Soil compaction detection device for land development

Abstract

The utility model relates to the field of building detection equipment, in particular to a soil compaction detection device for land development. The soil compaction detection device for land development comprises a shell, three box bodies are fixed to the positions, close to the bottom, of the outer side wall of the shell at equal angles, connecting plates are slidably connected into the box bodies, cavities are formed in the inner walls of the box bodies, and U-shaped grooves are formed in the top ends of the inner sides of the cavities. One end of the U-shaped groove is communicated with the position, close to the top end, in the box body, the other end of the U-shaped groove is communicated with a cylindrical hole formed in the box body, a column body is arranged on the inner side of the cylindrical hole, one end of the column body is fixedly connected with a drill cone, and the maximum cross section of the column body is the same as the cross section of the cylindrical hole. The soil compaction detection device for land development, provided by the utility model, has the advantages of being capable of preventing the influence of position deviation on a detection result in the use process of equipment and convenient to move after being used.

Description

Technical Field

[0001] This utility model relates to the field of building testing equipment, and in particular to a soil compaction testing device for land development. Background Technology

[0002] Existing soil compaction testing methods include: ring cutter method, sand cone method, nuclear density and humidity meter method, nuclear-free density meter method, and falling weight deflectometer method. Among these, the falling weight deflectometer method uses a heavy hammer dropped freely from a certain height to generate an impact load, causing instantaneous deformation of the road surface. Sensors measure the deflection value of the road surface, and the degree of compaction of the subgrade soil is evaluated based on the magnitude of the deflection value. Generally, the smaller the deflection value, the higher the soil compaction degree and the stronger the bearing capacity.

[0003] In the prior art, the displacement of a falling weight deflectometer is prevented during use by a stable support structure similar to a tripod, which can be installed at the bottom or around the falling weight deflectometer to support and fix the equipment from multiple directions, effectively limiting the displacement of the equipment in various directions. However, the limiting effect of the tripod support is limited when the equipment is too heavy, and the limiting effect is not good in the practical use of the equipment.

[0004] Therefore, it is necessary to provide a new soil compaction testing device for land development to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a soil compaction testing device for land development that can prevent the positional displacement of the device from affecting the test results during use and is easy to move after use.

[0006] The soil compaction testing device for land development provided by this utility model includes: a shell, a compaction hammer body for soil compaction is arranged at the upper part of the shell, and a testing instrument body is installed at the lower part of the inner side wall of the shell;

[0007] Three boxes are fixed at equal angles on the outer side wall of the shell near the bottom. A connecting plate is slidably connected inside the box. A cavity is opened in the inner wall of the box. The side of the connecting plate is in sealed contact with the inner side of the cavity. The connecting plate is controlled by a hydraulic push rod to move along the inner length direction of the cavity.

[0008] A U-shaped groove is provided at the top of the inner side of the cavity. One end of the U-shaped groove is connected to the inside of the box near the top, and the other end is connected to a cylindrical hole provided in the box. One end of the cylindrical hole extends to the bottom of the box. A column is provided inside the cylindrical hole. A drill bit is fixedly connected to one end of the column. The maximum cross-section of the column is the same as the cross-section of the cylindrical hole.

[0009] Preferably, the cross-sectional shape of the connecting plate is square or circular.

[0010] Preferably, the internal volume of the cavity is 90% to 95% of the total internal volume of the four cylindrical holes.

[0011] Preferably, the length of the column is equal to one-tenth of the length of the cylindrical hole, and the overall length of the column and the drill bit is the same as the length of the cylindrical hole.

[0012] Preferably, the longitudinal centerline of the connecting plate and the longitudinal centerline of the hydraulic push rod output end are always on the same longitudinal axis.

[0013] Preferably, the bottom end of the connecting plate is fixedly connected to the universal wheel body, and the bottom of the box body and the bottom of the shell are always on the same horizontal line.

[0014] Compared with related technologies, the soil compaction testing device for land development provided by this utility model has the following beneficial effects:

[0015] This utility model provides a soil compaction testing device for land development. When the device is placed on the test point, the connecting plate discharges the air inside the cavity through the U-shaped groove and pushes the column to drive the drill bit into the ground, thereby strengthening the connection between the device and the ground and preventing the device from shifting and affecting the test data. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the soil compaction testing device for land development provided by this utility model;

[0017] Figure 2 for Figure 1 The diagram shows the internal structure of the box and the U-shaped channel.

[0018] Figure 3 for Figure 1 The diagram shows the internal structure of the housing and the casters.

[0019] Figure 4 for Figure 1 The diagram shows the overall external structure.

[0020] The following are the labels in the diagram: 1. Shell; 2. Hammer body; 3. Detector body; 4. Box; 5. Hydraulic push rod; 6. Connecting plate; 7. Cavity; 8. U-shaped groove; 9. Cylindrical hole; 10. Column; 11. Drill cone; 12. Caster wheel body. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model 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 of the present utility model and are not intended to limit the present utility model.

[0022] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0023] Please see Figures 1 to 4 This utility model provides a soil compaction testing device for land development, which includes:

[0024] The housing 1 has a soil compaction hammer body 2 installed at the top inside the housing 1. The detector body 3 is installed at the bottom of the inner side wall of the housing 1. The detector body 3 detects the natural falling depth of the compaction hammer body 2, so that the user can observe the soil compaction data.

[0025] Three boxes 4 are fixed at equal angles on the outer side wall of the housing 1 near the bottom. The bottom of the boxes 4 is always on the same horizontal line as the bottom of the housing 1. The equal angle distribution of the three boxes 4 has triangular stability, which increases the contact area between the housing 1 and the ground, and at the same time enhances the placement stability of the equipment.

[0026] Inside the housing 4, a connecting plate 6 is slidably connected. The cross-sectional shape of the connecting plate 6 can be square or round, which helps to improve the flexibility of the equipment, save manufacturing costs for the manufacturer, and facilitate the maintenance and replacement of parts later. The bottom end of the connecting plate 6 is fixedly connected to the universal wheel body 12. When the equipment is not working, the universal wheel body 12 at the bottom end of the connecting plate 6 can enhance the mobility of the equipment, reduce labor costs, and improve transportation efficiency.

[0027] The inner wall of the housing 4 has a cavity 7. The side of the connecting plate 6 is in sealed contact with the inner side of the cavity 7. The connecting plate 6 is controlled by the hydraulic push rod 5 to move along the inner length of the cavity 7. The longitudinal axis center line of the connecting plate 6 and the longitudinal axis center line of the output end of the hydraulic push rod 5 are always on the same longitudinal axis. The output end of the hydraulic push rod 5 always drives the connecting plate 6 to move vertically, avoiding the connecting plate 6 tilting and rubbing against the inner side of the cavity 7, enhancing the durability of the parts, reducing maintenance costs. Through the sealing structure formed by the connecting plate 6 and the cavity 7, the pressure inside the connecting plate 6 and the cavity 7 can be kept stable, reducing wear between parts and further improving the durability of the parts.

[0028] A U-shaped groove 8 is provided at the top of the inner side of the cavity 7. One end of the U-shaped groove 8 is connected to the inside of the box 4 near the top, and the other end is connected to the cylindrical hole 9 provided in the box 4. The U-shaped groove 8 restricts the airflow direction squeezed by the connecting plate 6, so that the air squeezed by the connecting plate 6 can only enter the cylindrical hole 9 through the U-shaped groove 8. One end of the cylindrical hole 9 extends to the bottom of the box 4. A column 10 is provided inside the cylindrical hole 9. A drill bit 11 is fixedly connected to one end of the column 10. The length of the column 10 is equal to one-tenth of the length of the cylindrical hole 9. The overall length of the column 10 and the drill bit 11 is the same as the length of the cylindrical hole 9. The column 10 and the drill bit 11 can be stored inside the cylindrical hole 9 as a whole, which improves the storage capacity of the equipment parts and prevents the external ground from abrading the tip of the drill bit 11 during the movement, thus reducing the soil breaking efficiency of the drill bit 11 during operation.

[0029] The maximum cross-section of the column 10 is the same as the cross-section of the cylindrical hole 9, and the side of the column 10 is a smooth curved surface, which can slide more smoothly and stably inside the cylindrical hole 9, thereby stably driving the drill bit 11 to insert into the soil, enhancing the stability of the equipment during detection, preventing the equipment from shifting, and the internal volume of the cavity 7 is 90% to 95% of the total internal volume of the four cylindrical holes 9. The internal volume of the cavity 7 is less than the total internal volume of the four cylindrical holes 9, which helps to prevent the column 10 and the drill bit 11 from detaching from the bottom of the cylindrical hole 9 during the process of air pushing the column 10.

[0030] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A soil compaction testing device for land development, characterized in that, include: The housing (1) has a soil compaction hammer body (2) installed on the upper part of the housing (1) and a detector body (3) installed on the lower part of the inner side wall of the housing (1). Three boxes (4) are fixed at equal angles on the outer side wall of the housing (1) near the bottom. A connecting plate (6) is slidably connected inside the box (4). A cavity (7) is opened on the inner wall of the box (4). The side of the connecting plate (6) is in sealed contact with the inner side of the cavity (7). The connecting plate (6) is controlled by a hydraulic push rod (5) to move along the inner length direction of the cavity (7). A U-shaped groove (8) is provided at the top of the inner side of the cavity (7). One end of the U-shaped groove (8) is connected to the inside of the box (4) near the top, and the other end is connected to the cylindrical hole (9) provided in the box (4). One end of the cylindrical hole (9) extends to the bottom of the box (4). A column (10) is provided inside the cylindrical hole (9). A drill bit (11) is fixedly connected to one end of the column (10). The maximum cross-section of the column (10) is the same as the cross-section of the cylindrical hole (9).

2. The soil compaction testing device for land development according to claim 1, characterized in that, The cross-sectional shape of the connecting plate (6) is square or circular.

3. The soil compaction testing device for land development according to claim 1, characterized in that, The internal volume of the cavity (7) is 90% to 95% of the total internal volume of the four cylindrical holes (9).

4. The soil compaction testing device for land development according to claim 3, characterized in that, The length of the column (10) is equal to one-tenth of the length of the cylindrical hole (9), and the overall length of the column (10) and the drill bit (11) is the same as the length of the cylindrical hole (9).

5. The soil compaction testing device for land development according to claim 2, characterized in that, The longitudinal centerline of the connecting plate (6) and the longitudinal centerline of the output end of the hydraulic push rod (5) are always on the same longitudinal axis.

6. The soil compaction testing device for land development according to claim 5, characterized in that, The bottom end of the connecting plate (6) is fixedly connected to the universal wheel body (12), and the bottom of the box (4) and the bottom of the shell (1) are always on the same horizontal line.

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