Roadbed compactness detection probe device

Abstract

The utility model relates to the technical field of roadbed compactness detection, and discloses a roadbed compactness detection probe device, which solves the problems that a detection probe is inconvenient to vertically move downwards in the process of carrying out roadbed compactness detection by using a dynamic sounding method, the detection accuracy is reduced, and better practicability is inconvenient to achieve. The device comprises a bottom plate, a round opening is formed in the middle of the bottom plate in a penetrating mode, a positioning ring is fixedly installed at the top of the round opening, a probe rod assembly is fixedly installed at the top of the bottom plate, a hammering assembly is installed at the top of the probe rod assembly, the probe rod assembly comprises supporting frame plates which are symmetrically arranged, and a movable seat is arranged between the two supporting frame plates; a measuring rod is fixedly mounted in the middle of the bottom end of the movable seat; according to the utility model, in the process of detecting the compactness of the roadbed by using a dynamic sounding method, the detection probe can vertically move downwards conveniently, so that the detection accuracy is improved, and better practicability can be achieved conveniently.

Description

Technical Field

[0001] This utility model belongs to the field of roadbed compaction testing technology, specifically a roadbed compaction testing probe device. Background Technology

[0002] Subgrade compaction degree refers to the ratio of the dry density of compacted soil or other road construction materials to the standard maximum dry density, expressed as a percentage. It is one of the key indicators for testing the construction quality of subgrade and pavement. In the process of testing subgrade compaction degree, dynamic cone penetration test or sand cone test is usually used. However, when using dynamic cone penetration test for subgrade compaction degree testing, it is not convenient to move the test probe vertically downward, which reduces the accuracy of the test and makes it difficult to achieve better practicality. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a roadbed compaction testing probe device, which effectively solves the problem that it is not convenient to move the testing probe vertically downward during the process of roadbed compaction testing using the dynamic cone penetration test method, which reduces the accuracy of the test and makes it difficult to achieve better practicality.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a roadbed compaction testing probe device, comprising a base plate, a circular opening penetrating through the center of the base plate, a positioning ring fixedly installed at the top of the circular opening, a probe assembly fixedly installed at the top of the base plate, a hammering assembly installed at the top of the probe assembly, the probe assembly comprising symmetrically arranged support frames, a movable seat disposed between the two support frames, a measuring rod fixedly installed at the center of the bottom end of the movable seat, and the bottom end of the measuring rod movably penetrating through the positioning ring and extending into the interior of the circular opening, an indicator scale evenly distributed on the outer side of the measuring rod, sliding connecting blocks symmetrically fixedly installed on both sides of the movable seat, and sliding connecting grooves symmetrically penetrating through the interior of the support frames, with the sliding connecting blocks slidably penetrating and installed inside the sliding connecting grooves.

[0005] Preferably, a positioning slider is symmetrically fixedly installed on the outer side of the sliding connecting block, and a positioning groove is opened on both sides of the inner side of the sliding connecting groove, and the positioning slider is slidably installed inside the positioning groove.

[0006] Preferably, the hammering assembly includes a movable plate, which is located directly above the movable seat. A pull ring is fixedly installed at the top center of the movable plate, and a test hammer is fixedly installed at the bottom center of the movable plate, with the bottom of the test hammer contacting the top center of the movable seat.

[0007] Preferably, positioning sleeves are fixedly installed through all four corners of the movable plate, and positioning vertical rods are slidably installed through the inside of the positioning sleeves. The bottom of the positioning vertical rods is fixedly connected to the top of the movable seat, and a circular limiting block is fixedly installed at the top of the positioning vertical rods. The diameter of the circular limiting block is larger than the inner diameter of the positioning sleeves.

[0008] Preferably, threaded sleeves are fixedly installed through all four corners of the base plate, and adjusting screws are installed through the internal threads of the threaded sleeves. An adjusting block is fixedly installed on the top of the adjusting screw, and the bottom of the adjusting screw movably passes through and extends to the bottom of the base plate. A circular support plate is rotatably installed on the bottom of the adjusting screw.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1) In operation, the interaction of the base plate, circular opening, positioning ring, probe assembly and hammer assembly makes it easier to move the detection probe vertically downward during the process of using dynamic penetration test to detect roadbed compaction, thus improving the accuracy of the test and making it more practical.

[0011] 2) During operation, the interaction of the threaded sleeve, adjusting screw, adjusting block and circular support plate can provide stable support for the base plate and facilitate leveling of the base plate according to the actual situation, thereby ensuring that the device can perform better testing operations. Attached Figure Description

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0013] In the attached diagram:

[0014] Figure 1 This is a schematic diagram of the structure of a roadbed compaction detection probe device according to the present invention;

[0015] Figure 2 This is a schematic diagram of the base plate structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the probe assembly structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the support frame structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the movable seat structure of this utility model;

[0019] Figure 6This is a schematic diagram of the hammering assembly structure of this utility model.

[0020] In the diagram: 1. Base plate; 2. Circular opening; 3. Positioning ring; 4. Probe assembly; 5. Hammer assembly; 6. Support plate; 7. Movable seat; 8. Measuring rod; 9. Indicating scale; 10. Sliding connecting block; 11. Sliding connecting groove; 12. Positioning slider; 13. Positioning slide groove; 14. Movable plate; 15. Pull ring; 16. Test hammer; 17. Positioning sliding sleeve; 18. Positioning vertical rod; 19. Circular limit block; 20. Threaded sleeve; 21. Adjusting screw; 22. Adjusting block; 23. Circular support plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. 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 without creative effort are within the protection scope of the present utility model.

[0022] Example 1, by Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The present invention relates to a roadbed compaction testing probe device, comprising a base plate 1, threaded sleeves 20 fixedly installed through the four corners of the base plate 1, adjusting screws 21 being installed through the internal threads of the threaded sleeves 20, adjusting blocks 22 being fixedly installed at the top of the adjusting screws 21, the bottom of the adjusting screws 21 being movably inserted through and extending to the bottom of the base plate 1, a circular support plate 23 being rotatably installed at the bottom of the adjusting screws 21, a circular opening 2 being opened through the middle of the base plate 1, a positioning ring 3 being fixedly installed at the top of the circular opening 2, a probe assembly 4 being fixedly installed at the top of the base plate 1, and a hammering assembly 5 being installed at the top of the probe assembly 4;

[0023] The probe assembly 4 includes symmetrically arranged support plates 6, with a movable seat 7 between the two support plates 6. A measuring rod 8 is fixedly installed at the bottom center of the movable seat 7, and the bottom end of the measuring rod 8 movably passes through the positioning ring 3 and extends into the interior of the circular opening 2. Indicating scales 9 are evenly distributed on the outer side of the measuring rod 8. Sliding connecting blocks 10 are symmetrically fixedly installed on both sides of the movable seat 7. A sliding connecting groove 11 is symmetrically opened through the interior of the support plate 6, and the sliding connecting block 10 is slidably installed through the interior of the sliding connecting groove 11. A positioning slider 12 is symmetrically fixedly installed on the outer side of the sliding connecting block 10. A positioning groove 13 is opened on both sides of the interior of the sliding connecting groove 11, and the positioning slider 12 is slidably installed inside the positioning groove 13.

[0024] The hammering assembly 5 includes a movable plate 14, which is located directly above the movable seat 7. A pull ring 15 is fixedly installed at the top center of the movable plate 14, and a test hammer 16 is fixedly installed at the bottom center of the movable plate 14. The bottom of the test hammer 16 contacts the top center of the movable seat 7. Positioning sleeves 17 are fixedly installed through the four corners of the movable plate 14. A positioning vertical rod 18 is slidably installed through the inside of the positioning sleeve 17. The bottom of the positioning vertical rod 18 is fixedly connected to the top of the movable seat 7. A circular limiting block 19 is fixedly installed at the top of the positioning vertical rod 18. The diameter of the circular limiting block 19 is larger than the inner diameter of the positioning sleeve 17.

[0025] In use, the interaction of the base plate 1, circular opening 2, positioning ring 3, probe assembly 4, and hammer assembly 5 facilitates the vertical downward movement of the detection probe during the dynamic penetration test for roadbed compaction, improving detection accuracy and enhancing practicality. Furthermore, the interaction of the threaded sleeve 20, adjusting screw 21, adjusting block 22, and circular support plate 23 ensures stable support for the base plate 1 during use and allows for leveling adjustments based on actual conditions, thus ensuring better detection performance of the device.

[0026] Working principle: During operation, the base plate 1 is first placed on the roadbed surface to be tested. Then, by rotating the four adjusting screws 21 at the four corners of the base plate 1 through the adjusting block 22, the circular support plate 23 is adjusted up and down under the action of the threaded sleeve 20, thereby adjusting the base plate 1 to a horizontal state. After the base plate 1 is adjusted to a horizontal state, the bottom of the measuring rod 8 contacts the top of the roadbed surface within the range of the circular opening 2. At this time, the scale value at the position where the top of the positioning ring 3 is flush with the outer indicator scale 9 of the measuring rod 8 is recorded. Then, the pull ring 15 is pulled upward, causing the movable plate 14 to move upward. The movable plate 14 causes the positioning slide sleeve 17 to slide on the outside of the positioning vertical rod 18. At the same time, the movable plate 14 causes the test hammer 16 to move upward. After the top of the positioning slide sleeve 17 contacts the bottom of the circular limit block 19, the pull ring 15 is released. At this time, under the action of gravity, the test hammer 16 moves downward and impacts the top center of the movable seat 7. The movable seat 7 retracts. The impact causes the measuring rod 8 to move downwards, while the movable seat 7 drives the sliding connecting block 10 to slide inside the sliding connecting groove 11. The sliding connecting block 10 drives the positioning slider 12 to slide inside the positioning groove 13, ensuring better stability of the movable seat 7 during movement. At the same time, the measuring rod 8 is inserted into the roadbed under the impact force, and the scale value at the position where the top of the positioning ring 3 is flush with the outer indicator scale 9 of the measuring rod 8 is recorded again. This cycle is repeated. Based on the depth of the measuring rod 8 inserted into the roadbed and the corresponding number of hammer blows, a hammer blow count and depth curve is plotted. Then, based on the different characteristics of the hammer blow count and depth relationship curves corresponding to different roadbed compaction degrees, the roadbed compaction degree is evaluated by comparing with the standard curve or empirical curve. This makes it easier to move the detection probe vertically downwards during the roadbed compaction degree detection process using the dynamic penetration test method, improving the accuracy of the detection and thus achieving better practicality.

Claims

1. A roadbed compaction testing probe device, comprising a base plate (1), characterized in that: A circular opening (2) is provided through the middle of the base plate (1). A positioning ring (3) is fixedly installed on the top of the circular opening (2). A probe assembly (4) is fixedly installed on the top of the base plate (1). A hammer assembly (5) is installed on the top of the probe assembly (4). The probe assembly (4) includes symmetrically arranged support plates (6). A movable seat (7) is provided between the two support plates (6). A measuring rod (8) is fixedly installed at the middle of the bottom end of the movable seat (7). The bottom end of the measuring rod (8) is movably passed through the positioning ring (3) and extends into the interior of the circular opening (2). Indicator scales (9) are evenly provided on the outer side of the measuring rod (8). Sliding connecting blocks (10) are symmetrically fixedly installed on both sides of the movable seat (7). A sliding connecting groove (11) is symmetrically provided through the interior of the support plate (6). The sliding connecting block (10) is slidably installed through the interior of the sliding connecting groove (11).

2. The roadbed compaction detection probe device according to claim 1, characterized in that: The sliding connecting block (10) is symmetrically fixedly installed with positioning sliders (12) on the outside. The sliding connecting groove (11) has positioning grooves (13) on both sides inside, and the positioning sliders (12) are slidably installed inside the positioning grooves (13).

3. The roadbed compaction detection probe device according to claim 1, characterized in that: The hammering assembly (5) includes a movable plate (14), which is located directly above the movable seat (7). A pull ring (15) is fixedly installed at the top center of the movable plate (14), and a test hammer (16) is fixedly installed at the bottom center of the movable plate (14). The bottom of the test hammer (16) is in contact with the top center of the movable seat (7).

4. The roadbed compaction detection probe device according to claim 3, characterized in that: The four corners of the movable plate (14) are fixedly fitted with positioning sleeves (17), and the inside of the positioning sleeves (17) is fitted with positioning vertical rods (18). The bottom of the positioning vertical rods (18) is fixedly connected to the top of the movable seat (7). The top of the positioning vertical rods (18) is fixedly fitted with circular limiting blocks (19), and the diameter of the circular limiting blocks (19) is larger than the inner diameter of the positioning sleeves (17).

5. The roadbed compaction detection probe device according to claim 1, characterized in that: The four corners of the base plate (1) are fixedly fitted with threaded sleeves (20), and the internal threads of the threaded sleeves (20) are fitted with adjusting screws (21). The top of the adjusting screws (21) is fixedly fitted with adjusting blocks (22), and the bottom of the adjusting screws (21) extends movably through and to the bottom of the base plate (1). The bottom of the adjusting screws (21) is rotatably fitted with a circular support plate (23).

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