Mulching film trepanning device

Abstract

The utility model provides a mulching film trepanning device which comprises a support, the support comprises a horizontal supporting plate and supporting legs fixed to the supporting plate and protruding towards one side of the supporting plate, the support further comprises a sleeve fixed to the other side of the supporting plate, and the supporting plate is provided with a first through hole coaxial with the sleeve; one end of the supporting rod penetrates through the first through hole, the supporting rod can axially move relative to the sleeve and can rotate relative to the sleeve, and the supporting rod is provided with a limiting structure; the buffer spring is sleeved outside the supporting rod; the cutting device comprises a disc-shaped mounting part and a spine part and a collecting part which are fixed to the mounting part, the mounting part and the supporting legs are located on the same side of the supporting plate, and the mounting part is fixed to one end of the supporting rod. The mulching film trepanning device solves the problems that in the prior art, a mulching film trepanning device needs to be heated through electricity, so that cost is high, or crops are prone to being damaged when the mulching film is cut, and the mulching film trepanning device does not damage the crops without electricity.

Description

Technical Field

[0001] The utility model relates to the field of crop planting, in particular to a ground film hole-opening device. Background Art

[0002] In the seedling stage, some existing crops need to be covered with mulch to keep warm and ensure the normal growth of the seedlings. As the crops grow, some crops, such as tobacco crops, need to be manually perforated to grow out of the mulch. In the prior art, perforations are made by a mulch perforating device.

[0003] The patent document with the publication number CN216492362U discloses a simple hot-scalding ground film hole opener, which includes a hand-held rod, a horizontal hanging rod is connected at the end of the hand-held rod, a combustible material placement bucket is hung on the horizontal hanging rod, and a hole opening ring is provided at the bottom of the combustible material placement bucket. This technology uses electric heating to open holes in the ground film, and only needs to contact the ground film, does not need to press down excessively, and will not damage crops. However, this technology requires power supply and has high production costs. In addition, hot-scalding the ground film will also produce harmful gases, which will have adverse effects on human health. The patent document with the publication number CN219894069U discloses a ground film hole opening device, including a hollow film-breaking member, a rod barrel connected to the film-breaking member, a driving rod with one end extending into the inner cavity of the rod barrel and slidably connected to the rod barrel, a collecting member, and a first elastic member sleeved on the collecting member, and the end of the film-breaking member away from the rod barrel is provided with saw teeth for piercing the ground film, and the collecting member passes through the film-breaking member and is slidably connected to the film-breaking member. This technology uses a pressing method to cut the ground film, and uses a collecting piece to collect the cut ground film. However, this technology is likely to damage the stems and leaves of the crop extending outward when cutting the ground film. Summary of the invention

[0004] The utility model solves the problems in the prior art that the mulch film hole opener needs to be heated by electricity, resulting in high cost or easy damage to crops when cutting the mulch film, and provides a mulch film hole opening device that does not require electricity and will not damage crops.

[0005] The utility model provides a ground film hole-opening device, comprising:

[0006] A bracket, the bracket comprising a horizontal support plate and a support leg fixed to the support plate and protruding to one side of the support plate, the bracket further comprising a sleeve fixed to the other side of the support plate, the support plate being provided with a first through hole coaxial with the sleeve;

[0007] A support rod, one end of which passes through the first through hole, the support rod can move axially relative to the sleeve and can rotate relative to the sleeve, and the support rod is provided with a limiting structure;

[0008] A buffer spring, wherein the buffer spring is sleeved outside the support rod, one end of the buffer spring abuts against the limiting structure, and the other end of the buffer spring abuts against the sleeve;

[0009] The cutting device includes a disc-shaped mounting portion, a spike portion and a collecting portion fixed to the mounting portion, wherein the mounting portion and the supporting leg are located on the same side of the supporting plate, and the mounting portion is fixed to one end of the supporting rod, the spike portions are arranged in a circle, the collecting portion is conical, and its tip is the end away from the supporting plate, the collecting portion is located at the center of the circle and has a barb, and the distance between the barb and the mounting portion is greater than the distance between the tip of the spike portion, i.e., the end away from the mounting portion, and the mounting portion.

[0010] Preferably, the bracket includes a height adjustment structure for adjusting the fixed position of the support leg and the support plate.

[0011] Preferably, the supporting leg is cylindrical, and the height adjustment structure comprises an external thread provided on the supporting leg and a nut fixed relative to the supporting plate.

[0012] Preferably, the support plate is provided with a nut groove and a second through hole coaxial with the nut groove for the support leg to pass through, the inner wall of the nut groove is hexagonal, and the six outer walls of the nut fit in one-to-one correspondence with the six inner walls of the nut groove.

[0013] Preferably, the limiting structure is a limiting ring fixed to the outer wall of the support rod or an annular protrusion integrally formed on the outer wall of the support rod.

[0014] Preferably, the outer wall of the support rod is provided with a spiral groove, and the inner wall of the sleeve is provided with a guide block extending into the spiral groove; or, the inner wall of the sleeve is provided with a spiral groove, and the outer wall of the support rod is provided with a guide block extending into the spiral groove.

[0015] Preferably, a handle is provided at the upper end of the support plate.

[0016] Preferably, the bracket includes two fixing rods, one end of each fixing rod is fixed to the support plate, and the other end of each fixing rod is fixed to the outer wall of the sleeve.

[0017] Preferably, both sides of the spike portion have edges.

[0018] Preferably, the barb is formed by slotting the side wall of the collecting portion.

[0019] Compared with the prior art, the utility model has the following beneficial effects: when the mulch film hole-opening device of the utility model is used, the position where the hole needs to be punched is first determined, and the two supporting legs are supported on both sides of the position where the hole needs to be punched. The cutting device is aligned with the position where the hole needs to be punched, and the support rod is first pressed downward, and the sharp spikes of the cutting device and the tip of the collecting part pierce the mulch film, and then the support rod is rotated, and the sharp spikes cut the mulch film, so that the cut part is separated from other parts, and the pressing force is released. The support rod moves upward under the action of the buffer spring, and the barb moves upward with the cut mulch film, and the mulch film is completed. The supporting legs, buffer springs and limiting structure of the mulch film hole-opening device of the utility model can prevent the cutting device from moving downward excessively and damaging crops. At the same time, the mulch film hole-opening device of the utility model does not require electrical energy, and will not produce harmful gases due to hot mulch film. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a ground film hole-opening device according to an embodiment of the present invention.

[0021] Figure 2 The utility model is a schematic diagram of the exploded structure of a ground film hole opening device according to one embodiment of the present invention.

[0022] Figure 3 It is a structural schematic diagram of a ground film hole opening device as viewed from the left side according to one embodiment of the utility model.

[0023] Figure 4 The ground film opening device according to one embodiment of the utility model is Figure 4 Schematic diagram of the structure after cutting along line BB in FIG.

[0024] Figure 5 for Figure 1 Schematic diagram of the enlarged structure of part A.

[0025] Reference numerals

[0026] 1 bracket, 11 support plate, 12 first through hole, 13 support leg, 131 swivel, 14 external thread, 15 sleeve, 151 guide block, 16 fixing rod, 17 nut, 18 nut groove;

[0027] 2 support rod, 21 limiting structure, 22 spiral groove, 23 handle;

[0028] 3 buffer spring;

[0029] 4 cutting device, 41 mounting portion, 42 spike portion, 43 collecting portion, 431 barb, 432 groove. DETAILED DESCRIPTION

[0030] like Figure 1-4As shown, a ground film opening device according to an embodiment of the utility model comprises a bracket 1, a support rod 2, a buffer spring 3 and a cutting device 4. The bracket 1 comprises a horizontal support plate 11 and a support leg 13 fixed to the support plate 11 and protruding to one side of the support plate 11. In this embodiment, two support legs 13 are arranged on the lower side of the support plate 11, and the two support legs 13 are arranged symmetrically about the support rod 2. The bracket 1 also comprises a sleeve 15 fixed to the upper side of the support plate 11. In this embodiment, the bracket 1 comprises two fixing rods 16, one end of the fixing rod 16 is fixed to the support plate 11, and the other end is fixed to the outer wall of the sleeve 15. The two fixing rods 16 make the sleeve 15 suspended and fixed above the support plate 11. The support plate 11 is provided with a first through hole 12 coaxial with the sleeve 15. In other embodiments, the sleeve 15 can also be directly fixed to the support plate 11. In this embodiment, one end of the support rod 2, i.e., the lower end, passes through the first through hole 12, and the support rod 2 can move axially relative to the sleeve 15 and can rotate relative to the sleeve 15. The support rod 2 is provided with a limiting structure 21. In this embodiment, the upper end of the support rod 2 is provided with a rod-shaped handle 23 perpendicular to the support rod 2, and the support rod 2 can be easily pressed down and rotated by the handle. The buffer spring 3 is sleeved outside the support rod 2, one end of the buffer spring 3 is against the limiting structure 21, and the other end is against the sleeve 15. The cutting device 4 includes a disc-shaped mounting portion 41, a spike portion 42 and a collecting portion 43 fixed to the mounting portion 41. In this embodiment, the mounting portion 41 is a horizontal circular plate, parallel to the support plate 11, the mounting portion 41 and the support leg 13 are located on the same side of the support plate 11, and the mounting portion 41 is fixed to one end of the support rod 2, the spike portion 42 is arranged in a circle, and the collecting portion 43 is conical, and its tip is downward and away from the support portion. The collecting portion 43 is located at the center of the circle and has a barb 44 . The distance between the barb 44 and the mounting portion 41 is greater than the distance between the tip of the spike portion 42 , ie, the end away from the mounting portion 41 , and the mounting portion 41 .

[0031] When the mulch film hole-opening device of the utility model is used, the position where the hole needs to be punched is first determined, and the two support legs 13 are supported on both sides of the position where the hole needs to be punched. The cutting device 4 is aligned with the position where the hole needs to be punched, and the support rod 2 is first pressed downward, and the sharp spikes 42 of the cutting device 4 and the tip of the collecting portion 43 pierce the mulch film, and then the support rod 2 is rotated, and the sharp spikes 42 cut the mulch film, so that the cut part is separated from other parts, and the pressing force is released. The support rod 2 moves upward under the action of the buffer spring 3, and the barb 44 moves upward with the cut mulch film, and the mulch film is completed. The support legs 13, buffer spring 3 and limit structure 21 of the mulch film hole-opening device of the utility model can prevent the cutting device 4 from moving downward excessively and damaging crops. At the same time, the mulch film hole-opening device of the utility model does not require electrical energy, and will not produce harmful gases due to hot mulch film.

[0032] like Figure 1 and Figure 4 As shown, the bracket 1 includes a height adjustment structure for adjusting the fixed position of the support leg 13 and the support plate 11. In this embodiment, the support leg 13 is cylindrical, and the height adjustment structure includes an external thread 14 provided on the support leg 13 and a nut 17 fixed relative to the support plate 11. The support plate 11 is provided with a nut groove 18 and a second through hole coaxial with the nut groove 18 for the support leg 13 to pass through. The inner wall of the nut groove 18 is hexagonal, and the six outer walls of the nut 17 are fitted with the six inner walls of the nut groove 18 in a one-to-one correspondence. In this embodiment, a swivel 131 is fixed to the upper end of the support leg 13, and the axis of the swivel 131 is perpendicular to the axis of the support leg 13. The support leg 13 can be easily rotated by grasping the swivel 131, thereby adjusting the height of the support plate 11 and the cutting device 4 to adapt to the height of the ground film that needs to be perforated. In another embodiment (not shown in the figure), the nut 17 may not be provided, but an internal thread is provided on the second through hole of the support plate 11 to cooperate with the external thread 14 of the support leg 13.

[0033] The limiting structure 21 can be a limiting ring fixed to the outer wall of the support rod 2 or an annular protrusion integrally formed on the outer wall of the support rod 2 .

[0034] like Figure 2 and Figure 4 As shown, the outer wall of the support rod 2 is provided with a spiral groove 22, and the inner wall of the sleeve 15 is provided with a guide block 151 extending into the spiral groove 22. In another embodiment (not shown in the figure), the inner wall of the sleeve 15 is provided with a spiral groove 22, and the outer wall of the support rod 2 is provided with a guide block extending into the spiral groove 22. Through the cooperation of the spiral groove 22 and the guide block, the up and down and rotational movements of the support rod 2 are restricted, so its movement is more stable and reliable.

[0035] Both sides of the spike portion 42 are provided with blades, so the ground film can be cut in both clockwise and counterclockwise rotations, which enables the ground film to be cut more thoroughly and thus separated more thoroughly.

[0036] like Figure 5 As shown, the barb 431 is formed by a groove 432 on the side wall of the collecting portion 43, and the lower side wall of the groove 432 is inclined upward to form the barb 431, which can hook the ground film and lift the cut ground film upward, so that the ground film can be torn off manually.

[0037] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Various modifications or equivalent substitutions made by those skilled in the art to the present invention within the essence and protection scope of the present invention also fall within the protection scope of the present invention.

Claims

1. A ground film hole opening device, characterized in that: include: A bracket, the bracket comprising a horizontal support plate and a support leg fixed to the support plate and protruding to one side of the support plate, the bracket further comprising a sleeve fixed to the other side of the support plate, the support plate being provided with a first through hole coaxial with the sleeve; A support rod, one end of which passes through the first through hole, the support rod can move axially relative to the sleeve and can rotate relative to the sleeve, and the support rod is provided with a limiting structure; A buffer spring, wherein the buffer spring is sleeved outside the support rod, one end of the buffer spring abuts against the limiting structure, and the other end of the buffer spring abuts against the sleeve; The cutting device includes a disc-shaped mounting portion, a spike portion and a collecting portion fixed to the mounting portion, wherein the mounting portion and the supporting leg are located on the same side of the supporting plate, and the mounting portion is fixed to one end of the supporting rod, the spike portions are arranged in a circle, the collecting portion is conical, and its tip is the end away from the supporting plate, the collecting portion is located at the center of the circle and has a barb, and the distance between the barb and the mounting portion is greater than the distance between the tip of the spike portion, i.e., the end away from the mounting portion, and the mounting portion.

2. The ground film hole opening device according to claim 1, characterized in that: The bracket includes a height adjustment structure for adjusting the fixed position of the support leg and the support plate.

3. The ground film hole opening device according to claim 2, characterized in that: The supporting leg is cylindrical, and the height adjustment structure includes an external thread arranged on the supporting leg and a nut fixed relative to the supporting plate.

4. The ground film hole opening device according to claim 3, characterized in that: The support plate is provided with a nut groove and a second through hole coaxial with the nut groove for the support leg to pass through. The inner wall of the nut groove is hexagonal, and the six outer walls of the nut fit in a one-to-one correspondence with the six inner walls of the nut groove.

5. The ground film hole opening device according to claim 1, characterized in that: The limiting structure is a limiting ring fixed to the outer wall of the support rod or an annular protrusion integrally formed on the outer wall of the support rod.

6. The ground film hole opening device according to claim 1, characterized in that: The outer wall of the support rod is provided with a spiral groove, and the inner wall of the sleeve is provided with a guide block extending into the spiral groove; or, the inner wall of the sleeve is provided with a spiral groove, and the outer wall of the support rod is provided with a guide block extending into the spiral groove.

7. The ground film hole opening device according to claim 1, characterized in that: A handle is provided at the upper end of the support plate.

8. The ground film hole opening device according to claim 1, characterized in that: The bracket includes two fixing rods, one end of the fixing rod is fixed to the support plate, and the other end of the fixing rod is fixed to the outer wall of the sleeve.

9. The ground film hole opening device according to claim 1, characterized in that: Both sides of the spike portion are provided with edges.

10. The ground film hole opening device according to claim 1, characterized in that: The barbs are formed by slotting the side wall of the collecting portion.

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