A pavement structure layer thickness measuring device

Abstract

The utility model discloses a kind of road surface structure layer thickness measuring devices, belong to thickness measurement technical field, comprising: horizontal frame, sliding sleeve is equipped with ruler seat on it, and through slot is provided on ruler seat, and through slot is equipped with detachable ruler; Positioning screw, screw thread is connected in the front end of ruler seat, and the inner end of positioning screw extends to through slot and is rotationally connected with positioning block;Limiting screw, screw thread is connected in the side end of ruler seat, and the inner end of limiting screw extends to through slot and is rotationally connected with limiting plate;The scheme is limited to the position of ruler by ruler seat and through slot, that is, it can be guaranteed that ruler is always in perpendicular state descending, can prevent the situation that ruler is skewed and deviates during moving and measurement reading process, effectively avoid measurement reading to appear deviation, improve the accuracy of detection result;And measurement process is fast and convenient, without repeatedly adjusting the angle position of ruler, measurement efficiency is high, it is beneficial to popularization and application.

Description

Technical Field

[0001] This utility model relates to the field of thickness measurement technology, and more specifically, to a device for measuring the thickness of road structure layers. Background Technology

[0002] The pavement structural layer refers to the composite structure of a road, consisting of different materials and functional layers from the subgrade to the surface. The thickness of the pavement structural layer is an important indicator of pavement quality, ensuring road safety and durability, and enabling the timely detection and resolution of potential pavement problems.

[0003] Currently, industry standards mostly use a steel ruler to measure the thickness of the pavement structural layer vertically. However, with management departments placing increasing emphasis on the quality of engineering projects, verification inspections are needed before project completion. Therefore, the pavement structural layer material is excavated using pit digging and core drilling methods until the surface level is reached. A ruler is then laid horizontally across both sides of the pit, and a steel ruler is extended vertically from the center of the pit to the bottom. The distance from the bottom of the pit to the top of the ruler is measured; this distance represents the thickness of the structural layer.

[0004] However, during the measurement process, it is necessary to hold the ruler and extend it to the bottom of the pit, which is inconvenient and has a significant impact from human factors. The ruler is prone to tilting and shifting, and it is impossible to ensure that the ruler is in a vertical position, which will cause deviations in the measurement readings and thus affect the final test results, resulting in poor performance.

[0005] Therefore, it is necessary to provide a device for measuring the thickness of road surface structural layers to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide a road surface structure layer thickness measuring device to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A pavement structure layer thickness measuring device, comprising: A horizontal frame on which a ruler base is slidably mounted, and a through groove is provided on the ruler base, and a detachable ruler is provided in the through groove; A positioning screw is threaded to the front end of the ruler base, and the inner end of the positioning screw extends into the through groove and is rotatably connected to a positioning block. A limiting screw is threaded to the side end of the ruler base, and the inner end of the limiting screw extends to the through groove and is rotatably connected to the limiting plate.

[0008] Furthermore, extension frames are slidably inserted into the interior of both sides of the horizontal frame, and multiple fixing holes are provided on the extension frames. Fastening bolts that are compatible with the fixing holes are threaded onto the extension frames.

[0009] Furthermore, both the horizontal frame and the extension frame are threaded with studs at their bottoms, and the studs are provided with feet at their bottoms.

[0010] Furthermore, the bottom of the extension frame is provided with a clearance groove to avoid the studs at the bottom of the horizontal frame.

[0011] Furthermore, the horizontal frame is provided with multiple adjustment holes, and the ruler base is threaded with adjustment bolts that are compatible with the adjustment holes.

[0012] Furthermore, a spirit level is installed on the ruler base.

[0013] Furthermore, a pad is provided at the bottom of the ruler.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This method first inserts a ruler into the through slot of the ruler holder. Then, the two sides of the horizontal frame are placed across the two sides of the pit, allowing the ruler to slide along the through slot into the pit for thickness measurement. By limiting the position of the ruler through the ruler holder and the through slot, it is ensured that the ruler always descends vertically, preventing tilting or deviation during movement and measurement. This effectively avoids measurement deviations, greatly improves the stability of the ruler measurement, and thus improves the accuracy of the test results. Furthermore, the measurement process is quick and convenient, requiring no repeated adjustment of the ruler's angle and position. It has high measurement efficiency, good performance, and high practicality, making it suitable for widespread application.

[0015] 2. After inserting the ruler into the through slot of the ruler holder, the position of the ruler can be restricted by rotating the limiting screw through the limiting plate, which can prevent the ruler from shifting in the left and right directions; at the same time, the position of the ruler can be restricted by rotating the positioning screw through the positioning block, which can prevent the ruler from shifting in the front and back directions, thereby improving the stability of the ruler during movement and the perpendicularity of the measurement, and further improving the measurement accuracy.

[0016] 3. The ruler base can also slide along the horizontal frame, thereby changing the position of the ruler base and the ruler. This allows for adjustment of the ruler's measuring position according to the actual situation, or for the ruler to be in multiple different positions for measurement, resulting in high measurement accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall front structure of the measuring device of this utility model; Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 for Figure 1 Enlarged structural diagram at point B; Figure 4This is a top view of the structure of the ruler holder of this utility model; Figure 5 This is a schematic diagram of the overall structure of the back of the measuring device of this utility model; Figure 6 for Figure 5 Enlarged structural diagram at point C; Figure 7 This is a structural diagram of the horizontal frame before the ruler is installed, viewed from below.

[0018] Explanation of the labels in the diagram: 1. Horizontal frame; 2. Ruler base; 3. Through slot; 4. Ruler; 5. Positioning screw; 6. Positioning block; 7. Limiting screw; 8. Limiting plate; 9. Extension frame; 10. Fixing hole; 11. Fixing hole; 12. Stud; 13. Support leg; 14. Clear slot; 15. Adjustment hole; 16. Adjusting bolt; 17. Bubble spirit level; 18. Pad. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-7 A device for measuring the thickness of a road surface structure layer, comprising: A horizontal frame 1 is fitted with a ruler base 2, which is slidably mounted on the frame. The ruler base 2 has a through groove 3, and a detachable ruler 4 is mounted on the through groove 3. The positioning screw 5 is threaded to the front end of the ruler base 2, and the inner end of the positioning screw 5 extends into the through groove 3 and is rotatably connected to the positioning block 6. The limiting screw 7 is threaded to the side end of the ruler base 2, and the inner end of the limiting screw 7 extends to the through groove 3 and is rotatably connected to the limiting plate 8.

[0021] In use, after excavation is completed using the pit digging or core drilling method, this measuring device is used to measure the thickness. First, the ruler 4 is inserted into the through slot 3 of the ruler base 2. Then, the two sides of the horizontal frame 1 are placed across the two sides of the pit, ensuring the horizontal frame 1 is horizontal. The ruler 4 is then slid along the through slot 3, extending into the pit. When the ruler 4 touches the bottom, the scale reading on the ruler 4 at the ruler base 2 above the pit represents the thickness of the pit. The measured reading is the thickness of this pavement structure layer. By limiting the position of the ruler 4 through the ruler base 2 and the through slot 3, the ruler 4 is ensured to descend vertically, preventing tilting or deviation during movement and measurement. This effectively avoids measurement deviations, greatly improves the measurement stability of the ruler 4, and thus improves the accuracy of the test results. Furthermore, the measurement process is quick and convenient, eliminating the need for repeated adjustments to the angle of the ruler 4, significantly improving measurement efficiency. It has good performance, high practicality, and is conducive to widespread application.

[0022] After the ruler 4 is inserted into the through slot 3 of the ruler base 2, the limiting screw 7 can be rotated to move the limiting plate 8, thereby limiting the position of the ruler 4 on both sides of the through slot 3 without affecting the vertical sliding of the ruler 4, thus preventing the ruler 4 from shifting in the left and right directions; at the same time, the positioning screw 5 can be rotated to move the positioning block 6, thereby limiting the front and back directions of the ruler 4 without affecting the vertical sliding of the ruler 4, thus preventing the ruler 4 from shifting in the front and back directions, thereby improving the stability of the ruler 4 during movement and the perpendicularity of the measurement, and improving the measurement accuracy.

[0023] Furthermore, once the ruler 4 touches the bottom, it can be pressed down by the positioning block 6 to fix the ruler 4 in this state. After that, it is easier and more accurate to take readings after picking up the level 1 and the ruler 4, making it more convenient to measure and use.

[0024] Furthermore, the ruler 4 can be moved to the designated reading position, which can be selected as the qualified structural layer thickness. Then, the ruler 4 can be pressed by the positioning block 6 to fix the ruler 4 at this time. After that, the horizontal frame 1 can be placed on both sides of the pit, and the position of the ruler 4 in the pit can be used to determine whether the structural layer thickness is qualified. This can be used to detect the structural layer thickness, improve work efficiency and practicality.

[0025] The ruler base 2 can also slide along the horizontal frame 1, thereby changing the position of the ruler base 2 and the ruler 4, so as to adjust the measuring position of the ruler 4 according to the actual situation, or to make the ruler 4 be in multiple different positions for measurement, thereby further improving the measurement accuracy.

[0026] For preferred options, please refer to [link / reference]. Figure 1 , Figure 3 , Figure 5 and Figure 7Both sides of the horizontal frame 1 are slidably inserted with extension frames 9. Multiple fixing holes 10 are opened on the extension frames 9, and fastening bolts 11 that are compatible with the fixing holes 10 are threadedly connected to the extension frames 9.

[0027] This design allows the extension frame 9 to be moved back and forth along the interior of the horizontal frame 1 after loosening the fastening bolt 11. This adjusts the extension length of the extension frame 9, allowing it to extend further to accommodate larger pits. The position of the extension frame 9 can be adjusted to fit pits of varying widths, offering a wide range of applications and high flexibility. After adjustment, the extension frame 9 is fixed in position by tightening the fastening bolt 11 into the corresponding fixing hole 10, improving the stability of subsequent measurements.

[0028] For preferred options, please refer to [link / reference]. Figure 1 , Figure 3 , Figure 5 and Figure 7 Both the horizontal frame 1 and the extension frame 9 are threaded to the bottom with studs 12, and the bottom of the studs 12 is provided with feet 13.

[0029] This design allows the support legs 13 to support the horizontal frame 1 and the extension frame 9, ensuring the stability of the measuring device during use. Furthermore, the support legs 13 can be raised or lowered by rotating the stud 12, thus adjusting their height. Adjusting the height of the support legs 13 on both sides allows for adaptation to uneven ground outside the pit, further ensuring the stable placement of the horizontal frame 1 and the extension frame 9, thereby improving the stability and accuracy of subsequent ruler 4 measurements.

[0030] For preferred options, please refer to [link / reference]. Figure 7 The bottom of the extension frame 9 is provided with a relief groove 14 to avoid the studs 12 at the bottom of the horizontal frame 1.

[0031] With this design, the stud 12 at the bottom of the horizontal frame 1 is positioned in the recess 14. When the extension frame 9 moves, the recess 14 prevents the extension frame 9 from interfering with the stud 12, ensuring optimal performance. Furthermore, the recess 14 reduces the weight of the extension frame 9, making it easier to carry and use.

[0032] For preferred options, please refer to [link / reference]. Figure 4-6 The horizontal frame 1 is also provided with multiple adjustment holes 15, and the ruler base 2 is threaded with adjustment bolts 16 that are compatible with the adjustment holes 15.

[0033] With this design, after the ruler base 2 is slid along the horizontal frame 1 to the designated position, the ruler base 2 can be fixed by rotating the adjusting bolt 16 into the adjusting hole 15 at this position. This makes the movement of the ruler 4 on the ruler base 2 more stable. The fixing of the ruler base 2 can be selected according to specific needs, which is highly flexible.

[0034] For preferred options, please refer to [link / reference]. Figure 4-6 A bubble level 17 is installed on the ruler base 2. This design ensures that the level frame 1 remains horizontal during measurement by observing the bubble level 17, thereby improving the measurement accuracy of the ruler 4.

[0035] For preferred options, please refer to [link / reference]. Figure 1 and Figure 5 The bottom of the ruler 4 is equipped with a pad 18. This design, through the pad 18, allows the ruler 4 to contact the bottom of the pit when it enters the pit, increasing the contact area and ensuring that the ruler 4 does not directly insert into the lower structure of the pit during the measurement process, thus ensuring the accuracy of the measurement.

[0036] It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various modifications or changes based on them. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A device for measuring the thickness of a road surface structural layer, characterized in that, include: A horizontal frame (1) is provided with a ruler seat (2) which is slidably mounted on it. A through groove (3) is provided on the ruler seat (2), and a detachable ruler (4) is provided in the through groove (3). The positioning screw (5) is threaded to the front end of the ruler base (2), and the inner end of the positioning screw (5) extends into the through groove (3) and is rotatably connected to the positioning block (6). The limiting screw (7) is threaded to the side end of the ruler base (2), and the inner end of the limiting screw (7) extends to the through groove (3) and is rotatably connected to the limiting plate (8). The horizontal frame (1) has extension frames (9) slidably inserted inside both sides. The extension frames (9) have multiple fixing holes (10) and fastening bolts (11) that are compatible with the fixing holes (10) are threaded onto the extension frames (9).

2. The pavement structure layer thickness measuring device according to claim 1, characterized in that, The bottom of both the horizontal frame (1) and the extension frame (9) are threaded with studs (12), and the bottom of the studs (12) is provided with feet (13).

3. The pavement structure layer thickness measuring device according to claim 2, characterized in that, The bottom of the extension frame (9) is provided with a relief groove (14) to avoid the stud (12) at the bottom of the horizontal frame (1).

4. The pavement structure layer thickness measuring device according to claim 1, characterized in that, The horizontal frame (1) is also provided with multiple adjustment holes (15), and the ruler base (2) is threaded with adjustment bolts (16) that are compatible with the adjustment holes (15).

5. The pavement structure layer thickness measuring device according to claim 1, characterized in that, A level bubble (17) is installed on the ruler (2).

6. The pavement structure layer thickness measuring device according to claim 1, characterized in that, The bottom of the ruler (4) is provided with a pad (18).

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