A road hardness detection structure

Abstract

The utility model discloses a road hardness detection structure, including the bottom plate, the bottom plate is firmly connected with two riser, the riser slidingly connected with the sliding plate, two the sliding plate between rotationally connected with the rotating link, the rotating link rotationally connected with the rotating frame, the middle part of rotating frame is provided with the through -hole, the through -hole of rotating frame rotationally connected with two rotating shafts, and the fixedly connected with the guide sleeve between two rotating shafts, the lower part of guide sleeve is fixedly connected with the counterweight, the guide sleeve slidingly connected with the detection rod, the outside of detection rod is provided with the scale line, the top of detection rod is fixedly connected with the weight block. Through the height -adjustable sliding plate cooperation plug -in rod positioning, and the guide sleeve automatic vertical calibration technology of counterweight drive, ensure that the detection rod always strictly perpendicular to the horizontal plane. This fundamentally solved the problem of the device inclination caused by uneven road, the detection rod impact angle deviation, and greatly improved the accuracy of hardness detection data.

Description

Technical Field

[0001] This utility model relates to the field of road inspection technology, and more specifically, to a road hardness testing structure. Background Technology

[0002] The core of road inspection is to test and inspect the soil, water, rock, and cement of the road. After the road surface concrete is poured and hardened, a hardness testing device is generally used to evaluate whether it meets the usage requirements.

[0003] Existing road hardness testing structures still have the following problems when in use: 1. In actual testing, existing devices often tilt due to uneven surfaces on the road surface, causing the base to lose its horizontal position. This tilt directly affects the verticality of the testing rod, leading to a deviation in the impact testing benchmark and ultimately causing the measurement results to deviate from the true value, thus affecting the testing accuracy.

[0004] 2. When the device tilts due to uneven road surface, its detection rod cannot maintain a vertical position during its free fall and impact with the ground. This results in only part of the rod's weight effectively acting vertically on the ground, and a significant portion of the impact energy is dissipated during the tilted collision, causing the final measured hardness value to be significantly lower than the actual road surface hardness value.

[0005] 3. Currently common road surface hardness testing devices often have inconvenient or inflexible adjustment mechanisms for key components. Operators frequently need to spend a lot of time repeatedly adjusting and repositioning when testing different points or adapting to different testing needs, significantly reducing the overall efficiency of the testing work.

[0006] In view of this, we propose a road hardness testing structure. Utility Model Content

[0007] In view of the problems existing in the prior art, this utility model provides a road hardness detection structure to solve the technical problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a road hardness testing structure, comprising a base plate, two upright plates fixedly connected to the base plate, a sliding plate slidably connected to the upright plates, a rotating rod rotatably connected between the two sliding plates, a rotating frame rotatably connected to the rotating rod, a through hole provided in the middle of the rotating frame, two rotating shafts rotatably connected within the through hole of the rotating frame, a guide sleeve fixedly connected between the two rotating shafts, a counterweight fixedly connected to the lower part of the guide sleeve, a testing rod slidably connected within the guide sleeve, a scale line provided on the outer side of the testing rod, a weighting block fixedly connected to the top of the testing rod, a limit structure provided on the sliding plate, and a compression structure provided on the rotating frame.

[0009] The present invention is further configured such that both the upright plate and the sliding plate are provided with limiting holes, and insert rods are inserted into the limiting holes of the upright plate and the sliding plate.

[0010] The present invention is further configured such that the limiting structure includes a friction block, the friction block is fixedly connected to one end of the rotating rod, the sliding plate is fixedly connected to a support plate, and the support plate is fixedly connected to a fixed seat.

[0011] The present invention is further configured such that a sliding rod is slidably connected to the fixed base, a friction block is fixedly connected to the sliding rod, and the friction block abuts against the friction block.

[0012] The present invention is further configured such that the fixed base is hinged to a rotating handle, and a hinge member is hinged between the rotating handle and the sliding rod.

[0013] The present invention is further configured such that the extrusion structure includes two friction blocks three, the two friction blocks three are respectively fixed to the rotating shaft, the rotating frame is fixed to two support plates two, and the support plates two are fixed to a fixed seat two.

[0014] The present invention is further configured such that the fixed base two is slidably connected to the sliding rod two, the sliding rod two is fixedly connected to the friction block four, and the friction block four abuts against the friction block three.

[0015] The present invention is further configured such that the fixed base two is hinged to a rotating handle two, and a hinge member two is hinged between the rotating handle two and the sliding rod two, so that the weight of the front and rear sides of the rotating frame is in a balanced state.

[0016] Compared with the prior art, this utility model provides a road hardness testing structure, which has the following beneficial effects: 1. This invention utilizes an adjustable-height sliding plate with a positioning rod, and a guide sleeve driven by a counterweight for automatic vertical calibration, ensuring that the testing rod is always strictly perpendicular to the horizontal plane. This fundamentally solves the problem of device tilting and testing rod impact angle deviation caused by uneven road surfaces, significantly improving the accuracy of hardness testing data.

[0017] 2. This invention utilizes a counterweight and a precise vertical calibration mechanism to ensure that the testing rod remains absolutely vertical when it falls freely and impacts the road surface. This avoids lateral energy dissipation caused by rod tilting, ensuring that the entire weight and impact kinetic energy of the testing rod are effectively applied to the measured point, thereby obtaining an impact value that truly reflects the road surface hardness.

[0018] 3. The innovative friction block limiting structure and convenient operating handle of this utility model make key steps such as height adjustment, rotation frame angle fixing, and guide sleeve vertical locking simple and reliable. This significantly reduces the time spent on repeated adjustments and tightening, and greatly improves the efficiency of multi-point, continuous testing. Attached Figure Description

[0019] Figure 1 This is a front view of a road hardness testing structure according to the present invention. Figure 2 This is a cross-sectional view of the rotating frame in this utility model; Figure 3 This is a schematic diagram of the sliding plate and rotating rod in this utility model; Figure 4 This is a schematic diagram of the structure of the support plate and the fixed base in this utility model; Figure 5 This is a schematic diagram of the rotating shaft and counterweight in this utility model.

[0020] In the diagram: 1. Base plate; 2. Vertical plate; 3. Sliding plate; 4. Rotating rod; 5. Rotating frame; 6. Rotating shaft; 7. Guide sleeve; 8. Counterweight; 9. Detection rod; 10. Weighting block; 11. Limiting hole; 12. Insert rod; 13. Friction block one; 14. Support plate one; 15. Fixed seat one; 16. Sliding rod one; 17. Friction block two; 18. Rotating handle one; 19. Hinge one; 20. Friction block three; 21. Support plate two; 22. Fixed seat two; 23. Sliding rod two; 24. Friction block four; 25. Rotating handle two; 26. Hinge two. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0024] Please see Figures 1-5 A road hardness testing structure includes a base plate 1, two upright plates 2 fixedly connected to the base plate 1, a sliding plate 3 slidably connected to the upright plates 2, a rotating rod 4 rotatably connected between the two sliding plates 3, a rotating frame 5 rotatably connected to the rotating rod 4, a through hole in the middle of the rotating frame 5, two rotating shafts 6 rotatably connected inside the through hole of the rotating frame 5, a guide sleeve 7 fixedly connected between the two rotating shafts 6, a counterweight 8 fixedly connected to the lower part of the guide sleeve 7, a testing rod 9 slidably connected inside the guide sleeve 7, a scale line on the outer side of the testing rod 9, a weight block 10 fixedly connected to the top of the testing rod 9, a limiting structure for the sliding plate 3, and a pressing structure for the rotating frame 5; both the upright plates 2 and the sliding plate 3 are provided with limiting holes 11, and insert rods 12 are inserted into the limiting holes 11 of the upright plates 2 and the sliding plate 3.

[0025] Please see Figure 4 The limiting structure includes a friction block 13, which is fixedly connected to one end of the rotating rod 4. A support plate 14 is fixedly connected to the sliding plate 3, and a fixed seat 15 is fixedly connected to the support plate 14. A sliding rod 16 is slidably connected to the fixed seat 15, and a friction block 17 is fixedly connected to the sliding rod 16. The friction block 17 abuts against the friction block 13. A rotating handle 18 is hinged to the fixed seat, and a hinge member 19 is hinged between the rotating handle 18 and the sliding rod 16.

[0026] Please see Figure 5 The extrusion structure includes two friction blocks 20, which are fixed to the rotating shaft 6. The rotating frame 5 is fixed to two support plates 21, and the support plates 21 are fixed to a fixed seat 22. The fixed seat 22 is slidably connected to a sliding rod 23, and the sliding rod 23 is fixed to a friction block 24, which abuts against the friction block 20. The fixed seat 22 is hinged to a rotating handle 25, and a hinge 26 is hinged between the rotating handle 25 and the sliding rod 23. The weight of the front and rear sides of the rotating frame 5 is in a balanced state.

[0027] The working principle of this utility model: Place the device at the test position, then pull the insertion rod 12 out of the limiting hole 11. Adjust the height of the sliding plate 3, then insert the insertion rod 12 into the limiting hole 11 of the sliding plate 3 and the upright plate 2. Then swing the handle 18 to rotate it along the fixed base 15. Rotating the handle 18 drives the sliding rod 16 to slide along the fixed base 15 through the hinge 19. The sliding rod 16 causes the friction block 17 to lose its compression with the friction block 13. Under the action of gravity, the rotating frame 5 and the parts on it are in the same direction as gravity. Then swing the handle 18 in the opposite direction to make the friction block 13 and the friction block 13... Friction block 217 presses down, thus fixing the rotating rod 4 and its position on the rotating frame 5. Then, the two rotating handles 25 are swung to both sides. The rotating handles 25 drive the sliding rod 23 to move through the hinge 26, causing friction block 424 to lose contact with friction block 320. Under the gravity of the counterweight 8, the central axis of the guide sleeve 7 is made parallel to the direction of gravity. Then, the rotating handles 25 are swung in the opposite direction, causing friction block 424 to press and limit friction block 320. Then, the detection rod 9 is inserted into the guide sleeve 7. At this time, the detection rod 9 is parallel to the direction of gravity, improving the detection accuracy of the detection rod 9 in detecting road surface hardness. According to the scale lines on the detection rod 9, the height of the detection rod 9 is adjusted. Then, the detection rod 9 is released. Under the action of the weight block 10, the detection rod 9 falls freely and contacts the road surface, thus completing the detection.

[0028] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A road hardness testing structure, comprising a base plate (1), characterized in that: The base plate (1) is fixedly connected to two upright plates (2). The upright plates (2) are slidably connected to a sliding plate (3). A rotating rod (4) is rotatably connected between the two sliding plates (3). A rotating frame (5) is rotatably connected to the rotating rod (4). A through hole is provided in the middle of the rotating frame (5). Two rotating shafts (6) are rotatably connected in the through hole of the rotating frame (5). A guide sleeve (7) is fixedly connected between the two rotating shafts (6). A counterweight (8) is fixedly connected to the lower part of the guide sleeve (7). A detection rod (9) is slidably connected in the guide sleeve (7). A scale line is provided on the outside of the detection rod (9). A weight block (10) is fixedly connected to the top of the detection rod (9). The sliding plate (3) is provided with a limit structure. The rotating frame (5) is provided with a compression structure.

2. The road hardness testing structure according to claim 1, characterized in that: Both the upright plate (2) and the sliding plate (3) are provided with limiting holes (11), and insert rods (12) are inserted into the limiting holes (11) of the upright plate (2) and the sliding plate (3).

3. The road hardness testing structure according to claim 1, characterized in that: The limiting structure includes a friction block (13), which is fixedly connected to one end of the rotating rod (4), and a support plate (14) is fixedly connected to the sliding plate (3), and a fixed seat (15) is fixedly connected to the support plate (14).

4. The road hardness testing structure according to claim 3, characterized in that: The fixed base (15) is slidably connected to the sliding rod (16), and the sliding rod (16) is fixedly connected to the friction block (17), which abuts against the friction block (13).

5. The road hardness testing structure according to claim 4, characterized in that: The fixed base is hinged to a rotating handle (18), and a hinge member (19) is hinged between the rotating handle (18) and the sliding rod (16).

6. The road hardness testing structure according to claim 5, characterized in that: The extrusion structure includes two friction blocks (20), which are respectively fixed to the rotating shaft (6). The rotating frame (5) is fixed to two support plates (21), and the support plates (21) are fixed to a fixed seat (22).

7. A road hardness testing structure according to claim 6, characterized in that: The fixed base 2 (22) is slidably connected to the sliding rod 2 (23), and the sliding rod 2 (23) is fixedly connected to the friction block 4 (24), and the friction block 4 (24) abuts against the friction block 3 (20).

8. The road hardness testing structure according to claim 7, characterized in that: The fixed base (22) is hinged to a rotating handle (25), and a hinge member (26) is hinged between the rotating handle (25) and the sliding rod (23). The weight of the front and rear sides of the rotating frame (5) is in a balanced state.

Images