A bearing plate measuring point leveling device for subgrade resilience modulus measurement

Abstract

The utility model discloses a bearing plate survey point leveling device for roadbed resilience modulus measurement, including roof, sawtooth cutter mechanism, level, hand wheel, drive sleeve, outer sleeve and intermediate sleeve, the bottom one side of roof is installed with two fixed insertion rod subassembly, and the bottom surface other side is installed with two telescopic insertion rod subassembly, sawtooth cutter mechanism includes first connecting rod and metal sheet, and the metal sheet fixed mounting is at the bottom of first connecting rod, and the bottom of metal sheet is installed with sawtooth structure, and the level is installed at the top of metal sheet, and the bottom fixed mounting of hand wheel has drive shaft, and drive shaft rotation is connected on the top of roof, and drive sleeve is covered in first connecting rod outside, and drive sleeve is through gear assembly with drive shaft transmission connection, the utility model discloses through simple hand shake hand wheel, can realize the lifting and rotation of metal sheet and sawtooth structure to the leveling of survey point through metal sheet and sawtooth structure, and simple and convenient operation can satisfy the demand of engineering for efficient, accurate measurement.

Description

Technical Field

[0001] This utility model relates to the field of road engineering technology, and in particular to a bearing plate measuring point leveling device for measuring the resilient modulus of roadbed. Background Technology

[0002] The resilient modulus of the subgrade is one of the key parameters in pavement design, and its accurate acquisition is crucial for ensuring the reliability and durability of the pavement structure. This parameter needs to be tested after the earthwork subgrade is completed. When conducting testing using the bearing plate method (with a bearing plate diameter of 30cm), leveling the testing points is an indispensable preliminary step.

[0003] However, in existing technologies, leveling of measuring points mostly relies on manual operation using scrapers. This manual leveling method has significant drawbacks. On the one hand, it is difficult to accurately control the horizontal state of the measuring points, which easily introduces human error and affects the accuracy of the test data. On the other hand, manual operation is inefficient, which restricts the overall efficiency of the testing work.

[0004] To address this, a bearing plate measuring point leveling device for measuring the resilient modulus of roadbed is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a bearing plate measuring point leveling device for measuring the resilient modulus of roadbed, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a bearing plate measuring point leveling device for measuring the resilient modulus of roadbed, comprising:

[0007] The top plate has two fixed rod assemblies installed on one side of its bottom surface and two telescopic rod assemblies installed on the other side of its bottom surface.

[0008] A sawtooth cutting mechanism, comprising a first connecting rod and a metal plate, wherein the metal plate is fixedly installed at the bottom of the first connecting rod, and a sawtooth structure is installed at the bottom of the metal plate;

[0009] A level, which is mounted on top of the metal plate;

[0010] A handwheel, wherein a drive shaft is fixedly mounted on the bottom of the handwheel, and the drive shaft is rotatably connected to the top surface of the top plate;

[0011] A drive sleeve is sleeved outside the first connecting rod, and the drive sleeve is connected to the drive shaft via a gear assembly.

[0012] An outer sleeve is fixedly mounted on the top plate, and a connecting ring is installed on the top of the outer sleeve. The drive sleeve is rotatably connected to the inner wall of the connecting ring through a bearing.

[0013] An intermediate sleeve is located between the outer sleeve and the drive sleeve, and the bottom of the intermediate sleeve is rotatably connected to the metal plate via a bearing.

[0014] Both the fixed insert rod assembly and the telescopic insert rod assembly are equipped with foot pedals. The intermediate sleeve is slidably connected to the inner wall of the outer sleeve through a first slider assembly, and the first connecting rod is slidably connected to the inner wall of the drive sleeve through a second slider assembly.

[0015] According to the present invention, a bearing plate measuring point leveling device for measuring the resilient modulus of roadbed is provided. The fixed insert rod assembly includes a first insert rod, and the telescopic insert rod assembly includes a fixed sleeve and a screw rod. A drive ring is rotatably connected to the bottom of the fixed sleeve. A limit block is installed on the inner wall of the fixed sleeve. The screw rod is threadedly connected to the inner wall of the drive ring. A limit groove is opened on the screw rod, and the limit block is slidably connected to the limit groove.

[0016] The two first insert rods are fixed to one side of the bottom of the top plate, and the two fixing sleeves are fixed to the other side of the bottom of the top plate; the bottom of the first insert rod and the bottom of the screw are both equipped with a tip, and the foot pedal is installed on the outer side wall of the first insert rod and the outer side wall of the screw.

[0017] According to the present invention, a bearing plate measuring point leveling device for measuring the resilient modulus of roadbed is provided. The sawtooth structure includes a plurality of sawtooth bodies, which are fixedly installed on the bottom of the metal plate and are arranged in an axial array.

[0018] According to the present invention, a bearing plate measuring point leveling device for measuring the resilient modulus of roadbed is provided, wherein the handwheel includes a handwheel disc and a handle, the handwheel disc is fixedly installed on the top of the drive shaft, and the handle is installed on one side of the top surface of the handwheel disc.

[0019] According to the present invention, a bearing plate measuring point leveling device for measuring the resilient modulus of roadbed is provided. The gear assembly includes a first gear and a second gear. The first gear is mounted on the drive shaft, and the second gear is mounted on the top of the drive sleeve. The first gear and the second gear mesh and transmit power.

[0020] According to the present invention, a bearing plate measuring point leveling device for measuring the resilient modulus of roadbed is provided. The first slider assembly includes a first slider and a first groove. The first groove is formed on the outer wall of the intermediate sleeve. The first slider is fixedly installed on the inner wall of the outer sleeve. The first slider is slidably connected to the first groove.

[0021] The second slider assembly includes a second slider and a second slide groove. The second slide groove is formed on the outer wall of the first connecting rod, and the second slider is fixedly installed on the inner wall of the drive sleeve. The second slider is slidably connected to the second slide groove.

[0022] According to the present invention, a bearing plate measuring point leveling device for measuring the resilient modulus of roadbed is provided, wherein the level is a bubble level and the bubble level is set close to the intermediate sleeve.

[0023] According to the present invention, a bearing plate measuring point leveling device for measuring the resilient modulus of roadbed is provided, wherein crossbars are installed between the two first inserts, between the two fixed sleeves, and between the first inserts and the fixed sleeves.

[0024] The present invention discloses the following technical effects:

[0025] This invention uses a hand-cranked handwheel to rotate, which in turn drives the drive shaft to rotate. The drive shaft, in turn, drives the drive sleeve to rotate via a gear assembly. Under the radial limit of the second slider assembly, the first connecting rod rotates synchronously with the rotation of the drive sleeve, thereby driving the metal plate to rotate. Simultaneously, as the drive sleeve rotates, the intermediate sleeve, which is threadedly connected to the drive sleeve, moves. Under the radial limit of the outer sleeve, the intermediate sleeve rises and falls, thereby driving the metal plate to rise and fall. In other words, the metal plate and the sawtooth structure can be raised, lowered, and rotated by a simple hand-cranked handwheel, thus leveling the measuring points through the metal plate and the sawtooth structure. The operation is simple and convenient, and can meet the engineering requirements for efficient and accurate measurement.

[0026] When using this invention, align the device with the measuring point, place the two fixed insertion rod assemblies at the higher part of the sloping roadbed, and the two telescopic insertion rod assemblies at the lower part. Using a foot pedal, the two fixed insertion rod assemblies and the two telescopic insertion rod assemblies can be inserted into the soil to ensure the overall stability of the device. Then, by adjusting the length of the telescopic insertion rod assemblies in conjunction with a level, the metal plate can be leveled and brought into contact with the higher part of the roadbed. Next, by rotating the handwheel, the serrated structure at the bottom of the metal plate begins to cut the soil, producing loose soil material. Once a certain amount of loose soil has been produced... When loose soil or material affects the continued cutting and compaction of the soil, rotate the handwheel in the opposite direction to lift the metal plate, manually remove the loose soil, and then rotate the handwheel clockwise to continue cutting. Repeat this operation. When the side of the saw tooth structure close to the adjusting telescopic rod assembly just touches the roadbed surface, stop the hand-cranking operation. During the hand-cranking process, pay attention to the level. If the metal plate is not level, adjust it in time to ensure that the metal plate is level. Finally, remove the device, remove the loose soil, and then manually tidy it up to form a level surface at the measuring point. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 for Figure 1 A magnified view of part A in the image;

[0030] Figure 3 for Figure 1 A magnified view of part B in the image;

[0031] Figure 4 This is a schematic diagram showing the installation of the fixed insertion rod assembly, the telescopic insertion rod assembly, and the top plate in this utility model;

[0032] Figure 5 This is a schematic diagram of the sawtooth structure in this utility model;

[0033] Figure 6 This is a schematic diagram of the telescopic insertion rod assembly in this utility model.

[0034] The components are as follows: 1. Top plate; 2. First connecting rod; 3. Metal plate; 4. Level; 5. Drive shaft; 6. Drive sleeve; 7. Outer sleeve; 8. Connecting ring; 9. Intermediate sleeve; 10. Foot pedal; 11. First insert rod; 12. Fixed sleeve; 13. Drive ring; 14. Screw; 15. Limiting block; 16. Limiting groove; 17. Tip; 18. Serrated body; 19. Handwheel; 20. Handle; 21. First gear; 22. Second gear; 23. Crossbar. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Reference Figures 1-6 This utility model provides a bearing plate measuring point leveling device for measuring the resilient modulus of roadbed, comprising:

[0038] Top plate 1, with two fixed rod assemblies installed on one side of the bottom surface and two telescopic rod assemblies installed on the other side of the bottom surface;

[0039] The sawtooth cutting mechanism includes a first connecting rod 2 and a metal plate 3. The metal plate 3 is fixedly installed at the bottom of the first connecting rod 2, and a sawtooth structure is installed at the bottom of the metal plate 3.

[0040] Level 4 is mounted on top of metal plate 3;

[0041] The handwheel has a drive shaft 5 fixedly mounted on its bottom, and the drive shaft 5 is rotatably connected to the top surface of the top plate 1.

[0042] Drive sleeve 6 is sleeved outside the first connecting rod 2, and drive sleeve 6 is connected to drive shaft 5 through gear assembly;

[0043] The outer sleeve 7 is fixedly installed on the top plate 1. A connecting ring 8 is installed on the top of the outer sleeve 7. The drive sleeve 6 is rotatably connected to the inner wall of the connecting ring 8 through a bearing.

[0044] Intermediate sleeve 9 is located between outer sleeve 7 and drive sleeve 6, and the bottom of intermediate sleeve 9 is rotatably connected to metal plate 3 via bearing;

[0045] Both the fixed insert rod assembly and the telescopic insert rod assembly are equipped with foot pedals 10. The intermediate sleeve 9 is slidably connected to the inner wall of the outer sleeve 7 through the first slider assembly, and the first connecting rod 2 is slidably connected to the inner wall of the drive sleeve 6 through the second slider assembly.

[0046] With this configuration, the present invention drives the handwheel to rotate by hand, thereby driving the drive shaft 5 to rotate, and driving the drive sleeve 6 to rotate through the gear assembly. Under the radial limit of the second slider assembly, the first connecting rod 2 rotates synchronously with the rotation of the drive sleeve 6, thereby driving the metal plate 3 to rotate. At the same time, as the drive sleeve 6 rotates, the intermediate sleeve 9, which is threadedly connected to the drive sleeve 6, moves. The intermediate sleeve 9 is raised and lowered under the radial limit of the outer sleeve 7, thereby driving the metal plate 3 to rise and fall. That is, by simply cranking the handwheel, the metal plate 3 and the sawtooth structure can be raised, lowered and rotated, thereby leveling the measuring point through the metal plate 3 and the sawtooth structure. The operation is simple and convenient, which can meet the engineering requirements for efficient and accurate measurement.

[0047] When using this invention, align the device with the measuring point, place the two fixed insertion rod assemblies at the higher part of the sloping roadbed, and the two telescopic insertion rod assemblies at the lower part. The two fixed insertion rod assemblies and the two telescopic insertion rod assemblies can be inserted into the soil using the foot pedal 10 to ensure the stability of the entire device. Then, by adjusting the length of the telescopic insertion rod assemblies in conjunction with the level 4, the metal plate 3 can be leveled and brought into contact with the higher part of the roadbed. Next, by rotating the handwheel, the serrated structure at the bottom of the metal plate 3 begins to cut the soil, producing loose soil material. Once a certain amount of loosening is achieved... If loose soil affects the continued cutting and compaction of the soil, rotate the handwheel in the opposite direction to lift the metal plate 3, manually remove the loose soil, and then rotate the handwheel clockwise to continue cutting. Repeat this operation. When the side of the saw tooth structure close to the adjusting telescopic rod assembly just touches the roadbed surface, stop the hand-cranking operation. During the handwheel rotation, observe the level 4. If the metal plate 3 is not level, adjust it in time to ensure that the metal plate 3 is level. Finally, remove the device, remove the loose soil, and then manually tidy it up to form a level surface at the measuring point.

[0048] The scheme is further optimized. The fixed insertion rod assembly includes a first insertion rod 11, and the telescopic insertion rod assembly includes a fixed sleeve 12 and a screw 14. The bottom of the fixed sleeve 12 is rotatably connected to a drive ring 13. A limit block 15 is installed on the inner wall of the fixed sleeve 12. The screw 14 is threadedly connected to the inner wall of the drive ring 13. A limit groove 16 is opened on the screw 14. The limit block 15 is slidably connected to the limit groove 16.

[0049] Two first insert rods 11 are fixed to one side of the bottom of the top plate 1, and two fixed sleeves 12 are fixed to the other side of the bottom of the top plate 1; a tip 17 is installed on the bottom of the first insert rod 11 and the bottom of the screw 14, and a foot pedal 10 is installed on the outer side wall of the first insert rod 11 and the outer side wall of the screw 14.

[0050] In this embodiment, the length of the first insertion rod 11 is 50cm, and the overall length of the retractable insertion rod assembly is 3-5cm longer than the length of the first insertion rod 11; the foot pedal 10 is located 5cm from the bottom of the first insertion rod 11 and 8cm from the bottom of the screw 14.

[0051] When the length of the telescopic rod assembly needs to be adjusted, the drive ring 13 is rotated, which drives the screw 14 to move up and down within the fixed sleeve 12. At the same time, the limiting block 15 slides within the limiting groove 16, ensuring that the screw 14 moves stably without rotating. The tip 17 facilitates insertion into the soil. By adjusting the length of the telescopic rod assembly, it can adapt to roadbeds with different slopes, ensuring that the device is stable and the metal plate 3 is in a horizontal state.

[0052] Further optimization of the scheme: the sawtooth structure includes several sawtooth bodies 18, which are fixedly installed on the bottom of the metal plate 3, and the sawtooth bodies 18 are arranged in an axial array.

[0053] The sawtooth body 18 is arranged in an axial array to form a concentric circle structure. In this embodiment, the thickness of the metal plate 3 is 2cm, the height of the sawtooth body 18 is 1.5cm, the maximum diameter of the concentric circle is 35cm, the next is 34cm (that is, the circumferential spacing of the concentric circles is 0.5cm), and so on, with the minimum diameter of the concentric circle being 2cm. The sawtooth body 18 makes a circular cut to the roadbed, loosening the soil.

[0054] The design is further optimized so that the handwheel includes a handwheel disc 19 and a handle 20. The handwheel disc 19 is fixedly installed on the top of the drive shaft 5, and the handle 20 is installed on one side of the top surface of the handwheel disc 19.

[0055] The scheme is further optimized. The gear assembly includes a first gear 21 and a second gear 22. The first gear 21 is mounted on the drive shaft 5, and the second gear 22 is mounted on the top of the drive sleeve 6. The first gear 21 and the second gear 22 mesh and transmit power.

[0056] In a further optimized design, the first slider assembly includes a first slider and a first slide groove. The first slide groove is formed on the outer wall of the intermediate sleeve 9, and the first slider is fixedly installed on the inner wall of the outer sleeve 7. The first slider is slidably connected to the first slide groove.

[0057] The second slider assembly includes a second slider and a second slide groove. The second slide groove is formed on the outer wall of the first connecting rod 2, and the second slider is fixedly installed on the inner wall of the drive sleeve 6. The second slider is slidably connected to the second slide groove.

[0058] To further optimize the design, the level 4 adopts a bubble level, and the bubble level is positioned close to the middle sleeve 9.

[0059] In a further optimized design, crossbars 23 are installed between the two first insert rods 11, between the two fixed sleeves 12, and between the first insert rod 11 and the fixed sleeve 12. In this embodiment, the distances between the two first insert rods 11, between the two fixed sleeves 12, and between the first insert rod 11 and the fixed sleeve 12 are all 40cm. The crossbars 23 are used to improve the structural strength.

[0060] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A bearing plate measurement point leveling device for subgrade modulus of resilience measurement, characterized by, include: Top plate (1), two fixed rod assemblies are installed on one side of the bottom of the top plate (1), and two telescopic rod assemblies are installed on the other side of the bottom surface; A sawtooth cutting mechanism, the sawtooth cutting mechanism includes a first connecting rod (2) and a metal plate (3), the metal plate (3) is fixedly installed at the bottom of the first connecting rod (2), and a sawtooth structure is installed at the bottom of the metal plate (3); A level (4) is mounted on top of the metal plate (3); A handwheel, the bottom of which is fixedly mounted with a drive shaft (5), the drive shaft (5) being rotatably connected to the top surface of the top plate (1); Drive sleeve (6), the drive sleeve (6) is sleeved on the outside of the first connecting rod (2), and the drive sleeve (6) is connected to the drive shaft (5) through a gear assembly; The outer sleeve (7) is fixedly installed on the top plate (1), and a connecting ring (8) is installed on the top of the outer sleeve (7). The drive sleeve (6) is rotatably connected to the inner wall of the connecting ring (8) through a bearing. An intermediate sleeve (9) is located between the outer sleeve (7) and the driving sleeve (6). The bottom of the intermediate sleeve (9) is rotatably connected to the metal plate (3) via a bearing. The intermediate sleeve (9) is threadedly connected to the driving sleeve (6). Both the fixed insert rod assembly and the telescopic insert rod assembly are equipped with foot pedals (10), the intermediate sleeve (9) is slidably connected to the inner wall of the outer sleeve (7) through the first slider assembly, and the first connecting rod (2) is slidably connected to the inner wall of the drive sleeve (6) through the second slider assembly.

2. The bearing plate measurement point leveling device for subgrade resilient modulus measurement according to claim 1, characterized in that: The fixed insert rod assembly includes a first insert rod (11), and the telescopic insert rod assembly includes a fixed sleeve (12) and a screw (14). The bottom of the fixed sleeve (12) is rotatably connected to a drive ring (13). A limit block (15) is installed on the inner wall of the fixed sleeve (12). The screw (14) is threadedly connected to the inner wall of the drive ring (13). A limit groove (16) is opened on the screw (14). The limit block (15) is slidably connected to the limit groove (16). Two first insert rods (11) are fixed to one side of the bottom of the top plate (1), and two fixed sleeves (12) are fixed to the other side of the bottom of the top plate (1); a tip (17) is installed on the bottom of the first insert rod (11) and the bottom of the screw (14), and the foot pedal (10) is installed on the outer side wall of the first insert rod (11) and the outer side wall of the screw (14).

3. The bearing plate test point leveling device for subgrade resilient modulus measurements of claim 1, wherein: The sawtooth structure includes a plurality of sawtooth bodies (18), which are fixedly installed on the bottom of the metal plate (3) and are arranged in an axial array.

4. The bearing plate test point leveling device for subgrade resilient modulus measurements of claim 1, wherein: The handwheel includes a handwheel disc (19) and a handle (20). The handwheel disc (19) is fixedly mounted on the top of the drive shaft (5), and the handle (20) is mounted on one side of the top surface of the handwheel disc (19).

5. The bearing plate test point leveling device for subgrade resilient modulus measurements of claim 1, wherein: The gear assembly includes a first gear (21) and a second gear (22). The first gear (21) is mounted on the drive shaft (5), and the second gear (22) is mounted on the top of the drive sleeve (6). The first gear (21) and the second gear (22) mesh and drive each other.

6. The bearing plate test point leveling device for subgrade resilient modulus measurements of claim 1, wherein: The first slider assembly includes a first slider and a first groove. The first groove is formed on the outer wall of the intermediate sleeve (9). The first slider is fixedly installed on the inner wall of the outer sleeve (7). The first slider is slidably connected to the first groove. The second slider assembly includes a second slider and a second slide groove. The second slide groove is formed on the outer wall of the first connecting rod (2). The second slider is fixedly installed on the inner wall of the drive sleeve (6). The second slider is slidably connected to the second slide groove.

7. The bearing plate test point leveling device for subgrade resilient modulus measurements of claim 1, wherein: The level (4) is a bubble level, and the bubble level is positioned close to the intermediate sleeve (9).

8. The bearing plate test point leveling device for subgrade resilient modulus measurements of claim 2, wherein: A crossbar (23) is installed between the two first inserts (11), between the two fixed sleeves (12), and between the first insert (11) and the fixed sleeve (12).

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