Liquid injection device and method for saline-alkali soil improvement

Abstract

The application relates to the technical field of saline-alkali soil improvement, in particular to a liquid injection device and method for saline-alkali soil improvement, which comprises a mobile vehicle body, mobile wheels are arranged at the two ends of the mobile vehicle body through wheel shafts, a liquid storage tank is arranged at the upper end of the mobile vehicle body, a liquid supply pipe is arranged at the lower end of the side wall of the liquid storage tank and is communicated with the inside of the liquid storage tank, a liquid supply branch pipe is connected to the end of the liquid supply pipe away from the liquid storage tank, the lower end of the liquid supply branch pipe is fixed to the mobile vehicle body, a connecting cross pipe is connected to the lower end of the liquid supply branch pipe, a plurality of liquid injection nozzles are uniformly arranged at the lower end of the connecting cross pipe, and a soil digging device is arranged at the middle of the mobile vehicle body; the mobile vehicle body can be flexibly driven in the saline-alkali soil through the mobile wheels, the supporting plate is turned down and dragged when improvement is needed, one end of the mobile vehicle body can be lifted, the sliding block is slid downward at this time, the soil digging bucket is located at the lower end of the mobile vehicle body, and soil digging can be realized.

Description

Technical Field

[0001] This application relates to the technical field of saline-alkali land improvement, and in particular to a liquid injection device and method for saline-alkali land improvement. Background Technology

[0002] Saline-alkali land improvement, also known as alkali control or alkali improvement, refers to the transformation and utilization of saline soil, alkaline soil, and saline-alkali land. The fundamental cause of saline-alkali soil formation is poor water conditions, so in the initial stage of improvement, the focus should be on improving soil moisture. Traditional improvement methods generally involve several steps: first, draining and leaching salts to reduce soil salinity; then, planting salt-tolerant plants to enrich the soil; and finally, planting crops.

[0003] To quickly reduce surface salinity for cultivation, soil properties are adjusted by injecting soil amendment solution, as illustrated in CN119183717B, a method and apparatus for improving and treating saline-alkali land. This prior art involves setting up a deep tillage section and a pesticide application section on the frame. The tilling component is adjusted to a suitable position via the extension and retraction of hydraulic rods. During the movement of the tractor-trailer, the tilling component is inserted into the soil to turn it over. A motor drives the rotating pipe and the feeding assembly to rotate. The amendment placed inside the hopper passes through the feed trough and retaining ring, finally flowing out from the end of the feeding assembly. The rotating feeding assembly inserts into the soil, guiding the flowing amendment deep into the soil to act, ensuring sufficient contact between the amendment and the salinity deep within the soil, thus improving the improvement effect.

[0004] However, the existing technologies mentioned above still have some drawbacks when it comes to improving saline-alkali land: 1. In the existing technologies mentioned above, when the tractor is driving the frame through the bracket, the soil turning component is inserted into the soil to turn over the soil so that the soil conditioner can enter the soil. However, the soil conditioner still stays on the soil surface and is very easy to volatilize when the temperature is high, which wastes the soil conditioner and affects the improvement effect.

[0005] 2. The above-mentioned prior art uses a motor to drive the rotating tube and the plug-in feeding assembly to rotate. The modifier placed inside the material box finally flows out from the end of the plug-in feeding assembly. The rotating plug-in feeding assembly is inserted into the soil, guiding the flowing modifier into the depth of the soil to work. However, when the plug-in feeding assembly is inserted into the soil, the soil may enter the feeding plate and cause blockage, affecting the output of the modifier.

[0006] Based on this, and given the above viewpoints, there is still room for improvement in existing technologies for improving saline-alkali land. Summary of the Invention

[0007] To solve the above-mentioned technical problems, this application provides a liquid injection device and method for improving saline-alkali land, adopting the following technical solution: In a first aspect, the present invention provides a liquid injection device for improving saline-alkali land, comprising a mobile vehicle body, with movable wheels mounted on both ends of the mobile vehicle body via axles, a liquid storage tank disposed on the upper end of the mobile vehicle body, a liquid supply pipe disposed on the lower end of the side wall of the liquid storage tank, the liquid supply pipe communicating with the interior of the liquid storage tank, a liquid supply branch pipe connected to the end of the liquid supply pipe away from the liquid storage tank, the lower end of the liquid supply branch pipe being fixed to the mobile vehicle body, a connecting horizontal pipe connected to the lower end of the liquid supply branch pipe, a plurality of liquid injection nozzles being evenly disposed on the lower end of the connecting horizontal pipe, and a digging device disposed in the middle of the mobile vehicle body.

[0008] Preferably, the excavating device includes sliding holes at both ends of the mobile vehicle body, with a mounting slider slidably connected in the sliding holes. A connecting block is provided at the lower end of the mounting slider, and a rotating shaft is rotatably mounted between the two connecting blocks. The rotating shaft is located on one side of the connecting horizontal pipe. A drive motor is installed on the side end of the connecting block, and the output end of the drive motor is connected to the rotating shaft. Excavating buckets are evenly and alternately arranged on the side end of the rotating shaft, and a plurality of soil-breaking teeth are provided at the end of the excavating bucket away from the rotating shaft.

[0009] Preferably, a lifting device is provided at one end of the mobile vehicle body. The lifting device includes mounting blocks symmetrically arranged at the end of the mobile vehicle body away from the connecting horizontal pipe. A support plate is hinged together between the mounting blocks. A plurality of soil-shoveling cones are evenly arranged at the end of the support plate away from the mounting blocks. A soil-retaining plate is provided at the upper end of the support plate.

[0010] Preferably, the mobile vehicle body is provided with pressing devices on both sides. The pressing device includes a return spring provided at the lower end of the mounting slider, and the lower end of the return spring is connected to the bottom end of the sliding hole. Sliding pins are respectively provided on the opposite sides of the two mounting sliders.

[0011] Preferably, the pressing device further includes sliding plates slidably disposed on both sides of the mobile vehicle body. The sliding plates are provided with guide holes that are inclined downwards away from the mounting block, and the sliding pin slides in the guide holes. The ends of the two sliding plates facing the mounting block are connected to a sliding frame. The end of the mobile vehicle body facing the mounting block is provided with a support block, and the upper end of the support block is slidably connected to the lower end of the sliding frame.

[0012] Preferably, the upper end of the mobile vehicle body is provided with a locking element, the locking element including a connecting sliding hole opened at the upper end of the mobile vehicle body, a limit frame is slidably connected to the connecting sliding hole, and the side end of the limit frame abuts against the side end of the sliding plate.

[0013] Preferably, a traction block is provided at the end of the sliding frame away from the sliding plate, and a connecting hole is provided on the traction block and the retaining plate respectively, and a fixing pin is provided in both connecting holes.

[0014] Preferably, a soil collection device is provided between the connecting blocks. The soil collection device includes a connecting plate provided between the connecting blocks. A plurality of collection grooves are evenly provided on the upper end of the connecting plate, and the collection grooves correspond to the positions of the excavation buckets in the same plane.

[0015] Preferably, the soil collection device further includes a sliding frame slidably disposed on the upper end of the collection trough. The bottom of the sliding frame is provided with an inclined surface that is inclined downward away from the direction of the excavation bucket. A bulldozer is provided at the lower end of the side of the sliding frame away from the excavation bucket. A connecting spring is provided between the bulldozer and the side end of the collection trough.

[0016] Preferably, a conveying device is provided on the side of the connecting plate away from the rotating shaft. The conveying device includes mounting guide plates respectively disposed on the side of the connecting plate away from the rotating shaft, and the mounting guide plates are inclined upward in the direction away from the rotating shaft. Conveying rollers are respectively mounted on both ends of the two mounting guide plates through roller shafts, and the two conveying rollers are driven by a transmission belt.

[0017] Secondly, the present invention also provides a liquid injection method for improving saline-alkali land, the liquid injection method comprising the following steps: S1: Move the mobile vehicle to the saline-alkali land, remove the fixing pin to lower the support plate, and move the mobile vehicle by connecting the towing block to the tractor. S2: During the movement of the mobile vehicle, the support plate is inserted into the ground, which raises the mobile vehicle. The sliding frame continues to slide, moving the excavator bucket downwards. S3: Retract the support plate, start the drive motor, and make the excavator bucket dig the saline-alkali land. The sliding frame pushes the soil in the excavator bucket onto the transmission belt. S4: As the moving vehicle moves, the injection nozzles spray the improved liquid from the storage tank onto the ground, and then the soil on the conveyor belt covers it.

[0018] In summary, this application includes at least one of the following beneficial technical effects: 1. This invention enables the vehicle to move flexibly in saline-alkali land via the movable wheels. When improvements are needed, the support plate can be flipped down and the movable vehicle body can be dragged to lift one end of the movable vehicle body. At this time, the mounting slider can be slid down so that the digging bucket is located at the lower end of the movable vehicle body for digging.

[0019] 2. This invention starts the drive motor, rotates the shaft, and digs the soil in the saline-alkali land to turn over the surface soil and expose the soil inside. The improvement liquid in the supply tank is then injected into the soil through the injection nozzle, which can improve the soil deep inside.

[0020] 3. In this invention, when the moving vehicle is in motion, the drive belt and the crushing roller rotate in opposite directions. The crushing roller breaks up the soil on the drive belt and distributes it evenly. Then the soil on the drive belt falls off and covers the soil surface after the amendment liquid is injected, reducing the volatilization of the amendment liquid and improving the amendment effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the excavation device of the present invention.

[0023] Figure 3 This is a schematic diagram of the lifting device of the present invention.

[0024] Figure 4 This is a schematic diagram of the pressing device of the present invention.

[0025] Figure 5 This is a schematic diagram of the locking element of the present invention.

[0026] Figure 6 This is a schematic diagram of the structure between the traction block, connecting hole, and fixing pin of the present invention.

[0027] Figure 7 This is a schematic diagram of the soil collection device of the present invention.

[0028] Figure 8 This is a schematic diagram of the conveying device of the present invention.

[0029] Figure 9 This is a schematic diagram of the structure of the crushing component of the present invention.

[0030] Figure 10 This is a schematic diagram of the structure of the transmission element of the present invention.

[0031] Explanation of reference numerals in the attached drawings: 11. Moving vehicle body; 12. Axle; 13. Moving wheel; 14. Liquid storage tank; 15. Liquid supply pipe; 16. Liquid supply branch pipe; 17. Connecting horizontal pipe; 18. Injection nozzle; 2. Excavating device; 21. Sliding hole; 22. Mounting slider; 23. Connecting block; 24. Rotating shaft; 25. Drive motor; 26. Excavating bucket; 27. Soil-breaking teeth; 3. Lifting device; 31. Mounting block; 32. Support plate; 33. Soil-shoveling cone; 34. Soil-retaining plate; 4. Pressing device; 41. Return spring; 42. Sliding pin; 43. Sliding plate; 44. Guide hole; 45. Sliding frame; 46. Support block; 47. Locking element Components; 471. Connecting sliding hole; 472. Limiting frame; 51. Traction block; 52. Connecting hole; 53. Fixing pin; 6. Soil collection device; 61. Connecting plate; 62. Collection trough; 63. Sliding frame; 64. Inclined surface; 65. Bulldozer blade; 66. Connecting spring; 7. Conveying device; 71. Mounting guide plate; 72. Drum shaft; 73. Conveying drum; 74. Drive belt; 8. Crushing assembly; 81. Mounting shaft; 82. Crushing roller; 83. Drive gear; 9. Transmission element; 91. Drive sprocket; 92. Sliding groove; 93. Connecting slider; 94. Support spring; 95. Connecting shaft; 96. Tensioning sprocket; 97. Drive chain. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1 to 10 This application will be described in further detail.

[0033] This application discloses an injection device and method for improving saline-alkali land, which can inject the improvement solution into the saline-alkali land and cover the surface of the saline-alkali land with soil to prevent the improvement solution from evaporating. Example 1:

[0034] refer to Figure 1 A liquid injection device for improving saline-alkali land includes a mobile vehicle body 11. Both ends of the mobile vehicle body 11 are equipped with wheels 13 via axles 12 to facilitate movement. A storage tank 14 is located at the upper end of the mobile vehicle body 11 to store the improvement liquid for improving saline-alkali land. A supply pipe 15 is located at the lower end of the side wall of the storage tank 14 and connects to the interior of the storage tank 14. A supply branch pipe 16 is connected to the end of the supply pipe 15 away from the storage tank 14, and the lower end of the supply branch pipe 16 is fixed to the mobile vehicle body 11 to divert the improvement liquid in the supply pipe 15. A connecting horizontal pipe 17 is connected to the lower end of the supply branch pipe 16. Several injection nozzles 18 are evenly arranged at the lower end of the connecting horizontal pipe 17. After the improvement liquid enters the connecting horizontal pipe 17, it is sprayed out through the injection nozzles 18.

[0035] When improving saline-alkali land, the mobile vehicle 11 is driven to the saline-alkali land by the mobile wheels 13. Then, while the tractor is pulling it, the improvement liquid in the storage tank 14 passes through the supply pipe 15, the supply branch pipe 16 and the connecting horizontal pipe 17 in sequence under the action of gravity, and finally is evenly sprayed onto the saline-alkali land through the injection nozzle 18.

[0036] refer to Figure 2 This is a schematic diagram of the excavation device 2 of the present invention. In order to spray the soil amendment liquid into the interior of the saline-alkali soil and prevent the liquid amendment liquid from evaporating and causing poor improvement effect, the excavation device 2 is provided in the middle of the mobile vehicle body 11. The excavation device 2 includes sliding holes 21 opened at both ends of the mobile vehicle body 11. A mounting slider 22 is slidably connected in the sliding holes 21. A connecting block 23 is provided at the lower end of the mounting slider 22. A rotating shaft 24 is rotatably installed between the two connecting blocks 23, and the rotating shaft 24 is located at the connecting horizontal pipe 17. On the side, a slider 22 is slidably installed to adjust the height of the connecting block 23 and the rotating shaft 24 on the moving vehicle body 11. A drive motor 25 is installed on the side end of the connecting block 23, and the output end of the drive motor 25 is connected to the rotating shaft 24. Digging buckets 26 are evenly and alternately arranged on the side end of the rotating shaft 24. The drive motor 25 drives the rotating shaft 24 to rotate, so as to drive the digging buckets 26 to dig the surface soil of the saline-alkali land. Several soil-breaking teeth 27 are provided on the end of the digging bucket 26 away from the rotating shaft 24. The soil-breaking teeth 27 help the digging bucket 26 to dig the soil.

[0037] When the mobile vehicle 11 enters the area to be improved, the sliding block 22 is slid down, which causes the connecting block 23 and the rotating shaft 24 to move downward. At this time, the excavator 26 contacts the surface soil of the saline-alkali land, and then the drive motor 25 is started to drive the rotating shaft 24 to rotate. The excavator 26 digs up the surface soil of the saline-alkali land so that the subsequent improvement liquid can be injected into the soil.

[0038] refer to Figure 3 This is a schematic diagram of the lifting device 3 of the present invention. Before excavating the surface soil, one end of the mobile vehicle body 11 is lifted so that the rotating shaft 24 drives the excavating bucket 26 to move downward. The lifting device 3 is provided at one end of the mobile vehicle body 11. The lifting device 3 includes mounting blocks 31 symmetrically arranged on the end of the mobile vehicle body 11 away from the connecting horizontal pipe 17. The mounting blocks 31 are hinged together with a support plate 32. After the support plate 32 is lowered, it is used to support one end of the mobile vehicle body 11 and lift the mobile vehicle body 11. A plurality of shovel cones 33 are evenly arranged on the end of the support plate 32 away from the mounting blocks 31. After the support plate 32 is lowered, the mobile vehicle body 11 is dragged and the shovel cones 33 shovel into the soil to fix the support plate 32. A retaining plate 34 is provided at the upper end of the support plate 32. When the mobile vehicle body 11 is dragged again, under the action of the retaining plate 34, the soil accumulates on the end of the retaining plate 34 facing the shovel cones 33, thereby causing the support plate 32 to flip downward and lift one end of the mobile vehicle body 11.

[0039] To facilitate the smooth sliding of the mounting slider 22 to the lower end of the sliding hole 21, one end of the moving vehicle body 11 is lifted, the support plate 32 is flipped down, the moving vehicle body 11 is dragged, and the shovel cone 33 is inserted into the soil to fix it. Then, under the action of the retaining plate 34, the support plate 32 is flipped downwards, lifting one end of the moving vehicle body 11. At this time, the mounting slider 22 is slid downwards so that the digging bucket 26 is located at the lower end of the moving vehicle body 11 for digging.

[0040] refer to Figure 4 This is a schematic diagram of the pressing device 4 of the present invention. In order to make the mounting slider 22 slide downward when the moving vehicle body 11 is lifted at one end and then dragged, the pressing device 4 is provided on both sides of the moving vehicle body 11. The pressing device 4 includes a return spring 41 provided at the lower end of the mounting slider 22, and the lower end of the return spring 41 is connected to the bottom end of the sliding hole 21. The return spring 41 keeps the mounting slider 22 in the upper end of the sliding hole 21. Sliding pins 42 are respectively provided on the opposite sides of the two mounting sliders 22. Sliding plates 43 are slidably provided on both sides of the moving vehicle body 11. The upper part has a guide hole 44 that is inclined downward away from the mounting block 31, and the sliding pin 42 slides in the guide hole 44. When the sliding plate 43 is slidable, the mounting slider 22 is driven to slide in the sliding hole 21 under the sliding cooperation of the guide hole 44 and the sliding pin 42. The two sliding plates 43 are connected to the sliding frame 45 at the end facing the mounting block 31. The sliding plate 43 is slidable by pulling the sliding frame 45. The moving vehicle body 11 is provided with a support block 46 at the end facing the mounting block 31, and the upper end of the support block 46 is slidably connected to the lower end of the sliding frame 45. The support block 46 is used to support the sliding frame 45.

[0041] After the support plate 32 lifts one end of the mobile vehicle body 11 and fixes the mobile vehicle body 11, the sliding frame 45 is pulled. Under the sliding cooperation of the guide hole 44 and the sliding pin 42, the mounting slider 22 is driven to slide downward in the sliding hole 21, thereby moving the rotating shaft 24 and the digging bucket 26 to the lower end of the mobile vehicle body 11 to prepare for digging.

[0042] refer to Figure 5This is a schematic diagram of the locking element 47 of the present invention. In order to keep the mounting slider 22 at the lower end of the sliding hole 21 after the mounting slider 22 slides downward in the sliding hole 21, and thus keep the rotating shaft 24 and the digging bucket 26 at the lower end of the moving vehicle for digging, a locking element 47 is provided at the upper end of the moving vehicle body 11. The locking element 47 includes a connecting sliding hole 471 opened at the upper end of the moving vehicle body 11. A limit frame 472 is slidably connected to the connecting sliding hole 471, and the side end of the limit frame 472 abuts against the side end of the sliding plate 43. When the sliding plate 43 slides towards the support plate 32, the top end of the sliding plate 43 is released from the restriction on the lower end of the limit frame 472. The limit frame 472 slides downward under the action of gravity, thereby preventing the sliding plate 43 from sliding away from the support plate 32. At this time, the sliding pin 42 is located at the lower end of the guide hole 44, thereby keeping the rotating shaft 24 and the digging bucket 26 at the lower end of the moving vehicle for digging.

[0043] refer to Figure 6 A traction block 51 is provided at one end of the sliding frame 45 away from the sliding plate 43. When in use, the sliding frame 45 is tractioned by the traction block 51. The traction block 51 and the retaining plate 34 are respectively provided with connection holes 52. A fixing pin 53 is provided in both connection holes 52. When the support plate 32 is not in use, the support plate 32 is flipped up and the fixing pin 53 passes through the connection holes 52 on the traction block 51 and the retaining plate 34 in sequence to lock the support plate 32. The traction block 51 is then pulled to move the moving vehicle 11 to inject the soil amendment liquid to improve the soil. Example 2:

[0044] refer to Figure 7 Based on Embodiment 1, in order to collect the topsoil excavated by the excavator bucket 26 and cover the surface of the saline-alkali land after spraying the amendment solution to prevent the amendment solution from evaporating and being wasted, a soil collection device 6 is provided between the connecting blocks 23. The soil collection device 6 includes a connecting plate 61 provided between the connecting blocks 23. Several collection grooves 62 are evenly opened on the upper end of the connecting plate 61, and the collection grooves 62 correspond to the positions of the excavator bucket 26 on the same plane, so as to send the soil excavated in the excavator bucket 26 into the collection grooves 62. A sliding frame 63 is slidably provided on the upper end of the collection groove 62. 3. One end of the hopper 26 is in contact with the soil inside the hopper 26 so as to scrape the soil inside the hopper 26 into the sliding frame 63. The bottom of the sliding frame 63 is provided with an inclined surface 64 that is inclined downward away from the hopper 26. The soil inside the sliding frame 63 falls into the collection trough 62 along the inclined surface 64. A bulldozer plate 65 is provided at the lower end of the side of the sliding frame 63 away from the hopper 26. The soil in the collection trough 62 is pushed out and collected by the bulldozer plate 65. A connecting spring 66 is provided between the bulldozer plate 65 and the side end of the collection trough 62. After the bulldozer plate 65 pushes out the soil in the collection trough 62, the connecting spring 66 resets the bulldozer plate 65.

[0045] After the excavator bucket 26 excavates the surface soil of the saline-alkali land, the rotating shaft 24 drives the excavator bucket 26 to rotate. When the excavator bucket 26 rotates above the rotating shaft 24, the inside of the excavator bucket 26 comes into contact with one end of the collection trough 62, scraping the soil inside the excavator bucket 26 into the sliding frame 63, and then falling into the collection trough 62 through the inclined plane 64. As the rotating shaft 24 continues to rotate, the excavator bucket 26 pushes the sliding frame 63 to slide away from the rotating shaft 24, thereby pushing the soil on the collection trough 62 out. Then, as the rotating shaft 24 rotates, the excavator bucket 26 is positioned at the lower end of the sliding frame 63, and the contact between the excavator bucket 26 and the sliding frame 63 is restricted. Under the action of the connecting spring 66, the sliding frame 63 slides towards the rotating shaft 24 until one end of the sliding frame 63 abuts against the rotating shaft 24, so as to collect the soil from the next excavator bucket 26.

[0046] refer to Figure 8 This is a schematic diagram of the conveying device 7 of the present invention. In order to convey the soil pushed out of the collection tank 62 to the surface of the land after the improvement liquid has been injected, so as to cover the improvement liquid, the conveying device 7 is provided on the side of the connecting plate 61 away from the rotating shaft 24. The conveying device 7 includes mounting guide plates 71 respectively disposed on the side of the connecting block 23 away from the rotating shaft 24, and the mounting guide plates 71 are inclined upward in the direction away from the rotating shaft 24, so that the injection nozzle 18 is located below the mounting guide plate 71, so as to cover it after the liquid is injected. The two mounting guide plates 71 are respectively mounted with conveying rollers 73 through roller shafts 72. The two conveying rollers 73 are driven by a transmission belt 74, which drives the roller shaft 72 to rotate, so that the transmission belt 74 conveys the soil pushed out of the collection tank 62 to the end of the mobile vehicle 11 away from the direction of travel of the mobile vehicle 11, so as to cover the surface of the land after the improvement liquid has been sprayed.

[0047] refer to Figure 9 This is a schematic diagram of the structure of the crushing component 8 of the present invention. In order to evenly distribute the soil on the transmission belt 74 and spread it on the soil surface after the improvement liquid is injected, the conveying device 7 also includes a crushing component 8 disposed at the end of the mounting guide plate 71 away from the connecting plate 61. The crushing component 8 includes a mounting shaft 81 rotatably mounted on the end of the mounting guide plate 71 away from the connecting plate 61, and the mounting shaft 81 is located directly above the roller shaft 72 at the end away from the connecting plate 61. A crushing roller 82 is mounted on the mounting shaft 81. The mounting shaft 81 and the roller shaft 72 directly below the mounting shaft 81 are respectively provided with mutually meshing transmission gears 83, which drive the mounting shaft 81 to rotate. Under the action of the transmission gears 83, the crushing roller 82 and the transmission belt 74 rotate in opposite directions, thereby crushing and evenly distributing the soil on the transmission belt 74 so as to evenly cover the soil surface.

[0048] refer to Figure 10This is a schematic diagram of the structure of the transmission element 9 of the present invention. In order to make the transmission belt 74 and the crushing roller 82 rotate when the moving vehicle body 11 moves, a transmission element 9 is provided between the wheel axle 12 away from the support block 46 and the mounting shaft 81. The transmission element 9 includes transmission sprockets 91 installed at both ends of the mounting shaft 81 and at both ends of the wheel axle 12 directly below the mounting shaft 81. Sliding grooves 92 are respectively opened on the side ends of the two mounting guide plates 71. A connecting slider 93 is slidably arranged in the sliding groove 92. A support spring 94 is connected to one end of the connecting slider 93 and the sliding groove 92. A tension sprocket 96 is rotatably installed on the connecting slider 93 through the connecting shaft 95. The tension sprocket 96 and the transmission sprocket 91 are located in the same plane. A transmission chain 97 is connected between the transmission sprocket 91 and the tension sprocket 96. When the mounting guide plate 71 moves up and down with the connecting block 23, the tension sprocket 96 keeps the transmission chain 97 in a meshing state with the transmission sprocket 91 under the action of the support spring 94.

[0049] When the moving vehicle 11 moves, the moving wheel 13 and the axle 12 rotate, which in turn causes the mounting shaft 81 to rotate under the transmission of the transmission sprocket 91 and the transmission chain 97, and under the meshing of the transmission gear 83, drives the crushing roller 82 and the transmission belt 74 to rotate.

[0050] Furthermore, the present invention also provides a liquid injection method for improving saline-alkali land, the liquid injection method comprising the following steps: S1: When improving saline-alkali land, the mobile vehicle 11 is moved to the saline-alkali land by the mobile wheels 13, the fixing pin 53 is removed to lower the support plate 32, and the mobile vehicle 11 is pulled by the traction block 51 connected to the tractor.

[0051] S2: During the movement of the mobile vehicle body 11, the support plate 32 is inserted into the ground to fix the shovel cone 33. Then, under the action of the retaining plate 34, the support plate 32 flips downward, lifting one end of the mobile vehicle body 11. The sliding frame 45 is pulled further. Under the sliding cooperation of the guide hole 44 and the sliding pin 42, the mounting slider 22 is driven to slide downward in the sliding hole 21, thereby moving the rotating shaft 24 and the digging bucket 26 to the lower end of the mobile vehicle body 11 to prepare for digging. The limiting frame 472 locks them by limiting the sliding plate 43. S3: Retract the support plate 32. At this time, the excavator bucket 26 contacts the ground. Its own weight provides the downward pressure for excavation. Start the drive motor 25. The excavator bucket 26 excavates the saline-alkali land through the rotating shaft 24. The sliding frame 63 scrapes the soil out of the excavator bucket 26 and pushes the soil in the collection trough 62 onto the transmission belt 74 through the pusher plate 65 at the lower end of the sliding frame 63. S4: By pulling the traction block 51, the moving vehicle 11 is moved forward. Under the drive of the transmission sprocket 91, the transmission belt 74 transports the soil to the end of the moving vehicle 11 opposite to the direction of travel. At the same time, under the meshing of the transmission gear 83, the crushing roller 82 crushes the soil on the transmission belt 74 and distributes it evenly. The injection nozzle 18 sprays the improvement liquid in the storage tank 14 onto the ground, and then the soil on the transmission belt 74 is transported to cover it.

[0052] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A liquid injection device for improving saline-alkali land, comprising a mobile vehicle body (11), wherein both ends of the mobile vehicle body (11) are respectively equipped with mobile wheels (13) via axles (12), and a liquid storage tank (14) is provided at the upper end of the mobile vehicle body (11), characterized in that: A liquid supply pipe (15) is provided at the lower end of the side wall of the liquid storage tank (14), and the liquid supply pipe (15) is connected to the inside of the liquid storage tank (14). The end of the liquid supply pipe (15) away from the liquid storage tank (14) is connected to a liquid supply branch pipe (16), and the lower end of the liquid supply branch pipe (16) is fixed on the mobile vehicle body (11). The lower end of the liquid supply branch pipe (16) is connected to a connecting horizontal pipe (17). Several liquid injection nozzles (18) are evenly arranged at the lower end of the connecting horizontal pipe (17). A digging device (2) is provided in the middle of the mobile vehicle body (11). The excavating device (2) includes sliding holes (21) at both ends of a mobile vehicle body (11). A mounting block (22) is slidably connected in the sliding hole (21). A connecting block (23) is provided at the lower end of the mounting block (22). A rotating shaft (24) is rotatably installed between the two connecting blocks (23). The rotating shaft (24) is located on one side of the connecting horizontal pipe (17). A drive motor (25) is installed on the side end of the connecting block (23). The output end of the drive motor (25) is connected to the rotating shaft (24). Excavating buckets (26) are evenly and alternately arranged on the side end of the rotating shaft (24). A number of soil-breaking teeth (27) are provided at the end of the excavating bucket (26) away from the rotating shaft (24). The mobile vehicle body (11) is provided with a lifting device (3) at one end. The lifting device (3) includes mounting blocks (31) symmetrically arranged on the mobile vehicle body (11) away from the end of the connecting horizontal pipe (17). The mounting blocks (31) are hinged together with a support plate (32). A plurality of soil-shoveling cones (33) are evenly arranged on the end of the support plate (32) away from the mounting blocks (31). A retaining plate (34) is provided on the upper end of the support plate (32). A soil collection device (6) is provided between the connecting blocks (23). The soil collection device (6) includes a connecting plate (61) provided between the connecting blocks (23). Several collection grooves (62) are evenly opened on the upper end of the connecting plate (61), and the collection grooves (62) correspond to the positions of the digging buckets (26) in the same plane. The soil collection device (6) further includes a sliding frame (63) slidably disposed on the upper end of the collection trough (62). The bottom of the sliding frame (63) is provided with an inclined surface (64) that is inclined downward away from the direction of the excavation bucket (26). A bulldozer plate (65) is provided on the lower end of the side of the sliding frame (63) away from the excavation bucket (26). A connecting spring (66) is provided between the bulldozer plate (65) and the side end of the collection trough (62).

2. The liquid injection device for improving saline-alkali land according to claim 1, characterized in that: The mobile vehicle body (11) is provided with pressing devices (4) on both sides. The pressing device (4) includes a reset spring (41) provided at the lower end of the mounting slider (22), and the lower end of the reset spring (41) is connected to the bottom end of the sliding hole (21). Sliding pins (42) are respectively provided on the opposite sides of the two mounting sliders (22).

3. The liquid injection device for improving saline-alkali land according to claim 2, characterized in that: The pressing device (4) further includes sliding plates (43) that are slidably disposed on both sides of the moving vehicle body (11). The sliding plates (43) are provided with guide holes (44) that are inclined downward away from the mounting block (31), and the sliding pin (42) slides in the guide holes (44). The two sliding plates (43) are connected to a sliding frame (45) at the end facing the mounting block (31). The moving vehicle body (11) is provided with a support block (46) at the end facing the mounting block (31), and the upper end of the support block (46) is slidably connected to the lower end of the sliding frame (45).

4. The liquid injection device for improving saline-alkali land according to claim 3, characterized in that: The upper end of the mobile vehicle body (11) is provided with a locking element (47). The locking element (47) includes a connecting sliding hole (471) opened at the upper end of the mobile vehicle body (11). A limit frame (472) is slidably connected on the connecting sliding hole (471), and the side end of the limit frame (472) abuts against the side end of the sliding plate (43).

5. The liquid injection device for improving saline-alkali land according to claim 4, characterized in that: The sliding frame (45) is provided with a traction block (51) at one end away from the sliding plate (43). The traction block (51) and the retaining plate (34) are respectively provided with connecting holes (52), and a fixing pin (53) is provided in both connecting holes (52).

6. The injection device for improving saline-alkali land according to claim 5, characterized in that: A conveying device (7) is provided on the side of the connecting plate (61) away from the rotating shaft (24). The conveying device (7) includes mounting guide plates (71) respectively disposed on the side of the connecting block (23) away from the rotating shaft (24). The mounting guide plates (71) are inclined upward in the direction away from the rotating shaft (24). Conveying rollers (73) are respectively mounted on the two ends of the mounting guide plates (71) through roller shafts (72). The two conveying rollers (73) are driven by a transmission belt (74).

7. A method for injecting liquid to improve saline-alkali land, comprising an injection device for improving saline-alkali land according to claim 6, characterized in that: S1: Move the mobile vehicle (11) to the saline-alkali land, remove the fixing pin (53) to lower the support plate (32), and move the mobile vehicle (11) by connecting the traction block (51) to the tractor. S2: During the movement of the mobile vehicle (11), the support plate (32) is inserted into the ground, causing the mobile vehicle (11) to be lifted up. The sliding frame (45) continues to slide, moving the excavator bucket (26) downward. S3: Retract the support plate (32), start the drive motor (25), and make the digging bucket (26) dig the saline-alkali land. The sliding frame (63) pushes the soil in the digging bucket (26) onto the transmission belt (74). S4: While the moving vehicle (11) is moving, the injection nozzle (18) sprays the improved liquid in the storage tank (14) onto the ground, and then the soil on the transmission belt (74) covers it.

Images