An indoor test simulation device for frozen soil erosion at a frozen soil-structure surface

Abstract

The present application relates to geotechnical engineering freezing technical field, disclose a kind of frozen soil-structure surface place frozen soil erosion indoor test simulation device, including installation unit, transmission unit and cleaning unit: installation unit includes experiment table, cavity is opened in experiment table, support leg is fixedly installed around the bottom of experiment table.This application, when the driving assembly is operated, can also control the circular mounting plate to move, let it leave the middle of experiment table, ensure that frozen soil falls, when frozen soil falls, the driving assembly resets at this time, so that the first inner guard plate and the second inner guard plate close, can be watered inwards, at this time, the driving assembly is started again, so that the first inner guard plate and the second inner guard plate can reciprocating rotation slightly, so as to make the water to the first inner guard plate and the second inner guard plate inner wall shake cleaning, repeat several times in this way, ensure that the frozen soil residue impurities on the first inner guard plate and the second inner guard plate inner wall can be cleaned thoroughly.

Description

Technical Field

[0001] This invention belongs to the field of geotechnical engineering freezing technology, specifically, it relates to an indoor test simulation device for frozen soil erosion at a frozen soil-structural surface. Background Technology

[0002] In cold region engineering construction, a large number of infrastructures such as roads, bridges, and building foundations interact with permafrost. Under the influence of factors such as temperature changes and moisture migration, permafrost often erodes at the structural surfaces in contact with structures, which can seriously affect the stability and durability of engineering structures. Therefore, some existing experiments are specifically designed to study permafrost.

[0003] However, existing methods often make it difficult to remove frozen soil after the durability and erosion tests are completed, as the soil is placed in experimental chambers or other equipment. Furthermore, the frozen soil undergoes a freeze-thaw cycle during the test, which can easily cause stains on the inner walls of the testing chamber. As a result, the frozen soil needs to be removed for a period of time before it can be cleaned, because it is initially cold when placed in the experimental chamber, making it inconvenient for the experimenters to clean it.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0006] An indoor simulation device for frozen soil erosion at a frozen soil-structural surface includes an installation unit, a transmission unit, and a cleaning unit.

[0007] The installation unit includes an experimental platform with a cavity inside. Support legs are fixedly installed around the bottom of the platform, symmetrically arranged in pairs. A side panel is fixedly installed on top of the platform, and a water tank is fixedly connected to one side wall of the side panel. A spray head is installed on one side of the water tank, movably penetrating through the side panel. The experimental platform also includes a first outer protective plate and a second outer protective plate. A semi-circular insertion slot is formed on one side of the first outer protective plate, and a semi-circular insertion plate is fixedly connected to one side wall of the second outer protective plate. The slot and the semi-circular plug-in plate fit together. The first outer protective plate is fixedly connected to the inner cavity of the first outer protective plate. The second outer protective plate is fixedly connected to the second inner protective plate. The side wall of the first inner protective plate is provided with a rectangular plug-in slot. The side wall of the second inner protective plate is fixedly connected to a rectangular plug-in plate. The rectangular plug-in slot and the rectangular plug-in plate fit together. The inner cavities of the first outer protective plate and the second outer protective plate are provided with heating and cooling components and detection components. Two symmetrical rectangular slots are opened above the experimental platform. A slot is also opened in the middle of the experimental platform.

[0008] The cleaning unit includes a circular mounting plate, which is located in the middle of the inner cavity of the experimental table. A slot is provided on the top of the circular mounting plate, and a first and a second insertion plate are fitted into the slot. Placement rods are fixedly connected to the top of the first and second insertion plates, respectively. The other ends of the two placement rods are fixedly connected to the bottom of the first and second outer protective plates, respectively. The two placement rods are movably inserted through the slot. A circular sliding groove is provided on the side wall of the circular mounting plate. Two guide sliders are slidably installed in the inner cavity of the circular sliding groove. The two guide sliders are symmetrical to each other. Limiting rods are movably inserted through the two guide sliders. The two limiting rods are symmetrical to each other. The two ends of the two limiting rods are fixedly connected to the opposite side walls of the inner cavity of the experimental table, respectively.

[0009] The transmission unit includes a drive assembly, which is used to drive the first outer protective plate and the second outer protective plate to move. The drive assembly can also be used to drive the first outer protective plate and the second outer protective plate to rotate.

[0010] In a preferred embodiment of the present invention, the driving assembly includes a servo motor disposed on the inner wall of the experimental platform. A first threaded rod is fixedly connected to the output end of the servo motor, and a second threaded rod is fixedly connected to the end of the first threaded rod away from the servo motor. The second threaded rod is rotatably connected to the inner wall of the experimental platform. A first threaded sleeve is engaged on the first threaded rod, and a second threaded sleeve is engaged on the second threaded rod. A first connecting rod and a second connecting rod are fixedly connected to the first threaded sleeve and the second threaded sleeve, respectively.

[0011] In a preferred embodiment of the present invention, a sliding rod is fixedly connected to the inner cavity of the experimental platform. The sliding rod is parallel to the first threaded rod and the second threaded rod, respectively. A first sliding sleeve and a second sliding sleeve are slidably disposed on the sliding rod, and a first connecting rod and a second connecting rod are fixedly connected above the first sliding sleeve and the second sliding sleeve, respectively.

[0012] In a preferred embodiment of the present invention, a first sliding mechanism is connected above the two first connecting rods and the second connecting rod respectively. The first sliding mechanism includes a first semi-circular slide groove and a second semi-circular slide groove. The first semi-circular slide groove and the second semi-circular slide groove are respectively formed on the first outer protective plate and the second outer protective plate. The first semi-circular slide groove and the second semi-circular slide groove fit together to form a circle. Two first sliders and a second slider are slidably installed in the inner cavity of the first semi-circular slide groove and the second semi-circular slide groove respectively.

[0013] In a preferred embodiment of the present invention, the bottoms of the two first sliders and the second slider are respectively fixedly connected with a first connecting rod and a second connecting rod.

[0014] In a preferred embodiment of the present invention, the inner cavity of the experimental platform is further provided with two irregularly shaped sliding rods. The opposite ends of the two irregularly shaped sliding rods are fixedly connected to guide sliding rods. The opposite ends of the two guide sliding rods are respectively fixedly connected to the opposite side wall of the experimental platform. The two irregularly shaped sliding rods and the guide sliding rods are symmetrically staggered. A movable sleeve is slidably installed on each of the two irregularly shaped sliding rods. The two movable sleeves are symmetrical to each other.

[0015] In a preferred embodiment of the present invention, telescopic rods are respectively provided on opposite sides of the two movable sleeves, and the other ends of the telescopic rods are respectively provided on the first threaded sleeve and the second sliding sleeve. A second sliding mechanism is provided on opposite sides of the two movable sleeves.

[0016] In a preferred embodiment of the present invention, the second sliding mechanism includes two movable slide grooves, which are respectively opened on the opposite sidewalls of the first and second plug-in plates. Movable sliders are slidably installed in the inner cavities of the two movable slide grooves. Connecting rods are hinged on the two movable sliders, and the opposite ends of the connecting rods are respectively hinged on the movable sleeves.

[0017] In a preferred embodiment of the present invention, an L-shaped mounting plate is fixedly connected to the bottom of the second threaded sleeve, a wedge-shaped block is provided on one side wall of the L-shaped mounting plate, a slide rail is provided at the bottom of the wedge-shaped block, the slide rail is located at the bottom of the inner cavity of the experimental table, a fixing plate is fixedly connected above the wedge-shaped block, a movable rod is movably connected to one side wall of the fixing plate, and the other end of the movable rod is movably connected to the guide slider.

[0018] In a preferred embodiment of the present invention, the upper and lower side walls of the experimental platform are provided with discharge slots, and a guide sleeve is fixedly connected to the inner cavity of the experimental platform near the discharge slot of the support leg.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] This invention controls the opening of the first and second inner protective plates via a drive component, allowing frozen soil to fall in. Simultaneously, the drive component also controls the movement of a circular mounting plate away from the center of the experimental platform, ensuring the frozen soil can fall. Once the frozen soil has fallen, the drive component resets, closing the first and second inner protective plates and allowing water to be injected. Re-activating the drive component causes the first and second inner protective plates to rotate slightly, allowing water to agitate and clean their inner walls. This process is repeated multiple times to ensure that any remaining frozen soil and impurities on the inner walls of the first and second inner protective plates are thoroughly cleaned.

[0021] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0022] In the attached diagram:

[0023] Figure 1 A three-dimensional structural schematic diagram of an indoor experimental simulation device for permafrost erosion at a permafrost-structural surface;

[0024] Figure 2 A schematic cross-sectional view of the test bench of an indoor experimental simulation device for permafrost erosion at a permafrost-structural surface.

[0025] Figure 3 This is a side view of the experimental platform of an indoor experimental simulation device for permafrost erosion at a permafrost-structural surface.

[0026] Figure 4 A schematic diagram of the experimental platform of an indoor experimental simulation device for permafrost erosion at a permafrost-structural surface, viewed from below.

[0027] Figure 5 A schematic diagram of the explosion structure inside the experimental platform of an indoor test simulation device for permafrost erosion at a permafrost-structural surface.

[0028] Figure 6 A schematic diagram of the internal structure of the experimental platform of an indoor experimental simulation device for permafrost erosion at a permafrost-structural surface.

[0029] Figure 7 An indoor experimental simulation device for permafrost erosion at a permafrost-structural surface. Figure 6 Enlarged structural diagram at point A in the middle;

[0030] Figure 8 This is a schematic diagram of the first and second inner protective plates of an indoor test simulation device for permafrost erosion at a permafrost-structural surface.

[0031] Figure 9 This is a schematic diagram of a circular mounting plate structure for an indoor experimental simulation device for permafrost erosion at a permafrost-structural surface.

[0032] In the picture:

[0033] 100. Installation unit; 101. Experimental table; 1011. Support leg; 1012. Rectangular slot; 1013. Side plate; 1014. Water tank; 1015. Spray head; 1016. Discharge chute; 1017. Guide sleeve; 102. First outer protective plate; 1021. Second outer protective plate; 1022. Semicircular insertion slot; 1023. Semicircular insertion plate; 1024. First semicircular slide groove; 1025. Second semicircular slide groove; 1026. First slider; 1027. Second slider; 103. First inner protective plate; 1031. Second inner protective plate; 1032. Rectangular insertion slot; 1033. Rectangular insertion plate;

[0034] 200. Transmission unit; 201. Servo motor; 2011. First threaded rod; 2012. Second threaded rod; 2013. First threaded sleeve; 2014. Second threaded sleeve; 2015. First connecting rod; 2016. Second connecting rod; 202. Sliding rod; 2021. First sliding sleeve; 2022. Second sliding sleeve; 203. Irregularly shaped sliding rod; 2031. Guide sliding rod; 2032. Moving sleeve; 2033. Telescopic rod; 2034. Connecting rod; 2035. First insertion plate; 2036. Moving slide; 2037. Moving slider; 2038. Second insertion plate; 2039. Placement rod;

[0035] 300. Cleaning unit; 301. Circular mounting plate; 3011. Circular slide groove; 3012. Guide slider; 3013. Limiting rod; 3014. Movable rod; 3015. Insertion groove; 302. L-shaped mounting plate; 3021. Wedge block; 3022. Fixing plate; 3023. Slide rail. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0037] Example 1:

[0038] like Figures 1 to 9As shown, an indoor simulation device for permafrost erosion at a permafrost-structural surface includes an installation unit 100, a transmission unit 200, and a cleaning unit 300. The installation unit 100 includes an experimental platform 101 with a cavity inside. Support legs 1011 are fixedly installed around the bottom of the experimental platform 101, with the four support legs 1011 arranged symmetrically in pairs. A side plate 1013 is also fixedly installed on the top of the experimental platform 101. A water tank 1014 is fixedly connected to one side wall of the side plate 1013. A spray head 1015 is provided on one side of the water tank 1014 and moves through the side plate 1013. The experimental platform 101 is also provided with a first outer protective plate 102 and a second outer protective plate 1021. A semi-circular insertion slot 1022 is provided on one side of the first outer protective plate 102. A semi-circular insertion plate 1023 is fixedly connected to one side wall of the second outer protective plate 1021. The semi-circular insertion slot 1022 and the semi-circular insertion plate 1023 fit together. A first inner protective plate 103 is fixedly connected to the inner cavity of the first outer protective plate 102. A second inner protective plate 1031 is fixedly connected to the second outer protective plate 1021. A rectangular insertion slot 1032 is provided on the side wall of the first inner protective plate 103. A rectangular insertion plate 1033 is fixedly connected to the side wall of the second inner protective plate 1031. The rectangular insertion slot 1032 and the rectangular insertion plate 1033 fit together. Both the inner cavities of the first outer protective plate 102 and the second outer protective plate 1021 are provided with... The experimental platform 101 includes heating and cooling components and detection components. Two symmetrical rectangular slots 1012 are provided above the platform 101, and a slot is also provided in the middle of the platform 101. The cleaning unit 300 includes a circular mounting plate 301, which is located in the middle of the inner cavity of the platform 101. A insertion slot 3015 is provided above the circular mounting plate 301, into which a first insertion plate 2035 and a second insertion plate 2038 are fitted. Placement rods 2039 are fixedly connected to the top of both the first and second insertion plates 2035 and 2038, respectively. The other ends of the two placement rods 2039 are fixedly connected to the bottom of the first outer protective plate 102 and the bottom of the second outer protective plate 1021, respectively. Rods 2039 are movably inserted through the slots. A circular groove 3011 is provided on the side wall of the circular mounting plate 301. Two guide sliders 3012 are slidably installed in the inner cavity of the circular groove 3011. The two guide sliders 3012 are symmetrical to each other. Limiting rods 3013 are movably inserted through each of the two guide sliders 3012. The two limiting rods 3013 are symmetrical to each other. The two ends of the two limiting rods 3013 are respectively fixedly connected to the opposite side walls of the inner cavity of the experimental platform 101. The transmission unit 200 includes a drive assembly. The drive assembly is used to drive the first outer protective plate 102 and the second outer protective plate 1021 to move. The drive assembly can also be used to drive the first outer protective plate 102 and the second outer protective plate 1021 to rotate.The drive assembly controls the opening of the first inner protective plate 103 and the second inner protective plate 1031, allowing the frozen soil to fall in. Simultaneously, the drive assembly also controls the movement of the circular mounting plate 301, moving it away from the center of the experimental platform 101 to ensure the frozen soil falls. When the frozen soil falls, the drive assembly resets, closing the first inner protective plate 103 and the second inner protective plate 1031, allowing water to be injected. Re-activating the drive assembly causes the first inner protective plate 103 and the second inner protective plate 1031 to rotate slightly, allowing water to agitate and clean their inner walls. This process is repeated multiple times to ensure that any remaining frozen soil and impurities on the inner walls of the first inner protective plate 103 and the second inner protective plate 1031 are thoroughly cleaned.

[0039] like Figure 2 and Figures 5 to 7 As shown, in a specific embodiment, the drive assembly includes a servo motor 201, which is disposed on the inner wall of the experimental platform 101. A first threaded rod 2011 is fixedly connected to the output end of the servo motor 201. A second threaded rod 2012 is fixedly connected to the end of the first threaded rod 2011 away from the servo motor 201. The second threaded rod 2012 is rotatably connected to the inner wall of the experimental platform 101. A first threaded sleeve 2013 is engaged with the first threaded rod 2011, and a second threaded sleeve 2014 is engaged with the second threaded rod 2012. A first connecting rod 2015 and a second connecting rod 2016 are fixedly connected to the first threaded sleeve 2013 and the second threaded sleeve 2014, respectively. In this configuration, the installation position and components of the drive assembly are defined.

[0040] like Figure 2 and Figures 5 to 7 As shown, furthermore, a sliding rod 202 is fixedly connected to the inner cavity of the experimental platform 101. The sliding rod 202 is parallel to the first threaded rod 2011 and the second threaded rod 2012, respectively. A first sliding sleeve 2021 and a second sliding sleeve 2022 are slidably disposed on the sliding rod 202. A first connecting rod 2015 and a second connecting rod 2016 are fixedly connected above the first sliding sleeve 2021 and the second sliding sleeve 2022, respectively. In this configuration, the installation positions of the first connecting rod 2015 and the second connecting rod 2016 are determined.

[0041] like Figures 1 to 6As shown, furthermore, a first sliding mechanism is connected above the two first connecting rods 2015 and the second connecting rod 2016 respectively. The first sliding mechanism includes a first semi-circular slide groove 1024 and a second semi-circular slide groove 1025. The first semi-circular slide groove 1024 and the second semi-circular slide groove 1025 are respectively formed on the first outer protective plate 102 and the second outer protective plate 1021. The first semi-circular slide groove 1024 and the second semi-circular slide groove 1025 fit together to form a circle. Two first sliders 1026 and the second slider 1027 are slidably installed in the inner cavity of the first semi-circular slide groove 1024 and the second semi-circular slide groove 1025 respectively. In this configuration, the installation position and components of the first sliding mechanism are determined.

[0042] like Figures 1 to 6 As shown, furthermore, the bottoms of the two first sliders 1026 and the second slider 1027 are respectively fixedly connected to a first connecting rod 2015 and a second connecting rod 2016. In this configuration, it is ensured that the first connecting rod 2015 and the second connecting rod 2016 can drive the first slider 1026 and the second slider 1027 to move.

[0043] Example 2:

[0044] The difference between Embodiment 1 and this embodiment is that: Figure 2 and Figures 5 to 7 As shown, the inner cavity of the experimental platform 101 of a simulated indoor test for permafrost erosion at a permafrost-structural surface is also equipped with two irregularly shaped sliding rods 203. Each of the two irregularly shaped sliding rods 203 has a guide sliding rod 2031 fixedly connected to its opposite end. The opposite ends of the two guide sliding rods 2031 are respectively fixedly connected to opposite side walls of the experimental platform 101. The two irregularly shaped sliding rods 203 and the guide sliding rods 2031 are symmetrically staggered. A movable sleeve 2032 is slidably installed on each of the two irregularly shaped sliding rods 203, and the two movable sleeves 2032 are symmetrical to each other. In this setup, the installation positions of the movable sleeves 2032 and the irregularly shaped sliding rods 203 are determined.

[0045] like Figure 2 and Figures 5 to 7 As shown in the specific embodiment, telescopic rods 2033 are respectively provided on opposite sides of the two movable sleeves 2032, and the other ends of the telescopic rods 2033 are respectively provided on the first threaded sleeve 2013 and the second sliding sleeve 2022. A second sliding mechanism is provided on the opposite side of each of the two movable sleeves 2032. In this configuration, it is ensured that the movable sleeves 2032 can be moved when the first threaded sleeve 2013 and the second sliding sleeve 2022 move.

[0046] like Figure 2 and Figures 5 to 7As shown, the second sliding mechanism further includes two movable slide grooves 2036, which are respectively formed on the opposite sidewalls of the first insertion plate 2035 and the second insertion plate 2038. Movable sliders 2037 are slidably mounted inside the cavities of both slide grooves 2036. Connecting rods 2034 are hinged to the two movable sliders 2037, and opposite ends of the connecting rods 2034 are respectively hinged to the movable sleeves 2032. In this configuration, the installation position and components of the second sliding mechanism are determined.

[0047] Example 3:

[0048] The difference between Embodiment 2 and this embodiment is that: Figure 2 and Figures 5 to 6 As shown, in a simulated indoor test device for permafrost erosion at a permafrost-structural surface, an L-shaped mounting plate 302 is fixedly connected to the bottom of the second threaded sleeve 2014. A wedge-shaped block 3021 is provided on one side wall of the L-shaped mounting plate 302, and a slide rail 3023 is provided at the bottom of the wedge-shaped block 3021. The slide rail 3023 is located at the bottom of the inner cavity of the experimental platform 101. A fixing plate 3022 is fixedly connected above the wedge-shaped block 3021, and a movable rod 3014 is movably connected to one side wall of the fixing plate 3022. The other end of the movable rod 3014 is movably connected to the guide slider 3012. In this setup, the installation position of the wedge-shaped block 3021 is determined, ensuring that the wedge-shaped block 3021 can move horizontally.

[0049] like Figure 4 As shown in the specific embodiment, the upper and lower side walls of the experimental platform 101 are provided with discharge slots 1016, and a guide sleeve 1017 is fixedly connected to the inner cavity of the experimental platform 101 near the discharge slot 1016 of the support leg 1011. In this configuration, the opening position of the discharge slot 1016 is determined.

[0050] The implementation principle of the indoor test simulation device for frozen soil erosion at the frozen soil-structural surface of the present invention is as follows:

[0051] First, the experimenters placed frozen soil inside the first inner protective plate 103 and the second inner protective plate 1031. The frozen soil was subjected to freeze-thaw cycle transformation by heating and cooling components. At the same time, water was sprayed onto the frozen soil undergoing freeze-thaw cycle transformation through spray head 1015 to simulate groundwater. Meanwhile, the experimenters were able to observe the erosion changes of the frozen soil under the sprayed water and temperature changes through detection components (this is the prior art).

[0052] Upon completion of the test, the experimenter activates the servo motor 201. The servo motor 201 drives the first threaded rod 2011 to rotate. When the first threaded rod 2011 rotates, it drives the second threaded rod 2012 to rotate. When the first threaded rod 2011 and the second threaded rod 2012 rotate, they drive the first threaded sleeve 2013 and the second threaded sleeve 2014 through the first connecting rod 2015, the second connecting rod 2016, the first semi-circular slide groove 1024, and the second semi-circular slide groove 1025. 25. With the assistance of the first slider 1026, the second slider 1027, the first outer protective plate 102, the second outer protective plate 1021, the sliding rod 202, the first sliding sleeve 2021, and the second sliding sleeve 2022, the first outer protective plate 102 and the second outer protective plate 1021 can move horizontally, thus allowing the first outer protective plate 102 and the second outer protective plate 1021 to open. When the first outer protective plate 102 and the second outer protective plate 1021 open, they can drive the first inner protective plate 103 and the second inner protective plate 1031 to open respectively, allowing the frozen soil to fall off.

[0053] Simultaneously, when the first threaded sleeve 2013 and the second sliding sleeve 2022 move horizontally, the moving sleeve 2032 can be driven to move with the assistance of the irregular sliding rod 203 and the guide sliding rod 2031 via the telescopic rod 2033. The moving sleeve 2032 can move back and forth on the irregular sliding rod 203. When the moving sleeve 2032 moves back and forth, the first plug plate 2035 and the second plug plate 2038 can swing with the assistance of the moving slide groove 2036 and the moving slider 2037 via the hinged connecting rod 2034. The circular mounting plate 301 can rotate slightly back and forth with the assistance of the circular slide groove 3011 and the guide slider 3012.

[0054] When the first connector plate 2035 and the second connector plate 2038 reciprocate, they can slightly reciprocate during the separation process of the first outer protective plate 102 and the second outer protective plate 1021 via the placement rod 2039. When the frozen soil falls, the first inner protective plate 103 and the second inner protective plate 1031 installed inside the first outer protective plate 102 and the second outer protective plate 1021 can slightly rotate. Because the water sprayed into the first inner protective plate 103 and the second inner protective plate 1031 by the spray head 1015 will be collected, and because... Once a certain level is reached, the first inner protective plate 103 and the second inner protective plate 1031 are classified. When they rotate slightly, the water does not fall because it is blocked by the semi-circular plug plate 1023 and the rectangular plug plate 1033. However, since the first inner protective plate 103 and the second inner protective plate 1031 are rotating, the water can be shaken to clean the inner walls of the first inner protective plate 103 and the second inner protective plate 1031, so that the frozen soil and other impurities adhering to the inner walls of the first inner protective plate 103 and the second inner protective plate 1031 can be removed.

[0055] Simultaneously, when the second threaded sleeve 2014 moves to a certain position, it can push the wedge block 3021 to move horizontally with the assistance of the slide rail 3023 through the L-shaped mounting plate 302. When the wedge block 3021 moves horizontally, it can drive the fixed plate 3022 to move. When the fixed plate 3022 moves, it can drive the guide slider 3012 through the movable rod 3014 to drive the circular mounting plate 301 to move horizontally, so that the circular mounting plate 301 leaves the discharge slots 1016 opened at the top and bottom of the experimental table 101, so that the frozen soil and the water used to clean the first inner protective plate 103 and the second inner protective plate 1031 can fall out. The first servo motor 2 When 01 is started, the frozen soil is allowed to fall off. Then, the servo motor 201 drives the first threaded rod 2011 and the second threaded rod 2012 to run in opposite directions, so that the first inner protective plate 103 and the second inner protective plate 1031 can be closed. At this time, the spray head 1015 injects water into the first inner protective plate 103 and the second inner protective plate 1031. After the water injection is completed, the servo motor 201 is started again, so that the injected water can slosh inside the first inner protective plate 103 and the second inner protective plate 1031 to clean the inner walls of the first inner protective plate 103 and the second inner protective plate 1031. This step is repeated to ensure that the inner walls of the first inner protective plate 103 and the second inner protective plate 1031 are cleaned.

Claims

1. A laboratory simulation device for frozen soil erosion at a frozen soil-structural surface, characterized in that, Includes an installation unit (100), a transmission unit (200), and a cleaning unit (300): The installation unit (100) includes an experimental table (101), which has a cavity. Support legs (1011) are fixedly installed around the bottom of the experimental table (101), with the four support legs (1011) symmetrically arranged in pairs. A side plate (1013) is also fixedly installed on the top of the experimental table (101). A water tank (1014) is fixedly connected to one side wall of the side plate (1013). A spray head (1015) is provided on one side of the water tank (1014), and the spray head (1015) movably passes through the side plate (1013). The experimental table (101) also has a first outer protective plate (102) and a second outer protective plate (1021). A semi-circular insertion slot (1022) is provided on one side of the first outer protective plate (102), and a semi-circular insertion plate (1021) is fixedly connected to one side wall of the second outer protective plate (1021). 023), the semi-circular insertion slot (1022) and the semi-circular insertion plate (1023) fit together, the first outer protective plate (102) is fixedly connected to the inner cavity of the first inner protective plate (103), the second outer protective plate (1021) is fixedly connected to the second inner protective plate (1031), the side wall of the first inner protective plate (103) is provided with a rectangular insertion slot (1032), the side wall of the second inner protective plate (1031) is fixedly connected to a rectangular insertion plate (1033), the rectangular insertion slot (1032) and the rectangular insertion plate (1033) fit together, the inner cavities of the first outer protective plate (102) and the second outer protective plate (1021) are both provided with heating and cooling components and detection components, two symmetrical rectangular slots (1012) are opened above the experimental platform (101), and a slot is also opened in the middle of the experimental platform (101); The cleaning unit (300) includes a circular mounting plate (301), which is disposed in the middle of the inner cavity of the experimental table (101). A insertion slot (3015) is provided on the top of the circular mounting plate (301), and a first insertion plate (2035) and a second insertion plate (2038) are inserted into the insertion slot (3015). Placement rods (2039) are fixedly connected to the top of the first insertion plate (2035) and the second insertion plate (2038), respectively. The other ends of the two placement rods (2039) are fixedly connected to the bottom of the first outer protective plate (102) and the second outer protective plate (2038). At the bottom of the outer protective plate (1021), two placement rods (2039) are respectively movably inserted through the slot. The side wall of the circular mounting plate (301) is provided with a circular sliding groove (3011). Two guide sliders (3012) are slidably installed in the inner cavity of the circular sliding groove (3011). The two guide sliders (3012) are symmetrical to each other. Limiting rods (3013) are movably inserted through both guide sliders (3012). The two limiting rods (3013) are symmetrical to each other. The two ends of the two limiting rods (3013) are respectively fixedly connected to the opposite side walls of the inner cavity of the experimental table (101). The transmission unit (200) includes a drive assembly for driving the first outer protective plate (102) and the second outer protective plate (1021) to move, and the drive assembly can also drive the first outer protective plate (102) and the second outer protective plate (1021) to rotate. The drive assembly includes a servo motor (201), which is disposed on the inner wall of the experimental platform (101). A first threaded rod (2011) is fixedly connected to the output end of the servo motor (201). A second threaded rod (2012) is fixedly connected to the end of the first threaded rod (2011) away from the servo motor (201). The second threaded rod (2012) is rotatably connected to the inner wall of the experimental platform (101). A first threaded sleeve (2013) is engaged on the first threaded rod (2011), and a second threaded sleeve (2014) is engaged on the second threaded rod (2012). A first connecting rod (2015) and a second connecting rod (2016) are fixedly connected to the first threaded sleeve (2013) and the second threaded sleeve (2014), respectively. The inner cavity of the experimental table (101) is also fixedly connected to a sliding rod (202). The sliding rod (202) is parallel to the first threaded rod (2011) and the second threaded rod (2012) respectively. A first sliding sleeve (2021) and a second sliding sleeve (2022) are slidably arranged on the sliding rod (202). A first connecting rod (2015) and a second connecting rod (2016) are fixedly connected above the first sliding sleeve (2021) and the second sliding sleeve (2022) respectively. A first sliding mechanism is connected above the two first connecting rods (2015) and the second connecting rod (2016). The first sliding mechanism includes a first semi-circular slide groove (1024) and a second semi-circular slide groove (1025). The first semi-circular slide groove (1024) and the second semi-circular slide groove (1025) are respectively opened on the first outer protective plate (102) and the second outer protective plate (1021). The first semi-circular slide groove (1024) and the second semi-circular slide groove (1025) fit together to form a circle. Two first sliders (1026) and a second slider (1027) are slidably installed in the inner cavity of the first semi-circular slide groove (1024) and the second semi-circular slide groove (1025).

2. The indoor experimental simulation device for permafrost erosion at a permafrost-structural surface according to claim 1, characterized in that, The bottoms of the two first sliders (1026) and the second slider (1027) are respectively fixedly connected to a first connecting rod (2015) and a second connecting rod (2016).

3. The indoor experimental simulation device for permafrost erosion at a permafrost-structural surface according to claim 2, characterized in that, The inner cavity of the experimental platform (101) is also provided with two irregular sliding rods (203). The opposite ends of the two irregular sliding rods (203) are fixedly connected to guide sliding rods (2031). The opposite ends of the two guide sliding rods (2031) are respectively fixedly connected to the opposite side wall of the experimental platform (101). The two irregular sliding rods (203) and guide sliding rods (2031) are symmetrically interleaved. The two irregular sliding rods (203) are slidably installed with movable sleeves (2032). The two movable sleeves (2032) are symmetrical to each other.

4. The indoor simulation device for frozen soil erosion at a structural surface according to claim 3, characterized in that, The two movable sleeves (2032) are provided with telescopic rods (2033) on opposite sides respectively, and the other end of the telescopic rods (2033) is provided on the first threaded sleeve (2013) and the second sliding sleeve (2022) respectively. The two movable sleeves (2032) are provided with a second sliding mechanism on opposite sides.

5. The indoor simulation device for frozen soil erosion at a structural surface according to claim 4, characterized in that, The second sliding mechanism includes two movable slides (2036), which are respectively opened on the opposite sidewalls of the first plug plate (2035) and the second plug plate (2038). Movable sliders (2037) are slidably installed in the inner cavity of each of the two movable slides (2036). Connecting rods (2034) are hinged on the two movable sliders (2037), and the opposite ends of the connecting rods (2034) are respectively hinged on the movable sleeve (2032).

6. The indoor simulation device for frozen soil erosion at a structural surface according to claim 5, characterized in that, The bottom of the second threaded sleeve (2014) is fixedly connected to an L-shaped mounting plate (302). A wedge block (3021) is provided on one side wall of the L-shaped mounting plate (3021). A slide rail (3023) is provided at the bottom of the wedge block (3021). The slide rail (3023) is located at the bottom of the inner cavity of the experimental table (101). A fixing plate (3022) is fixedly connected above the wedge block (3021). A movable rod (3014) is movably connected to one side wall of the fixing plate (3022), and the other end of the movable rod (3014) is movably connected to the guide slider (3012).

7. The indoor simulation device for frozen soil erosion at a structural surface according to claim 6, characterized in that, The experimental table (101) has discharge slots (1016) on both the upper and lower side walls. A guide sleeve (1017) is fixedly connected to the inner cavity of the discharge slot (1016) near the support leg (1011) of the experimental table (101).

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