Gravel pile compactness detection mechanism and detection vehicle

Abstract

The present invention relates to the field of gravel pile detection. Disclosed are a gravel pile compactness detection mechanism and a detection vehicle. The mechanism comprises a test platform, wherein a rotating ring is rotatably connected in the test platform, a sliding sleeve is hinged to a bottom end of the rotating ring, clamping rods are slidably connected in the sliding sleeve, a clamping wheel is hinged to one end of the inner side of each clamping rod, a side protrusion is fixedly connected to the right side of the rotating ring, an electric push rod is hinged to a bottom end of the test platform, a hinge frame is fixedly connected to a telescopic end of a back surface of the electric push rod, a reference positioning plate is fixedly connected in the test platform, and a detection assembly is provided at a top end of the test platform. In the present invention, by providing the test platform, the rotating ring and other structures, when the electric push rod is activated, a plurality of groups of clamping rods deflect inwards at the same time; and when the clamping wheels come into contact with an outer wall of a gravel pile, the gravel pile is concentric with the rotating ring, so that a heavy hammer will impact the center of the gravel pile when falling, thereby ensuring the accuracy of test data.

Description

A crushed stone pile compaction testing mechanism and testing vehicle Technical Field

[0001] This invention relates to the field of crushed stone pile testing, and more particularly to a crushed stone pile body compaction testing mechanism and testing vehicle. Background Technology

[0002] Crushed stone piles are a foundation treatment method that uses crushed stone (pebbles) as the main material and forms a series of dense crushed stone columns in the foundation through specific construction techniques (such as vibro-compaction and dry vibration). These crushed stone columns enhance the bearing capacity and stability of the foundation and effectively distribute and transfer the load of the superstructure. Crushed stone piles are simple to construct, low in cost, and have minimal impact on the surrounding environment. Therefore, they are widely used in construction, highway, and railway engineering, especially in soft soil areas, collapsible loess areas, and earthquake-prone areas. As an effective foundation reinforcement method, crushed stone piles can significantly improve the bearing capacity and seismic performance of the foundation.

[0003] The compaction test of crushed stone piles is an important step in ensuring the construction quality and bearing capacity of crushed stone piles. The compaction of crushed stone piles is usually tested using the heavy dynamic penetration test method, which requires a crushed stone pile compaction test mechanism and test vehicle.

[0004] Traditional heavy-duty dynamic cone penetration testing (DCPT) typically uses a free-falling hammer, dropping it from a specified height and penetrating the interior of a crushed stone pile through a probe. The number of blows required to penetrate 10cm is recorded. Based on the number of blows, a formula can be used to assess the compaction of the crushed stone pile. However, in actual tests, because the height of the crushed stone piles varies, each test requires re-elevation, raising the hammer to the specified height, which is cumbersome. Furthermore, it cannot guarantee that the hammer will strike the center of the crushed stone pile, leading to certain errors in the test data and inaccurate calculations. To address these issues, a crushed stone pile compaction testing mechanism and testing vehicle are proposed. Summary of the Invention

[0005] To overcome the above deficiencies, the present invention provides a crushed stone pile compaction detection mechanism, which aims to improve the problems in the prior art that cannot guarantee that the hammer will hit the center of the crushed stone pile.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a crushed stone pile body compaction testing mechanism, comprising a testing platform, a rotating ring rotatably connected inside the testing platform, a sliding sleeve hinged to the bottom end of the rotating ring, a clamping rod slidably connected inside the sliding sleeve, a clamping wheel hinged to one end of the inner side of the clamping rod, a side protrusion fixedly connected to the right side of the rotating ring, an electric push rod hinged to the bottom end of the testing platform, a hinge frame fixedly connected to the telescopic end of the back of the electric push rod, a reference positioning plate fixedly connected inside the testing platform, and a testing component provided at the top of the testing platform, the testing component being used for dynamic penetration testing.

[0007] As a further description of the above technical solution:

[0008] The detection component includes a sliding column, the bottom end of which is fixedly connected to the top of the test platform. A sliding ring is slidably connected to the outer periphery of the sliding column, a connecting rod is fixedly connected to the inner side of the sliding ring, and a fixed seat is fixedly connected to the inner side of the connecting rod. A connecting groove is provided at the top of the fixed seat, and a counterweight is detachably connected to the bottom of the fixed seat. A top plate is fixedly connected to the top of the sliding column, and a lifting cylinder is provided inside the top plate. An electromagnetic block is provided at the bottom telescopic end of the lifting cylinder.

[0009] As a further description of the above technical solution:

[0010] One end of the clamping rod is hinged to the bottom of the test platform.

[0011] As a further description of the above technical solution:

[0012] The top of the hinge frame is hinged to the bottom of the side protrusion.

[0013] As a further description of the above technical solution:

[0014] The weight, the reference positioning plate, and the rotating ring are all concentric.

[0015] As a further description of the above technical solution:

[0016] The mounting base is made of iron, and the outer periphery of the electromagnetic block is slidably connected to the inside of the connecting groove.

[0017] To overcome the above shortcomings, the present invention provides a testing vehicle that aims to improve the existing technology that requires re-elevation for each test.

[0018] A testing vehicle includes a vehicle body and a crushed stone pile compaction testing mechanism as described in any one of claims 1-5, characterized in that: a fixing plate is fixedly connected to the top of the vehicle body, a telescopic cylinder is provided on the inner wall of the top of the fixing plate, a fixing block is fixedly connected to the bottom telescopic end of the telescopic cylinder, the inner side of the fixing block is fixedly connected to the outer side of the testing platform, and a passage groove is provided on the left side of the vehicle body.

[0019] As a further description of the above technical solution:

[0020] The width of the groove before and after is the same as the width of the test platform before and after.

[0021] The present invention has the following beneficial effects:

[0022] 1. In this invention, by setting up a test platform, a rotating ring and other structures, and activating the electric push rod, multiple sets of clamping rods are simultaneously deflected inward. When the clamping wheel contacts the outer wall of the crushed stone pile, the crushed stone pile and the rotating ring are concentric, so that when the hammer falls, it will collide with the center of the crushed stone pile, thus ensuring the accuracy of the test data.

[0023] 2. In this invention, by setting up mechanisms such as telescopic cylinders and reference positioning plates, the test platform is raised so that the reference positioning plate makes contact with the top surface of the crushed stone pile, thereby quickly completing the positioning of the reference surface. Therefore, when testing crushed stone piles of different heights, it is not necessary to repeat the elevation, making it more convenient to use. Attached Figure Description

[0024] Figure 1 is a frontal schematic diagram of the crushed stone pile body compaction detection mechanism and detection vehicle proposed in this invention.

[0025] Figure 2 is a schematic diagram of the bottom surface of the test platform of the crushed stone pile body compaction detection mechanism and detection vehicle proposed in this invention;

[0026] Figure 3 is a schematic diagram of the left side of the test platform of the crushed stone pile body compaction detection mechanism and detection vehicle proposed in this invention;

[0027] Figure 4 is a front view of the fixed seat of the crushed stone pile body compaction testing mechanism and testing vehicle proposed in this invention.

[0028] Legend:

[0029] 1. Vehicle body; 2. Fixing plate; 3. Telescopic cylinder; 4. Fixing block; 5. Test platform; 6. Rotating ring; 7. Sliding sleeve; 8. Clamping rod; 9. Clamping wheel; 10. Side protrusion; 11. Electric push rod; 12. Hinge frame; 13. Reference positioning plate; 14. Through groove; 15. Sliding column; 16. Sliding ring; 17. Connecting rod; 18. Fixing seat; 19. Connecting groove; 20. Counterweight; 21. Top plate; 22. Lifting cylinder; 23. Electromagnetic block. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Referring to Figures 1-3, one embodiment of the present invention provides a crushed stone pile compaction testing mechanism, comprising a testing platform 5, a rotating ring 6 rotatably connected inside the testing platform 5, a sliding sleeve 7 hinged to the bottom end of the rotating ring 6, four sets of sliding sleeves 7 arranged equidistantly in a ring at the bottom of the rotating ring 6, a clamping rod 8 slidably connected inside the sliding sleeve 7, the sliding sleeve 7 restricting the clamping rod 8 to slide only along the inner wall of the sliding sleeve 7, one outer end of the clamping rod 8 hinged to the bottom end of the testing platform 5, and one inner end of the clamping rod 8 hinged to a clamping wheel 9 for convenient clamping. A side protrusion 10 is fixedly connected to the right side of the rotating ring 6. An electric push rod 11 is hinged to the bottom of the test platform 5. When the electric push rod 11 is opened, its telescopic end can move back and forth and its telescopic amount can be precisely controlled. A hinge frame 12 is fixedly connected to the telescopic end of the electric push rod 11. The top of the hinge frame 12 is hinged to the bottom of the side protrusion 10. A reference positioning plate 13 is fixedly connected inside the test platform 5. The bottom surface of the reference positioning plate 13 is set as the reference surface for falling. A detection component is set at the top of the test platform 5. The detection component is used to perform dynamic penetration tests.

[0032] Referring to Figures 2-4, a detection assembly is provided at the top of the test platform 5. The detection assembly is used for dynamic penetration testing. The detection assembly includes a sliding column 15, the bottom of which is fixedly connected to the top of the test platform 5. There are four sets of sliding columns 15, evenly distributed at the four corners of the top of the test platform 5. A sliding ring 16 is slidably connected to the outer periphery of the sliding column 15, restricting the sliding ring 16 to slide only up and down along the outer wall of the sliding column 15. A connecting rod 17 is fixedly connected to the inner side of the sliding ring 16, and a fixing seat 18 is fixedly connected to the inner side of the connecting rod 17. A connecting groove 1 is provided at the top of the fixing seat 18. 9. A counterweight 20 is detachably connected to the bottom of the fixed base 18. Different weights of counterweights 20 can be removed and replaced for different tests. The counterweight 20, the reference positioning plate 13, and the rotating ring 6 are concentric to ensure that the counterweight 20 contacts the center point of the crushed stone pile. A top plate 21 is fixedly connected to the top of the sliding column 15. A lifting cylinder 22 is provided inside the top plate 21 to facilitate lifting the counterweight 20 to a specified height. An electromagnetic block 23 is provided at the bottom telescopic end of the lifting cylinder 22. The fixed base 18 is made of iron and will be attracted by a magnet. The outer periphery of the electromagnetic block 23 is slidably connected to the inside of the connecting groove 19 to fix the fixed base 18.

[0033] Referring to Figures 1 and 3, another embodiment of the present invention is provided: a testing vehicle, wherein a fixing plate 2 is fixedly connected to the top of the vehicle body 1, and two sets of fixing plates 2 are provided, symmetrically arranged at the top of the vehicle body 1. A telescopic cylinder 3 is provided on the inner wall of the top of the fixing plate 2. When the telescopic cylinder 3 is opened, the telescopic end of the bottom of the telescopic cylinder 3 can drive the fixing block 4 to move up and down. The telescopic end of the bottom of the telescopic cylinder 3 is fixedly connected to the fixing block 4. The inner side of the fixing block 4 is fixedly connected to the outer side of the test platform 5, thereby driving the test platform 5 to rise and fall. A passage groove 14 is provided on the left side of the vehicle body 1 to facilitate the passage of gravel piles. The front and rear width of the passage groove 14 is the same as the front and rear width of the test platform 5.

[0034] Working principle: To ensure the stone pile and the counterweight 20 remain concentric, the electric push rod 11 is activated. The electric push rod 11 pushes the side protrusion 10. At this time, the electric push rod 11 and the hinge frame 12 rotate simultaneously to ensure relative alignment. Simultaneously, the rotation of the side protrusion 10 drives the rotating ring 6 to rotate, which in turn drives the sliding sleeve 7 to rotate. At this time, the clamping rod 8 slides inside the sliding sleeve 7 and deflects inward to clamp the stone pile. At the same time, the vehicle body 1 is pushed so that all the clamping wheels 9 are in contact with the stone pile. At this point, the stone pile will be aligned with the rotating ring. 6. Maintaining concentricity, activate electromagnetic block 23. Electromagnetic block 23 generates magnetic force and activates lifting cylinder 22, causing electromagnetic block 23 to slide into connecting groove 19 and attract fixed seat 18. Lifting cylinder 22 then raises fixed seat 18, raising weight 20 to the designated height. Electromagnetic block 23 is then de-energized, losing its attraction. Weight 20 falls vertically under the action of sliding ring 16 and sliding column 15, resulting in free fall. Weight 20 will then contact the center of the gravel pile, ensuring test accuracy. For convenient setting of the reference surface, activate telescopic cylinder 3, raising test platform 5. This pushes vehicle body 1, allowing gravel pile to enter through groove 14 into the interior of vehicle body 1, located inside rotating ring 6. Activating telescopic cylinder 3 lowers test platform 5. When reference positioning plate 13 contacts the top surface of gravel pile, repeated elevation adjustments are unnecessary when testing gravel piles of different heights.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mechanism for detecting the compactness of a stone column pile body, comprising a test platform (5), characterized in that: The rotating ring (6) is rotatably connected inside the test platform (5), the sliding sleeve (7) is hingedly connected to the bottom end of the rotating ring (6), the clamping rod (8) is slidably connected inside the sliding sleeve (7), the clamping wheel (9) is hingedly connected to the inner side of one end of the clamping rod (8), the side protrusion (10) is fixedly connected to the right side of the rotating ring (6), the electric push rod (11) is hingedly connected to the bottom end of the test platform (5), the hinged frame (12) is fixedly connected to the retractable end on the back of the electric push rod (11), the reference positioning plate (13) is fixedly connected inside the test platform (5), the detection assembly is arranged at the top end of the test platform (5), and the detection assembly is used for dynamic penetration test.

2. The stone column shaft compactness detection mechanism according to claim 1, characterized in that: The detection assembly comprises a sliding column (15), the sliding column (15) is fixedly connected at the top end of the test platform (5), the sliding ring (16) is slidably connected to the outer periphery of the sliding column (15), the connecting rod (17) is fixedly connected to the inner side of the sliding ring (16), the fixed seat (18) is fixedly connected to the inner side of the connecting rod (17), the connecting groove (19) is arranged at the top end of the fixed seat (18), the weight (20) is detachably connected to the bottom end of the fixed seat (18), the top plate (21) is fixedly connected to the top end of the sliding column (15), the lifting cylinder (22) is arranged inside the top plate (21), and the electromagnetic block (23) is arranged at the retractable end of the bottom of the lifting cylinder (22).

3. The stone column shaft compactness detection mechanism according to claim 1, characterized in that: The clamping rod (8) is hingedly connected to the bottom end of the test platform (5).

4. The stone column shaft compactness detection mechanism according to claim 1, characterized in that: The hinged frame (12) is hingedly connected to the bottom end of the side protrusion (10).

5. The stone column shaft compactness detection mechanism according to claim 2, characterized in that: The weight (20) is concentric with the reference positioning plate (13) and the rotating ring (6).

6. The stone column shaft compactness detection mechanism according to claim 2, characterized in that: The fixed seat (18) is made of iron, and the electromagnetic block (23) is slidably connected to the inside of the connecting groove (19).

7. A detection vehicle comprising a vehicle body (1) and a stone column body density detection mechanism as claimed in any one of claims 1 to 5, characterized in that: The fixed plate (2) is fixedly connected to the top end of the vehicle body (1), the retractable cylinder (3) is arranged on the top end inner wall of the fixed plate (2), the fixed block (4) is fixedly connected to the outer side of the test platform (5), and the through slot (14) is arranged on the left side of the vehicle body (1).

8. The detection vehicle of claim 7, wherein: The front and rear widths of the through slot (14) are the same as the front and rear widths of the test platform (5).

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