A special encapsulation and protection mold for a road surface internal sensor

Abstract

The utility model discloses a kind of packaging protective moulds special for road surface internal sensor, the protective mould includes the mould body for placing sensor, the mould body includes forming cylinder, base and compaction cover, the lower end of the forming cylinder is arranged on base, diaphragm is arranged in the forming cylinder inside and along inner wall enclosure, the lead exit of sensor is symmetrically arranged in the lower end of the forming cylinder two sides side wall, positioning hole is arranged on the bottom outer surface of base, the compaction cover is arranged in the upper end of forming cylinder and along diaphragm enclosure into cylinder inner wall.The packaging protective mould of the utility model is preprocessed to sensor and forms test piece, guarantee the reasonable placement of sensor lead during forming process, help to improve the accuracy of subsequent monitoring, guarantee test piece surface roughness degree, reduce the degree of damage that sensor is subjected to in road surface construction process, and then improve the service life of sensor in road surface.

Description

Technical Field

[0001] This utility model belongs to the field of mixed material specimen preparation technology, and in particular relates to a special encapsulation and protection mold for road surface internal sensors. Background Technology

[0002] Pre-encapsulation protection of sensors before their installation on the road surface plays a crucial role in safeguarding their performance. One of the most important pre-encapsulation protective measures is minimizing damage to the sensors during construction. Given the potential for sensor movement and damage during construction, and the inability to guarantee sensor survival after road completion, pre-construction fixation and protection are necessary. To avoid introducing materials other than road surface materials, the road surface material itself is used for sensor protection. Current fixation methods primarily involve molding composite specimens and placing the sensor-embedded specimens on the road surface for simultaneous construction. Commonly used composite specimen sizes are cylindrical and rectangular. Researchers have conducted experiments placing sensors within rectangular specimens and found that the rectangular specimens exacerbate stress concentration caused by the sensor within the road surface. Furthermore, indoor cylindrical molds cannot accommodate the sensors.

[0003] Furthermore, the surface of the molded embedded sensor specimen is rough, making demolding impossible with traditional closed molds. Therefore, it is necessary to develop a mold device that can house the sensor, allow the lead wires to extend outwards, and facilitate demolding, in order to provide protective treatment for the sensor. Utility Model Content

[0004] The purpose of this utility model is to provide a special encapsulation and protective mold for sensors inside road surfaces. This encapsulation and protective mold pre-processes the sensor and forms a specimen, ensuring the surface roughness of the specimen and reducing the degree of damage to the sensor during road construction. To achieve the above objective, this utility model adopts the following technical solution:

[0005] According to one aspect of the present invention, a special encapsulation and protective mold for road surface internal sensors is provided. The protective mold includes a mold body for placing the sensor. The mold body includes a molded cylinder, a base, and a compaction cover. The lower end of the molded cylinder is disposed on the base. A diaphragm is disposed inside the molded cylinder and enclosed along the inner wall. Sensor lead outlets are symmetrically disposed on the two side walls of the lower end of the molded cylinder. A positioning hole is disposed on the bottom outer surface of the base. The compaction cover is disposed at the upper end of the molded cylinder and along the inner wall of the cylinder enclosed by the diaphragm.

[0006] In a further preferred embodiment of the above scheme, the molded cylinder is composed of a first semi-cylindrical body and a second semi-cylindrical body that are symmetrically enclosed to each other. Multiple symmetrically fitted connecting ears are respectively provided on the outer edge of the enclosed area of ​​the first semi-cylindrical body and the second semi-cylindrical body. The first semi-cylindrical body and the second semi-cylindrical body are fixed together by fixing bolts on the connecting ears.

[0007] In a further preferred embodiment of the above scheme, L-shaped steps are respectively provided at the junction of the lower ends of the first semi-cylinder and the lower ends of the second semi-cylinder to form an L-shaped lead wire outlet.

[0008] In a further preferred embodiment of the above scheme, the upper end height of the diaphragm is greater than the upper end height of the molded cylinder, the inner sidewall of the diaphragm is concave-convex, and the outer sidewall of the diaphragm has a smooth surface.

[0009] In a further preferred embodiment of the above scheme, a groove is provided on the upper surface of the compacted cover, and a lifting rod is horizontally provided between the two sides of the opening of the groove.

[0010] In a further preferred embodiment of the above scheme, a downwardly extending protrusion is provided on the lower surface of the compacted cover, the length of which does not exceed 2mm.

[0011] In a further preferred embodiment of the above scheme, the upper surface of the base is provided with a protrusion that inserts into the lower end of the molding cylinder, so that the outer wall of the protrusion and the edge of the base form an annular support surface, and the outer wall of the protrusion fits against the inner wall of the lower end of the molding cylinder.

[0012] In summary, because this utility model adopts the above-mentioned technical solution, it has the following technical effects:

[0013] (1) The sensor is pre-processed by using a special protective mold for the internal sensor of the road surface, which fixes the position of the sensor in the road surface and ensures the proper placement of the sensor wires during the molding process, which helps to improve the accuracy of subsequent monitoring.

[0014] (2) By using a special protective mold for internal sensors of the road surface, the test piece of the embedded sensor was formed indoors, which provides a new way for the research of subsequent road sensors. It not only achieves double protection for the sensor, but also reduces the degree of damage to the sensor during road construction, thereby improving the service life of the sensor in the road surface.

[0015] (3) The protective mold of this utility model can ensure the surface roughness of the specimen. When the specimen is pre-embedded in the road construction, the surface of the specimen and the road structure are effectively cast and bonded, which can ensure that the surface of the specimen and the road structure are subjected to uniform stress. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of a special packaging and protective mold for road surface internal sensors according to this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the molded cylinder of this utility model;

[0018] Figure 3 This is a schematic diagram of the assembly structure of the molded cylinder of this utility model;

[0019] Figure 4 This is a structural schematic diagram of the base of this utility model;

[0020] Figure 5 This is a schematic diagram of the lower surface structure of the compacted cover of this utility model;

[0021] In the attached diagram, the components are: mold body 1, forming cylinder 10, diaphragm 11, lead wire outlet 12, base 20, positioning hole 21, compaction cover 30, groove 31, lifting rod 32, protruding column 33, vibration table 40, annular limiting groove 41, limiting column 42, first semi-cylindrical body 100, second semi-cylindrical body 101, connecting ear 102, fixing bolt 103, L-shaped step 104, protrusion 201, and annular support surface 202. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of this utility model, and these aspects can be achieved even without these specific details.

[0023] Combination Figure 1This utility model provides a special encapsulation and protective mold for sensors inside road surfaces. The protective mold includes a mold body 1 for placing the sensor. The protective mold is used to encapsulate the sensor inside, and the asphalt mixture poured inside the protective mold pre-embeds the sensor to form a test block. This test block is then embedded inside the road surface as a specimen, which not only ensures the monitoring accuracy of the sensor but also reduces stress concentration caused by the sensor inside the road surface, ensuring uniform stress on the road structure. The mold body 1 includes a molding cylinder 10, a base 20, and a compacted cover 30. The lower end of the molding cylinder 10 is mounted on the base 20. A diaphragm 11 is arranged inside the molding cylinder 10 and enclosed along its inner wall. Sensor lead outlets 12 are symmetrically arranged on both sides of the lower end of the molding cylinder 10. A positioning hole 21 is provided on the bottom outer surface of the base 20. The compaction cover 30 is provided at the upper end of the molding cylinder 10 and along the inner wall of the cylinder enclosed by the diaphragm 11. The upper end height of the diaphragm 11 is greater than the upper end height of the molding cylinder 10. The inner side wall of the diaphragm 11 is concave and convex, and the outer side wall of the diaphragm 11 is smooth. When the asphalt mixture is formed in the space formed by the diaphragm 11, the surface of the mixture specimen can be made to have a concave and convex shape, ensuring the surface roughness of the specimen.

[0024] In this utility model, combined with Figure 1 , Figure 2 , Figure 3 As shown, the molding cylinder 10 is composed of a first semi-cylindrical body 100 and a second semi-cylindrical body 101 that are symmetrically enclosed. Multiple symmetrically fitted connecting ears 102 are respectively provided on the outer edge of the enclosed area of ​​the first semi-cylindrical body 100 and the second semi-cylindrical body 101. The first semi-cylindrical body 100 and the second semi-cylindrical body 101 are fixed together by fixing bolts 103 on the connecting ears 102. L-shaped steps 104 forming lead wire outlets 12 are respectively provided at the enclosed areas of the lower ends of the first semi-cylindrical body 100 and the lower ends of the second semi-cylindrical body 101. These steps allow the sensor to be placed inside the molding cylinder 10 and ensures that the sensor wires are properly placed and led out from the lead wire outlets 12. The molding cylinder 10, with its opening mechanism consisting of the first semi-cylindrical body 100 and the second semi-cylindrical body 101, enables rapid demolding of the test block with the embedded sensor. The lead wire outlets 12 formed by the L-shaped steps 104 prevent the sensor from moving up and down. Bolts and nuts are provided between the two sides of the first semi-cylindrical body 100 and the second semi-cylindrical body 101 for engagement. Since the traditional demolding method cannot demold the embedded specimen, the entire mold is opened from both sides of the first semi-cylindrical body 100 and the second semi-cylindrical body 101 to achieve rapid demolding of the specimen.

[0025] In this utility model, such as Figure 4As shown, the upper surface of the base 20 is provided with a protrusion 201 that inserts into the lower end of the molding cylinder 10, so that the outer wall of the protrusion 201 and the edge of the base 20 form an annular support surface 202. When the protrusion 201 extends into the lower end of the molding cylinder 10, the lower end of the molding cylinder 10 is supported on the annular support surface 202, and the inner wall of the lower end of the molding cylinder 10 is attached to the outer wall of the protrusion 201. The outer wall of the protrusion 201 is attached to the inner wall of the lower end of the molding cylinder 10, and the upper surface of the protrusion 201 is concave and convex to ensure the roughness of the lower surface of the asphalt mixture specimen.

[0026] In this utility model, such as Figure 5 As shown, a groove 31 is provided on the upper surface of the compacted cover 30, and a lifting rod 32 is horizontally provided between the two sides of the opening of the groove 31. The compacted cover 30 is placed into or removed from the molding cylinder 10 by the lifting rod 32. A downwardly extending protrusion 33 is provided on the lower surface of the compacted cover 30. The length of the protrusion 33 is no more than 2 mm. After the asphalt mixture is poured, when the compacted cover 30 is placed into the opening of the cylinder formed by the diaphragm sheet 11, the protrusion 33 is pressed into the asphalt mixture, so that the surface of the mixture specimen can have a certain roughness.

[0027] Combined with this application Figures 1 to 5 The process for preparing sensor hybrid specimens using a special encapsulation and protective mold for road surface internal sensors according to this utility model is as follows:

[0028] S1. First, place the base 20 in the annular limiting groove 41 set on the surface of the vibration table 40, so that the limiting post 42 in the annular limiting groove 41 is inserted into the positioning hole 21 on the bottom outer surface of the base 20.

[0029] S2. The first semi-cylindrical body 100 and the second semi-cylindrical body 101 are joined together using fixing bolts 103 to form a molded cylinder 10. Then the molded cylinder 10 is placed on the base 20. Then the diaphragm sheet 11 is rolled into a cylindrical shape and placed inside the molded cylinder 10 so that the diaphragm sheet 11 adheres to the inner wall of the molded cylinder 10.

[0030] S3. Use a small shovel to shovel the well-mixed asphalt mixture into the diaphragm 11 set in the molding cylinder 10. According to the sensor placement requirements, embed the sensor in the asphalt mixture. Adjust the length of the sensor wire extending out of the lead wire outlet 12. Then gradually fill the molding cylinder 10 with asphalt mixture and use a tamper to tamp it along the perimeter until the surface of the mixture is flat. Place the compaction cover 30 on top of the mixture and start the vibration table 40 to vibrate and compact the mixture. After the mixture is formed, proceed to the next step. During the mixture forming process, ensure the proper placement of the sensor wire (according to the forming requirements of different mixed material specimens, the mold body 1 containing the forming mixture needs to be placed in an oven for preheating).

[0031] S4. After the mixture is vibrated and compacted to form a specimen, the mold body 1 is removed and the base 20 is removed. The mold containing the specimen is cured according to the specimen forming requirements. Then, the fixing bolts 103 are removed, and the two sides of the forming cylinder 10 are opened for demolding, thus completing the preparation of the asphalt mixture specimen with embedded sensor.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A pavement-internal-sensor-specific encapsulation-protection mold, characterized by: The protective mold includes a mold body for placing the sensor. The mold body includes a molded cylinder, a base, and a compaction cover. The lower end of the molded cylinder is disposed on the base. A diaphragm is disposed inside the molded cylinder and enclosed along the inner wall. Sensor lead outlets are symmetrically disposed on the two side walls at the lower end of the molded cylinder. A positioning hole is disposed on the bottom outer surface of the base. The compaction cover is disposed at the upper end of the molded cylinder and along the inner wall of the cylinder enclosed by the diaphragm.

2. A road surface internal sensor specific encapsulation protection mold according to claim 1, characterized in that: The molded cylinder is composed of a first semi-cylindrical body and a second semi-cylindrical body that are symmetrically enclosed. Multiple symmetrically fitted connecting ears are provided on the outer edge of the enclosed area of ​​the first semi-cylindrical body and the second semi-cylindrical body. The first semi-cylindrical body and the second semi-cylindrical body are fixed together by fixing bolts on the connecting ears.

3. The special packaging and protective mold for road surface internal sensors according to claim 2, characterized in that: L-shaped steps forming lead wire outlets are provided at the junction of the lower ends of the first semi-cylinder and the lower ends of the second semi-cylinder.

4. The special packaging and protective mold for road surface internal sensors according to claim 1, characterized in that: The upper end of the diaphragm is higher than the upper end of the molded cylinder. The inner wall of the diaphragm is concave and convex, and the outer wall of the diaphragm is smooth.

5. A special encapsulation and protective mold for road surface internal sensors according to claim 1, characterized in that: A groove is provided on the upper surface of the compacted cover, and a lifting rod is horizontally provided between the two sides of the opening of the groove.

6. A special encapsulation and protective mold for road surface internal sensors according to claim 1 or 5, characterized in that: A downwardly extending protrusion is provided on the lower surface of the compacted cover, and the length of the protrusion does not exceed 2mm.

7. The special packaging and protective mold for road surface internal sensors according to claim 1, characterized in that: The upper surface of the base is provided with a protrusion that inserts into the lower end of the molding cylinder, so that the outer wall of the protrusion and the edge of the base form an annular support surface, and the outer wall of the protrusion fits against the inner wall of the lower end of the molding cylinder.

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