Walnut planting film covering device capable of avoiding night frost

Abstract

The invention discloses a walnut planting film mulching device capable of avoiding night frost, and relates to the technical field of walnut cultivation, the walnut planting film mulching device comprises a vehicle body, the vehicle body is provided with a film releasing mechanism, a rear inclined plumbing arm, an opening mechanism and a hole digging mechanism, and the lower end of the rear inclined plumbing arm is rotatably provided with a film pressing roller used for pressing the edge of a mulching film to the ground; a mulching film wound by a film roll is released through a film releasing mechanism arranged on a vehicle body and sequentially passes through an opening mechanism, a hole digging mechanism and a film pressing roller which are arranged on rear inclined plumbing arms on the two sides of the vehicle body, so that a knife edge of the released mulching film is cut off when the released mulching film passes through the opening mechanism, and when the knife edge passes through the hole digging mechanism, the hole digging mechanism pulls the mulching film on the two sides of the knife edge towards the outer side; the width of the knife edge is increased, so that walnut seedlings penetrate through the widened knife edge, mulching films are laid on planting ridges where the walnut seedlings are planted, and compared with manual mulching film laying and trepanning on the mulching films, the mulching film laying efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of walnut cultivation, in particular to a late frost-avoiding walnut planting film covering device. Background Art

[0002] Walnut is the largest woody oil and dry fruit economic forest tree species in Gansu, and is also the pillar industry in the main production areas. Late frost damage occurs frequently in Gansu production areas in spring, causing a significant reduction in walnut production or even a total loss, which greatly dampens the enthusiasm of fruit farmers to grow walnuts, restricts the increase in walnut production and economic benefits, and affects the healthy development of the walnut industry.

[0003] Therefore, since 2005, the Walnut Research Institute of Longnan Economic Forestry Research Institute has carried out the introduction and screening of new walnut varieties with the goal of avoiding late frost, bearing early, high yield and high quality. After years of hard work, the introduced Yuanlin walnuts, which avoid late frost, have high yield and high quality, were approved by the Gansu Provincial Forestry Variety Approval Committee in 2017. This variety is relatively cold-resistant, sprouts late, and has late flowering periods for both male and female varieties, which can avoid the harm of late frost.

[0004] In addition, for the new walnut varieties, the cultivation techniques such as garden construction, planting, pruning and pest and disease control have also been adjusted and optimized accordingly. After planting, sufficient water should be poured to allow the roots to take root. After the water seeps into the ground, the soil should be covered to conserve moisture. A water-storage tree tray should be built on the ridge, and the tree tray should be covered with black mulch to facilitate moisture conservation and prevent weeds.

[0005] Since the ground film needs to be laid after watering, covering the soil and building the tree tray, it is necessary to make holes in the ground film for the walnut seedlings to pass through, or to cover the ground film on both sides of the walnut seedlings and overlap the inner sides of the ground films on both sides for laying. However, the existing hole-making method for the former is to manually make multiple holes in the ground film and then pass the walnut seedlings through the holes in the ground film, which is labor-intensive, and the latter has the problem of high cost.

[0006] At present, although there are devices for making holes in ground film, it is difficult to use them when seedlings have been planted in the ridges, and it is also difficult to make holes while the ground film is being laid. As a result, when planting walnut seedlings, there is still a problem of large workload for laying ground film or high cost of ground film. Summary of the invention

[0007] The purpose of the present invention is to provide a walnut planting film covering device for avoiding late frost, so as to solve the above technical problems.

[0008] Based on the above purpose, the present invention provides a walnut planting film covering device for avoiding late frost, comprising a vehicle body with at least two wheels on both sides, the vehicle body is provided with a film placing mechanism, a rear oblique hanging arm, an opening mechanism and a hole picking mechanism, the rear oblique hanging arm is obliquely arranged at the rear of the vehicle body, and the rear oblique hanging arms are arranged on both sides of the vehicle body; The lower end of the rear oblique arm is rotatably provided with a film pressing roller for pressing the edge of the ground film toward the ground; The film placing mechanism is arranged on the vehicle body and is located between the rear oblique hanging arms on both sides. The opening mechanism is supported on the rear oblique hanging arms on both sides through a mounting frame. The inner sides of the rear oblique hanging arms on both sides close to each other are provided with a picking hole mechanism. The opening mechanism is located between the film releasing mechanism and the hole digging mechanism. The opening mechanism intermittently cuts a knife edge on the ground film released by the film releasing mechanism. The hole digging mechanism widens the knife edge by pulling the ground film on both sides of the knife edge to allow the walnut seedlings below to pass through.

[0009] Furthermore, the mounting frame and the hole-picking mechanism are both connected to the inclined rear oblique hanging arm through a height adjustment mechanism, so that the opening mechanism and the hole-picking mechanism can be adjusted in height accordingly according to the height of the walnut seedlings.

[0010] Furthermore, the height adjustment mechanism includes a hollow slider and a positioning pin, the hollow slider is slidably set on the rear oblique vertical arm, the mounting frame and the hole-picking mechanism are connected to the hollow slider, the rear oblique vertical arm and the hollow slider are both provided with positioning pin holes for the positioning pin to be inserted, and a plurality of positioning pin holes are arranged at intervals along the length direction on the rear oblique vertical arm, and the positioning pin is fixed to the rear oblique vertical arm by inserting into the positioning pin holes of the hollow slider and the rear oblique vertical arm.

[0011] Furthermore, the hollow slider is provided with guide holes penetrating through both ends, the rear oblique vertical arm is slidably plugged into the guide holes, and the positioning pin hole on the hollow slider is connected to the guide holes.

[0012] Furthermore, the opening mechanism includes a pointed curved knife and a knife head driving assembly. The pointed curved knife is set on a mounting frame through the rotation of a knife shaft and is connected to the knife head driving assembly. The knife head driving assembly intermittently drives the pointed curved knife to rotate up and down so that the tip of the pointed curved knife intermittently pierces the ground film below.

[0013] Furthermore, the hole picking mechanism comprises a hole picking rod, a rubber anti-slip head, a hole plate, a clamping assembly and a pulling assembly, wherein the hole plate is arranged on a hollow slider, and the hole picking rod is rotatably arranged on the hole plate through a guide tube, so that the ends of a pair of the hole picking rods can approach and move away from each other by reciprocating swinging; The clamping assembly is connected to a pair of hole-picking rods, and the clamping assembly drives the pair of hole-picking rods to move closer to and away from each other, so that the pair of hole-picking rods can clamp and release the ground film; The pulling assembly is arranged on the hollow slider and connected to the front end of a pair of hole-picking rods. The pulling assembly pushes and pulls the pair of hole-picking rods to reset the pair of hole-picking rods and pull the ground film on both sides of the cutting edge. The rubber anti-slip head is arranged at the end of the hole-picking rod away from the rear oblique arm to help a pair of ends of the hole-picking rods clamp the ground film, and the rubber anti-slip head is rotatably connected to the hole-picking rod to adapt to the relative movement of the hole-picking rod and the ground film.

[0014] Furthermore, the pulling assembly includes a pulling head and a push-pull cylinder, one side of the pulling head is connected to the push-pull cylinder, and the other side is provided with a movable groove for the front ends of a pair of hole-picking rods to insert and swing; A first movable pin is provided at the front end of the hole-picking rod, and the traction head is provided with a first compensation hole connected to the movable groove. The first movable pin is slidably plugged into the first compensation hole to connect the traction head and a pair of hole-picking rods and adapt to the swing of the front ends of the pair of hole-picking rods.

[0015] Furthermore, the clamping assembly includes a push-pull electromagnet and a guide rod, the top and bottom of the traction head are provided with push-pull electromagnets, and the top and bottom of the traction head are provided with through holes for the guide rod to slide and insert, the push-pull electromagnet is connected to the front end of the hole-picking rod through the guide rod, and the guide rod is rotatably connected to the hole-picking rod.

[0016] Furthermore, the cutter head driving assembly comprises a linkage rod, an axial transmission rod, an inclined rod and a push-pull rod, a handle is provided at the tail of the pointed curved knife, a second compensation hole is provided on the handle along the radial direction of the cutter shaft, and a second movable pin is slidably provided in the second compensation hole; The push-pull rod is slidably connected to the mounting frame in a direction perpendicular to the axial transmission rod, one end of the push-pull rod is connected to the second movable pin, and the other end is hinged to the inclined rod, the inclined rod is tilted relative to the knife shaft, the axial transmission rod is parallel to the knife shaft, a fixing pin hole is provided on the side of the axial transmission rod, and a fixing pin connected to the inclined rod is rotatably provided in the fixing pin hole; One end of the axial transmission rod is connected to the traction head through a linkage rod. The push-pull cylinder is arranged on the mounting frame and is connected to the traction head through the axial transmission rod and the linkage rod. The push-pull cylinder pushes the axial transmission rod so that the inclined rod pushes the knife handle to rotate upward, and the traction head drives a pair of hole-picking rods to pull the ground.

[0017] Further, the mounting frame includes a top plate and a side plate, both sides of the top plate are connected to the hollow slider through the corresponding side plates, a limiting groove is provided on the top plate which passes through the top and the bottom, and a knife shaft hole is provided on the top plate which passes through the side thereof, the knife shaft is rotatably arranged in the knife shaft hole, and the pointed curved knife and the knife handle are rotatably arranged in the limiting groove; The push-pull cylinder is arranged below the top plate, and the side plates on both sides are provided with side holes, and the axial transmission rod is slidably plugged into the side holes; A pair of limiting blocks are arranged on the groove wall on the side of the limiting groove, and the push-pull rod is slidably arranged between the pair of limiting blocks.

[0018] The beneficial effects of the present invention are as follows: the ground film wrapped in the film roll is released by the film releasing mechanism arranged on the vehicle body, and passes through the opening mechanism, the hole picking mechanism and the film pressing roller arranged on the rear oblique vertical arms on both sides of the vehicle body in sequence, so that the released ground film is cut off by the knife edge when passing through the opening mechanism; when the knife edge passes through the hole picking mechanism, the hole picking mechanism pulls the ground film on both sides of the knife edge outwards to increase the width of the knife edge, so that the walnut seedlings pass through the widened knife edge, thereby realizing the laying of ground film on the planting ridges where the walnut seedlings have been planted, and compared with manually laying ground film and drilling holes in the ground film, the ground film laying efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the mounting frame of the present invention; Figure 3 It is a schematic diagram of the internal structure of the mounting frame of the present invention; Figure 4 It is a structural schematic diagram of the cutter head drive assembly of the present invention; Figure 5 It is a structural schematic diagram of the traction head of the present invention; Figure 6 It is a schematic structural diagram of the clamping assembly of the present invention; Figure 7 It is a structural schematic diagram of the hole picking rod of the present invention; Figure 8 It is a structural schematic diagram of the orifice plate of the present invention; Fig. 9 It is a schematic structural diagram of the top plate of the present invention; Fig.10 It is a structural schematic diagram of the pointed scimitar of the present invention; Fig.11 It is a schematic structural diagram of the axial transmission rod of the present invention.

[0021] The numbers in the figure are: 1-car body; 2-film placing mechanism; 3-rear oblique arm; 4-opening mechanism; 5-hole picking mechanism; 6-height adjustment mechanism; 7-positioning pin hole; 8-guide hole; 9-mounting frame; 10-guide tube; 11-movable slot; 12-first movable pin; 13-first compensation hole; 14-through hole; 15-knife handle; 16-second compensation hole; 17-second movable pin; 18-fixing pin hole; 19-fixing pin; 20-limiting slot; 21-knife shaft hole; 22-side hole; 23-limiting block; 24-film pressing roller; 401-pointed curved knife; 402-cutter head drive assembly; 501-hole picking rod; 502-rubber anti-slip head; 503-hole plate; 504-clamping component; 505-pulling component; 601-hollow slider; 602-locating pin; 901-top plate; 902-side plate; 4021- linkage rod; 4022- axial transmission rod; 4023- oblique rod; 4024- push-pull rod; 5041-push-pull electromagnet; 5042-guide rod; 5051-traction head; 5052-push-pull cylinder. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figures 1 to 11 As shown, a walnut planting film covering device for avoiding late frost includes a vehicle body 1 with at least two wheels on both sides, a film placing mechanism 2, a rear oblique arm 3, an opening mechanism 4 and a hole picking mechanism 5 are arranged on the vehicle body 1, the rear oblique arm 3 is obliquely arranged at the rear of the vehicle body 1, and rear oblique arms 3 are arranged on both sides of the vehicle body 1.

[0024] A film pressing roller 24 for pressing the edge of the ground film toward the ground is rotatably provided at the lower end of the rear oblique arm 3 .

[0025] The film placing mechanism 2 is arranged on the vehicle body 1 and is located between the rear oblique arms 3 on both sides. The opening mechanism 4 is supported on the rear oblique arms 3 on both sides through the mounting frame 9. The inner sides of the rear oblique arms 3 on both sides close to each other are provided with hole picking mechanisms 5.

[0026] The opening mechanism 4 is located between the film placing mechanism 2 and the hole digging mechanism 5. The opening mechanism 4 can intermittently cut a knife edge on the ground film released from the film placing mechanism 2, and the hole digging mechanism 5 widens the knife edge by pulling the ground film on both sides of the knife edge to allow the walnut seedlings below to pass through.

[0027] Specifically, the free end of the ground film is pulled out, and after passing through the opening mechanism 4, the hole-picking mechanism 5 and the film pressing roller 24 in sequence, it is fixed to one end of the planting ridge by covering with soil or the like. At this time, the planting ridge is located below the vehicle body 1, and the opening position of the opening mechanism 4 is located directly above the connection line of multiple walnut seedlings on the planting ridge. Then, the vehicle body 1 moves forward in a straight line along the planting ridge, and the speed at which the film-releasing mechanism 2 releases the ground film is consistent with the forward speed of the vehicle body 1. As the vehicle body 1 moves forward, the opening mechanism 4 intermittently cuts a knife edge on the ground film below, and when the knife edge reaches the hole-picking mechanism 5, the knife edge is located above or slightly in front of the corresponding walnut seedling. When the hole-picking mechanism 5 pulls the ground film on both sides of the knife edge, the width of the knife edge is greatly increased, which is conducive to the walnut seedlings passing through the knife edge, realizing the simultaneous laying of the ground film and the opening of the hole, and can be applied to the working condition where the walnut seedlings have been planted.

[0028] The present invention releases the ground film wrapped by the film roll through the film releasing mechanism 2 arranged on the vehicle body 1, and sequentially passes through the opening mechanism 4, the hole picking mechanism 5 and the film pressing roller 24 arranged on the rear oblique vertical arms 3 on both sides of the vehicle body 1, so that the released ground film is cut off by the knife edge when passing through the opening mechanism 4. When the knife edge passes through the hole picking mechanism 5, the hole picking mechanism 5 pulls the ground film on both sides of the knife edge outward to increase the width of the knife edge, so that the walnut seedlings pass through the widened knife edge, thereby realizing the laying of ground film on the planting ridges where the walnut seedlings have been planted. Compared with manually laying ground film and drilling holes in the ground film, the ground film laying efficiency is greatly improved.

[0029] It should be noted that, since the mulch film itself is elastic, the walnut seedlings can be pushed out from the knife edge without using the hole-picking mechanism 5 to pry open the knife edge. However, after testing, it was found that the branches and leaves of the walnut seedlings would be damaged, and the walnut seedlings would be difficult to be pushed out from the knife edge due to the misalignment between the walnut seedlings and the knife edge.

[0030] In addition, although there are film pressing rollers 24 to press the two sides of the ground film, when the laying length of the ground film is long, the laid ground film is easily blown away and lifted by the wind, which affects the opening, digging and laying of the ground film. Therefore, the laid ground film should be covered with soil in time.

[0031] It should be added that since the laying of the ground film and the drilling of holes are carried out simultaneously, in order to ensure that the drilling holes can be accurately aligned with the walnut seedlings, when planting the walnut seedlings, multiple walnut seedlings are placed in the same straight line by drawing or pulling lines on the planting ridges, and the walnut seedlings should be planted at equal intervals.

[0032] In addition, the film unwinding mechanism 2 includes a roller for mounting a film roll and a power device for driving the roller to rotate. Here, the power device is connected to the power system of the vehicle body 1. Since the technology of the film unwinding mechanism 2 is relatively common, it will not be described in detail here.

[0033] The mounting frame 9 and the hole-picking mechanism 5 are both connected to the inclined rear oblique hanging arm 3 through the height adjustment mechanism 6, so that the opening mechanism 4 and the hole-picking mechanism 5 can be adjusted in height according to the height of the walnut seedling. Otherwise, the walnut seedling may collide with the opening mechanism 4 and the hole-picking mechanism 5 due to the walnut seedling being too high, or when the walnut seedling is too short, that is, the hole-picking position of the hole-picking mechanism 5 is too high compared to the walnut seedling, even if the knife edge is opened by the hole-picking mechanism 5, the top of the walnut seedling fails to pass through the opened knife edge in time due to the insufficient height of the walnut seedling. Therefore, the height adjustment of the hole-picking mechanism 5 and the opening mechanism 4 is necessary to adapt to actual production, and the inclined rear oblique hanging arm 3 provides a basis for the height adjustment of the hole-picking mechanism 5 and the opening mechanism 4.

[0034] Among them, the height adjustment mechanism 6 includes a hollow slider 601 and a positioning pin 602. The hollow slider 601 is slidably set on the rear oblique arm 3. The mounting frame 9 and the hole-picking mechanism 5 are both connected to the hollow slider 601. The rear oblique arm 3 and the hollow slider 601 are both provided with a positioning pin hole 7 for the positioning pin 602 to be inserted, and a plurality of positioning pin holes 7 are arranged at intervals along the length direction on the rear oblique arm 3. The positioning pin 602 is inserted into the positioning pin holes 7 of the hollow slider 601 and the rear oblique arm 3 to position the hollow slider 601 on the rear oblique arm 3.

[0035] Preferably, the hollow slider 601 is provided with guide holes 8 passing through both ends, the rear oblique arms 3 are slidably plugged into the guide holes 8, and the positioning pin holes 7 on the hollow slider 601 are connected to the guide holes 8. The integral body formed by the connection between the hollow slider 601 and the mounting frame 9 can also limit and reinforce the rear oblique arms 3 on both sides in the laterally direction, thereby increasing the structural strength and stability of the cultivation device.

[0036] like Figure 3 As shown, the opening mechanism 4 includes a pointed curved knife 401 and a knife head driving assembly 402. The pointed curved knife 401 is rotatably arranged on the mounting frame 9 via a knife shaft 403. The pointed curved knife 401 is connected to the knife head driving assembly 402. The knife head driving assembly 402 intermittently drives the pointed curved knife 401 to reciprocate up and down so that the tip of the pointed curved knife 401 intermittently pierces the ground film below.

[0037] The pointed curved knife 401 is preferably in the shape of a hook, so that its tip can pierce the ground film. The pointed curved knife 401 performs the opening action and reset by reciprocating up and down rotation rather than lifting and lowering, which is more efficient and stable, and is not as easily damaged as the lifting method.

[0038] The hole picking mechanism 5 includes a hole picking rod 501, a rubber anti-slip head 502, a hole plate 503, a clamping assembly 504 and a pulling assembly 505. The hole plate 503 is set on the hollow slider 601. The hole picking rod 501 is rotatably set on the hole plate 503 through the guide tube 10, so that the ends of a pair of hole picking rods 501 can approach and move away through reciprocating swinging.

[0039] The clamping assembly 504 is connected to a pair of hole-picking rods 501 . The clamping assembly 504 drives the pair of hole-picking rods 501 to move closer to and away from each other, so that the pair of hole-picking rods 501 clamp and release the ground film.

[0040] The pulling assembly 505 is disposed on the hollow slider 601 and connected to the front ends of a pair of hole-picking rods 501. The pulling assembly 505 pushes and pulls the pair of hole-picking rods 501 to reset the pair of hole-picking rods 501 and pull the ground film on both sides of the cutting edge.

[0041] That is, the clamping assembly 504 drives the pair of hole-picking rods 501 on the same side to swing back and forth, so that the ends of the pair of hole-picking rods 501 move closer to or farther from each other, thereby clamping and releasing the ground film. The pulling assembly 505 drives the pair of hole-picking rods 501 to move left and right in both directions, so that the pair of hole-picking rods 501 pull to the same side after clamping the ground film, and the pair of hole-picking rods 501 can be reset.

[0042] The rubber anti-slip head 502 is arranged at the end of the hole-picking rod 501 away from the rear oblique arm 3 to help the ends of a pair of hole-picking rods 501 to clamp the ground film, and the rubber anti-slip head 502 is rotatably connected to the hole-picking rod 501 to adapt to the relative movement of the hole-picking rod 501 and the ground film, that is, when the two rubber anti-slip heads 502 clamp the ground film, they will not affect the release of the ground film.

[0043] The pulling assembly 505 includes a traction head 5051 and a push-pull cylinder 5052. One side of the traction head 5051 is connected to the push-pull cylinder 5052, and the other side is provided with a movable groove 11 for the front end of a pair of hole-picking rods 501 to insert and swing.

[0044] A first movable pin 12 is provided at the front end of the hole-picking rod 501, and a first compensation hole 13 connected to the movable groove 11 is provided at the traction head 5051. The first movable pin 12 is slidably plugged with the first compensation hole 13 to connect the traction head 5051 and a pair of hole-picking rods 501 and adapt to the swing of the front end of the pair of hole-picking rods 501.

[0045] Specifically, when the clamping assembly 504 drives the ends of a pair of hole-picking rods 501 to approach each other until the two anti-slip rubber heads clamp the ground film on one side of the blade, the push-pull cylinder 5052 drives the pair of hole-picking rods 501 to move outward synchronously with the help of the traction head 5051. Under the pull of the hole-picking rods 501 on both sides of the blade, the blade on the ground film is pulled open, thereby forming a wider diamond-shaped or elliptical hole structure on the ground film.

[0046] On the contrary, when the clamping assembly 504 drives the ends of a pair of hole-picking rods 501 away from each other, the two anti-slip rubber heads that clamp the ground film release the ground film. Then, the push-pull cylinder 5052 drives the hole-picking rods 501 to reset, so that the anti-slip rubber heads are reset to a position close to the blade, preparing for the next hole-picking.

[0047] In addition, when the two pairs of hole-picking rods 501 on both sides of the vehicle body 1 move away from each other, the gap formed between the hole-picking rods 501 on both sides increases, that is, the hole-picking rods 501 on both sides move away from each other to avoid the walnut seedlings, so that when the vehicle body 1 moves, the walnut seedlings can smoothly pass between the hole-picking rods 501 on both sides.

[0048] Among them, the clamping assembly 504 includes a push-pull electromagnet 5041 and a guide rod 5042, the top and bottom of the traction head 5051 are provided with push-pull electromagnets 5041, and the top and bottom of the traction head 5051 are provided with through holes 14 for the guide rod 5042 to slide and insert, the push-pull electromagnet 5041 is connected to the front end of the hole-picking rod 501 through the guide rod 5042, and the guide rod 5042 is rotatably connected to the hole-picking rod 501.

[0049] When the push-pull electromagnet 5041 is powered on, the push-pull electromagnet 5041 pulls the hole-picking rod 501 through the guide rod 5042, so that the front ends of the pair of hole-picking rods 501 are separated from each other, so that the two anti-skid rubber heads at the ends of the pair of hole-picking rods 501 clamp the ground film. On the contrary, when the push-pull electromagnet 5041 is powered off, the push-pull electromagnet 5041, under the action of its spring, pushes the front ends of the pair of hole-picking rods 501 to approach each other, so that the two anti-skid rubber heads release the ground film. Since the angle of the hole-picking rod 501 changes during the process, the guide rod 5042 and the hole-picking rod 501 are connected by rotation.

[0050] The blade drive assembly 402 includes a linkage rod 4021, an axial transmission rod 4022, a diagonal rod 4023 and a push-pull rod 4024. A handle 15 is provided at the tail of the pointed curved blade 401. A second compensation hole 16 is provided on the handle 15 along the radial direction of the blade shaft 403. A second movable pin 17 is slidably provided in the second compensation hole 16.

[0051] The push-pull rod 4024 is slidably connected to the mounting frame 9 in a direction perpendicular to the axial transmission rod 4022. One end of the push-pull rod 4024 is connected to the second movable pin 17, and the other end is hinged to the inclined rod 4023. The inclined rod 4023 is tilted relative to the knife shaft 403, that is, one end of the inclined rod 4023 is close to the center of the knife shaft 3, and the other end is away from the center of the knife shaft 3. The knife shaft 3 is parallel to the axial transmission rod 4022. The inclined rod 4023 is tilted relative to the knife shaft 3 and the axial transmission rod 4022. When the axial transmission rod 4022 reciprocates along its own axial direction and the axial direction of the knife shaft 3, the length of the inclined rod 4023 in the radial direction of the knife shaft 403 and the axial transmission rod 4022 changes, so that the inclined rod 4023 can push and pull the knife handle 15 upward and downward with the help of the push-pull rod 4024. The axial transmission rod 4022 is arranged parallel to the knife shaft 403. A fixing pin hole 18 is arranged on the side of the axial transmission rod 4022. A fixing pin 19 connected to the inclined rod 4023 is rotatably arranged in the fixing pin hole 18.

[0052] One end of the axial transmission rod 4022 is connected to the traction head 5051 through the linkage rod 4021. The push-pull cylinder 5052 is set on the mounting frame 9 and is connected to the traction head 5051 through the axial transmission rod 4022 and the linkage rod 4021. The push-pull cylinder 5052 pushes the axial transmission rod 4022 to make the inclined rod 4023 push the knife handle 15 to rotate upward, and the traction head 5051 drives a pair of hole-picking rods 501 to pull the ground.

[0053] Specifically, when the push-pull cylinder 5052 pushes the axial transmission rod 4022, the axial transmission rod 4022 drives the traction head 5051 on the opposite side away from the vehicle body 1 through the linkage rod 4021, so that the traction head 5051 pulls a pair of hole-picking rods 501. At the same time, the axial transmission rod 4022 pushes the lower end of the inclined rod 4023 to move below the push-pull rod 4024 through the fixed pin 19, so that the top of the inclined rod 4023 moves in a direction perpendicular to the axial transmission rod 4022, and the push-pull rod 4024 pushes the handle 15 to rotate upward through the second movable pin 17, so that the tip of the pointed curved knife 401 rotates downward, thereby piercing the ground film below the pointed curved knife 401. The role of the second compensation hole 16 and the second movable pin 17 is to adapt to the change of the connection between the push-pull rod 4024 and the handle 15 in the length direction of the handle 15 when the pointed curved knife 401 rotates back and forth.

[0054] like Figure 4 and Fig.11 As shown, the angle between the main body between the two ends of the inclined rod 4023 and the axial transmission rod 4022 is not less than 45°, so as to reduce the axial resistance of the inclined rod 4023 on the axial transmission rod 4022, that is, to facilitate the axial transmission rod 4022 to push the inclined rod 4023 to move.

[0055] Among them, the mounting frame 9 includes a top plate 901 and a side plate 902, both sides of the top plate 901 are connected to the hollow slider 601 through the corresponding side plates 902, and a limiting groove 20 is provided on the top plate 901 that passes through the top and the bottom, and the top plate 901 is provided with a knife shaft hole 21 that passes through its side, the knife shaft 403 is rotatably set in the knife shaft hole 21, the pointed scimitar 401 and the knife handle 15 are rotatably set in the limiting groove 20, and the width of the limiting groove 20 is adapted to the thickness of the tail of the pointed scimitar 401, thereby limiting the pointed scimitar 401 in the axial direction of the knife shaft 403.

[0056] In addition, the push-pull cylinder 5052 is preferably arranged below the top plate 901 to facilitate the stability of the mounting frame 9 and the aesthetics of the cultivation device. In addition, side holes 22 are provided on both side plates 902, and the axial transmission rod 4022 is slidably plugged into the side holes 22, that is, the push-pull cylinder 5052 is arranged below the top plate 901, which is also convenient for guiding the axial transmission rod 4022.

[0057] like Fig. 9 As shown, a pair of limit blocks 23 are provided on the groove walls on both sides of the limit groove 20, and the push-pull rod 4024 is slidably arranged between the pair of limit blocks 23 on the corresponding side, that is, a gap is formed between the pair of limit blocks 23 for the push-pull rod 4024 to slide back and forth, thereby realizing the guidance and limitation of the push-pull rod 4024, so as to ensure that the push-pull rod 4024 drives the knife handle 15 to rotate up and down under the push of the inclined rod 4023, and the pair of limit blocks limit the push-pull rod 4024 in the axial direction of the axial transmission rod 4022 through the limit blocks 23, so that the inclined rod 4023 can push the push-pull rod 4024 to rise and fall, thereby realizing the reciprocating rotation of the pointed scimitar 401.

[0058] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A walnut planting film covering device for avoiding late frost, comprising a vehicle body (1), It is characterized in that The vehicle body (1) is provided with a film placing mechanism (2), a rear oblique hanging arm (3), an opening mechanism (4) and a hole picking mechanism (5); the rear oblique hanging arm (3) is obliquely arranged at the rear of the vehicle body (1), and rear oblique hanging arms (3) are arranged on both sides of the vehicle body (1); The lower end of the rear oblique arm (3) is rotatably provided with a film pressing roller (24) for pressing the edge of the ground film toward the ground; The film placing mechanism (2) is arranged on the vehicle body (1) and is located between the rear oblique hanging arms (3) on both sides; the opening mechanism (4) is supported on the rear oblique hanging arms (3) on both sides through a mounting frame (9); and the inner sides of the rear oblique hanging arms (3) on both sides close to each other are provided with a hole picking mechanism (5); The opening mechanism (4) is located between the film-releasing mechanism (2) and the hole-digging mechanism (5). The opening mechanism (4) intermittently cuts a cut on the ground film released by the film-releasing mechanism (2). The hole-digging mechanism (5) widens the cut by pulling the ground film on both sides of the cut to allow the walnut seedlings below to pass through.

2. A frost-proof walnut planting film covering device according to claim 1, It is characterized in that The mounting frame (9) and the hole-picking mechanism (5) are both connected to the inclined rear oblique hanging arm (3) via a height adjustment mechanism (6), so that the opening mechanism (4) and the hole-picking mechanism (5) can be adjusted in height accordingly according to the height of the walnut seedlings.

3. A frost-proof walnut planting film covering device according to claim 2, It is characterized in that The height adjustment mechanism (6) comprises a hollow slider (601) and a positioning pin (602); the hollow slider (601) is slidably arranged on the rear oblique hanging arm (3); the mounting frame (9) and the hole-picking mechanism (5) are connected to the hollow slider (601); the rear oblique hanging arm (3) and the hollow slider (601) are both provided with a positioning pin hole (7) for the positioning pin (602) to be inserted into; and a plurality of positioning pin holes (7) are arranged at intervals along the length direction on the rear oblique hanging arm (3); the positioning pin (602) is fixed to the rear oblique hanging arm (3) by being inserted into the positioning pin holes (7) of the hollow slider (601) and the rear oblique hanging arm (3).

4. A frost-proof walnut planting film covering device according to claim 3, It is characterized in that The hollow slider (601) is provided with guide holes (8) penetrating through both ends, the rear oblique vertical arm (3) is slidably plugged into the guide holes (8), and the positioning pin hole (7) on the hollow slider (601) is in communication with the guide holes (8).

5. A frost-proof walnut planting film covering device according to claim 4, It is characterized in that The opening mechanism (4) comprises a pointed curved knife (401) and a knife head driving assembly (402); the pointed curved knife (401) is rotatably arranged on a mounting frame (9) via a knife shaft (403) and is connected to the knife head driving assembly (402); the knife head driving assembly (402) intermittently drives the pointed curved knife (401) to rotate up and down reciprocatingly, so that the tip of the pointed curved knife (401) intermittently pierces the ground film below.

6. A frost-proof walnut planting film covering device according to claim 5, It is characterized in that The hole picking mechanism (5) comprises a hole picking rod (501), a rubber anti-slip head (502), a hole plate (503), a clamping assembly (504) and a pulling assembly (505); the hole plate (503) is arranged on a hollow slider (601); the hole picking rod (501) is rotatably arranged on the hole plate (503) via a guide tube (10), so that the ends of a pair of hole picking rods (501) can move closer and farther apart by reciprocating swing; The clamping assembly (504) is connected to a pair of hole-picking rods (501), and the clamping assembly (504) drives the pair of hole-picking rods (501) to move closer to and farther from each other, so that the pair of hole-picking rods (501) clamp and release the ground film; The pulling assembly (505) is arranged on the hollow slider (601) and connected to the front ends of a pair of hole-picking rods (501). The pulling assembly (505) pushes and pulls the pair of hole-picking rods (501) to reset the pair of hole-picking rods (501) and pull the ground film on both sides of the cutting edge; The rubber anti-slip head (502) is arranged at the end of the hole-picking rod (501) away from the rear oblique arm (3) to help the ends of a pair of hole-picking rods (501) clamp the ground film, and the rubber anti-slip head (502) is rotatably connected to the hole-picking rod (501) to adapt to the relative movement of the hole-picking rod (501) and the ground film.

7. A frost-proof walnut planting film covering device according to claim 6, It is characterized in that The pulling assembly (505) comprises a pulling head (5051) and a push-pull cylinder (5052); one side of the pulling head (5051) is connected to the push-pull cylinder (5052), and the other side is provided with a movable groove (11) for the front ends of a pair of hole-picking rods (501) to be inserted and swung; A first movable pin (12) is provided at the front end of the hole picking rod (501), and a first compensation hole (13) communicating with the movable groove (11) is provided at the traction head (5051). The first movable pin (12) and the first compensation hole (13) are slidably plugged into each other to connect the traction head (5051) and a pair of hole picking rods (501) and to accommodate the swinging of the front ends of the pair of hole picking rods (501).

8. The film covering device for walnut planting to avoid late frost according to claim 7, It is characterized in that The clamping assembly (504) comprises a push-pull electromagnet (5041) and a guide rod (5042); the top and bottom of the traction head (5051) are both provided with a push-pull electromagnet (5041); the top and bottom of the traction head (5051) are both provided with a through hole (14) for the guide rod (5042) to be slidably inserted; the push-pull electromagnet (5041) is connected to the front end of the hole-picking rod (501) via the guide rod (5042); and the guide rod (5042) is rotatably connected to the hole-picking rod (501).

9. The film covering device for walnut planting to avoid late frost according to claim 7, It is characterized in that The blade drive assembly (402) comprises a linkage rod (4021), an axial transmission rod (4022), an inclined rod (4023) and a push-pull rod (4024); a blade handle (15) is provided at the tail of the pointed curved blade (401); a second compensation hole (16) is provided on the blade handle (15) along the radial direction of the blade shaft (403); a second movable pin (17) is slidably provided in the second compensation hole (16); The push-pull rod (4024) is slidably connected to the mounting frame (9) in a direction perpendicular to the axial transmission rod (4022); one end of the push-pull rod (4024) is connected to the second movable pin (17), and the other end is hinged to the inclined rod (4023); the inclined rod (4023) is arranged obliquely relative to the knife shaft (403); the axial transmission rod (4022) is arranged parallel to the knife shaft (403); a fixing pin hole (18) is arranged on the side of the axial transmission rod (4022); a fixing pin (19) connected to the inclined rod (4023) is rotatably arranged in the fixing pin hole (18); One end of the axial transmission rod (4022) is connected to the traction head (5051) via a linkage rod (4021); the push-pull cylinder (5052) is arranged on the mounting frame (9) and is connected to the traction head (5051) via the axial transmission rod (4022) and the linkage rod (4021); the push-pull cylinder (5052) pushes the axial transmission rod (4022) so that the inclined rod (4023) pushes the knife handle (15) to rotate upward, and the traction head (5051) drives a pair of hole-picking rods (501) to pull the ground.

10. A frost-proof walnut planting film covering device according to claim 9, It is characterized in that The mounting frame (9) comprises a top plate (901) and a side plate (902), both sides of the top plate (901) are connected to the hollow slider (601) via corresponding side plates (902), a limiting groove (20) penetrating the top and bottom is provided on the top plate (901), and a knife shaft hole (21) penetrating the side surface thereof is provided on the top plate (901), the knife shaft (403) is rotatably arranged in the knife shaft hole (21), and the pointed curved knife (401) and the knife handle (15) are rotatably arranged in the limiting groove (20); The push-pull cylinder (5052) is arranged below the top plate (901), and side holes (22) are arranged on the side plates (902) on both sides, and the axial transmission rod (4022) is slidably plugged into the side holes (22); A pair of limit blocks (23) are provided on the groove wall on the side of the limit groove (20), and the push-pull rod (4024) is slidably arranged between the pair of limit blocks (23).

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