Mounting structure

Abstract

The utility model provides an installation structure used for installing a detection device of a road guardrail stand column, the detection device comprises two acceleration sensors and two laser range finders which are in one-to-one correspondence connection, and the installation structure comprises a stand column; the two installation seats are arranged on the stand column in the vertical direction at intervals, installation grooves are formed in the installation seats and used for exposing part of the outer wall area of the stand column and forming installation point positions, and the acceleration sensor and the laser range finder are arranged in the installation grooves so as to be attached to the outer wall of the stand column. According to the utility model, the technical problem that the detection result of the embedding depth of the stand column is not accurate enough in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of column detection technology, and in particular to an installation structure. Background Technology

[0002] The methods for detecting the burial depth of highway guardrail posts are mainly divided into two categories: destructive testing and non-destructive testing. Destructive testing methods all employ the post-extraction method, where, after post construction, the testing unit randomly samples a certain number of posts on-site, uses mechanical equipment to pull them out, and then measures the burial depth. Non-destructive testing methods currently mainly include two types: elastic wave method and ultrasonic guided wave method. These methods can measure the burial depth of posts without pulling them out after construction. Currently, non-destructive testing methods for guardrail post burial depth are widely used due to their high efficiency and accurate results. However, existing guardrail post burial depth testing equipment and technologies have the following problems: 1. Reliance on manual operation: Current guardrail post burial depth testing equipment and technologies may still rely heavily on manual operation, such as equipment installation, parameter adjustment, and data collection. This manual intervention may introduce subjectivity and operational errors, affecting the accuracy of the test results. 2. Low positioning and measurement accuracy: Some equipment may have inaccurate positioning or large measurement errors, leading to less precise test results. Especially in the detection of post burial depth, accurate positioning and precise measurement are crucial for the safety of guardrails. Errors can pose potential risks to traffic safety. Poor equipment stability: Some equipment may have stability issues during operation, such as being susceptible to external interference and vibration, affecting the accuracy of the detection and increasing the possibility of errors. 3. Operational complexity and inefficiency: If the detection equipment is too complex to operate, requiring cumbersome procedures or specialized skills, it may lead to low operator efficiency, increased working time and costs, and may also increase the risk of human error. 4. Insufficient applicability: Some equipment may not be well-suited to specific models or shapes of guardrail posts, failing to meet the detection needs of various situations. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides an installation structure that solves the technical problem of insufficient accuracy in detecting the embedment depth of columns in existing technologies.

[0004] According to the embodiments of this utility model, the following technical solution is adopted:

[0005] An installation structure for installing a detection device for highway guardrail posts, the detection device comprising: two accelerometers and two laser rangefinders connected in a one-to-one correspondence; the installation structure comprising:

[0006] Columns;

[0007] Two mounting bases are spaced apart on the column in the vertical direction. The mounting bases are provided with mounting grooves to expose part of the outer wall area of ​​the column and form mounting points. The accelerometer and the laser rangefinder are located in the mounting grooves to fit against the outer wall of the column.

[0008] Preferably, the mounting base includes a first mounting block and a second mounting block that are detachably connected, the first mounting block and the second mounting block forming a mounting cavity for accommodating the column.

[0009] Preferably, the first mounting block and the second mounting block are provided with a plurality of interconnected first mounting holes, and the first mounting holes are provided with fixing bolts. The fixing bolts pass through the corresponding first mounting holes in sequence to restrict the relative movement of the first mounting block or the second mounting block.

[0010] Preferably, a plurality of interconnected second mounting holes are provided between adjacent first mounting blocks and second mounting blocks, and a plurality of first positioning rods are inserted into the corresponding second mounting holes.

[0011] Preferably, a plurality of second positioning rods are provided between the first mounting block and the second mounting block and the ground.

[0012] Preferably, a fixed base is provided in the mounting groove, and the accelerometer and the laser rangefinder are attached to the column through the fixed base.

[0013] Preferably, the fixing base is made of magnetic material.

[0014] Compared with existing technologies, this utility model has the following advantages: 1. Optimized detection process: Laser technology is used to automatically locate the column position, reducing manual operation and improving detection accuracy and efficiency. 2. Improved equipment stability:

[0015] Optimize equipment structure, enhance stability design, reduce equipment vibration and fluctuations, and improve detection accuracy. 3. Design efficient data algorithms: Employ efficient data algorithms and real-time analysis technology to quickly process and accurately analyze detection data. This can effectively improve the operational efficiency, stability, and accuracy of the rapid detection equipment for highway guardrail post burial depth, providing a more reliable guarantee for highway traffic safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the detection device installed on the column in one embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the detection device installed in another position on the column according to one embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the detection device and installation structure in one embodiment of the present invention.

[0019] In the above attached figures: 1. Column; 2. Accelerometer; 3. Laser rangefinder; 4. Mounting base; 5. First mounting block; 6. Second mounting block; 7. Mounting groove; 8. Mounting cavity; 9. First mounting hole; 10. Second mounting hole; 11. First positioning rod; 12. Second positioning rod; 13. Fixed base; 14. Vibration hammer; 15. Ground; 16. Data acquisition and control integrated module; 17. Laptop computer. Detailed Implementation

[0020] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the technical solutions of this utility model are further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0021] See Figures 1 to 3 This utility model provides an installation structure for installing a detection device for a highway guardrail post 1. The detection device includes two accelerometers 2 and two laser rangefinders 3 connected in a one-to-one correspondence. The installation structure includes:

[0022] Column 1;

[0023] Two mounting bases 4 are spaced apart along the vertical direction on the column 1. Each mounting base 4 has a mounting groove 7 to expose part of the outer wall area of ​​the column 1 and form a mounting point. The accelerometer 2 and the laser rangefinder 3 are located in the mounting groove 7 to fit against the outer wall of the column 1.

[0024] In this embodiment, two accelerometers 2 and two laser rangefinders 3 are mounted on the column 1 at vertical intervals via mounting bases 4, so that a set of accelerometers 2 and a set of laser rangefinders 3 are mounted on the same vertical line via mounting slots 7 on the mounting bases 4. The data acquisition and control integration module 16 connects the accelerometers 2 and the laser rangefinders 3 to synchronously acquire vibration and distance measurement data and transmit the data to a laptop computer 17. The laptop computer 17 processes the data acquisition, signals, and calculates the burial depth. Specifically, the laser rangefinders 3 are used to obtain the distance h1 between the two accelerometers 2 and the downward acceleration. The distance h2 between the speed sensor 2 and the ground 15 is used to strike the top of the column 1 with the excitation hammer 14 to generate an impact excitation. Vibration data S1 and S2 are obtained using two acceleration sensors 2. The elastic wave velocity V of the column 1 is obtained based on the first wave time difference t of S1 and S2 and the distance h1 between the sensors. Autocorrelation and cross-correlation analysis are performed on the S1 and S2 signals. Combined with the wave velocity V of the column 1, the lengths L1, L2 and L3 of the column 1 are obtained respectively. Based on the length H of the column 1 exposed above the ground 15, the burial depth D of the guardrail column 1 is calculated as D={(L1+L2+L3) / 3}-H. Specific implementation examples:

[0026] Sensor arrangement: The upper accelerometer 2 is positioned 0.5m from the top of column 1, and the lower accelerometer 2 is positioned 1.5m from the ground 15 (h1=1m).

[0027] The measured t=0.2ms → V=5000m / s (the theoretical wave velocity of steel column 1 is approximately 5100m / s).

[0028] L1=2.8m, L2=2.7m, L3=2.75m → Average L=2.75m

[0029] H=1.0m → Burial depth D=1.75m.

[0030] The mounting base 4 includes a first mounting block 5 and a second mounting block 6 that are detachably connected. The first mounting block 5 and the second mounting block 6 form a mounting cavity 8 for accommodating the column 1.

[0031] In this embodiment, the mounting base 4 is detachably connected by the first mounting block 5 and the second mounting block 6, which together form a mounting cavity 8 for wrapping and fixing the column 1. The size of the mounting cavity 8 matches the outer diameter of the column 1 to ensure that the column 1 is stably clamped, while exposing part of the outer wall area to fit the sensor. By adjusting the opening degree of the first mounting block 5 or the second mounting block 6, it can adapt to columns 1 of different diameters. The split design ensures clamping force while reducing damage to the surface of the column 1.

[0032] The first mounting block 5 and the second mounting block 6 are provided with a plurality of interconnected first mounting holes 9. Each first mounting hole 9 is provided with a fixing bolt. The fixing bolt passes through the corresponding first mounting hole 9 in sequence to restrict the relative movement of the first mounting block 5 or the second mounting block 6.

[0033] In this embodiment, the first mounting block 5 and the second mounting block 6 are provided with a plurality of interconnected first mounting holes 9. When the first mounting block 5 and the second mounting block 6 are engaged, the first mounting holes 9 are aligned to form a mounting channel. The fixing bolt passes through the aligned mounting channel to fasten the two mounting blocks together, preventing relative movement and avoiding displacement caused by vibration or external force, which would affect the measurement accuracy of the sensor.

[0034] A plurality of interconnected second mounting holes 10 are provided between adjacent first mounting blocks 5 and second mounting blocks 6, and a plurality of first positioning rods 11 are inserted into the corresponding second mounting holes 10.

[0035] In this embodiment, four interconnected second mounting holes 10 are provided between the upper and lower first mounting blocks 5 and the upper and lower second mounting blocks 6. Four first positioning rods 11 are inserted into the four second mounting holes 10. During installation, the four first positioning rods 11 are first inserted into the lower first mounting hole 9, and then the upper first mounting hole 9 is inserted. The first positioning rods 11 can prevent the upper mounting seat 4 from undergoing vertical displacement.

[0036] Multiple second positioning rods 12 are provided between the first mounting block 5 and the second mounting block 6 and the ground 15.

[0037] In this embodiment, four second positioning rods 12 are provided between the ground 15 and the first mounting block 5 and the second mounting block 6 located below it. The second positioning rods 12 are used to limit the vertical displacement of the first positioning block and the second positioning block located below the column 1, so as to ensure measurement accuracy.

[0038] The mounting groove 7 is provided with a fixed base 13, and the accelerometer 2 and the laser rangefinder 3 are attached to the column 1 through the fixed base 13.

[0039] In this embodiment, the fixed base 13 serves as an intermediate connection structure between the sensor and the column 1, providing a stable installation platform to ensure that the accelerometer 2, the laser rangefinder 3, and the surface of the column 1 are in contact. At the same time, the fixed base 13 can be made of neodymium magnets to ensure that the accelerometer 2 and the laser rangefinder 3 do not detach from the outer wall of the column 1 under vibration.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An installation structure for installing a detection device for highway guardrail posts, the detection device comprising: The system comprises two accelerometers and two laser rangefinders connected in a one-to-one correspondence, characterized in that the mounting structure includes: Columns; Two mounting bases are spaced apart on the column in the vertical direction. The mounting bases are provided with mounting grooves to expose part of the outer wall area of ​​the column and form mounting points. The accelerometer and the laser rangefinder are located in the mounting grooves to fit against the outer wall of the column.

2. The installation structure according to claim 1, characterized in that, The mounting base includes a first mounting block and a second mounting block that are detachably connected. The first mounting block and the second mounting block enclose a mounting cavity for accommodating the column.

3. The installation structure according to claim 2, characterized in that, The first mounting block and the second mounting block are provided with a plurality of interconnected first mounting holes. Each first mounting hole is provided with a fixing bolt. The fixing bolt passes through the corresponding first mounting hole in sequence to restrict the relative movement of the first mounting block or the second mounting block.

4. The installation structure according to claim 3, characterized in that, A plurality of interconnected second mounting holes are provided between adjacent first mounting blocks and second mounting blocks, and a plurality of first positioning rods are inserted into the corresponding second mounting holes.

5. The installation structure according to claim 4, characterized in that, Multiple second positioning rods are provided between the first mounting block and the second mounting block and the ground.

6. The installation structure according to claim 1, characterized in that, The mounting slot is equipped with a fixed base, and the accelerometer and the laser rangefinder are attached to the column through the fixed base.

7. The installation structure according to claim 6, characterized in that, The fixing base is made of magnetic material.

Images