Stretching stress collector of highway semi-rigid base under temperature and humidity change

Abstract

The utility model discloses a kind of tensile stress collectors of highway semi-rigid base under temperature and humidity change, it is related to road engineering technical field, including support bin, the inside of support bin is provided with support cylinder, support cylinder is fixedly sleeved with mounting seat one in its inside, the inner circular wall surface of mounting seat one is fixedly sleeved with vibrating wire strain gauge, infrared thermometer is fixedly installed on the left side of mounting seat one, wireless transmission module is fixedly installed on the left side of mounting seat one, support bin, pressure sensor, driving motor, support disc, connecting rod, mounting seat two, lancet, positioning plate, gas tank, air inlet pipe and air bag are cooperated with each other by being set, air bag can be inflated and expanded quickly in emergency, the gap inside support bin is filled, support cylinder is protected, prevent multiple sensors inside support cylinder from being damaged, reach the emergency protection effect of support cylinder, avoid the interruption in the tensile stress collection of highway semi-rigid base.

Description

Technical Field

[0001] This utility model relates to the field of road engineering technology, specifically to a tensile stress acquisition device for semi-rigid road base courses under temperature and humidity changes. Background Technology

[0002] Semi-rigid road base refers to a pavement structure layer composed of inorganic binders such as cement, lime, fly ash, stabilized granular materials, or soil materials, possessing mechanical properties between flexibility and rigidity. Initially, it exhibits flexibility, but gradually forms a plate-like structure as the material hardens. Its main function is to bear vehicle loads and diffuse stress to the roadbed, while resisting temperature and humidity deformation. The tensile stress acquisition of semi-rigid road base refers to the process of measuring the internal tensile stress generated by the semi-rigid base material under changes in environmental temperature and humidity and traffic loads in real time or periodically using professional monitoring equipment and technical means.

[0003] Extensive research revealed that existing technologies often utilize strain gauges to detect the tensile stress of semi-rigid road base layers. However, during road construction, road rollers are commonly used to compact the road surface, with the vibrating drum of the roller reaching a contact pressure of 600-800 kPa. In contrast, the compressive strength of the glass fiber substrate in the strain gauge is only 120-150 kPa. This causes the sensor leads to be subjected to alternating shear forces during compaction, leading to damage and making it difficult to continuously monitor the semi-rigid road base layer. Therefore, based on the above research and combined with existing technologies, a tensile stress acquisition device for semi-rigid road base layers under temperature and humidity changes is proposed to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a tensile stress acquisition device for semi-rigid road base courses under temperature and humidity changes, so as to solve the problems mentioned in the background art.

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

[0006] A tensile stress acquisition device for a semi-rigid road base under temperature and humidity changes includes: a support chamber, a support cylinder inside the support chamber, a mounting base fixedly sleeved inside the support cylinder, a vibrating wire strain gauge fixedly sleeved on the inner circular wall of the mounting base, an infrared thermometer fixedly mounted on the left side of the mounting base, a wireless transmission module fixedly mounted on the left side of the mounting base, a non-contact capacitive humidity sensor fixedly mounted on the right side of the mounting base, and a cover plate installed on the top surface of the support chamber;

[0007] An emergency protection mechanism is installed on both sides inside the support chamber to protect the support cylinder.

[0008] Furthermore, the emergency protection mechanism includes two airbags, which are respectively fixedly installed on both sides of the inside of the support chamber. Two support boxes are fixedly installed on the bottom surface of the inside of the support chamber. An air inlet pipe is fixedly installed on one side of each support box, and the air inlet pipe is connected to the airbag. A gas cylinder for supplying gas is threadedly connected to the other side of each support box. A support plate is rotatably connected inside the support box. A connecting rod is rotatably connected to one end of the support plate. A positioning plate is fixedly installed inside the support box. A needle is slidably connected inside the positioning plate. A second mounting seat is fixedly installed at the other end of the needle. One end of the connecting rod is rotatably connected to the second mounting seat. A drive motor for driving the support plate to rotate is installed on one side of the inside of the support box. A support roller is fixedly installed on one side of the support plate. One end of the support roller is rotatably connected to one side of the inside of the support box. A pressure sensor is fixedly installed on the bottom surface of the cover plate.

[0009] Furthermore, several support seats are fixedly installed on the bottom surface of the support chamber, and an electric push rod is rotatably connected inside the support seat. One end of the electric push rod is universally connected to the bottom surface of the support cylinder, and a gyroscope is fixedly installed on the bottom surface of the support cylinder.

[0010] Furthermore, a feed pipe is provided at one end of the support cylinder, a valve is fixedly sleeved on the outer circular wall of the feed pipe, and several stabilizing plates are fixedly sleeved on the inner circular wall of the support cylinder.

[0011] Furthermore, a bushing is fixedly installed on one side of the positioning plate, and the inner circular wall of the bushing is slidably connected to the outer circular wall of the needle.

[0012] Furthermore, a sealing gasket is provided between the support chamber and the cover plate, and a threaded post is connected through the top surface of the cover plate. The lower end of the threaded post passes through the sealing gasket and is threadedly connected to the top surface of the support chamber.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the set support chamber, the staff will bury the support chamber into the semi-rigid base of the highway. Multiple sensors inside the support cylinder can collect tensile stress data under different temperatures and humidity and transmit it to the back-end. Through the cooperation of the set support chamber, pressure sensor, drive motor, support plate, connecting rod, mounting base II, needle, positioning plate, air tank, air inlet pipe and air bag, the air bag can be quickly inflated in an emergency to fill the gap inside the support chamber and provide protection for the support cylinder, prevent the multiple sensors inside the support cylinder from being damaged, achieve the emergency protection effect for the support cylinder, and avoid interruption of tensile stress collection of the semi-rigid base of the highway. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the cover plate and support compartment of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between the feed pipe and the support cylinder of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure between the mounting base and the support cylinder of this utility model;

[0019] Figure 5 This is a left view schematic diagram of the mounting base structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the connection structure between the support disc and the support roller of this utility model;

[0021] Figure 7 This is a bottom view schematic diagram of the connection structure between the cover plate and the sealing gasket of this utility model.

[0022] In the diagram: 1. Support chamber; 2. Cover plate; 3. Sealing gasket; 4. Threaded column; 5. Support cylinder; 6. Airbag; 7. Support box; 8. Air inlet pipe; 9. Feed pipe; 10. Valve; 11. Support base; 12. Electric push rod; 13. Gyroscope; 14. Mounting base one; 15. Vibrating wire strain gauge; 16. Infrared thermometer; 17. Wireless transmission module; 18. Stabilizing plate; 19. Non-contact capacitive humidity sensor; 20. Support plate; 21. Connecting rod; 22. Positioning plate; 23. Bushing; 24. Needle; 25. Mounting base two; 26. Drive motor; 27. Air tank; 28. Support roller; 29. ​​Pressure sensor. Detailed Implementation

[0023] 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.

[0024] In one typical implementation of this application, please refer to Figures 1 to 7A tensile stress acquisition device for a semi-rigid road base under temperature and humidity changes includes a support chamber 1, a support cylinder 5 inside the support chamber 1, a mounting base 14 fixedly sleeved inside the support cylinder 5, a vibrating wire strain gauge 15 fixedly sleeved on the inner circular wall of the mounting base 14, an infrared thermometer 16 fixedly mounted on the left side of the mounting base 14 for detecting the temperature of the semi-rigid road base without contact, and a wireless transmission module 17 fixedly mounted on the left side of the mounting base 14 for transmitting the detection data to... In the back, a non-contact capacitive humidity sensor 19 is fixedly installed on the right side of the mounting base 14. The non-contact capacitive humidity sensor 19 is used to detect the humidity of the semi-rigid base layer of the highway without contact. A cover plate 2 is installed on the top surface of the support chamber 1. An information processing module is fixedly installed on the right side of the mounting base 14. The vibrating wire strain gauge 15, infrared thermometer 16, wireless transmission module 17 and non-contact capacitive humidity sensor 19 are electrically connected to the information processing module. An emergency protection mechanism is set on both sides inside the support chamber 1 to protect the support cylinder 5.

[0025] Preferably, the strain of the semi-rigid road base is monitored in real time by a vibrating wire strain gauge 15, and temperature and humidity data are collected synchronously by an infrared thermometer 16 and a non-contact capacitive humidity sensor 19. The information processing module calculates the actual stress according to the set model and uploads it to the background through the wireless transmission module 17. This method is suitable for long-term monitoring of the semi-rigid road base.

[0026] The emergency protection mechanism includes two airbags 6, which are fixedly installed on both sides of the inside of the support chamber 1. Two support boxes 7 are fixedly installed on the bottom surface of the inside of the support chamber 1. An air inlet pipe 8 is fixedly installed on one side of each support box 7, connecting to the airbags 6. A gas cylinder 27 for supplying gas is threadedly connected to the other side of each support box 7. A support plate 20 is rotatably connected inside each support box 7. One end of the support plate 20 is rotatably connected to a connecting rod 21 via a pivot. A positioning plate 22 is fixedly installed inside each support box 7. A piercing needle 24 is slidably connected inside the positioning plate 22. One end of the piercing needle 24 is sharp and used to pierce the gas cylinder 27. The other end of the piercing needle 24 is fixedly installed with a mounting bracket. The second mounting base 25 has one end of the connecting rod 21 rotatably connected to the second mounting base 25 via a rotating shaft. A drive motor 26 for driving the support plate 20 to rotate is installed on one side of the inside of the support box 7. One end of the drive shaft of the drive motor 26 is fixedly connected to one side of the support plate 20. A support roller 28 is fixedly installed on one side of the support plate 20. One end of the support roller 28 is rotatably connected to one side of the inside of the support box 7 via a bearing. The support roller 28 supports the rotation of the support plate 20 and improves the stability of the rotation of the support plate 20. A pressure sensor 29 is fixedly installed on the bottom surface of the cover plate 2. The pressure sensor 29 is used to detect pressure. Both the drive motor 26 and the pressure sensor 29 are electrically connected to the information processing module.

[0027] Specifically, by setting a threshold pressure for the pressure sensor 29, if the pressure exceeds the threshold pressure when the road roller passes over the support chamber 1, the information processing module starts the drive motor 26. The drive motor 26 drives the support plate 20 to rotate. The rotation of the support plate 20, in conjunction with the connecting rod 21, causes the piercing needle 24 to pierce the gas tank 27. This allows the nitrogen gas inside the gas tank 27 to enter the interior of the air bladder 6 through the air inlet pipe 8, causing the air bladder 6 to expand rapidly to protect the support cylinder 5 and prevent damage to the multiple sensors inside the support cylinder 5.

[0028] Preferably, the support chamber 1 is embedded into the semi-rigid base layer of the highway by the workers. Multiple sensors inside the support cylinder 5 can collect tensile stress data under different temperatures and humidity conditions and transmit it to the backend. During use, road rollers may be operating on the road surface. When the road roller passes through the area where the support chamber 1 is located, the pressure sensor 29 on the cover plate 2 detects the pressure. The workers set a pressure threshold for the pressure sensor 29. If the pressure is greater than the threshold, the pressure sensor 29 transmits a signal to the information processing module. The information processing module starts the drive motor 26. The drive shaft of the drive motor 26 rotates, causing the support plate 20 to rotate. The rotation of the support plate 20 causes the connecting rod 21 to move... The forward rotation of the connecting rod 21 causes the needle 24 to move forward on the positioning plate 22 via the mounting base 25. This causes the needle 24 to pierce one end of the gas tank 27. Subsequently, the support plate 20 continues to rotate, causing the needle 24 to move backward and reset. This allows the nitrogen inside the gas tank 27 to enter the air bladder 6 through the air inlet pipe 8. The air bladder 6 quickly inflates and expands, filling the gaps inside the support chamber 1 to provide protection for the support cylinder 5 and prevent damage to the multiple sensors inside the support cylinder 5. If the pressure is less than the threshold, it will not be activated, achieving an emergency protection effect for the support cylinder 5 and avoiding interruption of the tensile stress collection of the semi-rigid road base. This helps staff collect the tensile stress of the semi-rigid road base under different temperature and humidity conditions.

[0029] Several support bases 11 are fixedly installed on the bottom surface of the support chamber 1. Electric push rods 12 are rotatably connected inside the support bases 11 via rotating shafts. The telescopic shafts of the electric push rods 12 are connected to the bottom surface of the support cylinder 5 via universal joints. A gyroscope 13 is fixedly installed on the bottom surface of the support cylinder 5. The gyroscope 13 can detect the tilt state of the support cylinder 5 and, in conjunction with the multiple electric push rods 12, ensure that the support cylinder 5 and the sensors inside are always horizontal. The electric push rods 12 and the gyroscope 13 are electrically connected to the information processing module.

[0030] Preferably, after the support chamber 1 is buried in the semi-rigid base of the highway, the support chamber 1 may settle due to the rolling of vehicles on the road surface, which causes the support chamber 1 to tilt. The tilt of the support chamber 1 causes the support cylinder 5 inside to tilt. When the gyroscope 13 detects the tilt of the support cylinder 5, it will transmit the data to the information processing module. The information processing module will activate multiple electric push rods 12 according to the information. The telescopic axes of the multiple electric push rods 12 will retract inward or move outward to adjust the position of the support cylinder 5, so that the support cylinder 5 always remains horizontal, and prevent errors in the tensile stress data collected due to the tilt of the support chamber 1.

[0031] A feed pipe 9 is provided at one end of the support cylinder 5. A valve 10 is fixedly sleeved on the outer circular wall of the feed pipe 9. Resin can be injected through the feed pipe 9 and the valve 10. Several stabilizing plates 18 are fixedly sleeved on the inner circular wall of the support cylinder 5. The honeycomb-shaped stabilizing plates 18 can support the support cylinder 5 and improve its strength.

[0032] Preferably, by using the valve 10, the operator introduces resin into the valve 10 and opens the valve 10, which allows the resin to enter the interior of the support chamber 1 through the valve 10 and the feed pipe 9, thereby encapsulating the sensor inside the support cylinder 5.

[0033] A bushing 23 is fixedly installed on one side of the positioning plate 22, and the inner circular wall of the bushing 23 is slidably connected to the outer circular wall of the needle 24.

[0034] Preferably, the bushing 23 can reduce the friction between the needle 24 and the positioning plate 22, thereby improving the smoothness of the movement of the needle 24.

[0035] A sealing gasket 3 is provided between the support chamber 1 and the cover plate 2. The sealing gasket 3 is used to seal the support chamber 1. A threaded post 4 is connected through the top surface of the cover plate 2. The lower end of the threaded post 4 passes through the sealing gasket 3 and is threadedly connected to the top surface of the support chamber 1.

[0036] Preferably, by setting the sealing gasket 3, the operator places the sealing gasket 3 on the support chamber 1, places the cover plate 2 on the top surface of the sealing gasket 3, and places the threaded post 4 on the cover plate 2 and rotates the threaded post 4, the cover plate 2 and the sealing gasket 3 can be fixed on the support chamber 1, thereby achieving the effect of fixing the cover plate 2.

[0037] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A tensile stress acquisition device for semi-rigid road base courses under temperature and humidity changes, characterized in that, include: A support chamber (1) is provided inside the support chamber (1), and a support cylinder (5) is fixedly sleeved inside the support cylinder (5). A vibrating wire strain gauge (15) is fixedly sleeved on the inner circular wall of the support cylinder (14). An infrared thermometer (16) is fixedly installed on the left side of the support cylinder (14). A wireless transmission module (17) is fixedly installed on the left side of the support cylinder (14). A non-contact capacitive humidity sensor (19) is fixedly installed on the right side of the support cylinder (1). A cover plate (2) is installed on the top surface of the support chamber (1). An emergency protection mechanism is installed on both sides inside the support chamber (1) to protect the support cylinder (5).

2. The tensile stress acquisition device for a semi-rigid road base under temperature and humidity changes according to claim 1, characterized in that: The emergency protection mechanism includes two airbags (6), which are fixedly installed on both sides of the inside of the support chamber (1). Two support boxes (7) are fixedly installed on the bottom surface of the inside of the support chamber (1). An air inlet pipe (8) is fixedly installed on one side of the support box (7), and the air inlet pipe (8) is connected to the airbag (6). A gas cylinder (27) for supplying gas is threadedly connected to the other side of the support box (7). A support plate (20) is rotatably connected inside the support box (7). A connecting rod (21) is rotatably connected to one end of the support plate (20). The inside of the support box (7) is fixedly... A positioning plate (22) is installed, and a needle (24) is slidably connected inside the positioning plate (22). The other end of the needle (24) is fixedly installed with a mounting base (25). One end of the connecting rod (21) is rotatably connected to the mounting base (25). A drive motor (26) for driving the support plate (20) to rotate is installed on one side of the inside of the support box (7). A support roller (28) is fixedly installed on one side of the support plate (20). One end of the support roller (28) is rotatably connected to one side of the inside of the support box (7). A pressure sensor (29) is fixedly installed on the bottom surface of the cover plate (2).

3. The tensile stress acquisition device for semi-rigid road base courses under temperature and humidity changes according to claim 1, characterized in that: Several support seats (11) are fixedly installed on the bottom surface of the support chamber (1). An electric push rod (12) is rotatably connected inside the support seat (11). One end of the electric push rod (12) is universally connected to the bottom surface of the support cylinder (5). A gyroscope (13) is fixedly installed on the bottom surface of the support cylinder (5).

4. The tensile stress acquisition device for semi-rigid road base courses under temperature and humidity changes according to claim 1, characterized in that: One end of the support cylinder (5) is provided with a feed pipe (9), and a valve (10) is fixedly sleeved on the outer circular wall of the feed pipe (9). Several stabilizing plates (18) are fixedly sleeved on the inner circular wall of the support cylinder (5).

5. A tensile stress acquisition device for a semi-rigid highway base course under temperature and humidity changes according to claim 2, characterized in that: A bushing (23) is fixedly installed on one side of the positioning plate (22), and the inner circular wall of the bushing (23) is slidably connected to the outer circular wall of the needle (24).

6. A tensile stress acquisition device for a semi-rigid highway base course under temperature and humidity changes according to claim 1, characterized in that: A sealing gasket (3) is provided between the support chamber (1) and the cover plate (2). A threaded post (4) is connected through the top surface of the cover plate (2). The lower end of the threaded post (4) passes through the sealing gasket (3) and is threadedly connected to the top surface of the support chamber (1).

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