Dynamic weighing piezoelectric film sensor installation protection device

Abstract

The utility model discloses a dynamic weighing piezoelectric film sensor installation protection device which comprises a roadbed, an installation groove is formed in the roadbed, a fixing plate is arranged in the installation groove, a sensor body is arranged at the upper end of the fixing plate, a stainless steel plate is arranged at the upper end of the sensor body, and the stainless steel plate is connected with the installation groove. The sensor body is provided with a stainless steel plate, the upper end of the stainless steel plate is fixedly connected with a plurality of anti-slip strips which are evenly distributed, a supporting frame is arranged on the outer side of the stainless steel plate, and elastic sealant is arranged between the roadbed and the supporting frame. Lossless vertical force transmission is realized, stress diffusion is avoided, a stress concentration area at the edge of the sensor body is avoided, the upper end of the stainless steel plate is provided with the anti-slip strip, and the surface anti-slip design (the friction coefficient is greater than or equal to 0.8) reduces the occurrence of wheel slip.

Description

Technical Field

[0001] This utility model relates to the technical field of installation protection devices, specifically an installation protection device for a dynamic weighing piezoelectric thin film sensor. Background Technology

[0002] Piezoelectric thin-film sensors are cable-like products approximately 3-4 meters long (depending on the actual width of a single lane) and less than 5 mm in diameter. In application, a groove approximately 10 mm wide and 40 mm deep is cut into the road surface, and the sensor is installed using potting compound. Traditional construction methods require steps such as cutting the road surface, cleaning, installation, potting, and curing.

[0003] When existing devices are in use, if the road surface (cement, asphalt, etc.) has potholes or damage, it will cause the vehicle to bounce when traveling at high speed. The wheels cannot directly and effectively act on the piezoelectric film sensor, resulting in a decrease in the system's measurement accuracy. Therefore, we need to propose a dynamic weighing piezoelectric film sensor installation protection device. Utility Model Content

[0004] The purpose of this utility model is to provide a dynamic weighing piezoelectric thin film sensor installation protection device. By setting a stainless steel plate with a flat top surface and a convex bottom structure, the stainless steel plate can easily transmit pressure to the sensor body, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dynamic weighing piezoelectric thin-film sensor mounting protection device, comprising:

[0007] The roadbed has an internal mounting groove, a fixing plate inside the mounting groove, a sensor body on the upper end of the fixing plate, a stainless steel plate on the upper end of the sensor body, and multiple evenly distributed anti-slip strips fixedly connected to the upper end of the stainless steel plate. A support frame is provided on the outer side of the stainless steel plate, and elastic sealant is provided between the roadbed and the support frame. An installation component for installing the stainless steel plate is provided inside the support frame.

[0008] Preferably, the mounting assembly includes fixing blocks and fixing bolts. Multiple fixing blocks are symmetrically distributed on the side wall of the stainless steel plate, and fixing bolts are provided inside the multiple fixing blocks. The multiple fixing bolts are threadedly connected to the support frame.

[0009] Preferably, the stainless steel plate has two symmetrically distributed first sealing grooves on its side wall, and a first sealing strip is provided inside the first sealing groove. The first sealing strip is fixedly connected to the support frame.

[0010] Preferably, the stainless steel plate has two symmetrically distributed second sealing grooves on its sidewall, and a second sealing strip is provided inside the second sealing groove.

[0011] Preferably, a mounting plate is fixedly connected to the side wall of the second sealing strip, and the mounting plate is fixedly connected to the support frame.

[0012] Preferably, a sealing frame is fixedly connected to the upper end of the stainless steel plate, and the sealing frame is in contact with the support frame.

[0013] Preferably, the top of the stainless steel plate is flat and the bottom is convex, and the width of the bottom is the same as the width of the sensor body.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model features a stainless steel plate that is easy to disassemble. The convex structure at the bottom of the stainless steel plate is the same width as the sensor body, enabling lossless vertical force transmission, avoiding stress diffusion, and preventing stress concentration areas at the edges of the sensor body. In addition, the upper end of the stainless steel plate is equipped with anti-slip strips, and the surface anti-slip design (friction coefficient ≥0.8) reduces the occurrence of wheel slippage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 This is one of the structural schematic diagrams of a partial component of this utility model;

[0019] Figure 4 This is the second schematic diagram of the structure of a partial component of this utility model.

[0020] In the diagram: 1. Roadbed; 2. Mounting groove; 3. Fixing plate; 4. Sensor body; 5. Stainless steel plate; 6. Anti-slip strip; 7. Sealing frame; 8. Support frame; 9. Elastic sealant; 10. Fixing block; 11. Fixing bolt; 12. First sealing groove; 13. First sealing strip; 14. Second sealing groove; 15. Second sealing strip; 16. Mounting plate. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution:

[0023] A dynamic weighing piezoelectric thin-film sensor mounting protection device, comprising:

[0024] The roadbed 1 has an installation groove 2 inside, and a fixing plate 3 is installed inside the installation groove 2. A sensor body 4 is installed on the upper end of the fixing plate 3, and a stainless steel plate 5 is installed on the upper end of the sensor body 4. Multiple anti-slip strips 6 are fixedly connected to the upper end of the stainless steel plate 5. A support frame 8 is installed on the outer side of the stainless steel plate 5. Elastic sealant 9 is installed between the roadbed 1 and the support frame 8. An installation component for installing the stainless steel plate 5 is installed inside the support frame 8.

[0025] For example, during installation, the fixing plate 3 is first installed at the bottom of the mounting groove 2, then the sensor body 4 is installed at the top of the fixing plate 3, and finally the stainless steel plate 5 is installed inside the support frame 8. The support frame 8 supports the stainless steel plate 5, and the elastic sealant 9 fixes the support frame 8. At the same time, the elastic sealant 9 is elastic, which makes it easy for the stainless steel plate 5 to transmit pressure to the sensor body 4. The width of the stainless steel plate 5 is parallel to the road driving direction, and the width of the stainless steel plate 5 is greater than 0.5 meters, so that the wheels can drive smoothly on the stainless steel plate 5.

[0026] The mounting components include fixing blocks 10 and fixing bolts 11. Multiple fixing blocks 10 are symmetrically distributed on the side wall of the stainless steel plate 5. Fixing bolts 11 are provided inside the multiple fixing blocks 10 and are threadedly connected to the support frame 8.

[0027] For example, the fixing block 10 slides into the interior of the support frame 8, and the fixing block 10 is fixedly installed inside the support frame 8 by the fixing bolt 11, and the stainless steel plate 5 is installed by the fixing block 10.

[0028] The stainless steel plate 5 has two symmetrically distributed first sealing grooves 12 on its side wall. The first sealing groove 12 is provided with a first sealing strip 13 inside, and the first sealing strip 13 is fixedly connected to the support frame 8.

[0029] For example, when the stainless steel plate 5 is installed inside the support frame 8, the first sealing strip 13 will be inserted into the first sealing groove 12. The first sealing strip 13 and the first sealing groove 12 cooperate to perform secondary sealing at the connection between the stainless steel plate 5 and the support frame 8.

[0030] The stainless steel plate 5 has two symmetrically distributed second sealing grooves 14 on its side wall. A second sealing strip 15 is provided inside the second sealing groove 14. An installation plate 16 is fixedly connected to the side wall of the second sealing strip 15. The installation plate 16 is fixedly connected to the support frame 8.

[0031] For example, when the stainless steel plate 5 is installed inside the support frame 8, the second sealing strip 15 will be inserted into the second sealing groove 14. The second sealing strip 15 and the second sealing groove 14 cooperate to seal the connection between the stainless steel plate 5 and the support frame 8 three times. The mounting plate 16 installs the second sealing strip 15.

[0032] A sealing frame 7 is fixedly connected to the upper end of the stainless steel plate 5, and the sealing frame 7 is in contact with the support frame 8.

[0033] For example, when the stainless steel plate 5 is installed inside the support frame 8, the sealing frame 7 is locked onto the upper end of the support frame 8 along with the stainless steel plate 5, thus providing a preliminary seal at the connection between the stainless steel plate 5 and the support frame 8.

[0034] The top of the stainless steel plate 5 is flat, the bottom is convex, and the width of the bottom is the same as the width of the sensor body 4.

[0035] For example, the bottom convex structure is the same width as the sensor, ensuring that the wheel load is directly transmitted to the sensitive area of ​​the sensor body 4 through the stainless steel plate 5 without loss, avoiding stress diffusion caused by width mismatch, and the same width design avoids stress concentration areas at the edge of the sensor body 4.

[0036] Working principle: During installation, first install the fixing plate 3 at the bottom of the mounting groove 2, then install the sensor body 4 at the top of the fixing plate 3, and finally install the stainless steel plate 5 inside the support frame 8. The support frame 8 supports the stainless steel plate 5, and the elastic sealant 9 fixes the support frame 8. At the same time, the elastic sealant 9 is elastic, which makes it easy for the stainless steel plate 5 to transmit pressure to the sensor body 4. The fixing block 10 slides into the inside of the support frame 8, and the fixing bolt 11 fixes the fixing block 10 inside the support frame 8. The stainless steel plate 5 is installed through the fixing block 10.

[0037] When the stainless steel plate 5 is installed inside the support frame 8, the sealing frame 7 is secured to the upper end of the support frame 8 along with the stainless steel plate 5, providing a preliminary seal at the connection between the stainless steel plate 5 and the support frame 8. The first sealing strip 13 is then inserted into the first sealing groove 12, and the first sealing strip 13 and the first sealing groove 12 work together to provide a secondary seal at the connection between the stainless steel plate 5 and the support frame 8. The second sealing strip 15 is then inserted into the second sealing groove 14, and the second sealing strip 15 and the second sealing groove 14 work together to provide a tertiary seal at the connection between the stainless steel plate 5 and the support frame 8. The mounting plate 16 is then used to install the second sealing strip 15. This multi-stage sealing provides good protection for the sensor body 4.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dynamic weighing piezoelectric thin-film sensor mounting protection device, characterized in that, include: The roadbed (1) has an installation groove (2) inside. The installation groove (2) has a fixing plate (3) inside. The upper end of the fixing plate (3) has a sensor body (4). The upper end of the sensor body (4) has a stainless steel plate (5). The upper end of the stainless steel plate (5) has a plurality of evenly distributed anti-slip strips (6) fixedly connected. The outer side of the stainless steel plate (5) has a support frame (8). The roadbed (1) and the support frame (8) have an elastic sealant (9). The support frame (8) has an installation component for installing the stainless steel plate (5) inside.

2. The dynamic weighing piezoelectric thin-film sensor installation protection device according to claim 1, characterized in that, The installation assembly includes a fixing block (10) and a fixing bolt (11). Multiple fixing blocks (10) are symmetrically distributed on the side wall of the stainless steel plate (5). The fixing bolts (11) are provided inside the multiple fixing blocks (10). The multiple fixing bolts (11) are threadedly connected to the support frame (8).

3. The dynamic weighing piezoelectric thin-film sensor installation protection device according to claim 2, characterized in that, The stainless steel plate (5) has two symmetrically distributed first sealing grooves (12) on its side wall. The first sealing groove (12) is provided with a first sealing strip (13) inside. The first sealing strip (13) is fixedly connected to the support frame (8).

4. The dynamic weighing piezoelectric thin-film sensor installation protection device according to claim 3, characterized in that, The stainless steel plate (5) has two symmetrically distributed second sealing grooves (14) on its side wall, and a second sealing strip (15) is provided inside the second sealing groove (14).

5. The dynamic weighing piezoelectric thin-film sensor installation protection device according to claim 4, characterized in that, An mounting plate (16) is fixedly connected to the side wall of the second sealing strip (15), and the mounting plate (16) is fixedly connected to the support frame (8).

6. The dynamic weighing piezoelectric thin-film sensor mounting protection device according to claim 4, characterized in that, A sealing frame (7) is fixedly connected to the upper end of the stainless steel plate (5), and the sealing frame (7) is in contact with the support frame (8).

7. The dynamic weighing piezoelectric thin-film sensor installation protection device according to claim 6, characterized in that, The top of the stainless steel plate (5) is flat and the bottom is convex, and the width of the bottom is the same as the width of the sensor body (4).

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