Portable highway subgrade compactness detection device

Abstract

The utility model relates to roadbed quality detection equipment technical field, specifically disclose portable highway roadbed compactness detection device, including ring cutter, its top is equipped with hammering column body, the cavity that has with ring cutter intercommunication in the middle part of column body, inner sleeve stand, the bottom of stand has the pressing plate, the top of column body opens the internal thread hole, the bottom end of outer wall has the abutment ring, ring cutter is covered in the ring disc, and the abutment ring is above the ring disc, and the top of ring disc is connected with the pry bar through U type hinged seat and the stand, and there is pry block and support platform in the end head groove of pry bar, and the bottom of pry block has bevel A, and the outer wall of column body has a plurality of cooperation piece, and the top has bevel B, and the bottom is flat, the ring cutter of the device can be deeply inserted into the roadbed soil, the pry bar is quickly assembled with the stand, the pry block is one-way turned over upwards, and the ring cutter can be easily taken out by repeatedly shaking the pry bar with the principle of lever; screw rod and internal thread hole cooperate, and the stand is driven to descend, and the pressing plate can squeeze out the soil to be detected in the ring cutter, so as to solve the problem that the ring cutter is inconvenient to take out and sample after being inserted into the soil.

Description

Technical Field

[0001] This utility model relates to the technical field of roadbed quality testing equipment, and more specifically, to a portable highway roadbed compaction testing device. Background Technology

[0002] In the construction and maintenance of highways, the testing of subgrade compaction is a crucial step in ensuring road quality and stability. The ring cutter method, a commonly used method for testing subgrade compaction, is widely applied in practical engineering. However, existing ring cutter testing devices suffer from several inconveniences. Firstly, after the ring cutter is deeply inserted into the subgrade soil for sampling, the significant friction and adhesion between the soil and the ring make it difficult to lift and remove the ring vertically. Traditional methods often require substantial manpower and even auxiliary tools, which is not only cumbersome and inefficient but may also damage the sampled soil, affecting the accuracy of the test results. Secondly, when removing the soil from the ring cutter, the confined space and tight adhesion between the soil and the inner wall make it difficult to remove the soil completely and easily. This hinders subsequent testing, increasing the difficulty and cost of the testing process. Therefore, developing a portable highway subgrade compaction testing device that can easily remove the ring cutter inserted into the soil and readily extract the soil from within it is of significant practical importance. Utility Model Content

[0003] In view of the above-mentioned technical problems in related technologies, this utility model provides a portable highway subgrade compaction testing device, which can solve the above problems.

[0004] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows: A portable highway subgrade compaction testing device includes a ring cutter. A hammer column is fixedly installed on the top of the ring cutter. A through cavity communicating with the inside of the ring cutter is opened in the middle of the hammer column. A first column is fitted inside the through cavity. A pressure plate is fixedly installed at the bottom of the first column. An internal threaded hole is opened on the top of the hammer column. An abutment ring is integrally formed at the bottom of the outer wall of the hammer column. The ring cutter is fitted inside the ring disc. The abutment ring is supported above the ring disc. A second column is fixedly installed on the top of the second column. A U-shaped hinge seat is fixedly installed on the top of the U-shaped hinge seat. A pry bar is hinged to the U-shaped hinge seat by a shaft pin. A groove is opened at the end of the pry bar. A pry block is hingedly installed inside the groove. A support platform is fixedly installed at the bottom of the groove. An inclined surface A is opened at the bottom end of the pry block. Several mating blocks are fixedly installed vertically at equal intervals on the outer wall of the hammer column. An inclined surface B is opened on the top of the mating blocks. The bottom of the mating blocks is a flat surface.

[0005] Furthermore, a cylinder and a base are fixedly installed on one side of the hammering column. The base is located directly below the cylinder. A screw is installed inside the cylinder, and an L-shaped handle is integrally formed at the top of the screw.

[0006] Furthermore, a pad is fixedly installed at the bottom of the screw.

[0007] Furthermore, a rubber pad is bonded and fixed to the top of the hammer-driven column, and a through hole with the center of the rubber pad aligned vertically with the internal thread hole is provided.

[0008] Furthermore, a diagonal extension rod is provided at the end of the pry bar opposite to the pry block.

[0009] The beneficial effects of this utility model are as follows: The device of this application inserts the ring cutter deep into the roadbed soil, and the pry bar is quickly assembled with the top of the column through the shaft pin. The pry bar end is provided with a pry block that flips upward in one direction. With the cooperation of hammering the side of the column, the ring cutter can be easily lifted and taken out of the soil by repeatedly shaking the pry bar using the lever principle. This solves the problem that the existing ring cutter is inconvenient to lift and take out vertically after being inserted into the soil. By engaging the screw with the internal threaded hole at the top of the hammer column, rotating the screw pushes the column down, and the pressure plate can squeeze out the soil to be inspected inside the ring cutter, making it easy to remove the soil to be inspected from inside the ring cutter. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] The present invention will now be described in further detail with reference to the accompanying drawings.

[0012] Figure 1 This is a 3D view of a portable highway subgrade compaction testing device; Figure 2 This is a cross-sectional view of the hammered column; Figure 3 This is a schematic diagram of the pry bar.

[0013] In the picture: 1. Ring cutter; 2. Hammered column; 3. Abutment ring; 4. Ring disc; 5. Mating block; 7. Column II; 8. Shaft pin; 9. Pry bar; 10. Support platform; 11. Pry bar; 1101. Inclined surface A; 12. Rubber pad; 13. Cylinder; 14. Screw; 1401. L-shaped handle; 1402. Pad platform; 15. Base platform; 16. Column I; 17. Pressure plate; 18. Internal threaded hole. Detailed Implementation

[0014] 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, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0015] like Figure 1-3 As shown, this utility model discloses a portable highway subgrade compaction testing device, including a ring cutter 1, a hammer column 2 fixedly installed on the top of the ring cutter 1, a through cavity communicating with the inside of the ring cutter 1 in the middle of the hammer column 2, a column 16 sleeved inside the through cavity, a pressure plate 17 fixedly installed at the bottom of the column 16, an internal threaded hole 18 on the top of the hammer column 2, and an abutment ring 3 integrally formed at the bottom of the outer wall of the hammer column 2. The ring cutter 1 is sleeved inside a ring plate 4, and the abutment ring 3 is supported by the ring plate 4. Above, a column 2 7 is fixedly installed on the top of the ring 4. A U-shaped hinge seat is fixedly installed on the top of the column 2 7. A pry bar 9 is hinged to the U-shaped hinge seat through a shaft pin 8. A groove is opened at the end of the pry bar 9. A pry block 11 is hingedly installed inside the groove. A support platform 10 is fixedly installed at the bottom of the groove. An inclined surface A1101 is opened at the bottom end of the pry block 11. Several mating blocks 5 are fixedly installed vertically at equal intervals on the outer wall of the hammer-driven column 2. An inclined surface B is opened at the top of the mating block 5. The bottom of the mating block 5 is a flat surface.

[0016] Example 1: The outer diameter of the hammering column 2 is the same as that of the ring cutter 1. The abutment ring 3 is located at the joint between the hammering column 2 and the ring cutter 1. The abutment ring 3 is welded and fixed to the outer wall of the hammering column 2. The second column 7 is installed vertically from the inside of the ring cutter 1, and the pressure plate 17 abuts against the top of the inside of the ring cutter 1. The pry bar 9 is hinged to the U-shaped hinge seat at the top of the column 2 7 via the shaft pin 8. The end of the pry bar 9 is hinged to a pry block 11. When the pry block 11 is in a horizontal state, it is supported on the surface of the support platform 10. The pry block 11 can rotate counterclockwise around the top. When the left end of the pry bar 9 is raised, the pry block 11 will rotate counterclockwise around the top after it touches the mating block 5. When the left end of the pry bar 9 is pressed down, the flat surface at the top of the pry block 11 will contact the flat surface at the bottom of the mating block 5. The hammer-striking column 2 is lifted by lever principle. By repeatedly pressing and lifting the pry bar 9, the hammer-striking column 2 can be gradually lifted.

[0017] In the preferred technical solution, a cylinder 13 and a base 15 are fixedly installed on one side of the hammering column 2. The base 15 is located directly below the cylinder 13. A screw 14 is sleeved inside the cylinder 13. An L-shaped handle 1401 is integrally formed at the top of the screw 14. The L-shaped handle 1401 facilitates the rotation of the screw 14, thereby controlling the lifting and lowering of the screw 14.

[0018] In the preferred technical solution, a pad 1402 is fixedly installed at the bottom of the screw 14. The pad 1402 is used to protect the threads at the bottom of the screw 14 and replace the bottom of the screw 14 in contact with the column 16.

[0019] In the preferred technical solution, a rubber pad 12 is bonded and fixedly installed on the top of the hammering column 2. The rubber pad 12 has a through hole in the middle that is vertically aligned with the internal thread hole 18. The rubber pad 12 is used to contact the hammer and protect the hammering column 2.

[0020] In the preferred technical solution, the end of the pry bar 9 that is away from the pry block 11 is provided with an inclined extension rod, and the design of the inclined extension rod is convenient and labor-saving.

[0021] In practical use, the ring cutter 1 is brought into contact with the soil, and the rubber pad 12 on the top of the hammering column 2 is struck with the hammer body to drive the ring cutter 1 deep into the soil until the ring plate 4 contacts the soil surface. The pry bar 9 is repeatedly shaken up and down to lift the hammering column 2, thereby lifting the ring cutter 1. The screw 14 is engaged with the internal threaded hole 18 on the top of the hammering column 2. Rotating the screw 14 pushes the column 16 down, and the pressure plate 17 can squeeze out the soil to be inspected inside the ring cutter 1, making it easy to remove the soil to be inspected inside the ring cutter 1.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable highway subgrade compaction testing device, characterized in that, The device includes a ring cutter (1), a hammering column (2) fixedly mounted on the top of the ring cutter (1), a through cavity communicating with the inside of the ring cutter (1) in the middle of the hammering column (2), a first column (16) sleeved inside the through cavity, a pressure plate (17) fixedly mounted on the bottom of the first column (16), an internal threaded hole (18) on the top of the hammering column (2), an abutment ring (3) integrally formed on the bottom of the outer wall of the hammering column (2), the ring cutter (1) sleeved inside the ring disc (4), the abutment ring (3) supported above the ring disc (4), and the top of the ring disc (4) fixed. The column 2 (7) is installed, and a U-shaped hinge seat is fixedly installed on the top of the column 2 (7). A pry bar (9) is hinged to the U-shaped hinge seat through a shaft pin (8). A groove is opened at the end of the pry bar (9). A pry block (11) is hingedly installed inside the groove. A support platform (10) is fixedly installed at the bottom of the groove. An inclined surface A (1101) is opened at the bottom end of the pry block (11). Several mating blocks (5) are fixedly installed vertically at equal intervals on the outer wall of the hammer-strike column (2). An inclined surface B is opened at the top of the mating block (5). The bottom of the mating block (5) is a flat surface.

2. The portable highway subgrade compaction testing device according to claim 1, characterized in that, A cylinder (13) and a base (15) are fixedly installed on one side of the hammering column (2). The base (15) is located directly below the cylinder (13). A screw (14) is sleeved inside the cylinder (13). An L-shaped handle (1401) is integrally formed at the top of the screw (14).

3. The portable highway subgrade compaction testing device according to claim 2, characterized in that, A pad (1402) is fixedly installed at the bottom of the screw (14).

4. The portable highway subgrade compaction testing device according to claim 1, characterized in that, A rubber pad (12) is bonded and fixed to the top of the hammer column (2), and a through hole is provided in the middle of the rubber pad (12) that is vertically aligned with the internal thread hole (18).

5. The portable highway subgrade compaction testing device according to claim 1, characterized in that, The pry bar (9) has an inclined extension bar at the end opposite to the pry bar (11).

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