A soil body dehydration and cracking treatment test device

Abstract

The application discloses a kind of soil body dehydration cracking treatment test device, including test table and support frame, support frame is equipped with transverse plate, transverse plate is at least fixedly connected two mixing cylinders, test table upper side is equipped with receiving box, receiving box is correspondingly arranged with mixing cylinder, mixing cylinder includes outer cylinder, outer cylinder is fixedly connected with transverse plate, outer cylinder upper side is equipped with filling port, outer cylinder bottom side is equipped with discharge port, discharge port is equipped with discharge gate, filling port is equipped with box body, box body bottom is concave arc and uniformly arranged with through hole, one of box body is added wet original soil, and the rest box body is added wet solidified material;Outer cylinder is rotatably connected with inner cylinder in, and sampling soil body is loaded into inner cylinder.The application is humidified to original soil, and the same mode is used, so that irrelevant factors of test can be excluded, and the influence of solidified material on original soil, the influence of original soil crack resistance performance of adding original soil is accurately understood.

Description

Technical Field

[0001] This invention relates to the field of soil cracking treatment testing technology, and in particular to a soil dehydration cracking treatment testing device. Background Technology

[0002] Expansive soil foundations are highly unstable, exhibiting characteristics such as expansion upon water absorption, contraction upon water loss, repeated expansion and contraction deformation, decreased bearing capacity upon immersion in water, and development of shrinkage cracks. This often causes uneven vertical or horizontal expansion and contraction deformation in buildings, resulting in displacement, cracking, tilting, or even destruction.

[0003] The conventional approach is to add a certain proportion (the specific amount is determined by experiment, usually around 5%) of solidifying materials such as lime, cement, and fly ash or other chemical solidifying agents to the expansive soil. This changes the composition and structure of the mineral components in the expansive soil, reduces or eliminates the swelling and shrinkage characteristics of the expansive soil, and can also significantly improve the strength and stability of the soil.

[0004] When dry expansive soil particles are mixed with lime, cement, or fly ash, the expansive soil particles are affected by gravity and form stratification relative to the cement ash or fly ash, resulting in uneven mixing. In addition, water needs to be added to the mixture. The amount of water added should not be too much, and if the water is added in an inappropriate way, it will cause the mixture to be uneven. It requires a long mixing time. Excessive mixing in the mixing tank is significantly different from the rough mixing on the construction site (which will not be particularly uniform). This may result in the experimental mix being appropriate, but the actual application will not achieve the same effect as the experiment. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a soil dehydration and cracking treatment test device, thereby solving the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A test device for treating soil dehydration and cracking includes a test bench and a support frame. The support frame is provided with a horizontal plate, and the horizontal plate is fixedly connected to at least two mixing cylinders. A receiving box is provided on the upper side of the test bench, and the receiving box is correspondingly arranged with the mixing cylinders. The mixing cylinder includes an outer cylinder, which is fixedly connected to the horizontal plate. A filling port is provided on the upper side of the outer cylinder, and a discharge port is provided on the bottom side of the outer cylinder. A discharge gate is provided at the discharge port.

[0008] The filling port is equipped with a box, the bottom of which is concave and has evenly distributed through holes. One box is filled with moist original soil, and the other boxes are filled with moist curing material.

[0009] The outer cylinder is rotatably connected to the inner cylinder, the inner cylinder is filled with sampled soil, the outer cylinder is fixedly connected to the servo motor, the main shaft of the servo motor is coaxially fixedly connected to the inner cylinder, the inner cylinder is provided with through holes with corresponding filling port and discharge port, and the inner wall of the inner cylinder is provided with at least two baffles.

[0010] The inner cylinder has an axially sliding connection pressure plate.

[0011] Preferably, the support frame includes a vertical plate, which is fixedly connected to the upper side of the test bench. The vertical plate is slidably connected to a slider. A first cylinder is fixedly connected to the upper side of the vertical plate. The telescopic rod of the first cylinder is fixedly connected to the slider. A horizontal plate is fixedly connected to one side of the slider.

[0012] Preferably, a push-pull shaft is fixedly connected to one side of the pressure plate, the push-pull shaft passes through the end face of the outer cylinder and the inner cylinder, a slot is provided on the outer side of the pressure plate, the slot is correspondingly set with the baffle and forms a flow groove, a sleeve is fixedly connected to the outside of the outer cylinder, a spiral groove is provided on the inner wall of the sleeve, and a ball is provided on the outer circle of the push-pull shaft, the ball is limited to rolling in the spiral groove.

[0013] Preferably, a slide plate is fixedly connected to the upper side of the test bench, the receiving box is fixedly connected to the upper side of the slide plate, an inclined scraper is fixedly connected to the bottom of the outer cylinder, a horizontal cylinder is fixedly connected to one side of the test bench, and the telescopic rod of the horizontal cylinder is fixedly connected to the slide plate.

[0014] Preferably, a fan is fixedly connected to the upper side of the test bench.

[0015] Preferably, an upright plate is fixedly connected to the upper side of the outer cylinder, the upright plate is provided with a sliding groove, a sliding block is slidably connected in the sliding groove, an electric push rod is fixedly connected to the upper side of the upright plate, the telescopic rod of the electric push rod is fixedly connected to the sliding block, a hanging rod is fixedly connected to the bottom of the sliding block, a push plate is slidably connected to the middle of the hanging rod, a support spring is fixedly connected between the push plate and the hanging rod, and the lower end of the hanging rod is fixedly connected to the box body.

[0016] Preferably, a round rod is fixedly connected to one side of the push plate.

[0017] The advantages of this invention are as follows: The soil dehydration and cracking treatment test device provided by this invention adds soil particles to the wet soil in the same way as adding wet solidification materials, and moistens the soil. The same mode (moistening method and mixing method) is used, so that irrelevant factors in the test can be eliminated, and it is easy to accurately understand the effect of adding solidification materials to the soil on the crack resistance of the soil.

[0018] This invention uses a pusher plate, under the pressure of a supporting spring, to compress wet soil or wet solidification material, which then passes through a through hole into the inner cylinder. With the periodic rotation of the inner cylinder, the mud ball particles and the soil particles roll and adhere together. The wet mud ball is easily coated with soil, preventing uneven stratification caused by the different weights of the soil and solidification material particles, which would affect the effectiveness of soil cracking treatment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the basic structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the mixing cylinder in this invention;

[0021] Figure 3 This is a cross-sectional view of the mixing cylinder in this invention;

[0022] Figure 4 This is a cross-sectional structural diagram of the mixing cylinder of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] like Figure 1-4 As shown, the present invention provides a test device for treating soil dehydration and cracking, including a test bench 1 and a support frame 2. The support frame 2 is provided with a horizontal plate 3, and the horizontal plate 3 is fixedly connected to at least two mixing cylinders 4. The test bench 1 is provided with a receiving box 511 on the upper side, and the receiving box 511 is correspondingly arranged with the mixing cylinders 4.

[0025] The test bench 1 is fixedly connected to the upper side of the slide plate 11, the receiving box 511 is fixedly connected to the upper side of the slide plate 11, the bottom of the outer cylinder 41 is fixedly connected to the inclined scraper 12, the test bench 1 is fixedly connected to one side of the test bench 1, the telescopic rod of the horizontal cylinder 13 is fixedly connected to the slide plate 11, and the test bench 1 is fixedly connected to the upper side of the fan 14.

[0026] The mixing cylinder 4 includes an outer cylinder 41, which is fixedly connected to the horizontal plate 3. The upper side of the outer cylinder 41 is provided with a filling port 42, and the bottom side of the outer cylinder 41 is provided with a discharge port 43. The discharge port 43 is provided with a discharge gate 44.

[0027] The filling port 42 is provided with a box 5. The inner wall of the box 5 is provided with scale lines. The bottom of the box 5 is concave and has through holes evenly provided. One box 5 is filled with wet original soil, and the other boxes 5 are filled with wet solidification material. The solidification material is lime or cement and is mixed with water to form a viscous substance. It is easy to form a moist mud ball through the through holes.

[0028] The outer cylinder 41 is rotatably connected to the inner cylinder 45, and the inner cylinder 45 is filled with sampled soil. The outer cylinder 41 is fixedly connected to the servo motor 46, and the main shaft of the servo motor 46 is coaxially fixedly connected to the inner cylinder 45. The inner cylinder 45 is provided with through holes 47 corresponding to the filling port 42 and the discharge port 43. The inner wall of the inner cylinder 45 is provided with at least two baffles 48. When the inner cylinder 45 rotates, it can move the original soil particles upward to facilitate mixing.

[0029] The inner cylinder 45 has an internal axial sliding connection pressure plate 6.

[0030] This invention allows for testing the improvement effect of different proportions of a wet-curing material on the original soil by quantitatively filling the box 5 with a wet-curing material. One mixing cylinder 4 is filled with original soil particles, and the corresponding box 5 is filled with wet original soil. The other mixing cylinders 4 are filled with original soil particles, and the corresponding box 5 contains the amount of wet-curing material to be tested. The wet-curing material and the wet original soil have the same weight. The wet-curing material and the wet original soil are pressurized through the through-hole. Combined with the periodically rotating inner cylinder 45, the through-hole 47 of the inner cylinder shears the mud entering the inner cylinder 45, forming mud balls (the size of the mud balls can be controlled by the diameter of the through-hole, through a limited number of tests). (Obtain a mud sample that can be mixed quickly); the mud ball enters the inner cylinder 45, and with the rotation of the inner cylinder 45, it adheres to the original soil particles inside, making it easy for the original soil particles to wrap the mud ball. With the extrusion of the pressure plate 6, a mixture is formed. After the discharge gate 44 is opened, the mixed mud sample is discharged from the discharge outlet 43 and falls into the receiving box 511. The slide plate 11 slides horizontally, causing the receiving box 511 to move relative to the mixing cylinder 4. After the inclined scraper 12 flattens the surface of the mud sample, it is dried by the blower 14. After the moisture in the mud sample evaporates, cracks are formed. The cracking improvement of the mud sample mixed with the solidification material is recorded and compared with the improvement effect of the solidification material on the original soil.

[0031] This invention uses the above-mentioned mixing mode, in which the wet native soil particles are added in the same way as the wet solidification material is added, to humidify the native soil. By adopting the same mode (humidification method and mixing method), irrelevant factors in the test can be eliminated, making it easier to accurately understand the effect of adding solidification material to native soil on the crack resistance of native soil.

[0032] In one embodiment of the present invention, a push-pull shaft 61 is fixedly connected to one side of the pressure plate 6. The push-pull shaft 61 passes through the end faces of the outer cylinder 41 and the inner cylinder 45. A slot 62 is provided on the outer side of the pressure plate 6. The slot 62 is correspondingly arranged with the baffle 48 and forms a flow groove 63. A sleeve 64 is fixedly connected to the outside of the outer cylinder 41. A spiral groove 65 is provided on the inner wall of the sleeve 64. A ball bearing 66 is provided on the outer circle of the push-pull shaft 61. The ball bearing 66 is limited and rolls in the spiral groove 65. During operation, the inner cylinder 45 is driven to rotate forward and backward by the servo motor 46, which turns over the original soil in the inner cylinder 45. While the inner cylinder 45 is rotating, Due to the action of the baffle 48, the pressure plate 6 rotates synchronously. When the push-pull shaft 61 of the pressure plate 6 rotates relative to the sleeve 64, the limiting effect of the spiral groove 65 causes the push-pull shaft 61 to form an axial displacement while rotating relative to the sleeve 65. The axial displacement of the pressure plate 6 compresses the original soil particles and the falling mud balls. Compared with the high-speed rotation of the mixing shaft, the mixing action is gentle, and the crushing effect on the original soil particles is lower than that of the mixing shaft. The mud ball compression and the original soil particles can be mixed together, so that the mixing can be relatively uniform even at low speed, which is convenient for use in actual engineering site original soil improvement operations.

[0033] In one embodiment of the present invention, the support frame 2 includes a vertical plate 21, which is fixedly connected to the upper side of the test bench 1. The vertical plate 21 is slidably connected to a slider 22. A first cylinder 23 is fixedly connected to the upper side of the vertical plate 21. The telescopic rod of the first cylinder 23 is fixedly connected to the slider 22. A horizontal plate 3 is fixedly connected to one side of the slider 22. In use, the height of the slider 22 is raised and lowered, which facilitates the oblique scraper 12 to scrape the mud samples of different thicknesses in the receiving box 511.

[0034] In one embodiment of the present invention, an upright plate 51 is fixedly connected to the upper side of the outer cylinder 41. The upright plate 51 is provided with a sliding groove 52, and a sliding block 53 is slidably connected in the sliding groove 52. An electric push rod 54 is fixedly connected to the upper side of the upright plate 51. The telescopic rod of the electric push rod 54 is fixedly connected to the sliding block 53. A hanging rod 55 is fixedly connected to the bottom of the sliding block 53. A push plate 56 is slidably connected to the middle of the hanging rod 55. A support spring 57 is fixedly connected between the push plate 56 and the hanging rod 55. The lower end of the hanging rod 55 is fixedly connected to the box body 5. In use, the box body is filled with moist soil or moist curing material according to the reference scale line. The material is smoothed with a scraper, and the push plate 56 is released. Under the downward pressure of the support spring 57, the wet soil or wet solidification material is squeezed and enters the inner cylinder 45 through the through hole. With the periodic rotation of the inner cylinder 45, the mud ball particles and the soil particles are rolled and adhered together. The wet mud ball is easy to stick to the soil around it, preventing uneven stratification caused by the different weights of the soil and solidification material particles (for example, the solidification material is light and located on the surface, while the soil particles are heavy and located at the bottom). After being fully mixed, the electric push rod 54 pushes the box 5 into the inner cylinder 45 and pushes the mixed mud sample downward, accelerating the mud sample to fall into the receiving box 511.

[0035] Furthermore, a round rod 58 is fixedly connected to one side of the push plate 56 to facilitate lifting the push plate 56.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A test device for treating soil dehydration and cracking, comprising a test bench (1) and a support frame (2), the support frame (2) having a horizontal plate (3), the horizontal plate (3) being fixedly connected to at least two mixing cylinders (4), the test bench (1) having a receiving box (511) on its upper side, the receiving box (511) being correspondingly arranged with the mixing cylinders (4), characterized in that: The mixing cylinder (4) includes an outer cylinder (41), which is fixedly connected to the horizontal plate (3). The upper side of the outer cylinder (41) is provided with a filling port (42), and the bottom side of the outer cylinder (41) is provided with a discharge port (43). The discharge port (43) is provided with a discharge gate (44). The filling port (42) is provided with a box (5), the bottom of the box (5) is concave and evenly provided with through holes, one of the boxes (5) is filled with wet original soil, and the other boxes (5) are filled with wet curing material; The inner cylinder (45) is rotatably connected to the outer cylinder (41). The inner cylinder (45) is filled with sampled soil. The outer cylinder (41) is fixedly connected to the servo motor (46). The main shaft of the servo motor (46) is coaxially fixedly connected to the inner cylinder (45). The inner cylinder (45) is provided with through holes (47) corresponding to the filling port (42) and the discharge port (43). The inner wall of the inner cylinder (45) is provided with at least two baffles (48). The inner cylinder (45) is axially slidingly connected to the pressure plate (6); The pressure plate (6) is fixedly connected to a push-pull shaft (61) on one side. The push-pull shaft (61) passes through the end face of the outer cylinder (41) and the inner cylinder (45). The pressure plate (6) is provided with a slot (62) on the outside. The slot (62) is correspondingly provided with the baffle (48) and forms a flow groove (63). The outer cylinder (41) is fixedly connected to a sleeve (64). The inner wall of the sleeve (64) is provided with a spiral groove (65). The outer circle of the push-pull shaft (61) is provided with a ball (66). The ball (66) is limited to rolling in the spiral groove (65).

2. The soil dehydration and cracking treatment test device according to claim 1, characterized in that: The support frame (2) includes a vertical plate (21), which is fixedly connected to the upper side of the test bench (1). The vertical plate (21) is slidably connected to a slider (22). A first cylinder (23) is fixedly connected to the upper side of the vertical plate (21). The telescopic rod of the first cylinder (23) is fixedly connected to the slider (22). A horizontal plate (3) is fixedly connected to one side of the slider (22).

3. The soil dehydration and cracking treatment test device according to claim 1, characterized in that: The test bench (1) is fixedly connected to the upper side of the slide plate (11), the receiving box (511) is fixedly connected to the upper side of the slide plate (11), the bottom of the outer cylinder (41) is fixedly connected to the inclined scraper (12), the test bench (1) is fixedly connected to the side of the horizontal cylinder (13), and the telescopic rod of the horizontal cylinder (13) is fixedly connected to the slide plate (11).

4. The soil dehydration and cracking treatment test device according to claim 1, characterized in that: The test bench (1) is fixedly connected to the upper side of the fan (14).

5. The soil dehydration and cracking treatment test device according to claim 1, characterized in that: The upper side of the outer cylinder (41) is fixedly connected to the upright plate (51), the upright plate (51) is provided with a sliding groove (52), the sliding block (53) is slidably connected in the sliding groove (52), the upper side of the upright plate (51) is fixedly connected to the electric push rod (54), the telescopic rod of the electric push rod (54) is fixedly connected to the sliding block (53), the bottom of the sliding block (53) is fixedly connected to the hanging rod (55), the middle part of the hanging rod (55) is slidably connected to the push plate (56), the push plate (56) and the hanging rod (55) are fixedly connected to the support spring (57), and the lower end of the hanging rod (55) is fixedly connected to the box body (5).

6. The soil dehydration and cracking treatment test device according to claim 5, characterized in that: A round rod (58) is fixedly connected to one side of the push plate (56).

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