has become mature. The basic steps of the film laying process are to place the film on the film support, unfold the film with a film spreading device, press the film edges at both ends with a film pressing device, and cover the edges and the middle of the film with soil using a covering device to complete the film laying process. Due to different land characteristics, there are sandy land, flooded land, and red mud land. During the film laying process, the amount of soil covering required by the film laying device varies. The existing film laying device cannot adapt well to various working conditions, and there may be too much or too little soil covering. The trumpet-shaped setting of the soil inlet channel of the covering device may cause the film edges to curl up and the covering soil to fail to hold down the film, resulting in poor film laying effect.

[0003] In view of the above-mentioned defects, the present invention designs a film laying device that can adjust the amount of soil covering. The amount of soil covering can be adjusted by setting a retaining plate and a soil amount adjusting plate. The integrated design of the film pressing wheel and the soil covering device saves costs and makes the device more concise. The vertical design of the soil covering roller at the soil inlet channel solves the problems of film edge curling and abnormal soil covering. Summary of the Invention

[0004] The purpose of the utility model is to provide a film laying device with a simple structure and the ability to adapt to different land characteristics in order to improve the film laying effect in response to the problems existing in the above-mentioned technology.

[0005] The utility model is composed of the following technical solutions: a film-laying and soil-covering device, suitable for film-laying seeders and film-laying machines, mainly including: a frame, a ground wheel, a furrow opener, a ground film support, a film-supporting rod, a film-unrolling roller, a soil retaining plate, an adjustment plate, a soil-covering roller, and a soil-covering disc. With reference to the forward direction of the frame, a ground wheel is fixedly installed below the front end of the frame, and a furrow opener is fixedly installed behind the ground wheel. The function of the furrow opener is to open a furrow in the ground so that the edge of the ground film is pressed into the furrow by the action of the film-pressing wheel; a soil-covering roller is fixedly installed at the rear end of the frame, and film-pressing wheels are arranged at both ends of the soil-covering roller. The radius of the film-pressing wheel is 4 to 7 cm larger than the radius of the soil-covering roller. The end face of the film-pressing wheel is arranged perpendicular to the soil-covering roller. The soil-covering hole for seed holes and the soil-covering hole in the middle of the ground film are arranged on the soil-covering roller; soil-covering discs are fixedly installed on both sides of the soil-covering roller, and the function of the soil-covering discs is to rotate the soil on the surface into the entrance of the soil-covering roller; between the furrow opener and the soil-covering roller A film spreading roller is arranged between the two rollers, which are connected to the bottom of the frame through a connecting rod. The film spreading roller can float within a certain range. Bracket-shaped retaining plates are fixedly installed on both sides of the film spreading roller. The front end of the bracket-shaped retaining plate is arranged behind the furrow opener. Its function is to block the soil drawn out by the furrow opener and prevent the soil from flowing back into the ditch. The rear end of the retaining plate is arranged outside the covering roller, and an adjustment plate is arranged above the rear end of the retaining plate. The function of the adjustment plate is to protect the film pressing ditch and prevent the soil entering the covering roller from flowing into the film pressing ditch. A ground film support is arranged above the frame, and a film supporting rod is arranged at the rear end of the ground film support.

[0006] The utility model has the advantages of simple structure, high working efficiency and the ability to adapt to different land characteristics for film laying operations.

[0007] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings: Figure 1 -2: 1. Covering roller; 1.1 Pressing wheel; 1.2 Pressing wheel mounting shaft; 1.3 Seeding hole for covering soil; 1.4 Middle covering hole for ground film; 1.5 Spiral soil guide plate; 2. Retaining plate; 2.1 Retaining plate connecting rod; 3. Adjusting plate; 4. Bolt; 5. Furrow opener; 6. Film spreading roller; 7. Covering disc; 8. Film support rod; 9. Ground film; 9.1 Unfolded ground film; 10. Ground film support; 11. Frame; 12. Ground wheel BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a front view of an embodiment of the present utility model.

[0009] Figure 2 This is an embodiment of the utility model Figure 1 Top view of . DETAILED DESCRIPTION

[0010] Reference Figure 1-2A film-laying and soil-covering device is suitable for film-laying seeders and film-laying machines, and mainly includes: a covering roller 1, a retaining plate 2, an adjusting plate 3, a furrow opener 5, a film-spreading roller 6, a covering plate 7, a film-supporting rod 8, a ground film support 10, and a frame 11. With reference to the forward direction of the frame, the front end of the frame 11 is fixedly connected to the ground wheel 12, and the rear end of the ground wheel 12 is provided with a furrow opener 5. The furrow opener 5 is fixedly connected to the bottom of the frame 11 through a connecting rod. The covering roller 1 is fixedly connected to the rear end of the frame 11 through a film-pressing wheel mounting shaft 1.2. Film-pressing wheels 1.1 are welded at both ends of the covering roller 1. The film-pressing wheel 1.1 is 5 cm higher than the covering roller, and the end faces of the film-pressing wheel 1.1 are perpendicular to the covering roller 1. A number of seed hole coverings are provided on the covering roller 1. Soil hole 1.3, a covering hole 1.4 in the middle of the ground film; the function of the seed hole covering hole 1.3 is to cover the seed hole with soil, and the function of the covering hole 1.4 in the middle of the ground film is to cover the middle of the ground film and compact the ground film; covering plates 7 are respectively provided on both sides of the covering drum 1, and the covering plates 7 are fixedly connected to the lower end of the frame. The function of the covering plates 7 is to rotate the soil on the surface into the entrance of the covering drum 1, and a spiral soil guide plate 1.5 is welded in the covering drum 1. The function of the spiral soil guide plate 1.5 is to bring the covering drum 1 into the The soil at the mouth is introduced into the covering roller; a film spreading roller 6 is provided between the furrow opener 5 and the covering roller 1, and the film spreading roller 6 is connected to the bottom of the frame by a connecting rod, and the film spreading roller 6 can float within a certain range; retaining plates 2 are provided on both sides of the film spreading roller 6, and the retaining plates 2 are fixedly installed under the frame through retaining plate connecting rods 2.1; the shape of the retaining plates 2 is similar to that of a bracket, and the front end of the retaining plates 2 is provided behind the furrow opener 5. Its function is to block the soil scratched by the furrow opener and prevent the soil from flowing back into the ditch. The rear end of the retaining plate 2 is provided on the outside of the covering roller 1, and an adjusting plate 3 is provided above the rear end of the retaining plate 2. A long hole is provided on the adjusting plate 3, and the adjusting plate 3 is fixedly connected to the rear end of the retaining plate 2 by bolts 4 and nuts. The distance between the end face of the film pressing wheel 1.1 and the adjusting plate 3 can be adjusted through the long hole, which can prevent the soil entering the covering roller from flowing back into the film pressing ditch and affecting the film laying effect; a ground film support 10 is provided above the frame 11, and a film support rod 8 is provided at the rear end of the ground film support 10.

[0011] When this embodiment is working, the ground film 9 is placed on the ground film support 10, and the unfolded ground film 9.1 is passed around from the back of the film support rod 8 - the front of the film spreading roller 6 - under the covering drum 1 in sequence and laid on the ground. The frame 11 moves forward under the traction of the tractor, and the furrow opener 5 draws a trench on the ground. The retaining plate 2 blocks the excess soil outside the trench, and the film pressing wheel 1.1 presses the edge of the ground film into the trench. At the same time, the covering disc 7 lays part of the soil on the pressed edge of the film, and the covering disc 7 guides the other part of the soil into the entrance of the covering drum 1. The soil introduced into the entrance of the covering drum is introduced into the interior of the covering drum under the action of the spiral soil guide plate 1.5, and then flows out from the seed hole covering hole 1.3 and the covering hole 1.4 in the middle of the ground film, and is pressed on the ground film.

[0012] When this embodiment is working, the distance between the regulating plate 3 and the film pressing wheel 1.1 is appropriately adjusted according to the nature of the soil, so as to control the amount of soil entering the interior of the soil covering drum 1.

[0013] Although the above description has made detailed description of the concepts and examples of the present invention with reference to the accompanying drawings, it can be recognized by those skilled in the art that various improvements and modifications can be made to the present invention without departing from the scope of the claims, and such improvements and modifications should still fall within the scope of protection of the present invention.

Claims

1. A film-laying and soil-covering device, mainly comprising: Frame, ground wheel, furrow opener, ground film support, film supporting rod, film spreading roller, soil retaining plate, adjustment plate, covering roller, covering disk, the ground wheel is fixedly installed at the bottom of the front end of the frame, the furrow opener is fixedly installed behind the ground wheel, the covering roller is fixedly installed at the rear end of the frame, film pressing wheels are arranged at both ends of the covering roller, covering disks are fixedly installed on both sides of the covering roller, a film spreading roller is arranged between the furrow opener and the covering roller, soil retaining plates similar to the shape of brackets are fixedly installed on both sides of the film spreading roller, an adjustment plate is arranged above the rear end of the soil retaining plate, a ground film support is arranged above the frame, and a film supporting rod is arranged at the rear end of the ground film support, which is characterized in that the end face of the film pressing wheel is perpendicular to the covering roller.

2. The film-laying and soil-covering device according to claim 1 is characterized in that An adjustment plate is provided above the rear end of the retaining plate.

3. The film-laying and soil-covering device according to claim 1 is characterized in that The radius of the film pressing wheel is larger than the radius of the soil covering roller and ranges from 40 mm to 70 mm.

4. The film-laying and soil-covering device according to claim 1 or 2, characterized in that The distance between the adjusting plate and the film pressing wheel can be adjusted by bolts.

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