A soil infiltration test device and method of use thereof

Abstract

The application relates to the technical field of soil infiltration test devices, and discloses a soil infiltration test device and a use method thereof, which comprises the following steps: a rotating drum is rotationally connected to the top end of a base, coordinate paper is pasted on the inner wall of the rotating drum, a driving mechanism is arranged on one side of the rotating drum, the infiltration mechanism can be driven through the driving mechanism, and the soil infiltration test solution is ensured to be sufficient. Meanwhile, the driving mechanism can also drive the rotating drum to slowly and uniformly rotate. The solution in the lower solution cavity is finally collected at the bottom of the collecting frame and the side frame after penetrating through the soil columns in the three columns, with the continuous addition of the solution in the side frame, the floating seat is driven to move upwards, the hollow top column drives the drawing pens to move upwards, with the slow rotation of the rotating drum, three lines can be drawn on the coordinate paper through the three drawing pens, the soil infiltration per unit time can be simply and clearly observed, comparison experiments can be carried out through the observation of the three drawn curves, and the accuracy of the test results is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of soil infiltration test devices, and in particular to a soil infiltration test device and a use method thereof. Background Art

[0002] Soil infiltration rate refers to the amount of water that infiltrates per unit area of ​​soil per unit time. It reflects the soil's ability to absorb water. The infiltration rate is closely related to the infiltration process. Initially, the soil infiltration rate is very high; this is called the initial infiltration rate or initial infiltration rate. As rainfall continues and increases, the infiltration rate decreases, eventually maintaining a stable value, called the final infiltration rate or steady-state infiltration rate, which characterizes the soil's permeability characteristics. The soil infiltration rate decreases over time. Initially, the soil has low water content and a high infiltration rate. As time progresses and soil water content increases, matrix suction decreases, and the infiltration rate gradually decreases, eventually reaching a stable value, known as the steady-state infiltration rate. The magnitude of the steady-state infiltration rate depends on factors such as the soil's porosity, texture, structure, soil cracks, and surface crust. The development of infiltration testing equipment is also becoming increasingly diverse.

[0003] After searching, an existing patent (Announcement No.: CN105259090B) discloses a soil infiltrator, comprising a sample container, a first water reservoir, a second water reservoir, and a water pump; the sample container is located inside the first water reservoir; the first water reservoir is located inside the second water reservoir; the height of the first water reservoir is higher than the height of the sample container; the top of the sample container is open, and the sample container is used to hold a soil sample; the water pump is used to inject liquid from the second water reservoir into the first water reservoir, so that the liquid in the first water reservoir flows from the top of the sample container through the soil sample and is discharged from the bottom of the sample container. The experimental device of this invention is simple, low-cost, and easy to carry, making it convenient for researchers conducting experiments outdoors to determine the soil permeability coefficient using the constant head test method.

[0004] However, there are still some shortcomings in the above solution:

[0005] 1. There is only one set of sample containers. However, in actual soil infiltration tests, it is difficult to obtain stable and accurate sample results with only one set of test data. The lack of comparative tests makes the test results less reliable.

[0006] 2. When conducting soil infiltration tests, the seeping water is collected through a water collector. During this process, it is difficult to observe the soil infiltration rate simply and intuitively, and it is impossible to simply and clearly reflect the soil's initial, mid-term and late water penetration capacity.

[0007] In view of this, the present invention provides a soil infiltration test device and a method for using the same. Summary of the Invention

[0008] The present invention proposes a soil infiltration test device and a method for using the same, which solves the problem that the soil infiltration device in the related art lacks comparative tests, resulting in poor reliability of the test results and the inability to simply and clearly reflect the soil's initial, mid-term and late water penetration capacity.

[0009] The technical solution of the present invention is as follows: A soil infiltration test device comprises: a base and a mounting frame fixedly connected to the top of the base, a rotating drum rotatably connected to the top of the base, a gear ring fixedly connected to the outer periphery of the rotating drum, and a coordinate paper posted on the inner wall of the rotating drum;

[0010] A loading and unloading mechanism is provided on the upper side of the mounting frame. The loading and unloading mechanism includes a material holding component for limiting and placing soil blocks to be tested. A feeding component is provided on one side of the material holding component for partially collecting soil blocks placed on the material holding component as soil raw materials for infiltration tests.

[0011] An infiltration mechanism is provided on the upper side of the mounting frame. The infiltration mechanism includes an infiltration test assembly for placing the infiltration test soil raw materials collected by the feeding assembly. A solution delivery assembly is provided on one side of the infiltration test assembly for delivering the solution into the inner side of the infiltration test assembly so that the solution entering the inner side of the infiltration test assembly can seep downward through the infiltration test soil raw materials.

[0012] The inner side of the rotating drum is provided with a test result drawing mechanism for collecting the solution leaked from the soil raw material after the infiltration test;

[0013] A driving mechanism is provided on one side of the rotating drum for driving the gear ring, thereby driving the rotating drum to rotate. While the driving mechanism drives the gear ring, it can drive the solution delivery component to deliver the solution to the inside of the infiltration experiment component.

[0014] Preferably, the test result drawing mechanism includes three collection frames placed on the top of the base, each of the collection frames is fixedly connected to a support block at the four inner corners on the lower side, the upper ends of the four support blocks are jointly overlapped with a floating seat, the top of the floating seat is fixedly connected to a hollow top column, one end of the hollow top column is threadedly connected to a threaded end, and the end of the threaded end away from the hollow top column is connected to a drawing pen, the tip of the drawing pen is in contact with the outer wall of the coordinate paper, and the three drawing pens are at the same height.

[0015] Preferably, each collecting frame is fixedly connected to a side frame on one side, the side frame is connected to the collecting frame, the top of the side frame is fixedly connected to a solution delivery tube via a connecting block, and the solution delivery tube is connected to the inside of the side frame.

[0016] Preferably, the driving mechanism includes a frame fixedly connected to the top of the base by bolts, a motor is fixedly mounted on the upper end of the frame, a transmission gear is fixedly connected to the end of the output shaft of the motor, the transmission gear is meshed with the gear ring, the top of the transmission gear is fixedly connected to a large bevel gear, the upper side of the large bevel gear is meshed with a small bevel gear, one end of the small bevel gear is fixedly connected to a turntable, the side wall of the frame is fixedly connected to a right-angle frame, the outer wall of the right-angle frame is fixedly connected to a connecting shaft, the small bevel gear is rotatably connected to the connecting shaft, and the outer wall of the turntable is rotatably connected to a connecting rod via an axis.

[0017] Preferably, the material holding assembly includes a support plate fixed to the outer wall of the mounting frame, a guide plate fixed to the upper end of the support plate, two rotating blocks symmetrically fixed to the outer wall of the guide plate, a bidirectional screw rod rotatably connected between the two rotating blocks, two side plates symmetrically arranged on the upper side of the support plate, the side plates are clamped to the outer side of the guide plate, the bidirectional screw rod threads penetrate the inside of the side plates, and a telescopic plate is sandwiched between the two side plates;

[0018] The telescopic plate includes an outer frame, two inner plates are slidably arranged on the inner side of the outer frame, a partition is fixedly connected to the inner side of the outer frame between the two inner plates, a plurality of transverse axes are fixedly connected to the inner side of the partition, the transverse axes extend to the inner side of the inner plate and are slidably connected thereto, and a return spring is sleeved on the outer side of the transverse axis.

[0019] Preferably, the feeding assembly includes a connecting plate fixedly connected to the side wall of the mounting frame, the upper end of the connecting plate is fixedly connected to a column, the top of the column is rotatably connected to a swing plate, the bottom of the swing plate is installed with an electric hydraulic press, the bottom end of the hydraulic rod on the electric hydraulic press is fixedly connected to a star frame, three column cylinders are fixedly connected in a circular array inside the star frame, and the top of the mounting frame is fixedly connected to a limiting plate.

[0020] Preferably, the infiltration experiment component includes an upper solution frame fixedly connected to the mounting frame, a lap tube is fixedly connected to the inner circle of the upper solution frame, a lower solution cavity is opened on the upper side of the lap tube, the top of the upper solution frame is higher than the top of the lap tube, a star-shaped cavity for placing the star frame is opened inside the lap tube located at the lower side of the lower solution cavity, and three tube cavities are opened inside the lap tube located at the lower side of the star-shaped cavity for inserting the column tube.

[0021] Preferably, the bottom end of each overlapping tube on the lower side of the tubular cavity is fixed with a threaded sleeve, the outer wall of the threaded sleeve is threadedly connected to a conical cylinder, the upper port of the threaded sleeve is provided with a partition net, and the lower port of the conical cylinder is fixedly connected to the upper port of the solution delivery tube.

[0022] Preferably, the solution delivery component includes a solution box fixedly connected to the mounting frame, a piston cylinder fixedly connected through the bottom of the solution box, a transmission piston is slidingly sleeved inside the piston cylinder, a built-in rod is fixedly connected to the inner side of the transmission piston, the connecting rod is rotatably connected to the built-in rod, a solution inlet pipe and a solution discharge pipe are fixedly connected to the upper side of the piston cylinder, a one-way valve is provided on one end of the solution inlet pipe and the solution discharge pipe close to the piston cylinder, the solution discharge pipe is fixedly passed through the outer wall of the solution box, and the bottom end of the solution discharge pipe is located above the upper solution frame.

[0023] A method for using a soil infiltration test device comprises the following steps:

[0024] S1. Place the prepared test soil block on the support plate, rotate the two-way screw to move the two side plates closer to each other, and manually push the telescopic plate. Use the guide plate, side plates and telescopic plate to limit the square soil block to a certain extent;

[0025] S2. Next, the swing plate is rotated at the top of the column so that the star frame is located above the test soil block. Then, the electric hydraulic pressure is activated to push the star frame downward so that the three columns are inserted into the test soil block. The soil is filled in the columns to form soil columns, and the soil columns are now tightly attached to the inner wall of the columns.

[0026] S3. After the soil column is collected, the star frame is lifted by the electric hydraulic device, and the swing plate is rotated until it is in contact with the limit plate. Then, the star frame is pushed down by the electric hydraulic device, and the star frame is overlapped inside the star cavity. The column is inserted into the tube cavity so that the bottom end of the column contacts the partition screen;

[0027] S4. When the infiltration test is carried out, the motor is started and the solution is injected into the lower solution cavity to fill the lower solution cavity. When the motor is started, the motor drives the transmission gear to rotate through its output shaft, and the transmission gear drives the rotating drum to rotate slowly through the gear ring, and the transmission gear can drive the large bevel gear to rotate, and the large bevel gear drives the turntable to rotate through the small bevel gear. The rotating turntable pushes and pulls the connecting rod back and forth, so that the connecting rod pushes and pulls the transmission piston back and forth through the built-in rod. When the transmission piston moves downward, the one-way valve at the solution inlet pipe port is opened, and the one-way valve at the end of the solution discharge pipe is closed, so that the solution inside the solution tank is pumped into the piston cylinder. When the transmission piston moves upward, the one-way valve at the solution inlet pipe port is closed, and the one-way valve at the end of the solution discharge pipe is opened, so that the solution inside the piston cylinder can be transported to the interior of the upper solution frame through the solution discharge pipe, and flow into the interior of the lower solution cavity through the upper solution frame, thereby continuously transporting the solution to the interior of the lower solution cavity.

[0028] S5. After the solution in the lower solution cavity permeates through the soil columns inside the three columns, it flows into the three solution delivery pipes through the three cones respectively, and then flows into the inside of the side frame through the solution delivery pipes. Since the side frame is connected to the collection frame, it will eventually be collected at the collection frame and the bottom of the side frame. It should be noted that, initially, the float seat is overlapped with the upper end of the support block, and the bottom of the float seat is pre-stored with solution in contact with the bottom surface of the float seat;

[0029] S6. As the solution inside the side frame is continuously added, the liquid level inside the collection frame rises, driving the floating seat to move upward. The floating seat drives the painting pen to move upward through the hollow top column. As the rotating drum rotates slowly, three lines can be drawn on the coordinate paper with the three painting pens. In this way, the infiltration of the soil can be observed. For the convenience of observation, the colors of the three painting pens can be different.

[0030] The working principle and beneficial effects of the present invention are:

[0031] 1. In the present invention, a rotating drum is rotatably connected to the top of the base, a gear ring is fixed to the outer periphery of the rotating drum, and coordinate paper is posted on the inner wall of the rotating drum. An infiltration mechanism is provided on the upper side of the mounting frame, wherein the infiltration mechanism includes an infiltration experiment component and a solution delivery component. A driving mechanism is provided on one side of the rotating drum. The driving mechanism can cause the connecting rod to reciprocately push and pull the transmission piston through the built-in rod, so that the solution inside the solution tank can be delivered to the interior of the upper solution frame through the solution discharge pipe, and then flow into the interior of the lower solution cavity through the upper solution frame, thereby continuously delivering the solution to the interior of the lower solution cavity and ensuring sufficient solution for the soil infiltration test;

[0032] 2. In the present invention, while the driving mechanism drives the infiltration mechanism, it can also drive the rotating drum to rotate slowly and uniformly. The solution inside the lower solution cavity permeates through the soil columns inside the three cylinders, flows into the three solution delivery pipes through the three cone cylinders respectively, and then flows into the side frames through the solution delivery pipes, and finally gathers in the collection frame and the bottom of the side frames. As the solution inside the side frames is continuously added, the solution level inside the collection frame rises, driving the floating seat to move up, and the floating seat drives the drawing pen to move up through the hollow top column. As the rotating drum rotates slowly, three lines can be drawn on the coordinate paper by the three drawing pens. The horizontal axis of the coordinate paper can be the time axis, and the vertical axis of the coordinate paper can be the capacity value. In this way, the infiltration of the soil per unit time (the rotating drum rotates at a uniform and slow speed) can be observed simply and clearly. For the convenience of observation, the colors of the three drawing pens can be different. By observing the three drawn curves, it can be used for comparative experiments to obtain the average infiltration amount in a certain period of time, which significantly improves the accuracy of the test results. The structure is simple and the design is ingenious, providing direction for soil infiltration tests and has high use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Figure 1 This is a schematic diagram of the three-dimensional structure of a soil infiltration test device proposed by the present invention;

[0035] Figure 2 This is a schematic diagram of the structural composition of the loading and unloading mechanism proposed in the present invention;

[0036] Figure 3 This is a schematic diagram of the inner assembly structure of the telescopic plate proposed by the present invention;

[0037] Figure 4 This is a schematic diagram of the internal structure of the drum proposed by the present invention;

[0038] Figure 5 for Figure 4 A in the middle is an enlarged structural diagram;

[0039] Figure 6 This is a schematic diagram of the assembly structure of the infiltration mechanism proposed in the present invention;

[0040] Figure 7 Draw a schematic diagram of the mechanism assembly structure for the test results proposed by the present invention;

[0041] Figure 8 A schematic diagram of the structure of a curve drawn on the coordinate paper proposed by the present invention;

[0042] In the picture:

[0043] 1. Base;

[0044] 2. Test result drawing mechanism; 21. Solution delivery tube; 22. Hollow top column; 23. Side frame; 24. Collection frame; 25. Floating seat; 26. Support block; 27. Connecting block; 28. Drawing pen; 29. ​​Threaded end;

[0045] 3. Gear ring;

[0046] 4. Rotating drum;

[0047] 5. Graph paper;

[0048] 6. Mounting frame;

[0049] 7. Loading mechanism; 71. Feeding assembly; 711. Connecting plate; 712. Column; 713. Swing plate; 714. Limit plate; 715. Star frame; 716. Electric hydraulic actuator; 717. Column; 72. Material holding assembly; 721. Support plate; 722. Guide plate; 723. Bidirectional screw; 724. Side plate; 725. Telescopic plate; 726. Rotating block; 7251. Outer frame; 7252. Partition plate; 7253. Inner plate; 7254. Horizontal axis; 7255. Return spring;

[0050] 8. Infiltration mechanism; 81. Solution delivery assembly; 811. Solution tank; 812. Solution discharge pipe; 813. Piston cylinder; 814. Transmission piston; 815. Internal rod; 816. Solution inlet pipe; 82. Infiltration experiment assembly; 821. Upper solution frame; 822. Lower solution cavity; 823. Star-shaped cavity; 824. Overlapping cylinder; 825. Tube cavity; 826. Spacer; 827. Conical cylinder; 828. Threaded sleeve;

[0051] 9. Driving mechanism; 91. Frame; 92. Motor; 93. Transmission gear; 94. Large bevel gear; 95. Right-angle frame; 96. Connecting shaft; 97. Small bevel gear; 98. Connecting rod; 99. Turntable. DETAILED DESCRIPTION

[0052] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0053] Example 1

[0054] See also Figure 1 、 Figure 2 、 Figure 3 as well as Figure 6 A soil infiltration test device and its use method include: a base 1 and a mounting frame 6 fixedly connected to the top of the base 1. A loading and unloading mechanism 7 is provided on the upper side of the mounting frame 6. The loading and unloading mechanism 7 includes a material holding component 72 for limiting the placement of soil blocks to be tested. A feeding component 71 is provided on one side of the material holding component 72 for partially collecting soil blocks placed on the material holding component 72 as soil raw materials for infiltration tests. An infiltration mechanism 8 is provided on the upper side of the mounting frame 6. The infiltration mechanism 8 includes an infiltration test component 82 for placing the infiltration test soil raw materials collected by the feeding component 71. A solution delivery component 81 is provided on one side of the infiltration test component 82 for delivering solution to the inside of the infiltration test component 82, so that the solution entering the inside of the infiltration test component 82 can seep downward through the infiltration test soil raw materials.

[0055] Furthermore, the material holding assembly 72 includes a support plate 721 fixed to the outer wall of the mounting frame 6, a guide plate 722 is fixed to the upper end of the support plate 721, two rotating blocks 726 are symmetrically fixed to the outer wall of the guide plate 722, a bidirectional screw rod 723 is rotatably connected between the two rotating blocks 726, two side plates 724 are symmetrically arranged on the upper side of the support plate 721, the side plates 724 are clamped on the outer side of the guide plate 722, the bidirectional screw rod 723 is threaded through the inside of the side plates 724, and a telescopic plate 725 is sandwiched between the two side plates 724. The telescopic plate 725 includes an outer frame 7251, and two inner plates 7253 are slidingly arranged on the inner side of the outer frame 7251. A partition 7252 is fixedly connected to the inner side of the outer frame 7251 between the two inner plates 7253. Several horizontal axes 7254 are fixedly connected to the inner side of the partition 7252. The horizontal axes 7254 extend to the inner side of the inner plates 7253 and are slidingly connected thereto. A return spring 7255 is sleeved on the outer side of the horizontal axis 7254.

[0056] The feeding assembly 71 includes a connecting plate 711 fixed to the side wall of the mounting frame 6, the upper end of the connecting plate 711 is fixed to a column 712, the top of the column 712 is rotatably connected to a swing plate 713, the bottom of the swing plate 713 is installed with an electric hydraulic device 716, the bottom end of the hydraulic rod on the electric hydraulic device 716 is fixed to a star frame 715, three column cylinders 717 are fixed in a ring array inside the star frame 715, and the top of the mounting frame 6 is fixed to a limiting plate 714.

[0057] Furthermore, the infiltration experiment assembly 82 includes an upper solution frame 821 fixed to the mounting frame 6. The inner ring of the upper solution frame 821 is fixed with a lap tube 824. The upper side of the lap tube 824 is provided with a lower solution cavity 822. The top of the upper solution frame 821 is higher than the top of the lap tube 824. The lap tube 824 located below the lower solution cavity 822 has a star-shaped cavity 823 for placing the star frame 715. The lap tube 824 located below the star-shaped cavity 823 has three tube cavities 825 for inserting the column 717. The bottom end of the lap tube 824 below each tube cavity 825 is fixed with a threaded sleeve 828. The outer wall of the threaded sleeve 828 is threadedly connected to a cone 827. The upper end of the threaded sleeve 828 is provided with a spacer 826. The lower end of the cone 827 is fixedly connected to the upper end of the solution delivery tube 21.

[0058] The solution delivery component 81 includes a solution box 811 fixedly connected to the mounting frame 6, a piston cylinder 813 is fixedly connected to the bottom of the solution box 811, a transmission piston 814 is slidingly sleeved inside the piston cylinder 813, a built-in rod 815 is fixedly connected to the inner side of the transmission piston 814, and the connecting rod 98 is rotatably connected to the built-in rod 815. The upper side of the piston cylinder 813 is fixedly connected to a solution inlet pipe 816 and a solution discharge pipe 812. The solution inlet pipe 816 and the solution discharge pipe 812 are both provided with a one-way valve at one end close to the piston cylinder 813. The solution discharge pipe 812 is fixedly passed through the outer wall of the solution box 811, and the bottom end of the solution discharge pipe 812 is located above the upper solution frame 821.

[0059] In this embodiment, before infiltration, a pre-prepared test soil block is placed on the support plate 721. By rotating the bidirectional screw 723, the two side plates 724 are brought closer together, and the telescopic plate 725 is manually pushed. The square soil block is constrained by the guide plate 722, the side plates 724, and the telescopic plate 725. Next, the swing plate 713 is rotated at the top of the column 712, so that the star frame 715 is located above the test soil block. Then, the electric hydraulic pressure 716 is activated, and the star frame 715 is pushed downward by the electric hydraulic pressure 716, so that the three column barrels 717 are inserted into the test soil block, so that the soil fills the column barrels 717 to form a soil column, and the soil column is now tightly fitted with the inner wall of the column barrel 717. After the soil column is collected, the star frame 715 is lifted by the electric hydraulic machine 716, and the swing plate 713 is rotated to fit with the limit plate 714. Then, the star frame 715 is pushed down by the electric hydraulic machine 716, and the star frame 715 is overlapped inside the star cavity 823. The column tube 717 is inserted into the tube cavity 825 so that the bottom end of the column tube 717 is in contact with the partition net 826.

[0060] In this embodiment, a drive mechanism 9 is provided on one side of the rotating drum 4 to drive the solution delivery assembly 81 to deliver solution to the inside of the infiltration experimental assembly 82. The drive mechanism 9 enables the connecting rod 98 to push and pull the transmission piston 814 back and forth via the internal rod 815. When the transmission piston 814 moves downward, the one-way valve at the end of the solution inlet pipe 816 opens, and the one-way valve at the end of the solution discharge pipe 812 closes, allowing the solution inside the solution tank 811 to be pumped into the piston cylinder 813. When the transmission piston 814 moves upward, the one-way valve at the end of the solution inlet pipe 816 closes, and the one-way valve at the end of the solution discharge pipe 812 opens, allowing the solution inside the piston cylinder 813 to be delivered to the interior of the upper solution frame 821 through the solution discharge pipe 812, and then flow into the interior of the lower solution cavity 822 through the upper solution frame 821, thereby continuously delivering solution to the interior of the lower solution cavity 822.

[0061] Example 2

[0062] See also Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 as well as Figure 8 A soil infiltration test device and method of use thereof include all of the contents of Example 1. Furthermore, a rotating drum 4 is rotatably connected to the top of a base 1. A gear ring 3 is fixedly attached to the outer periphery of the rotating drum 4, and coordinate paper 5 is affixed to the inner wall of the rotating drum 4. A test result plotting mechanism 2 is provided inside the rotating drum 4 to collect solution that leaks from the infiltration test soil raw material. A drive mechanism 9, provided on one side of the rotating drum 4, is capable of driving the gear ring 3, thereby causing the rotating drum 4 to rotate.

[0063] Specifically, the test result plotting mechanism 2 comprises three collection frames 24 placed atop the base 1. Each collection frame 24 is secured to a support block 26 at each of its four inner corners, near its lower side. A floating seat 25 is attached to the top of each of the four support blocks 26. A hollow top post 22 is secured to the top of the floating seat 25. A threaded end 29 is threadedly connected to one end of the hollow top post 22. A drawing pen 28 is attached to the end of the threaded end 29, distal from the hollow top post 22. The tips of the drawing pens 28 contact the outer wall of the coordinate paper 5, and all three drawing pens 28 are positioned at the same height. A side frame 23 is secured to one side of each collection frame 24, connecting the side frame 23 to the collection frame 24. A solution delivery tube 21 is secured to the top of the side frame 23 via a connecting block 27, connecting the solution delivery tube 21 to the interior of the side frame 23.

[0064] Furthermore, the driving mechanism 9 includes a frame 91 fixed to the top of the base 1 by bolts, and a motor 92 is fixedly installed on the upper end of the frame 91. The output shaft end of the motor 92 is fixedly connected to a transmission gear 93, and the transmission gear 93 is meshed with the gear ring 3. The top of the transmission gear 93 is fixedly connected to a large bevel gear 94, and the upper side of the large bevel gear 94 is meshed with a small bevel gear 97. One end of the small bevel gear 97 is fixedly connected to a turntable 99, and the side wall of the frame 91 is fixedly connected to a right-angle frame 95. The outer wall of the right-angle frame 95 is fixedly connected to a connecting shaft 96. The small bevel gear 97 is rotatably connected to the connecting shaft 96, and the outer wall of the turntable 99 is rotatably connected to a connecting rod 98 through an axis.

[0065] In this embodiment, when the motor 92 is started, the motor 92 drives the transmission gear 93 to rotate through its output shaft, and the transmission gear 93 drives the rotating drum 4 to rotate slowly through the gear ring 3, and the transmission gear 93 can drive the large bevel gear 94 to rotate, and the large bevel gear 94 drives the turntable 99 to rotate through the small bevel gear 97. The rotating turntable 99 pushes and pulls the connecting rod 98 back and forth, so that the connecting rod 98 pushes and pulls the transmission piston 814 back and forth through the built-in rod 815.

[0066] In the embodiment, the solution inside the lower solution cavity 822 penetrates through the soil column inside the three column barrels 717, and then flows into the three solution conveying pipes 21 through the three conical barrels 827, and then flows into the side frame 23 through the solution conveying pipes 21. Since the side frame 23 is connected with the collecting frame 24, the solution finally collects at the bottom of the collecting frame 24 and the side frame 23. It should be noted that initially, the floating seat 25 is overlapped on the upper end of the supporting block 26, and the floating seat 25 has stored the solution in contact with the bottom surface of the floating seat 25 in advance. With the continuous addition of the solution inside the side frame 23, the liquid level of the solution inside the collecting frame 24 rises, driving the floating seat 25 to move upward. The floating seat 25 drives the drawing pen 28 to move upward through the hollow top column 22. With the slow rotation of the rotating drum 4, three lines can be drawn on the coordinate paper 5 by the three drawing pens 28. In this way, the infiltration of the soil can be observed. In order to facilitate observation, the colors of the three drawing pens 28 can be different.

[0067] Working principle and use process: the test soil block prepared in advance is placed on the supporting plate 721, the two side plates 724 are moved close to each other by rotating the bidirectional screw rod 723, and the telescopic plate 725 is manually pushed, so that the quadrilateral soil block is limited and constrained by the guide plate 722, the side plate 724 and the telescopic plate 725. Then, the swing plate 713 is rotated at the top end of the stand column 712, so that the star-shaped frame 715 is located above the test soil block. After that, the electric hydraulic device 716 is started, and the star-shaped frame 715 is pushed down by the electric hydraulic device 716, so that the three column barrels 717 are inserted into the test soil block, so that the soil is filled in the column barrels 717 to form soil columns, and the soil columns are tightly fitted with the inner walls of the column barrels 717 at this time. After the soil column collection is completed, the remaining soil block on the supporting plate 721 can be selectively pushed and discharged. Then, the star-shaped frame 715 is lifted by the electric hydraulic device 716, the swing plate 713 is rotated to be in contact with the limiting plate 714, and then the star-shaped frame 715 is pushed down by the electric hydraulic device 716 to be overlapped in the star-shaped cavity 823. The column barrel 717 is inserted into the pipe cavity 825, so that the bottom end of the column barrel 717 is in contact with the separation net 826.

[0068] When conducting an infiltration test, the motor 92 is started, and the solution is injected into the lower solution cavity 822 to fill the lower solution cavity 822. When the motor 92 is started, the motor 92 drives the transmission gear 93 to rotate through its output shaft, and the transmission gear 93 drives the rotating drum 4 to rotate slowly through the gear ring 3, and the transmission gear 93 can drive the large bevel gear 94 to rotate. The large bevel gear 94 drives the turntable 99 to rotate through the small bevel gear 97. The rotating turntable 99 pushes and pulls the connecting rod 98 back and forth, so that the connecting rod 98 pushes and pulls the transmission piston 814 back and forth through the built-in rod 815. When the transmission piston 814 moves downward, the one-way valve at the end of the solution inlet pipe 816 is opened, and the one-way valve at the end of the solution discharge pipe 812 is closed, so that the solution inside the solution box 811 is pumped into the piston cylinder 813. When the piston moves upward, the one-way valve at the end of the solution inlet pipe 816 is closed, and the one-way valve at the end of the solution discharge pipe 812 is opened, so that the solution inside the piston cylinder 813 can be transported to the interior of the upper solution frame 821 through the solution discharge pipe 812, and then flow into the interior of the lower solution cavity 822 through the upper solution frame 821, thereby continuously transporting the solution to the interior of the lower solution cavity 822. After the solution inside the lower solution cavity 822 permeates through the soil columns inside the three columns 717, it flows into the interior of the three solution delivery pipes 21 through the three cones 827 respectively, and then flows into the interior of the side frame 23 through the solution delivery pipes 21. Since the side frame 23 is connected to the collection frame 24, the solution will eventually be collected at the bottom of the collection frame 24 and the side frame 23. It should be noted that, initially, the floating seat 25 is overlapped on the upper end of the supporting block 26, and the bottom of the floating seat 25 is pre-stored with the solution in contact with the bottom surface of the floating seat 25.

[0069] As the solution inside the side frame 23 is continuously added, the liquid level of the solution inside the collecting frame 24 rises, driving the floating seat 25 to move upward. The floating seat 25 drives the painting pen 28 to move upward through the hollow top column 22. As the rotating drum 4 slowly rotates, three lines can be drawn on the coordinate paper 5 by the three painting pens 28. Preferably, the horizontal axis of the coordinate paper 5 can be the time axis, and the vertical axis of the coordinate paper 5 can be the capacity value. In this way, the infiltration of the soil per unit time (the rotating drum 4 rotates slowly and uniformly) can be observed. In order to facilitate observation, the colors of the three painting pens 28 can be different. By observing the three drawn curves, it can be used to conduct comparative experiments to improve the accuracy of the test results.

[0070] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A soil infiltration test device, comprising: A base (1) and a mounting frame (6) fixedly connected to the top of the base (1), characterized in that a rotating drum (4) is rotatably connected to the top of the base (1), a gear ring (3) is fixed to the outer periphery of the rotating drum (4), and a coordinate paper (5) is posted on the inner wall of the rotating drum (4); A loading and unloading mechanism (7) is provided on the upper side of the mounting frame (6), and the loading and unloading mechanism (7) includes a material holding component (72) for limiting the placement of soil blocks to be tested, and a feeding component (71) is provided on one side of the material holding component (72) for partially collecting soil blocks placed on the material holding component (72) as soil raw materials for infiltration tests; An infiltration mechanism (8) is provided on the upper side of the mounting frame (6), and the infiltration mechanism (8) includes an infiltration test component (82) for placing the infiltration test soil raw material collected by the feeding component (71), and a solution delivery component (81) is provided on one side of the infiltration test component (82) for delivering the solution to the inside of the infiltration test component (82), so that the solution entering the inside of the infiltration test component (82) can seep downward through the infiltration test soil raw material; A test result drawing mechanism (2) is provided inside the rotating drum (4) for collecting the solution leaked from the soil raw material after the infiltration test; A driving mechanism (9) is provided on one side of the rotating drum (4) for driving the gear ring (3), thereby driving the rotating drum (4) to rotate. While the driving mechanism (9) drives the gear ring (3), it can also drive the solution delivery component (81) to deliver the solution to the inside of the infiltration experiment component (82); The test result drawing mechanism (2) includes three collecting frames (24) placed on the top of the base (1), each of the collecting frames (24) is fixedly connected to a support block (26) at the four inner corners on the lower side, and the upper ends of the four support blocks (26) are commonly overlapped with a floating seat (25), and the top of the floating seat (25) is fixedly connected to a hollow top column (22), one end of the hollow top column (22) is threadedly connected to a threaded end (29), and the end of the threaded end (29) away from the hollow top column (22) is connected to a drawing pen (28), the pen tip of the drawing pen (28) is against the outer wall of the coordinate paper (5), and the heights of the three drawing pens (28) are the same; Each collecting frame (24) is fixedly connected to a side frame (23) on one side, the side frame (23) is connected to the collecting frame (24), the top end of the side frame (23) is fixedly connected to a solution delivery tube (21) via a connecting block (27), and the solution delivery tube (21) is connected to the inside of the side frame (23); The driving mechanism (9) includes a frame (91) fixed to the top of the base (1) by bolts, a motor (92) is fixedly installed on the upper end of the frame (91), an output shaft end of the motor (92) is fixedly connected to a transmission gear (93), the transmission gear (93) is meshed with the gear ring (3), the top of the transmission gear (93) is fixedly connected to a large bevel gear (94), the upper side of the large bevel gear (94) is meshed with a small bevel gear (97), one end of the small bevel gear (97) is fixedly connected to a turntable (99), a right-angle frame (95) is fixedly connected to the side wall of the frame (91), the outer wall of the right-angle frame (95) is fixedly connected to a connecting shaft (96), the small bevel gear (97) is rotatably connected to the connecting shaft (96), and the outer wall of the turntable (99) is rotatably connected to a connecting rod (98) via an axis. The material holding assembly (72) includes a supporting plate (721) fixed to the outer wall of the mounting frame (6), a guide plate (722) fixed to the upper end of the supporting plate (721), two rotating blocks (726) symmetrically fixed to the outer wall of the guide plate (722), a bidirectional screw rod (723) rotatably connected between the two rotating blocks (726), two side plates (724) symmetrically arranged on the upper side of the supporting plate (721), the side plates (724) being clamped to the outer side of the guide plate (722), the bidirectional screw rod (723) being threadedly passed through the inside of the side plates (724), and a telescopic plate (725) being sandwiched between the two side plates (724); The telescopic plate (725) includes an outer frame (7251), two inner plates (7253) are slidably provided inside the outer frame (7251), a partition (7252) is fixedly connected inside the outer frame (7251) located between the two inner plates (7253), a plurality of transverse shafts (7254) are fixedly connected inside the partition (7252), the transverse shafts (7254) extend into the interior of the inner plates (7253) and are slidably connected thereto, and a return spring (7255) is sleeved on the outer side of the transverse shaft (7254); The feeding assembly (71) includes a connecting plate (711) fixedly connected to the side wall of the mounting frame (6), the upper end of the connecting plate (711) is fixedly connected to a column (712), the top end of the column (712) is rotatably connected to a swing plate (713), the bottom of the swing plate (713) is installed with an electric hydraulic device (716), the bottom end of the hydraulic rod on the electric hydraulic device (716) is fixedly connected to a star frame (715), three column cylinders (717) are fixedly connected in a ring array inside the star frame (715), and the top end of the mounting frame (6) is fixedly connected to a limit plate (714).

2. A soil infiltration test device according to claim 1, characterized in that: The infiltration experiment component (82) includes an upper solution frame (821) fixed on the mounting frame (6), the inner circle of the upper solution frame (821) is fixed with a lap tube (824), the upper side of the lap tube (824) is provided with a lower solution cavity (822), the top of the upper solution frame (821) is higher than the top of the lap tube (824), the lap tube (824) located below the lower solution cavity (822) is provided with a star-shaped cavity (823) for placing the star frame (715), and the lap tube (824) located below the star-shaped cavity (823) is provided with three tube cavities (825) for inserting the column tube (717).

3. A soil infiltration test device according to claim 2, characterized in that: The bottom end of the overlapping tube (824) on the lower side of each lumen (825) is fixedly connected to a threaded sleeve (828), the outer wall of the threaded sleeve (828) is threadedly connected to a conical tube (827), the upper end of the threaded sleeve (828) is provided with a partition net (826), and the lower end of the conical tube (827) is fixedly connected to the upper end of the solution delivery tube (21).

4. A soil infiltration test device according to claim 3, characterized in that: The solution delivery component (81) includes a solution box (811) fixedly connected to the mounting frame (6), a piston cylinder (813) is fixedly connected to the bottom of the solution box (811), a transmission piston (814) is provided in a sliding sleeve inside the piston cylinder (813), a built-in rod (815) is fixedly connected to the inner side of the transmission piston (814), and the connecting rod (98) is rotatably connected to the built-in rod (815), and a solution inlet pipe (816) and a solution discharge pipe (812) are fixedly connected to the upper side of the piston cylinder (813), and one-way valves are provided at one end of the solution inlet pipe (816) and the solution discharge pipe (812) close to the piston cylinder (813), and the solution discharge pipe (812) is fixedly passed through the outer wall of the solution box (811), and the bottom end of the solution discharge pipe (812) is located above the upper solution frame (821).

5. A method for using the soil infiltration test device according to claim 4, characterized in that: The following steps are involved: S1. Place the prepared test soil block on the supporting plate (721), rotate the bidirectional screw (723) to move the two side plates (724) closer to each other, and manually push the telescopic plate (725), and use the guide plate (722), the side plate (724) and the telescopic plate (725) to limit the square soil block to a certain extent; S2. Next, the swing plate (713) is rotated at the top of the column (712) so that the star frame (715) is located above the test soil block. Then, the electric hydraulic device (716) is started to push the star frame (715) downward through the electric hydraulic device (716) so that the three column barrels (717) are inserted into the test soil block, so that the soil is filled in the column barrels (717) to form a soil column, and at this time, the soil column is tightly attached to the inner wall of the column barrel (717); S3. After the soil column is collected, the star frame (715) is lifted by the electric hydraulic device (716), and the swing plate (713) is rotated to fit with the limit plate (714). Then, the star frame (715) is pushed down by the electric hydraulic device (716), and the star frame (715) is overlapped inside the star cavity (823). The column tube (717) is inserted into the tube cavity (825) so that the bottom end of the column tube (717) contacts the partition (826); S4. When the infiltration test is performed, the motor (92) is started, and the solution is injected into the lower solution chamber (822) to fill the lower solution chamber (822). When the motor (92) is started, the motor (92) drives the transmission gear (93) to rotate through its output shaft, and the transmission gear (93) drives the rotating drum (4) to rotate slowly through the gear ring (3). The transmission gear (93) can also drive the large bevel gear (94) to rotate, and the large bevel gear (94) drives the turntable (99) to rotate through the small bevel gear (97). The rotating turntable (99) pushes and pulls the connecting rod (98) back and forth, so that the connecting rod (98) pushes the transmission piston (814) through the built-in rod (815). ) is pushed and pulled back and forth, and when the transmission piston (814) moves downward, the one-way valve at the end of the solution inlet pipe (816) is opened, and the one-way valve at the end of the solution discharge pipe (812) is closed, so that the solution inside the solution box (811) is pumped into the interior of the piston cylinder (813); and when the transmission piston (814) moves upward, the one-way valve at the end of the solution inlet pipe (816) is closed, and the one-way valve at the end of the solution discharge pipe (812) is opened, so that the solution inside the piston cylinder (813) can be transported to the interior of the upper solution frame (821) through the solution discharge pipe (812), and flows into the interior of the lower solution cavity (822) through the upper solution frame (821), thereby continuously transporting the solution to the interior of the lower solution cavity (822); S5. After the solution in the lower solution cavity (822) permeates through the soil column inside the three columns (717), it flows into the three solution delivery pipes (21) through the three cones (827) respectively, and then flows into the inside of the side frame (23) through the solution delivery pipe (21). Since the side frame (23) is connected to the collection frame (24), it will eventually be collected at the bottom of the collection frame (24) and the side frame (23). Initially, the floating seat (25) is overlapped with the upper end of the support block (26), and the bottom of the floating seat (25) is pre-stored with the solution in contact with the bottom surface of the floating seat (25); S6. As the solution inside the side frame (23) is continuously added, the liquid level of the solution inside the collection frame (24) rises, driving the floating seat (25) to move upward. The floating seat (25) drives the drawing pen (28) to move upward through the hollow top column (22). As the rotating drum (4) slowly rotates, three lines can be drawn on the coordinate paper (5) through the three drawing pens (28). In this way, the infiltration of the soil can be observed. In order to facilitate observation, the colors of the three drawing pens (28) are different.

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