A soil salinization treatment protection blanket laying device

Abstract

This invention discloses a device for laying protective blankets to combat soil salinization, comprising a frame, a ratchet assembly, and nails. From front to back, a front pressing wheel, a transmission wheel, and a rear pressing wheel are arranged sequentially below the frame. From front to back, a protective blanket support frame, a nail-planting mechanism, and a nail-feeding mechanism are arranged sequentially on the frame. The protective blanket support frame holds the protective blanket. The nail-planting mechanism includes a track disc, a track disc support frame, a track disc shaft, a nail-planting hammer, and a nail-storing cup. The nail-feeding mechanism includes nail-feeding limiting barriers, a nail-storing platform, a nail-pushing rod, a traction rope, and a rope-winding pull rod. Two nail-feeding limiting barriers are fixed to the frame at intervals. The nail-storing platform is located between the two nail-feeding limiting barriers, thus forming a nail-feeding trajectory between the nail-storing platform and the nail-feeding limiting barriers. Both ends of the nail-pushing rod are equipped with winding wheels. One end of the traction rope is fixed to the winding wheel, and the other end is fixed to the rope-winding pull rod. One end of the rope-winding pull rod is equipped with a power output gear, which meshes with the ratchet assembly.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery, specifically relating to a device for laying protective blankets to combat soil salinization. Background Technology

[0002] Soil salinization is the process by which salts from the subsoil or groundwater rise to the surface via capillary action, and then accumulate in the topsoil after the water evaporates. China has a wide distribution of saline soils, covering a large area and exhibiting diverse types.

[0003] Soil salinization is a major challenge facing Chinese agriculture, severely restricting its development. Current methods for managing saline-alkali land can be broadly categorized into four types: water conservancy improvement, agricultural improvement, biological improvement, and chemical improvement. While existing methods and research findings address saline-alkali soil management from different perspectives, they also have limitations. For example, water conservancy measures are not conducive to water conservation and require the construction of numerous drainage ditches and supporting facilities. Chemical and biological methods can only be applied to specific types of saline-alkali soil and are prone to secondary soil pollution. One physical improvement scheme, utilizing protective blankets for soil salinization, has shown good applicability in large-scale soil salinization management; however, dedicated installation equipment for this method is currently unavailable in China.

[0004] To restore the productivity of saline-alkali land as much as possible, and to achieve economic and environmental benefits without causing secondary damage, we need a mechanism capable of smoothly laying protective blankets to achieve the following effects:

[0005] 1) Short action cycle and significant effect.

[0006] 2) It has a wide range of applications and is suitable for various scenarios.

[0007] 3) It can not only change soil salinization in the short term, but also improve the soil structure of the surface layer of saline-alkali land.

[0008] Based on the above objectives, this invention introduces a protective blanket laying mechanism that can utilize capillary action to absorb salt. This mechanism can ensure that while laying the protective blanket, it is nailed onto the blanket at precise and timed intervals as it moves forward. This design not only ensures that the protective blanket is in close contact with the ground to achieve the desired working effect, but also prevents some unexpected situations such as strong winds blowing the protective blanket away, thus ensuring the smooth progress of the protective blanket laying operation. Summary of the Invention

[0009] The purpose of this invention is to provide a device for laying protective blankets for soil salinization control that integrates laying and fixing.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A device for laying protective blankets to combat soil salinization includes a frame, a ratchet assembly, and nails. From front to back, a front pressing wheel, a drive wheel, and a rear pressing wheel are arranged sequentially below the frame. From front to back, a protective blanket support frame, a nail-planting mechanism, and a nail-feeding mechanism are arranged on the frame. The protective blanket support frame holds the protective blanket to be laid. The nail-planting mechanism includes a track disc, a track disc support frame, a track disc shaft, a nail-planting hammer, and a nail-holding cup. Two track discs are fixed to both ends of the track disc shaft, which is fixed to the track disc support frame via bearings. The track disc support frame is fixed to the frame. The track discs and the drive wheel are connected via a side sprocket transmission system to transmit power generated by the drive wheel to the track discs. A portion of the track disc has teeth that mesh with a ratchet in the ratchet assembly. A track groove is provided on the inner end face of the track disc. The nail-planting hammer... The device includes a hammer sleeve and a hammer rod. The hammer rod is located inside the hammer sleeve and has a hammer head at its lower end. The hammer rod has a circular protrusion that passes through the hammer sleeve and is located in the track groove of the track disk, thus causing the hammer rod to perform a vertical reciprocating motion as the track disk rotates. A nail storage cup is located below the nail-planting hammer. The nail-feeding mechanism includes a nail-feeding limit barrier, a nail storage platform, a nail-pushing rod, a traction rope, and a rope-winding pull rod. Two nail-feeding limit barriers are fixed to the frame at intervals. The nail storage platform is located between the two nail-feeding limit barriers, thus forming a nail-feeding track between the nail storage platform and the nail-feeding limit barriers. The nail-pushing rod has winding wheels at both ends, which are located in the gap between the nail storage platform and the nail-feeding limit barriers. One end of the traction rope is fixed to the winding wheel, and the other end is fixed to the rope-winding pull rod. One end of the rope-winding pull rod has a power output gear, which meshes with another ratchet of the ratchet group. The nail is located on the nail storage platform.

[0012] Furthermore, the side sprocket transmission system includes a first side sprocket coaxially arranged on the outer side of the transmission ground wheel and a second side sprocket coaxially arranged on the outer side of the track disc, with the first side sprocket and the second side sprocket on the same side connected by a side transmission chain.

[0013] Furthermore, there are two drive wheels, which are respectively located on both sides of the frame. The two drive wheels are connected by a drive wheel shaft, which is fixed to the frame.

[0014] Furthermore, the hammer sleeve is provided with several elongated holes extending vertically. The two sides of the hammer rod are fixed inside the hammer sleeve by tension springs. The lower end of the hammer sleeve is fixed to the frame. The upper end of the tension spring passes through the elongated holes and is fixed to the hammer rod. The lower end of the tension spring is fixed to the hammer sleeve.

[0015] Furthermore, the staple cup is fixed to the frame, and the staple cup has a notch on the side facing the staple for the staple to pass through. The bottom of the staple cup has a spring-loaded cover, and the staple cup inlet is equipped with a clamping and stabilizing mechanism, which is fixed to the frame.

[0016] Furthermore, the clamping and stabilizing mechanism consists of two clamping and stabilizing frames arranged in an inverted V-shape at the entrance of the staple cup; the cover is movably mounted on the staple cup via a pin and a torsion spring.

[0017] Furthermore, the bottom of the nail storage drawer is equipped with wheels.

[0018] Furthermore, the rope winding pull rod is fixed to the frame by a bushing, and the rope winding pull rod is provided with a spiral winding groove.

[0019] Furthermore, the trajectory groove is composed of arc segments and straight segments. The arc segments gradually contract towards the center of the trajectory disk from the beginning to the end, and the beginning and end of the arc segments are connected by straight segments.

[0020] Furthermore, the nail has a structure that is narrow at both ends and wide in the middle, and the width of the nail is slightly larger than the width of the protective blanket.

[0021] The method of using the above device is as follows:

[0022] (1) Fix the entire protective blanket laying device to the rear of the tractor. The protective blanket needs to be manually installed on the protective blanket support frame. Place the front section of the protective blanket under the front press wheel and manually nail a nail to fix the front section of the protective blanket.

[0023] (2) The tractor starts working, driving the protective blanket laying device forward. The protective blanket unfolds and is pressed tightly against the ground by the front and rear pressure wheels.

[0024] (3) The transmission wheel rotates forward under the action of the frame and the ground. The transmission wheel transmits power to the track disk through the side sprocket transmission system. The track disk starts to rotate. The track disk has gear teeth in a certain arc segment, which intermittently mesh with one of the ratchet groups. The other ratchet in the ratchet group drives the power output gear to rotate intermittently. The power output gear drives the rope pulling rod to pull the nail pusher on the nail storage platform forward, thereby pushing the nails on the nail storage platform forward. The nail at the front end is pushed down and falls into the nail storage cup, waiting for the nail hammer to finish nailing.

[0025] (4) As the track disk rotates, the nail hammer rises along the track groove, and the tension spring on the nail hammer is stretched as the nail hammer rises; when the circular protrusion at the junction of the nail hammer and the track disk reaches the top of the track curve, the nail hammer is released and hammers into the ground under the action of the tension spring, pressing the nail into the soil, thus completing one nail planting; as the track disk continues to rotate, the nail planting mechanism cycles through the nail planting process (that is: the nails are pushed down one by one and hammered down by the nail hammer in sequence).

[0026] (5) When the nails on the nail feeding mechanism are used up, the nail pusher needs to be manually pulled back to its original position and the nails are replenished. Then the work is repeated. The track disk is set with gear teeth in a certain arc segment so that the reverse rotation of the power output gear will not affect the movement of the track disk.

[0027] In use, this invention is suspended and attached to the rear of a tractor. The power required for nailing is transmitted to the appropriate parts via a drive wheel and transmission mechanism. A pressure wheel is equipped at both the front and rear of the frame; the front wheel ensures consistent laying direction of the protective blanket, while the rear wheel provides pressure at the end of the laying process. The drive wheel transmits the generated power to the track disc via a side sprocket. The drive wheel, track disc, and side sprockets are all coaxially connected, ensuring both consistent power transmission and simultaneous nailing operation. A specific section on the outer side of the track disc is equipped with gear teeth, while the rest is unequipped. These teeth mesh with the power input gear of the intermittent transmission ratchet assembly, transmitting power to the ratchet's internal teeth. The ratchet's internal teeth rotate, driving the power output gear to rotate, continuing power transmission. After the section of the track disc with the teeth rotates away, the power output gear does not rotate upon resetting due to the lack of power input. The rope winding lever meshes with the power output gear. Due to the intermittent transmission of the input power, the rope winding lever also rotates intermittently. A traction rope is connected to the rope winding lever, with its other end connected to a nail pusher. As the lever rotates, the traction rope winds into the spiral groove on the lever, pulling the nail pusher forward and pushing the nails arranged on the nail storage tray. After the nail pusher reaches its end, the traction rope on the rope winding lever also reaches its end along with the spiral groove. Afterward, no further rotation of the rope winding lever will cause the traction rope to wind up. The nails pushed down by the nail pusher fall into the nail storage cup and are then hammered down by the nail hammer. After all the nails have been hammered down, the nail pusher needs to be manually pulled back, and the nails rearranged to continue the next cycle.

[0028] Compared to traditional film-laying mechanisms, this design significantly reduces labor input. The numerous modular components ensure orderly operation, improve efficiency, and guarantee smooth transmission. Larger drive wheels with serrated edges on their rims enhance anti-slip performance. Simultaneously, nails are delivered and secured to the protective blanket at precise times and quantities. Two pressure rollers ensure close contact with the soil. The nails are manufactured from biodegradable materials, avoiding heavy metal pollution and adhering to green production principles. Manufacturing costs are low, with a wide variety of raw materials available. The simple structure and convenient operation make it highly effective for improving soil conditions and promoting agricultural development, and it can be widely adopted in saline-alkali areas such as Northwest China.

[0029] The combined use of the mechanism ensures smooth power transmission. The track disc and transmission wheel are coaxially connected to the side sprockets, and the side sprocket drive ensures the orderly and stable operation of subsequent nail conveying and fixing. The design of two pressure wheels and fixing nails ensures close contact between the laid protective blanket and the soil, guaranteeing effective capillary action for salt removal. Furthermore, the mechanism is relatively simple, the nails are made of biodegradable materials, and the suspended connection simplifies operation and reduces labor input. Larger wheels with serrations on the rims improve anti-slip performance and ensure accurate power transmission. This demonstrates strong practicality and economy. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the entire machine of the present invention;

[0031] Figure 2 This is a schematic diagram of the nail feeding mechanism;

[0032] Figure 3 This is a schematic diagram of the ratchet assembly.

[0033] Figure 4 A partial view showing the connection between the track disk and the ratchet assembly;

[0034] Figure 5 This is a schematic diagram of the nail-mounting mechanism;

[0035] Figure 6 This is a partial view of the staple insertion mechanism;

[0036] Figure 7 This is a schematic diagram of the staple cup structure;

[0037] Figure 8 This is a schematic diagram of the structure of a nail hammer;

[0038] Figure 9 This is a structural diagram of a nail;

[0039] Figure 10 This is a schematic diagram of the structure of a spring-loaded lid;

[0040] 1-Frame, 2-Nail, 3-Trajectory disc, 4-Protective blanket, 5-Protective blanket support frame, 6-Front press wheel, 7-Second side sprocket, 8-Side transmission chain, 9-First side sprocket, 10-Transmission ground wheel, 11-Rear press wheel, 12-Nail feeding limit fence, 13-Nail storage drawer, 14-Traction rope, 15-Rope winding pull rod, 16-Nail pusher rod, 17-Power output gear, 18-Ratchet assembly, 19-Rope winding groove, 20-Shaft sleeve, 21-Trajectory groove, 22-Trajectory disc support frame, 23-Gear tooth, 24-Nail storage cup, 25-Nail hammer, 26-Clamping and stabilizing mechanism, 27-Rebound cover, 28-Notch, 29-Hammer rod, 30-Hammer head, 31-Hammer sleeve, 32-Tension spring, 33-Circular protrusion, 34-Pin, 35-Torsion spring. Detailed Implementation

[0041] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0042] Example 1

[0043] A device for laying protective blankets to combat soil salinization, such as Figures 1 to 10As shown, the device includes a frame 1, a ratchet assembly 18, and nails 2. From front to back, the frame 1 has a front pressing wheel 6, a drive wheel 10, and a rear pressing wheel 11 arranged sequentially below it. From front to back, the frame 1 also has a protective blanket support frame 5, a nail-planting mechanism, and a nail-feeding mechanism arranged sequentially. The protective blanket support frame 5 holds the protective blanket 4 to be laid. The nail-planting mechanism includes a track disc 3, a track disc support frame 22, a track disc shaft, a nail-planting hammer 25, and a nail-holding cup 24. Two track discs 3 are fixed to both ends of the track disc shaft, which is fixed by bearings. The track disc support frame 22 is fixed to the frame 1. The track disc 3 and the transmission wheel 10 are connected by a side sprocket transmission system so that the power generated by the transmission wheel 10 can be transmitted to the track disc 3 through the side sprocket transmission system. A portion of the arc of the track disc 3 is provided with a tooth 23 that meshes with a ratchet of the ratchet assembly 18. The inner end face of the track disc 3 is provided with a track groove 21. The nail hammer includes a hammer sleeve 31 and a hammer rod 29. The hammer rod 29 is located inside the hammer sleeve 31 and the lower end of the hammer rod 29 is cylindrical. The hammer head 30 has a circular protrusion 33 at the upper end of the hammer rod 29. The circular protrusion 33 passes through the hammer sleeve 31 and is located in the track groove 21 of the track disk 3, so that the hammer rod 29 can make vertical reciprocating motion as the track disk 3 rotates. The nail storage cup 24 is located below the nail-planting hammer 25. The nail feeding mechanism includes a nail feeding limit gate 12, a nail storage drawer 13, a nail pusher 16, a traction rope 14, and a rope winding pull rod 15. Two nail feeding limit gates 12 are fixed at intervals on the frame 1, and the nail storage drawer 13 is located between the two nail feeding limit gates 12. Thus, a nail feeding trajectory is formed between the nail storage platform 13 and the nail feeding limit fence 12. Both ends of the nail pusher 16 are equipped with winding wheels, which are located in the gap between the nail storage platform 13 and the nail feeding limit fence 12. One end of the traction rope 14 is fixed to the winding wheel, and the other end is fixed to the winding rope pull rod 15. One end of the winding rope pull rod 15 is equipped with a power output gear 17, which meshes with another ratchet of the ratchet group 18. The winding rope pull rod 15 is fixed to the frame through the bushing 20, and the nail 2 is located on the nail storage platform 13.

[0044] In this embodiment, the side sprocket transmission system includes a first side sprocket 9 coaxially arranged on the outer side of the transmission ground wheel 10 and a second side sprocket 7 coaxially arranged on the outer side of the track disk 3. The first side sprocket 9 and the second side sprocket 7 on the same side are connected by a side transmission chain 8.

[0045] In this embodiment, there are two transmission wheels 10, which are respectively located on both sides of the frame 1. The two transmission wheels 10 are connected by a transmission wheel shaft, which is fixed on the frame 1.

[0046] In this embodiment, the hammer sleeve 31 is provided with several elongated holes extending in the vertical direction. The two sides of the hammer rod 29 are fixed inside the hammer sleeve 31 by tension springs 32. The lower end of the hammer sleeve 31 is fixed on the frame 1. The upper end of the tension spring 32 passes through the elongated holes and is fixed on the hammer rod 29. The lower end of the tension spring 32 is fixed on the hammer sleeve 31.

[0047] In this embodiment, the staple cup 24 is fixed on the frame. The staple cup 24 has a notch 28 for the staple to pass through on the side facing the staple. The bottom of the staple cup 24 has a spring-loaded cover 27. The staple cup 24 has a clamping and stabilizing mechanism 26 at the inlet. The clamping and stabilizing mechanism 26 is fixed on the frame 1.

[0048] In this embodiment, the clamping and stabilizing mechanism 26 consists of two clamping and stabilizing frames, which are arranged in an inverted V-shape at the entrance of the staple cup 24; the resilient cover 27 is movably mounted on the staple cup 24 by means of a pin 34 and a torsion spring 35.

[0049] like Figure 3 As shown, the trajectory groove 21 is composed of arc segments and straight segments. The arc segments gradually contract towards the center of the trajectory disk from the beginning to the end. The beginning and end of the arc segments are connected by straight segments.

[0050] In this embodiment, the bottom of the nail storage drawer 13 is equipped with wheels.

[0051] In this embodiment, the rope winding rod 15 is provided with a spiral winding groove 19.

[0052] In this embodiment, the nail 2 has a structure that is narrow at both ends and wide in the middle, with the width of the nail 2 slightly larger than the width of the protective blanket 4. The slightly larger width in the middle of the nail 2 is designed to increase the contact area with the protective blanket 4, which not only stabilizes the protective blanket 4 but also increases its adhesion to the soil. The nail 2 is made of PBAT, which is biodegradable.

[0053] Main working components and working principle of the nail-planting mechanism: The track disc 3 is disc-shaped with a track groove 21 cut into its side for the circular protrusion 33 of the nail-planting hammer to engage with, thereby controlling the movement trajectory of the nail-planting hammer 25. The nail-planting hammer 25 is composed of a hammer sleeve 31, a hammer rod 29, and a tension spring 32. During operation, the hammer rod 29 moves up and down reciprocally within the hammer sleeve 31, and the two ends of the tension spring 32 are connected to the hammer sleeve 31 and the hammer rod 29, respectively.

[0054] In operation, the protective blanket laying device is suspended behind the power traction machine. The protective blanket 4 needs to be manually installed on the protective blanket support frame 5, and the front section of the protective blanket 4 is placed under the front pressing wheel 6. A nail is manually driven in to fix the front section of the protective blanket 4. Driven by the power traction machine, the laying device moves forward, and the protective blanket 4 unfolds accordingly. The front and rear pressing wheels 6 and 11 ensure that the protective blanket 4 is in tight contact with the ground. The transmission wheel 10 rotates forward under the action of the frame 1 and the ground. The transmission wheel 10 has a coaxial sprocket 9 on its outside, which transmits power to the track disk 3 through the side sprocket 9. The nail hammer 25 engages with the track disk 3 through the circular protrusion 33 and rises along the track disk 3 as the track disk 3 rotates. The tension spring 32 on the nail hammer 25 is stretched as the nail hammer 25 rises. When the circular protrusion 33 at the junction of the nail-planting hammer 25 and the track disk 3 reaches the apex of the track curve, the nail-planting hammer 25 is released and hammers into the ground under the tension of the tension spring 32, pressing the nail 2 into the soil, thus completing one nail-planting cycle. As the track disk 3 continues to rotate, the nail-planting mechanism repeats the nail-planting process.

[0055] When the track disk 2 rotates, the circular protrusion 33 of the nail-planting hammer 25, which is tangent to the track, rises through the gear transmission with the ratchet assembly 18. As it continues to rotate, the rising track disappears, and the nail-planting hammer 25, under its own weight and the action of the tension spring 32, quickly hammers down, driving the nail 2 in the nail storage cup 24 to the ground. The track disk 3 has gear teeth 23 in a certain arc segment, which can intermittently mesh with the ratchet assembly 18. The gears of the ratchet assembly 18 can realize the intermittent rotation of the power output gear. At the same time, when the power output gear 17 reverses, it will not affect the movement of the track disk 2. The rope-winding rod 15 pulls the nail-pushing rod 16 on the nail storage platform 13 forward, thereby pushing the nail 2 on the nail storage platform 10 forward. As the nails on the nail storage platform 10 are pushed forward as a whole, the foremost nail is pushed down (at the same time, the second nail is pushed to the position of the original foremost nail, and so on), falling into the nail storage cup 24, waiting for the nail-planting hammer 25 to hammer down and complete the nailing. When the nails on the nail feeding mechanism are used up, the nail pusher 16 needs to be manually pulled back to its original position to replenish the nails, and then the work can be repeated.

[0056] The device moves forward under the traction of the power. The protective blanket 4 will first come into contact with the ground under the pressure of the front pressing wheel 6. As the unit moves forward, the protective blanket 4 will then be completely adhered to the ground under the pressure of the rear pressing wheel 11. The power generated by the movement of the transmission wheel 10 will be transmitted to the track disc 3 through the side sprocket transmission system. At the same time as the protective blanket 4 is laid, the track disc 3 will accurately fix the nails 2 delivered by the nail feeding mechanism onto the protective blanket 4 at a time and in a quantitative manner. The nail feeding mechanism can move relative to the frame 1 in order to complete the process of loading and unloading nails.

[0057] The presence of the ratchet assembly 18 ensures that the mechanism can fix the nails 2 on the protective blanket 4 at regular intervals and in precise quantities. The transmission wheel 10 transmits power to the ratchet assembly 18, and the ratchet assembly 18 and the toothed part on the track disk 3 drive the track disk 3 to work periodically through gear transmission.

[0058] The nail storage and extraction platform 13 can move relative to the nail feeding mechanism fixed to the frame 1 to complete the loading and unloading of nails 2. The traction rope 14 guides the movement of nails 2. The clamping and stabilizing mechanism 13 can prevent relative displacement of nails 2 during falling and nailing, so that nails 2 fall along a predetermined path.

[0059] As the drive wheel 10 rotates, power is transmitted from the drive wheel 10 to the track disk 3 through the side sprocket chain transmission system, thereby driving the track disk 3 to rotate. The hammer rod 29 has a cylindrical hammer head 30 at its lower end, and both sides of the hammer rod 29 are connected to tension springs 32. Simultaneously, the hammer rod 29 is constrained by the hammer sleeve 31, allowing only vertical reciprocating motion. When the rotation of the track disk 3 drives the hammer rod 29 to the highest point of the track near the center of the track disk, the hammer rod 29 is released, and under the tension of the tension springs 32, it strikes the ground, thus completing one nail-planting cycle. As the hammer rod 29 rises along the track on the track disk, the nail-feeding mechanism delivers the next nail 2 to the nail storage cup 24 for the next nail planting.

[0060] In practical applications, the transmission relationship between the track disc and the rope winding rod is as follows:

[0061] Given that the width of nail 2 is L meters; the traction rope 14 wraps around the rope pulling rod 15 one turn, and nail 2 is pushed out by one (that is, the perimeter of the cross section of the spiral rope pulling rod 15 is equal to the forward distance of nail 2, and the forward distance of nail 2 is equal to the width Lm of the stator).

[0062] Process: When a nail 2 is pushed out, the rope winding lever 15 rotates one revolution, and the power output gear 17, coaxially connected to this lever, also rotates one revolution. Taking the transmission ratio between the ratchet on the outer side of the ratchet assembly and the power output gear 17 meshing with it as 0.8, that is, for every revolution of the spiral rope winding lever 15, the ratchet rotates... The ratchet rotates in a circle, meshing with the gear segment on track disk 3. The track disk 3 rotates once, causing the ratchet assembly to rotate. Rotate the power output gear 17 and the rope winding lever 15 one revolution, pull the nail pusher 16 forward a distance L, and push down a nail.

[0063] The nail is L meters wide, and the diameter of the rope-wrapped guy rod is d= rice.

[0064] The transmission relationship between the ground wheel and the track disc is as follows:

[0065] The mechanism travels 5 meters, and the track disk rotates one revolution (i.e., a nail is placed every 5 meters). Taking the sprocket transmission ratio as i=5, this means that for every one revolution of the track disk, the ground wheel rotates five revolutions (the ground wheel and its sprocket are coaxial, and the track disk and its sprocket are coaxial). Let the circumference of the ground wheel be S, 5S=5m, S=1m, then the radius of the ground wheel... = rice.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the specific implementation of the present invention and not to limit it. Those skilled in the art should understand that any equivalent substitutions or obvious modifications made to the implementation of the present invention without changing its performance or use, without departing from the spirit of the present invention, should be covered within the scope of protection claimed by the present invention.

Claims

1. A device for laying protective blankets to combat soil salinization, characterized in that, The device includes a frame, a ratchet assembly, and nails. From front to back, the frame has a front pressure wheel, a drive wheel, and a rear pressure wheel. From front to back, the frame also has a protective blanket support frame, a nail-planting mechanism, and a nail-feeding mechanism. The protective blanket support frame holds the protective blanket to be laid. The nail-planting mechanism includes a track disc, a track disc support frame, a track disc shaft, a nail-planting hammer, and a nail-holding cup. Two track discs are fixed to both ends of the track disc shaft, which is fixed to the track disc support frame via bearings. The track disc support frame is fixed to the frame. The track disc and the drive wheel are connected via a side sprocket transmission system to transmit power from the drive wheel to the track disc. A portion of the track disc has teeth that mesh with a ratchet in the ratchet assembly. The inner end face of the track disc has a track groove. The nail-planting hammer includes a hammer sleeve and a hammer rod. The rod is located inside the hammer sleeve, and the lower end of the hammer rod is equipped with a hammer head. The hammer rod has a circular protrusion, which passes through the hammer sleeve and is located in the track groove of the track disk, so that the hammer rod can make vertical reciprocating motion as the track disk rotates. The nail storage cup is located below the nail hammer. The nail feeding mechanism includes a nail feeding limit fence, a nail storage platform, a nail pusher, a traction rope, and a rope winding pull rod. Two nail feeding limit fences are fixed to the frame at intervals. The nail storage platform is located between the two nail feeding limit fences, so that a nail feeding track is formed between the nail storage platform and the nail feeding limit fence. The two ends of the nail pusher are equipped with winding wheels, which are located in the gap between the nail storage platform and the nail feeding limit fence. One end of the traction rope is fixed to the winding wheel, and the other end is fixed to the rope winding pull rod. One end of the rope winding pull rod is equipped with a power output gear, which meshes with another ratchet of the ratchet group. The nail is located on the nail storage platform.

2. The soil salinization control protective blanket laying device according to claim 1, characterized in that, The side sprocket drive system includes a first side sprocket coaxially arranged on the outside of the drive wheel and a second side sprocket coaxially arranged on the outside of the track disc. The first side sprocket and the second side sprocket on the same side are connected by a side drive chain.

3. The soil salinization control protective blanket laying device according to claim 1, characterized in that, There are two drive wheels, which are respectively located on both sides of the frame. The two drive wheels are connected by a drive wheel axle, which is fixed to the frame.

4. The soil salinization control protective blanket laying device according to claim 1, characterized in that, The hammer sleeve has several elongated holes extending vertically. The two sides of the hammer rod are fixed inside the hammer sleeve by tension springs. The lower end of the hammer sleeve is fixed to the frame. The upper end of the tension spring passes through the elongated holes and is fixed to the hammer rod. The lower end of the tension spring is fixed to the hammer sleeve.

5. The soil salinization control protective blanket laying device according to claim 1, characterized in that, The staple cup is fixed on the frame. The staple cup has a notch on the side facing the staple for the staple to pass through. The bottom of the staple cup has a spring-loaded cover. The staple cup inlet is equipped with a clamping and stabilizing mechanism, which is fixed on the frame.

6. The soil salinization control protective blanket laying device according to claim 5, characterized in that, The clamping and stabilizing mechanism consists of two clamping and stabilizing frames arranged in an inverted V-shape at the entrance of the staple cup; the cover is movably mounted on the staple cup by a pin and a torsion spring.

7. The soil salinization control protective blanket laying device according to claim 1, characterized in that, The bottom of the nail storage drawer is equipped with wheels.

8. The soil salinization control protective blanket laying device according to claim 1, characterized in that, The rope winding pull rod is fixed to the frame by a bushing, and the rope winding pull rod is provided with a spiral winding groove.

9. The soil salinization control protective blanket laying device according to claim 1, characterized in that, The trajectory groove is composed of arc segments and straight segments. The arc segments gradually contract towards the center of the trajectory disk from the beginning to the end. The beginning and end of the arc segments are connected by straight segments.

10. The soil salinization control protective blanket laying device according to claim 1, characterized in that, The nail has a structure that is narrow at both ends and wide in the middle, and the width of the nail is slightly larger than the width of the protective blanket.

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