Improved roadbed and pavement design experiment device

Abstract

The utility model relates to the technical field of roadbeds and pavements, and discloses an improved roadbed and pavement design experiment device which comprises an experiment box, and vibration monitoring mechanisms are arranged in the experiment box and on the outer side of the experiment box; the vibration monitoring mechanism comprises two sealing heat preservation doors, the front face of one sealing heat preservation door is fixedly connected with a controller body, the inner wall of the experiment box is fixedly connected with a semiconductor chilling plate, a carrying plate is arranged in the experiment box, the upper surface of the carrying plate is fixedly connected with a storage box, and the inner bottom wall of the experiment box is fixedly connected with two bases. According to the improved roadbed and pavement design experimental device, the vibration monitoring mechanism is arranged, so that the roadbed and pavement material in the storage box can be experimented under different temperatures, different frequencies and different amplitudes, and the problem of roadbed settlement caused by crack development, material fatigue and the like of the roadbed and pavement material can be found in time; therefore, the long-term influence of vibration on the pavement and roadbed structure is accurately evaluated.

Description

Technical Field

[0001] This utility model relates to the field of roadbed and pavement technology, specifically an improved roadbed and pavement design experimental device. Background Technology

[0002] With the development of modern transportation, the diversity of vehicle loads, speeds, and road conditions has had a significant impact on the service life and safety of roads. In particular, the impact of vibration on roadbeds and pavements is becoming increasingly prominent on highways, urban roads, and roads under special environmental conditions. Vibration loads not only exert direct pressure on the pavement when traffic vehicles pass by, but may also cause problems such as roadbed settlement, crack development, and material fatigue.

[0003] While existing roadbed and pavement design experimental devices can simulate some static loads, they are still insufficient for simulating complex dynamic vibration loads. Traditional roadbed and pavement test equipment often cannot fully cover the distance of roadbed settlement under different frequencies, temperatures, and amplitudes when simulating vibration effects caused by traffic loads, resulting in the inability to accurately assess the long-term impact of vibration on pavement and roadbed structures.

[0004] Therefore, those skilled in the art have provided an improved experimental apparatus for subgrade and pavement design to address the problems mentioned in the background section. Utility Model Content

[0005] The purpose of this invention is to provide an improved experimental device for roadbed and pavement design to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An improved experimental device for roadbed and pavement design includes an experimental chamber. A vibration monitoring mechanism is installed both inside and outside the experimental chamber. The vibration monitoring mechanism includes two sealed, insulated doors, one of which has a controller body fixedly connected to its front. A semiconductor cooling chip is fixedly connected to the inner wall of the experimental chamber. A carrying plate is installed inside the experimental chamber, and a storage box is fixedly connected to the upper surface of the carrying plate. Two sets of bases are fixedly connected to the inner bottom wall of the experimental chamber. A spring is fixedly connected to the outer surface of each base, and a top seat is fixedly connected to the top of each spring. The top of each top seat is fixedly connected to the bottom surface of the carrying plate. A heating plate and a temperature sensor are fixedly connected to the inner side walls of the experimental chamber. Several identical infrared ranging sensors are fixedly connected to the inner top wall of the experimental chamber. A vibration motor is fixedly connected to the bottom surface of the carrying plate.

[0008] As a further improvement of this utility model: the back of each of the sealed and insulated doors is hinged to the inner wall of the experimental chamber, and the front of each of the sealed and insulated doors is fixedly connected with a handle.

[0009] As a further improvement of this utility model: a protective shell is fixedly connected to the outer surface of the controller body, and the back of the protective shell is fixedly connected to the front of the sealed and insulated door.

[0010] As a further improvement of this utility model: two sets of support rods are fixedly connected to the bottom surface of the experimental box, and a protective pad is fixedly connected to the bottom end of each support rod.

[0011] As a further improvement of this utility model: each of the infrared ranging sensors has a fixing ring fixedly connected to its outer surface, and the top of each fixing ring is fixedly connected to the inner wall of the experimental chamber.

[0012] As a further improvement of this utility model: the inner sidewall of the experimental box has two sliding grooves, the interior of each sliding groove is slidably connected to the outer surface of the carrying plate, and the outer surface of the storage box is fixedly connected to a fixing frame, the bottom surface of the fixing frame being fixedly connected to the upper surface of the carrying plate.

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

[0014] This invention, by incorporating a vibration monitoring mechanism, enables experiments to be conducted on roadbed and pavement materials within a storage box under different temperatures, frequencies, and amplitudes. It allows for the timely detection of roadbed settlement issues caused by crack development and material fatigue, thus accurately assessing the long-term impact of vibration on the pavement and roadbed structure. The system utilizes a vibration motor, base, spring, storage box, top seat, and carrying plate to vibrate the roadbed and pavement materials within the storage box at different frequencies and amplitudes. A heating plate, temperature sensor, and semiconductor cooling chip enable precise measurement and control of the temperature within the experimental chamber. Furthermore, an infrared distance sensor allows for precise measurement of the settlement distance of the roadbed and pavement materials, facilitating accurate assessment of the material's performance in this experiment. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of an experimental device for an improved roadbed and pavement design;

[0016] Figure 2 A three-dimensional structural diagram of a sealed and insulated door in an experimental device for an improved roadbed and pavement design;

[0017] Figure 3 A three-dimensional structural diagram of a storage box in an experimental device for an improved roadbed and pavement design;

[0018] Figure 4 A cross-sectional view of the test chamber in an improved roadbed and pavement design experimental setup;

[0019] Figure 5 A schematic diagram of the three-dimensional structure of the loading plate in an experimental device for an improved roadbed and pavement design;

[0020] Figure 6 A schematic diagram of the three-dimensional structure of a spring in an experimental device for an improved roadbed and pavement design.

[0021] In the diagram: 1. Experimental chamber; 2. Vibration monitoring mechanism; 201. Sealed and insulated door; 202. Controller body; 203. Semiconductor cooling chip; 204. Storage box; 205. Base; 206. Spring; 207. Top seat; 208. Loading plate; 209. Vibration motor; 210. Heating plate; 211. Infrared distance sensor; 212. Temperature sensor; 3. Protective shell; 4. Handle; 5. Support rod; 6. Protective pad; 7. Fixing frame; 8. Slide groove; 9. Fixing ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1

[0024] Please see Figure 1-6 An improved experimental device for roadbed and pavement design includes an experimental chamber 1. A vibration monitoring mechanism 2 is installed both inside and outside the experimental chamber 1. The vibration monitoring mechanism 2 includes two sealed and insulated doors 201. A controller body 202 is fixedly connected to the front of one of the sealed and insulated doors 201. The back of each sealed and insulated door 201 is hinged to the inner wall of the experimental chamber 1. A handle 4 is fixedly connected to the front of each sealed and insulated door 201. The handle 4 facilitates the opening and closing of the sealed and insulated door 201 by the staff, thereby improving the effectiveness of the device.

[0025] A semiconductor cooling chip 203 is fixedly connected to the inner wall of the experimental chamber 1. A carrying plate 208 is set inside the experimental chamber 1. Two sliding grooves 8 are opened on the inner side wall of the experimental chamber 1. The interior of each sliding groove 8 is slidably connected to the outer surface of the carrying plate 208. A fixing frame 7 is fixedly connected to the outer surface of the storage box 204. The bottom surface of the fixing frame 7 is fixedly connected to the upper surface of the carrying plate 208. The fixing frame 7 can fix the storage box 204 to avoid fluctuation during use, which would affect the measurement effect of the device. The sliding grooves 8 facilitate the smooth up-and-down sliding of the carrying plate 208, thereby ensuring the stability of the carrying plate 208 in use.

[0026] A storage box 204 is fixedly connected to the upper surface of the carrier plate 208. Two sets of bases 205 are fixedly connected to the inner bottom wall of the experimental chamber 1. Two sets of support rods 5 are fixedly connected to the bottom surface of the experimental chamber 1. A protective pad 6 is fixedly connected to the bottom end of each support rod 5. The combination of the support rods 5 and the protective pads 6 can support and fix the experimental chamber 1, preventing a large amount of heat from the bottom heat dissipation end of the thermoelectric cooler 203 from being unable to dissipate and causing damage to the device. The thermoelectric cooler is composed of alternating N-type and P-type thermoelectric material particles, conductive metal electrodes, and an insulating ceramic substrate. Its working principle is based on the Peltier effect: when a direct current passes through a semiconductor thermocouple pair, electrons and holes undergo energy level transitions at the conductor junction, absorbing heat to form a cold end, while releasing heat on the other side to form a hot end, thus achieving temperature difference cooling. The temperature of the cold end can be reduced to below the ambient temperature, while the hot end needs to dissipate heat through a heat sink. The whole structure has no moving parts and is compact. It is often used in scenarios such as precise temperature control of electronic devices, miniature refrigerators, and laser heat dissipation.

[0027] Example 2

[0028] Please see Figure 1-6 Each base 205 has a spring 206 fixedly connected to its outer surface, and a top seat 207 fixedly connected to the top of each spring 206. The top of each top seat 207 is fixedly connected to the bottom surface of the carrying plate 208. A heating plate 210 and a temperature sensor 212 are fixedly connected to the inner side wall of the experimental chamber 1. Several identical infrared ranging sensors 211 are fixedly connected to the inner top wall of the experimental chamber 1. A fixing ring 9 is fixedly connected to the outer surface of each infrared ranging sensor 211, and the top of each fixing ring 9 is fixedly connected to the inner wall of the experimental chamber 1. The fixing ring 9 can be used to reinforce the infrared ranging sensor 211 and prevent the infrared ranging sensor 211 from shaking during use.

[0029] A vibration motor 209 is fixedly connected to the bottom surface of the loading plate 208, and a protective shell 3 is fixedly connected to the outer surface of the controller body 202. The back of the protective shell 3 is fixedly connected to the front of the sealed and insulated door 201. The protective shell 3 can be used to fix the controller body 202 and prevent it from falling off during use. The controller consists of two parts: hardware and software. The hardware mainly includes a central processing unit (CPU) for calculation, input / output (I / O) interfaces for connecting sensors and actuators, memory for storing programs and data, as well as power supply and communication modules. The software includes control algorithm programs, real-time operating systems such as RTOS, and human-machine interfaces. Together, they ensure precise and efficient system control, and are widely used in fields such as industrial automation, smart homes, and automotive electronics. A controller is a core device that regulates system operation by processing input signals in real time and generating control commands. Its working principle can be summarized as follows: First, it collects signals from sensors or external inputs, such as temperature and speed, and compares them with preset target values ​​to calculate the deviation; then, it uses built-in algorithms such as PID control and logical judgment to analyze the deviation and generate adjustment commands; finally, it drives actuators such as motors and valves through the output interface to adjust the system state, while continuously monitoring the effect through closed-loop feedback to achieve dynamic stability. The controller can control the electrical components of this technical solution.

[0030] Example 3

[0031] The working principle of this utility model is as follows: During use, the operator places the roadbed / pavement material to be tested inside the storage box 204. Then, the controller body 202, infrared ranging sensor 211, heating plate 210, temperature sensor 212, semiconductor cooling chip 203, and vibration motor 209 are connected to the power supply. The operator then closes the sealed insulation door 201. The temperature sensor 212 measures the initial temperature inside the experimental chamber 1, and the controller body 202 controls the infrared ranging sensor 211 to operate. The infrared emitter inside the infrared ranging sensor 211 continuously emits infrared signals towards the surface of the roadbed / pavement material. These infrared signals are reflected by the roadbed / pavement material and received by the receiver inside the infrared ranging sensor 211. Through the operation of multiple infrared ranging sensors 211, the distance from multiple measurement points on the roadbed / pavement material to the infrared ranging sensor 211 can be initially measured. Then, the operator controls the heating plate 210 or half-heating plate 211 according to the experimental needs. The conductor cooling element 203 operates to heat or cool the temperature inside the experimental chamber 1. The controller body 202 controls the vibration motor 209 to operate. The vibration motor 209 has an adjustable eccentric block installed at each end of the rotor shaft. The centrifugal force generated by the high-speed rotation of the shaft and eccentric blocks generates the excitation force of the vibration motor 209. This excitation force drives the carrying plate 208, the storage box 204 on the carrying plate 208, and the roadbed / pavement material in the storage box 204 to vibrate up and down along the inside of the slide groove 8 under the buffer structure formed by the base 205, spring 206, and top seat 207. During the experiment, the vibration frequency of the vibration motor 209 can be controlled, and the amplitude of the experimental vibration can be adjusted. This device allows for vibration tests on roadbed / pavement materials at different temperatures, frequencies, and amplitudes. Through vibration tests, problems such as roadbed settlement caused by crack development and material fatigue can be detected in a timely manner, thereby accurately assessing the long-term impact of vibration on the pavement and roadbed structure, and improving the effectiveness of the device.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An improved experimental apparatus for roadbed and pavement design, comprising an experimental chamber (1), characterized in that: A vibration monitoring mechanism (2) is provided both inside and outside the experimental chamber (1); the vibration monitoring mechanism (2) includes two sealed and insulated doors (201), one of which has a controller body (202) fixedly connected to its front side; a semiconductor cooling chip (203) is fixedly connected to the inner wall of the experimental chamber (1); a carrying plate (208) is provided inside the experimental chamber (1); a storage box (204) is fixedly connected to the upper surface of the carrying plate (208); and two sets of bases are fixedly connected to the inner bottom wall of the experimental chamber (1). 205), each of the bases (205) has a spring (206) fixedly connected to its outer surface, each of the springs (206) has a top seat (207) fixedly connected to its top, each of the top seats (207) has its top end fixedly connected to the bottom surface of the carrying plate (208), the inner sidewall of the experimental box (1) has a heating plate (210) and a temperature sensor (212) fixedly connected to its inner sidewall, the inner top wall of the experimental box (1) has several identical infrared ranging sensors (211) fixedly connected to its inner topwall, and the bottom surface of the carrying plate (208) has a vibration motor (209) fixedly connected to its bottom surface.

2. The improved roadbed and pavement design experimental device according to claim 1, characterized in that: The back of each of the sealed and insulated doors (201) is hinged to the inner wall of the experimental chamber (1), and a handle (4) is fixedly connected to the front of each of the sealed and insulated doors (201).

3. The improved roadbed and pavement design experimental device according to claim 1, characterized in that: The outer surface of the controller body (202) is fixedly connected to a protective shell (3), and the back of the protective shell (3) is fixedly connected to the front of the sealed heat-insulating door (201).

4. The improved roadbed and pavement design experimental device according to claim 1, characterized in that: The bottom surface of the experimental box (1) is fixedly connected to two sets of support rods (5), and the bottom end of each support rod (5) is fixedly connected to a protective pad (6).

5. The improved roadbed and pavement design experimental device according to claim 1, characterized in that: Each infrared ranging sensor (211) has a fixed ring (9) fixedly connected to its outer surface, and the top of each fixed ring (9) is fixedly connected to the inner wall of the experimental box (1).

6. The improved roadbed and pavement design experimental device according to claim 1, characterized in that: The inner wall of the experimental box (1) has two sliding grooves (8), and the interior of each sliding groove (8) is slidably connected to the outer surface of the carrying plate (208). The outer surface of the storage box (204) is fixedly connected to a fixing frame (7), and the bottom surface of the fixing frame (7) is fixedly connected to the upper surface of the carrying plate (208).

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