Matched film expanding mechanism

Abstract

The utility model discloses a matched film expanding mechanism, and relates to the technical field of agricultural machine film laying equipment. Comprising a rack, a connecting shaft, a soil covering wheel, a soil control wheel, a soil pressing wheel, a first connecting rod, an auxiliary rod, a second connecting rod and an adjusting frame, the head end of the first connecting rod is rotationally connected with a rack of the film mulching seeder through a connecting shaft; a soil pressing wheel is rotationally arranged at the tail end of the first connecting rod; a second connecting rod is further rotationally connected to the connecting shaft. The second connecting rods are located on the two sides of the first connecting rod correspondingly. A soil covering wheel is rotationally arranged at the tail end of the second connecting rod; the bottom of the first connecting rod is hinged to the head end of the auxiliary rod. An adjusting frame is fixed to the tail end of the auxiliary rod. A soil control wheel is rotationally arranged at the tail end of the auxiliary rod; the soil control wheel is located on the inner side of the soil covering wheel, and a circular groove for bearing soil is formed in the side, facing the soil covering wheel, of the soil control wheel; through cooperation of the mechanism and a film mulching seeder, the soil covering area is effectively controlled, and the area of the exposed part of a mulching film is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery film-laying equipment, in particular to a coordinated film-expanding mechanism. Background Art

[0002] A film spreader is a machine that lays and presses plastic film onto the ground; it's used for mulching crops like corn and wheat. Fertilizer can be pre-applied beneath the film before covering. With advancements in equipment, mulching seeders are now available. After laying, seeds can be sown directly onto the film using a seeding wheel, followed by a secondary covering with soil.

[0003] However, existing mulching seeders have poor soil control during the secondary covering process. As soil is removed from both sides, the mulch is often covered with soil, affecting the film's light and frost protection, and reducing the film's laying effectiveness. Therefore, based on existing equipment, the applicant has equipped the mulching seeder with a film expansion mechanism to increase the exposed area of ​​the mulch. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a cooperative film expanding mechanism, which cooperates with a film covering seeder to effectively control the covering area of ​​the soil and increase the exposed area of ​​the ground film.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A cooperative film expanding mechanism comprises a frame, a connecting shaft, a soil covering wheel, a soil control wheel, a soil pressure wheel, a first connecting rod, a secondary rod, a second connecting rod, and an adjusting frame; the head end of the first connecting rod is rotatably connected to the frame of the film covering seeder through a connecting shaft; the end of the first connecting rod is rotatably provided with a soil pressure wheel; the second connecting rod is also rotatably connected to the connecting shaft; the second connecting rod is respectively located on both sides of the first connecting rod; the end of the second connecting rod is rotatably provided with a soil covering wheel; the bottom of the first connecting rod is hinged to the head end of the secondary rod; the end of the secondary rod is fixed with an adjusting frame; the adjusting frame is sleeved on the rod body of the first connecting rod through an adjusting hole; the end of the secondary rod is rotatably provided with a soil control wheel; the soil control wheel is located on the inner side of the soil covering wheel, and a circular groove for carrying soil is provided on the side of the soil control wheel facing the soil covering wheel; the soil pressure wheel is located behind the soil control wheel.

[0007] Preferably, a sleeve is vertically fixed to the head end of the first connecting rod; a sleeve frame is fixed on the frame; an insertion rod is inserted into the sleeve frame, and the insertion rod passes through the sleeve frame and is inserted into the sleeve.

[0008] Preferably, the side wall of the sleeve is connected to the first connecting rod through a chain.

[0009] Preferably, the soil pressing wheel is rotatably connected to the first connecting rod via a shaft, and adjustment rings are fixedly sleeved on both sides of the soil pressing wheel; and an adjusting nut is provided on the adjustment ring.

[0010] Preferably, a support frame is vertically plugged and fixed to the end of the second connecting rod; and the bottom of the support frame is rotatably connected to the covering wheel.

[0011] Beneficial effects of the utility model:

[0012] The device allows the soil scraped by the covering wheel to first enter the soil controlling wheel and then discharge it in the opposite direction to avoid excessive soil covering a large area of ​​the film; the soil is piled into ridges to ensure the use effect of the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 paying any creative work.

[0014] Figure 1 It is a schematic diagram of the overall connection relationship of the utility model.

[0015] Figure 2 This is a schematic diagram of the rack matching relationship of the present utility model.

[0016] Figure 3 This is a schematic diagram of the connecting rod structure of the present utility model.

[0017] In the figure, the frame 1, the connecting shaft 2, the covering wheel 3, the soil control wheel 4, the circular groove 4.1, the soil pressing wheel 5, the first connecting rod 6, the auxiliary rod 7, the second connecting rod 8, the support frame 8.1, the adjusting frame 9, the adjusting hole 9.1, the adjusting ring 10, the adjusting nut 11, the sleeve 12, the insertion rod 13, the sleeve 14, the chain 15, and the seeding wheel 16. DETAILED DESCRIPTION

[0018] like Figure 1-3As shown, a film expansion mechanism is mainly used in conjunction with a mulching seeder through a first connecting rod 6; wherein, the seeding wheel 16 and the frame 1 are components of the mulching seeder, which are existing equipment and will not be described in detail. The main improvement is that the head end of the first connecting rod 6 is rotatably connected to the frame 1 of the mulching seeder through a connecting shaft 2. A soil pressing wheel 5 is rotatably provided at the end of the first connecting rod 6; a second connecting rod 8 is also rotatably connected to the connecting shaft 2; the second connecting rod 8 is respectively located on both sides of the first connecting rod 6; a covering wheel 3 is rotatably provided at the end of the second connecting rod 8, specifically, a support frame 8.1 is vertically plugged and fixed at the end of the second connecting rod 8; the bottom of the support frame 8.1 is rotatably connected to the covering wheel 3. The covering wheel 3 is a disc structure with an arc surface, with the concave surface facing inward. The bottom of the first connecting rod 6 is hinged to the head end of the auxiliary rod 7; an adjustment bracket 9 is fixed to the end of the auxiliary rod 7; the adjustment bracket 9 is mounted on the rod body of the first connecting rod 6 through an adjustment hole 9.1. A soil control wheel 4 is rotatably mounted on the end of the auxiliary rod 7; the soil control wheel 4 is located inside the covering wheel 3, and a circular groove for supporting soil is provided on the side of the soil control wheel 4 facing the covering wheel 3; the pressure wheel 5 is located behind the soil control wheel 4. The pressure wheel 5 is rotatably connected to the first connecting rod 6 via an axle. Adjustment rings 10 are fixed on both sides of the pressure wheel 5, and an adjustment nut 11 is installed on the adjustment ring 10. The positional relationship between the pressure wheel 5 and the soil control wheel 4 can be adjusted using the adjustment ring 10. The wheel surfaces of the soil control wheel 4 and the pressure wheel 5 are smooth and flat, and will not scratch the film when in use. When placed, the wheel surfaces of the soil control wheel 4 and the pressure wheel 5 are in direct contact with the ground.

[0019] like Figure 3 As shown, a sleeve 14 is vertically fixed to the head end of the first connecting rod 6; a sleeve 12 is fixed to the frame 1; a rod 13 is inserted into the sleeve 12, and the rod 13 passes through the sleeve 12 and is inserted into the sleeve 14. The side wall of the sleeve 14 is connected to the first connecting rod 6 by a chain 15; the chain 15 can provide tension when the device is raised.

[0020] Unless otherwise specified in the above description, the fixing methods are generally welded or screwed using common technical means known to those skilled in the art.

[0021] Here’s how it works:

[0022] The end of the frame 1 in the figure is connected to the mechanism via a connecting shaft 2 and is located between the seeding wheels 16. After the seeding wheels 16 have moved and sown, the covering wheels 3 scrape the soil on both sides inward, directing it along the concave surface of the covering wheels 3 to the inner side, where it covers both sides of the film. When the amount of soil is large, after being diverted to the position of the soil control wheel 4, the soil enters the circular groove of the inner soil control wheel 4. If the amount of soil is too much, it is discharged in the reverse direction a second time, controlling the area of ​​soil and preventing it from covering the middle of the film. After the soil forms a ridge, the pressing wheel 5 rolls the ridge.

[0023] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A film expansion mechanism, characterized in that: The swiveling cam is connected to the swiveling cam by the help of the control gear and the control rod, and the swiveling cam is connected to the control gear of the swiveling cam by the help of the control gear.

2. A coordinated film expansion mechanism according to claim 1, characterized in that: A sleeve is vertically fixed to the head end of the first connecting rod; a sleeve frame is fixed on the frame; an insertion rod is inserted into the sleeve frame, and the insertion rod passes through the sleeve frame and is inserted into the sleeve.

3. The film expansion mechanism according to claim 2, characterized in that: The side wall of the sleeve is connected to the first connecting rod through a chain.

4. The film expansion mechanism according to claim 1, characterized in that: The soil pressing wheel is rotatably connected to the first connecting rod through a shaft, and adjustment rings are fixedly sleeved on both sides of the soil pressing wheel; and adjustment nuts are provided on the adjustment rings.

5. The cooperative film expansion mechanism according to claim 1, characterized in that: The end of the second connecting rod is vertically plugged and fixed with a support frame; the bottom of the support frame is rotatably connected to the covering wheel.

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