A roadbed settlement monitoring pole

Abstract

This utility model discloses a roadbed settlement monitoring rod, relating to the field of roadbed construction technology. It includes a settlement plate, a main rod body, a cover, and a guiding device. The bottom of the main rod body is fixedly installed on the settlement plate, and a probe is installed on its top. The cover is positioned above the settlement plate and covers the outside of the main rod body. The top of the cover is lower than the height of the main rod body and higher than the fill surface, while the bottom does not contact the settlement plate. The guiding device is positioned on the settlement plate and is used to guide the cover to be coaxial with the main rod body. The guiding device includes multiple guide columns fixed to the settlement plate and extending upwards. The multiple guide columns are evenly arranged around the circumference of the main rod body, forming a circular guide platform. The cover is inserted into the guide platform and is limited by the guide platform. This solves the problem of misalignment between the main rod body and the cover in the prior art, ensuring the normal use of the monitoring rod and the accuracy of the monitoring results.

Description

Technical Field

[0001] This utility model relates to the field of roadbed construction technology, and in particular to a roadbed settlement monitoring rod. Background Technology

[0002] Roadbed settlement monitoring is a crucial aspect of road engineering, typically achieved through the installation of monitoring poles. Existing monitoring poles often employ a combination structure of a main pole and an outer casing. The casing serves two purposes: protecting the main pole from soil compression and isolating it from friction from the backfill layer, which can affect the accuracy of the monitoring structure. To achieve this function, the casing is generally not mechanically connected to the protective main pole. This leads to misalignment during construction due to uneven soil pressure or inaccurate initial placement, causing the casing and main pole to become misaligned. This misalignment can result in collisions, affecting the normal operation of the monitoring pole. Furthermore, it may prevent the casing from effectively protecting the main pole, further compromising the accuracy of the monitoring results. Utility Model Content

[0003] The purpose of this invention is to provide a roadbed settlement monitoring rod to solve the problem of misalignment between the main rod and the cover in the prior art, thereby ensuring the normal use of the monitoring rod and the accuracy of the monitoring results.

[0004] To achieve the above objectives, this utility model provides a roadbed settlement monitoring pole, comprising a settlement plate, a main pole body, a cover, and a guiding device; the bottom of the main pole body is fixedly installed on the settlement plate, and a probe is installed on its top; the cover is positioned above the settlement plate and covers the outside of the main pole body, with the top of the cover being lower than the height of the main pole body and higher than the fill surface, and the bottom not contacting the settlement plate; the guiding device is positioned on the settlement plate and is used to guide the cover to be coaxial with the main pole body; the guiding device includes multiple guide columns fixed to the settlement plate and extending upward; the multiple guide columns are evenly arranged around the circumference of the main pole body and form a circular guide platform; the cover is inserted into the guide platform and is limited by the guide platform.

[0005] After adopting the above structure, firstly, the settlement plate is fixed to the main pole and buried in the roadbed base; the subgrade layer is laid until the guide post is partially exposed; the cover is inserted along the guide post, with its bottom pressed against the subgrade layer, and the guide platform restricts its radial displacement. Backfilling continues to the design elevation. The guide post forcibly constrains the position of the cover, ensuring it remains coaxial with the main pole. After laying the subgrade layer in layers, the cover is installed, and the exposed guide post is limited, simplifying the construction process.

[0006] Preferably, a cover is detachably installed on the top of the cover cylinder, which seals the cover cylinder. This structure prevents debris from entering the cover cylinder, providing better protection for the main rod and the probe.

[0007] Preferably, the bottom of the cover has a raised edge extending outwards to its perimeter, which increases the contact area with the soil layer. This structure makes the cover more stable in the soil layer and less prone to tilting or moving.

[0008] Preferably, the outer wall of the cover is provided with ribs or protrusions to enhance the bonding force with the soil. This structure improves the bonding strength between the cover and the surrounding soil, further enhancing the stability of the cover.

[0009] Preferably, the guide post is provided with a guide block, which is an arc-shaped block with an outer diameter that matches the inner diameter of the cover. With this structure, the arc-shaped guide block can better fit against the inner wall of the cover, guiding the cover to be smoothly inserted into the guide platform.

[0010] Preferably, the upper outer part of the arc-shaped block is provided with a guide ramp for guiding the insertion of the cover. This structure facilitates the smooth insertion of the cover into the guide platform during installation, improving installation efficiency.

[0011] Preferably, an elastic sleeve is provided above the cover cylinder; the elastic sleeve includes an upper fixing ring and a lower fixing ring fixed to the main rod body, and the upper fixing ring and the lower fixing ring are connected by multiple spring pieces, each spring piece being an arc-shaped piece that curves outward from the center; the center of the arc-shaped piece abuts against the inner wall of the cover cylinder. With this structure, the elastic sleeve can play a buffering and supporting role between the cover cylinder and the main rod body, further ensuring the coaxiality of the two.

[0012] Preferably, the arc-shaped spring includes a straight segment disposed at its upper and lower ends and fixedly mounted on the upper or lower fixing ring, a first curved segment connected to the straight segment and bent towards the central axis of the upper and lower fixing rings, and a second curved segment connecting the two first curved segments and bending away from the central axis; the second curved segment abuts against the inner wall of the cover. With this structure, the spring can better adapt to changes in the relative position between the cover and the main rod, providing stable support and cushioning.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are:

[0014] This utility model provides a roadbed settlement monitoring rod that solves the problem in the prior art that the main rod and the cover cylinder cannot be coaxial. This utility model uses guide columns to forcibly constrain the position of the cover cylinder, ensuring that it is always coaxial with the main rod. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a roadbed settlement monitoring rod according to this utility model;

[0016] Figure 2 yes Figure 1 A sectional view;

[0017] Figure 3 yes Figure 1 Exploded view;

[0018] Figure 4 yes Figure 2 Structural diagram of the intermediate settlement plate and main rod;

[0019] Figure 5 yes Figure 4 A magnified view of part A in the image;

[0020] Figure 6 This is a schematic diagram of the elastic sleeve structure;

[0021] Figure 7 yes Figure 6 A sectional view.

[0022] In the figure, 1. Settlement plate, 2. Main rod body, 21. Probe, 3. Cover, 31. Cover, 32. Protruding edge, 4. Guide device, 41. Guide column, 411. Guide block, 412. Guide slope, 5. Elastic sleeve, 51. Upper fixing ring, 52. Lower fixing ring, 53. Spring piece, 531. Straight section, 532. First bending section, 533. Second bending section. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] The orientations mentioned in this specification are based on the orientation of the roadbed settlement monitoring pole of this utility model when it is working normally. They do not limit the orientation during storage and transportation, and only represent relative positional relationships, not absolute positional relationships.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, a roadbed settlement monitoring pole includes a settlement plate 1, a main pole body 2, a cover 3, and a guide device 4.

[0026] Settlement plate 1 is a square or round steel plate; in this embodiment, it is a square structure, which increases the contact area with the foundation and prevents local subsidence. The settlement plate 1 is equipped with fixing holes. After the construction workers lay a horizontal concrete foundation on the roadbed, they install the settlement plate 1 onto the foundation using bolts and fixing holes.

[0027] The bottom of the main pole 2 is fixedly installed on the settlement plate 1, and its material is galvanized steel pipe or stainless steel pipe. It can be fixed to the settlement plate 1 by welding or screwing. The top of the main pole 2 is detachably equipped with a measuring head 21, which is a measurement mark, usually hemispherical or stainless steel measuring nail, to facilitate the measurement of elevation by a level or total station.

[0028] The cover 3 is positioned above the settlement plate 1 and covers the outside of the main pole 2. The top of the cover 3 is lower than the height of the main pole 2 but higher than the backfill surface; the bottom of the cover 3 does not contact the settlement plate 1. The function of the cover 3 is to protect the main pole 2 and prevent external factors from interfering with it.

[0029] Furthermore, a cover 31 is detachably installed on the top of the cover cylinder 3. The height of the cover 31 is higher than the height of the probe 21. The cover 31 closes the cover cylinder 3, thereby enclosing the probe 21 inside it. This prevents foreign objects from entering the cover cylinder 3 and provides better protection for the main rod 2 and the probe 21. The cover 31 can be opened only when measuring. The cover 31 can be fixed to the top of the cover cylinder 3 by plugging or screwing.

[0030] Furthermore, the bottom of the cover 3 is provided with a raised edge 32 extending to its periphery. The raised edge 32 increases the contact area with the soil layer, making the cover 3 more stable in the soil layer and less prone to tilting or moving.

[0031] Furthermore, the outer wall of the cover 3 is provided with ribs or protrusions (not shown in the figure) to enhance the interlocking force with the soil, which can improve the bonding strength between the cover 3 and the surrounding soil and further enhance the stability of the cover 3.

[0032] A guiding device 4 is mounted on the settlement plate 1 to guide the cover cylinder 3 to be coaxial with the main rod body 2. The guiding device 4 includes multiple guide posts 41 fixed to the settlement plate 1 and extending upwards; these guide posts 41 are evenly distributed around the circumference of the main rod body 2, forming a circular guide platform. The cover cylinder 3 is inserted into the guide platform and is positioned by it. The guide platform formed by the guide posts 41 ensures that the cover cylinder 3 remains coaxial with the main rod body 2 during installation, avoiding collisions and protective failures caused by misalignment.

[0033] like Figure 5 As shown, a guide block 411 is further provided on the guide post 41. The guide block 411 is an arc-shaped block, and its outer diameter is consistent with the inner diameter of the cover cylinder 3. The arc-shaped guide block 411 can better fit against the inner wall of the cover cylinder 3, guiding the cover cylinder 3 to be smoothly inserted into the guide platform.

[0034] Furthermore, the upper outer part of the arc-shaped block is provided with a guide slope 412 for guiding the insertion of the cover cylinder 3, which facilitates the smooth insertion of the cover cylinder 3 into the guide platform during installation and improves installation efficiency.

[0035] After the above structure is completed, the settlement plate 1 is first fixed to the main pole 2 and buried in the roadbed base; the subgrade layer is laid until the guide post 41 is partially exposed; the cover 3 is inserted along the guide post 41, with its bottom pressed against the subgrade layer, and the guide platform restricts its radial displacement. Backfilling continues to the design elevation. The guide post 41 forcibly constrains the position of the cover 3, ensuring it remains coaxial with the main pole 2. After laying the subgrade layer in layers, the cover 3 is installed, and the exposed guide post 41 is limited, simplifying the construction process.

[0036] However, the above structure only forms a limit at the bottom of the cover 3, but there is no limit at the top of the cover 3, so it is still easy to tilt.

[0037] like Figure 6 and Figure 7 As shown, to solve the above problems, an elastic sleeve 5 is provided above the cover 3; the elastic sleeve 5 includes an upper fixing ring 51 and a lower fixing ring 52 fixed to the main rod 2. The upper fixing ring 51 and the lower fixing ring 52 are respectively fixed to the main rod 2 and tightened by bolts to prevent them from moving up and down. The upper fixing ring 51 and the lower fixing ring 52 are connected by multiple spring pieces 53, which are arc-shaped pieces that bend outward in the middle; the middle part of the arc-shaped pieces abuts against the inner wall of the cover 3. The elastic sleeve 5 can play a buffering and supporting role between the cover 3 and the main rod 2, further ensuring the coaxiality of the two.

[0038] Furthermore, the arc-shaped spring piece 53 includes a straight segment 531 disposed at its upper and lower ends and fixedly mounted on the upper fixing ring 51 or the lower fixing ring 52, a first curved segment 532 connected to the straight segment 531 and bent towards the central axis of the upper fixing ring 51 and the lower fixing ring 52, and a second curved segment 533 connecting the two first curved segments 532 and bending away from the central axis; the second curved segment 533 abuts against the inner wall of the cover 3. This structure of the spring piece 53 can better adapt to the relative positional changes between the cover 3 and the main rod 2, providing stable support and cushioning.

[0039] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A roadbed settlement monitoring pole, characterized in that: Includes settling plate, main rod, cover and guide device; The bottom of the main rod is fixedly installed on the settlement plate, and a probe is installed on its top. The cover is positioned above the settlement plate and covers the outside of the main pole. The top of the cover is lower than the height of the main pole and higher than the backfill surface, and the bottom does not contact the settlement plate. The guiding device is disposed on the settlement plate and is used to guide the cover cylinder to be coaxial with the main rod body; the guiding device includes multiple guide columns fixed on the settlement plate and extending upward; the multiple guide columns are evenly disposed on the circumference of the main rod body and form a circular guide platform; the cover cylinder is inserted into the guide platform and is limited by the guide platform.

2. A roadbed settlement monitoring pole according to claim 1, characterized in that: A cover is detachably installed on the top of the shroud, and the cover closes the shroud.

3. A roadbed settlement monitoring pole according to claim 1, characterized in that: The bottom of the cover is provided with a raised edge extending to its periphery, which increases the contact area with the soil layer.

4. A roadbed settlement monitoring pole according to claim 1, characterized in that: The outer wall of the cover is provided with ribs or protrusions to enhance the interlocking force with the soil.

5. A roadbed settlement monitoring pole according to claim 1, characterized in that: A guide block is provided on the guide post. The guide block is an arc-shaped block, and its outer diameter is the same as the inner diameter of the cover.

6. A roadbed settlement monitoring pole according to claim 5, characterized in that: The upper outer part of the arc-shaped block is provided with a guide slope for guiding the insertion of the cover.

7. A roadbed settlement monitoring pole according to claim 1, characterized in that: An elastic sleeve is provided above the cover; The elastic sleeve includes an upper fixing ring and a lower fixing ring fixed on the main rod body. The upper fixing ring and the lower fixing ring are connected by multiple spring pieces. The spring pieces are arc-shaped pieces that bend outward in the middle. The middle part of the arc-shaped pieces abuts against the inner wall of the cover.

8. A roadbed settlement monitoring pole according to claim 7, characterized in that: The arc-shaped spring includes a straight segment disposed at its upper and lower ends and fixedly mounted on the upper or lower fixing ring, a first curved segment connected to the straight segment and bent toward the central axis of the upper and lower fixing rings, and a second curved segment connecting the two first curved segments and bent away from the central axis; the second curved segment abuts against the inner wall of the cover.

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