Subgrade compaction pit soil-sampling device

Abstract

A subgrade compaction pit soil-sampling device, comprising a frame (1) for providing support, upper and lower ends of the frame (1) being each provided with a cover plate (7), and a through hole being formed in the middle of each cover plate (7); a plurality of guide rails (4) arranged in the frame (1), two ends of each guide rail (4) being respectively connected to the upper and lower cover plates (7); a frame bucket (2) arranged at the bottom of the frame (1) and enclosing the bottom of the frame (1), the frame bucket (2) engaging with the lower cover plate (7) to form a cavity for accommodating subgrade soil extracted by a soil-sampling device; and the soil-sampling device (3) mounted on a guide rail plate (5), the guide rail plate (5) being cooperatively connected to the plurality of guide rails (4). A mechanical rotary drilling method is used to perform deep pit drilling of the subgrade, achieving high drilling efficiency, and after the drilling is finished, the soil can be extracted by reverse drilling, providing a convenient soil-sampling method.

Description

A roadbed compaction excavation and soil extraction device Technical Field

[0001] This utility model relates to the field of engineering construction technology, specifically a device for excavating and removing soil to improve roadbed compaction. Background Technology

[0002] As a crucial component of roads, the compaction degree of the roadbed is one of the key control items for project acceptance. The test results of the compaction degree directly affect whether the next stage of the project can proceed and whether the entire project can successfully pass acceptance, playing a vital role in road construction. Methods for testing the compaction degree of roadbed engineering can be specifically divided into sand filling method, water filling method (water bag method), ring cutter method, nuclear analyzer method, core drilling method, etc., with the most commonly used method being the pit excavation and sand filling method.

[0003] According to the "Specifications for Field Testing of Highway Subgrade and Pavement" (JTG3450—2019), the excavation depth of test pits varies from 15cm to 40cm depending on the particle size of the fill material. During field operations, the tools used for digging pits are often chisels, hammers, and shovels. The workload for compaction testing is very large during peak filling periods, and traditional testing methods require a significant amount of manual labor, resulting in high costs. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a roadbed compaction excavation and soil extraction device to improve the efficiency of roadbed soil extraction and excavation, reduce the labor intensity of manual operations, and simplify the roadbed compaction test operation process.

[0005] To achieve the above objectives, a roadbed compaction excavation and soil extraction device is designed, comprising a frame for providing support, with a cover plate at each of the upper and lower ends of the frame, and a through hole in the middle of the cover plate; several guide rails are arranged inside the frame, with the upper and lower cover plates connected to the two ends of the guide rails respectively; a frame bucket is arranged at the bottom of the frame, enclosing the bottom of the frame, and the frame bucket, together with the lower cover plate, forms a cavity for holding the roadbed soil material extracted by the excavation device; and an excavation device is mounted on a guide rail plate, which is connected to the several guide rails.

[0006] Preferably, the excavation device of this utility model includes a rotary excavator bucket, a coupling and a motor. The rotary excavator bucket has a spiral structure and is used to excavate roadbed pits. By reversing its rotation, soil samples can be brought out. The rotary excavator bucket has several air suction holes for sucking up fine soil samples from the pits. The coupling connects the motor and the rotary excavator bucket.

[0007] Preferably, the two ends of the guide rail of this utility model are respectively connected to the upper and lower cover plates, and at least one of the guide rail surfaces is provided with a rack structure for cooperating with the gear of the guide rail motor. The guide rail motor drives the digging device to move up and down along the guide rail.

[0008] Preferably, the guide rail motor of this utility model is installed on the guide rail plate. The digging and lifting actions of the excavating device are realized by the up and down movement of the guide rail plate. One end of the guide rail motor is a gear structure, and the gear meshes with the rack on the guide rail. By rotating the guide rail motor forward and reverse, the guide rail plate can be driven to move up and down on the guide rail.

[0009] Compared with the prior art, the advantages of this utility model are:

[0010] 1. Mechanical rotary drilling is used for drilling deep pits in roadbeds, which is efficient and easy to operate.

[0011] 2. After drilling is completed, soil can be removed by reversing the drilling process. This method is convenient, effectively reduces the labor intensity of manual soil removal, and improves construction efficiency. Attached Figure Description

[0012] Figure 1 is a front view of the present invention; Figure 2 is a left view of the present invention; Figure 3 is a top view of the present invention; Figure 4 is a perspective view of the present invention; Figure 5 is a front view of the frame of the present invention; Figure 6 is a top view of the frame of the present invention; Figure 7 is a front view of the frame bucket of the present invention; Figure 8 is a top view of the frame bucket of the present invention; Figure 9 is a front view of the digging device of the present invention; Figure 10 is a left view of the digging device of the present invention; Figure 11 is a top view of the digging device of the present invention. Figure 12 is a front view of the rotary drilling bucket of this utility model; Figure 13 is a partial view of the rotary drilling bucket of this utility model; Figure 14 is a front view of the guide rail plate of this utility model; Figure 15 is a left view of the guide rail plate of this utility model; Figure 16 is a top view of the guide rail plate of this utility model; Figure 17 is a front view of the guide rail motor of this utility model; Figure 18 is a left view of the guide rail motor of this utility model; Figure 19 is a top view of the guide rail motor of this utility model; Figure 20 is a front view of the cover plate of this utility model.

[0013] In the diagram: 1. Frame; 2. Bucket; 3. Excavating device; 3-1. Rotary excavator bucket; 3-2. Coupling; 3-3. Motor; 4. Guide rail; 5. Guide rail plate; 6. Guide rail motor; 7. Cover plate; 8. Suction hole. Detailed Implementation

[0014] To make the purpose, principle and structure of this utility model clearer, the following description is provided in conjunction with the accompanying drawings and specific embodiments.

[0015] Example 1: A roadbed compaction excavation and soil extraction device mainly consists of a frame 1, a bucket 2, an excavation device 3, a guide rail 4, a guide rail plate 5, a guide rail motor 6, and a cover plate 7.

[0016] The frame 1 is made of square tubes welded together, with a length of 500mm, a width of 500mm, and a height of 1200mm. It mainly provides support for the equipment. A cover plate 7 is welded to each of the upper and lower ends of the frame 1 to store the equipment and soil. A φ200mm through hole is opened in the middle of the cover plate 7, and φ30mm through holes are also opened at both ends of the through hole. The φ200mm through hole allows the excavating device 3 to go deep for rotary excavation. The φ30mm through holes are respectively connected and fixed to two guide rails 4.

[0017] The frame hopper 2 is made of glass and surrounds the bottom of the frame 1. Together with the cover plate 7, it forms a cavity to hold the roadbed soil material taken out by the excavation device 3.

[0018] The excavation device 3 is installed and fixed on the guide rail plate 5. It mainly consists of a rotary drilling bucket 3-1, a coupling 3-2, and a motor 3-3. The rotary drilling bucket 3-1 has a diameter of φ20mm and is used to excavate roadbed pits. By reversing, it can carry out soil samples. There are two φ8mm air suction holes 8 at the bottom. Through the structure principle of a vacuum cleaner, it can automatically suck up fine soil samples from the pit, reducing the labor intensity of personnel. The coupling 3-2 is a general coupling on the market. It mainly serves to connect the motor 3-3 and the rotary drilling bucket 3-1. The motor 3-3 mainly serves the function of power transmission, providing rotary drilling power to the rotary drilling bucket 3-1.

[0019] The guide rail 4 is a cylindrical rod, with both ends engaging with the φ30mm through holes on the cover plate 7. They are arranged symmetrically on the left and right. At least one of the guide rails 4 has a rack structure on its surface, which engages with the gears of the guide rail motor 6 to realize the up and down movement of the digging device 3.

[0020] The guide plate 5 has φ40mm and φ30mm through holes. The φ40mm through hole is used to cooperate with the digging device 3, and the φ30mm through hole is used to cooperate with the guide rail 4. In addition, the guide rail motor 6 is also installed on the guide plate 5. By moving the guide plate 5 up and down, the digging device 3 can dig and lift. The bottom of the guide plate 5 is equipped with a stiffening plate 5-1 to improve the support strength.

[0021] The guide rail motor 6 is mounted on the guide rail plate 5. One end of the motor is a gear structure. The gear meshes with the rack on the guide rail 4 to form a gear and rack structure. By rotating the guide rail motor 6 forward and reverse, the guide rail plate 5 can be driven to move up and down on the guide rail 4.

[0022] The cover plate 7 is welded and fixed to the upper and lower ends of the frame 1 respectively, and has a guide rail 4 and a through hole for the excavation device 3. The cover plate 7 at the bottom of the frame 1 can also cooperate with the frame bucket 7 to form a cavity structure for loading the excavated soil.

[0023] Example 2: How to use this utility model.

[0024] Step 1: Place a roadbed compaction excavation and soil extraction device and its usage method on the roadbed surface where soil extraction is required;

[0025] Step 2: Start the equipment power and control program;

[0026] Step 3: Ensure that the excavation device 3 motor 3-3 is started and the rotary excavator bucket 3-1 is working;

[0027] Step 4: Start the guide rail motor 4 to control the guide rail plate 5 to move downwards smoothly;

[0028] Step 5: The rotary excavator bucket 3-1 digs the soil. After reaching the specified depth, the excavator device 3 motor 3-3 is reversed.

[0029] Step 6: Start the reverse guide rail motor 4 to control the digging device 3 to move upward, while the rotary digging bucket 3-1 takes out the soil sample and scatters it into the cavity formed by the frame bucket 2 and the cover plate 7.

[0030] Step 7: Reset the excavation device 3 and stop all motors. The excavation and soil removal work at this location is now complete.

[0031] Step 8: Repeat the above steps to proceed to the next task.

[0032] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and novel concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A device for taking soil samples by digging pits in subgrade compactness, characterized in that The utility model relates to a roadbed soil material taking-out device, including A frame for providing support, the frame is provided with a cover plate at both upper and lower ends, and a through hole is formed in the middle of the cover plate; A plurality of guide rails are arranged in the frame, and the two ends of the guide rails are connected to the upper and lower cover plates, respectively; A frame bucket is arranged at the bottom of the frame to enclose the bottom of the frame, and the frame bucket cooperates with the lower cover plate to form a cavity for containing the roadbed soil material taken out by the digging device; A digging device is mounted on the guide rail plate, and the guide rail plate is connected to the plurality of guide rails.

2. The embankment compactness core sampling device of claim 1, wherein The digging device comprises a rotary digging bucket, a coupling and a motor, the rotary digging bucket has a spiral structure and is used for deep digging of a roadbed pit, and the rotary digging bucket can bring out soil samples by reversing, a plurality of air suction holes are formed in the rotary digging bucket for sucking fine soil samples in the pit, and the coupling connects the motor and the rotary digging bucket.

3. The embankment compactness core sampling device of claim 1, wherein The two ends of the guide rails are connected to the upper and lower cover plates, respectively, at least one surface of one of the guide rails is provided with a rack structure for cooperating with a gear of a guide rail motor, and the guide rail motor drives the digging device to move up and down along the guide rail.

4. The embankment compactness core sampling device of claim 3, wherein The guide rail motor is mounted on the guide rail plate and moves up and down to realize the digging and lifting actions of the digging device, one end of the guide rail motor is provided with a gear structure, the gear is engaged with the rack on the guide rail, and the guide rail motor can drive the guide rail plate to move up and down on the guide rail by forward and reverse rotation.

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