A remote silent ground rapid freezing and solidifying treatment device for tidal flat areas

Abstract

A remote silent ground rapid freezing and solidifying treatment device for tidal flat areas, belonging to the field of soft ground solidification experimental devices, comprises a projectile and a catapult device for launching the projectile; a liquid nitrogen cavity is arranged in the projectile; a liquid nitrogen outlet is formed in the surface wall of the projectile, and the liquid nitrogen outlet is communicated with the liquid nitrogen cavity; liquid nitrogen is filled in the liquid nitrogen cavity; a baffle is connected at the liquid nitrogen outlet for closing the liquid nitrogen cavity; a tail seat is connected to the projectile, and a pull rope is connected between the tail seat and the baffle; after the tail seat is impacted, the tail seat disengages the baffle from the liquid nitrogen outlet through the pull rope. This device cures the soft ground area by launching the projectile into the soft ground area and using the liquid nitrogen in the projectile, without the need for construction workers or engineering to reach the soft ground site, without noise generation, and with a fast curing speed.

Description

Technical Field

[0001] The present invention relates to the field of soft foundation curing experimental devices, and particularly to a remote silent foundation rapid freezing and curing treatment device for tidal flat areas. Background Art

[0002] The natural water content of soft soil in tidal flat areas is higher than the liquid limit, with a large void ratio, high compressibility, extremely low strength and often in a flowing state, resulting in the inability to form a stable construction platform for this type of roadbed. In order to effectively improve the mechanical properties of soft soil and ensure its bearing capacity, the current existing treatment methods are the drainage preloading method and the replacement method.

[0003] The so-called preloading method is to preload the construction site before or after the completion of the building, so that the foundation soil mass undergoes a certain degree of consolidation and compression, the foundation undergoes pre-settlement, the soil strength is improved, the post-construction settlement of the building is reduced, and at the same time the building is more stable and safe during the construction process. The replacement method is a method of excavating the soft soil within a certain range below the foundation ground surface and then backfilling materials with high strength, low compressibility and no erosion.

[0004] Both of the above two existing methods require construction machinery to be used at the construction site. For swampy tidal flat areas, it is very difficult for both workers and construction machinery to enter, so rapid construction of the construction site cannot be carried out, and the construction period is prolonged.

[0005] In summary, in view of the current dilemmas of the existing technology, it is necessary to propose a new foundation curing treatment device for experiments to provide a theoretical basis for the curing design of soft soil areas such as swampy tidal flats in the future. Summary of the Invention

[0006] In order to overcome the deficiencies in the existing technology, the present invention proposes a remote silent foundation rapid freezing and curing treatment device for tidal flat areas, which solves the technical problem of how to rapidly cure soft soil areas such as swampy tidal flats without using construction machinery.

[0007] In order to achieve the above object, a remote silent foundation rapid freezing and curing treatment device for tidal flat areas of the present invention includes a projectile and a catapult device for launching the projectile;

[0008] A liquid nitrogen chamber is provided in the projectile;

[0009] A liquid nitrogen outlet is opened on the surface wall of the projectile, and the liquid nitrogen outlet is communicated with the liquid nitrogen chamber; liquid nitrogen is filled in the liquid nitrogen chamber; a baffle is connected at the liquid nitrogen outlet for closing the liquid nitrogen chamber;

[0010] A tail seat is connected to the projectile, and a pull rope is connected between the tail seat and the baffle; when the tail seat is impacted, the tail seat disengages the baffle from the liquid nitrogen outlet through the pull rope.

[0011] Furthermore, the launcher also includes an ignition trigger chamber and a device chamber;

[0012] A needle seat is provided in the ignition trigger chamber and fixed on the tailstock; a striker is fixed on the needle seat and is located in the ignition trigger chamber; the ignition trigger chamber is filled with gunpowder, and the end of the striker away from the needle seat contacts the gunpowder, which is used to ignite the gunpowder after the tailstock moves;

[0013] A drive circuit is provided in the device cavity, and the drive circuit includes a battery, a trigger needle and a thermistor connected in series. The thermistor is used to receive the heat generated by the combustion of gunpowder and increase the current in the drive circuit;

[0014] An opening assembly is provided at one end of the launching projectile away from the tail seat, and an opening umbrella assembly for opening the opening assembly is provided in the equipment cavity, and a trigger pin contacts the opening umbrella assembly; the trigger pin causes the opening umbrella assembly to operate by increasing the current, and the opening umbrella assembly is used to open the opening assembly.

[0015] The support assembly is fixed in the soft foundation soil layer to provide a stable environment for releasing liquid nitrogen to the projectile.

[0016] Furthermore, the parachute opening assembly comprises:

[0017] An umbrella handle is fixed in the equipment cavity, a mounting cavity is provided inside the umbrella handle, and the umbrella handle is in the shape of a straight cylinder;

[0018] An umbrella opening button is radially slidably arranged on the surface wall of the umbrella handle, one end of the umbrella opening button extends into the installation cavity, and the other end contacts the trigger pin; a U-shaped ring is fixed to the end of the umbrella opening button extending into the installation cavity, and a guide rod is fixed to the U-shaped ring;

[0019] An inner sleeve is provided in the installation cavity, and the inner sleeve is a straight tube, one end of which is fixed on the inner wall of the installation cavity, and the other end of which extends out of the installation cavity from an end close to the expansion assembly;

[0020] An outer sleeve is sleeved on the inner sleeve, the outer sleeve is a straight tube, and the expansion assembly is arranged on the outer sleeve; a slide groove for the inner sleeve to slide is arranged in the outer sleeve, and a center spring is arranged in the slide groove, and the center spring is in a compressed state, and is used to drive the outer sleeve to move along its axis in a direction away from the installation cavity;

[0021] A buckle is fixed on the cylindrical surface wall of the outer sleeve, and the buckle contacts the guide rod. The guide rod is used to limit the movement of the outer sleeve through the buckle, and is disengaged from the buckle after the umbrella opening button moves.

[0022] The guide rod is connected with a limit assembly for maintaining the buckle position.

[0023] Furthermore, the expansion assembly comprises:

[0024] An upper nesting plate fixed on the end of the outer sleeve away from the installation cavity; a collar sleeved on the outer sleeve, the collar sleeve being relatively slidably arranged on the outer sleeve along the axis of the outer sleeve; two sets of connecting rods symmetrically along the axis of the outer sleeve; a fixed pulley and a movable pulley respectively fixed on the upper nesting plate and the collar sleeve; a pull rope with one end wound around the circumferential outer wall of the fixed pulley and the movable pulley and fixedly connected to the fixed pulley; an elastic pressing sheet is fixed on the other end of the pull rope, and a receiving cavity is arranged in the inner sleeve, and the spring pressing sheet is fixed in the receiving cavity;

[0025] The connecting rod comprises a first supporting rod and a second supporting rod. One end of the first supporting rod is hinged on the upper nest plate; one end of the second supporting rod is hinged on the sliding ring, and the other end is hinged on the middle position of the first supporting rod.

[0026] Furthermore, the guide rod is arranged on the U-shaped ring along the sliding direction of the umbrella opening button, and the guide rod includes a limiting portion and a guiding portion, and the limiting portion is in conflict with the buckle;

[0027] Furthermore, the limit assembly includes a limit spring sleeved on the guide rod, and the length direction of the spring is parallel to the moving direction of the umbrella opening button; a connecting block is fixed on the inner wall of the installation cavity, and the two ends of the spring respectively contact the surface wall of the U-shaped ring facing away from the umbrella opening button and the surface wall of the connecting block.

[0028] The ejection device comprises:

[0029] A base plate fixed on a hard base ground; a support frame is fixed on the base plate; a cylinder is rotatably connected to the support frame, the cylinder is placed obliquely, and the cylinder is in the shape of a straight cylindrical cylinder; an electric valve is fixed on the inner wall of the cylinder; an air storage and boosting chamber and an ammunition chamber are provided inside the cylinder; the electric valve is arranged between the air storage and boosting chamber and the ammunition chamber, and is used to connect or block the air storage and boosting chamber and the ammunition chamber; an air injection nozzle is connected to the air storage and boosting chamber, the air injection nozzle is connected to the air storage and boosting chamber, and the air injection nozzle is connected to an air compressor, and is used to inject air and pressurize the air storage and boosting chamber.

[0030] Beneficial effects: 1. The projectile is launched through the ejection device and lands in the soft foundation area. After the liquid nitrogen flows out, it freezes and solidifies the soil water of the soft foundation to achieve the purpose of silent solidification; at the same time, there is no need for construction personnel or machinery to reach the soft foundation soil layer site.

[0031] 2. It is equipped with a support component to ensure the position of the projectile in the soft foundation soil layer and provide a stable environment for the liquid nitrogen to flow out. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0033] Figure 2 It is a schematic diagram of the experiment of this embodiment;

[0034] Figure 3 It is a schematic diagram of the internal structure of the launched projectile;

[0035] Figure 4 It is Figure 3 an enlarged view of part A in

[0036] Figure 5 It is Figure 4 a sectional view taken along line C-C in

[0037] Figure 6 It is a sectional view of the inner sleeve and the outer sleeve placed at an angle in Figure 4 ;

[0038] Figure 7 It is Figure 3 a schematic diagram of the connection structure of the fixed pulley and the movable pulley placed at an angle in

[0039] 1. Base plate; 2. Support frame; 3. Long shaft; 4. Tripod; 5. Cylinder; 6. Electric valve; 7. Gas storage and pressurization chamber; 8. Ammunition chamber; 9. Pressure sensor; 10. Gas injection nozzle; 11. Liquid nitrogen chamber; 12. Ignition trigger chamber; 13. Equipment chamber; 14. Liquid nitrogen outlet; 15. Flap; 16. Pull rope; 17. Tailstock; 18. Needle base; 19. Firing pin; 20. Gunpowder; 21. Trigger pin; 22. Thermistor; 23. Umbrella handle; 24. Installation chamber; 25. Parachute opening button; 26. U-shaped ring; 27. Guide rod; 271. Limiting part; 272. Linking part; 28. Limiting spring; 29. Connecting block; 30. Inner sleeve; 31. Outer sleeve; 32. Slide groove; 33. Center spring; 34. Snap; 35. Slip ring; 36. Upper nest plate; 37. Fixed pulley; 38. Movable pulley; 39. Steel rope; 40. Accommodation chamber; 41. Spring pressing piece; 42. First support rod; 43. Second support rod. Detailed implementation manners

[0040] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] See Figure 1 and Figure 2 , a remote silent ground rapid freezing and solidifying treatment device for the beach area, mainly used for experiments, is an experimental device, providing a theoretical basis for the realization of related mechanical construction in the future.

[0042] The solidification treatment device mainly includes an ejection device and a projectile. The ejection device is mainly used to remotely eject the projectile to soft foundation areas such as tidal flats, and the projectile solidifies the soft foundation areas such as tidal flats by freezing.

[0043] See Figure 1 , specifically, the ejection device includes a base plate 1, which is placed on the ground of a hard foundation and can be fixed to the ground of the hard foundation by bolts or other means. A support frame 2 is fixed to the upper surface wall of the base plate 1 by welding or other means, and a long shaft 3 is passed through the support frame 2. Both ends of the long shaft 3 in the axial direction thereof respectively penetrate through the two corresponding side walls of the support frame 2. Nuts are respectively threadedly connected to both ends of the long shaft 3, and the two nuts abut against the two surface walls of the corresponding support frame 2. Under the frictional force generated by the abutment between the nuts and the surface wall of the support frame 2, the rotation of the long shaft 3 along its axis is restricted. In this embodiment, the axis of the long shaft 3 faces inwards towards the paper surface.

[0044] It also includes a cylindrical barrel 5 in the shape of a straight cylinder. The barrel 5 is placed obliquely with one end facing the direction of the support frame 2. A connecting bracket is fixed to the end of the barrel 5 facing the support frame 2 by welding or other means, and the connecting bracket is fixed to the circumferential side wall of the long shaft 3 by welding or other means. The whole barrel 5 rotates along the axis of the long shaft 3 to change the height of the end of the barrel 5 away from the connecting bracket; the end of the barrel 5 away from the connecting bracket is higher than the end where the connecting bracket is fixed. The vertical plane where the axis of the barrel 5 is located and the vertical plane where the axis of the long shaft 3 is located are perpendicular to each other. A tripod 4 is provided on the circumferential surface wall of the barrel 5. The tripod 4 is respectively hinged on the circumferential surface wall of the barrel 5, and the three legs of the tripod can rotate respectively. The bottom sides of the three legs abut against the ground of the hard foundation. The tripod is used to provide a supporting force for the middle part of the barrel 5.

[0045] An electric valve 6 is installed on the inner wall of the barrel 5 by bolts or other means. The electric valve 6 divides the original internal cavity of the barrel 5 into two parts along the axis of the barrel 5, and the two parts are respectively an air storage and pressurization chamber 7 and an ammunition chamber 8. The end of the ammunition chamber 8 away from the connecting bracket is open. The electric valve 6 is arranged between the air storage and pressurization chamber 7 and the ammunition chamber 8 and is used to connect or block the air storage and pressurization chamber 7 and the ammunition chamber 8. When the electric valve 6 is opened, the air storage and pressurization chamber 7 and the ammunition chamber 8 are connected; when the electric valve 6 is closed, the air storage and pressurization chamber 7 and the ammunition chamber 8 are not connected. The air storage and pressurization chamber 7 is arranged at a position of the barrel 5 close to the connecting bracket.

[0046] An air pressure sensor 9 is fixed on the circumferential surface wall of the cylinder 5 by means of threads or other methods, and the pressure monitoring unit of the air pressure sensor 9 extends into the gas storage and boosting chamber 7. The display unit of the gas display is outside the cylinder 5, and the gas display is used to monitor and display the gas pressure in the gas storage and boosting chamber 7. A gas injection nozzle 10 is also provided on the circumferential surface wall of the cylinder 5, and the gas injection nozzle 10 is connected to the gas storage and boosting chamber 7. An air compressor is fixed to the gas injection nozzle 10 by means of threads or other methods, and the air compressor is used to inject gas into the gas storage and boosting chamber 7 through the gas injection nozzle 10.

[0047] The process of putting the projectile into the ejection device is: put the projectile into the ammunition chamber 8, and the projectile will move to the position in contact with the electric valve 6 due to its own weight, and the electric valve 6 is in a closed state. Since there is a pressure difference between the air compressor and the gas storage and boosting chamber 7, the air compressor injects gas into the gas storage and boosting chamber 7 through the gas injection nozzle 10. The air pressure sensor 9 monitors the air pressure in the gas storage and boosting chamber 7. After reaching a predetermined threshold, it is opened through the electric valve 6, and the air pressure in the gas boosting chamber pushes the projectile in the ammunition chamber 8 to fly out. In this embodiment, the control method of the electric valve 6 can be that the experimenter observes the value of the air pressure sensor 9 and then manually controls the opening of the electric valve 6. In other embodiments, the controller can also be electrically connected to the air pressure sensor 9 and the electric valve 6, and the controller controls the electric valve 6 to open after the air pressure sensor 9 reaches the threshold.

[0048] See Figure 3 , the projectiles include:

[0049] Projectile, length direction Figure 3 There are three independent chambers inside, namely the liquid nitrogen chamber 11, the ignition trigger chamber 12 and the equipment chamber 13.

[0050] An expansion component is provided at one end of the projectile body along the length direction, which is connected to the structure in the equipment cavity 13. The expansion component is used to be inserted into the soft soil foundation after the projectile lands, and the expansion component is automatically controlled by the equipment in the equipment cavity 13.

[0051] Specifically, two liquid nitrogen outlets 14 are provided on the surface wall of the projectile, and a liquid nitrogen inlet (not shown) is also provided. The liquid nitrogen outlet 14 and the liquid nitrogen inlet are both connected to the liquid nitrogen chamber 11. The liquid nitrogen chamber 11 is filled with liquid nitrogen through the liquid nitrogen inlet. The liquid nitrogen inlet is opened only when liquid nitrogen is injected into the liquid nitrogen chamber 11. After the liquid nitrogen chamber 11 is filled with liquid nitrogen, the liquid nitrogen inlet will be closed. A baffle 15 is respectively fixed on the inner wall of the two liquid nitrogen outlets 14 by welding or other means, and the baffle 15 is used to keep the liquid nitrogen outlet 14 in a normally closed state. A pull rope 16 is fixed on the baffle 15 by welding or other means. There are two pull ropes 16 for the two baffles 15, and one end of the two pull ropes 16 is fixedly connected to the corresponding baffle 15. Refer to Figure 3A tailstock 17 is fixed to the outer wall of the body along the length direction away from the expansion assembly by bonding or other means, and the tailstock 17 is welded or otherwise fixedly connected to the other ends of the two pull ropes 16, and the pull ropes 16 are kept in a taut state. The tailstock 17 and the expansion assembly are respectively located at the two ends of the length direction of the body.

[0052] The overall length of the ignition trigger chamber 12 is set along the length direction of the projectile. A needle seat 18 is provided in the ignition trigger chamber 12. The needle seat 18 is located at one end of the ignition trigger chamber 12 close to the tail seat 17. The needle seat 18 is fixedly connected to the tail seat 17 by welding or other means, and the needle seat 18 is not connected to the inner wall of the ignition trigger chamber 12. A striker 19 is welded or otherwise fixed on the surface wall of the end of the needle seat 18 facing away from the tail seat 17, and the striker 19 is in the ignition trigger chamber 12. The axial direction of the striker 19 is along the length direction of the projectile. The ignition trigger chamber 12 is filled with gunpowder 20, and the gunpowder 20 is filled at one end of the ignition trigger chamber 12 away from the needle seat 18, and the end of the striker 19 away from the needle seat 18 just contacts the gunpowder 20.

[0053] The position of the gunpowder 20 is very close to the equipment cavity 13.

[0054] A driving circuit is provided in the device cavity 13. The driving circuit includes a battery, a trigger pin 21, a thermistor 22 and a wire. The battery, the trigger pin 21 and the thermistor 22 are connected in series through the wire. The trigger pin 21 is made of metal zinc, mainly because the metal zinc has a large thermal expansion coefficient and is easy to expand after being heated. The thermistor 22 is fixed to the inner wall of the device cavity 13 by gluing or other means, and the thermistor 22 is placed at a position closest to the gunpowder 20, so that the heat generated by the combustion of the gunpowder 20 can be directly transferred to the thermistor 22.

[0055] An umbrella handle 23 is also provided in the equipment cavity 13. The umbrella handle 23 is in the shape of a straight cylinder. The umbrella handle 23 is fixed to the inner wall of the equipment cavity 13 by welding or other means. The axial direction of the umbrella handle 23 is along the length direction of the elastic body. An installation cavity 24 is provided inside the umbrella handle 23 along the axial direction of the umbrella handle 23. An umbrella opening button 25 is provided on the circumferential side wall of the umbrella handle 23. The umbrella opening button 25 is cut by a plane perpendicular to the axis of the umbrella handle 23 and is in the shape of an inverted "I" when viewed from the axial direction of the umbrella handle 23. The umbrella opening button 25 is relatively slidably arranged on the umbrella handle 23 along the radial direction of the umbrella handle 23. The umbrella opening button 25 is penetrated on the circumferential surface wall of the umbrella handle 23 in the radial direction. The surface wall of the umbrella handle 23 facing the outside of the installation cavity 24 contacts the aforementioned trigger pin 21. The trigger pin 21 is outside the umbrella handle 23; the other end extends into the installation cavity 24 inside the umbrella handle 23.

[0056] Reference Figure 4 , Figure 5, at one end of the installation cavity 24 where the umbrella-opening button 25 is installed, a U-shaped ring 26 is fixed by welding or other means, and the opening direction of the U-shaped ring 26 faces the umbrella-opening button 25. A guide rod 27 is fixed to the U-shaped ring 26 by welding or other means. The guide rod 27 is on the side of the U-shaped ring 26 far from the umbrella-opening button 25, and the axis of the guide rod 27 is parallel to the axis of the umbrella-opening button 25. The guide rod 27 is inserted through the U-shaped ring 26 along its axis direction. Taking the shape of the part of the U-shaped ring 26 penetrated by the guide rod 27 as the boundary, there are a limiting part 271 and a linkage part 272 respectively. The limiting part 271 is on the side close to the umbrella-opening button 25, and the linkage part 272 is on the side far from the umbrella-opening button 25.

[0057] Refer to Figure 5 , a connecting block 29 is fixed to the inner wall of the installation cavity 24 by welding or other means. A limiting spring 28 is provided on the connecting block 29. One end of the limiting spring 28 abuts against the connecting block 29, and the length direction of the limiting spring 28 is parallel to the axis direction of the guide rod 27. The limiting spring 28 is sleeved on the linkage part 272, and the other end of the limiting spring 28 abuts against the outer wall on the side of the U-shaped ring 26 close to the connecting block 29. The limiting spring 28 is always in a compressed state.

[0058] See Figure 3 、 Figure 6 , the aforementioned umbrella-opening component includes:

[0059] A telescopic umbrella rib, which consists of an inner sleeve 30 and an outer sleeve 31. Both the inner sleeve 30 and the outer sleeve 31 are straight circular tubes, and the axes of the inner sleeve 30, the outer sleeve 31, and the umbrella handle 23 coincide. One end of the inner sleeve 30 is in the installation cavity 24 inside the umbrella handle 23, and the other end of the inner sleeve 30 penetrates out from the outer wall of the installation cavity 24 near the umbrella-opening component. The connecting plate at one end of the inner sleeve 30 in the installation cavity 24 is fixedly connected to the inner wall of the installation cavity 24 by welding or other means.

[0060] The outer sleeve 31 is sleeved on the inner sleeve 30. One end of the outer sleeve 31 is in the installation cavity 24 inside the umbrella handle 23, and the other end of the outer sleeve 31 penetrates out from the outer wall of the installation cavity 24 near the umbrella-opening component. The aforementioned umbrella-opening component is provided on the outer wall of the part of the outer sleeve 31 that penetrates out from the installation cavity 24. The outer sleeve 31 is arranged to slide relative to the axis of the inner sleeve 30 on the outer wall of the inner sleeve 30. During this process, the outer sleeve 31 also moves relative to the outer wall of the umbrella handle 23.

[0061] A slide groove 32 is provided inside the outer sleeve 31 along its axial direction, for the inner sleeve 30 to generate relative displacement in the outer sleeve 31. A center spring 33 is provided in the slide groove 32, and the length direction of the center spring 33 is along the axial direction of the outer sleeve 31. The two ends of the center spring 33 respectively contact the surface wall of the slide groove 32 and the outer wall of the inner sleeve 30. The center spring 33 is always in a compressed state, and the elastic restoring force generated by the center spring 33 has a tendency to move the outer sleeve 31 relative to the inner sleeve 30 toward the direction where the expansion assembly is located.

[0062] A buckle 34 is fixed to the circumferential outer wall of the outer sleeve 31 by welding or other means. The length direction of the buckle 34 is along the radial direction of the outer sleeve 31. The buckle 34 is in the installation cavity 24, and, from the axis of the outer sleeve 31, the buckle 34 abuts against the side of the limit portion 271 away from the expansion assembly. Limited by the limit portion 271 and the buckle 34, under the elastic force of the center spring 33, the outer sleeve 31 cannot move along the axis of the inner sleeve 30 toward the direction of the expansion assembly.

[0063] A slip ring 35 is sleeved on the circumferential surface wall of the outer sleeve 31. The slip ring 35 is outside the installation cavity 24 and is relatively slidably arranged on the circumferential surface wall of the outer sleeve 31 along the axis of the outer sleeve 31. An upper nesting plate 36 is welded or otherwise fixed to the end of the outer sleeve 31 away from the tailstock 17. Two sets of connecting rods are arranged between the upper nesting plate 36 and the slip ring 35, and the two sets of connecting rods are symmetrically arranged along the axis of the outer sleeve 31.

[0064] The connecting rod includes a first support rod 42 and a second support rod. Figure 3 As can be seen from the middle, the upper end of the first support rod 42 is hinged to the peripheral wall of the upper nest plate 36 through an axis, and the lower end of the first support rod 42 is opened outward along the axis of the outer sleeve 31. The lower end of the second support rod is hinged to the peripheral wall of the slip ring 35 through an axis, and the upper end of the second support rod is hinged to the middle position of the first support rod 42 through an axis. The axes of the hinge axes of the first support rod 42 and the second support rod are parallel.

[0065] In order to achieve the above-mentioned driving of the first support rod to open outward, a fixed pulley 37 is fixed on the upper nest plate 36 by bolts or other means, and a movable pulley 38 is fixed on the slip ring 35 by bolts or other means. The fixed pulley 37 and the movable pulley 38 form a pulley block through a steel rope 39. One end of the steel rope 39 is wound from the uppermost end of the circumferential outer wall of the fixed pulley 37, and then the end is wound downward over the lowermost end of the circumferential outer wall of the movable pulley 38, and finally the end of the steel rope 39 is tied to the lowermost end of the circumferential outer wall of the fixed pulley 37. The end of the steel rope 39 that does not go around the fixed pulley 37 or the movable pulley 38 is called a free end.

[0066] The free end of the steel rope 39 penetrates into the chute 32 from the outer wall of the outer sleeve 31 near the upper nesting plate 36, and passes through the inner sleeve 30 along the axis of the inner sleeve 30. An accommodation cavity 40 is provided in the inner sleeve 30 along the axial direction. The free end of the steel rope 39 is fixedly connected with a spring pressing piece 41 by welding or other means, and the spring pressing piece 41 is clamped and fixed in the accommodation cavity 40.

[0067] In summary, the launching process and the expanding process of the entire launched projectile are as follows:

[0068] Place the projectile (including the expanding assembly) into the ammunition chamber 8 of the cylinder 5. One end of the projectile facing the expanding assembly is close to the air storage and pressurizing chamber 7, and one end of the tail seat 17 is far from the air storage and pressurizing chamber 7. The ammunition slides to the bottom side of the ammunition chamber 8 by its own weight. The air compressor pressurizes the air in the air storage and pressurizing chamber 7. When the air pressure reaches the threshold value, the electric valve 6 is opened. The pressurized air impacts the expanding assembly, causing the projectile (including the expanding assembly) to fly out of the cylinder 5.

[0069] During the flight process, due to the weight of the end of the projectile facing the tail seat 17 being greater than the weight of the end of the projectile facing the expanding assembly. So the attitude of the projectile during flight in the air is that the tail seat 17 is downward. The tail seat 17 first touches the soft base areas such as the swampy beach. Under the action of the conversion of the gravitational potential energy of the projectile into kinetic energy, the tail seat 17 and the expanding assembly are inserted into the soil layer of the soft base area.

[0070] After the tail seat 17 impacts the soil layer of the soft base area, the tail seat 17 is subjected to a collision force, and the tail seat 17 and the projectile deviate along the radial direction of the projectile. Since the pull rope 16 is taut, when the tail seat 17 deviates, one of the pull ropes 16 on one side will be subjected to the pulling force generated by the deviation. The pulling force will be transmitted to the corresponding baffle 15 through the pull rope 16. The baffle 15 and the outer wall of the liquid nitrogen outlet 14 undergo displacement, so that the corresponding liquid nitrogen outlet 14 is torn open, and the liquid nitrogen leaks out from the liquid nitrogen outlet 14 and quickly freezes the water in the soft base area, causing the soft base area to freeze and solidify quickly. At this time, the solidification is completed.

[0071] In addition, due to the deviation of the tail seat 17, the needle seat 18 fixedly connected to the tail seat 17 also deviates correspondingly, and the firing pin 19 on the needle seat 18 also deviates. The top of the firing pin 19 (the end in contact with the gunpowder 20) rubs against the gunpowder 20 due to the relative displacement with the gunpowder 20. The heat generated by the friction causes the gunpowder 20 to burn, and the gunpowder 20 burns out quickly in the direction towards the expanding assembly. The heat generated by the gunpowder 20 is transmitted to the thermistor 22 by heat transfer. The resistance value of the thermistor 22 drops rapidly, and the current of the entire drive circuit increases rapidly. The increase in current triggers more heat generated on the trigger pin 21, and the temperature rises. Since the thermal expansion coefficient of the trigger pin 21 is relatively large, the trigger pin 21 expands significantly after the temperature rises, and the volume of the trigger pin 21 increases rapidly.

[0072] After the volume of the trigger pin 21 increases, the trigger pin 21 will push the umbrella opening button 25 to move and compress the limit spring 28. The limit portion 271 of the guide rod 27 moves with the movement of the U-shaped ring 26. The limit portion 271 is disengaged from the buckle 34 by moving. After the limit portion 271 loses the limit on the buckle 34, the deformation of the center spring 33 is restored, and the restoring force of the center spring 33 pushes the outer sleeve 31 to move along the axial direction toward the expansion component. Restricted by the buckle 34 and the inner wall of the installation cavity 24, the buckle 34 will finally hit the inner surface wall of the installation cavity 24 close to the expansion component and will no longer move.

[0073] During the process of the outer sleeve 31 being pushed by the center spring 33, the upper nest plate 36 and the fixed pulley 37 move with the movement of the outer sleeve 31. After the fixed pulley 37 moves, since the position of the spring pressure plate 41 is fixed in the accommodating chamber 40, the position of the spring pressure plate 41 will not move, so the distance between the fixed pulley 37 and the spring pressure plate 41 becomes farther and farther. Since the overall length of the steel rope 39 remains unchanged, the distance between the fixed pulley 37 and the movable pulley 38 will naturally become closer and closer, that is, the movable pulley 38 relies on the slip ring 35 to move toward the fixed pulley 37 along the axial direction of the outer sleeve 31. As the slip ring 35 slides along the outer sleeve 31, the first support rod 42 and the second support rod also produce corresponding actions and open in the soft soil foundation. At this point, the opening action of the opening assembly is completed.

[0074] The entire solidification and support process is completed within a few minutes. The projectile is launched into the soft foundation area for solidification under the action of the launcher, without the need for workers or engineering machinery to reach the soft foundation area. The launch distance and angle of the projectile can be obtained through multiple launches to obtain relevant experience in the amount of gunpowder used to ensure that the projectile can be launched into the soft foundation area.

[0075] The advantage of this application is that the projectile is used to fly to soft foundation areas such as swamps, and the soft foundation area is automatically solidified by liquid nitrogen. There is no need for constructors and engineering machinery to go to the soft foundation area for on-site construction. The curing process of this application does not generate noise from engineering machinery, so it is relatively quiet. In addition, the curing speed of liquid nitrogen is very fast, and the soft foundation area can be quickly solidified.

[0076] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A remote silent ground rapid freezing and solidifying treatment device for tidal flat areas, characterized in that It includes a projectile and a launching device for launching the projectile; The projectile is provided with a liquid nitrogen chamber; A liquid nitrogen outlet is provided on the surface wall of the projectile, and the liquid nitrogen outlet is connected to the liquid nitrogen cavity; the liquid nitrogen cavity is filled with liquid nitrogen; a baffle is connected to the liquid nitrogen outlet to close the liquid nitrogen cavity; The launcher is connected to a tailstock, and a pull rope is connected between the tailstock and the baffle; after the tailstock is hit, the tailstock separates the baffle from the liquid nitrogen outlet through the pull rope; the launcher also includes an ignition trigger chamber and an equipment chamber; A needle seat is provided in the ignition trigger chamber and fixed on the tailstock; a striker is fixed on the needle seat and is located in the ignition trigger chamber; the ignition trigger chamber is filled with gunpowder, and the end of the striker away from the needle seat contacts the gunpowder, which is used to ignite the gunpowder after the tailstock moves; A drive circuit is provided in the device cavity, and the drive circuit includes a battery, a trigger needle and a thermistor connected in series. The thermistor is used to receive the heat generated by the combustion of gunpowder and increase the current in the drive circuit; An opening assembly is provided at one end of the projectile away from the tail seat, and an opening assembly for opening the opening assembly is provided in the equipment cavity, and the trigger pin contacts the opening assembly; The trigger pin increases the current to activate the umbrella opening assembly, and the umbrella opening assembly is used to open the expansion assembly; The parachute opening assembly comprises: An umbrella handle is fixed in the equipment cavity, a mounting cavity is provided inside the umbrella handle, and the umbrella handle is in the shape of a straight cylinder; An umbrella opening button is radially slidably arranged on the surface wall of the umbrella handle, one end of the umbrella opening button extends into the installation cavity, and the other end contacts the trigger pin; a U-shaped ring is fixed to the end of the umbrella opening button extending into the installation cavity, and a guide rod is fixed to the U-shaped ring; An inner sleeve is provided in the installation cavity, and the inner sleeve is a straight tube, one end of which is fixed on the inner wall of the installation cavity, and the other end of which extends out of the installation cavity from an end close to the expansion assembly; An outer sleeve is sleeved on the inner sleeve, the outer sleeve is a straight tube, and the expansion assembly is arranged on the outer sleeve; a slide groove for the inner sleeve to slide is arranged in the outer sleeve, and a center spring is arranged in the slide groove, and the center spring is in a compressed state, and is used to drive the outer sleeve to move along its axis in a direction away from the installation cavity; A buckle is fixed on the cylindrical surface wall of the outer sleeve, and the buckle contacts the guide rod. The guide rod is used to limit the movement of the outer sleeve through the buckle, and is disengaged from the buckle after the umbrella opening button moves. The guide rod is connected with a limit assembly for maintaining the buckle position.

2. The rapid freezing and solidifying treatment device for remote silent foundation in tidal flat area according to claim 1, characterized in that, The expansion assembly comprises: An upper nesting plate fixed on the end of the outer sleeve away from the installation cavity; a collar sleeved on the outer sleeve, the collar sleeve being relatively slidably arranged on the outer sleeve along the axis of the outer sleeve; two sets of connecting rods symmetrically along the axis of the outer sleeve; a fixed pulley and a movable pulley respectively fixed on the upper nesting plate and the collar sleeve; a pull rope with one end wound around the circumferential outer wall of the fixed pulley and the movable pulley and fixedly connected to the fixed pulley; an elastic pressing sheet is fixed on the other end of the pull rope, and a receiving cavity is arranged in the inner sleeve, and the spring pressing sheet is fixed in the receiving cavity; The connecting rod comprises a first supporting rod and a second supporting rod. One end of the first supporting rod is hinged on the upper nest plate; one end of the second supporting rod is hinged on the sliding ring, and the other end is hinged on the middle position of the first supporting rod.

3. The rapid freezing and solidification treatment device for remote silent foundation in tidal flat area according to claim 2, wherein, The guide rod is arranged on the U-shaped ring along the sliding direction of the umbrella opening button, and the guide rod includes a limiting part and a guiding part, and the limiting part is in conflict with the buckle; The limiting component includes a limiting spring sleeved on the guide rod, and the length direction of the limiting spring is parallel to the moving direction of the parachute-opening button; a connecting block is fixed on the inner wall of the installation cavity, and the two ends of the limiting spring respectively abut against the surface of the U-shaped ring facing away from the parachute-opening button and the surface of the connecting block.

4. A remote silent ground rapid freezing and solidifying treatment device for tidal flat areas, characterized in that, The ejection device includes: A base plate fixed on a hard ground; a support frame is fixed on the base plate; a cylinder body is rotatably connected to the support frame, the cylinder body is obliquely placed, and the cylinder body is in the shape of a straight cylindrical barrel; an electric valve is fixed on the inner wall of the cylinder body; an air storage and pressurization cavity and a ammunition cavity are arranged inside the cylinder body; the electric valve is arranged between the air storage and pressurization cavity and the ammunition cavity and is used for communicating or blocking the air storage and pressurization cavity and the ammunition cavity; an air injection nozzle is connected to the air storage and pressurization cavity, the air injection nozzle is communicated with the air storage and pressurization cavity, and the air injection nozzle is connected to an air compressor for injecting and pressurizing air into the air storage and pressurization cavity.

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