Highway subgrade compaction degree measuring device
By designing a device for measuring compaction degree of roadbeds, using structures such as sampling electric cylinders and buffer springs, the problem of large impact when the ring knife is pressed into the soil is solved, and the measurement accuracy is improved.
Patent Information
- Application Number
- CN202420390443.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-02-28
AI Technical Summary
In the existing method of measuring the compaction degree of the roadbed, the ring knife is prone to impact the roadbed when pressed into the soil, resulting in soil disturbance and low measurement accuracy.
A highway roadbed compaction measurement device is designed, using a sampling electric cylinder to drive the sampling ring knife movement, and through structures such as transmission slide rod, mounting sleeve and buffer spring, the impact on the roadbed is reduced and the measurement accuracy is ensured.
By reducing the impact of the sampling ring knife on the roadbed, the soil sample disturbance is reduced and the accuracy of the roadbed compaction measurement is improved.
Smart Images
Figure CN222500194U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of roadbed detection, and in particular to a device for measuring the compaction of a highway roadbed. Background Art
[0002] The roadbed is the foundation of the highway, which is generally compacted soil. Since the compaction quality of the roadbed, i.e. the compaction degree, has a key impact on the bearing capacity and service life of the highway, it is generally necessary to measure the compaction degree of the roadbed after it is compacted.
[0003] In the existing related technologies, the compaction degree of the roadbed is generally measured by the knife ring method. The basic steps of the knife ring method are to first press the knife ring into the roadbed until the soil sample exceeds the top of the knife ring. Then, the knife ring and the soil sample are taken out of the roadbed, and the soil sample exceeding the bottom and top of the knife ring is removed. Finally, the knife ring and the soil sample are transferred to the laboratory, and the specific value of the compaction degree is obtained according to the relevant formula.
[0004] Regarding the above-mentioned related technologies, when the cutter ring is pressed into the soil, it is easy to impact the roadbed, causing the soil sample to be disturbed, resulting in a large difference between the soil sample and the roadbed, which in turn leads to a low precision of the compaction degree measured based on the soil sample. Summary of the invention
[0005] In order to ensure the measurement accuracy of roadbed compaction, the present application provides a highway roadbed compaction measurement device.
[0006] The present application provides a roadbed compaction measuring device that adopts the following technical solution:
[0007] A highway roadbed compaction determination device comprises a frame, a sampling electric cylinder and a sampling piece, wherein the sampling electric cylinder is mounted on the frame and arranged in a vertical direction;
[0008] The sampling part includes a transmission slide rod, a mounting sleeve, a buffer spring and a sampling ring knife. The transmission slide rod is installed on the sampling electric cylinder. The mounting sleeve slides along the vertical direction to cooperate with the transmission slide rod. The two ends of the buffer spring are respectively installed on the transmission slide rod and the mounting sleeve. The sampling ring knife is installed on the mounting sleeve.
[0009] By adopting the above technical solution, the sampling electric cylinder drives the sampling knife ring to move towards the roadbed. When the bottom of the sampling knife ring is close to the roadbed, the extension and retraction speed of the sampling electric cylinder is reduced, so that the sampling knife ring is not easy to have excessive impact on the roadbed. After the sampling knife ring contacts and presses into the roadbed, the installation sleeve slides along the length direction of the transmission slide rod, and the buffer spring gradually deforms with the sliding of the installation sleeve, and further absorbs the impact, thereby further reducing the disturbance of the sampling knife ring to the soil sample, ensuring the measurement accuracy of the roadbed compaction degree.
[0010] Optionally, a sleeve chamber is opened inside the mounting sleeve, the sleeve chamber extends in a vertical direction, a positioning spherical surface is provided at one end of the sleeve chamber, the positioning spherical surface is coaxially arranged with the transmission slide rod, and a positioning ball block is provided at one end of the transmission slide rod corresponding to the positioning spherical surface.
[0011] By adopting the above technical solution, after the installation sleeve slides along the length direction of the transmission slide rod to the positioning spherical surface, the positioning ball block is tightly fitted against the surface of the positioning spherical surface, so that the installation sleeve slides along the surface of the positioning spherical surface to be coaxial with the transmission slide rod, thereby making the installation sleeve less likely to deflect, reducing the occurrence of the sampling ring cutter tilting and pressing into the roadbed disturbed soil sample, thereby further ensuring the measurement accuracy of the roadbed compaction degree.
[0012] Optionally, the sampling member further comprises a mounting ring body, the mounting ring body is mounted on the mounting sleeve, and the sampling ring cutter is threadedly fitted on the mounting ring body.
[0013] By adopting the above technical solution, after the sampling ring knife obtains the soil sample, the sampling ring knife is rotated so that the sampling ring knife is removed from the mounting ring body, thereby facilitating the transfer of the soil sample to the laboratory for testing. After the soil sample testing is completed, the rotating sampling ring knife will be installed on the mounting ring body, thereby facilitating the testing personnel to take and deliver the soil sample.
[0014] Optionally, the mounting ring body is sleeved on the sampling ring cutter, and a cutting edge is provided at the bottom of the mounting ring body.
[0015] By adopting the above technical solution, the cutting edge makes it easier for the installation ring to be pressed into the roadbed, thereby reducing the occurrence of the installation ring being difficult to press into the roadbed and the installation ring disturbing the soil sample when being pressed into the roadbed by the sampling ring cutter, thereby further ensuring the accuracy of the measurement of the roadbed compaction degree.
[0016] Optionally, a soil sample cavity is provided between the sampling ring cutter and the mounting ring body, and the soil sample cavity is located at the top of the sampling ring cutter.
[0017] By adopting the above technical solution, the soil sample cavity provides space for the soil sample to exceed the top of the sampling ring cutter, thereby facilitating ensuring that the sampling ring cutter is filled with sufficient soil sample, reducing the occurrence of errors in calculating the soil sample volume, and further ensuring the accuracy of the measurement of the roadbed compaction degree.
[0018] Optionally, the frame is equipped with a drive motor, and the drive motor is used to drive the transmission slide rod to rotate around the vertical axis.
[0019] By adopting the above technical solution, when the sampling ring cutter is pressed into the roadbed, the driving motor drives the transmission slide rod to rotate, thereby driving the installation sleeve and the sampling ring cutter to rotate, so that the friction between the sampling ring cutter and the roadbed is reduced, thereby facilitating the sampling ring cutter to be quickly pressed into the roadbed to obtain soil samples.
[0020] Optionally, the frame is provided with an adjusting screw, one end of which is threadedly engaged with the frame, and the other end of which is mounted with a supporting pad.
[0021] By adopting the above technical solution, the adjusting screw is rotated according to the roadbed conditions, and the inclination of the frame is adjusted to ensure the verticality of the frame, which is beneficial to ensure that the sampling ring knife is pressed into the soil in the vertical direction and reduce the occurrence of the sampling ring knife tilting.
[0022] Optionally, the frame is equipped with a level, and the level is used to detect the verticality of the sampling ring knife.
[0023] By adopting the above technical solution, the inspector can judge the verticality of the frame according to the spirit level, which makes it easier for the inspector to judge the verticality of the sampling ring knife in real time, thereby ensuring that the sampling ring knife is pressed into the roadbed in the vertical direction.
[0024] In summary, the present application includes at least one of the following beneficial technical effects:
[0025] 1. The sampling electric cylinder drives the sampling knife ring to move towards the roadbed. When the bottom of the sampling knife ring is close to the roadbed, the extension and retraction speed of the sampling electric cylinder is reduced, so that the sampling knife ring is not likely to have excessive impact on the roadbed. After the sampling knife ring contacts and presses into the roadbed, the installation sleeve slides along the length direction of the transmission slide rod, and the buffer spring gradually deforms with the sliding of the installation sleeve, further absorbing the impact, thereby further reducing the disturbance of the sampling knife ring to the soil sample and ensuring the measurement accuracy of the roadbed compaction degree.
[0026] 2. After the installation sleeve slides along the length direction of the transmission slide rod to the positioning spherical surface, the positioning ball block fits tightly against the surface of the positioning spherical surface, so that the installation sleeve slides along the surface of the positioning spherical surface to be coaxial with the transmission slide rod, thereby making it less likely for the installation sleeve to deflect, reducing the occurrence of the sampling ring knife tilting and pressing into the roadbed to disturb the soil sample, thereby further ensuring the accuracy of the measurement of the roadbed compaction degree.
[0027] 3. After the sampling ring knife obtains the soil sample, the sampling ring knife is rotated to remove the sampling ring knife from the mounting ring body, so as to facilitate the transfer of the soil sample to the laboratory for testing. After the soil sample testing is completed, the rotating sampling ring knife will be installed on the mounting ring body, so as to facilitate the testing personnel to take and send the soil sample. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is an overall schematic diagram of the overall structure of the embodiment of the present application.
[0029] Figure 2 It is a partial cross-sectional schematic diagram of the overall structure of the embodiment of the present application.
[0030] Figure 3 It is an overall schematic diagram of the sliding plate of an embodiment of the present application.
[0031] Figure 4 It is a cross-sectional schematic diagram of the transmission connecting rod and the transmission sliding rod of the embodiment of the present application.
[0032] Figure 5 It is a cross-sectional schematic diagram of the sampling piece of the embodiment of the present application.
[0033] Figure 6 yes Figure 5 An enlarged schematic diagram of part A.
[0034] Explanation of the reference numerals: 1. Frame; 11. Mounting top plate; 111. Level; 112. Driving motor; 113. Reducer; 114. Protective cover; 115. Transmission connecting rod; 12. Support guide rod; 121. Adjusting screw; 122. Support pad; 123. Support hemispherical block; 2. Sampling electric cylinder; 21. Sliding plate; 211. Sliding hole; 3. Sampling piece; 301. Soil sample cavity; 31. Transmission sliding rod; 311. Sliding rod chamber; 312. Positioning ball block; 32. Mounting sleeve; 321. Sleeve chamber; 322. Positioning spherical surface; 323. Limiting ring; 33. Buffer spring; 34. Mounting ring body; 341. Cutting edge; 35. Sampling ring cutter. DETAILED DESCRIPTION
[0035] The following is combined with Figure 1-6 This application is described in further detail.
[0036] The present application embodiment discloses a device for measuring the compaction degree of a highway subgrade. Figure 1 The highway subgrade compaction degree measuring device comprises a frame 1, a sampling electric cylinder 2 and a sampling piece 3.
[0037] Reference Figure 1 The frame 1 includes a mounting top plate 11 and four support guide rods 12. The top of the mounting top plate 11 is arranged flat, and the mounting top plate 11 is arranged in a horizontal direction. The four support guide rods 12 are distributed in a rectangular shape, and the four support guide rods 12 are all located at the bottom of the mounting top plate 11. The support guide rods 12 are arranged in a vertical direction, and the tops of the support guide rods 12 are fixedly mounted on the mounting top plate 11.
[0038] Reference Figure 2, a threaded adjustment hole is provided at the bottom of the support guide rod 12, and an adjustment screw 121 is provided in the threaded adjustment hole, and the adjustment screw 121 is arranged in the vertical direction. One end of the adjustment screw 121 is threadedly matched with the threaded adjustment hole, and the other end of the adjustment screw 121 is fixedly installed with a support pad 122, and the support pad 122 is arranged in the horizontal direction, so that the height of the support pad 122 can be adjusted by rotating the adjustment screw 121, so that the support guide rod 12 is still arranged in the vertical direction when the flatness of the roadbed is poor. The bottom of the support pad 122 is fixedly connected to the support hemispherical block 123, so that the support guide rod 12 is more suitable for flattening the roadbed with less support. In addition, a level 111 is fixedly installed on the top of the installation top plate 11. Specifically, the type of the level 111 is a liquid level, so that the inspection personnel can judge the horizontality of the installation top plate 11 and the verticality of the support guide rod 12 in real time.
[0039] Reference Figure 2 The top of the mounting top plate 11 is fixedly mounted with a drive motor 112, a reducer 113 and a protective cover 114. The output end of the drive motor 112 is coaxially fixedly connected to the input end of the reducer 113 to increase the torque of the drive motor 112. The drive motor 112 and the reducer 113 are both located in the area covered by the protective cover 114, so that the drive motor 112 and the reducer 113 are not easily damaged. A vent is provided on one side of the protective cover 114 to facilitate heat dissipation of the drive motor 112.
[0040] Reference Figure 2 and Figure 3 , there are four sampling electric cylinders 2, and the four sampling electric cylinders 2 are all located at the bottom of the mounting top plate 11, and the four sampling electric cylinders 2 are distributed in a rectangular shape. The cylinder body of the sampling electric cylinder 2 is fixedly mounted on the mounting top plate 11, and the output rod of the sampling electric cylinder 2 is arranged in the vertical direction. The output rod of the sampling electric cylinder 2 is fixedly mounted with a sliding plate 21, and the sliding plate 21 is arranged in a quasi-rectangular shape, and the sliding plate 21 is arranged in the horizontal direction. The sliding plate 21 is provided with four sliding holes 211, and the four sliding holes 211 are respectively arranged near the four corners of the sliding plate 21. The support guide rod 12 is slidably penetrated in the sliding hole 211, so that the sliding plate 21 can stably move in the vertical direction.
[0041] Reference Figure 2 The sampling member 3 is located at the bottom of the sliding plate 21. The sampling member 3 includes a transmission slide bar 31, a mounting sleeve 32, a buffer spring 33, a mounting ring body 34 and a sampling ring knife 35. The transmission slide bar 31 is rotatably matched with the sliding plate 21 through a bearing, and the transmission slide bar 31 is arranged in the vertical direction. A slide bar chamber 311 is provided inside the transmission slide bar 31, and the slide bar chamber 311 extends to the top of the transmission slide bar 31 in the vertical direction. Figure 4The output end of the reducer 113 is coaxially fixedly connected with a transmission connecting rod 115 through a coupling. The cross-section of the transmission connecting rod 115 is hexagonal, and the bottom end of the transmission connecting rod 115 slides in the vertical direction to fit in the slide rod chamber 311, so that when the sampling electric cylinder 2 drives the sliding plate 21 and the transmission sliding rod 31 to move in the vertical direction, the transmission sliding rod 31 is driven to rotate through the transmission connecting rod 115.
[0042] Reference Figure 4 and Figure 5 , the bottom cross-section of the transmission slide bar 31 is hexagonal. The installation sleeve 32 slides in the vertical direction and fits in the bottom of the transmission slide bar 31. The installation sleeve 32 is provided with a sleeve chamber 321 inside, and the sleeve chamber 321 extends in the vertical direction. The bottom end of the sleeve chamber 321 is provided with a positioning spherical surface 322, and the positioning spherical surface 322 is recessed in the vertical downward direction, and the positioning spherical surface 322 is coaxially arranged with the transmission slide bar 31. The bottom of the transmission slide bar 31 has a positioning ball block 312 arranged corresponding to the positioning spherical surface 322, so that after the positioning ball block 312 contacts the surface of the positioning spherical surface 322, the installation sleeve 32 slides along the positioning spherical surface 322 until it is coaxially arranged with the transmission slide bar 31, thereby ensuring that the installation sleeve 32 always moves in the vertical direction, reducing the occurrence of the deflection of the installation sleeve 32.
[0043] Reference Figure 5 The buffer spring 33 is sleeved on the transmission slide bar 31, and the buffer spring 33 is arranged in the vertical direction, and the top of the buffer spring 33 is fixedly mounted on the inner wall of the sleeve chamber 321. The bottom of the buffer spring 33 is fixedly mounted on the positioning ball block 312 of the transmission slide bar 31, so that the impact force of the transmission slide bar 31 on the mounting sleeve 32 is absorbed by the buffer spring 33.
[0044] Reference Figure 5 and Figure 6 The mounting ring body 34 is fixedly mounted on the bottom of the mounting sleeve 32, the sampling ring cutter 35 is threadedly matched with the bottom of the mounting ring body 34, and the mounting ring body 34 is sleeved on the sampling ring cutter 35. The bottom of the mounting ring body 34 is provided with a cutting edge 341, and the cutting edge 341 is inclined from top to bottom toward the direction close to the sampling ring cutter 35, so that the mounting ring body 34 can be quickly pressed into the roadbed along with the sampling ring cutter 35.
[0045] Reference Figure 5A soil sample cavity 301 is provided between the sampling ring cutter 35 and the mounting ring body 34. The soil sample cavity 301 is located at the top of the sampling ring cutter 35, so that when the sampling ring cutter 35 takes soil samples, the soil sample exceeds the top of the sampling ring cutter 35, thereby ensuring that the sampling ring cutter 35 is filled with soil samples. In addition, a limiting ring 323 is fixedly sleeved on the outer circumference of the mounting sleeve 32, and the bottom of the limiting ring 323 is flush with the top of the soil sample cavity 301, so that after the soil sample reaches the top of the soil sample cavity 301, the sampling ring cutter 35 is not easy to continue to move and compact the soil sample, thereby reducing the disturbance to the soil sample and ensuring that the soil sample truly reflects the roadbed condition.
[0046] The implementation principle of a highway roadbed compaction measuring device according to an embodiment of the present application is as follows: the sampling electric cylinder 2 drives the sliding plate 21 to move toward the roadbed, and as the sliding plate 21 approaches the roadbed, the movement speed of the sampling electric cylinder 2 gradually decreases. After the sampling ring cutter 35 approaches the roadbed, the driving motor 112 drives the transmission connecting rod 115, the transmission sliding rod 31 and the installation sleeve 32 to rotate through the reducer 113, so that the sampling ring cutter 35 is pressed into the roadbed while rotating. In the process of the sampling ring cutter 35 being pressed into the roadbed, the buffer spring 33 gradually deforms, absorbing the impact force of the transmission sliding rod 31 on the installation sleeve 32, thereby reducing the disturbance of the sampling ring cutter 35 on the soil sample and ensuring the measurement accuracy of the roadbed compaction.
[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A roadbed compaction measuring device, characterized in that: It comprises a frame (1), a sampling electric cylinder (2) and a sampling piece (3), wherein the sampling electric cylinder (2) is mounted on the frame (1), and the sampling electric cylinder (2) is arranged in a vertical direction; The sampling member (3) comprises a transmission slide bar (31), a mounting sleeve (32), a buffer spring (33) and a sampling ring knife (35); the transmission slide bar (31) is mounted on the sampling electric cylinder (2); the mounting sleeve (32) is slidably matched with the transmission slide bar (31) along the vertical direction; the two ends of the buffer spring (33) are respectively mounted on the transmission slide bar (31) and the mounting sleeve (32); and the sampling ring knife (35) is mounted on the mounting sleeve (32).
2. A roadbed compaction measuring device according to claim 1, characterized in that: A sleeve chamber (321) is provided inside the installation sleeve (32), and the sleeve chamber (321) extends in a vertical direction. A positioning spherical surface (322) is provided at one end of the sleeve chamber (321), and the positioning spherical surface (322) is coaxially arranged with the transmission slide rod (31). A positioning ball block (312) is provided at one end of the transmission slide rod (31) and is arranged corresponding to the positioning spherical surface (322).
3. A roadbed compaction measuring device according to claim 1, characterized in that: The sampling member (3) further comprises a mounting ring body (34), wherein the mounting ring body (34) is mounted on the mounting sleeve (32), and the sampling ring cutter (35) is threadedly matched with the mounting ring body (34).
4. A roadbed compaction measuring device according to claim 3, characterized in that: The mounting ring body (34) is sleeved on the sampling ring knife (35), and a cutting edge (341) is provided at the bottom of the mounting ring body (34).
5. A highway subgrade compaction measuring device according to claim 4, characterized in that: A soil sample cavity (301) is provided between the sampling ring cutter (35) and the mounting ring body (34), and the soil sample cavity (301) is located at the top of the sampling ring cutter (35).
6. A roadbed compaction measuring device according to claim 1, characterized in that: The frame (1) is equipped with a driving motor (112), and the driving motor (112) is used to drive the transmission slide bar (31) to rotate around a vertical axis.
7. A roadbed compaction measuring device according to claim 1, characterized in that: The frame (1) is provided with an adjusting screw (121), one end of which is threadedly engaged with the frame (1), and the other end of which is mounted with a supporting pad (122).
8. A roadbed compaction measuring device according to claim 7, characterized in that: The frame (1) is equipped with a level meter (111), and the level meter (111) is used to detect the verticality of the sampling ring knife (35).