A kind of auxiliary sampling device for ring knife method roadbed compactness detection

Abstract

The utility model discloses a kind of for ring knife method roadbed compactness detection's auxiliary sampling device, belong to roadbed compactness detection equipment technical field, including sampling box, sampling box is equipped with the first opening for ring knife to go out, and the second opening of the lateral wall of sampling box is penetrated, the orientation of first opening and second opening is perpendicular, the shape and size of second opening are adapted with ring knife inner ring, the inner wall of sampling box opposite to first opening is arc inner wall, sampling box side is equipped with connecting seat, connecting seat is fixedly connected with sampling box, connecting seat is equipped with the threaded rod of being connected with its screw thread, the axis of threaded rod passes through the center of second opening, the one end of threaded rod in sampling box is equipped with push plate, the shape and size of push plate are adapted with ring knife inner ring, when ring knife and arc inner wall abut, the axis of ring knife passes through the center of second opening. The utility model sampling operation is convenient, and it is favorable to standardization sampling, to guarantee detection accuracy.

Description

Technical Field

[0001] This utility model belongs to the technical field of roadbed compaction testing equipment, and specifically relates to an auxiliary sampling device for roadbed compaction testing using the ring cutter method. Background Technology

[0002] In the quality inspection of roadbed construction, the ring cutter method is a commonly used method for determining the compaction degree of the roadbed. The ring cutter method involves cutting and removing a certain volume of roadbed soil sample using a ring cutter, and then determining the compaction degree by measuring the ratio of the dry density of the soil sample to the maximum dry density.

[0003] In the existing ring sampler method, after sampling with the ring sampler, the excess soil sample on both sides of the ring sampler opening needs to be scraped off with a scraper. Then, the ring sampler needs to be tapped around its circumference. The vibration generated by the tapping causes the soil sample to separate from the inner wall of the ring sampler, thus removing the soil sample from inside the ring sampler.

[0004] During the process of extracting soil samples from the ring cutter, manual scraping can lead to uneven scraping due to varying observation angles of the operators, resulting in soil samples that are either too large or too small. On the other hand, when using tapping tools for sample extraction, different tapping tools can easily damage the ring cutter, making it unsuitable for long-term use, and the overall efficiency of the sampling process is relatively low. Utility Model Content

[0005] The purpose of this invention is to provide an auxiliary sampling device for detecting the compaction degree of roadbed using the ring cutter method, aiming to solve the problems existing in the prior art mentioned above.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An auxiliary sampling device for detecting the compaction degree of roadbed using the ring cutter method includes a sampling box. The sampling box has a hollow structure and a first opening for the ring cutter to enter and exit, and a second opening penetrating both side walls of the sampling box. The first opening and the second opening are perpendicular to each other. The shape and size of the second opening are adapted to the inner ring of the ring cutter. The inner wall of the sampling box opposite to the first opening is an arc-shaped inner wall. A connecting seat is provided on one side of the sampling box. The connecting seat is fixedly connected to the sampling box. A threaded rod threadedly connected to the connecting seat passes through the connecting seat. The axis of the threaded rod passes through the center of the second opening. A push plate is provided at one end of the threaded rod inside the sampling box. The shape and size of the push plate are adapted to the inner ring of the ring cutter. When the ring cutter abuts against the arc-shaped inner wall, the axis of the ring cutter passes through the center of the second opening. The threaded rod is used to push the push plate to extract the soil sample from the ring cutter through the second opening.

[0007] Furthermore, the first opening is rectangular and its size is adapted to the ring cutter. A scraper is provided on the outside of the first opening, which is used to scrape off excess soil sample from the openings on both sides of the ring cutter.

[0008] Furthermore, the sampling box is provided with a baffle that slides with it, the baffle being used to limit the ring cutter from abutting against the arc-shaped inner wall.

[0009] Furthermore, a ring plate is provided on the outer side of the second opening away from the connecting seat, and a flange is provided on the outer edge of the ring plate.

[0010] Furthermore, the bottom of the sampling box is provided with a support base, which includes a vertically connected support rod and a base, and the support rod is fixedly connected to the bottom surface of the sampling box.

[0011] Furthermore, the sampling box has a first sliding groove on the side wall of the first opening, and a limiting groove on the inner wall of the sampling box opposite to the first sliding groove. The connecting seat has a second sliding groove corresponding to the first sliding groove. The limiting groove, the first sliding groove and the second sliding groove have the same shape and size. The baffle has a T-shaped structure, including a first side plate and a second side plate that are vertically connected. The first side plate slides through the first sliding groove and the second sliding groove. When the first side plate is inserted into the limiting groove, the first side plate limits the ring cutter.

[0012] Compared with the shortcomings and deficiencies of the prior art, the present invention has the following beneficial effects.

[0013] 1. The auxiliary sampling device of this utility model positions the ring cutter inside the sampling box. By pushing the push plate with the threaded rod, the soil sample inside the ring cutter can be smoothly pushed out along the second opening. Compared with the existing knocking sampling method, the push plate is adapted to the inner ring of the ring cutter, and the threaded rod can be rotated, making the operation convenient and helping to quickly and completely sample.

[0014] 2. A scraper is installed at the first opening. When the ring cutter is pushed into the first opening, the scraper will scrape off the excess soil sample, which solves the problem of soil sample volume deviation caused by existing manual scraping. The sampling box is equipped with a sliding baffle, so that the ring cutter is in close contact with the arc-shaped inner wall when the soil sample is discharged, avoiding positional deviation that affects the sampling accuracy. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the auxiliary sampling device in this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the sampling box and the push plate in this utility model.

[0017] Figure 3 This is a schematic diagram of the sampling box with baffles in this utility model.

[0018] Figure 4 This is a schematic diagram of the internal structure of the sampling box in this utility model.

[0019] In the diagram: 10. Sampling box; 11. First opening; 12. Second opening; 13. Arc-shaped inner wall; 14. Scraper; 15. First groove; 16. Limiting groove; 20. Connecting seat; 21. Threaded hole; 22. Second groove; 30. Threaded rod; 31. Push plate; 32. Handheld part; 40. Support seat; 41. Base; 42. Support rod; 50. Ring plate; 51. Flange; 60. Baffle; 61. First side plate; 62. Second side plate. Detailed Implementation

[0020] 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.

[0021] Reference Figure 1 This utility model discloses an auxiliary sampling device for detecting the compaction degree of roadbed using the ring cutter method. It includes a sampling box 10, which is a hollow structure used for quickly extracting soil samples from the ring cutter. The sampling box 10 has a first opening 11 and a second opening 12. The first opening 11 is used for introducing or removing the ring cutter from the sampling box 10. The second opening 12 penetrates the front and rear side walls of the sampling box 10, and its shape and size are the same as the inner ring of the ring cutter. The first opening 11 and the second opening 12 are perpendicular to each other. The inner wall of the sampling box 10 opposite to the first opening 11 is an arc-shaped inner wall 13, which is adapted to the outer ring size of the ring cutter; that is, the radius of curvature of the arc-shaped inner wall 13 matches the radius of curvature of the outer wall of the ring cutter. When the ring cutter abuts against the arc-shaped inner wall 13, the axis of the ring cutter is collinear with the line connecting the centers of the two second openings 12.

[0022] Reference Figure 2 A connecting seat 20 is located on one side of the second opening 12. The connecting seat 20 is connected to the sampling box 10 via a connecting rod. The connecting seat 20 has a threaded hole 21, and a threaded rod 30 is threadedly connected to the connecting seat 20 through the threaded hole 21. The axis of the threaded rod 30 passes through the center of the second opening 12. One end of the threaded rod 30 is located inside the sampling box 10, and its end is provided with a push plate 31. The shape and size of the push plate 31 are the same as the inner ring of the ring cutter. The threaded rod 30 is vertically connected to the center position on one side of the push plate 31, and a handle 32 is provided at the other end of the threaded rod 30. The handle 32 is used to drive the threaded rod 30 to rotate, thereby driving the push plate 31 to push the soil sample in the ring cutter out along one side of the second opening 12.

[0023] In one embodiment, the first opening 11 has a rectangular structure and its size is adapted to the ring cutter (see reference). Figure 3 A scraper 14 is provided outside the first opening 11. The scraper 14 is arranged along the edge of the first opening 11, and the length of the scraper 14 is the same as the length of the edge of the first opening 11 (see reference). Figure 1 The first opening 11 has scrapers 14 on both sides. When the ring cutter is pushed into the sampling box 10 along the first opening 11, the scrapers 14 are used to smooth the soil sample overflowing from both ends of the ring cutter, ensuring that the volume of the soil sample is consistent with the volume of the ring cutter.

[0024] In one embodiment, refer to Figure 3 and Figure 4 The sampling box 10 is slidably fitted with a baffle 60, which limits the ring cutter and keeps it abutting against the arc-shaped inner wall 13. Specifically, the sampling box 10 located on one side of the first opening 11 has a first groove 15 connecting the inside and outside of the sampling box 10. Opposite, the inner wall of the sampling box 10 has a limiting groove 16, and the connecting seat 20 has a second groove 22 that aligns with the first groove 15. The limiting groove 16, the first groove 15, and the second groove 22 have the same shape and size. The baffle 60 has a T-shaped structure, including a first side plate 61 and a second side plate 62. The first side plate 61 slides through the first groove 15 and the second groove 22, and the second side plate 62 is located outside the second groove 22. When the baffle 60 limits the ring cutter, the end of the first side plate 61 is inserted into the limiting groove 16.

[0025] In one embodiment, refer to Figure 2 and Figure 3 A ring plate 50 is provided on the outer side of the second opening 12, located away from the connecting seat 20. The ring plate 50 has the same size as the second opening 12. An annular flange 51 is provided on the outer edge of the ring plate 50. The annular flange 51 cooperates with the ring plate 50 to make its cross-section L-shaped. During sampling, a sampling bag can be placed on the ring plate 50 and tied with a thin rope or elastic rope to secure the sampling bag. The annular flange 51 is used to prevent the thin rope or elastic rope from slipping off. In actual operation, a polyethylene sealed bag or a standard soil sample bag can be used for the sampling bag. In one embodiment, the sampling box 10 is provided with a support base 40 at its bottom. The support base 40 is used to support the sampling box 10 to a certain height for easy manual operation. The support base 40 includes a base 41, and a support rod 42 is vertically connected to the center of the base 41. The top end of the support rod 42 is fixedly connected to the sampling box 10.

[0026] When using this auxiliary sampling device for roadbed compaction testing using the ring cutter method: First, the sampled ring cutter is pushed into the sampling box 10 through the first opening 11. During the pushing process, the scrapers 14 on both sides can accurately scrape off the excess soil sample at the openings on both sides of the ring cutter, so that the volume of the soil sample inside the ring cutter is the same as the volume of the ring cutter.

[0027] Subsequently, the ring cutter is pushed to abut against the arc-shaped inner wall 13 inside the sampling box 10. At the same time, the baffle 60 is inserted so that the end of the first side plate 61 is precisely inserted into the limiting groove 16, thereby completing the limiting and fixing of the ring cutter and preventing the ring cutter from shifting position.

[0028] Next, the sampling bag is placed on the ring plate 50 and secured with thin rope or elastic rope to effectively prevent the sampling bag from falling off during the material receiving process.

[0029] Finally, rotate the hand-held part 32 to make the threaded rod 30 rotate at a constant speed. With the cooperation of the threaded hole 21, the threaded rod 30 pushes the push plate 31 to move smoothly, pushing the soil sample in the ring cutter completely out into the sampling bag along the second opening 12, thereby realizing the quick and convenient removal of the soil sample in the ring cutter.

[0030] 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 and improvements 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. An auxiliary sampling device for detecting the compaction degree of roadbed using the ring cutter method, characterized in that, The sample box (10) is hollow and has a first opening (11) for the ring cutter to enter and exit, and a second opening (12) penetrating the side walls of both sides of the sample box (10). The first opening (11) and the second opening (12) are perpendicular to each other. The shape and size of the second opening (12) are adapted to the inner ring of the ring cutter. The inner wall of the sample box (10) opposite to the first opening (11) is an arc-shaped inner wall (13). A connecting seat (20) is provided on one side of the sample box (10). The connecting seat (20) is connected to the sampling... The sample box (10) is fixedly connected, and the connecting seat (20) is threaded with a threaded rod (30) that is threadedly connected to it. The axis of the threaded rod (30) passes through the center of the second opening (12). The end of the threaded rod (30) located inside the sample box (10) is provided with a push plate (31). The shape and size of the push plate (31) are adapted to the inner ring of the ring cutter. When the ring cutter abuts against the arc-shaped inner wall (13), the axis of the ring cutter passes through the center of the second opening (12). The threaded rod (30) is used to push the push plate (31) to export the soil sample inside the ring cutter from the second opening (12).

2. The auxiliary sampling device as described in claim 1, characterized in that, The first opening (11) is rectangular and its size is adapted to the ring cutter. A scraper (14) is provided on the outside of the first opening (11). The scraper (14) is used to scrape off excess soil sample from the openings on both sides of the ring cutter.

3. The auxiliary sampling device as described in claim 1, characterized in that, The sampling box (10) is provided with a baffle (60) that slides with it, and the baffle (60) is used to limit the ring knife from abutting against the arc-shaped inner wall (13).

4. The auxiliary sampling device as described in claim 1, characterized in that, A ring plate (50) is provided on the outer side of the second opening (12) away from the connecting seat (20), and a flange (51) is provided on the outer edge of the ring plate (50).

5. The auxiliary sampling device as described in claim 1, characterized in that, The sampling box (10) is provided with a support base (40) at the bottom. The support base (40) includes a vertically connected support rod (42) and a base (41). The support rod (42) is fixedly connected to the bottom surface of the sampling box (10).

6. The auxiliary sampling device as described in claim 3, characterized in that, The sampling box (10) has a first groove (15) on the side wall of the first opening (11) and a limiting groove (16) on the inner wall of the sampling box (10) opposite to the first groove (15). The connecting seat (20) has a second groove (22) corresponding to the first groove (15). The limiting groove (16), the first groove (15) and the second groove (22) have the same shape and size. The baffle (60) has a T-shaped structure and includes a first side plate (61) and a second side plate (62) connected vertically. The first side plate (61) slides through the first groove (15) and the second groove (22). When the first side plate (61) is inserted into the limiting groove (16), the first side plate (61) limits the ring cutter.

Images