Novel roadbed settlement observation device

Abstract

The utility model discloses a novel roadbed settlement observation device which comprises a bottom plate, a measuring rod, a threaded pipe cap and a welding auxiliary assembly, an inner threaded cylinder is fixedly arranged in the center of the bottom plate, the measuring rod is arranged on the inner side of the inner threaded cylinder and is in threaded connection with the inner threaded cylinder, the outer side of the top end of the measuring rod is sleeved with the threaded pipe cap, and a level bubble is arranged at the top end of the threaded pipe cap; determining whether the whole device is horizontally placed by observing whether a bubble of the level bubble is kept in the center; and the welding auxiliary assembly is used for assisting the welding work of the bottom plate and the internal thread cylinder in the early stage. The road settlement observation device is mainly used in the technical field of road settlement observation, the vertical condition of the measuring rod can be monitored at any time by arranging the measuring rod detachably connected with the bottom plate and arranging the level bubble at the top end of the measuring rod, meanwhile, the welding auxiliary assembly is arranged, the manual workload can be saved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of settlement observation, and particularly relates to a novel roadbed settlement observation device. Background Art

[0002] In recent years, with the growth of the construction scale of highways in my country, the roadbed is prone to subsidence during highway construction due to the influence of many factors such as geology, fill type, and construction technology. If the subsidence of the roadbed is not properly handled, it will lead to a decrease in the subsequent road surface flatness, and even cracking and subsidence of the road surface. In order to detect the subsidence of the highway subgrade in real time during the construction process, the settlement plate method is usually used for settlement measurement. In order to grasp the subsidence of the highway subgrade in real time and ensure the safety and stability of the subgrade, users usually use the subgrade settlement plate to observe the highway subgrade during the construction of the highway subgrade. For example: Patent No. CN205879166U discloses a settlement plate. When the settlement plate is arranged on the top surface of the base bed, during the roadbed filling construction, it is necessary to confirm that the settlement plate is in a horizontal state and the middle measuring rod is in a vertical state to ensure the accuracy of the subsequent observation of the highway roadbed. At this time, the user usually uses a level to calibrate the settlement plate repeatedly to ensure that it is in a horizontal state and the middle measuring rod is in a vertical state. The repeated calibration process is relatively cumbersome; for another example: Patent No. CN213397047U discloses a settlement plate for roadbed settlement observation. The device is equipped with level bubbles at the four corners of the bottom plate. Although it solves the above-mentioned "one The problem of "type settlement plate" requiring repeated use of level to calibrate the settlement plate exists, but this device is not suitable for measuring the roadbed settlement problem of expressways. The settlement plate is buried underground, and the measuring rod is connected to the top. When it is placed at the beginning, it can indeed monitor whether the bottom plate is in a horizontal state. However, as the layers of fill increase, the level bubbles installed at the four corners of the bottom plate cannot be observed, and it is also impossible to observe whether the measuring rod is in a vertical state. The level instrument is still needed to operate to confirm whether the measuring rod is in a vertical state. As the fill continues to increase, the number of sections of the measuring rod is also increasing. Therefore, it is particularly important to check whether the measuring rod is in a vertical state, because it will affect the later data collection. Utility Model Content

[0003] The purpose of the utility model is to propose a new roadbed settlement observation device to solve the problem that the settlement plate needs to be corrected repeatedly using a level and it is inconvenient to measure the vertical state of the measuring rod. The utility model is provided with a measuring rod detachably connected to the bottom plate and a level bubble is provided at the top of the measuring rod, so that the vertical state of the measuring rod can be monitored at all times. At the same time, it is equipped with a welding auxiliary component, which can save manual workload and improve work efficiency.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A novel roadbed settlement observation device comprises a base plate, a measuring rod, a threaded pipe cap, and a welding auxiliary component; an internal threaded barrel is fixedly provided in the center of the base plate, the measuring rod is provided on the inner side of the internal threaded barrel, the measuring rod is threadedly connected to the internal threaded barrel, the threaded pipe cap is sleeved on the outer side of the top end of the measuring rod, a level bubble is provided on the top end of the threaded pipe cap, and whether the entire device is in a horizontal position is determined by observing whether the bubble of the level bubble remains in the center; the welding auxiliary component is used to assist the early welding work of the base plate and the internal threaded barrel.

[0006] As a further technical improvement, the welding auxiliary component includes a surveying component and a rotating base; the surveying component and the rotating base are used in conjunction with each other, the top of the rotating base is used to place the base plate, and the surveying component is used to mark the top surface of the base plate.

[0007] As a further technical improvement, the surveying and mapping assembly includes a main ruler, measuring claws, an ink fountain, an ink line, a fastening nut and a right-angle hook; the main ruler is in the shape of a rectangular strip; the right-angle hook includes a front right-angle hook and a rear right-angle hook; the measuring claws include a first measuring claw and a second measuring claw, the second measuring claw is fixedly connected to one end of the long side of the main ruler, the first measuring claw is slidably arranged on the long side of the main ruler, and the long side of the main ruler passes through the first measuring claw; the bottom ends of the first measuring claw and the second measuring claw are each provided with a cylindrical tip, the bottom side of the sliding connection part of the first measuring claw and the main ruler is provided with a fastening nut, and the top end of the first measuring claw is provided with the ink fountain, and the ink line is provided inside the ink fountain; the outer end of the ink line is connected to the bottom side of the front right-angle hook, the front right-angle hook is arranged on the second measuring claw, and the rear right-angle hook is arranged on the side of the ink fountain opposite to the front right-angle hook, and the front right-angle hook and the rear right-angle hook are arranged diagonally.

[0008] As a further technical improvement, the rotating base includes a tray, a chassis and a rotating mechanism; the chassis is in the shape of a rectangular plate, and cylindrical feet are provided at the four corners of the chassis on the side in contact with the ground. The rotating mechanism is fixedly connected to the top of the chassis, and the tray is provided at the top of the rotating mechanism.

[0009] As a further technical improvement, the measuring rod is provided with several sections, and the measuring rods of several sections can be spliced ​​with each other. The joints of the measuring rods of several sections are provided with threaded joints, and the measuring rods of several sections are spliced ​​with each other through the action of the threaded joints.

[0010] As a further technical improvement, the bottom and top ends of the measuring rod are respectively provided with a first thread strip and a second thread strip, the threaded pipe cap is threadedly connected to the measuring rod through the second thread strip, and the bottom end of the measuring rod is threadedly connected to the internal threaded barrel through the first thread strip.

[0011] As a further technical improvement, the threaded pipe cap is in the shape of a hollow cylinder, and includes an inlay groove, a threaded barrel and a pipe cap; one end of the threaded barrel is fixedly connected to the pipe cap, and the inlay groove is provided in the center of the other end of the pipe cap, and the level bubble is connected to the threaded pipe cap through the inlay groove; the interior of the threaded barrel is hollow and provided with threads, and the threaded barrel is sleeved on the outer side of the top end of the measuring rod and is threadedly connected to the measuring rod.

[0012] As a further technical improvement, the threaded joint includes a threaded connection tube and a separating ring; the threaded connection tube has the same inner diameter as the threaded pipe cap, and is also provided with threads inside. Two threaded connection tubes are provided, and the two threaded connection tubes are fixedly connected by the separating ring. The interiors of the two threaded connection tubes are connected to the separating ring, and the threaded connection tube has the same inner diameter as the internal threaded tube.

[0013] As a further technical improvement, the base plate, measuring rod, threaded pipe cap, and corresponding connecting parts are all made of lithium alloy.

[0014] As a further technical improvement, the threaded joint and the threaded pipe cap can be interchangeably arranged at one end of the measuring rod.

[0015] Compared with the existing technology, the utility model has the following beneficial effects:

[0016] 1. The utility model has a simple structure and is easy to operate. A measuring rod is fixed vertically at the center of the base plate, and a level bubble is fixed on the top of the measuring rod. The user can directly judge whether the base plate is horizontal and whether the measuring rod is vertical through the level bubble, without the need to calibrate the device with a level calibrator. The equipment ensures high observation accuracy and good stability, making the operation of the staff more convenient and improving work efficiency.

[0017] 2. The utility model is equipped with a welding auxiliary component, which includes a surveying component and a rotating base. The top of the rotating base is used to place the base plate. The surveying component can draw lines on the base plate to confirm that the internal threaded barrel is placed in the center of the base plate by drawing lines, thereby ensuring that the base plate is evenly stressed when the settlement plate is in use. When welding the base plate and the internal threaded barrel, the base plate can be rotated by the action of the rotating base, and the contact surface of the base plate and the internal threaded barrel can be welded while rotating, which can save personnel workload and improve work efficiency.

[0018] 3. Both ends of the measuring rod of the utility model are provided with the same threaded strips, both of which can be threadedly connected to the bottom plate, and both ends can be sleeved with threaded pipe caps and threaded joints, which can realize convenient replacement and save manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the disassembled three-dimensional structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the measuring rod of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the threaded pipe cap of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the threaded joint of the utility model;

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the surveying and mapping component of the utility model;

[0026] Figure 7 It is a front view structural schematic diagram of the surveying and mapping component of the utility model;

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the rotating base of the utility model.

[0028] Description of reference numerals:

[0029] 1-base plate, 2-measuring rod, 3-threaded pipe cap, 4-level bubble, 5-threaded joint, 6-surveying assembly, 7-rotating base, 11-internal threaded cylinder, 21-first threaded strip, 22-second threaded strip, 31-inlay groove, 32-threaded cylinder, 33-pipe cap, 51-threaded connecting cylinder, 52-separating ring, 61-main ruler, 62-first measuring claw, 63-second measuring claw, 64-ink fountain, 65-fastening nut, 66-front right angle hook, 67-rear right angle hook, 68-ink line, 71-tray, 72-chassis, 73-rotating mechanism. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is a description of the embodiments of the present invention based on its overall structure.

[0034] like Figures 1 to 5As shown, the utility model provides a new type of roadbed settlement observation device, including a base plate 1, a measuring rod 2, a threaded pipe cap 3, and a welding auxiliary component; an internal threaded barrel 11 is fixedly arranged in the center of the base plate 1, the measuring rod 2 is arranged on the inner side of the internal threaded barrel 11, the measuring rod 2 is threadedly connected with the internal threaded barrel 11, the threaded pipe cap 3 is sleeved on the outer side of the top end of the measuring rod 2, and a level bubble 4 is arranged on the top end of the threaded pipe cap 3, and whether the whole device is in a horizontal position is determined by observing whether the bubble of the level bubble 4 is kept in the center; the welding auxiliary component is used to assist the early welding work of the base plate 1 and the internal threaded barrel 11. In this embodiment, the bottom plate 1, the measuring rod 2, and the threaded pipe cap 3 are pre-assembled into the shape of a settlement plate. Before assembly, some preliminary preparation work is required. The bottom plate 1 adopts a rectangular plate with a thickness between 8 mm and 30 mm. One of the two larger side surfaces is placed on the top surface of the rotating base 7. The center point is drawn on the top surface of the bottom plate 1 by using the surveying and mapping component 6. The outer diameter of the internal threaded tube 11 is measured in advance by using the surveying and mapping component 6, and then the radius of the internal threaded tube 11 is obtained. The surveying and mapping component 6 is rotated at the center point of the bottom plate 1 to obtain a circular scratch in the center of the bottom plate. One end of the internal threaded tube 11 is aligned with the circular scratch and placed. Then, the internal threaded tube 11 and the bottom plate 1 are welded together by welding equipment. The contact edges are welded. Since the base plate 1 is placed on a rotating base 7, the welding angle can be freely rotated, which is time-saving and convenient. Then the measuring rod 2 can be connected, and the installation can be completed after the threaded pipe cap 3 and the level bubble 4 are placed on the top of the measuring rod 2. Before the settlement plate is buried, a layer of filler is laid on the predicted leveled roadbed and compacted. Then, a pit that can accommodate the base plate 1 of the settlement plate is dug at the pre-buried position of the settlement plate, and the bottom of the pit is filled and compacted with yellow sand. By observing whether the bubble in the level bubble 4 on the threaded pipe cap 3 remains in the central position, it is determined whether the measuring rod 2 and the base plate 1 are in a horizontal and vertical position. After the installation is completed, the next step of work data collection can be carried out.

[0035] The welding auxiliary assembly includes a surveying assembly 6 and a rotating base 7; the surveying assembly 6 and the rotating base 7 cooperate with each other, the top of the rotating base 7 is used to place the bottom plate 1, and the surveying assembly 6 is used to draw lines and mark the top surface of the bottom plate 1. This embodiment is the same as above.

[0036] The surveying and mapping assembly 6 includes a main ruler 61, measuring claws, an ink fountain 64, an ink line 68, a fastening nut 65 and a right-angle hook; the main ruler 61 is in the shape of a rectangular strip; the right-angle hook includes a front right-angle hook 66 and a rear right-angle hook 67; the measuring claws include a first measuring claw 62 and a second measuring claw 63, the second measuring claw 63 is fixedly connected to one end of the long side of the main ruler 61, the first measuring claw 62 is slidably arranged on the long side of the main ruler 61, and the long side of the main ruler 61 passes through the first measuring claw 62; the first measuring claw 62 and the second measuring claw 63 are The bottom ends are each provided with a cylindrical tip, the bottom side of the sliding connection portion between the first measuring claw 62 and the main ruler 61 is provided with a fastening nut 65, and the top of the first measuring claw 62 is provided with the ink fountain 64, and the ink line 68 is provided inside the ink fountain 64; the outer end of the ink line 68 is connected to the bottom side of the front right-angle hook 66, and the front right-angle hook 66 is provided on the second measuring claw 63, and the rear right-angle hook 67 is provided on the side of the ink fountain 64 opposite to the front right-angle hook 66, and the front right-angle hook 66 and the rear right-angle hook 67 are diagonally provided. In this embodiment (the surveying and mapping component 6 is similar to a vernier caliper), the surveying and mapping component 6 has three most important usage modes. The first is to draw, by placing the front right-angle hook 66 and the rear right-angle hook 67 at a set of diagonal corners of the bottom plate 1, and then flicking the ink line 68 to draw the line. The same operation is performed for the other set of diagonal corners of the bottom plate 1, so as to obtain the center point located in the center of the bottom plate; the second is to measure, by adjusting the distance between the first measuring claw 62 and the second measuring claw 63, so that the inner sides of the first measuring claw 62 and the second measuring claw 63 are closely attached to the inner threaded tube 11. The outer diameter of the internal threaded barrel 11 is measured, and then the distance between the first measuring claw 62 and the second measuring claw 63 is adjusted again to obtain the radius of the internal threaded barrel 11; the third method is to draw a circular scratch, align the cylindrical tip of the lower end of the second measuring claw 63 with the center point of the base plate 1 and press it, rotate the first measuring claw 62 around the second measuring claw 63, and use the cylindrical tip of the lower end of the first measuring claw 62 to draw a circular scratch; then align one end of the internal threaded barrel 11 with the circular scratch and place it, and use welding equipment to weld the contact edge of the internal threaded barrel 11 and the base plate 1.

[0037] The rotating base 7 includes a tray 71, a chassis 72 and a rotating mechanism 73; the chassis 72 is in the shape of a rectangular plate, and the four corners of the chassis 72 that are in contact with the ground are all provided with cylindrical feet, the top of the chassis 72 is fixedly connected with the rotating mechanism 73, and the top of the rotating mechanism 73 is provided with the tray 71. In this embodiment, the side of the chassis 72 provided with the cylindrical feet is placed on the ground, and the side provided with the tray 71 and the rotating mechanism 73 is facing upward (the tray 71 can rotate 360 ​​degrees under the action of the rotating mechanism 73), and the bottom plate 1 is placed on the tray 71. Due to the action of the rotating mechanism 73, the bottom plate 1 and the internal threaded cylinder 11 can be rotated and welded.

[0038] The measuring rod 2 is provided with a plurality of sections, and the measuring rods 2 of the plurality of sections can be spliced ​​with each other, and threaded joints 5 are provided at the splicing places of the measuring rods 2 of the plurality of sections, and the measuring rods 2 of the plurality of sections are spliced ​​with each other through the threaded joints 5. In this embodiment, threaded joints 5 can be correspondingly provided between every two sections of the measuring rods 2, thereby increasing the stability between every two sections of the measuring rods 2.

[0039] The bottom and top ends of the measuring rod 2 are respectively provided with a first thread strip 21 and a second thread strip 22, the threaded pipe cap 3 is threadedly connected to the measuring rod 2 via the second thread strip 22, and the bottom end of the measuring rod 2 is threadedly connected to the internal threaded barrel 11 via the first thread strip 21. In this embodiment, the first thread strip 21 and the second thread strip 22 have the same number of threads.

[0040] The threaded pipe cap 3 is in the shape of a hollow cylinder, and includes an inlay groove 31, a threaded barrel 32 and a pipe cap 33; one end of the threaded barrel 32 is fixedly connected to the pipe cap 33, and the inlay groove 31 is provided at the center of the other end of the pipe cap 33, and the vial 4 is connected to the threaded pipe cap 3 via the inlay groove 31; the threaded barrel 32 is hollow inside and is provided with threads, and the threaded barrel 32 is sleeved on the outer side of the top end of the measuring rod 2 and is threadedly connected to the measuring rod 2.

[0041] The threaded joint 5 includes a threaded connection barrel 51 and a separation ring 52; the threaded connection barrel 51 has the same inner diameter as the threaded pipe cap 3, and is also provided with threads inside. Two threaded connection barrels 51 are provided, and the two threaded connection barrels 51 are fixedly connected by the separation ring 52. The two threaded connection barrels 51 are connected to the separation ring 52, and the threaded connection barrel 51 has the same inner diameter as the internal threaded barrel 11. In this embodiment, the two threaded connection barrels 51 are respectively sleeved with one end of two sections of the measuring rod 2 to achieve the splicing of several sections of the measuring rod 2.

[0042] The bottom plate 1, the measuring rod 2, the threaded pipe cap 3, and the corresponding connecting parts are all made of lithium alloy. This embodiment is made of lithium alloy, which has the characteristics of not easy to rust and has a long service life.

[0043] The threaded joint 5 and the threaded pipe cap 3 can be interchangeably arranged at one end of the measuring rod 2. In this embodiment, when the next measuring rod 2 needs to be connected, the threaded joint 5 is first sleeved on the measuring rod 2 fixed on the ground, and then another measuring rod 2 is sleeved. After the sleeve connection of the measuring rod 2 is completed, the threaded pipe cap 3 is sleeved on the top of the measuring rod 2 to observe whether the measuring rod 2 is in a horizontal vertical state. If there is a slight deviation, the measuring rod needs to be adjusted appropriately to adjust the measuring rod 2 to a vertical state.

[0044] The method of using the utility model is as follows: pre-assemble the bottom plate 1, the measuring rod 2, and the threaded pipe cap 3 into the shape of a settlement plate. Before assembly, some preliminary preparation work is required. The bottom plate 1 adopts a rectangular plate with a thickness between 8mm and 30mm. One of the two larger side surfaces is placed on the top surface of the rotating base 7. The center point is drawn on the top surface of the bottom plate 1 by the surveying and mapping component 6. The outer diameter of the internal threaded tube 11 is measured in advance by the surveying and mapping component 6, and then the radius of the internal threaded tube 11 is obtained. The surveying and mapping component 6 is used to stand on the center point of the bottom plate 1 and rotate to obtain a circular scratch in the center of the bottom plate. One end of the internal threaded tube 11 is placed at the circular scratch, and then the welding equipment is used to weld the contact edge of the internal threaded tube 11 and the bottom plate 1. Since the bottom plate 1 is placed on the rotating base 7, it can be freely rotated for welding; then the measuring rod 2 can be connected, and the threaded pipe cap 3 and the level bubble 4 are placed on the top of the measuring rod 2 before installation. After the installation is completed, a level meter is placed on the ground to record the measurement readings of the top of the settlement plate. After the recording is completed, fill the top and surrounding of the settlement plate with soil, and measure it again with the level meter to obtain a settlement amount. If soil filling is still needed and the measuring rod 2 is not long enough, replace the threaded pipe cap 3 on the measuring rod 2 with a threaded joint 5, connect another section of the measuring rod 2 to reach the required height for measurement, then measure it with the level meter, and perform soil filling measurement again. After multiple data comparisons, the settlement parameters are obtained.

[0045] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of explanation and illustration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various selections and changes to the embodiments without creative contribution as needed after reading this specification without departing from the principles and purpose of the present invention, but they are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A new type of roadbed settlement observation device, characterized in that: include: A base plate (1), a measuring rod (2), a threaded pipe cap (3), and a welding auxiliary component; an internally threaded barrel (11) is fixedly arranged in the center of the base plate (1), the measuring rod (2) is arranged on the inner side of the internally threaded barrel (11), the measuring rod (2) is threadedly connected to the internally threaded barrel (11), the threaded pipe cap (3) is sleeved on the outer side of the top end of the measuring rod (2), and a level bubble (4) is arranged on the top end of the threaded pipe cap (3), and whether the entire device is in a horizontal position can be determined by observing whether the bubble of the level bubble (4) remains in the center; the welding auxiliary component is used to assist the welding work of the base plate (1) and the internally threaded barrel (11) in the early stage.

2. A novel roadbed settlement observation device according to claim 1, characterized in that: The welding auxiliary component comprises a surveying component (6) and a rotating base (7); the surveying component (6) and the rotating base (7) are used in conjunction with each other, the top of the rotating base (7) is used to place the base plate (1), and the surveying component (6) is used to draw lines and mark the top surface of the base plate (1).

3. A novel roadbed settlement observation device according to claim 2, characterized in that: The surveying and mapping assembly (6) comprises a main scale (61), measuring claws, an ink fountain (64), an ink line (68), a fastening nut (65) and a right-angle hook; the main scale (61) is in the shape of a rectangular strip; the right-angle hook comprises a front right-angle hook (66) and a rear right-angle hook (67); the measuring claws comprise a first measuring claw (62) and a second measuring claw (63), the second measuring claw (63) being fixedly connected to one end of a long side of the main scale (61), the first measuring claw (62) being slidably arranged on the long side of the main scale (61), and the long side of the main scale (61) passing through the first measuring claw (62); the first measuring claw (62) and the second measuring claw (63) are connected to each other. ) are each provided with a cylindrical tip at the bottom end, a fastening nut (65) is provided at the bottom side of the sliding connection portion between the first measuring claw (62) and the main ruler (61), and the ink fountain (64) is provided at the top end of the first measuring claw (62), and the ink line (68) is provided inside the ink fountain (64); the outer end of the ink line (68) is connected to the bottom side of the front right-angle hook (66), the front right-angle hook (66) is provided on the second measuring claw (63), and the rear right-angle hook (67) is provided on a side of the ink fountain (64) opposite to the front right-angle hook (66), and the front right-angle hook (66) and the rear right-angle hook (67) are provided diagonally.

4. A novel roadbed settlement observation device according to claim 2, characterized in that: The rotating base (7) comprises a tray (71), a chassis (72) and a rotating mechanism (73); the chassis (72) is in the shape of a rectangular plate, and cylindrical feet are arranged at the four corners of the side of the chassis (72) contacting the ground, the rotating mechanism (73) is fixedly connected to the top of the chassis (72), and the tray (71) is arranged at the top of the rotating mechanism (73).

5. A novel roadbed settlement observation device according to claim 1, characterized in that: The measuring rod (2) is provided with a plurality of sections, and the measuring rods (2) of the plurality of sections can be spliced ​​with each other. The splicing places of the measuring rods (2) of the plurality of sections are provided with threaded joints (5), and the measuring rods (2) of the plurality of sections are spliced ​​with each other through the action of the threaded joints (5).

6. A novel roadbed settlement observation device according to claim 1, characterized in that: The bottom end and top end of the measuring rod (2) are respectively provided with a first thread strip (21) and a second thread strip (22); the threaded pipe cap (3) is threadedly connected to the measuring rod (2) via the second thread strip (22); and the bottom end of the measuring rod (2) is threadedly connected to the internal threaded barrel (11) via the first thread strip (21).

7. A novel roadbed settlement observation device according to claim 1, characterized in that: The threaded pipe cap (3) is in the shape of a hollow cylinder. The threaded pipe cap (3) comprises an inlay groove (31), a threaded barrel (32) and a pipe cap (33); one end of the threaded barrel (32) is fixedly connected to the pipe cap (33), the other end of the pipe cap (33) is provided with the inlay groove (31) at the center, and the vial (4) is connected to the threaded pipe cap (3) via the inlay groove (31); the threaded barrel (32) is hollow inside and provided with threads, and the threaded barrel (32) is sleeved on the outer side of the top end of the measuring rod (2) and is threadedly connected to the measuring rod (2).

8. The novel roadbed settlement observation device according to claim 5 is characterized in that: The threaded joint (5) comprises a threaded connection tube (51) and a separation ring (52); the threaded connection tube (51) has the same inner diameter as the threaded pipe cap (3), and is also provided with threads inside; two threaded connection tubes (51) are provided, and the two threaded connection tubes (51) are fixedly connected via the separation ring (52); the interiors of the two threaded connection tubes (51) are connected to the separation ring (52); and the threaded connection tube (51) has the same inner diameter as the internal threaded tube (11).

9. A novel roadbed settlement observation device according to claim 8, characterized in that: The base plate (1), the measuring rod (2), the threaded pipe cap (3), and the corresponding connecting parts are all made of lithium alloy.

10. A novel roadbed settlement observation device according to claim 5, characterized in that: The threaded joint (5) and the threaded pipe cap (3) can be interchangeably arranged at one end of the measuring rod (2).

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