Bearing and measuring device for highway subgrade and pavement field detection

Abstract

The utility model discloses a bearing and measuring device for highway subgrade pavement field detection, and relates to the technical field of highway measuring equipment, the bearing and measuring device comprises a detection rod and a limiting conical rod, the outer wall of the bottom end of the detection rod is movably sleeved with a guide cylinder, and the top of the detection rod is detachably and fixedly connected with a threaded pressing rod through a flange plate; and the outer wall of the threaded pressing rod is in threaded connection with a threaded sleeve. According to the utility model, the threaded pressing rod, the flange plate, the threaded sleeve, the adjusting turntable and the mounting ring frame are matched for use, so that the detection rod can be slowly inserted into a highway pavement in the process of rotating and moving downwards, the detection rod can be better combined with soil, the damage to a roadbed is reduced, the subsequent detection accuracy can be ensured, and the detection efficiency is improved. And a detachable quick connection structure formed among the threaded sleeve, the adjusting turntable, the mounting ring frame, the positioning rod and the positioning base is utilized, so that the whole device is convenient to disassemble and transfer, and the transportation convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of highway surveying equipment technology, specifically to a load-bearing capacity measuring device for on-site testing of highway subgrade and pavement. Background Technology

[0002] Bearing capacity is a concept borrowed from engineering geology, originally referring to the foundation's strength and ability to bear the weight of a structure. It has now evolved into one of the most commonly used concepts to describe the degree of limitation on development. Highway engineering refers to the surveying, measurement, design, construction, maintenance, and management of highway structures. Highway engineering structures include: roadbeds, pavements, bridges, culverts, tunnels, drainage systems, safety protection facilities, landscaping, and traffic monitoring facilities, as well as buildings, workshops, and other service facilities used for construction, maintenance, and monitoring. Some highway engineering projects inevitably experience wear and tear over time, such as minor deformation, rutting, and wear of the pavement under traffic loads. Timely maintenance and repair are essential to maintain normal performance and extend service life. Corresponding maintenance specifications are established for each highway engineering project. Neglecting maintenance and only addressing damage when it becomes severe often results in greater losses. Highway bearing capacity testing equipment is typically needed to test the bearing capacity of highways.

[0003] The prior art includes Chinese Patent No. CN221224398U, which discloses the following technical solution: a highway bearing capacity testing device, comprising a testing box, a grounding plate at the bottom of the testing box, and two grounding components symmetrically arranged on the outer wall of the grounding plate. In this invention, as the testing rod moves downwards, the two ends of the limiting components limit the testing rod, preventing it from shifting during downward insertion and ensuring that the testing rod remains vertical.

[0004] While the aforementioned existing technology can limit the downward movement of the detection rod by limiting both ends of the limiting component, preventing the detection rod from shifting during insertion and ensuring that the detection rod remains vertical, the fact that the detection rod is located in the detection box and that the insertion into the road surface is achieved directly through a hydraulic push rod means that the large thrust applied by the hydraulic rod may cause excessive compression and damage to the roadbed. This is especially true for more fragile roadbed materials, which may lead to changes in the internal structure of the roadbed, such as cracks and loosening. Such damage may affect the overall stability and load-bearing capacity of the roadbed, resulting in a deviation from the actual roadbed condition under use. Furthermore, it is inconvenient to apply static load to the subsequent detection rod. Utility Model Content

[0005] The purpose of this invention is to provide a load-bearing capacity measuring device for on-site testing of highway subgrade and pavement, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A load-bearing capacity measuring device for on-site testing of highway subgrade and pavement includes a testing rod and a limiting cone rod. A guide cylinder is movably sleeved on the outer wall of the bottom end of the testing rod, and a threaded pressure rod is detachably and fixedly connected to the top of the testing rod via a flange.

[0008] The outer wall of the threaded pressure rod is threadedly connected to a threaded sleeve, the outer wall of the threaded sleeve is movably fitted with an adjusting turntable, the outer wall of the threaded sleeve near the bottom end is rotatably connected to a collar, and the outer wall of the collar is fixedly connected to an installation ring bracket.

[0009] The upper surface of the mounting ring frame is provided with a positioning hole, and the bottom surface of the positioning hole is detachably and fixedly connected to a positioning base via a positioning rod. The inner wall of the positioning base is fixedly connected to the outer wall of the guide cylinder, and a positioning ring is rotatably connected to the outer wall of the positioning rod.

[0010] A further improvement of this utility model is that: a limiting groove is provided on the outer wall of the threaded sleeve, and a limiting block that mates with the limiting groove is fixedly connected to the inner wall of the adjusting turntable.

[0011] A further improvement of this utility model is that the inner wall of the limiting groove is movably connected to the outer wall of the limiting block.

[0012] A further improvement of this utility model is that: the upper surface of the positioning base is provided with a threaded hole that mates with the limiting cone rod, and the outer wall of the limiting cone rod is threadedly connected to the inner wall of the threaded hole.

[0013] A further improvement of this utility model is that: a positioning hole is provided on the upper surface of the mounting ring frame, the top end of the positioning rod is inserted into the inner wall of the positioning hole, and a nut is threadedly connected to the outer wall of the top end of the positioning rod.

[0014] A further improvement of this utility model is that: the upper surface of the positioning base is provided with an insertion hole that mates with the positioning rod, and the inner wall of the insertion hole is threadedly connected to the outer wall of the positioning rod near the bottom end.

[0015] A further improvement of this utility model is that: the top of the flange is provided with flange bolts for fixing it.

[0016] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0017] 1. This utility model provides a load-bearing measurement device for on-site testing of highway subgrade and pavement. By using a threaded pressure rod, flange, threaded sleeve, adjusting turntable and mounting ring in combination, the testing rod slowly inserts into the highway pavement during the rotation and downward movement, allowing it to better bond with the soil, reducing damage to the subgrade, and ensuring the accuracy of subsequent testing.

[0018] 2. This utility model provides a load-bearing measurement device for on-site testing of highway subgrade and pavement. It utilizes a detachable and quick-connect structure formed between a threaded sleeve, an adjusting turntable, a mounting ring frame, a positioning rod, and a positioning base, which facilitates the disassembly and transfer of the entire device and improves the convenience of transportation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the disassembly structure of this utility model;

[0021] Figure 3 This is an enlarged schematic diagram of the structure at point A of this utility model;

[0022] Figure 4 This is a schematic diagram of the threaded sleeve structure of this utility model.

[0023] In the diagram: 1. Detection rod; 2. Positioning base; 3. Guide cylinder; 4. Positioning ring; 5. Positioning rod; 6. Mounting ring frame; 7. Adjusting turntable; 8. Threaded pressure rod; 9. Positioning insertion hole; 10. Shaft collar; 11. Threaded sleeve; 12. Flange; 13. Flange bolt; 14. Limiting groove; 15. Limiting block; 16. Limiting cone rod. Detailed Implementation

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0025] The present invention will be further described in detail below with reference to embodiments:

[0026] Example 1

[0027] like Figure 1-4As shown, this utility model provides a load-bearing measurement device for on-site testing of highway subgrade and pavement, including a testing rod 1 and a limiting cone rod 16. A guide cylinder 3 is movably sleeved on the outer wall of the bottom end of the testing rod 1, and a threaded pressing rod 8 is detachably fixedly connected to the top of the testing rod 1 via a flange 12.

[0028] The outer wall of the threaded pressure rod 8 is threadedly connected to a threaded sleeve 11. An adjusting turntable 7 is movably sleeved on the outer wall of the threaded sleeve 11. A collar 10 is rotatably connected to the outer wall of the threaded sleeve 11 near the bottom end. An installation ring bracket 6 is fixedly connected to the outer wall of the collar 10.

[0029] The upper surface of the mounting ring frame 6 is provided with a positioning hole 9. The bottom surface of the positioning hole 9 is detachably and fixedly connected to the positioning base 2 via the positioning rod 5. The inner wall of the positioning base 2 is fixedly connected to the outer wall of the guide cylinder 3. The outer wall of the positioning rod 5 is rotatably connected to the positioning ring 4.

[0030] The outer wall of the threaded sleeve 11 has a limiting groove 14, and the inner wall of the adjusting disc 7 is fixedly connected to a limiting block 15 that mates with the limiting groove 14. When the adjusting disc 7 is not in use, it can be moved directly on the outer wall of the threaded sleeve 11, so that the limiting block 15 is separated from the limiting groove 14, and then the adjusting disc 7 and the threaded sleeve 11 can be separated.

[0031] When the device is transferred and transported, the components can be disassembled to facilitate subsequent transfer work, and can also be quickly reassembled when needed.

[0032] Example 2

[0033] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the inner wall of the limiting groove 14 is movably connected to the outer wall of the limiting block 15.

[0034] The upper surface of the positioning base 2 is provided with a threaded hole that mates with the limiting cone rod 16, and the outer wall of the limiting cone rod 16 is threadedly connected to the inner wall of the threaded hole.

[0035] The upper surface of the mounting ring 6 is provided with a positioning hole 9. The top end of the positioning rod 5 is inserted into the inner wall of the positioning hole 9, and the outer wall of the top end of the positioning rod 5 is threaded with a nut.

[0036] The upper surface of the positioning base 2 is provided with an insertion hole that mates with the positioning rod 5, and the inner wall of the insertion hole is threadedly connected to the outer wall of the positioning rod 5 near the bottom.

[0037] The flange 12 is equipped with flange bolts 13 for fixing it. After the detection rod 1 is inserted into the soil to a suitable depth, the threaded pressure rod 8 and the detection rod 1 can be separated by removing the flange bolts 13. Then, the mounting ring 6 can be removed from the top of the positioning rod 5. At this time, when it is necessary to add static load to the detection rod 1, it can be docked with the loading platform through the flange 12 without being affected by its components. At the same time, the positioning rod 5 can be rotated and separated from the positioning base 2 as needed.

[0038] The working principle of the load-bearing capacity measuring device used for on-site testing of highway subgrade and pavement will be explained in detail below.

[0039] like Figure 1-4 As shown, when in use, the positioning base 2 is placed at a suitable position on the road surface. Then, the adjusting turntable 7 is manually rotated, which causes the threaded sleeve 11 to rotate. During the rotation of the threaded sleeve 11, the threaded lowering rod 8 is moved down by the inner thread. During the downward movement of the threaded lowering rod 8, the detection rod 1 is rotated and moved down by the flange 12.

[0040] As the detection rod 1 rotates and moves downward, it slowly inserts into the road surface, allowing it to better bond with the soil and reducing damage to the roadbed.

[0041] When the adjusting turntable 7 is not in use, it can be moved directly on the outer wall of the threaded sleeve 11 to separate the limiting block 15 from the limiting groove 14. Then the adjusting turntable 7 and the threaded sleeve 11 can be separated.

[0042] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A load-bearing capacity measuring device for on-site testing of highway subgrade and pavement, comprising a testing rod (1) and a limiting cone rod (16), characterized in that: The bottom outer wall of the detection rod (1) is movably sleeved with a guide cylinder (3), and the top of the detection rod (1) is detachably fixedly connected with a threaded pressing rod (8) via a flange (12); The outer wall of the threaded pressing rod (8) is threadedly connected to a threaded sleeve (11), and the outer wall of the threaded sleeve (11) is movably fitted with an adjusting turntable (7). The outer wall of the threaded sleeve (11) near the bottom end is rotatably connected to a collar (10), and the outer wall of the collar (10) is fixedly connected to an installation ring frame (6). The upper surface of the mounting ring frame (6) is provided with a positioning insertion hole (9). The bottom surface of the positioning insertion hole (9) is detachably and fixedly connected to a positioning base (2) via a positioning rod (5). The inner wall of the positioning base (2) is fixedly connected to the outer wall of the guide cylinder (3). The outer wall of the positioning rod (5) is rotatably connected to a positioning ring (4).

2. The load-bearing capacity measuring device for on-site testing of highway subgrade and pavement according to claim 1, characterized in that: The outer wall of the threaded sleeve (11) is provided with a limiting groove (14), and the inner wall of the adjusting turntable (7) is fixedly connected with a limiting block (15) that mates with the limiting groove (14).

3. The load-bearing capacity measuring device for on-site testing of highway subgrade and pavement according to claim 2, characterized in that: The inner wall of the limiting groove (14) is movably connected to the outer wall of the limiting block (15).

4. The load-bearing capacity measuring device for on-site testing of highway subgrade and pavement according to claim 1, characterized in that: The upper surface of the positioning base (2) is provided with a threaded hole that mates with the limiting cone rod (16), and the outer wall of the limiting cone rod (16) is threadedly connected to the inner wall of the threaded hole.

5. The load-bearing capacity measuring device for on-site testing of highway subgrade and pavement according to claim 1, characterized in that: The upper surface of the mounting ring (6) is provided with a positioning insertion hole (9), the top end of the positioning rod (5) is inserted into the inner wall of the positioning insertion hole (9), and the outer wall of the top end of the positioning rod (5) is threaded with a nut.

6. The load-bearing capacity measuring device for on-site testing of highway subgrade and pavement according to claim 1, characterized in that: The upper surface of the positioning base (2) is provided with an insertion hole that mates with the positioning rod (5), and the inner wall of the insertion hole is threadedly connected to the outer wall of the positioning rod (5) near the bottom.

7. The load-bearing capacity measuring device for on-site testing of highway subgrade and pavement according to claim 1, characterized in that: The flange (12) is provided with flange bolts (13) for fixing it.

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