Coring device and coring method for earthwork backfill compaction measurement

Abstract

The invention discloses a coring device and a coring method for earthwork backfill compaction measurement, and relates to the technical field of earthwork backfill compaction measurement. A coring device for earthwork backfill compaction measurement comprises a base frame, a pre-cleaning leveling mechanism and an auxiliary coring mechanism, the pre-cleaning leveling mechanism comprises a push plate, moving frames, a connecting plate, bottom plates and a scraping plate, the push plate is fixedly connected with the output end of an air cylinder, the two moving frames are symmetrically arranged below the push plate, the two bottom plates are symmetrically arranged below a coring cylinder, and the connecting plate is connected with the bottom plates. The connecting plate is arranged between the movable frame and the bottom plates, and the two scraping plates are fixedly connected to the bottoms of the ends, close to each other, of the two bottom plates correspondingly. Through the arrangement of the pre-cleaning leveling mechanism, in the earthwork backfilling compaction measurement process, sundries, loose soil layers and uneven parts on the land surface can be scraped off, so that the land surface is smoother, it is ensured that the cleaning degree of the land surface is consistent before coring every time, and measurement errors caused by incomplete cleaning or improper cleaning modes are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of earthwork backfill compaction measurement, and in particular to a coring device and a coring method for earthwork backfill compaction measurement. Background Art

[0002] In civil engineering construction, backfill compaction measurement is a key link in ensuring the stability and durability of foundation structures. Whether it is a building foundation, road subgrade or other earthwork project, the compaction quality will directly affect the safety and service life of the project. Therefore, accurately measuring the compaction degree of backfill is an indispensable part of the construction process.

[0003] Traditional backfill compaction measurement methods mainly include coring method, sand filling method, ring knife method, etc.; however, when performing coring for backfill compaction measurement, it is often necessary to manually clean the land surface at the test location before performing sampling operations. When manually cleaning the land surface, it is often difficult to completely remove debris and loose soil layers on the land surface, resulting in uneven parts on the land surface, which affects the insertion depth of the coring tube and the sampling quality, and further leads to inaccurate compaction measurement results. Moreover, the manual cleaning method is prone to differences due to different operator experience and operating habits. If the cleaning force is too great, the original state of the land will be destroyed, and if the cleaning force is insufficient, the cleaning effect cannot be achieved, so that the cleaning effect cannot be consistent each time, which leads to different states of the land surface before each coring, thereby introducing measurement errors.

[0004] In view of this, the present invention proposes a coring device and a coring method for measuring earth backfill compaction to remedy and improve the shortcomings of the prior art. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a coring device and a coring method for measuring earth backfill compaction, so as to solve the corresponding technical problems raised in the above background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is: In a first aspect, a coring device for measuring earth backfill compaction is provided, which includes a base frame, a pre-cleaning and leveling mechanism, and an auxiliary coring mechanism, wherein a cylinder is fixedly connected to the top of the base frame, and a coring barrel is provided below the output end of the cylinder; The pre-cleaning and leveling mechanism includes a push plate, a movable frame, a connecting plate, a bottom plate and a scraper. The push plate is fixedly connected to the output end of the cylinder. Two movable frames are symmetrically arranged below the push plate. Two bottom plates are symmetrically arranged below the core barrel. The connecting plate is arranged between the movable frame and the bottom plate. The two scrapers are respectively fixedly connected to the bottom of the two bottom plates close to each other. The auxiliary coring mechanism includes a fixed barrel, a driven gear, a spiral sleeve and a driving gear. The fixed barrel is arranged above the coring barrel, the driven gear is arranged between the fixed barrel and the coring barrel, the spiral sleeve is arranged on the rear side of the fixed barrel, and the driving gear is fixedly connected to the outer surface of the lower end of the spiral sleeve.

[0007] Optionally, the pre-cleaning and leveling mechanism also includes two push rods symmetrically fixedly connected to the bottom of the push plate, the bottom of the push rods is fixedly connected to a movable plate, the ends of the two movable plates away from each other are fixedly connected to sliders, and two sliding grooves are symmetrically opened on the inner walls on both sides of the base frame, and the sliders are slidably connected in the sliding grooves.

[0008] Optionally, the ends of the two movable plates that are close to each other are fixedly connected with an arc-shaped slide, and the arc-shaped slide fits against the outer surface of the fixed cylinder, and a vertical groove is provided on the side of the arc-shaped slide facing the fixed cylinder, the movable frame is vertically fixedly connected to the movable plate, and a pair of first connecting shafts are symmetrically fixedly connected on both sides of the movable frame, and a pair of driven plates are symmetrically fixedly connected on both sides of the ends of the two base plates that are away from each other, and the end of the driven plate away from the base plate is fixedly connected with a second connecting shaft, and the connecting plate is rotatably connected between the second connecting shaft and the first connecting shaft.

[0009] Optionally, a pair of limiting rods are symmetrically fixedly connected to the middle parts of the ends of the two base plates away from each other, and the limiting rods are slidably connected to the lower end of the base frame, and the bottoms of the two base plates are fixedly connected to support bars.

[0010] Optionally, the auxiliary coring mechanism also includes a pair of sleeve plates symmetrically fixedly connected to the inner top wall of the base frame, a U-shaped plate is slidably connected between the pair of sleeve plates, the U-shaped plate is arranged below the push plate, a pair of return springs are symmetrically fixedly connected between the top of the U-shaped plate and the inner top wall of the sleeve plate, a connecting column is fixedly connected to the bottom of the U-shaped plate, the bottom of the connecting column is fixedly connected to the top of the fixed tube, and a vertical bar is fixedly connected to the outer surface of the fixed tube.

[0011] Optionally, a fixing plate is fixedly connected to the middle of the upper rear end of the base frame, and the bottom of the fixing plate is fixedly connected to a fixing column, and the bottom of the fixing column is fixedly connected to a baffle, the outer surface of the rear side of the fixing cylinder is fixedly connected to an ear plate, and the fixing column and the ear plate are slidingly connected, and a spiral groove is provided on the outer surface of the lower end of the fixing column, and the spiral sleeve is rotatably connected to the bottom of the ear plate, and the spiral sleeve is movably connected to the outer surface of the lower end of the fixing column through the spiral groove, and the bottom of the fixing cylinder is rotatably connected to a linkage shaft, the driven gear is fixedly connected to the outer surface of the linkage shaft, and the driven gear is meshed with the driving gear, and the bottom of the fixing cylinder is fixedly connected to a cover plate, the driven gear and the driving gear are both arranged in the cover plate, and the linkage shaft and the spiral sleeve are both rotatably connected to the cover plate.

[0012] Optionally, a mounting groove is provided at the bottom of the linkage shaft, a clamping plate is fixedly connected to the top of the core barrel, and the clamping plate is arranged in the mounting groove, a pair of threaded rods are symmetrically threadedly connected to the lower end of the linkage shaft, and the pair of threaded rods are rotatably connected to a positioning plate at one end close to each other, and the positioning plate is slidably connected in the mounting groove, the clamping plate is arranged between a pair of positioning plates, and the positioning plate is used to position the clamping plate.

[0013] In a second aspect, a coring method for measuring backfill compaction is provided, which uses the coring device for measuring backfill compaction described in the first aspect. The coring method for measuring backfill compaction comprises: Step 1: Pre-treat and level the land surface through the pre-cleaning and leveling mechanism; Step 2: Positioning and coring operations are performed using a coring barrel.

[0014] Optionally, the step 1 includes: starting the device to make the two scrapers move in opposite directions to scrape off debris and loose soil on the surface of the land and level the land; The second step includes: driving the coring barrel to move downward and rotate, and performing positioning and coring operations by rotating and moving downward.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) By setting up the pre-cleaning and leveling mechanism and utilizing the design of the push plate, mobile frame, connecting plate, bottom plate and scraper, during the measurement of backfill compaction, the two bottom plates can be driven to move in the opposite direction, so that the two scrapers can pre-clean the land surface, scrape off the debris, loose soil layer and uneven parts on the land surface, and make the land surface smoother, so that the land at the position to be measured can be smoother, and ensure that the cleaning degree of the land surface is consistent before each coring, thereby reducing the measurement error caused by incomplete cleaning or improper cleaning method.

[0016] (2) Through the setting of the auxiliary coring mechanism and the design of the fixed barrel, driven gear, spiral sleeve and driving gear, when the coring barrel is driven to move downward, the spiral sleeve can be driven to move downward in a spiral manner on the outer surface of the fixed column, and the meshing contact between the driving gear and the driven gear can drive the coring barrel to rotate synchronously while moving downward, so as to achieve the effect of rotating downward, so that the coring barrel can cut into the land more smoothly and effectively, thereby reducing the resistance encountered during the coring process, improving the efficiency of coring, and facilitating the coring operation of the coring barrel on the land to be measured. At the same time, the rotating action can also ensure that the coring barrel cuts the land evenly during the coring process, avoiding uneven sampling caused by direct insertion of the coring barrel, thereby improving the accuracy and reliability of the measurement results, and reducing the force of the coring barrel directly impacting the land surface, so that the coring barrel is subjected to more uniform force during the coring process, avoiding wear of the coring barrel caused by direct impact, thereby extending the service life of the coring barrel and reducing the maintenance cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of a coring device for measuring earth backfill compaction provided by the present invention; Figure 2 Schematic diagram of the connection relationship of the pre-cleaning and leveling mechanism in the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at A in the middle; Figure 4 Schematic diagram of the connection relationship of the bottom plate in the present invention; Figure 5 Schematic diagram of the connection relationship of the U-shaped plates in the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at B in the middle; Figure 7 Schematic diagram of the split structure of the fixed column and the spiral sleeve in the present invention; Figure 8 Schematic diagram of the connection relationship at the installation slot in the present invention.

[0018] The numbers in the figure are: 1. Base frame; 2. Cylinder; 3. Coring barrel; 4. Pre-cleaning and leveling mechanism; 401. Push plate; 402. Push rod; 403. Moving plate; 404. Curved slide; 405. Vertical slot; 406. Moving frame; 407. First connecting shaft; 408. Connecting plate; 409. Second connecting shaft; 410. Follower plate; 411. Bottom plate; 412. Limiting rod; 413. Support bar; 414. Scraper; 415. Slider; 416. Slide slot; 5. Auxiliary coring mechanism; 501. Sleeve plate; 502. U-shaped plate; 503. Return spring; 504. Connecting column; 505. Fixed cylinder; 506. Vertical bar; 507. Linkage shaft; 508. Driven gear; 509. Ear plate; 510. Fixed plate; 511. Fixed column; 512. Spiral groove; 513. Baffle; 514. Spiral sleeve; 515. Driving gear; 516. Cover plate; 517. Mounting groove; 518. Clamping plate; 519. Positioning plate; 520. Threaded rod. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1 to 8 As shown, an embodiment of the present invention provides a coring device for measuring earth backfill compaction, comprising a base frame 1, a pre-cleaning and leveling mechanism 4, and an auxiliary coring mechanism 5. A cylinder 2 is fixedly connected to the top of the base frame 1, and a coring barrel 3 is provided below the output end of the cylinder 2. The pre-cleaning and leveling mechanism 4 includes a push plate 401, a movable frame 406, a connecting plate 408, a bottom plate 411, and a scraper 414. The push plate 401 is fixedly connected to the output end of the cylinder 2. Two movable frames 406 are symmetrically arranged below the push plate 401. Two bottom plates 411 are symmetrically arranged below the coring barrel 3. The connecting plate 408 is arranged between the movable frame 406 and the bottom plate 411. Two scrapers 414 are respectively fixedly connected to the bottom of the two bottom plates 411 near each other. The auxiliary coring mechanism 5 includes a fixed barrel 505, a driven gear 508, a spiral sleeve 514, and a driving gear 515. The fixed barrel 505 is arranged above the coring barrel 3, the driven gear 508 is arranged between the fixed barrel 505 and the coring barrel 3, the spiral sleeve 514 is arranged at the rear side of the fixed barrel 505, and the driving gear 515 is fixedly connected to the outer surface of the lower end of the spiral sleeve 514. The pre-cleaning and leveling mechanism 4 further includes two push rods 402 symmetrically fixedly connected to the bottom of the push plate 401, a movable plate 403 being fixedly connected to the bottom of the push rods 402, and a slider 415 being fixedly connected to one end of the two movable plates 403 that are away from each other. Two slide grooves 416 are symmetrically formed on the inner walls of both sides of the base frame 1, and the sliders 415 are slidably connected to the slide grooves 416; The ends of the two movable plates 403 that are close to each other are fixedly connected with a curved slide 404, and the curved slide 404 fits against the outer surface of the fixed cylinder 505. A vertical slot 405 is provided on the side of the curved slide 404 facing the fixed cylinder 505. The movable frame 406 is vertically fixedly connected to the movable plate 403. A pair of first connecting shafts 407 are symmetrically fixedly connected on both sides of the movable frame 406. A pair of driven plates 410 are symmetrically fixedly connected on both sides of the ends of the two bottom plates 411 that are away from each other. The end of the driven plate 410 away from the bottom plate 411 is fixedly connected to the second connecting shaft 409. The connecting plate 408 is rotatably connected between the second connecting shaft 409 and the first connecting shaft 407. A pair of limiting rods 412 are symmetrically fixedly connected to the middle of the ends of the two bottom plates 411 away from each other, and the limiting rods 412 are slidably connected to the lower end of the base frame 1. A supporting bar 413 is fixedly connected to the bottom of the two bottom plates 411.

[0021] The effects achieved by this embodiment are as follows: compared with the prior art, by setting up the pre-cleaning and leveling mechanism 4 and utilizing the design of the push plate 401, the movable frame 406, the connecting plate 408, the bottom plate 411 and the scraper 414, during the backfill compaction measurement process, the two bottom plates 411 can be driven to move in opposite directions, and the two scrapers 414 can be used to pre-clean the ground surface, scraping away debris, loose soil layers and uneven parts on the ground surface, making the ground surface smoother, thereby making the ground at the position to be measured smoother, and ensuring that the cleaning degree of the ground surface is consistent before each coring, thereby reducing measurement errors caused by incomplete cleaning or improper cleaning methods; Among them, the design of the push plate 401 can make the power of the cylinder 2 evenly transmitted to the push rod 402, so as to ensure that the push rods 402 on both sides can move synchronously, thereby not only improving the overall stability of the pre-cleaning and leveling mechanism 4, but also ensuring the synchronization of the movement of the moving plates 403 on both sides, avoiding the pre-cleaning and leveling mechanism 4 from being stuck or damaged due to one side moving too fast or too slow, thereby facilitating the subsequent driving of the bottom plate 411; Among them, by using the limiting rod 412 that is slidably provided between the bottom plate 411 and the lower end of the base frame 1, when the two bottom plates 411 are connected by the connecting plate 408 and move in opposite directions below the core barrel 3, the limiting rod 412 connected thereto can synchronously follow and slide through the lower end of the base frame 1, thereby assisting in the movement of the bottom plate 411 and making the lateral movement process of the bottom plate 411 more stable; Among them, the support strip 413 fixed at the bottom of the base plate 411 can fit with the ground, support the base plate 411, keep a distance between the base plate 411 and the ground, and avoid direct contact between the base plate 411 and the ground in the initial state, thereby reducing the wear or damage of the base plate 411 caused by long-term contact with the ground. At the same time, the design of the support strip 413 can also effectively disperse the weight of the base plate 411, reduce the direct pressure of the base plate 411 on the ground surface, and avoid excessive compaction or damage to the ground surface due to the weight of the base plate 411, thereby improving the accuracy of subsequent compaction measurements.

[0022] Example 2: Please refer to Figures 1 to 8 As shown, the auxiliary coring mechanism 5 provided in the embodiment of the present invention further includes a pair of sleeve plates 501 symmetrically fixedly connected to the inner top wall of the base frame 1, a U-shaped plate 502 is slidably connected between the pair of sleeve plates 501, the U-shaped plate 502 is arranged below the push plate 401, a pair of return springs 503 are symmetrically fixedly connected between the top of the U-shaped plate 502 and the inner top wall of the sleeve plate 501, a connecting column 504 is fixedly connected to the bottom of the U-shaped plate 502, the bottom of the connecting column 504 is fixedly connected to the top of the fixed cylinder 505, a vertical bar 506 is fixedly connected to the outer surface of the fixed cylinder 505, and the vertical bar 506 is slidably connected to the vertical groove 405; A fixing plate 510 is fixedly connected to the middle of the upper end of the rear side of the base frame 1, a fixing column 511 is fixedly connected to the bottom of the fixing plate 510, a baffle 513 is fixedly connected to the bottom of the fixing column 511, an ear plate 509 is fixedly connected to the outer surface of the rear side of the fixing cylinder 505, and the fixing column 511 and the ear plate 509 are connected through sliding, a spiral groove 512 is opened on the outer surface of the lower end of the fixing column 511, and a spiral sleeve 514 is rotatably connected to the bottom of the ear plate 509. The spiral sleeve 514 is connected to the bottom of the ear plate 509 through the spiral groove. 512 is movably connected to the outer surface of the lower end of the fixed column 511. The bottom of the fixed cylinder 505 is rotatably connected to the linkage shaft 507. The driven gear 508 is fixedly connected to the outer surface of the linkage shaft 507, and the driven gear 508 is meshed with the driving gear 515. The bottom of the fixed cylinder 505 is fixedly connected to a cover plate 516. The driven gear 508 and the driving gear 515 are both arranged in the cover plate 516. The linkage shaft 507 and the spiral sleeve 514 are both rotatably connected to the cover plate 516. An installation groove 517 is provided at the bottom of the linkage shaft 507, and a clamping plate 518 is fixedly connected to the top of the core barrel 3, and the clamping plate 518 is arranged in the installation groove 517. A pair of threaded rods 520 are symmetrically threadedly connected to the lower end of the linkage shaft 507. The pair of threaded rods 520 are rotatably connected to one end close to each other with a positioning plate 519, and the positioning plate 519 is slidably connected in the installation groove 517. The clamping plate 518 is arranged between the pair of positioning plates 519, and the positioning plate 519 is used to position the clamping plate 518.

[0023] The effects achieved by this embodiment are as follows: Compared with the prior art, by setting up the auxiliary coring mechanism 5 and utilizing the design of the fixed cylinder 505, the driven gear 508, the spiral sleeve 514 and the driving gear 515, when the coring cylinder 3 is driven to move downward, the spiral sleeve 514 can be driven to move downward in a spiral manner on the outer surface of the fixed column 511, and the meshing contact between the driving gear 515 and the driven gear 508 can drive the coring cylinder 3 to rotate synchronously while moving downward, so as to achieve the effect of rotating downward, so that the coring cylinder 3 can be moved more smoothly and effectively. The rotary action can also ensure that the coring barrel 3 cuts the ground evenly during the coring process, thus avoiding uneven sampling caused by the direct insertion of the coring barrel 3, thereby improving the accuracy and reliability of the measurement results, and reducing the force of the coring barrel 3 directly impacting the ground surface, so that the coring barrel 3 is subjected to more uniform force during the coring process, thereby avoiding wear of the coring barrel 3 caused by direct impact, thereby extending the service life of the coring barrel 3 and reducing the maintenance cost of the equipment. The U-shaped plate 502 is designed to slide vertically downward between the two sleeve plates 501, providing stable support for the downward movement of the coring barrel 3. The shape of the U-shaped plate 502 is designed to enable it to be in close contact with the lower surface of the push plate 401, ensuring that the thrust of the push plate 401 can be effectively transmitted, thereby improving the stability and reliability of the coring process. The meshing of the driven gear 508 and the driving gear 515, as well as the spiral motion of the spiral sleeve 514, can make the rotational motion of the coring barrel 3 more stable, thereby effectively ensuring that the coring barrel 3 maintains a consistent rotation speed and direction during the coring process, thereby improving the stability of coring; The cover plate 516 is designed to prevent dust from flying when cleaning the soil surface from adhering to the surfaces of the driving gear 515 and the driven gear 508 during the subsequent coring process, thereby preventing the dust from interfering with the meshing between the driving gear 515 and the driven gear 508. This increases the service life of the driven gear 508 and the driving gear 515, and reduces wear and failure of the driven gear 508 and the driving gear 515 caused by dust. In addition, the design of the threaded rod 520, the positioning plate 519 and the clamping plate 518 can make the two positioning plates 519 fit respectively with the outer walls on both sides of the clamping plate 518, thereby providing stable support for the core barrel 3, ensuring that the core barrel 3 remains stable during the coring process, avoiding shaking or loosening of the core barrel 3, thereby reducing sampling failures caused by shaking or loosening of the core barrel 3, avoiding the need for repeated sampling, and further improving work efficiency.

[0024] Embodiment 3: A coring method for measuring earthwork backfill compaction provided by an embodiment of the present invention uses the above-mentioned coring device for measuring earthwork backfill compaction. The coring method comprises the following steps: Step 1: Pre-process and level the soil surface through the pre-cleaning and leveling mechanism 4; Step 2: Positioning and coring operations are performed through the coring barrel 3.

[0025] Furthermore, by measuring and analyzing the data of the extracted soil cores, the compaction measurement results of the backfill can be obtained.

[0026] Specifically, step one includes: moving the two scrapers 414 in opposite directions to scrape away debris and loose soil on the surface of the land, and leveling the land.

[0027] Step 2 includes: driving the coring barrel 3 to move downward and rotate, performing positioning and coring operations by rotating downward to ensure that the coring process is stable and efficient.

[0028] When measuring and analyzing the data of the extracted soil cores, the compaction degree and moisture index of the extracted soil cores can be measured, the data can be analyzed and a compaction quality report can be generated to provide a basis for construction.

[0029] The complete usage steps and working principle of the above embodiment are as follows: The following is the working process of the pre-cleaning and leveling mechanism 4: During the measurement of earthwork backfill compaction, the staff can first place the device at the position to be measured, so that the core barrel 3 is located just above the measurement position, and then control the cylinder 2 to drive the push plate 401 fixed at its output end to move downward. At the same time, Figure 1 and Figure 2 As shown, since two push rods 402 are symmetrically fixed to the bottom of the push plate 401, and a movable plate 403 is fixed to the bottom of each push rod 402, when the push plate 401 moves downward, the movable plate 403 can be pushed downward synchronously through the connection of the push rod 402. In addition, because the ends of the two movable plates 403 that are away from each other are fixed with sliders 415, the inner walls of both sides of the base frame 1 are provided with sliding grooves 416 that are adapted to slide and connect with the sliders 415. As the movable plate 403 moves downward, the sliders 415 will slide downward synchronously in the sliding grooves 416 to cooperate with the downward movement of the movable plate 403, so that the movement process of the movable plate 403 can be more stable. A movable frame 406 is fixed to the ends of the two movable plates 403 that are close to each other, and a pair of first connecting shafts 407 are symmetrically fixed on both sides of the movable frame 406. When the movable plate 403 moves downward, the movable frame 406 and the first connecting shaft 407 connected thereto are synchronously followed to move downward, as shown in FIG. Figure 2 and Figure 4As shown, a connecting plate 408 is rotatably provided on the outer surface of the first connecting shaft 407, and a second connecting shaft 409 is rotatably provided on one end of the connecting plate 408 away from the first connecting shaft 407, and the second connecting shaft 409 is fixedly provided on the bottom plate 411 through the driven plate 410. Therefore, when the movable frame 406 moves downward, the driven plate 410 and the bottom plate 411 can be pushed outward synchronously through the linkage cooperation of the first connecting shaft 407, the connecting plate 408 and the second connecting shaft 409, so that the two bottom plates 411 that are initially in a closed contact state can move in a direction away from each other to increase the distance between the two bottom plates 411. Figure 4 As shown, because the bottom of the two bottom plates 411 are fixedly provided with support bars 413 and scrapers 414, before the cylinder 2 is operated, the support bars 413 can fit into the ground surface, support the bottom plates 411, keep a distance between the bottom plates 411 and the ground surface, avoid direct contact between the bottom plates 411 and the ground in the initial state, thereby reducing wear or damage to the bottom plates 411 caused by long-term contact with the ground. At the same time, the design of the support bars 413 can also effectively disperse the weight of the bottom plates 411, reduce the direct pressure of the bottom plates 411 on the ground surface, avoid excessive compaction or damage to the ground surface due to the weight of the bottom plates 411, thereby improving the accuracy of subsequent compaction measurement, and the lower end of the scraper 414 is embedded in the ground, when the cylinder 2 is started and the two bottom plates 411 move in opposite directions, the scraper 414 can scrape the surface soil of the ground; In the above process, by setting up the pre-cleaning and leveling mechanism 4 and utilizing the design of the push plate 401, the movable frame 406, the connecting plate 408, the base plate 411 and the scraper 414, during the measurement of the backfill compaction, the two base plates 411 can be driven to move in the opposite direction, and the two scrapers 414 can be used to pre-clean the land surface, scrape off the debris, loose soil layers and uneven parts on the land surface, and make the land surface smoother, thereby making the land at the position to be measured smoother, and ensuring that the degree of cleaning of the land surface is consistent before each coring, thereby reducing the measurement errors caused by incomplete cleaning or improper cleaning methods.

[0030] The following is the working process of the auxiliary coring mechanism 5: In the process of the cylinder 2 driving the push plate 401 to move downward, as shown in FIG. Figure 1 、 Figure 5 as well as Figure 6As shown, since two sleeve plates 501 are symmetrically fixed on the inner top wall of the base frame 1, and a U-shaped plate 502 is provided between the two sleeve plates 501 for vertical downward sliding, a pair of return springs 503 are symmetrically fixed between the inner top wall of the sleeve plate 501 and the top of the U-shaped plate 502, and the U-shaped plate 502 is provided below the push plate 401, when the push plate 401 moves downward, it can not only drive the two bottom plates 411 to move in the opposite direction, but also make the lower surface of the push plate 401 contact with the inner bottom wall of the U-shaped plate 502, The force exerted by the push plate 401 continuing to move downward can push the U-shaped plate 502 to slide vertically downward between the two sleeve plates 501 synchronously. At this time, the return spring 503 will also be stretched synchronously. In addition, because a connecting column 504 is fixedly provided at the bottom of the U-shaped plate 502, and a fixed cylinder 505 is fixedly provided at the bottom of the connecting column 504, when the U-shaped plate 502 is pushed downward by the push plate 401, the connecting column 504 can cooperate with the fixed cylinder 505 to move downward synchronously. Figure 2 and Figure 3 As shown, an arc-shaped slide 404 is fixedly provided at one end of the two movable plates 403 close to each other, and the arc-shaped slide 404 is in contact with the outer surface of the fixed cylinder 505. A vertical groove 405 is provided on the arc surface of the arc-shaped slide 404 close to each other. Figure 7 As shown, vertical bars 506 that are symmetrically fixed on the outer surfaces of both sides of the fixed cylinder 505 and are adapted to be slidably connected to the vertical grooves 405. Therefore, when the push plate 401 pushes the movable plate 403 downward through the push rod 402, the curved slide plate 404 will move downward synchronously. The sliding cooperation between the vertical bars 506 on the fixed cylinder 505 and the vertical grooves 405 on the curved slide plate 404 can make the vertical sliding process of the curved slide plate 404 adhering to the outer surface of the fixed cylinder 505 more stable. refer to Figure 5 、 Figure 6 as well as Figure 7As shown, a fixing plate 510 is fixedly provided on the rear side of the base frame 1, a fixing column 511 is fixedly provided on the bottom of the fixing plate 510, and an ear plate 509 is fixedly provided on the outer surface of the rear side of the fixing cylinder 505, and the ear plate 509 is slidably connected with the fixing column 511. When the push plate 401 pushes the U-shaped plate 502 to move downward, the fixing cylinder 505 can cooperate with the ear plate 509 installed thereon to follow synchronously and slide downward on the outer surface of the fixing column 511. Because the bottom of the ear plate 509 is rotated with a movable sleeve on the outer surface of the fixing column 511, The spiral sleeve 514 is provided on the outer surface of the fixed column 511, and a spiral groove 512 is provided on the outer surface of the spiral sleeve 514 to match the inner surface of the spiral sleeve 514. When the ear plate 509 moves downward synchronously with the fixed cylinder 505, the spiral groove 512 provided on the fixed column 511 can drive the spiral sleeve 514 to move downward in a rotational manner on the outer surface of the fixed column 511. At this time, the top of the spiral sleeve 514 will rotate at the bottom of the ear plate 509. Since the outer surface of the lower end of the spiral sleeve 514 is fixedly provided with a driving gear 515, When the spiral sleeve 514 rotates and moves downward, the position of the driving gear 515 will change synchronously, and the driving gear 515 will also be affected by the rotation of the spiral sleeve 514 and rotate synchronously. At the same time, since the bottom of the fixed cylinder 505 is provided with a linkage shaft 507 for rotation, and the outer surface of the linkage shaft 507 is fixed with a driven gear 508, when the fixed cylinder 505 moves downward, the driven gear 508 installed thereon can be driven to move downward synchronously through the connection of the linkage shaft 507. The driven gear 508 is meshed with the driving gear 515. Therefore, when the driving gear 515 moves downward and rotates following the spiral sleeve 514, the driven gear 508 moves downward synchronously, and the rotational connection relationship between the linkage shaft 507 and the fixed cylinder 505 can make the driving gear 515 rotate and mesh to drive the driven gear 508 below the fixed cylinder 505, and rotate synchronously with the linkage shaft 507 as the axis. When the linkage shaft 507 rotates synchronously with the driven gear 508 at the bottom of the fixed cylinder 505, it can be seen from the figure that Figure 8Since the bottom of the linkage shaft 507 is provided with a mounting groove 517, a clamping plate 518 is fixedly provided on the top of the core barrel 3, and the clamping plate 518 is installed in the mounting groove 517, when the linkage shaft 507 rotates, the connection between the clamping plate 518 and the mounting groove 517 can synchronously drive the core barrel 3 to follow the rotation of the linkage shaft 507 and rotate synchronously below the fixed barrel 505. At the same time, affected by the downward movement of the fixed barrel 505, the core barrel 3 will follow the downward movement of the fixed barrel 505 and move downward synchronously, and with the meshing design between the driving gear 515 and the driven gear 508, it can make The coring barrel 3 rotates synchronously while moving downward to achieve the effect of rotating downward, thereby facilitating the coring operation of the coring barrel 3 on the land to be measured. At the same time, the rotating action can also ensure that the coring barrel 3 cuts the land evenly during the coring process, avoiding uneven sampling caused by direct insertion of the coring barrel 3, thereby improving the accuracy and reliability of the measurement results, and reducing the force of the coring barrel 3 directly impacting the land surface, so that the coring barrel 3 is subjected to more uniform force during the coring process, avoiding wear of the coring barrel 3 caused by direct impact, thereby extending the service life of the coring barrel 3 and reducing the maintenance cost of the equipment; Among them, Figure 1 、 Figure 5 as well as Figure 7 As shown, a cover plate 516 is fixedly provided at the bottom of the fixed cylinder 505, and the driven gear 508 and the driving gear 515 are both arranged in the cover plate 516, and the linkage shaft 507 and the spiral sleeve 514 are both rotatably connected to the cover plate 516. In the subsequent coring process, the blocking design of the cover plate 516 can be used to prevent dust flying when cleaning the soil surface from adhering to the surfaces of the driving gear 515 and the driven gear 508, thereby preventing interference with the meshing between the driving gear 515 and the driven gear 508; Reference Figure 8 As shown, the lower end of the linkage shaft 507 is symmetrically threaded with a threaded rod 520, and the two threaded rods 520 are close to each other at one end and extend into the installation groove 517, and the two threaded rods 520 are close to each other at one end and are rotatably provided with a positioning plate 519 that is slidably connected to the inner wall of the installation groove 517, and the positioning plates 519 are set on both sides of the clamping plate 518 and fit with the outer walls of both sides of the clamping plate 518. By utilizing the design of the threaded rod 520, the positioning plates 519 and the clamping plate 518, the two positioning plates 519 can fit with the outer walls of both sides of the clamping plate 518 respectively, thereby providing stable support for the core barrel 3, ensuring that the core barrel 3 remains stable during the coring process, avoiding shaking or loosening of the core barrel 3, thereby reducing sampling failure caused by shaking or loosening of the core barrel 3, avoiding the need for repeated sampling, and further improving work efficiency; After the coring operation is completed and the core barrel 3 is moved upward out of the ground by the cylinder 2, the staff can rotate the threaded rod 520 to make the two threaded rods 520 move in the opposite direction (i.e., move outward) at the lower end of the linkage shaft 507. At this time, under the influence of the movement of the threaded rod 520, the two positioning plates 519 can slide synchronously with the inner wall of the installation groove 517 in the opposite direction and separate from the clamping plate 518, thereby releasing the positioning and clamping of the clamping plate 518, and then pushing the core barrel 3 from its rear side to the front side, so that the clamping plate 518 can slide out of the installation groove 517, so as to facilitate the removal of the core barrel 3 from the device and carry out subsequent compaction measurement operations.

[0031] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A coring device for measuring earthwork backfill compaction, characterized in that: It comprises a base frame (1), a pre-cleaning and leveling mechanism (4) and an auxiliary coring mechanism (5); the top of the base frame (1) is fixedly connected to a cylinder (2); a coring barrel (3) is provided below the output end of the cylinder (2); The pre-cleaning and leveling mechanism (4) includes a push plate (401), a movable frame (406), a connecting plate (408), a bottom plate (411) and a scraper (414), wherein the push plate (401) is fixedly connected to the output end of the cylinder (2), two movable frames (406) are symmetrically arranged below the push plate (401), two bottom plates (411) are symmetrically arranged below the core barrel (3), the connecting plate (408) is arranged between the movable frame (406) and the bottom plate (411), and the two scrapers (414) are respectively fixedly connected to the bottom of the two bottom plates (411) close to each other; The auxiliary coring mechanism (5) comprises a fixed barrel (505), a driven gear (508), a spiral sleeve (514) and a driving gear (515), wherein the fixed barrel (505) is arranged above the coring barrel (3), the driven gear (508) is arranged between the fixed barrel (505) and the coring barrel (3), the spiral sleeve (514) is arranged at the rear side of the fixed barrel (505), and the driving gear (515) is fixedly connected to the outer surface of the lower end of the spiral sleeve (514).

2. A coring device for measuring earthwork backfill compaction according to claim 1, characterized in that: The pre-cleaning and leveling mechanism (4) further comprises two push rods (402) symmetrically fixedly connected to the bottom of the push plate (401), the bottom of the push rods (402) is fixedly connected to a movable plate (403), and the ends of the two movable plates (403) that are away from each other are fixedly connected to a slider (415), and two sliding grooves (416) are symmetrically provided on the inner walls of both sides of the base frame (1), and the sliders (415) are slidably connected in the sliding grooves (416).

3. A coring device for measuring earthwork backfill compaction according to claim 2, characterized in that: The ends of the two movable plates (403) that are close to each other are fixedly connected with an arc-shaped slide plate (404), and the arc-shaped slide plate (404) is in contact with the outer surface of the fixed cylinder (505). A vertical groove (405) is provided on the side of the arc-shaped slide plate (404) facing the fixed cylinder (505). The movable frame (406) is vertically fixedly connected to the movable plate (403). A pair of first connecting shafts (407) are symmetrically fixedly connected on both sides of the movable frame (406). A pair of driven plates (410) are symmetrically fixedly connected on both sides of the ends of the two bottom plates (411) that are away from each other. The end of the driven plate (410) away from the bottom plate (411) is fixedly connected with a second connecting shaft (409). The connecting plate (408) is rotatably connected between the second connecting shaft (409) and the first connecting shaft (407).

4. A coring device for measuring earthwork backfill compaction according to claim 3, characterized in that: A pair of limiting rods (412) are symmetrically fixedly connected to the middle of the ends of the two bottom plates (411) that are away from each other, and the limiting rods (412) are slidably connected to the lower end of the base frame (1). The bottoms of the two bottom plates (411) are fixedly connected to support bars (413).

5. The coring device for measuring earthwork backfill compaction according to claim 1, characterized in that: The auxiliary coring mechanism (5) further comprises a pair of sleeve plates (501) symmetrically fixedly connected to the inner top wall of the base frame (1); a U-shaped plate (502) is slidably connected between the pair of sleeve plates (501); the U-shaped plate (502) is arranged below the push plate (401); a pair of return springs (503) are symmetrically fixedly connected between the top of the U-shaped plate (502) and the inner top wall of the sleeve plate (501); a connecting column (504) is fixedly connected to the bottom of the U-shaped plate (502); the bottom of the connecting column (504) is fixedly connected to the top of the fixed cylinder (505); and a vertical bar (506) is fixedly connected to the outer surface of the fixed cylinder (505).

6. A coring device for measuring earthwork backfill compaction according to claim 5, characterized in that: A fixing plate (510) is fixedly connected to the middle of the upper end of the rear side of the base frame (1), a fixing column (511) is fixedly connected to the bottom of the fixing plate (510), a baffle (513) is fixedly connected to the bottom of the fixing column (511), an ear plate (509) is fixedly connected to the outer surface of the rear side of the fixing cylinder (505), and the fixing column (511) and the ear plate (509) are connected through sliding, a spiral groove (512) is provided on the outer surface of the lower end of the fixing column (511), and the spiral sleeve (514) is rotatably connected to the bottom of the ear plate (509), and the spiral sleeve (514) is screwed to the bottom of the ear plate (509). The groove (512) is movably connected to the outer surface of the lower end of the fixed column (511); the bottom of the fixed cylinder (505) is rotatably connected to a linkage shaft (507); the driven gear (508) is fixedly connected to the outer surface of the linkage shaft (507); and the driven gear (508) is meshedly connected to the driving gear (515); the bottom of the fixed cylinder (505) is fixedly connected to a cover plate (516); the driven gear (508) and the driving gear (515) are both arranged in the cover plate (516); and the linkage shaft (507) and the spiral sleeve (514) are both rotatably connected to the cover plate (516).

7. A coring device for measuring earthwork backfill compaction according to claim 6, characterized in that: A mounting groove (517) is provided at the bottom of the linkage shaft (507), a clamping plate (518) is fixedly connected to the top of the core-taking barrel (3), and the clamping plate (518) is arranged in the mounting groove (517), and a pair of threaded rods (520) are symmetrically threadedly connected to the lower end of the linkage shaft (507), and the pair of threaded rods (520) are rotatably connected to a positioning plate (519) at one end close to each other, and the positioning plate (519) is slidably connected in the mounting groove (517), and the clamping plate (518) is arranged between the pair of positioning plates (519), and the positioning plate (519) is used to position the clamping plate (518).

8. A coring method for measuring earthwork backfill compaction, using a coring device for measuring earthwork backfill compaction according to any one of claims 1 to 7, characterized in that: The coring method for measuring earthwork backfill compaction comprises: Step 1: Pre-processing and leveling the soil surface through the pre-cleaning and leveling mechanism (4); Step 2: Positioning and coring operations are performed through the coring barrel (3).

9. A coring method for measuring earthwork backfill compaction according to claim 8, characterized in that: The step 1 comprises: starting the device to make the two scrapers (414) move in opposite directions to scrape away debris and loose soil layers on the surface of the land and level the land; The second step comprises: driving the coring barrel (3) to move downward and rotate, and performing positioning and coring operations by rotating downward.

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