A device for testing the performance of a roadbed

Abstract

The utility model relates to the technical field of roadbed performance test, concretely is a kind of roadbed performance testing device, the utility model includes mounting bracket and power sounding mechanism;The limiting mechanism of sliding installation power sounding mechanism is fixedly arranged on mounting bracket;The limiting mechanism includes mounting ring and limit ring, and the limit ring is located in mounting ring, and the sliding connection between limit ring and power sounding mechanism, and the secondary leveling assembly is arranged between limit ring and mounting ring, and there is primary leveling assembly between limit ring and mounting bracket;The utility model's limiting mechanism is set to mounting ring, limit ring, primary and secondary leveling assembly, realizes the space bidirectional accurate leveling of power sounding mechanism, ensures that drill rod is absolutely vertical, improves the reliability of test data.

Description

Technical Field

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

[0002] As the basic structure of road engineering, the compaction degree, bearing capacity and uniformity of the roadbed directly affect the service life of the pavement and driving safety.

[0003] Dynamic penetration testing is a key in-situ testing method for evaluating subgrade performance. It involves penetrating the subgrade with a heavy hammer by free fall and determining the soil's mechanical properties based on the penetration resistance.

[0004] Traditional equipment relies on manual straightening of the drill rod, which is prone to tilting during operation, leading to distorted test data; moreover, the manual fixing device is easily affected by uneven ground or impact vibration, requiring repeated adjustments. Utility Model Content

[0005] The purpose of this invention is to provide a roadbed performance testing device to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A roadbed performance testing device includes a mounting frame and a dynamic cone penetration test mechanism; a limiting mechanism for slidingly mounting the dynamic cone penetration test mechanism is fixedly provided on the mounting frame;

[0008] The limiting mechanism includes an installation ring and a limiting ring. The limiting ring is located in the installation ring and is slidably connected to the power probe mechanism. A secondary leveling component is provided between the limiting ring and the installation ring, and a primary leveling component is provided between the limiting ring and the mounting frame.

[0009] Furthermore, the mounting bracket includes two parallel mounting strips, with a connecting plate fixedly connected between both ends of the two mounting strips; a support foot is fixedly connected to both ends of the bottom surface of each mounting strip, and a contact pad is fixedly installed at the bottom end of each support foot, with a positioning cone fixedly installed on the bottom surface of the contact pad.

[0010] Furthermore, the primary leveling component includes a spirit level and two fixed seats that are respectively fixedly installed at the middle position of the top surface of the two mounting strips. The mounting ring is disposed between the two fixed seats. A rotating shaft is rotatably connected to the side of the fixed seat near the mounting ring. The end of the rotating shaft near the mounting ring is fixedly connected to the periphery of the mounting ring.

[0011] A worm gear is fixedly installed after the end of the rotating shaft away from the mounting ring rotates through the corresponding fixed seat; two mounting seats are fixedly connected to the fixed seat near the worm gear, and a worm gear is rotatably installed between the two mounting seats, meshing with the worm gear. A knob is fixedly installed after the end of the worm gear rotates through the corresponding mounting seat.

[0012] The level ruler is fixedly installed on the top surface of the mounting ring, and is perpendicular to the axis of the rotating shaft.

[0013] Furthermore, the secondary leveling assembly includes a second mounting base, a second level, and two rotating shafts fixedly mounted on the periphery of the limiting ring. The second rotating shaft is perpendicular to the first rotating shaft. The end of the second rotating shaft away from the limiting ring is rotatably connected to the inner wall of the mounting ring. The end of one rotating shaft away from the limiting ring rotates through the mounting ring and is fixedly mounted with a worm gear.

[0014] Two mounting seats are fixedly connected to the periphery of the mounting ring near the worm gear. A worm gear is rotatably mounted between the two mounting seats and meshes with the worm gear. One end of the worm gear passes through the mounting seat at the corresponding position and is fixedly mounted with a knob.

[0015] The second horizontal ruler is fixedly installed on the top surface of the limiting ring, and the second horizontal ruler is set perpendicularly to the first horizontal ruler.

[0016] Furthermore, the power penetration mechanism includes a drill rod that is slidably connected through the limiting ring. A drill bit is fixedly installed at the bottom end of the drill rod, a limiting plate is fixedly installed at the top end of the drill rod, a guide rod is fixedly installed at the top end of the limiting plate, an impact block is slidably installed around the guide rod, and a handle is fixedly installed around the impact block.

[0017] A retaining ring is fixedly installed on the periphery of the guide rod near the top.

[0018] The beneficial effects of this utility model are:

[0019] 1. The limiting mechanism of this utility model achieves precise bidirectional leveling of the power penetration mechanism in space through the setting of the mounting ring, the limiting ring, and the first and second leveling components, ensuring that the drill rod is absolutely vertical and improving the reliability of the test data.

[0020] 2. The leveling assembly utilizes the self-locking characteristics of the worm gear mechanism, enabling it to resist impact vibrations after leveling and preventing tilting during operation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0023] Figure 2 yes Figure 1 Enlarged view of section A;

[0024] Figure 3 yes Figure 1 Enlarged view of section B;

[0025] The reference numerals in the attached figures are as follows:

[0026] 1-Mounting strip, 2-Connecting plate, 3-Support foot, 4-Contact pad, 5-Positioning cone, 6-Fixed seat, 7-Shaft one, 8-Mounting ring, 9-Limiting ring, 10-Level two, 11-Shaft two, 12-Drill rod, 13-Drill bit, 14-Guide rod, 15-Impact block, 16-Handle, 17-Limiting plate, 18-Worm gear two, 19-Worm two, 20-Mounting seat two, 21-Knob two, 22-Level one, 23-Worm gear one, 24-Worm one, 25-Mounting seat one, 26-Knob one. Detailed Implementation

[0027] 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.

[0028] Example 1: Please refer to Figures 1-3 In this embodiment of the utility model, a roadbed performance testing device includes a mounting frame and a dynamic cone penetration testing mechanism; a limiting mechanism for slidingly mounting the dynamic cone penetration testing mechanism is fixedly provided on the mounting frame;

[0029] The limiting mechanism includes an installation ring 8 and a limiting ring 9. The limiting ring 9 is located in the installation ring 8 and is slidably connected to the power probe mechanism. A secondary leveling component is provided between the limiting ring 9 and the installation ring 8, and a primary leveling component is provided between the limiting ring 9 and the mounting frame.

[0030] The mounting bracket includes two parallel mounting strips 1, with a connecting plate 2 fixedly connected between the two ends of the two mounting strips 1; support legs 3 are fixedly connected to both ends of the bottom surface of the mounting strips 1, and contact pads 4 are fixedly installed at the bottom of the support legs 3, with positioning cones 5 fixedly installed on the bottom surface of the contact pads 4.

[0031] The first-level leveling component includes a level ruler 22 and two fixed seats 6 that are respectively fixedly installed at the middle position of the top surface of the two mounting strips 1. The mounting ring 8 is set between the two fixed seats 6. The side of the fixed seat 6 near the mounting ring 8 is rotatably connected to the rotating shaft 7. The end of the rotating shaft 7 near the mounting ring 8 is fixedly connected to the periphery of the mounting ring 8.

[0032] A worm gear 23 is fixedly installed after the end of a rotating shaft 7 away from the mounting ring 8 rotates through the corresponding fixed seat 6; two mounting seats 25 are fixedly connected to the fixed seat 6 near the worm gear 23, and a worm 24 that meshes with the worm gear 23 is rotatably installed between the two mounting seats 25; a knob 26 is fixedly installed after the end of the worm 24 rotates through the corresponding mounting seat 25.

[0033] The level 22 is fixedly installed on the top surface of the mounting ring 8, and the level 22 is perpendicular to the axis of the rotating shaft 7.

[0034] The secondary leveling component includes a mounting base 20, a level 10, and two rotating shafts 11 fixedly installed around the limiting ring 9. The rotating shafts 11 are perpendicular to the rotating shaft 7. The end of the rotating shaft 11 away from the limiting ring 9 is rotatably connected to the inner wall of the mounting ring 8. The end of the rotating shaft 11 away from the limiting ring 9 rotates through the mounting ring 8 and is fixedly installed with a worm gear 18.

[0035] Two mounting seats 20 are fixedly connected to the outer periphery of the mounting ring 8 near the worm gear 2 18. A worm 2 19 that meshes with the worm gear 2 18 is rotatably mounted between the two mounting seats 2 20. A knob 2 21 is fixedly mounted after one end of the worm 2 19 rotates through the corresponding mounting seat 20.

[0036] The second horizontal ruler 10 is fixedly installed on the top surface of the limiting ring 9, and the second horizontal ruler 10 is set vertically between the first horizontal ruler 22.

[0037] When using this utility model:

[0038] The main body of the device is positioned and installed using four positioning cones 5 in the mounting bracket to maintain stability;

[0039] Next, the verticality of the power penetration mechanism is adjusted using the primary and secondary leveling components. Specifically:

[0040] In the first-level leveling assembly, the worm gear 24 is rotated by the knob 26. The worm gear 24 drives the rotating shaft 7 to rotate through the worm wheel 23, thereby making the mounting ring 8 rotate and adjust around the rotating shaft 7 as the axis. During the process, observe the level 22. When the bubble in the level 22 is in the middle position, it is ready.

[0041] In the secondary adjustment assembly, the worm gear 19 is rotated by the knob 21. The worm gear 19 drives the rotating shaft 11 to rotate through the worm wheel 18, so that 9 rotates and adjusts around the rotating shaft 11 as the axis. During the process, observe the level 10. When the bubble in the level 10 is in the middle position, it is ready.

[0042] When both horizontal ruler 210 and horizontal ruler 122 are in a horizontal state, the power penetration mechanism is in a state perpendicular to the horizontal plane.

[0043] Therefore, the limiting mechanism of this utility model, through the installation ring 8, the limiting ring 9, and the primary and secondary leveling components, achieves precise bidirectional leveling of the power penetration mechanism in space, ensuring the drill rod is absolutely vertical and improving the reliability of test data.

[0044] Among them, the self-locking characteristic of the worm gear mechanism is utilized to resist impact vibration after leveling, thus preventing deviation during operation.

[0045] Example 2: Please refer to Figure 1 Based on Embodiment 1, the power penetration mechanism includes a drill rod 12 that is slidably connected to the limiting ring 9. A drill bit 13 is fixedly installed at the bottom end of the drill rod 12, a limiting plate 17 is fixedly installed at the top end of the drill rod 12, a guide rod 14 is fixedly installed at the top end of the limiting plate 17, an impact block 15 is slidably installed around the guide rod 14, and a handle 16 is fixedly installed around the impact block 15.

[0046] A retaining ring is fixedly installed on the periphery of the guide rod 14 near the top.

[0047] In the dynamic penetration test mechanism, the user lifts the impact block 15 using the handle 16. When the impact block 15 is released from the upper limiting ring structure, the impact block 15 falls and is clamped to the limiting plate 17, causing the drill bit 13 to drill into the ground. Dynamic penetration testing is one of the most commonly used and important in-situ testing methods in roadbed engineering and is an existing technology.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A device for testing the performance of a subgrade comprising a mounting frame and a powered penetrometer mechanism; characterised in that, A limiting mechanism for slidingly mounting the power penetration mechanism is fixedly provided on the mounting frame; The limiting mechanism includes an installation ring (8) and a limiting ring (9). The limiting ring (9) is located in the installation ring (8). The limiting ring (9) is slidably connected to the power probe mechanism. A secondary leveling component is provided between the limiting ring (9) and the installation ring (8). A primary leveling component is provided between the limiting ring (9) and the mounting frame.

2. The roadbed performance testing device according to claim 1, characterized in that, The mounting frame includes two parallel mounting strips (1), and a connecting plate (2) is fixedly connected between the two ends of the two mounting strips (1); a support foot (3) is fixedly connected to both ends of the bottom surface of the mounting strip (1), and a contact pad (4) is fixedly installed at the bottom end of the support foot (3), and a positioning cone (5) is fixedly installed on the bottom surface of the contact pad (4).

3. The roadbed performance testing device according to claim 2, characterized in that, The first-level leveling component includes a level ruler (22) and two fixed seats (6) respectively fixedly installed at the middle position of the top surface of two mounting strips (1). The mounting ring (8) is set between the two fixed seats (6). A rotating shaft (7) is rotatably connected to the side of the fixed seat (6) near the mounting ring (8). The end of the rotating shaft (7) near the mounting ring (8) is fixedly connected to the periphery of the mounting ring (8). One of the rotating shafts (7) is rotated through a fixed seat (6) at a corresponding position and then fixedly mounted with a worm gear (23); two mounting seats (25) are fixedly connected to the fixed seat (6) near the worm gear (23), and a worm gear (24) that meshes with the worm gear (23) is rotatably mounted between the two mounting seats (25). One end of the worm gear (24) rotates through a mounting seat (25) at a corresponding position and then fixedly mounted with a knob (26); The horizontal ruler (22) is fixedly installed on the top surface of the mounting ring (8), and the horizontal ruler (22) is perpendicular to the axis of the rotating shaft (7).

4. The roadbed performance testing device according to claim 3, characterized in that, The secondary leveling assembly includes a second mounting base (20), a second level (10), and two rotating shafts (11) fixedly installed around the periphery of the limiting ring (9). The rotating shafts (11) are perpendicular to the first rotating shaft (7). The end of the rotating shaft (11) away from the limiting ring (9) is rotatably connected to the inner wall of the mounting ring (8). The end of the rotating shaft (11) away from the limiting ring (9) rotates through the mounting ring (8) and is fixedly installed with a worm gear (18). Two mounting seats (20) are fixedly connected to the periphery of the mounting ring (8) near the worm gear (18). A worm gear (19) that meshes with the worm gear (18) is rotatably mounted between the two mounting seats (20). A knob (21) is fixedly mounted after one end of the worm gear (19) rotates through the mounting seat (20) at the corresponding position. The second horizontal ruler (10) is fixedly installed on the top surface of the limiting ring (9), and the second horizontal ruler (10) is set vertically between the first horizontal ruler (22).

5. The roadbed performance testing device according to claim 1, characterized in that, The power penetration mechanism includes a drill rod (12) that is slidably connected to the limiting ring (9). A drill bit (13) is fixedly installed at the bottom end of the drill rod (12). A limiting plate (17) is fixedly installed at the top end of the drill rod (12). A guide rod (14) is fixedly installed at the top end of the limiting plate (17). An impact block (15) is slidably installed around the guide rod (14). A handle (16) is fixedly installed around the impact block (15). A retaining ring is fixedly installed on the periphery of the guide rod (14) near the top.

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