Wind-preventing and sand-fixing device for pressing wheat straw and planting trees and method thereof

Abstract

This invention provides an integrated device and method for windbreak and sand fixation, including straw pressing and tree planting. The chassis of a liftable frame is mounted on top of a scissor-type frame, with drive wheels located at the bottom. The tree planting device features a movable insertion tube with a vertical channel for seedling passage. A sand-pushing plate is positioned at the bottom of the vertical channel. The sand-pushing shovel of the straw pressing and sand-pushing device is longitudinally slidable below the chassis and positioned opposite the lower end of the movable insertion tube. The straw pressing frame is hinged to the front end of the chassis. A composite drive mechanism drives the straw pressing frame to swing, performing straw pressing, and drives the sand-pushing shovel to move longitudinally, performing sand-pushing. A seedling delivery device delivers individual seedlings to the upper end of the vertical channel of the insertion tube. This tree planting device and method can automatically complete a series of actions, including seedling delivery, planting, sand removal and covering, and straw pressing for sand prevention. It is lightweight, easy to operate, and suitable for tree planting operations in desert environments.

Description

Technical Field

[0001] This invention relates to the field of tree planting machinery technology, and in particular provides an integrated device and method for windbreak and sand fixation that combines straw pressing and tree planting. Background Technology

[0002] In recent years, environmental protection has become a trend of the times, and windbreak and sand fixation have become major solutions for grassland protection and desertification control in my country. Significant progress has been made in desertification control in China by using methods such as pressing wheat straw to form windbreak and sand-fixing nets or planting trees to achieve the desired effect, realizing a historic transformation from "sand advancing and people retreating" to "greenery advancing and sand retreating." However, manual labor is labor-intensive and inefficient.

[0003] To reduce manual labor intensity and improve tree planting efficiency, large-scale tree planting vehicles have emerged, which are more efficient than traditional manual windbreak and sand fixation. However, most current large-scale tree planting projects are only suitable for ordinary soil environments, using mechanical shovels to dig holes and augers to drill holes, then placing saplings and covering them with soil. This type of vehicle and operation method is not suitable for highly mobile desert sand. In desert environments, before saplings can be placed in the holes, desert sand flows into and buries the pits, preventing the tree roots from reaching the designated pit depth. These vehicles also lack the function of pressing straw to stabilize sand. Furthermore, these large-scale tree planting vehicles have limited functionality, requiring multiple machines to work together to complete digging, planting, covering, and watering. They are bulky, demanding in operation, and have high purchase and energy consumption, making them unsuitable for small-scale tree planting operations. Summary of the Invention

[0004] Based on the above-mentioned technical problems, the present invention provides an integrated device and method for windbreak and sand fixation using straw pressing and tree planting. Based on a small and lightweight equipment, it can perform operations such as digging pits, planting trees, covering soil, irrigating, and pressing straw to fix sand on a single machine. It is suitable for the characteristics of highly mobile desert soil environment, reduces operating energy consumption costs, and is suitable for small-scale tree planting operations.

[0005] To achieve the above objectives, in a first aspect, the present invention provides an integrated device for windbreak and sand fixation, comprising a liftable frame, a planting device, a straw-pressing and sand-pushing device, and a seedling delivery device; the liftable frame includes a scissor-type frame, a chassis, and driving wheels, the chassis being located at the top of the scissor-type frame, and the driving wheels being located at the bottom of the scissor-type frame; the planting device includes a movable insertion tube and a sand-pushing plate, the movable insertion tube sliding vertically on the chassis, the chassis being provided with an insertion drive mechanism for driving the movable insertion tube to insert into the sand, and the movable insertion tube having a vertical channel for the seedling to pass through. The sand-pulling plate is movably fastened to the bottom of the vertical channel, and a sand-pulling drive mechanism is provided on the chassis to drive the sand-pulling plate to move. The straw-pressing and sand-pushing device includes a straw-pushing shovel and a straw-pressing frame. The straw-pushing shovel is slidably mounted longitudinally below the chassis and is arranged opposite to the lower end of the movable insertion tube. The straw-pressing frame is hinged to the front end of the chassis. A compound drive mechanism is provided on the chassis. The compound drive mechanism drives the straw-pressing frame to swing to perform straw-pressing action and drives the straw-pushing shovel to move longitudinally to perform sand-pushing action. The seedling delivery device is set above the movable insertion tube and is used to deliver a single seedling to the upper end of the vertical channel of the insertion tube.

[0006] In some preferred technical solutions, the scissor lift frame includes a first frame and a second frame connected by a transverse intermediate hinge shaft. The upper ends of the first frame and the second frame are slidably connected by a longitudinal guide rod. The first frame and the second frame are provided with a centering lifting drive mechanism. The centering lifting drive mechanism includes a double helical screw, a left-hand nut, a right-hand nut, and a lifting motor. The left-hand nut is hinged to the upper end of the first frame, and the right-hand nut is hinged to the upper end of the second frame. The double helical screw is arranged longitudinally on the chassis and its two ends are respectively engaged with the left-hand nut and the right-hand nut. The lifting motor is driven by the double helical screw.

[0007] In some preferred technical solutions, the bottom of the movable insertion tube is configured as a slanted pointed structure, the sand-removing plate is hinged to the slanted surface of the slanted pointed structure and its lower end is engaged with the vertical channel, the sand-removing driving mechanism includes a reel connected to a winding motor, the pull rope wound on the reel is connected to the upper end of the sand-removing plate, and a return spring is provided near the upper end of the movable insertion tube and the sand-removing plate to drive the sand-removing plate to engage with the bottom of the vertical channel.

[0008] In some preferred technical solutions, the composite drive mechanism includes a crank mounted on the chassis and connected to a drive motor. The crank is connected to a sand-pushing shovel via a first connecting rod and to a straw-pressing frame via a second connecting rod. The upper end of the straw-pressing frame is hinged to the chassis via a support frame, and the lower end is hinged to the chassis via an auxiliary support rod. The hinge points of the support frame and the chassis and the auxiliary support rod and the chassis are the same. The straw-pressing action of the straw-pressing frame and the sand-pushing action of the sand-pushing shovel are intermittently driven by the crank.

[0009] In some preferred technical solutions, the seedling delivery device includes a seedling storage box that slides longitudinally on a vehicle frame. The bottom of the seedling storage box is provided with a seedling delivery hole. The chassis is provided with a delivery drive mechanism that is driven to drive the seedling storage box. The seedling storage box is driven to slide by the delivery drive mechanism so that the seedling delivery hole is aligned with the upper end of the vertical channel, so that the seedlings in the seedling storage box are delivered into the vertical channel.

[0010] In some preferred technical solutions, the seedling storage box includes multiple compartments arranged longitudinally, each compartment is used for storing a single seedling and each compartment is provided with a seedling insertion hole at the bottom. The delivery drive mechanism is used to drive the seedling storage box to slide longitudinally so that the seedling insertion hole of the compartment moves to be aligned with the upper end of the vertical channel.

[0011] In some preferred technical solutions, a top cover plate is slidably provided on the top of the vertical channel, close to the bottom of the seedling storage box, and an opening and closing drive mechanism is provided on the frame, which is driven to be connected to the top cover plate.

[0012] In some preferred technical solutions, the integrated device further includes an irrigation device mounted on the chassis. The irrigation device includes a sprinkler pipe connected to a water storage tank via a water pump. The front end of the sprinkler pipe is radially wound around the outer periphery of the movable insert and the bottom is evenly distributed with sprinkler holes along the length direction.

[0013] To achieve the above objectives, in a second aspect, the present invention provides a method for windbreak and sand fixation using straw pressing and tree planting:

[0014] S10. When the integrated device moves to the nth planting point, during the planting process at the (n-1)th planting point, the straw pressing frame presses the straw on the surface of the sand at the nth planting point into the sand.

[0015] S20. The liftable frame drives the chassis to a low position. With the sand-removing plate fastened to the bottom of the vertical channel, the insertion drive mechanism drives the lower end of the movable tube to be inserted into the sand at the nth planting point.

[0016] S30. The seedling delivery device delivers seedlings to the upper end of the vertical channel, and the seedlings fall down the vertical channel onto the sand-removing plate;

[0017] S40. The sand-pulling drive mechanism drives the sand-pulling plate to pull the sand outward, and the roots of the sapling fall into the sand pit formed by the sand-pulling.

[0018] S50. The crank drives the sand-pushing shovel to move longitudinally through the first connecting rod to push the sand to bury the tree roots, and drives the straw-pressing frame to swing through the second connecting rod to press the straw on the surface of the sand at the (n+1)th planting point into the sand.

[0019] S60. The insertion drive mechanism drives the movable insertion tube to rise and leave the sand, and the liftable frame drives the chassis to rise to a high position, and the movable insertion tube rises further and leaves the seedling;

[0020] S70. While maintaining the chassis in a high position, the integrated device moves to the (n+1)th planting point and repeats the above steps to plant trees at the (n+1)th planting point and press wheat straw into the (n+2)th planting point.

[0021] The technical advantages of this invention, which provides an integrated device and method for windbreak and sand fixation combining straw pressing and tree planting, include at least the following aspects:

[0022] Firstly, based on miniaturized and lightweight equipment, a single machine can perform tasks such as digging holes, planting trees, covering with soil, and pressing straw to stabilize sand. It is easy to operate, has low investment costs and low energy consumption, and is suitable for small-scale tree planting operations.

[0023] Secondly, a movable tube with a vertical channel is used to insert into the soil. Then, the seedling is lowered into the sand at the depth of the movable tube through the vertical channel. During the insertion process, a sand-removing plate is used to block the vertical channel to prevent sand from flowing into the vertical channel. After the seedling is lowered, the sand is removed outward to keep the seedling roots at the set depth. The amount of work is small and it is suitable for sandy soil environments with high mobility.

[0024] Thirdly, a straw-pressing and sand-pushing device was installed. A single crank-connecting rod mechanism drives the sand-pushing shovel to cover the tree roots with soil and drives the straw-pressing frame to press the straw to fix the sand at the next planting point. The sand fixation and soil covering are carried out in sequence, requiring a small maximum output power of the crank to reduce energy consumption. Attached Figure Description

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The accompanying drawings, which are included to provide a further understanding of the invention and constitute a part of this application, illustrate exemplary embodiments of the invention and, together with their descriptions, serve to explain the invention and do not constitute an undue limitation thereof.

[0026] Figure 1 This is a structural schematic diagram of an embodiment of the provided integrated device for windbreak and sand fixation using straw pressing and tree planting.

[0027] Figure 2 This is a structural diagram of the liftable frame in its low-position state.

[0028] Figure 3 This is a structural diagram of the liftable frame in its elevated position.

[0029] Figure 4 This is a schematic diagram of the structure of the straw-pressing and sand-pushing device in the straw-pressing state.

[0030] Figure 5A schematic diagram of the structure of the straw-pressing and sand-pushing device in the sand-pushing state.

[0031] Figure 6 A schematic diagram of the tree planting device before the movable tube is inserted into the sand.

[0032] Figure 7 A schematic diagram of a structure in which a movable tube is inserted into sand and a sand-pulling plate pulls the sand outward.

[0033] Figure 8 This is a schematic diagram of the seedling delivery device.

[0034] Figure 9 This is a schematic diagram of the irrigation device.

[0035] Figure 10 A flowchart illustrating the provided methods for windbreak and sand fixation using straw pressing and tree planting.

[0036] Attached icon descriptions:

[0037] 1-Liftable frame, 11-Scissor lift frame, 12-Chassis, 13-Drive wheel, 14-Guide rod, 15-Double helical screw, 16-Left-hand nut, 17-Right-hand nut, 18-Lifting motor, 19-Drive motor;

[0038] 2-Tree planting device, 21-Modible insert, 22-Sand-removing plate, 23-Slanted tip structure, 24-Roller, 25-Rolling motor, 26-Pull rope, 27-Reset spring;

[0039] 31-Sand pusher, 32-Straw pressing frame, 33-Crank, 34-Drive motor, 35-First connecting rod, 36-Second connecting rod, 37-Longitudinal push rod, 38-Support frame, 39-Auxiliary support rod;

[0040] 4-Seedling delivery device, 41-Seedling storage box, 42-Box compartment, 43-Seedling delivery hole;

[0041] 5-Irrigation device, 51-Water storage tank, 52-Sprinkler pipe, 53-Water pump. Detailed Implementation

[0042] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Unless otherwise specifically stated, the relative arrangement of components and steps set forth in these embodiments does not limit the scope of the present invention. Figures 1 to 9 The present invention provides an embodiment of an integrated device for windbreak and sand fixation that combines straw pressing and tree planting.

[0043] The liftable frame 1 includes a scissor lift frame 11, a chassis 12, and drive wheels 13. The chassis 12 is located on top of the scissor lift frame 11, and the drive wheels 13 are located at the bottom of the scissor lift frame 11. Preferably, each drive wheel 13 is directly driven by an independent drive motor 19 to improve mobility and reduce the load on the frame.

[0044] The tree planting device 2 includes a movable insertion tube 21 and a sand-pulling plate 22. The front ends of the straw pressing frame are provided with outwardly extending pressure rods, and each pressure rod has a longitudinally arranged pressure knife at its front end. The bottom of the movable insertion tube 21 is provided with a slanted pointed structure 23. The movable insertion tube 21 is slidably mounted on the base plate 12. The base plate 12 is provided with an insertion drive mechanism for driving the movable insertion tube 21 to insert into the sand. The movable insertion tube 21 is provided with a vertical channel for the seedling to pass through. The sand-pulling plate 22 is movably fastened to the bottom of the vertical channel. The base plate 12 is provided with a sand-pulling drive mechanism for driving the sand-pulling plate 22 to move. In specific implementation, the insertion drive mechanism is a linear cylinder, and the push rod of the linear cylinder is connected to the movable insertion tube.

[0045] The straw pressing and sand pushing device includes a sand pushing shovel 31 and a straw pressing frame 32. The sand pushing shovel 31 is longitudinally slidably installed below the chassis 12 and is arranged opposite to the lower end of the movable insertion tube 21. The straw pressing frame 32 is hinged to the front end of the chassis 12. The chassis 12 is provided with a compound drive mechanism, which drives the straw pressing frame 32 to swing to perform straw pressing action and drives the sand pushing shovel 31 to move longitudinally to perform sand pushing action.

[0046] The seedling delivery device 4 is installed above the movable insertion tube 21 and is used to deliver a single seedling to the upper end of the vertical channel of the insertion tube.

[0047] In practical implementation, the provided integrated device is equipped with a control system, with a computer, PLC programmable controller, or microcontroller as the core control component. This system is connected to the liftable frame, drive wheels, tree planting device, and straw-pressing and sand-pushing device. Through programming, the integrated device automatically controls its movement at different planting points, the raising and lowering of the chassis, the lifting and lowering of the movable insertion tube, and the movements of the straw-pressing frame and sand-pushing shovel, all in a coordinated and sequential manner to automatically complete the tree planting action. The following section will combine... Figure 9 This section introduces the specific steps involved in planting trees.

[0048] like Figure 10 The tree planting method using this integrated device for windbreak and sand fixation, which combines straw pressing and tree planting, includes the following steps:

[0049] S10. The integrated device moves to the nth planting point. During the planting process at the (n-1)th planting point, the straw pressing frame 32 presses the straw on the surface of the sand at the nth planting point into the sand.

[0050] S20. The liftable frame 1 drives the chassis 12 to a low position. With the sand-removing plate 22 fastened to the bottom of the vertical channel, the drive mechanism drives the lower end of the movable tube 21 to be inserted into the sand at the nth planting point.

[0051] S30. The seedling delivery device 4 delivers seedlings to the upper end of the vertical channel, and the seedlings fall down along the vertical channel onto the sand-removing plate 22;

[0052] S40. The sand-pulling drive mechanism drives the sand-pulling plate 22 to pull the sand outward, and the roots of the sapling fall into the sand pit formed by the sand-pulling.

[0053] S50. The crank 33 drives the sand-pushing shovel 31 to move longitudinally through the first connecting rod 35, thereby pushing the sand to bury the tree roots. The crank 33 drives the straw-pressing frame 32 to swing through the second connecting rod 36, pressing the straw on the surface of the sand at the (n+1)th planting point into the sand.

[0054] S60. The insertion drive mechanism drives the movable insertion tube 21 to rise and leave the sand, and the liftable frame 1 drives the chassis 12 to rise to a high position, and the movable insertion tube 21 rises further and leaves the seedling.

[0055] S70. While maintaining the chassis 12 in a high position, the integrated device moves to the (n+1)th planting point and repeats the above steps to plant trees at the (n+1)th planting point and press wheat straw into the (n+2)th planting point.

[0056] This invention provides an integrated device and method for windbreak and sand fixation using straw pressing and tree planting. Based on miniaturized and lightweight equipment, a single machine can perform operations such as digging pits, planting trees, covering with soil, irrigating, and pressing straw to fix sand. The seedlings can be planted to a set depth, which can effectively improve the survival rate of seedlings. The amount of sand dug is small, and it is suitable for the characteristics of highly mobile desert soil environment, reducing operating energy consumption costs and making it suitable for small-scale tree planting operations.

[0057] like Figure 2 and Figure 3 As shown, in a preferred embodiment, the scissor lift frame 11 includes a first frame and a second frame connected by a transverse intermediate hinge shaft. The upper ends of the first and second frames are slidably connected by a longitudinal guide rod 14. The first and second frames are equipped with a centering lifting drive mechanism, which includes a double helical screw 15, a left-handed nut 16, a right-handed nut 17, and a lifting motor 18. The left-handed nut 16 is hinged to the upper end of the first frame, and the right-handed nut 17 is hinged to the upper end of the second frame. The double helical screw 15 is arranged longitudinally on the chassis 12, and its two ends are respectively engaged with the left-handed nut 16 and the right-handed nut 17. The lifting motor 18 is driven by the double helical screw 15. With this structure, the scissor lift frame maintains longitudinal symmetry before and after lifting, improving the stability of the chassis and its components, and allowing it to rise and pass through planted seedlings without damaging them.

[0058] like Figure 4 and Figure 5 As shown, in a specific implementation, the upper end of the straw pressing frame 32 is hinged to the chassis 12 via a support frame 38, and the lower end is hinged to the chassis 12 via an auxiliary support rod 39. Specifically, one end of the support frame 38 is fixedly connected to the upper end of the straw pressing frame 32, and the other end is hinged to the chassis 12; one end of the auxiliary support rod is fixedly connected to the lower end of the straw pressing frame 32, and the other end is hinged to the chassis 12. The hinge points of the support frame 38 and the chassis are the same as the hinge points of the auxiliary support rod 39 and the chassis. The composite drive mechanism includes components installed on the chassis. The crank 33, connected to the drive motor 34 via the disc 12, is connected to the longitudinal push rod base 12 of the sand-pushing shovel 31 via the first connecting rod 35. The crank 33 drives the straw-pressing frame 32 to press straw and the sand-pushing shovel 31 to push sand intermittently, so that sand fixation and soil covering are carried out in sequence. This requires a small maximum output power of the crank, thus reducing energy consumption. In addition, the straw-pressing frame is supported by the support frame and auxiliary support rod, which increases the structural strength and wind resistance, making it suitable for use in desert environments with strong winds.

[0059] like Figure 1 and Figure 9 As shown, in a preferred embodiment, an irrigation device 5 is provided on the chassis 12. The irrigation device 5 includes a sprinkler pipe 52 connected to the water storage tank 51 via a water pump 53. The front end of the sprinkler pipe 52 is radially wound around the outer periphery of the movable insertion tube 21, and the bottom is evenly distributed with sprinkler holes along the length direction.

[0060] During the tree planting process using this integrated device, the sand-pushing drive mechanism drives the sand-pushing plate 22 to push the sand outward, and the roots of the sapling fall into the sand pit formed by the sand-pushing. After the roots of the sapling fall into the sand, the irrigation device 5 sprays water on the roots of the sapling and the surrounding sand. After the watering is completed, the sand-pushing shovel 31 pushes the sand to cover the roots of the sapling and the surrounding sand.

[0061] In this embodiment, by setting up an irrigation device on the integrated device, the output end of the water spraying pipe of the irrigation device is arranged around the movable insertion tube. After the seedling roots are placed in the sand pit, the sweeping pipe sprays water onto the roots and surrounding sand, which improves the accuracy of water spraying and directly irrigates the roots that need the most water. After spraying water, the sand shovel pushes sand to cover the roots, preventing the moist sand from being exposed to the air and evaporating quickly. With a limited amount of water, this method helps to improve irrigation efficiency, save the amount of water used per seedling, and keep the area around the roots moist for a longer period of time, thereby improving the survival rate of the seedlings.

[0062] like Figure 6 and Figure 7As shown, in a preferred embodiment, the bottom of the movable insertion tube 21 is configured as a slanted tip structure 23, the sand-removing plate 22 is hinged on the slanted surface of the slanted tip structure 23 and its lower end is engaged with the vertical channel. The sand-removing driving mechanism includes a reel 24 that is driven and connected to the winding motor 25. The pull rope 26 wound on the reel 24 is connected to the upper end of the sand-removing plate 22. A return spring 27 is provided near the upper end of the movable insertion tube 21 and the sand-removing plate 22 to drive the sand-removing plate 22 to engage with the bottom of the vertical channel.

[0063] In this embodiment, the slanted tip structure facilitates the insertion of the movable insertion tube into the sand, and the sand-pulling plate prevents sand from entering the vertical channel. After the tree root reaches the sand-pulling plate, the sand is pulled outward by the sand-pulling plate to push the tree root to a depth near the bottom of the movable insertion tube and to spread it out into the space after the sand is pulled out. This makes the tree root depth and condition reasonable, which is conducive to improving the survival rate.

[0064] like Figure 8 As shown, in a preferred embodiment, the seedling delivery device 4 includes a seedling storage box 41 slidably mounted on the frame. The bottom of the seedling storage box 41 is provided with a seedling delivery hole 43. The chassis 12 is provided with a delivery drive mechanism that is driven to drive the seedling storage box 41. The seedling storage box 41 is driven to slide by the delivery drive mechanism so that the seedling delivery hole 43 is aligned with the upper end of the vertical channel, so that the seedlings in the seedling storage box 41 are delivered into the vertical channel. In a specific implementation, the seedling storage box is driven to move along the longitudinal guide rail at the top of the frame by a gear and rack mechanism.

[0065] Preferably, the seedling storage box 41 includes multiple compartments 42 arranged longitudinally, each compartment 42 is used for storing a single seedling and each compartment has a seedling insertion hole 43 at the bottom. The delivery drive mechanism is used to drive the seedling storage box 41 to slide longitudinally so that the seedling insertion hole 43 of the compartment 42 moves to be aligned with the upper end of the vertical channel. A top cover plate is slidably provided on the top of the vertical channel and is close to the bottom of the seedling storage box 41. An opening and closing drive mechanism is provided on the frame and is driven to be connected to the top cover plate. When the seedling insertion hole is completely aligned with the vertical channel, the top cover plate is opened to precisely control the seedling delivery time.

[0066] The seedling storage box in this embodiment can orderly send individual seedlings into the vertical channel, and the top cover plate can control the sending time to prevent the seedlings from partially falling into the vertical channel and getting stuck when the seedling hole is not fully aligned with the vertical channel. This improves the accuracy of seedling delivery time and facilitates the orderly control of the entire tree planting process.

[0067] Based on the above embodiments, the integrated device and method for windbreak and sand fixation using straw pressing and tree planting is a miniaturized and lightweight device that can perform tasks such as digging pits, planting trees, covering soil, and pressing straw to fix sand. It uses a movable tube with a vertical channel inserted into the soil. After the seedling is planted, it pushes the sand outward to keep the seedling roots at a set depth. The workload is small and it is suitable for sandy soil environments with high mobility. A single crank-connecting rod mechanism drives the sand-pushing shovel to cover the tree roots with soil and drives the straw pressing frame to press straw to fix sand at the next planting point. It is easy to operate, has low investment cost and low operating energy consumption, and is suitable for small-scale tree planting operations.

[0068] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention. The above drawings and specific embodiments are for illustrative purposes only, and this invention is not limited thereto. Minor modifications to this invention within the inventive spirit and scope defined by the claims of this invention all fall within the protection scope of this invention.

Claims

1. An integrated device for windbreak and sand fixation combining straw pressing and tree planting, characterized in that: It includes a liftable frame (1), a tree planting device (2), a straw pressing and sand pushing device, and a seedling delivery device (4). The liftable frame (1) includes a scissor frame (11), a chassis (12) and a drive wheel (13). The chassis (12) is located on the top of the scissor frame (11), and the drive wheel (13) is located on the bottom of the scissor frame (11). The tree planting device (2) includes a movable insertion tube (21) and a sand-removing plate (22). The movable insertion tube (21) is slidably mounted vertically on the chassis (12). The chassis (12) is provided with an insertion drive mechanism for driving the movable insertion tube (21) to insert into the sand. The movable insertion tube (21) is provided with a vertical channel for the seedling to pass through. The sand-removing plate (22) is movably fastened to the bottom of the vertical channel. The straw pressing and sand pushing device includes a sand pushing shovel (31) and a straw pressing frame (32). The sand pushing shovel (31) is slidably mounted longitudinally below the chassis (12) and is arranged opposite to the lower end of the movable insertion tube (21). The straw pressing frame (32) is hinged to the front end of the chassis (12). The seedling delivery device (4) is set above the movable insertion tube (21) and is used to deliver a single seedling to the upper end of the vertical channel of the insertion tube; The scissor lift frame (11) includes a first frame and a second frame connected by a transverse intermediate hinge shaft. The upper ends of the first frame and the second frame are slidably connected by a longitudinal guide rod (14). The first frame and the second frame are provided with a centering lifting drive mechanism. The centering lifting drive mechanism includes a double helical screw (15), a left-hand nut (16), a right-hand nut (17), and a lifting motor (18). The left-hand nut (16) is hinged to the upper end of the first frame, and the right-hand nut (17) is hinged to the upper end of the second frame. The double helical screw (15) is arranged longitudinally on the chassis (12) and its two ends are respectively engaged with the left-hand nut (16) and the right-hand nut (17). The lifting motor (18) is driven by the double helical screw (15). The bottom of the movable insertion tube (21) is configured as a slanted tip structure (23). The sand-pulling plate (22) is hinged on the slanted surface of the slanted tip structure (23) and its lower end is engaged with the vertical channel. The sand-pulling drive mechanism includes a reel (24) connected to a winding motor (25). The pull rope (26) wound on the reel (24) is connected to the upper end of the sand-pulling plate (22). A return spring (27) is provided near the upper end of the movable insertion tube (21) and the sand-pulling plate (22) to drive the sand-pulling plate (22) to engage with the bottom of the vertical channel. The chassis (12) is provided with a composite drive mechanism that is driven and connected to the sand-pushing shovel (31) and the straw-pressing frame (32). The mechanism includes a crank (33) mounted on the chassis (12) and driven and connected to the drive motor (34). The crank (33) is connected to the longitudinal push rod (37) of the sand-pushing shovel (31) via a first connecting rod (35) and to the straw-pressing frame (32) via a second connecting rod (36). The upper end of the straw-pressing frame (32) is hinged to the chassis (12) via a support frame (38) and the lower end is hinged to the chassis (12) via an auxiliary support rod (39). The hinge point between the support frame (38) and the chassis and the hinge point between the auxiliary support rod (39) and the chassis are the same. The straw-pressing action of the straw-pressing frame (32) and the sand-pushing action of the sand-pushing shovel (31) are driven intermittently by the crank (33).

2. The integrated device for windbreak and sand fixation using straw pressing and tree planting according to claim 1, characterized in that: The seedling delivery device (4) includes a seedling storage box (41) that slides longitudinally on the frame. The bottom of the seedling storage box (41) is provided with a seedling delivery hole (43). The chassis (12) is provided with a delivery drive mechanism that is driven to connect with the seedling storage box (41). The seedling storage box (41) is driven to slide by the delivery drive mechanism so that the seedling delivery hole (43) is aligned with the upper end of the vertical channel.

3. The integrated device for windbreak and sand fixation using straw pressing and tree planting according to claim 2, characterized in that: The seedling storage box (41) includes multiple compartments (42) arranged along the longitudinal direction. Each compartment (42) is used for storing a single seedling and has a seedling insertion hole (43) at the bottom. The delivery drive mechanism is used to drive the seedling storage box (41) to slide longitudinally so that the seedling insertion hole (43) of the compartment (42) moves to be aligned with the upper end of the vertical channel.

4. The integrated device for windbreak and sand fixation using straw pressing and tree planting according to claim 3, characterized in that: The top of the vertical channel is slidably fitted with a top cover plate that is close to the bottom of the seedling storage box (41), and the frame is provided with an opening and closing drive mechanism that is driven to connect with the top cover plate.

5. The integrated device for windbreak and sand fixation using straw pressing and tree planting according to any one of claims 1 to 4, characterized in that: The integrated device also includes an irrigation device (5) mounted on a chassis (12). The irrigation device (5) includes a sprinkler pipe (52) connected to a water storage tank (51) via a water pump (53). The front end of the sprinkler pipe (52) is radially wound around the outer periphery of the movable insertion tube (21), and the bottom is evenly distributed with sprinkler holes along the length direction.

6. A method for pressing wheat straw and planting trees for windbreak and sand fixation, used in the integrated device for pressing wheat straw and planting trees for windbreak and sand fixation according to any one of claims 1 to 5, characterized in that, Including the following steps: S10. When the integrated device travels to the nth planting point, during the planting process at the (n-1)th planting point, the straw pressing frame (32) presses the straw on the surface of the sand at the nth planting point into the sand. S20. The liftable frame (1) drives the chassis (12) to lower to a low position. When the sand-removing plate (22) is fastened to the bottom of the vertical channel, the insertion drive mechanism drives the lower end of the movable tube (21) to be inserted into the sand at the nth planting point. S30. The seedling delivery device (4) delivers seedlings to the upper end of the vertical channel, and the seedlings fall down along the vertical channel onto the sand-removing plate (22); S40. The sand-pushing driving mechanism drives the sand-pushing plate (22) to push the sand outward, and the roots of the seedling fall into the sand pit formed by the sand-pushing. S50. The crank (33) drives the sand-pushing shovel (31) to move longitudinally through the first connecting rod (35) to push the sand to bury the tree roots, and drives the straw-pressing frame (32) to swing through the second connecting rod (36) to press the straw on the surface of the sand at the (n+1)th planting point into the sand. S60. The insertion drive mechanism drives the movable insertion tube (21) to rise and leave the sand, and the liftable frame (1) drives the chassis (12) to rise to a high position, and the movable insertion tube (21) rises further and leaves the seedling; S70. While keeping the chassis (12) in a high position, the integrated device moves to the (n+1)th planting point and repeats the above steps to plant trees at the (n+1)th planting point and press wheat straw into the (n+2)th planting point.

7. The method for windbreak and sand fixation using straw pressing and tree planting according to claim 6, characterized in that, Step S40 also includes: after the seedling roots are buried in sand, the irrigation device (5) sprays water on the seedling roots and the surrounding sand. After the water spraying is completed, the sand pusher (31) pushes sand to cover the seedling roots and the surrounding sand.

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