Virtual paving thickness detection device for roadbed and pavement construction
By combining a positioning chassis, guide rod, and infrared rangefinder to detect the paving thickness, the problem of physical exertion and unstable detection caused by manually inserting steel bars or bamboo sticks in the existing technology has been solved, achieving a simple and efficient measurement effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 张明振
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-21
AI Technical Summary
In existing technology, roadbed and pavement construction relies on manual insertion of steel bars or bamboo sticks to detect the thickness of loose paving, which results in high physical exertion for operators and unstable detection results with large errors.
The detection device combines a positioning chassis, guide rod, slider, scale rod, and infrared rangefinder. The guide rod prevents the measuring rod from tilting, and the infrared rangefinder and scale rod provide dual verification to ensure measurement accuracy.
It is easy to operate, reduces manpower consumption, improves measurement stability and accuracy, and ensures the reliability of test results.
Smart Images
Figure CN224148502U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of road construction equipment, and in particular to a device for detecting the thickness of loose paving in roadbed and pavement construction. Background Technology
[0002] Currently, in addition to extremely high requirements for safe construction, quality and progress control are also key points to be controlled during the construction process. Enhancing the construction progress while ensuring safety and quality is also an issue to be considered during the construction process. Previously, in the process of granular material paving, the traditional method was to directly insert small diameter steel bars or bamboo sticks into the paved loose material until they reached the next structural layer, and then pull them out to measure the insertion depth with a tape measure. Alternatively, the loose paving height was drawn on the bamboo sticks in advance, and the loose paving thickness was controlled by visually marking lines below or above the loose material.
[0003] However, these tools still have some problems:
[0004] Reliance on manpower: When steel bars or bamboo skewers are inserted into the ground, it still requires manpower to push them downwards to insert them into the road surface, which is a test of the operator's physical strength.
[0005] Insufficient stability: During the insertion process, due to the lack of sufficient auxiliary structures, the steel bars or bamboo sticks are prone to shaking, which may lead to skew and thus affect the accuracy of the test results. Utility Model Content
[0006] To address the aforementioned technical problems, this utility model provides a device for detecting the thickness of loose paving in roadbed and pavement construction.
[0007] The technical solution includes a positioning chassis, on which two guide rods are fixedly mounted. The upper ends of the two guide rods are fixedly connected by a fixing rod. A slider is slidably mounted on the guide rod. A scale rod is fixedly mounted in the middle of the slider. A guide seat is located in the middle of the positioning chassis. The scale rod slides within the guide seat.
[0008] A handle is fixedly mounted on one side of the slider, and an infrared rangefinder is fixedly mounted on the other side, with the infrared emitting end of the infrared rangefinder facing the positioning chassis.
[0009] The slider is also equipped with a locking unit.
[0010] Preferably, the locking unit includes two clamping blocks slidably disposed on the slider, and each clamping block has a V-shaped clamping groove on its opposite side;
[0011] The two clamping blocks are located in the middle of the guide rod;
[0012] An adjustment block is rotatably mounted in the middle of the slider, the adjustment block is located between the two clamping blocks, and a wrench is fixedly mounted on the adjustment block.
[0013] Preferably, the two clamping blocks are connected by a tension spring.
[0014] Preferably, two bosses are fixedly provided on the slider, and a sliding groove is provided on the clamping block, with each clamping block slidably connected to an adjacent boss through the sliding groove.
[0015] Preferably, two cams are symmetrically arranged on the side wall of the adjusting block, and the side wall of each cam abuts against one of the clamping blocks.
[0016] Preferably, the lower end of the scale rod is conical, and scale lines are provided on the body of the scale rod.
[0017] The beneficial effects of the technical solution provided by this utility model embodiment are: simple operation and convenient use; through the positioning chassis and guide seat, measurement errors caused by the tilt of the measuring rod can be effectively prevented; through the scale value on the ruler rod and the value displayed by the infrared rangefinder, the reliability of the data is ensured by double verification. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 1 .
[0019] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 2 .
[0020] Figure 3 This is a schematic diagram of the slider and locking unit according to an embodiment of the present utility model.
[0021] Figure 4 This is a schematic diagram of the adjustment block according to an embodiment of the present invention.
[0022] The attached figures are labeled as follows: 1. Positioning base; 2. Guide rod; 3. Slider; 4. Ruler rod; 5. Guide seat; 6. Handle; 7. Infrared rangefinder; 8. Locking unit; 9. Clamping block; 10. Adjusting block; 11. Wrench; 12. Tension spring; 13. Cam. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are only for explaining this utility model and are not intended to limit it.
[0024] It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] Example 1
[0028] See Figures 1 to 4 This utility model provides a device for detecting the thickness of loose pavement in roadbed and pavement construction, including a positioning base 1, two guide rods 2 are fixedly installed on the positioning base 1, the upper ends of the two guide rods 2 are fixedly connected by a fixing rod, a slider 3 is slidably installed on the guide rod 2, a ruler rod 4 is fixedly installed in the middle of the slider 3, a guide seat 5 is installed in the middle of the positioning base 1, and the ruler rod 4 slides in the guide seat 5.
[0029] The guide seat 5 ensures that the ruler rod 4 will not be tilted during the insertion of the sparse material, thus ensuring measurement accuracy;
[0030] A handle 6 is fixedly installed on one side of the slider 3, which makes it easy for the user to apply force. An infrared rangefinder 7 is fixedly installed on the other side, with the infrared emitting end of the infrared rangefinder 7 facing the positioning chassis 1.
[0031] The slider 3 is also equipped with a locking unit 8.
[0032] Place the positioning base 1 horizontally on the loosely paved road surface, hold the handle 6 on the slider 3, and slide the ruler 4 up and down along the two guide rods 2. The bottom end of the ruler 4 passes through the guide seat 5 and is vertically inserted into the loosely paved layer material to be tested. Continue to press down the ruler 4 until it touches the compacted base layer.
[0033] When the device is placed on the compacted road surface, the positioning base 1 and the ruler rod 4 are in contact with the compacted road surface. At this time, the infrared rangefinder 7 emits an infrared signal to the positioning base 1, and a height is obtained by reflecting the signal. When the ruler rod 4 is inserted into the loose pavement material to be measured, the infrared rangefinder 7 emits an infrared signal to the positioning base 1, and another height is obtained by transmitting the signal. The difference between the two heights is the thickness of the loose pavement.
[0034] The locking unit 8 is used to fix the position of the slider 3, keeping the height of the scale rod 4 unchanged. The scale value on the scale rod 4 is read directly and verified against the value displayed by the infrared rangefinder 7.
[0035] The locking unit 8 includes two clamping blocks 9 that are slidably disposed on the slider 3, and each clamping block 9 has a V-shaped clamping groove on its opposite side;
[0036] The two clamping blocks 9 are located in the middle of the guide rod 2;
[0037] An adjusting block 10 is rotatably mounted in the middle of the slider 3. The adjusting block 10 is located between two clamping blocks 9, and a wrench 11 is fixedly mounted on the adjusting block 10.
[0038] After the measuring rod is pressed down to the target position, the lever 11 on the adjusting block 10 is turned to drive the two clamping blocks 9 to slide towards each other. The V-shaped clamping groove automatically engages with the surface of the guide rod 2. The friction between the clamping block 9 and the guide rod 2 keeps the slider 3 in a stable position, making it easy for the user to pull out the scale rod 4 and take a reading.
[0039] The two clamping blocks 9 are connected by a tension spring 12.
[0040] The tension spring 12 remains contracted, keeping the two clamping blocks 9 away from the guide rod 2 in a normally open state. When the wrench 11 is pulled, the clamping blocks 9 are forced to move towards the guide rod 2 against the tension of the tension spring 12, thus achieving clamping. When the wrench 11 is released, the contraction force of the tension spring 12 automatically pulls the clamping blocks 9 away from the guide rod 2.
[0041] Two protrusions are fixedly installed on the slider 3, and a sliding groove is opened on the clamping block 9. Each clamping block 9 is slidably connected to an adjacent protrusion through the sliding groove.
[0042] When the wrench 11 is turned, the clamping block 9 slides linearly along the boss through the slide groove, ensuring that the movement trajectory of the clamping block 9 is strictly limited.
[0043] Two cams 13 are symmetrically arranged on the side wall of the adjusting block 10, and the side wall of each cam 13 abuts against one of the clamping blocks 9.
[0044] When the wrench 11 is pulled, the adjusting block 10 drives the symmetrical cam 13 to rotate synchronously. The outer contour of the cam 13 pushes the clamping block 9 to translate towards the guide rod 2, converting the rotational motion into the linear motion of the clamping block 9, thereby realizing the rapid clamping of the guide rod 2 by the clamping block 9.
[0045] The lower end of the scale rod 4 is conical, and scale lines are set on the rod body of the scale rod 4.
[0046] Furthermore, a pointer is set on the guide seat 5, and after the scale rod 4 touches the bottom, the scale value indicated by the pointer is the current paving thickness.
[0047] When using this utility model, place the positioning base 1 horizontally on the paved road surface, hold the handle 6 on the slider 3, and slide the ruler rod 4 up and down along the two guide rods 2. The bottom end of the ruler rod 4 passes through the guide seat 5 and is vertically inserted into the paved layer material to be tested. Continue to press down the ruler rod 4 until it touches the compacted base layer.
[0048] When the device is placed on the compacted road surface, the positioning base 1 and the ruler rod 4 are in contact with the compacted road surface. At this time, the infrared rangefinder 7 emits an infrared signal to the positioning base 1, and a height is obtained by reflecting the signal. When the ruler rod 4 is inserted into the loose pavement material to be measured, the infrared rangefinder 7 emits an infrared signal to the positioning base 1, and another height is obtained by transmitting the signal. The difference between the two heights is the thickness of the loose pavement.
[0049] The locking unit 8 is used to fix the position of the slider 3, keeping the height of the scale rod 4 unchanged. The scale value on the scale rod 4 is read directly and verified against the value displayed by the infrared rangefinder 7.
[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A device for detecting the thickness of loose paving in roadbed and pavement construction, characterized in that, The system includes a positioning chassis (1), on which two guide rods (2) are fixedly installed. The upper ends of the two guide rods (2) are fixedly connected by a fixing rod. A slider (3) is slidably installed on the guide rod (2). A scale rod (4) is fixedly installed in the middle of the slider (3). A guide seat (5) is installed in the middle of the positioning chassis (1). The scale rod (4) slides in the guide seat (5). A handle (6) is fixedly installed on one side of the slider (3), and an infrared rangefinder (7) is fixedly installed on the other side. The infrared emitting end of the infrared rangefinder (7) faces the positioning chassis (1). The slider (3) is also provided with a locking unit (8).
2. The false thickness detecting device for roadbed pavement construction according to claim 1, wherein The locking unit (8) includes two clamping blocks (9) slidably disposed on the slider (3), and each clamping block (9) has a V-shaped clamping groove on its opposite side; The two clamps (9) are located in the middle of the guide rod (2); An adjustment block (10) is rotatably set in the middle of the slider (3). The adjustment block (10) is located between the two clamping blocks (9). A wrench (11) is fixedly set on the adjustment block (10).
3. The false thickness detecting device for roadbed pavement construction according to claim 2, wherein The two clamps (9) are connected by a tension spring (12).
4. The false thickness detecting device for roadbed pavement construction according to claim 2, wherein Two protrusions are fixedly provided on the slider (3), and a sliding groove is provided on the clamp (9). Each clamp (9) is slidably connected to an adjacent protrusion through the sliding groove.
5. The false thickness detecting device for roadbed pavement construction according to claim 2, wherein Two cams (13) are symmetrically arranged on the side wall of the adjusting block (10), and the side wall of each cam (13) abuts against one of the clamping blocks (9).
6. The false thickness detecting device for roadbed pavement construction according to claim 1, wherein The lower end of the ruler rod (4) is conical, and scale lines are provided on the rod body of the ruler rod (4).