A subgrade engineering compactness detection device

Abstract

The utility model provides a kind of subgrade engineering compactness detection equipment, it is related to compactness detection technical field, comprising: rack, connect a group of three-stage guide rod;Weigher, the top plate center of connecting the rack;Sand storage cylinder, a group of the three-stage guide rod respectively pass the top ring of sand storage cylinder, the top ring of sand storage cylinder connects a group of mounting column;Measuring steel rope, connect a group of the mounting column, the measuring steel rope can be hung on the hook of the weigher, realize sand storage cylinder weighing;End cap assembly, install on the discharge pipe of sand storage cylinder.The utility model is deficient in view of prior art, develop a kind of subgrade engineering compactness detection equipment, the utility model is convenient to realize equipment transfer by adopting wheel, make wheel and road surface contact by controlling hydraulic rod contraction, it is convenient to square sand, it is convenient to control sand to flow out by controlling end cap assembly, after sand is finished, it is convenient to weigh sand.

Description

Technical Field

[0001] This utility model relates to the field of compaction testing technology, and in particular to a compaction testing device for roadbed engineering. Background Technology

[0002] Compaction degree testing of subgrade engineering is a core step in controlling subgrade construction quality and ensuring road durability and bearing capacity. The sand cone method is the arbitration method for on-site determination of the compaction degree of subgrade, base course and backfill soil, and is listed as the first choice by specifications such as JTG 3450-2019 "Specifications for Field Testing of Highway Subgrade and Pavement" and GB / T 50123-2019 "Standard for Geotechnical Testing Methods".

[0003] Existing technologies, such as a utility model of a roadbed compaction testing device (authorization announcement number CN222500196U), can automatically control the amount of sand flowing out by controlling the drive motor, and can also monitor the amount of sand in the pit in real time.

[0004] Currently, there is a lack of roadbed compaction testing equipment that facilitates the overall transfer of the equipment, controls sand outflow, and enables sand weighing.

[0005] Therefore, in order to address the above problems, a roadbed compaction testing device is proposed to solve these problems. Summary of the Invention

[0006] This invention addresses the shortcomings of existing technologies by developing a roadbed compaction testing device. The device utilizes wheels for easy equipment transfer, controls the retraction of hydraulic rods to detach the wheels from the road surface for easy sand dispensing, and controls the sand flow through the end cap assembly. After sand dispensing, the sand can be weighed easily.

[0007] The technical solution to the technical problem solved by this utility model is as follows: This utility model provides a roadbed compaction testing device, including: a frame, which serves as a platform for the entire machine to ensure the installation of components such as sand storage cylinders and weighing devices; a set of three-stage guide rods; a weighing device, which adopts a high-precision electronic crane scale; a top plate connected to the center of the frame; a sand storage cylinder, wherein the set of three-stage guide rods passes through the top ring of the sand storage cylinder, and the diameter of the three-stage guide rods increases sequentially from top to bottom, wherein the middle section has the same inner diameter as the circular hole set on the sand storage cylinder, which plays a guiding role, and the third stage plays a supporting role for the sand storage cylinder. During measurement, the sand storage cylinder is moved so that the circular hole is in the first stage, so that the sand storage cylinder is disengaged from the three-stage guide rods, which facilitates weighing; the top ring of the sand storage cylinder is connected to a set of mounting columns; a measuring steel rope is connected to the set of mounting columns, and the measuring steel rope can be suspended on the hook of the weighing device to realize the weighing of the sand storage cylinder; and an end cap assembly is installed on the discharge pipe of the sand storage cylinder for instantaneously switching on and off the standard sand flow.

[0008] As an optimization, the end cap assembly includes a mounting ring connected to the discharge pipe of the sand storage cylinder. A rotating ring is disposed inside the mounting ring and is rotatably connected to the discharge pipe of the sand storage cylinder. The rotating ring is rotatably connected to a set of valve plates. The set of valve plates forms a region that matches the rotating ring, forming a multi-valve linkage mechanism to achieve micro-adjustment of the opening degree, which is particularly suitable for the final stage of sand flow. The set of valve plates rotates to connect rocker arms, and each rocker arm rotates to connect to the mounting ring.

[0009] As an optimization, at least one of the rocker arm threaded connection bolts is provided, and the mounting ring is provided with a positioning hole for each bolt, with the bolt matching the positioning hole. A mechanical positioning lock is added, so that when the rotating ring rotates to the correct position, the bolt is screwed into the corresponding positioning hole to close the sand storage cylinder.

[0010] As an optimization, the frame is connected to symmetrical vertical rods, which then rotate to connect to symmetrical U-shaped rods. The frame is connected to hydraulic rods and telescopic rods. The four vertical rods of the frame pass through the lower return frame, which is connected to symmetrical wheel mounting seats. The lower return frame is provided with symmetrical lower straight grooves, and the lower round rod of each U-shaped rod is respectively set in the corresponding lower straight groove. This allows for quick switching between "walking" and "supporting" states, making it convenient to use.

[0011] As an optimization, the piston rod of the hydraulic rod and the free end of the telescopic rod are respectively connected to the lower return frame. By controlling the retraction of the hydraulic rod, the wheels are disengaged from the ground, allowing the frame to contact the ground for support and preventing the equipment from moving when sand flows.

[0012] As an optimization, the four vertical rods of the frame pass through the upper return frame, which is connected to symmetrical ground stakes. The upper return frame is provided with symmetrical upper straight grooves, and the upper round rod of each U-shaped rod is respectively placed in the corresponding upper straight groove. Each ground stake passes through the upper return frame, and the piston rod of the hydraulic rod and the free end of the telescopic rod are respectively connected to the upper return frame. By controlling the extension of the hydraulic rod, secondary anchoring on the soft roadbed is achieved, further improving the weighing stability and wind resistance.

[0013] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0014] (1) This utility model uses a weighing device to weigh the sand before and after it is discharged, which makes it easy to calculate the amount of sand discharged.

[0015] (2) By using an end cap assembly, the present invention reduces the amount of sand discharged at the end of the sand discharge period by controlling the change of the valve plate composition area, thus meeting the sand discharge requirements.

[0016] (3) This utility model uses a hydraulic rod to drive the wheel to disengage from the road surface when releasing sand, and to insert the ground nail into the roadbed when using ground nails, thereby fixing the equipment and preventing the equipment from moving when releasing sand. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the weighing state of this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the end cap assembly of this utility model.

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0022] In the diagram: 1. Frame, 2. Weighing device, 3. Three-stage guide rod, 4. Sand storage cylinder, 5. Upper return frame, 6. Lower return frame, 7. Ground nail, 8. Wheel, 9. U-shaped rod, 10. Vertical rod, 11. Measuring steel rope, 12. Mounting column, 13. Telescopic rod, 14. Lower straight groove, 15. Upper straight groove, 16. Hydraulic rod, 17. Mounting ring, 18. Valve plate, 19. Positioning hole, 20. Bolt, 21. Rotating ring, 22. Rocker arm. Detailed Implementation

[0023] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present invention omits descriptions of well-known components and processing techniques and processes to avoid unnecessarily limiting the present invention. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1 to 4 As shown in Embodiment 1: A roadbed compaction testing device includes: a frame 1, serving as a platform to support the entire machine and ensure the installation of components such as the sand storage cylinder 4 and the weighing device 2; a set of three-stage guide rods 3 connected to the frame 1; the weighing device 2, employing a high-precision electronic crane scale; and the top plate center connected to the frame 1; the sand storage cylinder 4, with the three-stage guide rods 3 passing through the top ring of the sand storage cylinder 4 respectively. The diameter of the three-stage guide rods 3 increases sequentially from top to bottom, with the middle section having the same inner diameter as the circular hole provided on the sand storage cylinder 4, serving as a guide... The third stage serves to support the sand storage cylinder 4. During measurement, the sand storage cylinder 4 is moved so that the circular hole is in the first stage, disengaging the sand storage cylinder 4 from the third-stage guide rod 3 for easy weighing. The top ring of the sand storage cylinder 4 is connected to a set of mounting columns 12. The measuring steel rope 11 is connected to the set of mounting columns 12 and can be suspended on the hook of the weighing device 2 to weigh the sand storage cylinder 4. The end cap assembly is installed on the discharge pipe of the sand storage cylinder 4 for instantaneously switching the standard sand flow on and off.

[0025] The end cap assembly includes a mounting ring 17, which is connected to the discharge pipe of the sand storage cylinder 4. A rotating ring 21 is provided inside the mounting ring 17. The rotating ring 21 is rotatably connected to the discharge pipe of the sand storage cylinder 4. The rotating ring 21 is rotatably connected to a set of valve plates 18. The set of valve plates 18 forms a region that matches the rotating ring 21, forming a multi-valve linkage mechanism to achieve micro-adjustment of the opening degree, which is particularly suitable for the final stage of sand flow. The set of valve plates 18 rotate to connect to rocker arms 22, and each rocker arm 22 rotates to connect to the mounting ring 17.

[0026] At least one of the rocker arms 22 is threadedly connected to a bolt 20. The mounting ring 17 is provided with a positioning hole 19 corresponding to each bolt 20, and the bolt 20 matches the positioning hole 19. A mechanical positioning lock is added. When the rotating ring is rotated to the correct position, the bolt 20 is screwed into the corresponding positioning hole 19 to close the sand storage cylinder 4.

[0027] The workflow of this embodiment is as follows:

[0028] Move the equipment to the preset position and align the discharge pipe of the sand storage cylinder 4 with the dug pit. Use the weighing device 2 to weigh the sand in the sand storage cylinder 4. After weighing, remove the measuring steel rope 11 from the hook of the weighing device 2 and make the sand storage cylinder 4 contact the third stage of the three-stage guide rod 3.

[0029] Unscrew bolt 20 from positioning hole 19, rotate rotating ring 21. Rotating ring 21 causes valve plate 18 to swing, and valve plate 18 causes rocker arm 22 to swing, causing sand to flow out of sand storage cylinder 4. When the pit is almost full, rotate rotating ring 21 in the opposite direction to reduce the area formed by valve plate 18, thereby reducing the instantaneous outflow of sand until the pit is almost full. Then, the area formed by valve plate 18 closes the discharge pipe of sand storage cylinder 4, and tighten bolt 20.

[0030] Weigh the sand storage cylinder 4 again.

[0031] The frame 1 is connected to symmetrical vertical rods 10, which in turn rotate to connect to symmetrical U-shaped rods 9. The frame 1 is connected to hydraulic rods 16 and telescopic rods 13. The four vertical rods of the frame 1 pass through the lower return frame 6, which is connected to the mounting seats of symmetrical wheels 8. The lower return frame 6 is provided with symmetrical lower straight grooves 14, and the lower round rod of each U-shaped rod 9 is respectively set in the corresponding lower straight groove 14. This allows for quick switching between "walking" and "supporting" states, making it convenient to use.

[0032] Example 2: This example further elaborates on Example 1. The piston rod of the hydraulic rod 16 and the free end of the telescopic rod 13 are respectively connected to the lower return frame 6. By controlling the retraction of the hydraulic rod 16, the wheels 8 are disengaged from the ground, allowing the frame 1 to contact the ground for support and preventing the equipment from moving when sand flows.

[0033] The workflow of this embodiment is as follows:

[0034] The mobile device is moved to the preset position, and the hydraulic rod 16 is retracted. As the wheel 8 contacts the road surface, the hydraulic rod 16 drives the lower return frame 6 to move upward relative to the frame 1. The lower return frame 6 drives the U-shaped rod 9 to swing, and at the same time, its lower round rod moves along the lower straight groove 14. The lower return frame 6 drives the wheel 8 to move upward until the frame 1 contacts the road surface, and the hydraulic rod 16 is closed.

[0035] Example 3: This example further elaborates on Example 1. The four vertical rods of the frame 1 pass through the upper return frame 5, which is connected to symmetrical ground spikes 7. The upper return frame 5 is provided with symmetrical upper straight grooves 15. The upper round rod of each U-shaped rod 9 is respectively placed in the corresponding upper straight groove 15. Each ground spike 7 passes through the upper return frame 5. The piston rod of the hydraulic rod 16 and the free end of the telescopic rod 13 are respectively connected to the upper return frame 5. By controlling the extension of the hydraulic rod 16, secondary anchoring on the soft roadbed is achieved, further improving the weighing stability and wind resistance.

[0036] The workflow of this embodiment is as follows:

[0037] The mobile device is moved to the preset position, and the hydraulic rod 16 is extended. The hydraulic rod 16 drives the upper return frame 5 and the ground spike 7 to move downward. The upper return frame 5 drives the U-shaped rod 9 to swing. At the same time, its upper round rod moves along the upper straight groove 15, and its lower round rod moves along the lower straight groove 14. The U-shaped rod 9 drives the lower return frame 6 and the wheel 8 to move upward relative to each other until the frame 1 contacts the road surface, so that the ground spike 7 is inserted into the roadbed.

[0038] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. A roadbed compaction testing device, characterized in that, include: The frame (1) is connected to a set of three-stage guide rods (3); Weighing device (2) is connected to the center of the top plate of the frame (1); A sand storage cylinder (4) has a set of three-stage guide rods (3) passing through the top ring of the sand storage cylinder (4), and the top ring of the sand storage cylinder (4) is connected to a set of mounting columns (12). A measuring steel rope (11) is connected to a set of mounting columns (12). The measuring steel rope (11) can be suspended on the hook of the weighing device (2) to realize the weighing of the sand storage cylinder (4). The end cap assembly is installed on the discharge pipe of the sand storage cylinder (4).

2. The roadbed compaction testing equipment according to claim 1, characterized in that: The end cap assembly includes a mounting ring (17) connected to the discharge pipe of the sand storage cylinder (4). A rotating ring (21) is provided inside the mounting ring (17). The rotating ring (21) is rotatably connected to the discharge pipe of the sand storage cylinder (4). The rotating ring (21) is rotatably connected to a set of valve plates (18). The set of valve plates (18) forms an area that matches the rotating ring (21). The set of valve plates (18) rotates to connect to rocker arms (22). Each rocker arm (22) rotates to connect to the mounting ring (17).

3. The roadbed compaction testing equipment according to claim 2, characterized in that: At least one of the rocker arms (22) is threadedly connected to a bolt (20), and the mounting ring (17) is provided with a positioning hole (19) for each bolt (20), and the bolt (20) matches the positioning hole (19).

4. The roadbed compaction testing equipment according to claim 1, characterized in that: The frame (1) is connected to symmetrical vertical rods (10), and the symmetrical vertical rods (10) are respectively rotated to connect to symmetrical U-shaped rods (9). The frame (1) is connected to hydraulic rods (16) and telescopic rods (13). The four vertical rods of the frame (1) pass through the lower return frame (6). The lower return frame (6) is connected to the mounting base of symmetrical wheels (8). The lower return frame (6) is provided with symmetrical lower straight grooves (14). The lower round rod of each U-shaped rod (9) is respectively set in the corresponding lower straight groove (14).

5. The roadbed compaction testing equipment according to claim 4, characterized in that: The piston rod of the hydraulic rod (16) and the free end of the telescopic rod (13) are respectively connected to the lower return frame (6).

6. The roadbed compaction testing equipment according to claim 4, characterized in that: The four vertical rods of the frame (1) pass through the upper return frame (5) respectively. The upper return frame (5) is connected to symmetrical ground nails (7). The upper return frame (5) is provided with symmetrical upper straight grooves (15). The upper round rod of each U-shaped rod (9) is respectively set in the corresponding upper straight groove (15). Each ground nail (7) passes through the upper return frame (5). The piston rod of the hydraulic rod (16) and the free end of the telescopic rod (13) are respectively connected to the upper return frame (5).

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