A repeated seepage experiment device for waterlogged roadbed

Abstract

The utility model relates to seepage experimental device technical field, concretely relates to a kind of for repeated seepage experimental device of waterlogged roadbed, including test box, test box top is provided with box cover, and box cover is provided with spraying device and lifting cylinder;Lifting cylinder is connected with the pressure-bearing device being arranged in test box, for the vertical movement of control pressure-bearing device;Test box is used to place roadbed, spraying device is used to carry out spraying to roadbed, and pressure-bearing device is used to with roadbed upper side abut, the pressure-bearing capacity of real-time detection roadbed.Spraying device and lifting cylinder are installed on the box cover of test box, the position of pressure-bearing device is controlled by lifting cylinder, when pressure-bearing device and roadbed abut, then carry out repeated seepage experiment to roadbed by spraying device, the pressure-bearing capacity of roadbed can be observed in real time, while carrying out pressure-bearing capacity detection and seepage experiment, effectively improve the accuracy and efficiency of waterlogged roadbed repeated seepage experiment.

Description

Technical Field

[0001] This utility model relates to the technical field of seepage test devices, specifically to a repeated seepage test device for submerged roadbeds. Background Technology

[0002] Subgrades subjected to repeated seepage are prone to problems such as decreased stability, material loss, and structural damage. Therefore, it is necessary to use a repeated seepage test device for subgrades to test their stability. However, existing repeated seepage test devices for submerged roadbeds generally achieve seepage by spraying the roadbed and then testing its bearing capacity using a pressure-bearing device. This process of repeated seepage and pressure testing is inconvenient to operate. In existing technologies, the seepage process and the testing process are carried out sequentially, with a time difference in between. The pressure-bearing device cannot detect the bearing capacity of the roadbed during the seepage process in real time, which affects the accuracy of the experiment. Utility Model Content

[0003] In view of the problems existing in the prior art, the purpose of this utility model is to provide a water-proof roadbed structure to solve the problems that in the prior art, the seepage process and the process of testing the bearing capacity are carried out separately, which is inconvenient to operate, and at the same time, the bearing capacity of the roadbed cannot be monitored in real time during the seepage process.

[0004] A repeated seepage test device for flooded roadbeds includes a box body with a cover on top, and a spraying device and a lifting cylinder on the cover. The lifting cylinder is connected to the pressure-bearing device installed inside the box and is used to control the vertical movement of the pressure-bearing device; The box is used to hold the roadbed, the spraying device is used to spray the roadbed, and the pressure-bearing device is used to contact the upper side of the roadbed to detect the pressure-bearing capacity of the roadbed in real time.

[0005] Furthermore, the spraying device includes a water tank installed on the top surface of the tank cover, a water pump installed on one side of the water tank, the water pump being connected to a water supply pipe installed on the bottom surface of the tank cover, and a spray nozzle installed at the bottom of the water supply pipe.

[0006] Furthermore, the water supply pipeline includes a serpentine pipe installed on the bottom surface of the tank cover and a water guide pipe for connecting the serpentine pipe to the water pump, with the nozzle installed at the bottom of the serpentine pipe.

[0007] Furthermore, the pressure-bearing device includes a connecting plate connected to the movable end of the bottom of the lifting cylinder, a sliding rod slidably connected to the connecting plate, the bottom of the sliding rod being connected to the pressure plate, and an annular pressure sensor and a spring sleeved on the sliding rod, with the pressure sensor and spring disposed between the connecting plate and the pressure plate; A limit block is provided at the top of the sliding rod to prevent the sliding rod from detaching from the connecting plate.

[0008] Furthermore, the box is equipped with a frame plate for placing the roadbed. The frame plate divides the internal space of the box into upper and lower layers. A drain pipe is installed on the frame plate to drain water to the lower layer of the box, and a drain valve is installed on the drain pipe. The bottom of the box is equipped with a drain pipe on one side that connects to the lower layer of the box, and a drain valve is installed on the drain pipe.

[0009] Furthermore, a base is provided at the bottom of the box, and lifting mechanisms are installed on both sides of the base. The lifting mechanisms are used to control the box cover to move up or down.

[0010] Furthermore, the lifting mechanism includes a rotating rod; The base has vertically arranged rotating rods rotatably connected to both sides. A double-groove synchronous pulley is installed at the bottom of the rotating rod and inside the base. A servo motor is installed inside the base, and another double-groove synchronous pulley is installed on the output shaft of the servo motor. The double-groove synchronous pulley on the servo motor and the double-groove synchronous pulley on the rotating rod are driven by a synchronous belt. A threaded block is set at the top of the rotating rod, and a threaded sleeve is threadedly connected to the outside of the threaded block. The top of the threaded sleeve is connected to the bottom surface of the box cover.

[0011] Furthermore, a laser rangefinder and a radar level sensor are installed on the bottom surface of the box cover.

[0012] Furthermore, a turbidity sensor is installed on the bottom surface of the box.

[0013] Furthermore, a controller is provided on the side of the enclosure.

[0014] Beneficial effects: By installing the spraying device and lifting cylinder on the cover of the box, and controlling the position of the pressure-bearing device through the lifting cylinder, the roadbed can be repeatedly permeated by the spraying device after the pressure-bearing device comes into contact with the roadbed. This allows for real-time observation of the roadbed's pressure-bearing capacity, while simultaneously conducting pressure-bearing capacity testing and permeation experiments, effectively improving the accuracy and efficiency of repeated permeation experiments on water-soaked roadbeds. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a cross-sectional view of an embodiment of the present utility model; Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0017] In the diagram: 1. Housing; 2. Base; 3. Frame plate; 4. Cover; 5. Water tank; 6. Serpentine tube; 7. Nozzle; 8. Water pump; 9. Water guide pipe; 10. Radar level sensor; 11. Drain pipe; 12. Drain valve; 13. Turbidity sensor; 14. Drain pipe; 15. Drain valve; 16. Hydraulic cylinder; 17. Connecting plate; 18. Sliding rod; 19. Pressure plate; 20. Spring; 21. Ring pressure sensor; 22. Limit block; 23. Laser rangefinder sensor; 24. Rotating rod; 25. Threaded block; 26. Threaded sleeve; 27. Servo motor; 28. Double groove synchronous pulley; 29. ​​Controller. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0019] It should be noted that the embodiments and features involved in the embodiments of this utility model can be combined with each other without conflict. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] like Figures 1-3 The device shown is a repeated seepage test device for flooded roadbed, including a box 1, a box cover 4 on the top of the box 1, and a spraying device and a lifting cylinder on the box cover 4. The lifting cylinder is connected to the pressure-bearing device installed inside the housing 1, and is used to control the vertical movement of the pressure-bearing device; The housing 1 is used to hold the roadbed, the spraying device is used to spray the roadbed, and the pressure-bearing device is used to abut against the upper side of the roadbed to monitor the pressure-bearing capacity of the roadbed in real time. Preferably, the lifting cylinder is a hydraulic cylinder 16.

[0021] In this embodiment, the spraying device and the lifting cylinder are installed on the cover 4 of the box body 1. The position of the pressure-bearing device is controlled by the lifting cylinder. After the pressure-bearing device comes into contact with the roadbed, the spraying device is used to repeatedly test the roadbed for seepage. The pressure-bearing capacity of the roadbed can be observed in real time. At the same time, pressure-bearing capacity detection and seepage test are carried out, which effectively improves the accuracy and efficiency of repeated seepage test of waterlogged roadbed.

[0022] The sprinkler system includes a water tank 5 installed on the top surface of the tank cover 4, a water pump 8 installed on one side of the water tank 5, the water pump 8 being connected to a water supply pipe installed on the bottom surface of the tank cover 4, and a spray nozzle 7 installed at the bottom of the water supply pipe. The water supply pipeline includes a serpentine pipe 6 installed on the bottom of the tank cover 4 and a water guide pipe 9 for connecting the serpentine pipe 6 to the water pump 8. The nozzle 7 is installed at the bottom of the serpentine pipe 6. A water inlet is provided on the top of the water tank 5.

[0023] In this embodiment, the spraying device has a simple structure and is easy to install and use.

[0024] The pressure-bearing device includes a connecting plate 17 connected to the movable end of the bottom of the lifting cylinder. The connecting plate 17 is provided with several mounting holes for sliding of the sliding rod 18. The bottom of the sliding rod 18 is connected to the pressure plate 19. An annular pressure sensor 21 and a spring 20 are sleeved on the sliding rod 18. The pressure sensor and the spring 20 are arranged between the connecting plate 17 and the pressure plate 19.

[0025] A limit block 22 is provided at the top of the sliding rod 18. The limit block 22 is used to prevent the sliding rod 18 from disengaging from the mounting hole and thus from the connecting plate 17. The specific configuration of the limit block 22 is existing technology and will not be described in detail here.

[0026] In this embodiment, the pressure-bearing device has a simple structure and is easy to install and use. After the pressure plate 19 abuts against the top surface of the roadbed, the sliding rod 18 moves upward until the connecting plate 17 and the pressure plate 19 clamp the pressure sensor and the spring 20. During the process of the lifting cylinder moving the pressure plate 19 downward, the spring 20 is compressed and transmits the pressure to the pressure sensor.

[0027] The box 1 is equipped with a frame plate 3 for placing the roadbed. The frame plate 3 divides the internal space of the box 1 into upper and lower layers. A drain pipe 11 extending downward is installed on the frame plate 3, and a drain valve 12 is installed at the bottom of the drain pipe 11. A drain pipe 14 is provided on one side of the bottom of the box 1, and a drain valve 15 is provided at the end of the drain pipe 14 that extends out of the box 1.

[0028] In this embodiment, the water above the frame plate 3 can be controlled to move to the bottom of the frame plate 3 (i.e., the lower layer) through the drain pipe 11 and the drain valve 12, and the water in the lower layer of the box 1 can be controlled to be discharged outward through the drain pipe 14 and the drain valve 15.

[0029] A laser rangefinder sensor 23 and a radar level sensor 10 are installed at the bottom of the cover 4, and a turbidity sensor 13 is installed on the bottom surface of the body 1.

[0030] In this embodiment, the laser rangefinder 23 is used to detect the deformation of the roadbed under pressure; the radar level sensor 10 is used to detect the liquid level around the roadbed; and the turbidity sensor 13 is used to detect the turbidity of the water in the lower layer, thereby measuring the suspended particle size in the drainage and assessing the soil loss.

[0031] The bottom of the box 1 is provided with a base 2, and lifting mechanisms are installed on both sides of the base 2. The lifting mechanisms are used to control the box cover 4 to move up or down. The lifting mechanism includes a rotating rod 24; vertically arranged rotating rods 24 are rotatably connected to both sides of the base 2. A double-groove synchronous pulley 28 is installed at the bottom of the rotating rod 24 inside the base 2. A servo motor 27 is installed inside the base 2, and another double-groove synchronous pulley 28 is installed on the output shaft of the servo motor 27. The double-groove synchronous pulley 28 on the servo motor 27 and the double-groove synchronous pulley 28 on the rotating rod 24 are driven by a synchronous belt. A threaded block 25 is provided at the top of the rotating rod 24, and a threaded sleeve 26 is threadedly connected to the outside of the threaded block 25. The top of the threaded sleeve 26 is fixedly connected to the bottom surface of the cover 4. The rotating rod 24 is rotatably connected to the upper and lower side walls of the base 2 via bearings.

[0032] In this embodiment, the upgrade mechanism has a simple structure, is easy to install and use, and can easily adjust the height of the box cover 4 in the vertical direction. The opening on the top of the box body 1 can be opened or closed by the box cover 4, which facilitates the placement and removal of the roadbed.

[0033] A controller 29 is installed on one side of the housing 1. The controller 29 is electrically connected to the water pump 8, servo motor 27, radar level sensor 10, laser rangefinder 23, turbidity sensor 13, ring pressure sensor 21, drain valve 12, drain valve 15, and hydraulic cylinder 16. The drain valve 12 and drain valve 15 can also be manual valves, but electric valves are more convenient to operate.

[0034] In this embodiment, the controller 29 is a prior art device used to adjust parameters, control the operation of related equipment, and display and transmit information.

[0035] Working principle: The servo motor 27 is started by the controller 29. The servo motor 27 drives the rotating rod 24 to rotate. Under the interaction of the threaded block 25 and the threaded sleeve 26 at the top of the rotating rod 24, the threaded sleeve 26 moves upward and drives the box cover 4 to move upward, opening the opening at the top of the box body 1. The roadbed is placed on the frame plate 3. Then the servo motor 27 rotates in the opposite direction, and the box cover 4 closes the opening at the top of the box body 1. The controller 29 controls the hydraulic cylinder 16, which in turn controls the pressure-bearing device to move downward until the pressure plate 19 is pressed against the upper surface of the roadbed. Then, the spraying device simulates the real seepage environment, and the hydraulic cylinder 16 continues to move downward. The pressure sensor detects the roadbed's bearing capacity in real time. While repeatedly simulating the seepage environment, the pressure sensor detects the roadbed's bearing capacity in real time to observe the changes in the roadbed's bearing capacity. Meanwhile, the laser rangefinder 23 is used to detect the deformation of the roadbed under pressure; the radar level sensor 10 is used to detect the liquid level around the roadbed; and the turbidity sensor 13 is used to detect the turbidity of the water in the lower layer, thereby measuring the suspended particle size in the drainage and assessing the soil loss. After the experiment, the box cover 4 was opened, the roadbed was removed, and drainage was carried out through the drainage pipe 14 and the drainage pump 8.

[0036] The water pump 8 is model HX300KPDCB, the controller 29 is model ZG-ASLM, the radar level sensor 10 is model 001-V-LD1, the turbidity sensor 13 is model TSW-10 / 20 / 30, the hydraulic cylinder 16 is model HSG63-32-100, the ring pressure sensor 21 is model EVT-12M-300N, the laser rangefinder sensor 23 is model SICK DT50 / DM60, and the servo motor 27 is model MSMF102L1U.

[0037] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if such modifications and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include such modifications and modifications.

Claims

1. A repeated seepage test apparatus for flooded roadbeds, characterized in that, It includes a box body, with a box cover on the top, and a spraying device and a lifting cylinder installed on the box cover; The lifting cylinder is connected to the pressure-bearing device installed inside the box and is used to control the vertical movement of the pressure-bearing device; The box is used to hold the roadbed, the spraying device is used to spray the roadbed, and the pressure-bearing device is used to contact the upper side of the roadbed to detect the pressure-bearing capacity of the roadbed in real time.

2. The repeated seepage test device for flooded roadbeds according to claim 1, characterized in that, The spraying device includes a water tank installed on the top surface of the tank cover, a water pump installed on one side of the water tank, the water pump being connected to a water supply pipe installed on the bottom surface of the tank cover, and a spray nozzle installed at the bottom of the water supply pipe.

3. The repeated seepage test device for flooded roadbeds according to claim 2, characterized in that, The water supply pipeline includes a serpentine pipe installed on the bottom of the tank cover and a water guide pipe for connecting the serpentine pipe to the water pump, with the nozzle installed at the bottom of the serpentine pipe.

4. The repeated seepage test device for submerged roadbeds according to claim 2, characterized in that, The pressure-bearing device includes a connecting plate connected to the movable end of the bottom of the lifting cylinder. A sliding rod is slidably connected to the connecting plate. The bottom of the sliding rod is connected to the pressure plate. A ring pressure sensor and a spring are sleeved on the sliding rod. The pressure sensor and the spring are arranged between the connecting plate and the pressure plate. A limit block is provided at the top of the sliding rod to prevent the sliding rod from detaching from the connecting plate.

5. The repeated seepage test device for submerged roadbeds according to claim 1, characterized in that, The box is equipped with a frame plate for placing the roadbed. The frame plate divides the internal space of the box into upper and lower layers. The frame plate is equipped with a drain pipe for draining water to the lower layer of the box, and a drain valve is installed on the drain pipe. The bottom of the box is equipped with a drain pipe on one side that connects to the lower layer of the box, and a drain valve is installed on the drain pipe.

6. The repeated seepage test device for submerged roadbeds according to claim 1, characterized in that, The bottom of the box is provided with a base, and lifting mechanisms are installed on both sides of the base. The lifting mechanisms are used to control the box lid to move up or down.

7. The repeated seepage test device for flooded roadbeds according to claim 6, characterized in that, The lifting mechanism includes a rotating rod; The base has vertically arranged rotating rods rotatably connected to both sides. A double-groove synchronous pulley is installed at the bottom of the rotating rod and inside the base. A servo motor is installed inside the base, and another double-groove synchronous pulley is installed on the output shaft of the servo motor. The double-groove synchronous pulley on the servo motor and the double-groove synchronous pulley on the rotating rod are driven by a synchronous belt. A threaded block is set at the top of the rotating rod, and a threaded sleeve is threadedly connected to the outside of the threaded block. The top of the threaded sleeve is connected to the bottom surface of the box cover.

8. The repeated seepage test device for submerged roadbeds according to claim 1, characterized in that, The bottom surface of the box cover is equipped with a laser rangefinder and a radar level sensor.

9. The repeated seepage test device for flooded roadbeds according to claim 1, characterized in that, A turbidity sensor is installed on the bottom surface of the box.

10. A repeated seepage test apparatus for a flooded roadbed according to any one of claims 1-9, characterized in that, A controller is installed on the side of the enclosure.

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