Rapid sampling device for detecting compactness

Abstract

The invention discloses a rapid sampling device for detecting compactness, and relates to the technical field of engineering detection. The device comprises a vehicle-mounted lifting frame, a sampling supporting beam and a sampling rotating frame, the vehicle-mounted lifting frame comprises a mounting back plate; a hydraulic lifting cylinder is fixed on the mounting back plate; a sampling support beam is fixed on the hydraulic lifting cylinder; an equipment mounting seat is fixed on the sampling supporting beam, and a driving mechanism is fixed on the equipment mounting seat; the sampling supporting beam is rotationally matched with a sampling rotating frame, and the sampling rotating frame comprises a rotating ring and a poke rod; poke rods are arrayed on the rotating ring; a sampling assembly is fixed on the poke rod; the sampling assembly is in meshing transmission with the driving mechanism; the sampling assembly is used for sampling soil on the road surface by a cutting ring method. Under the action of the sampling supporting beam and the sampling rotating frame, the operations of surface soil scraping, surface soil sweeping, cutting ring sampling and the like are automatically and sequentially completed, meanwhile, a soil layer is cut away, and the supporting effect of soil in a cutting ring is guaranteed; the sampling efficiency is improved, and the sampling success rate and the sampling effect are guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering detection, and particularly relates to a rapid sampling device for detecting compaction degree. Background Art

[0002] The compaction degree, also known as the tamping degree, refers to the ratio of the dry density of soil or other road-building materials after compaction to the standard maximum dry density. The detection of the subgrade compaction degree in highway engineering is one of the very key indicators in the construction process of the subgrade and pavement. It directly affects the quality control of the project construction. The higher the compaction degree of the road, the greater its density, the better the overall performance, and the longer the service life of the road. Therefore, the detection of the subgrade compaction degree in highway engineering is of crucial importance. Currently, the general methods for detecting compaction degree include the sand replacement method, the nuclear gauge method, the core cutter method, etc. Among them, the core cutter method mainly inserts the core cutter into the subgrade soil to be detected for sampling, and then detects the volume and weight of the sampled soil, and then calculates the density of the sampled soil. By comparing it with the standard density, it can be known whether the compaction degree of the subgrade is qualified.

[0003] However, when sampling with the existing core cutter method, if manual sampling is used, there are problems such as cumbersome operation, high labor intensity, and low sampling efficiency. When sampling with the existing sampling equipment, although the efficiency has increased, it is difficult to ensure the timely separation of the soil under the core cutter from the soil inside it and the non-shedding of the sampled soil on the inner side of the core cutter. In view of the problems of low sampling efficiency and difficulty in ensuring the sampling effect pointed out above, the invention designs a rapid sampling device for detecting compaction degree. Summary of the Invention

[0004] The purpose of the invention is to provide a rapid sampling device for detecting compaction degree. Through the action of the sampling support beam and the sampling rotating frame, operations such as floating soil scraping, floating soil sweeping, and core cutter sampling are automatically completed in sequence. At the same time, the soil layer is separated and the supporting effect of the soil in the core cutter is ensured, solving the problems of low sampling efficiency and difficulty in ensuring the sampling effect pointed out above.

[0005] To solve the above technical problems, the invention is realized through the following technical solutions:

[0006] The invention discloses a fast sampling device for detecting compaction degree, comprising a vehicle-mounted lifting frame, a sampling support beam and a sampling rotating frame; the vehicle-mounted lifting frame comprises a mounting back plate and a hydraulic lifting cylinder; the inner side surface of the mounting back plate is fixedly mounted on the vehicle; the outer side surface of the mounting back plate is fixedly mounted with a hydraulic lifting cylinder; the telescopic end of the hydraulic lifting cylinder is fixedly mounted with a sampling support beam; the middle part of the sampling support beam is fixedly mounted with an equipment mounting seat, and the bottom surface of the equipment mounting seat is fixedly mounted with a driving mechanism; the outer end of the sampling support beam is rotatably matched with a sampling rotating frame, and the sampling rotating frame comprises a rotating ring and a toggle rod; the rotating ring circumferential side surface is uniformly provided with a toggle rod in a circular array; a sampling assembly is fixedly mounted on the toggle rod; the sampling assembly is meshed with the driving mechanism for transmission; the sampling assembly uses the driving mechanism as the power, and the sampling assembly performs a ring knife method soil sampling on the road surface; wherein, when the sampling rotating frame needs to perform a rotation operation each time, the hydraulic lifting cylinder needs to perform an ascending operation first, the sampling rotating frame needs to perform a rotation operation again, and then the hydraulic lifting cylinder needs to perform a descending operation.

[0007] As a preferred technical solution of the present invention, an external thread is provided on the peripheral side of the toggle rod; the sampling assembly includes a ring cutter, an outer ring cover and a gear barrel; an internal thread is provided on the inner wall of the gear barrel; the external thread is threadedly matched with the internal thread of the gear barrel; a ring cutter is installed at the bottom of the gear barrel; gear teeth are evenly arranged on the peripheral side of the gear barrel, and a tooth groove for sliding fit of the gear teeth is provided on the top of the outer ring cover, and the peripheral side of the gear barrel is slidably matched with the tooth groove of the outer ring cover; the gear teeth of the gear barrel are meshed with the driving mechanism for transmission.

[0008] As a preferred technical solution of the present invention, the sampling assembly also includes a scraping plate and a sweeping plate; the bottom surface of the scraping plate is evenly arrayed with scraping blades; the bottom surface of the sweeping plate is evenly arrayed with brushes; the top surfaces of the scraping plate and the sweeping plate are both fixed with rotating cylinders; the inner walls of the two rotating cylinders are respectively rotated with the other two toggle rods on the sampling rotating frame; a gear A is fixedly installed on the top of the rotating cylinder; and the gear A is meshed with the driving mechanism for transmission.

[0009] As a preferred technical solution of the present invention, the gear cylinder bottom circular array has an outer support plate, the bottom surface of the outer support plate is rotatably matched with a rotating clamping plate; the top of the ring cutter is evenly circularly arrayed with support plates on the circumferential side surface, and the support plate is provided with a clamping groove for matching with the rotating clamping plate.

[0010] As a preferred technical solution of the present invention, a bracket is fixedly installed on the toggle rod above the gear cylinder, and an electric telescopic rod is fixedly installed on the bracket; an arc-shaped clamping plate is fixed on the telescopic end of the electric telescopic rod; an arc-shaped clamping strip is fixed on the inner side of the arc-shaped clamping plate; an annular groove is opened on the side surface of the outer ring cover; the arc-shaped clamping strip is slidably matched with the inner wall of the annular groove.

[0011] As a preferred technical solution of the present invention, a hinge seat is arranged at the inner wall of the bottom of the outer ring cover, and a ruler plate is hinged on the hinge seat; and toothed edges are provided on the bottom of the outer ring cover and both sides of the ruler plate.

[0012] Among them, first, the scraper disc is driven to rotate by the driving mechanism, so that the scraper disc scrapes the loose soil on the road surface at the sampling position; after scraping, the sampling rotating frame is moved to rotate the sweeping disc to the position corresponding to the driving mechanism, and then the sweeping disc is driven to rotate by the driving mechanism, so that the sweeping disc sweeps the loose soil at the sampling position; after sweeping, the sampling rotating frame is moved to rotate the gear cylinder to the position corresponding to the driving mechanism, and then the gear cylinder is driven to rotate by the driving mechanism, so that the ring knife and the outer ring cover are rotated and inserted into the soil at the sampling position in sequence; and at the same time, the electric telescopic rod controls the outer ring cover from being located above the ring knife to being located below the ring knife at the end; finally, the ruler plate is operated to cut the soil layer through the bottom of the ring knife and return to the position directly below the ring knife; so that the ruler plate can support and lift the soil inside and below the ring knife.

[0013] As a preferred technical solution of the present invention, the outer ring cover is provided with a limited movable groove at the outer end of the ruler plate, and the peripheral side surface of the outer ring cover is also evenly arrayed with yielding grooves.

[0014] As a preferred technical solution of the present invention, a guide slide is provided on the outer side of the mounting back plate above the hydraulic lifting cylinder; a limiting slide is fixedly installed on the inner end of the sampling support beam; the inner wall of the guide slide is slidably matched with the limiting slide; the driving mechanism includes a driving motor and a gearbox; the driving motor and the gearbox are connected in transmission, and the output shaft of the gearbox is meshed with the sampling component for transmission.

[0015] As a preferred technical solution of the present invention, the outer end of the sampling support beam is provided with a uniform circular array of retaining grooves on the peripheral side surface; the inner wall of the rotating ring is provided with a uniform circular array of retaining columns; the inner wall of the retaining groove cooperates with the retaining columns.

[0016] The present invention has the following beneficial effects:

[0017] 1. Through the functions of the sampling support beam and the sampling rotating frame, the present invention can automatically and sequentially complete operations such as floating soil scraping, floating soil sweeping, and core sampling, while separating the soil layer and ensuring the supporting effect of the soil in the core cutter; it has the advantages of improving the sampling efficiency, ensuring the sampling success rate, and the sampling effect.

[0018] 2. Through the functions of the hydraulic lifting cylinder and the sampling rotating frame, before each rotation operation of the sampling rotating frame, it first performs a rising operation, and after the rotation operation, it performs a descending operation; it ensures that when the sampling component performs component rotation and displacement, it is in a suspended state and will not scrape the soil layer on the road surface; it has the advantages of ensuring the smoothness of soil sampling detection and improving the sampling success rate.

[0019] Of course, when implementing any product of the present invention, it is not necessarily required to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural view of a rapid sampling device for detecting compaction degree of the present invention from a bottom view perspective;

[0022] Figure 2 It is a schematic structural view of a rapid sampling device for detecting compaction degree of the present invention when the scale plate is below the cutting core cutter;

[0023] Figure 3 It is a schematic structural view of a rapid sampling device for detecting compaction degree of the present invention when the scale plate is located outside the core cutter;

[0024] Figure 4 It is a schematic structural view of the sampling support beam and the driving mechanism;

[0025] Figure 5 It is a schematic structural view of the sampling rotating frame, the bracket, and the electric telescopic rod;

[0026] Figure 6 It is a schematic structural view of the soil scraping disc and the soil scraping blade;

[0027] Figure 7 It is a schematic structural view of the gear cylinder, the outer edge support plate, and the rotating clamping plate;

[0028] Figure 8 It is a schematic structural position view of the outer peripheral ring cover, the hinge seat, and the limit moving groove;

[0029] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0030] 1-Vehicle-mounted lifting frame, 2-Sampling support beam, 3-Sampling rotating frame, 4-Driving mechanism, 5-Sampling assembly, 101-Mounting backplane, 102-Hydraulic lifting cylinder, 103-Guide slideway, 201-Limit slide seat, 202-Clamping groove, 203-Equipment mounting seat, 301-Rotating ring, 302-Poking rod, 303-Clamping column, 304-External thread, 305-Bracket, 306-Electric telescopic rod, 307-Arcuate clamping plate, 308-Arcuate clamping strip, 309-Operating rod, 401-Driving motor, 402-Transmission, 501-Ring cutter, 502-Peripheral ring cover, 503-Gear cylinder, 504-Tooth groove, 505-Outer edge support plate, 506-Rotating clamping plate, 507-Support plate, 508-Clamping slot, 509-Annular channel, 510-Hinge seat, 511-Ruler plate, 512-Tooth edge, 513-Soil scraping disc, 514-Soil sweeping disc, 515-Soil scraping blade, 516-Brush, 517-Rotating cylinder, 518-Gear A, 519-Limit moving slot, 520-Yielding slot. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1

[0033] Please refer to Figure 1-8As shown, the present invention is a fast sampling device for detecting compaction degree, comprising a vehicle-mounted lifting frame 1, a sampling support beam 2 and a sampling rotating frame 3; the vehicle-mounted lifting frame 1 comprises a mounting back plate 101 and a hydraulic lifting cylinder 102; the inner side of the mounting back plate 101 is fixedly mounted on the vehicle; the outer side of the mounting back plate 101 is fixedly mounted with a hydraulic lifting cylinder 102; the telescopic end of the hydraulic lifting cylinder 102 is fixedly mounted with a sampling support beam 2; the middle part of the sampling support beam 2 is fixedly mounted with an equipment mounting seat 203, and the bottom surface of the equipment mounting seat 203 is fixedly mounted with a driving mechanism 4; the outer end of the sampling support beam 2 is rotatably matched with a sampling rotating frame The rotating frame 3, the sampling rotating frame 3 includes a rotating ring 301 and a toggle rod 302; the toggle rod 302 is arranged in a uniform circular array on the side surface of the rotating ring 301; the sampling assembly 5 is fixedly mounted on the toggle rod 302; the sampling assembly 5 is meshed with the driving mechanism 4 for transmission; the sampling assembly 5 uses the driving mechanism 4 as the power to perform the soil sampling of the road surface by the ring knife method; wherein, each time the sampling rotating frame 3 needs to perform a rotation operation, the hydraulic lifting cylinder 102 needs to perform an ascending operation first, the sampling rotating frame 3 then performs a rotation operation, and then the hydraulic lifting cylinder 102 performs a descending operation.

[0034] Among them Figure 1 and Figure 5 , Figure 8 As shown, an external thread 304 is provided on the side surface of a toggle rod 302; the sampling assembly 5 includes a ring cutter 501, an outer ring cover 502 and a gear barrel 503; an inner thread is provided on the inner wall of the gear barrel 503; the external thread 304 is threadedly matched with the inner thread of the gear barrel 503; the ring cutter 501 is installed at the bottom of the gear barrel 503; gear teeth are evenly arranged on the side surface of the gear barrel 503, and a tooth groove 504 for sliding fit between the gear teeth is provided on the top of the outer ring cover 502, and the side surface of the gear barrel 503 is slidably matched with the tooth groove 504 of the outer ring cover 502; the gear teeth of the gear barrel 503 are meshed with the driving mechanism 4 for transmission.

[0035] Among them Figure 1 and Figure 6 As shown, the sampling assembly 5 also includes a scraping plate 513 and a sweeping plate 514; the scraping plate 513 has scraping blades 515 arranged evenly on the bottom surface; the sweeping plate 514 has brushes 516 arranged evenly on the bottom surface; the scraping plate 513 and the sweeping plate 514 are both fixed with rotating cylinders 517 on the top surfaces; the inner walls of the two rotating cylinders 517 are respectively rotated with the other two toggle rods 302 on the sampling rotating frame 3; a gear A518 is fixedly installed on the top of the rotating cylinder 517; the gear A518 is meshed with the driving mechanism 4 for transmission; a joystick 309 for manual rotation operation is also fixedly installed on the rotating ring 301; the joystick 309 is used to manually operate the sampling rotating frame 3 for rotation operation.

[0036] Among them Figure 1 and Figure 7As shown, there are outer edge support plates 505 arranged in a circular array at the bottom of the gear cylinder 503, and a rotating clamping plate 506 is rotatably fitted to the bottom surface of the outer edge support plate 505; on the circumferential side surface of the top of the annular cutter 501, support plates 507 are evenly arranged in a circular array, and clamping grooves 508 for cooperating with the rotating clamping plate 506 are formed on the support plates 507.

[0037] As shown in Figure 2 and Figure 5 shown, a toggle lever 302 is fixedly installed with a bracket 305 above the gear cylinder 503, and an electric telescopic rod 306 is fixedly installed on the bracket 305; the telescopic end of the electric telescopic rod 306 is fixed with an arc-shaped clamping plate 307; an arc-shaped clamping strip 308 is fixed to the inner side surface of the arc-shaped clamping plate 307; an annular channel 509 is formed on the circumferential side surface of the outer peripheral ring cover 502; the arc-shaped clamping strip 308 is slidably fitted to the inner wall of the annular channel 509; a hinge seat 510 is arranged at the inner wall of the bottom of the outer peripheral ring cover 502, and a scale plate 511 is hinged to the hinge seat 510; cutting edges 512 are formed at the bottom of the outer peripheral ring cover 502 and on both sides of the scale plate 511; a limit movable groove 519 is formed at the outer end of the scale plate 511 of the outer peripheral ring cover 502, and relief grooves 520 are also evenly arranged in an array on the circumferential side surface of the outer peripheral ring cover 502; the outer end of the scale plate 511 is inserted into the limit movable groove 519 and cannot be separated from the limit movable groove 519; by only controlling the rotation direction of the outer peripheral ring cover 502, the outer end of the scale plate 511 can achieve the effect of adjusting the position under the action of the resistance of the soil; as shown in Figure 2-3 the shown rotation direction, when the outer peripheral ring cover 502 rotates clockwise, the middle part of the scale plate 511 approaches the center of the outer peripheral ring cover 502, and at this time, the scale plate 511 will cut the soil below the annular cutter 501; when the outer peripheral ring cover 502 rotates counterclockwise, the whole scale plate 511 approaches the periphery of the outer peripheral ring cover 502, and at this time, the scale plate 511 will cut the soil outside the annular cutter 501.

[0038] Among them, first, the driving mechanism 4 is used to drive the soil scraping disc 513 to rotate, so that the soil scraping disc 513 scrapes the floating soil on the road surface at the sampling position; after the scraping is completed, the sampling rotating frame 3 is toggled to rotate the soil sweeping disc 514 to the position corresponding to the driving mechanism 4, and then the driving mechanism 4 is used to drive the soil sweeping disc 514 to rotate, so that the soil sweeping disc 514 sweeps the floating soil at the sampling position; after the sweeping is completed, the sampling rotating frame 3 is toggled to rotate the gear cylinder 503 to the position corresponding to the driving mechanism 4, and then the driving mechanism 4 is used to drive the gear cylinder 503 to rotate, so that the core cutter 501 and the outer ring cover 502 are both rotated and inserted into the soil at the sampling position in sequence; and at the same time, the electric telescopic rod 306 controls the outer ring cover 502 to move from above the core cutter 501 to below the core cutter 501 at the end; finally, the scale plate 511 is operated to cut the soil layer under the core cutter 501 and return to the position directly below the core cutter 501; so that the scale plate 511 can support and lift the soil inside and below the core cutter 501.

[0039] Embodiment 2

[0040] Based on Embodiment 1, a more preferred technical solution is as follows. Please refer to Figure 2-3 As shown, a guiding slideway 103 is provided on the outer side surface of the mounting back plate 101 above the hydraulic lifting cylinder 102; a limiting slide seat 201 is fixedly installed at the inner end of the sampling support beam 2; the inner wall of the guiding slideway 103 is slidably matched with the limiting slide seat 201; the driving mechanism 4 includes a driving motor 401 and a gearbox 402; the driving motor 401 and the gearbox 402 are in transmission connection, and the output shaft of the gearbox 402 is in meshing transmission with the sampling assembly 5; a limiting damping is provided between the sampling support beam 2 and the rotating ring 301.

[0041] Embodiment 3

[0042] Based on Embodiment 1, a more preferred technical solution is as follows. Please refer to Figure 4-5 As shown, evenly circularly arranged clamping grooves 202 are provided on the circumferential side surface of the outer end of the sampling support beam 2; evenly circularly arranged clamping posts 303 are provided on the inner wall of the rotating ring 301; the inner wall of the clamping groove 202 is matched with the clamping post 303.

[0043] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0044] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A fast sampling device for detecting compaction, characterized in that: It comprises a vehicle-mounted lifting frame (1), a sampling support beam (2) and a sampling rotating frame (3); The vehicle-mounted lifting frame (1) comprises a mounting back plate (101) and a hydraulic lifting cylinder (102); the inner side of the mounting back plate (101) is fixedly mounted on the vehicle; the outer side of the mounting back plate (101) is fixedly mounted with a hydraulic lifting cylinder (102); a sampling support beam (2) is fixedly mounted on the telescopic end of the hydraulic lifting cylinder (102); a device mounting seat (203) is fixedly mounted in the middle of the sampling support beam (2), and a driving mechanism (4) is fixedly mounted on the bottom surface of the device mounting seat (203); The outer end of the sampling support beam (2) is rotatably matched with a sampling rotating frame (3), and the sampling rotating frame (3) comprises a rotating ring (301) and a toggle rod (302); the rotating ring (301) is provided with toggle rods (302) in a uniform circular array on the circumferential side surface; a sampling assembly (5) is fixedly mounted on the toggle rod (302); the sampling assembly (5) is meshed with a driving mechanism (4) for transmission; and the sampling assembly (5) uses the driving mechanism (4) as a driving force to perform soil sampling on a road surface using a ring knife method.

2. A fast sampling device for detecting compaction according to claim 1, characterized in that: The circumferential side surface of the toggle rod (302) is provided with an external thread (304); the sampling assembly (5) comprises a ring cutter (501), an outer ring cover (502) and a gear barrel (503); the inner wall of the gear barrel (503) is provided with an internal thread; the external thread (304) is threadedly matched with the internal thread of the gear barrel (503); the bottom of the gear barrel (503) is equipped with a ring cutter (501); the circumferential side surface of the gear barrel (503) is evenly provided with gear teeth, the top of the outer ring cover (502) is provided with a tooth groove (504) for slidingly matching the gear teeth, the circumferential side surface of the gear barrel (503) is slidably matched with the tooth groove (504) of the outer ring cover (502); the gear teeth of the gear barrel (503) are meshed with the driving mechanism (4) for transmission.

3. A fast sampling device for detecting compaction according to claim 2, characterized in that: The sampling assembly (5) further comprises a scraping disc (513) and a sweeping disc (514); the bottom surface of the scraping disc (513) is uniformly arrayed with scraping blades (515); the bottom surface of the sweeping disc (514) is uniformly arrayed with brushes (516); the top surfaces of the scraping disc (513) and the sweeping disc (514) are both fixed with rotating cylinders (517); the inner walls of the two rotating cylinders (517) are respectively rotatably matched with the other two toggle rods (302) on the sampling rotating frame (3); a gear A (518) is fixedly mounted on the top of the rotating cylinder (517); the gear A (518) is meshed with the driving mechanism (4) for transmission.

4. A fast sampling device for detecting compaction according to claim 2, characterized in that: The bottom of the gear cylinder (503) is provided with an outer support plate (505) in a circular array, and the bottom surface of the outer support plate (505) is rotatably matched with a rotating clamping plate (506); the top of the ring knife (501) is provided with a support plate (507) in a uniform circular array on the circumferential side surface, and a clamping groove (508) for matching with the rotating clamping plate (506) is opened on the support plate (507).

5. A fast sampling device for detecting compaction according to claim 2, characterized in that: A bracket (305) is fixedly mounted on the toggle rod (302) above the gear cylinder (503); an electric telescopic rod (306) is fixedly mounted on the bracket (305); an arc-shaped clamping plate (307) is fixed to the telescopic end of the electric telescopic rod (306); an arc-shaped clamping strip (308) is fixed to the inner side surface of the arc-shaped clamping plate (307); an annular groove (509) is formed on the peripheral side surface of the outer ring cover (502); and the arc-shaped clamping strip (308) is slidably matched with the inner wall of the annular groove (509).

6. A fast sampling device for detecting compaction according to claim 2, characterized in that: A hinge seat (510) is provided at the inner wall of the bottom of the peripheral ring cover (502), and a ruler plate (511) is hingedly connected to the hinge seat (510); and toothed edges (512) are provided at the bottom of the peripheral ring cover (502) and on both sides of the ruler plate (511).

7. A fast sampling device for detecting compaction according to claim 6, characterized in that: The outer ring cover (502) is provided with a limit movable groove (519) at the outer end of the ruler plate (511), and the peripheral side surface of the outer ring cover (502) is also provided with a uniform array of clearance grooves (520).

8. A fast sampling device for detecting compaction according to claim 1, characterized in that: The outer side surface of the mounting back plate (101) is provided with a guide slideway (103) above the hydraulic lifting cylinder (102); a limit slide seat (201) is fixedly installed at the inner end of the sampling support beam (2); the inner wall of the guide slideway (103) is slidably matched with the limit slide seat (201); the driving mechanism (4) comprises a driving motor (401) and a gearbox (402); the driving motor (401) and the gearbox (402) are in transmission connection, and the output shaft of the gearbox (402) is meshed with the sampling component (5) for transmission.

9. A fast sampling device for detecting compaction according to claim 1, characterized in that: The outer end of the sampling support beam (2) is provided with a uniform circular array of retaining grooves (202); the inner wall of the rotating ring (301) is provided with a uniform circular array of retaining posts (303); the inner wall of the retaining groove (202) cooperates with the retaining posts (303).

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