Automatic covering type agricultural film laying machine

Abstract

The application discloses an automatic covering type agricultural film covering machine, which comprises a frame, a driving wheel for supporting is arranged at the tail end of the frame, traction rods are outwardly extended on both sides of the frame, suspension frames are arranged at the outer ends of the traction rods, a film roll is arranged between the suspension frames, a film covering part is arranged at the lower end of the traction rod, and the film covering part comprises a ditching shaft part which is telescopically arranged at the lower end of the traction rod, a ditching wheel which is connected to the lower end of the ditching shaft part and has a bulldozing part for pushing soil out of the inside of the ditching wheel, and a film pressing shaft part. Compared with the prior art, the film covering machine has the advantages that the ditching depth and the film pressing force can be dynamically adjusted according to the terrain fluctuation through the telescopic adjustment of the ditching shaft part and the film pressing shaft part, the dependence of the traditional film covering machine on the flat ground is overcome, the ditching wheel is used for forming continuous grooves on the ridge side, the film pressing wheel is used for accurately embedding the edges of the film into the grooves, the film covering machine is used for avoiding the covering of the film on the low-lying areas of the ridge side, and the natural infiltration of rainwater along the exposed soil is ensured.

Description

Technical Field

[0001] This invention relates to the field of agricultural mulching technology, and more particularly to an automatic soil-covering type agricultural mulching machine. Background Technology

[0002] Agricultural mulching machines are agricultural machines specifically designed to lay plastic film on the surface of farmland soil. They replace the traditional manual mulching method, greatly improving the efficiency, quality, and consistency of mulching operations, and are very important mechanical equipment in modern agricultural production.

[0003] Currently, the main function of agricultural mulching machines is to dig trenches on both sides of the ridges or furrows to bury the edges of the mulch film, press the edges of the mulch film into the trenches, and cover the edges of the mulch film in the trenches with soil to fix the mulch film and prevent it from being blown away by the wind.

[0004] However, when operating on uneven terrain such as hilly and mountainous areas, the trenching and covering tools, acting on the uneven ground, cause variations in the trenches created and the soil covering the mulch film, easily leading to problems such as film damage, poor adhesion, and incomplete soil covering. Simultaneously, in heavy clay soils, soil can clog the trenching tools, film pressing wheels, and covering tools, resulting in poor or no coverage of the mulch film edges. During windy weather, there is a gap between the laid mulch film and the covering tool. The mulch film is laid first, and then the soil is used to cover the edges. However, strong winds, both before and after laying, can cause the mulch film to deviate, changing its position and the location of the soil covering, sometimes even making it difficult to cover some edges. Furthermore, wind-induced deviations in the mulch film can cause wrinkles, making it difficult to adhere to the soil it covers, thus affecting the growth of subsequent crops.

[0005] In current agricultural mulching machines, the edges of the mulch film are typically covered by soil, and these edges are usually located on both sides of the ridge. Therefore, low-lying areas on both sides of the ridge are also covered by the mulch film. Without damage to the mulch film, water infiltration is difficult. The exposed area in the center of the furrow is the main area for rainwater collection and infiltration, but in water-scarce conditions, water infiltration is also difficult. Further water shortages can lead to water stress for crops, especially during their vigorous growth period. Therefore, in water-scarce environments, it is necessary to widen the furrows or reduce the area of ​​the furrows covered by the mulch film. Summary of the Invention

[0006] In view of the above-mentioned problems, the technical problem to be solved by the present invention is to provide an automatic soil-covering agricultural mulching machine.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: an automatic soil-covering agricultural mulching machine, including a frame, a drive wheel for support near the end of the frame, traction rods extending outward on both sides of the frame, a suspension frame at the outer end of the traction rod, a film roll installed between the two suspension frames, and a mulching part installed at the lower end of the traction rod, the mulching part including:

[0008] The trenching shaft is telescopically mounted at the lower end of the traction rod;

[0009] The furrowing wheel is connected to the lower end of the furrowing shaft and has a pusher inside that pushes the soil out, which is used to remove soil from the edge of the ridge to form a continuous pit on the edge of the ridge.

[0010] The pressure shaft is telescopically mounted at the lower end of the traction rod;

[0011] The pressing roller, connected to the lower end of the pressing shaft, is used to press the plastic film into the pit on the edge of the ridge. The outer side of the pressing roller also has a soil covering part, which is used to fill the pit on the edge of the ridge with soil.

[0012] A further preferred embodiment of the present invention is as follows: a fixing frame 1 is clamped and fixed on the traction rod, and two sets of opposing fixing frames 2 are fixed at the lower end of the fixing frame 1. The grooving shaft and the pressing shaft are respectively adjustablely arranged in the two sets of fixing frames 2.

[0013] A further preferred embodiment of the present invention is as follows: the trenching shaft includes a trenching shaft one and a trenching shaft two arranged vertically and an intermediate limiting sleeve. The trenching shaft one can be fixedly slidably on one side of the fixing frame two. The limiting sleeve is sleeved between the trenching shaft one and the trenching shaft two. The outer side of the limiting sleeve has a longitudinal sliding opening. The outer sides of both the trenching shaft one and the trenching shaft two have fastening bolts extending into the sliding opening, which are used to adjust the position of the trenching shaft one and the trenching shaft two, respectively.

[0014] A further preferred embodiment of the present invention is: the trenching wheel includes a sheet metal main layer, a sheet metal sub-layer, several spacers, and a fixed shaft;

[0015] The fixed shaft is rotatably installed inside the trenching shaft. The main sheet metal layer and the secondary sheet metal layer are both fixed to the fixed shaft with bolts. The opposite sides of the main sheet metal layer and the secondary sheet metal layer are integrally formed with a circumferentially distributed partition plate 1 and partition plate 2. The corresponding partition plate 1 and partition plate 2 are fitted together. Each set of partition plate 1 and partition plate 2 has a pushing part to push the soil outward. Several spacers are fitted onto the fixed shaft to control the spacing between the main sheet metal layer and the secondary sheet metal layer.

[0016] A further preferred embodiment of the present invention is as follows: both the outer surfaces of the sheet metal main layer and the sheet metal sub-layer are circumferentially distributed with external push grooves, and both inner surfaces are circumferentially distributed with internal push grooves. The external push grooves penetrate the grooved wheel axially along the fixed shaft, and the internal push grooves penetrate outwards radially along the fixed shaft.

[0017] The bulldozing unit includes a bulldozing rod 1 with both ends slidably locked in the outer push grooves of the main sheet metal layer and the secondary sheet metal layer, and two adjustable bulldozing rods 2 fixed on the bulldozing rod 1. The two sets of bulldozing rods 2 are respectively embedded in the inner push grooves, and one end of the bulldozing rod 1 has an outwardly extending round shaft.

[0018] The outer end of the trenching wheel also has a limiting disc fixed to the outside of the trenching shaft. The limiting disc has a groove on the side facing the trenching wheel, and the round shaft is locked in the groove.

[0019] A guide cover is also fixed to the outside of the trenching shaft to cover the soil protrusion position on the outside of the trenching wheel and guide the side.

[0020] A further preferred embodiment of the present invention is that the groove is a flat, elliptical rotating shape, the outline of which is formed by a semi-ellipse having a major axis and a minor axis, one end of the major axis being more rounded than the other end.

[0021] A further preferred embodiment of the present invention is: the pressure shaft portion includes a pressure shaft one, a pressure shaft two, and an elastic component;

[0022] A limiting sleeve, similar to that of the trenching shaft, is also fitted between the first and second pressing shafts. The elastic component is fitted inside the limiting sleeve, and both the first and second pressing shafts have fastening bolts extending from the sliding opening of the limiting sleeve on their outer sides.

[0023] The pressure roller is rotatably connected to the inner side of the pressure shaft.

[0024] A further preferred embodiment of the present invention is as follows: the soil covering part includes a connecting rod 1 bolted to the outside of the pressure membrane shaft 2 and a connecting rod 2 bolted to the outside of the connecting rod 1. The angles of both the connecting rod 1 and the connecting rod 2 can be adjusted by bolts. A soil covering wheel 1 is rotatably installed on the inner side of the end of the connecting rod 1 away from the pressure membrane shaft 2, and a soil covering wheel 2 is fixed on the inner side of the end of the connecting rod 2 away from the pressure membrane shaft 2.

[0025] A further preferred embodiment of the present invention is that the soil-covering wheel is in the shape of a boss, and its edge is a cutting edge.

[0026] A further preferred embodiment of the present invention is as follows: the end of the second connecting rod is bent inward and inclined, the second soil-covering wheel is in contact with the inclined surface of the second connecting rod, and is used to push the soil. The distance between the second connecting rod and the first connecting rod can be controlled by a nut.

[0027] Compared with the prior art, the advantages of the present invention are as follows:

[0028] 1. By adjusting the extension and retraction of the trenching shaft and the pressing shaft, the equipment can dynamically adjust the trenching depth and pressing force according to the terrain undulations, overcoming the dependence of traditional mulching machines on flat ground; the trenching wheel opens continuous grooves on the side of the ridge, and the pressing wheel precisely embeds the edge of the mulch film into the groove, avoiding the mulch film covering the low-lying areas on the side of the ridge, and ensuring that rainwater can naturally infiltrate along the exposed soil.

[0029] 2. The trenching wheel and pressing wheel can continuously and efficiently trench in clay and squeeze the edge of the mulch film into the trench, stretching the mulch film to a certain extent, reducing wrinkles and deviations. Even in strong winds, it can reduce wrinkles and shifts, and adhere to the soil it covers.

[0030] 3. The bulldozing unit compresses the plastic film located in the furrow, closing the furrow and compressing the soil fixed to the plastic film to a certain extent, achieving a certain degree of automatic compaction and preventing the plastic film from separating from the soil under the influence of the external environment. Attached Figure Description

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the present invention. In addition, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the coating structure of the present invention;

[0035] Figure 4 This is a schematic diagram of the trenching shaft and trenching wheel structure of the present invention;

[0036] Figure 5 This is a partially exploded structural diagram of the trenching wheel of the present invention;

[0037] Figure 6 This is a partially exploded schematic diagram of another structure of the trenching wheel of the present invention;

[0038] Figure 7 This is a schematic diagram of the bulldozing section structure inside the trenching section of the present invention;

[0039] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure of part A in the diagram;

[0040] Figure 9 This is a schematic diagram of the pressing shaft and pressing wheel structure of the present invention;

[0041] Figure 10 This is a top view schematic diagram of the pressure roller and soil covering part of the present invention;

[0042] Figure 11This is a top view of the overall structure of the present invention.

[0043] In the diagram: 1. Frame; 2. Traction rod; 3. Suspension frame; 4. Film roll; 5. Covering section; 51. Fixing frame one; 52. Fixing frame two; 53. Trenching shaft section; 531. Trenching shaft one; 532. Trenching shaft two; 533. Limiting sleeve; 534. Sliding mouth; 535. Fastening bolt; 54. Trenching wheel; 541. Sheet metal main layer; 542. Sheet metal secondary layer; 543. Outer push groove; 544. Separator plate one; 545. Separator plate two; 546. Inner push groove; 5 47. Fixed shaft; 548. Spacer ring; 55. Pressing shaft section; 551. Pressing shaft one; 552. Pressing shaft two; 553. Elastic component; 56. Pressing wheel; 57. Soil covering section; 571. Connecting rod one; 572. Connecting rod two; 573. Soil covering wheel one; 574. Soil covering wheel two; 58. Limiting disc; 581. Disc groove; 59. Bulldozing section; 591. Bulldozing rod one; 592. Round shaft; 593. Bulldozing rod two; 60. Guide cover; 6. Drive wheel. Detailed Implementation

[0044] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0045] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0046] This embodiment mainly describes an automatic soil-covering type agricultural mulching machine. Please refer to [link / reference]. Figures 1-11 Specifically, the following applies: Agricultural mulching machines are generally used during mulching. However, current problems include their unsuitability for uneven terrain such as hills and mountains, and their difficulty in using them on heavy, sticky soils. Furthermore, when mulching machines lay the film, low-lying areas on both sides of the ridges are also covered, hindering water infiltration in water-scarce conditions. Even if not all low-lying areas on both sides of the ridges are covered, further water shortages can still lead to water infiltration. Therefore, an automatic soil-covering agricultural mulching machine is proposed. Figures 1-3 As shown, it includes a frame 1, a drive wheel 6 for support near the end of the frame 1, traction rods 2 extending outward on both sides of the frame 1, a suspension frame 3 at the outer end of the traction rod 2, a film roll 4 installed between the two suspension frames 3, and a film covering part 5 installed at the lower end of the traction rod 2. The film covering part 5 includes a groove opening shaft part 53, a groove opening wheel 54, a film pressing shaft part 55, and a film pressing wheel 56.

[0047] The trenching shaft 53 is telescopically mounted at the lower end of the traction rod 2;

[0048] The furrowing wheel 54 is connected to the lower end of the furrowing shaft 53 and has a pusher 59 inside to push out the soil, which is used to remove the soil from the edge of the ridge to form a continuous pit on the edge of the ridge.

[0049] The pressure shaft 55 is telescopically mounted at the lower end of the traction rod 2;

[0050] The pressing roller 56 is connected to the lower end of the pressing shaft 55 and is used to press the plastic film into the pit on the edge of the ridge. The outer side of the pressing roller 56 also has a soil covering part 57, which is used to fill the pit on the edge of the ridge with soil.

[0051] Specifically, the automatic soil-covering agricultural mulching machine includes a frame 1 with adjustable drive wheels 6. The frame 1 can be adjusted to different heights to adapt to various ground conditions. A traction rod 2 is integrally mounted on the outside of the frame 1. A suspension frame 3 is adjustablely mounted on the outer end of the traction rod 2. A film roll 4 is installed between the two suspension frames 3; the film roll 4 is detachable for easy replacement. A mulching section 5 is mounted at the lower end of the traction rod 2. The mulching section 5 includes a furrowing shaft 53, a furrowing wheel 54, a film pressing shaft 55, and a film pressing wheel 56. A soil-covering section 57 is also located on the outside of the film pressing wheel 56. The trenching shaft 53 is telescopic, allowing the trenching wheel 54 to be adjusted to different heights. The trenching wheel 54 is used to open long trenches on the edge of the ridge. The plastic film is squeezed into the long trench by the pressing wheel 56, and the long trench is blocked and the plastic film is squeezed under the action of the covering part 57. The pressing shaft 55 is also telescopic, used to control the pressing wheel 56 to press downward. The telescopic setting reduces damage to the plastic film.

[0052] like Figure 3 As shown, a fixing frame 51 is clamped and fixed on the traction rod 2, and two sets of opposing fixing frames 52 are fixed at the lower end of the fixing frame 51. The trenching shaft 53 and the pressing shaft 55 are respectively adjustablely arranged in the two sets of fixing frames 52.

[0053] Specifically, the trenching shaft 53 and the pressing shaft 55 are slidably fixed in two sets of fixing frames 52. The trenching shaft 53 and the pressing shaft 55 can change their positions and be adjusted according to the position of the film roll 4 to ensure that the film is pressed downward into the side groove of the ridge and pressed by the pressing wheel 56.

[0054] like Figure 3As shown, the trenching shaft part 53 includes a trenching shaft one 531 and a trenching shaft two 532 arranged vertically and vertically, and a limiting sleeve 533 in the middle. The trenching shaft one 531 can be fixedly slidably on one side of the fixing frame two 52. The limiting sleeve 533 is sleeved between the trenching shaft one 531 and the trenching shaft two 532. The outer side of the limiting sleeve 533 has a longitudinal sliding opening 534. The outer side of both the trenching shaft one 531 and the trenching shaft two 532 has fastening bolts 535 extending into the sliding opening 534, which are used to adjust the position of the trenching shaft one 531 and the trenching shaft two 532, respectively.

[0055] Specifically, the length of the trenching shaft 53 can be changed according to the degree of fitting of the trenching shaft 1 531 and the trenching shaft 2 532 into the limiting sleeve 533. It is fixed by the fastening bolt 535. When the trenching shaft 53 is squeezed, the trenching shaft 53 will not be compressed, so that the trenching wheel 54 is embedded in the soil.

[0056] like Figures 3-8 As shown, the trenching wheel 54 includes a sheet metal main layer 541, a sheet metal sub-layer 542, several spacers 548, and a fixed shaft 547.

[0057] The fixed shaft 547 is rotatably installed inside the trenching shaft 532. The sheet metal main layer 541 and sheet metal sub-layer 542 are both fixed to the fixed shaft 547 by bolts. The opposite sides of the sheet metal main layer 541 and sheet metal sub-layer 542 are respectively integrally provided with a circumferentially distributed partition plate 1 544 and partition plate 2 545. The corresponding partition plate 1 544 and partition plate 2 545 are fitted together. Each set of partition plate 1 544 and partition plate 2 545 has a pushing part 59 for pushing the soil outward. Several spacers 548 are fitted onto the fixed shaft 547 to control the spacing between the sheet metal main layer 541 and sheet metal sub-layer 542.

[0058] Specifically, the trenching wheel 54 is divided into two layers: a main sheet metal layer 541 and a secondary sheet metal layer 542. During rotation, soil is embedded between the main sheet metal layer 541 and the secondary sheet metal layer 542. Under the action of the first partition plate 544 and the second partition plate 545, multiple chambers are created between the main sheet metal layer 541 and the secondary sheet metal layer 542. When embedded downwards into the soil, the chambers are filled to a certain extent, and the soil is lifted upwards and discharged. Based on this, the ridge edge has a long, strip-shaped groove for embedding the edge of the mulch film.

[0059] It should be noted that several spacer rings 548 are fitted onto a fixed shaft 547. The fixed shaft 547 is bolted to limit the sheet metal main layer 541 and sheet metal sub-layer 542. The spacer rings 548 are clamped between the sheet metal main layer 541 and sheet metal sub-layer 542 for support. The number of spacer rings 548 can be changed to adjust the spacing between the sheet metal main layer 541 and sheet metal sub-layer 542 to ensure that the soil is trapped between them. It should also be noted that partition plate one 544 and partition plate two 545 are fitted together and can expand and contract to ensure the formation of the chamber.

[0060] like Figures 6-7 As shown, both the outer surfaces of the sheet metal main layer 541 and the sheet metal sub-layer 542 are circumferentially distributed with outer push grooves 543, and the inner surfaces are circumferentially distributed with inner push grooves 546. The outer push grooves 543 penetrate the grooved wheel 54 along the fixed shaft 547 axially, and the inner push grooves 546 penetrate outward along the fixed shaft 547 radially.

[0061] The bulldozing unit 59 includes a bulldozing rod 591 with both ends slidably locked in the outer push grooves 543 of the sheet metal main layer 541 and the sheet metal sub-layer 542, respectively. Two sets of adjustable bulldozing rods 593 are fixed on the bulldozing rod 591. The two sets of bulldozing rods 593 are respectively embedded in the inner push grooves 546. One end of the bulldozing rod 591 has an outwardly extending round shaft 592.

[0062] The outer end of the trenching wheel 54 also has a limiting disc 58 fixed to the outside of the trenching shaft 532. The limiting disc 58 has a groove 581 on the side facing the trenching wheel 54, and the round shaft 592 is locked in the groove 581.

[0063] A guide cover 60 is also fixed outside the trenching shaft 532 to cover the soil-exiting position on the outside of the trenching wheel 54 and guide the side.

[0064] Specifically, both the main sheet metal layer 541 and the sub-sheet metal layer 542 have an outward-facing groove 543 and an inward-facing groove 546 on their outward-facing sides, used to limit the bulldozing part 59. It should be noted that the bulldozing part 59 includes a first bulldozing rod 591 and a second bulldozing rod 593. Each set of first bulldozing rods 591 has two sets of vertically arranged second bulldozing rods 593. The two sets of vertically arranged second bulldozing rods 593 can be repositioned on the first bulldozing rod 591 to accommodate different spacing between the main sheet metal layer 541 and the sub-sheet metal layer 542. The first bulldozing rod 591 and the second bulldozing rod 593 are limited by the outward-facing groove 543 and the inward-facing groove 546. Inside the trenching wheel 54, as the trenching wheel 54 rotates, the pushing part 59 inside it also rotates. It moves along the groove 581 via the circular shaft 592, causing the pushing part 59 to slide along the outer pushing groove 543 and the inner pushing groove 546, changing the position of the pushing part 59. Based on this, when the pushing part 59 is close to the inner end of the trenching wheel 54, it can fill the trenching wheel 54 with soil. When it is close to the outer end, the pushing part 59 pushes the soil outward. It should be noted that the position of the groove 581 is fixed, so the direction of the pushing part 59's outward movement and the direction of its return are also fixed. The trenching wheel 54 lifts up the soil, and the lifted soil is squeezed out by the pushing part 59.

[0065] like Figure 6 As shown, the groove 581 is a flattened elliptical shape, and its outline is formed by a semi-ellipse with a major axis and a minor axis, with one end of the major axis being more rounded than the other end.

[0066] Specifically, the position of the groove 581 is fixed and is flat and egg-shaped. The trenching wheel 54 rotates and the bulldozing part 59 moves along the shape of the groove 581, repeatedly pushing the soil outward.

[0067] like Figure 9 As shown, the pressing shaft portion 55 includes a first pressing shaft 551, a second pressing shaft 552, and an elastic component 553;

[0068] A limiting sleeve 533, identical to that of the grooved shaft portion 53, is also sleeved between the first pressing shaft 551 and the second pressing shaft 552. The elastic component 553 is sleeved inside the limiting sleeve 533, and both the first pressing shaft 551 and the second pressing shaft 552 have fastening bolts 535 extending from the sliding opening 534 of the limiting sleeve 533 on their outer sides.

[0069] The pressure roller 56 is rotatably connected to the inner side of the pressure shaft 552.

[0070] Specifically, the pressing shaft 55 has an elastic telescopic function and can also be in a fixed state. In the fixed state, the telescopic length can be adjusted. The positions of pressing shaft one 551 and pressing shaft two 552, which are fitted into the limiting sleeve 533, are adjustable via the fastening bolts 535 of pressing shaft one 551 and pressing shaft two 552. It should be noted that the elastic component 553 is a spring, which is limited within the limiting sleeve 533 and abuts against pressing shaft one 551 and pressing shaft two 552 at both ends. This allows the pressing shaft 55 to support the lower pressing wheel 56 and enable it to telescopically extend and retract, making it suitable for different terrains and reducing the damage rate of the plastic film due to compression.

[0071] like Figure 3 , Figure 9 and Figure 11 As shown, the soil covering part 57 includes a connecting rod 571 connected to the outside of the second pressing shaft 552 by bolts and a connecting rod 572 connected to the outside of the connecting rod 571 by bolts. The angles of the connecting rod 571 and the connecting rod 572 can be adjusted by bolts. A soil covering wheel 573 is rotatably installed on the inner side of the end of the connecting rod 571 away from the second pressing shaft 552, and a soil covering wheel 574 is fixed on the inner side of the end of the connecting rod 572 away from the second pressing shaft 552.

[0072] Specifically, the soil covering part 57 includes a soil covering wheel 1 573 and a soil covering wheel 2 574. The soil covering wheel 1 573 is used to compress the soil and block the side grooves of the furrow opening wheel 54. The soil compresses the side grooves of the ridge and also compresses the mulch film, thereby firmly fixing the edge of the mulch film. Then, in order to be more secure, the soil covering wheel 2 574 covers the edge of the mulch film with soil again.

[0073] like Figure 10 As shown, the soil-covering wheel 573 is a boss-shaped structure with a cutting edge.

[0074] Specifically, the soil covering wheel 573 is protruding. When it moves along the ground, the soil covering wheel 573 cuts into the ground. The protruding side will squeeze the soil during the movement and block the side groove of the ridge.

[0075] like Figure 10 As shown, the end of connecting rod 2 572 is bent inward and inclined. Soil covering wheel 2 574 is in contact with the inclined surface of connecting rod 2 572 to push the soil. The distance between connecting rod 2 572 and connecting rod 1 571 can be controlled by a nut.

[0076] Specifically, the second soil covering wheel 574 is also set at an angle. When moving, the second soil covering wheel 574 pushes the soil, which is the same as the soil covering mechanism of the existing agricultural film covering machine, further covering the edge of the film with soil. At the same time, the distance between the second connecting rod 572 and the first connecting rod 571 can be controlled by rotating the nut, adjusting the soil covering position. The bolt is fixed, and the nuts on both sides clamp the second connecting rod 572. The second connecting rod 572 is sleeved on the bolt. When the position of the nuts on both sides changes, the position of the second connecting rod 572 also changes.

[0077] Working principle: such as Figure 1 As shown, the film roll 4 is supported by the suspension frames 3 on both sides. During the movement of the frame 1, the film roll 4 is driven to gradually release the mulch film along the path. Before the mulch film is released, the ground on both sides of the ridge needs to be grouted. In this application, the grooving device is a grooving wheel 54. Under the weight of itself and the personnel holding it, and under the adjustment of the grooving shaft 53, the grooving wheel 54 is positioned in a suitable position. As the frame 1 moves, the grooving wheel 54 is squeezed against the ground on both sides of the ridge, causing the sheet metal main layer 541 and sheet metal secondary layer 542 to extend into the soil. The soil is squeezed between the sheet metal main layer 541 and sheet metal secondary layer 542, and between the two sets of partition plates 1 544 and 2 545, so that the soil is squeezed and stored inside. Then, as the grooving wheel 54 rotates, the soil is carried upward, so that strip-shaped grooves are formed on both sides of the ridge. The pressing shaft 55 connected to the pressing roller 56 can also be adjusted vertically to allow the pressing roller 56 to press the plastic film into the grooves on both sides of the ridge. This prevents the plastic film from covering the low-lying areas on both sides of the ridge, ensuring that water can seep downwards from these areas. Secondly, as... Figure 2 As shown, when the mulch film is unrolled from the film roll 4 and laid on the ridge, the area near the edge is squeezed into the grooves extending in strips on both sides of the ridge by the film pressing roller 56, which stretches the mulch film to a certain extent, reducing wrinkles and avoiding deviation.

[0078] It should be noted that during the laying of the mulch film, the soil needs to be kept at a certain level of moisture. Moist soil tends to clump under pressure, making it easier for the furrowing wheel 54 to lift it up. Then, as the furrowing wheel 54 rotates, the circular shaft 592 moves within the groove 581, causing the bulldozing part 59 to be in different positions depending on the direction of the furrowing wheel 54. Figure 6As shown, when the furrowing wheel 54 is compressing the soil, the pushing part 59 is located at the innermost end. When it rotates to near the upper end, the pushing part 59 pushes the soil outward, causing the soil to move along the guide cover 60 and to the edge of the side groove of the ridge, ensuring that the grooves on both sides of the ridge are not blocked again. It should also be noted that the first pushing rod 591 moves along the outer pushing groove 543, and the second pushing rod 593 moves along the inner pushing groove 546, pushing the soil outward. The first pushing rod 591 and the second pushing rod 593 are U-shaped, which to a certain extent pushes the lumpy soil outward. Even if there is any residue, it will be poured into the direction of movement of the furrowing wheel 54 as it rotates, and will not move directly into the groove of the ridge, and will be squeezed back into the furrowing wheel 54. Based on this, it should also be noted that furrowing is easier in clay soil, achieving an effect that existing mulching machines cannot achieve.

[0079] After the plastic film is pressed into the groove on the side of the ridge by the pressing roller 56, the covering roller 573 at the rear end cuts directly into the soil near the pressing roller 56. Due to its protruding shape, it pushes the soil and compresses the groove on the side of the ridge to a certain extent, squeezing the edge of the plastic film in the groove to form a covering effect. It should be noted that the plastic film is covered by pushing the soil to cover the edge of the plastic film, that is, the edge of the plastic film is embedded in the soil. Compared with directly covering the edge of the plastic film with loose soil, this method makes it less likely for the plastic film to be blown away by strong winds. It's important to understand that when the pressing wheel 56 squeezes the plastic film into the side groove of the ridge, it compresses the film against the soil in the groove and embeds it into the soil to some extent. Simultaneously, after the pressing wheel 56 confines the film within the groove, the covering wheel 573 immediately presses and covers it with soil. Since the edge of the film is already less susceptible to being blown away by strong winds when it's inside the groove, the added pressure from the soil makes it even more difficult for the film to be blown away. Subsequently, the covering wheel 574 pushes the soil outside the groove, covering it again.

[0080] Based on the above, it should be noted that the pressing shaft 55 can be adjusted to extend and retract, and the fastening bolt 535 can be adjusted to allow the pressing shaft 551 and pressing shaft 552 to be in an elastic state, so as to flexibly compress the mulch film. When encountering undulating conditions, it can achieve expansion and contraction, reducing damage to the mulch film.

[0081] In the description of this invention, it should be noted that the terms "upper," "lower," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0082] The automatic soil-covering agricultural mulching machine provided by the present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the present invention and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An automatic soil-covering type agricultural mulching machine, comprising a frame, a drive wheel for support near the rear of the frame, traction rods extending outward on both sides of the frame, a suspension frame at the outer end of the traction rods, and a film roll installed between the two suspension frames, characterized in that, The lower end of the traction rod is equipped with a film covering part, which includes: The trenching shaft is telescopically mounted at the lower end of the traction rod; The furrowing wheel is connected to the lower end of the furrowing shaft and has a pusher inside that pushes the soil out, which is used to remove soil from the edge of the ridge to form a continuous pit on the edge of the ridge. The pressure shaft is telescopically mounted at the lower end of the traction rod; The pressing roller, connected to the lower end of the pressing shaft, is used to press the plastic film into the pit on the edge of the ridge. The outer side of the pressing roller also has a soil covering part, which is used to fill the pit on the edge of the ridge with soil. The trenching shaft includes trenching shaft one and trenching shaft two arranged at the top and bottom, and a limiting sleeve in the middle; The trenching wheel consists of a main sheet metal layer, a secondary sheet metal layer, several spacers, and a fixed shaft; The fixed shaft is rotatably installed inside the trenching shaft. The main sheet metal layer and the secondary sheet metal layer are both fixed to the fixed shaft with bolts. The opposite sides of the main sheet metal layer and the secondary sheet metal layer are integrally formed with a circumferentially distributed partition plate 1 and partition plate 2. The corresponding partition plate 1 and partition plate 2 are fitted together. Each set of partition plate 1 and partition plate 2 has a bulldozing part to push the soil outward. Several spacers are fitted onto the fixed shaft to control the spacing between the main sheet metal layer and the secondary sheet metal layer. Both the outer surfaces of the sheet metal main layer and the sheet metal sub-layer are circumferentially distributed with outward push grooves, and the inner surfaces are circumferentially distributed with inward push grooves. The outward push grooves penetrate the grooved wheel along the fixed shaft axially, and the inward push grooves penetrate outward along the fixed shaft radially. The bulldozing unit includes a bulldozing rod 1 with both ends slidably locked in the outer push grooves of the main sheet metal layer and the secondary sheet metal layer, and two adjustable bulldozing rods 2 fixed on the bulldozing rod 1. The two sets of bulldozing rods 2 are respectively embedded in the inner push grooves, and one end of the bulldozing rod 1 has an outwardly extending round shaft. The outer end of the trenching wheel also has a limiting disc fixed to the outside of the trenching shaft. The limiting disc has a groove on the side facing the trenching wheel, and the round shaft is locked in the groove. A guide cover is also fixed to the outside of the trenching shaft to cover the soil protrusion position on the outside of the trenching wheel and guide the side.

2. The automatic soil-covering agricultural mulching machine according to claim 1, characterized in that, A fixing frame 1 is clamped and fixed on the traction rod, and two sets of fixing frames 2 facing away from each other are fixed at the lower end of the fixing frame. The trenching shaft and the pressing shaft are respectively adjustablely set in the two sets of fixing frames 2.

3. The automatic soil-covering agricultural mulching machine according to claim 2, characterized in that, The trenching shaft 1 can be fixedly slidable on one side of the fixed frame 2. The limiting sleeve is sleeved between the trenching shaft 1 and the trenching shaft 2. The outer side of the limiting sleeve has a longitudinal sliding opening. Both the trenching shaft 1 and the trenching shaft 2 have fastening bolts extending into the sliding opening on their outer sides, which are used to adjust the position of the trenching shaft 1 and the trenching shaft 2 respectively.

4. The automatic soil-covering agricultural mulching machine according to claim 1, characterized in that, The groove is a flattened elliptical shape, its outline is formed by a semi-ellipse with a major axis and a minor axis, one end of the major axis is more rounded than the other end.

5. The automatic soil-covering agricultural mulching machine according to claim 3, characterized in that, The pressure shaft section includes pressure shaft one, pressure shaft two, and elastic components; A limiting sleeve, similar to that of the trenching shaft, is also fitted between the first and second pressing shafts. The elastic component is fitted inside the limiting sleeve, and both the first and second pressing shafts have fastening bolts extending from the sliding opening of the limiting sleeve on their outer sides. The pressure roller is rotatably connected to the inner side of the pressure shaft.

6. The automatic soil-covering agricultural mulching machine according to claim 5, characterized in that, The soil covering part includes a connecting rod 1 bolted to the outside of the pressure membrane shaft 2 and a connecting rod 2 bolted to the outside of the connecting rod 1. The angles of both connecting rod 1 and connecting rod 2 can be adjusted by bolts. A soil covering wheel 1 is rotatably installed on the inner side of the end of connecting rod 1 away from the pressure membrane shaft 2, and a soil covering wheel 2 is fixed on the inner side of the end of connecting rod 2 away from the pressure membrane shaft 2.

7. The automatic soil-covering agricultural mulching machine according to claim 6, characterized in that, The soil-covering wheel is convex in shape, with its edge being a cutting edge.

8. The automatic soil-covering agricultural mulching machine according to claim 6, characterized in that, The end of the second connecting rod is bent inward and inclined. The second soil-covering wheel is in contact with the inclined surface of the second connecting rod to push the soil. The distance between the second connecting rod and the first connecting rod can be controlled by the nut.

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