A device for detecting the degree of compaction of a roadbed

Abstract

This utility model relates to the field of roadbed compaction testing technology and discloses a roadbed compaction testing device, including a base and a top component. The top component is provided on the top of the base, and the bottom of the top component is fixedly connected to the top of the base by an adapter bolt. The base and the top component form a hollow rectangular column structure. A horizontal adjustment base is provided at the four corners of the bottom of the base. The horizontal adjustment base is threadedly connected to the four corners of the bottom of the horizontal adjustment base to adjust the levelness of the base. A roadbed drilling assembly is also provided inside the top of the base. The roadbed drilling assembly is slidably connected to the inside of the base to drill holes in the road surface. This roadbed compaction testing device can perform precise horizontal adjustment to ensure that the holes drilled on the roadbed are vertical, thus ensuring the accuracy of subsequent roadbed compaction testing.

Description

Technical Field

[0001] This utility model relates to the field of roadbed compaction testing technology, specifically a roadbed compaction testing device. Background Technology

[0002] Subgrade compaction originally referred to the ratio of the dry density of compacted soil or other road construction materials to the standard maximum dry density, expressed as a percentage. Subgrade compaction is one of the key indicators for testing the construction quality of subgrade and pavement, characterizing the density status after on-site compaction. The higher the compaction degree, the greater the density, and the better the overall performance of the material. For subgrade, semi-rigid base course and granular flexible base course, compaction degree refers to the ratio of the actual dry density achieved on-site to the maximum dry density obtained from the standard compaction test. For asphalt surface course and asphalt stabilized base course, compaction degree refers to the ratio of the density achieved on-site to the standard density.

[0003] However, when current testing equipment drills into the roadbed, the roadbed surface is not flat enough, and the four support feet at the bottom of the equipment cannot be placed stably on the roadbed surface. This results in the drilling testing device not being horizontal, and the drill bit cannot maintain a perpendicular angle to the roadbed when it descends to drill, which causes slippage during the drilling process and forms tilted holes, thus affecting the accuracy of the roadbed compaction test. To address this, we propose a roadbed compaction testing device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a roadbed compaction testing device, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a roadbed compaction degree testing device, comprising:

[0006] The base and the top component are provided. The top component is provided on the top of the base. The bottom of the top component is fixedly connected to the top of the base by the adapter bolts. The base and the top component form a hollow rectangular column structure.

[0007] A horizontal adjustment base is provided at the four corners of the bottom of the base. The horizontal adjustment base is threadedly connected to the four corners of the bottom of the horizontal adjustment base to adjust the levelness of the base.

[0008] A roadbed drilling assembly is disposed inside the top of the base. The roadbed drilling assembly is slidably connected to the inside of the base and is used for drilling the road surface.

[0009] Preferably, the base has two connecting plates that are symmetrically distributed on the top, and a working hole is provided between the two connecting plates on the top of the base. Two sets of connecting holes that are symmetrically distributed on the two opposite sides of the working hole are provided. Threaded posts are provided at the four corners of the bottom of the base.

[0010] Preferably, the top of the connecting plate is provided with a protrusion, and the end face of the protrusion is provided with two connecting holes that are symmetrically distributed on the axis, and the two connecting plates are provided with guide grooves on opposite sides.

[0011] Preferably, the top component has an inverted U-shaped structure, and the bottom of the top component is provided with two axially symmetrically distributed protrusions 2. The end face of the protrusions 2 is provided with two axially symmetrically distributed connecting holes 4. The connecting holes 4 are connected to the connecting holes 2 by means of adapter bolts. The top of the top component is provided with four axially symmetrically distributed connecting holes 3. The connecting holes 3 are connected to the connecting holes 1 by means of adapter bolts. A level is provided at the center of the top of the top component.

[0012] Preferably, the top of the horizontal adjustment base is provided with a mating column, and the mating column has an internal threaded hole, which is threadedly connected to the threaded column. The side wall of the mating column is provided with a set of rotating adjustment blocks arranged in a ring array. The bottom of the mating column is provided with a mating plate, and the bottom of the mating plate is provided with serrated anti-slip protrusions.

[0013] Preferably, the roadbed drilling assembly includes a hydraulic rod and a motor, with the hydraulic rod welded to the center of the top of the top component, and the bottom output push rod shaft of the hydraulic rod welded to the center of the top of the motor.

[0014] Preferably, the motor has two sliders that are symmetrically distributed on two opposite sidewalls on its exterior. The sliders are slidably connected to the guide grooves, and the output shaft at the bottom of the motor is a drill bit that passes vertically through the working hole.

[0015] Compared with the prior art, this utility model provides a roadbed compaction degree testing device, which has the following beneficial effects:

[0016] This roadbed compaction testing device, through the cooperation of a horizontal adjustment base and a level, effectively solves the problem of drilling tilt caused by uneven roadbed surfaces in traditional equipment. The level monitors the device's levelness in real time, and operators can flexibly adjust the height of the four corners of the base by rotating the adjustment blocks to ensure the device is level. At the same time, the serrated anti-slip protrusions enhance the friction between the device and the roadbed surface, and the retaining spring prevents vibration from affecting the adjustment effect, ensuring stability during the drilling process. In addition, the design of the guide groove and slider further ensures that the motor drives the drill bit to move vertically downward, avoiding drilling deviation. These designs significantly improve the verticality of the drilling and the testing accuracy, reduce the testing error caused by drilling tilt, and improve the accuracy and reliability of roadbed compaction testing, providing more accurate data support for road construction quality assessment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the roadbed compaction testing device of this utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of the roadbed compaction testing device of this utility model;

[0019] Figure 3 This is a schematic diagram of the base of this utility model;

[0020] Figure 4 This is a schematic diagram of the top component of this utility model;

[0021] Figure 5 This is a schematic diagram of the horizontal adjustment base of this utility model;

[0022] Figure 6 This is a schematic diagram of the motor of this utility model.

[0023] In the diagram: 1. Base; 2. Top component; 3. Hydraulic rod; 4. Motor; 5. Horizontal adjustment base; 6. Snap ring; 7. Connecting plate; 8. Guide groove; 9. Protrusion 1; 10. Connecting hole 1; 11. Working hole; 12. Threaded post; 13. Connecting hole 2; 14. Connecting hole 3; 15. Protrusion 2; 16. Connecting hole 4; 17. Mating post; 18. Internal threaded hole; 19. Rotary adjustment block; 20. Mating plate; 21. Serrated anti-slip protrusion; 22. Sliding block; 23. Drill bit; 24. Level. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-6 A roadbed compaction testing device, comprising:

[0026] The base 1 and the top component 2 are provided on the top of the base 1. The bottom of the top component 2 is fixedly connected to the top of the base 1 by the adapter bolts, and the base 1 and the top component 2 form a hollow rectangular column structure.

[0027] A horizontal adjustment base 5 is set at the four corners of the bottom of the base 1. The horizontal adjustment base 5 is threadedly connected to the four corners of the bottom of the horizontal adjustment base 1 to adjust the levelness of the base 1.

[0028] The roadbed drilling assembly is located inside the top of the base 1. The roadbed drilling assembly is slidably connected to the inside of the base 1 and is used to drill holes in the road surface.

[0029] Furthermore, the base 1 has two connecting plates 7 arranged symmetrically on the top, and a working hole 11 is opened between the two connecting plates 7 on the top of the base 1. Two sets of connecting holes 13 arranged symmetrically on the two opposite sides of the working hole 11 are provided. Threaded posts 12 are provided at the four corners of the bottom of the base 1.

[0030] Furthermore, the top of the connecting plate 7 is provided with a protrusion 9, and the end face of the protrusion 9 is provided with two connecting holes 10 distributed symmetrically on the axis. The two connecting plates 7 are provided with guide grooves 8 on opposite sides.

[0031] Furthermore, the top component 2 has an inverted U-shaped structure, and the bottom of the top component 2 is provided with two axially symmetrically distributed protrusions 15. The end face of the protrusions 15 is provided with two axially symmetrically distributed connecting holes 16. The connecting holes 16 are connected to the connecting holes 13 by means of adapter bolts. The top of the top component 2 is provided with four axially symmetrically distributed connecting holes 14. The connecting holes 14 are connected to the connecting holes 10 by means of adapter bolts. A level 24 is provided at the center of the top of the top component 2. The top component 2 plays a role in fixing the hydraulic rod 3, ensuring that the hydraulic rod 3 push rod can accurately push the motor 4. The level 24 can detect the levelness of the entire device in real time to ensure the verticality of the drilling.

[0032] Furthermore, the top of the horizontal adjustment base 5 is provided with a mating column 17, and the mating column 17 has an internal threaded hole 18. The internal threaded hole 18 is threadedly connected to the threaded column 12. The side wall of the mating column 17 is provided with a set of rotating adjustment blocks 19 arranged in a ring array. The bottom of the mating column 17 is provided with a mating plate 20, and the bottom of the mating plate 20 is provided with a serrated anti-slip protrusion 21. The horizontal adjustment base 5 is provided with a retaining spring 6 at the mating port of the threaded column 12 and the internal threaded hole 18 corresponding to the position of the connection base 1. The retaining spring 6 can ensure that the vibration that occurs during the drilling project will not affect the normal operation of the horizontal adjustment base 5, and play a preventive and protective role. The height of the roadbed compaction detection device can be adjusted or fine-tuned by rotating the adjustment block 19, so that it can easily cope with uneven road surfaces and improve the accuracy of the detection. The serrated anti-slip protrusion 21 can increase the contact friction and ensure that it will not deviate during the drilling process.

[0033] Furthermore, the roadbed drilling assembly includes a hydraulic rod 3 and a motor 4. The hydraulic rod 3 is welded to the center of the top of the top component 2, and the bottom output push rod shaft of the hydraulic rod 3 is welded to the center of the top of the motor 4. The output push rod of the hydraulic rod 3 pushes the motor 4 to move vertically downward to complete the drilling work.

[0034] Furthermore, the motor 4 has two sliders 22 arranged symmetrically on its two opposite sidewalls. The sliders 22 are slidably connected to the guide groove 8. The output shaft at the bottom of the motor 4 is a drill bit 23, which passes vertically through the working hole 11. The sliding connection between the guide groove 8 and the sliders 22 can ensure the accuracy of the motor 4 in the vertical direction, improve the vertical accuracy of the drill bit 23, and ensure the accuracy of subsequent roadbed compaction testing.

[0035] Structural Description:

[0036] Base 1: Base 1 is the basic support structure of the roadbed compaction testing device. The top is fixedly connected to the top component 2 to form a hollow rectangular column. The bottom is provided with a threaded column 12 to connect to the horizontal adjustment base 5. The top has a working hole 11 for drilling assembly to operate.

[0037] Top component 2: Top component 2 is inverted U-shaped and is connected and fixed to base 1 by protrusion 2 15. A level 24 is installed on the top to monitor the levelness, and a hydraulic rod 3 is fixed inside to ensure that it accurately drives the motor 4 to complete the drilling.

[0038] Hydraulic rod 3: Hydraulic rod 3 is welded to the center of the top of the top part 2. The output push rod is connected to the top of the motor 4. Through telescopic movement, it pushes the motor 4 to move vertically downward to provide power for roadbed drilling.

[0039] Motor 4: Motor 4 is driven by hydraulic rod 3. The external slider 22 cooperates with guide groove 8 to ensure vertical movement. The bottom output shaft is connected to drill bit 23, and drilling work on the roadbed is achieved through high-speed rotation.

[0040] Horizontal adjustment base 5: The horizontal adjustment base 5 is installed at the four corners of the bottom of the base 1. It is engaged with the threaded post 12 through the internal threaded hole 18. The height and level of the device can be adjusted by rotating the adjustment block 19 to adapt to uneven roadbeds.

[0041] Snap ring 6: Snap ring 6 is installed at the mating port of threaded post 12 and internal threaded hole 18 to prevent drilling vibration from affecting the operation of horizontal adjustment base 5 and to ensure the stability and reliability of the device after adjustment.

[0042] Connecting plate 7: The connecting plate 7 is symmetrically arranged on the top of the base 1. The top is provided with a protrusion 9 to connect with the top component 2. The opposite side has a guide groove 8 to provide a sliding track for the slider 22 of the motor 4 and guide its vertical movement.

[0043] Guide groove 8: The guide groove 8 is located on the opposite side of the connecting plate 7 and slides in cooperation with the external slider 22 of the motor 4 to ensure the accuracy of the vertical movement of the motor 4 and improve the drilling accuracy of the drill bit 23.

[0044] Protrusion 19: Protrusion 19 is located on the top of the connecting plate 7, and has a connecting hole 10 on its end face. It is connected to the top component 2 by means of an adapter bolt and the connecting hole 314, so as to achieve a stable connection between the connecting plate 7 and the top component 2.

[0045] Connection hole 10: Connection holes 10 are symmetrically distributed on the end face of protrusion 9 and are used to connect with connection hole 3 14 of top component 2 through adapter bolts to ensure the integrity and stability of the device structure.

[0046] Working hole 11: The working hole 11 is opened between the two connecting plates 7 at the top of the base 1. The drill bit 23 at the bottom of the power supply motor 4 passes through vertically and is the key channel for realizing the roadbed drilling operation.

[0047] Threaded post 12: The threaded post 12 is located at the four corners of the bottom of the base 1 and is threadedly engaged with the internal threaded hole 18 of the horizontal adjustment base 5. It works with the rotating adjustment block 19 to adjust the horizontality and height of the device.

[0048] Connection hole 2 13: Connection hole 2 13 is symmetrically distributed on both sides of working hole 11, and is connected to connection hole 4 16 of top component 2 by adapter bolts to enhance the connection strength between base 1 and top component 2;

[0049] Connection hole 3 14: Connection hole 3 14 is symmetrically distributed on the top of the top component 2 and is connected to connection hole 10 of protrusion 9 of connection plate 7 by adapter bolts to ensure the stability of the upper structure of the device.

[0050] Protrusion 2 15: Protrusion 2 15 is symmetrically distributed at the bottom of the top component 2, and the end face is provided with connection hole 4 16. It is fixed to the connection hole 2 13 of the base 1 by the adapter bolt to secure the installation of the top component 2.

[0051] Connection hole 4 16: Connection hole 4 16 is symmetrically distributed on the end face of protrusion 2 15, and cooperates with connection hole 2 13 of base 1 to ensure that top component 2 is tightly connected to base 1 and stabilize the overall structure;

[0052] Matching column 17: The matching column 17 is located at the top of the horizontal adjustment base 5. It has an internal threaded hole 18 that matches the threaded column 12. The side wall is provided with a rotating adjustment block 19 to realize the adjustment of the height and level of the device.

[0053] Internal threaded hole 18: The internal threaded hole 18 is located inside the mating column 17 and is threadedly engaged with the threaded column 12 of the base 1. Under the action of the rotating adjustment block 19, the height and horizontal state of the device can be adjusted.

[0054] Rotary adjusting block 19: The rotary adjusting block 19 is arranged in a ring array on the side wall of the mating column 17. By rotating, the mating column 17 is driven to rotate in and out on the threaded column 12, thereby adjusting the level and height of the device.

[0055] Matching plate 20: The matching plate 20 is located at the bottom of the horizontal adjustment base 5, bearing the weight of the device and contacting the roadbed surface. The bottom serrated anti-slip protrusions 21 increase the friction and prevent the device from shifting when drilling.

[0056] Serrated anti-slip protrusion 21: The serrated anti-slip protrusion 21 is located at the bottom of the mating plate 20 to increase the friction with the roadbed surface, prevent the device from sliding during drilling, and ensure the stable progress of the inspection work;

[0057] Slider 22: Slider 22 is symmetrically installed on both sides of the outside of motor 4 and slides in cooperation with the guide groove 8 of connecting plate 7 to ensure the vertical movement of motor 4 and ensure the accuracy of drilling direction of drill bit 23;

[0058] Drill bit 23: Drill bit 23 is connected to the bottom output shaft of motor 4 and passes vertically through working hole 11 to drill the roadbed. Its verticality and stability affect the accuracy of compaction test.

[0059] Level 24: The level 24 is installed at the top center of the top component 2 to monitor the horizontal status of the device in real time, providing data reference for the operator to adjust the level adjustment base 5 and ensuring the verticality of the drill hole.

[0060] Working principle: Install the roadbed compaction testing device correctly according to the diagram. Connect the bottom of the base 1 to the horizontal adjustment base 5 through four threaded posts 12, temporarily ignoring the height of the temporary assembly of the base 1 and the horizontal adjustment base 5. Place the motor 4 between the two connecting plates 7 of the base 1 through the guide groove 8 and the corresponding sliding engagement of the slider 22. The end of the motor 4 corresponding to the horizontal adjustment base 5 is the drill bit 23, which passes through the working hole 11 of the base 1. Weld the push rod of the hydraulic rod 3 to the end of the motor 4 away from the drill bit 23. Select the appropriate top component 2. The bolts are fixedly connected through four connecting holes 10 and 14, and four connecting holes 23 and 16. The contact surface of the hydraulic rod 3 and the top component 2 is welded. Finally, the specific horizontal position is adjusted by rotating the rotating adjustment block 19 of the horizontal adjustment base 5 in conjunction with the level 24 to prevent the drilling from deviating and affecting the subsequent roadbed compaction test. The hydraulic rod 3 and the motor 4 are started. The push rod of the hydraulic rod 3 pushes the motor 4 to move vertically downward. The drill bit 23 of the motor 4 drills a round hole in the roadbed and then performs an accurate roadbed compaction test.

[0061] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the degree of compaction of a roadbed, characterized in that, include: The base (1) and the top component (2) are provided on the top of the base (1). The bottom of the top component (2) is fixedly connected to the top of the base (1) by an adapter bolt. The base (1) and the top component (2) form a hollow rectangular column structure. A horizontal adjustment base (5) is provided at the four corners of the bottom of the base (1). The horizontal adjustment base (5) is threadedly connected to the four corners of the bottom of the horizontal adjustment base (5) to adjust the levelness of the base (1). The roadbed drilling assembly is located inside the top of the base (1). The roadbed drilling assembly is slidably connected to the inside of the base (1) and is used to drill holes in the road surface.

2. The roadbed compactness detection device according to claim 1, wherein The base (1) has two connecting plates (7) arranged in an axisymmetric manner at the top, and a working hole (11) is opened between the two connecting plates (7) at the top of the base (1). Two sets of connecting holes (13) are arranged in an axisymmetric manner on the two opposite sides of the working hole (11). Threaded columns (12) are provided at the four corners of the bottom of the base (1).

3. The subgrade compactness detection device according to claim 2, characterized in that, The top of the connecting plate (7) is provided with a protrusion (9), and the end face of the protrusion (9) is provided with two connecting holes (10) that are symmetrically distributed. The two connecting plates (7) are provided with guide grooves (8) on opposite sides.

4. The subgrade compactness detection device according to claim 1, characterized in that, The top component (2) has an inverted U-shaped structure. The bottom of the top component (2) is provided with two axially symmetrical protrusions (15). The end face of the protrusions (15) is provided with two axially symmetrical connecting holes (16). The connecting holes (16) are connected to the connecting holes (13) by means of adapter bolts. The top of the top component (2) is provided with four axially symmetrical connecting holes (14). The connecting holes (14) are connected to the connecting holes (10) by means of adapter bolts. The top center of the top of the top component (2) is provided with a level (24).

5. The subgrade compactness detection device according to claim 1, characterized in that, The horizontal adjustment base (5) is provided with a mating column (17) at the top, and the mating column (17) is provided with an internal threaded hole (18). The internal threaded hole (18) is connected to the threaded column (12) in a threaded engagement. The mating column (17) is provided with a set of rotating adjustment blocks (19) arranged in a ring array on the side wall. The mating column (17) is provided with a mating plate (20) at the bottom, and the mating plate (20) is provided with a serrated anti-slip protrusion (21) at the bottom.

6. The subgrade compactness detection device according to claim 1, characterized in that, The roadbed drilling assembly includes a hydraulic rod (3) and a motor (4). The hydraulic rod (3) is welded to the center of the top of the top component (2), and the bottom output push rod shaft of the hydraulic rod (3) is welded to the center of the top of the motor (4).

7. The subgrade compactness detection device according to claim 6, characterized in that, The motor (4) has two sliders (22) on its two opposite sidewalls that are symmetrically distributed. The sliders (22) are slidably connected to the guide groove (8). The bottom output shaft of the motor (4) is a drill bit (23), which passes vertically through the working hole (11).

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