A land preparation device for forestry cultivation

Abstract

The application discloses a land preparation device for forestry cultivation and belongs to the technical field of forestry cultivation. The land preparation device for forestry cultivation comprises a rack and further comprises a front support fixed to the front side of the rack, a plough arranged on the front support and equidistantly distributed, a soil turning assembly arranged on the rack and used for digging the soil after ploughing, a rear support fixed to the side of the rack away from the front support, a screen frame movably arranged between the rack and the rear support and used for screening gravel and grass roots in the soil, and a material stirring assembly arranged between the rack and the rear support and used for stirring the gravel and grass roots in the soil. A pushing assembly for pushing the screen frame to displace is arranged on the soil turning assembly. The land preparation device solves the problems of low land preparation efficiency and poor soil quality in the prior art through mechanized ploughing, efficient screening and dynamic crushing, significantly improves the soil conditions for forestry cultivation, and promotes the healthy growth of plant root systems.

Description

Technical Field

[0001] This invention relates to the field of forestry cultivation technology, and more particularly to a land preparation device for forestry cultivation. Background Technology

[0002] Forestry afforestation land preparation aims to prepare the land to provide suitable soil conditions for tree planting, improve soil aeration and water retention, and thus enhance tree growth and survival rates. In the past, forestry afforestation land preparation typically relied on manual labor for leveling, tilling, and breaking up the land. This method was time-consuming, labor-intensive, inefficient, and the quality of manual land preparation was difficult to guarantee. With technological advancements, various mechanized land preparation methods have emerged, such as tillage machines. These machines can reduce manual labor and improve land preparation efficiency.

[0003] Traditional afforestation and land preparation machinery can only till and turn the soil with plows, but weeds and stones are still left inside the soil. Some grass roots will continue to take root and sprout after staying on the ground for a while, consuming soil nutrients; large stones or too many stones will hinder the expansion of plant roots, making it difficult to absorb nutrients and water, thus hindering the normal growth of forest seedlings. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a land preparation device for forestry cultivation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A land preparation device for forestry cultivation includes a frame and further includes:

[0007] A front support is fixed to the front side of the frame, and equidistant plows are mounted on the front support.

[0008] A soil-turning assembly, which is mounted on a frame, is used to dig up the soil after it has been turned over by a plow.

[0009] The rear support is fixed on the side of the frame away from the front support. A screen frame is movably installed between the frame and the rear support for screening gravel and grass roots in the soil.

[0010] And a material removal assembly, which is disposed between the frame and the rear support, for removing gravel and grass roots from the soil;

[0011] The soil turning component is equipped with a pushing component for pushing the screen frame to move, and the material feeding component is connected to the pushing component.

[0012] Preferably, the soil turning assembly includes a rotating shaft rotatably connected to the frame, fixed rods equidistantly arranged on the rotating shaft in a circular pattern, and a bucket fixed to one end of the fixed rods away from the rotating shaft. A baffle plate is fixed on the bucket. The soil turning assembly also includes side plates fixed to the frame and the rear support, a reciprocating screw rotatably connected between the two side plates, a first worm gear arranged on the reciprocating screw, a first worm wheel arranged on the rotating shaft and meshing with the first worm gear, and a drive motor fixed to one of the side plates for driving the reciprocating screw to rotate.

[0013] Preferably, the pushing component includes a sleeve threadedly connected to a reciprocating lead screw and a connecting seat fixedly connected to the sleeve and slidably connected to the frame, the connecting seat being fixedly connected to the screen frame.

[0014] Preferably, the screen frame includes several arc-shaped screens movably disposed between the machine frame and the rear support, and a receiving frame disposed on the end arc-shaped screens, wherein both the arc-shaped screens and the receiving frame are fixedly connected to the connecting seat.

[0015] Preferably, the feeding assembly includes a rotating tube rotatably connected to the arc-shaped screen, a plurality of feeding rods circumferentially and equidistantly arranged on the rotating tube, and a first driving part for driving the rotating tube to rotate.

[0016] Preferably, the first drive unit includes a connecting plate fixed on the connecting seat, a sleeve rotatably connected to the connecting plate and slidably connected to the smooth section of the reciprocating lead screw, a second worm gear disposed on the sleeve, and a second worm wheel disposed on the rotating tube and meshing with the second worm gear.

[0017] Preferably, the rotating tube has a plurality of soil-breaking rods evenly distributed along its axial direction, each soil-breaking rod is provided with a connecting ball that is movably connected to the rotating tube, and the rotating tube is provided with a second driving part for driving the soil-breaking rods to swing.

[0018] Preferably, the second drive unit includes drive rods movably connected to both ends of the rotating tube, a drive shaft disposed between the two drive rods, a connecting rod rotatably connected between the drive shaft and the soil-breaking rod via a ball joint, a working shell fixed between the frame and the rear support via a connecting plate, and protrusions equidistantly disposed within the working shell and movably abutting against the arcuate surface of the drive rods, wherein the protrusions within the working shells at both ends of the rotating tube are staggered.

[0019] Preferably, the second drive unit further includes a gear frame disposed on the working housing and a driven gear disposed on the drive rod and meshing with the gear frame. The driven gear is slidably disposed with the drive rod and rotatably connected to the end of the rotating tube. The gear frame includes a frame body fixedly connected to the working housing, an upper rack equidistantly disposed on the upper side of the frame body, and a lower rack equidistantly disposed on the lower side of the frame body.

[0020] Preferably, the driven gear and the inner wall of the sleeve are both fixed with guide bars, and the smooth sections of the drive rod and the reciprocating screw are both provided with guide grooves that cooperate with the guide bars.

[0021] Compared with the prior art, the present invention provides a land preparation device for forestry cultivation, which has the following beneficial effects:

[0022] 1. This land preparation device for forestry cultivation solves the problems of low efficiency and poor soil quality in traditional land preparation by mechanized tillage, efficient screening and dynamic crushing, significantly improving soil conditions for forestry cultivation and promoting healthy root growth of plants.

[0023] 2. This land preparation device for forestry cultivation achieves efficient separation of soil and debris through multi-layer arc-shaped screens and dynamic material feeding mechanism, improves screening accuracy, and uniformly backfills the finely crushed soil after screening to form a soil environment suitable for plant growth.

[0024] 3. This land preparation device for forestry cultivation, through the coordinated operation of the soil turning component and the pushing component, enables the excavator bucket and the screen frame to work together, reducing manual intervention and improving the efficiency of forestry land preparation.

[0025] 4. This land preparation device for forestry cultivation uses the contact between the drive rod and the protrusion to make the soil breaking rod swing left and right, and the meshing of the driven gear and the rack to make the soil breaking rod swing up and down. The dual action expands the breaking range, ensures the breaking effect on the soil in the arc screen, and is conducive to water penetration and root growth. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0027] Figure 2 For the present invention Figure 1 Enlarged structural diagram of section A in the middle;

[0028] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0029] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the screen frame of the present invention;

[0031] Figure 6 This is a schematic diagram of the material feeding assembly of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the rotating tube end of the present invention;

[0033] Figure 8This is a schematic diagram of the external structure of the drive rod of the present invention;

[0034] Figure 9 This is a schematic diagram of the external structure of the reciprocating lead screw of the present invention;

[0035] Figure 10 This is a schematic diagram of the gear frame of the present invention;

[0036] Figure 11 This is a schematic diagram of the working shell of the present invention.

[0037] In the diagram: 1. Frame; 2. Front support; 201. Plow; 3. Rear support; 4. Screen frame; 401. Arc-shaped screen; 402. Material receiving frame; 5. Rotating shaft; 501. Fixed rod; 502. Bucket; 5021. Baffle plate; 503. Side plate; 504. Reciprocating screw; 505. First worm gear; 506. First worm wheel; 507. Drive motor; 6. Sleeve; 601. Connecting seat; 7. Rotating tube; 70 1. Material feeding rod; 8. Connecting plate; 801. Sleeve; 802. Second worm gear; 803. Second worm wheel; 9. Soil breaking rod; 901. Connecting ball; 10. Drive rod; 1001. Drive shaft; 1002. Connecting rod; 11. Working shell; 111. Protrusion; 12. Gear frame; 121. Frame body; 122. Upper rack; 123. Lower rack; 124. Driven gear; 13. Guide bar; 131. Guide groove. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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 limitations on this invention.

[0040] like Figures 1 to 6As shown, this embodiment proposes a land preparation device for forestry cultivation, including a frame 1, and further including: a front support 2, a soil turning component, a rear support 3, and a material-dispensing component. The front support 2 is fixed to the front side of the frame 1, and equidistantly distributed plows 201 are arranged on the front support 2. The soil turning component is arranged on the frame 1 and is used to dig up the soil after being turned by the plows 201. The rear support 3 is fixed to the side of the frame 1 away from the front support 2, and a screen frame 4 is movably arranged between the frame 1 and the rear support 3 for screening gravel and grass roots in the soil. The material-dispensing component is arranged between the frame 1 and the rear support 3 for removing gravel and grass roots in the soil. The soil turning component is provided with a pushing component for pushing the screen frame 4 to a certain position, and the material-dispensing component is connected to the pushing component.

[0041] Specifically, when using the land preparation device, the frame 1 is installed on a traveling machine (such as a tractor), and then the plow 201 on the frame 1 is driven deep into the soil. Subsequently, the traveling machine drives the land preparation device to move. The plow 201 on the front support 2 breaks up the soil in the forest land, reducing the soil turning load on the soil by the subsequent soil turning components and reducing its digging resistance on the soil. The excavated soil falls onto the screen frame 4. The material-dispersing component moves the stones and grass roots in the soil of the screen frame 4, separating the soil from the stones and grass roots. The soil after screening the stones and grass roots passes through the arc-shaped screen 401 and falls into the tilled area. The soil after screening by the screen frame 4 is evenly scattered in the area behind the plow 201, effectively avoiding the formation of furrows, ensuring the flatness of the land, facilitating water infiltration and root growth, and promoting forestry development.

[0042] like Figure 1 , Figure 3 and Figure 4 As shown, in a preferred embodiment, based on the above method, the soil turning assembly further includes a rotating shaft 5 rotatably connected to the frame 1, a fixed rod 501 circumferentially and equidistantly arranged on the rotating shaft 5, and a bucket 502 fixed to one end of the fixed rod 501 away from the rotating shaft 5. A baffle plate 5021 is fixed on the bucket 502. The soil turning assembly also includes a side plate 503 fixed on the frame 1 and the rear support 3, a reciprocating screw 504 rotatably connected between the two side plates 503, a first worm 505 arranged on the reciprocating screw 504, a first worm wheel 506 arranged on the rotating shaft 5 and meshing with the first worm 505, and a drive motor 507 fixed on one of the side plates 503 for driving the reciprocating screw 504 to rotate.

[0043] Specifically, when the soil turning component is working, the drive motor 507 is controlled to run. The output shaft of the drive motor 507 drives the reciprocating screw 504 to rotate. The first worm 505 on the reciprocating screw 504 meshes with the first worm wheel 506 on the rotating shaft 5, causing the rotating shaft 5 to rotate. The rotating shaft 5 drives the bucket 502 to rotate through the fixed rod 501. The bucket 502 digs up the soil after it has been turned over by the plow 201, and then the screen frame 4 screens the turned soil to prevent stones or grass roots from remaining in the soil after turning over, which would affect the growth of subsequent forestry seedlings. The baffle plate 5021 can effectively prevent the soil dug in the bucket 502 from falling off during turning. Only when it is turned over to the top of the screen frame 4 can the soil in the bucket 502 slide down the inclined surface of the baffle plate 5021 and fall into the screen frame 4 for soil screening.

[0044] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8 As shown, in a preferred embodiment, based on the above method, the pushing component further includes a sleeve 6 threadedly connected to the reciprocating screw 504 and a connecting seat 601 fixedly connected to the sleeve 6 and slidably connected to the frame 1. The connecting seat 601 is fixedly connected to the screen frame 4.

[0045] Specifically, when the soil-turning assembly is working, the reciprocating screw 504 rotates, and the sleeve 6 moves axially along the reciprocating screw 504. The sleeve 6 drives the connecting seat 601 to slide on the frame 1. The connecting seat 601 drives the screen frame 4 to reciprocate laterally between the frame 1 and the rear support 3 in coordination with the flipping of the bucket 502. When the bucket 502 flips to the upper side of the frame 1, the screen frame 4 is placed under the bucket 502 and catches the falling soil. As the soil in the bucket 502 falls out and continues to rotate, the screen frame 4 moves away from the soil-turning assembly to avoid affecting the rotating digging operation of the bucket 502. After the bucket 502 passes the screen frame 4, the screen frame 4 moves laterally towards the soil-turning assembly to prepare for catching the next piece of soil falling from the bucket 502.

[0046] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in a preferred embodiment, based on the above method, the screen frame 4 further includes a plurality of arc-shaped screens 401 movably disposed between the frame 1 and the rear support 3, and a receiving frame 402 disposed on the end arc-shaped screens 401. Both the arc-shaped screens 401 and the receiving frame 402 are fixedly connected to the connecting seat 601. The feeding assembly includes a rotating tube 7 rotatably connected to the arc-shaped screens 401, a plurality of feeding rods 701 circumferentially and equidistantly disposed on the rotating tube 7, and a first driving part for driving the rotating tube 7 to rotate.

[0047] Specifically, the first drive unit drives the rotating tube 7 to rotate within the arc-shaped screen 401. When rotating, the material-pushing rod 701 on the rotating tube 7 can push stones and grass roots in the soil, causing them to be pushed into the next arc-shaped screen 401. The material-pushing component in the next arc-shaped screen 401 continues to push stones and grass roots that have not yet fallen into the soil. By setting up multiple semi-circular screens, the screening effect is improved until the grass roots or stones that remain on the arc-shaped screen 401 after final screening are pushed into the receiving rack 402 on the last side. On the one hand, this avoids grass roots or stones from accumulating in the arc-shaped screen 401, affecting the falling speed of the broken soil and the screening rate. On the other hand, it separates the soil from the stones and grass roots, thereby ensuring the growth and expansion of the forestry plant roots.

[0048] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, in a preferred embodiment, based on the above method, the first driving unit further includes a connecting plate 8 fixed on the connecting seat 601, a sleeve 801 rotatably connected to the connecting plate 8 and slidably connected to the smooth section of the reciprocating screw 504, a second worm 802 disposed on the sleeve 801, and a second worm wheel 803 disposed on the rotating tube 7 and meshing with the second worm 802; the connecting plate 8 moves back and forth synchronously with the connecting seat 601, and the sleeve 801 rotates synchronously with the reciprocating screw 504 when it moves with the connecting plate 8, and the second worm 802 on the sleeve 801 meshes with the second worm wheel 803 on the rotating tube 7 to drive the transmission, thereby making the feeding assembly in the arc screen 401 work.

[0049] like Figure 6 , Figure 7 , Figure 8 , Figure 10 and Figure 11 As shown, in a preferred embodiment, based on the above method, further, the rotating tube 7 has a plurality of soil-breaking rods 9 evenly distributed along its axial direction, and the soil-breaking rods 9 are provided with connecting balls 901 that are movably connected to the rotating tube 7. The rotating tube 7 is provided with a second driving part for driving the soil-breaking rods 9 to swing.

[0050] Furthermore, the second drive unit includes drive rods 10 movably connected to both ends of the rotating tube 7, a drive shaft 1001 disposed between the two drive rods 10, a connecting rod 1002 rotatably connected between the drive shaft 1001 and the soil-breaking rod 9 via a ball joint, a working shell 11 fixed between the frame 1 and the rear support 3 via a connecting plate, and protrusions 111 equidistantly disposed in the working shell 11 and movably abutting against the arc surface of the drive rods 10. The protrusions 111 in the working shells 11 at both ends of the rotating tube 7 are staggered.

[0051] Specifically, the rotating tube 7 is coaxially arranged with the drive rod 10 and the drive shaft 1001. When the rotating tube 7 moves laterally, it drives the drive rod 10 and the drive shaft 1001 to move simultaneously. When the drive rod 10 moves, the arc-shaped surface at its end abuts against the protrusion 111 in the working shell 11 on the left side of the frame 1. The drive rod 10 is subjected to force and drives the drive shaft 1001 to move to the right side of the frame 1 within the rotating tube 7. When the drive shaft 1001 moves, it drives the soil breaking rod 9 to move axially through the connecting rod 1002, so that the soil breaking rod 9 can break the soil clods in the arc-shaped screen 401, making it easier for stones and grass roots in the soil clods to be screened out. At the same time, the broken soil falls quickly off the arc-shaped screen 401. As the drive rod 10 continues to move back and forth along the frame 1, the end of the drive rod 10 on the right side of the rotating tube 7 abuts against the protrusion 111 in the right working shell 11, causing the drive rod 10 to drive the drive shaft 1001 to move to the left again, thereby causing the soil breaking rod 9 to swing left and right on the rotating tube 7, ensuring the breaking effect on the soil in the arc screen 401, thus facilitating the cultivation of forestry plants.

[0052] It should be noted that, in order to further ensure the soil breaking effect of the soil breaking rod 9 on the arc screen 401, the second drive unit also includes a gear frame 12 set on the working shell 11 and a driven gear 124 set on the drive rod 10 and meshing with the gear frame 12. The driven gear 124 is slidably set with the drive rod 10 and rotatably connected to the end of the rotating tube 7. The gear frame 12 includes a frame body 121 fixed to the working shell 11, an upper rack 122 equidistantly set on the upper side of the frame body 121, and a lower rack 123 equidistantly set on the lower side of the frame body 121.

[0053] Specifically, when the drive rod 10 moves back and forth along the rear support 3, the driven gear 124 on the drive rod 10 meshes with the rack on the gear frame 12. When the driven gear 124 meshes with the upper rack 122, it will not mesh with the lower rack 123, and when it meshes with the lower rack 123, it will not mesh with the upper rack 122. When the driven gear 124 meshes with the rack, it will drive the drive rod 10 and the drive shaft 1001 connected to the drive rod 10 to rotate slightly. When the drive shaft 1001 rotates slightly, the connecting rod 1002 connected by the ball joint will drive the soil breaking rod 9 to swing up and down around the connecting ball 901, thereby expanding the soil breaking range of the soil breaking rod 9 within the arc screen 401 and further breaking the soil. The broken soil is conducive to water infiltration and plant root growth.

[0054] like Figure 7 and Figure 9As shown, in a preferred embodiment, based on the above method, further, both the driven gear 124 and the inner wall of the sleeve 801 are fixed with guide bars 13, and the smooth sections of the drive rod 10 and the reciprocating screw 504 are provided with guide grooves 131 that cooperate with the guide bars 13; the driven gear 124 drives the drive rod 10 to rotate through the guide bars 13, and the driven gear 124 can be axially displaced relative to the drive rod 10; the sleeve 801 rotates with the reciprocating screw 504 through the guide bars 13, and the sleeve 801 can be axially displaced relative to the reciprocating screw 504.

[0055] Working steps: Fix the frame 1 of the land preparation device to the traveling machinery, ensure that the plow 201 can penetrate deep into the soil, and adjust the depth and angle of the plow 201 to adapt to different soil conditions.

[0056] The walking machinery drives the land preparation device forward. The plow 201 on the front support 2 performs the initial tillage of the forest soil, breaking up soil clods and loosening the soil. The tilled soil is dug up by the bucket 502 and lifted above the screen frame 4.

[0057] The soil turning component works as follows: the drive motor 507 starts, which drives the reciprocating screw 504 to rotate. Through the worm gear transmission, the rotating shaft 5 rotates, and the bucket 502 flips and dumps the soil into the arc-shaped screen 401.

[0058] The material feeding assembly works as follows: The first drive unit drives the rotating tube 7 to rotate, and the feeding rod 701 moves the stones and grass roots in the soil to the next layer of arc screen 401. The multiple layers of arc screen 401 gradually screen the soil, and the remaining stones and grass roots are finally fed to the receiving rack 402 for easy collection and cleaning.

[0059] When the rotating tube 7 moves laterally, the arc-shaped surface at the end of the drive rod 10 abuts against the protrusion 111 inside the working shell 11, causing the drive shaft 1001 to move back and forth, causing the soil breaking rod 9 to swing and break the soil blocks.

[0060] The driven gear 124 alternately meshes with the racks on the upper and lower sides of the gear frame 12, causing the soil-breaking rod 9 to swing up and down, further expanding the breaking range;

[0061] The sieved fine soil falls through the arc-shaped screen 401 and is evenly spread on the tilled area to avoid furrows and ensure that the land is flat.

[0062] The receiving rack 402 collects residual stones and grass roots to prevent them from accumulating inside the arc-shaped screen 401 and affecting subsequent screening efficiency.

[0063] The mobile machinery continues to move forward, repeating the above steps to complete the large-scale soil preparation work.

[0064] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A ground preparation device for forestry cultivation, comprising a frame (1), characterized in that, Also include: The front support (2) is fixed on the front side of the rack (1), and the ploughs (201) are evenly distributed on the front support (2); The soil turning assembly is arranged on the rack (1) and used for digging the soil after the ploughs (201) are ploughed; The rear support (3) is fixed on the side of the rack (1) away from the front support (2), the screen frame (4) is movably arranged between the rack (1) and the rear support (3), and is used for screening the gravel and grass roots in the soil; And the material stirring assembly is arranged between the rack (1) and the rear support (3), and is used for removing the gravel and grass roots in the soil; Wherein, the soil turning assembly is provided with a pushing assembly for pushing the screen frame (4) to displace, and the material stirring assembly is connected with the pushing assembly; The soil turning assembly includes a rotating shaft (5) rotatably connected to the rack (1), a fixed rod (501) arranged at equal intervals in a circle on the rotating shaft (5), and a bucket (502) fixed at one end of the fixed rod (501) away from the rotating shaft (5), the bucket (502) is fixed with a baffle (5021), the soil turning assembly further includes a side plate (503) fixed on the rack (1) and the rear support (3), a reciprocating screw rod (504) rotatably connected between the two side plates (503), a first worm (505) arranged on the reciprocating screw rod (504), a first worm wheel (506) arranged on the rotating shaft (5) and engaged with the first worm (505), and a driving motor (507) fixed on one of the side plates (503) and used for driving the reciprocating screw rod (504) to rotate; The pushing assembly includes a sleeve (6) threadedly connected with the reciprocating screw rod (504), and a connecting seat (601) fixedly connected with the sleeve (6) and slidably connected to the rack (1), the connecting seat (601) is fixedly connected with the screen frame (4); The screen frame (4) includes a plurality of arc-shaped screens (401) movably arranged between the rack (1) and the rear support (3), and a material receiving frame (402) arranged at the end of the arc-shaped screen (401), the arc-shaped screen (401) and the material receiving frame (402) are fixedly connected with the connecting seat (601); The material stirring assembly includes a rotating pipe (7) rotatably connected to the arc-shaped screen (401), a plurality of groups of material stirring rods (701) arranged at equal intervals in a circle on the rotating pipe (7), and a first driving part for driving the rotating pipe (7) to rotate; The first driving part includes a connecting plate (8) fixed on the connecting seat (601), a sleeve (801) rotatably connected with the connecting plate (8) and slidably connected to the smooth section of the reciprocating screw rod (504), a second worm (802) arranged on the sleeve (801), and a second worm wheel (803) arranged on the rotating pipe (7) and engaged with the second worm (802); The rotating pipe (7) is equidistantly distributed with several soil breaking rods (9) along its axial direction, the soil breaking rods (9) are provided with connecting balls (901) movably connected with the rotating pipe (7), and the rotating pipe (7) is provided with a second driving part for driving the soil breaking rods (9) to swing; The second driving part comprises driving rods (10) movably connected at both ends of the rotating pipe (7), a driving shaft (1001) arranged between the two driving rods (10), a connecting rod (1002) rotatably connected between the driving shaft (1001) and the soil breaking rod (9) through a spherical hinge, a working shell (11) fixedly arranged between the rack (1) and the rear support (3) through a connecting plate, and protrusions (111) equidistantly arranged in the working shell (11) and movably abutting against the arc surface of the driving rod (10), and the protrusions (111) in the working shell (11) at both ends of the rotating pipe (7) are arranged alternately.

2. The land preparation device for forestry cultivation according to claim 1, wherein The second driving part further comprises a gear frame (12) arranged on the working shell (11) and a driven gear (124) arranged on the driving rod (10) and meshing with the gear frame (12), the driven gear (124) is slidably arranged on the driving rod (10) and rotatably connected at the end of the rotating pipe (7), and the gear frame (12) comprises a frame body (121) fixedly connected with the working shell (11), an upper gear rack (122) equidistantly arranged on the upper side of the frame body (121), and a lower gear rack (123) equidistantly arranged on the lower side of the frame body (121).

3. The land preparation device for forestry cultivation according to claim 2, wherein The driven gear (124) and the inner side wall of the sleeve (801) are each fixedly provided with a guide strip (13), and the driving rod (10) and the smooth section of the reciprocating screw rod (504) are each provided with a guide groove (131) matched with the guide strip (13).

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