Road damage resistance comprehensive experiment device

Abstract

The utility model relates to a road anti-damage comprehensive experiment device which comprises a walking chassis, a screw-down mechanism, detection tires, a wheel suspension, a jet head, a jet pump, an irradiation heating structure and a driving circuit, the walking chassis is provided with at least one adjusting groove, each adjusting groove is internally provided with the detection tire, and the detection tires are connected with the screw-down mechanism through the wheel suspension. The screw-down mechanism is further connected with the walking chassis, the jet head and the irradiation heating structure are connected with the lower end face of the walking chassis, the jet head is communicated with the jet pump, and the drive circuit is connected with the outer side face of the walking chassis and electrically connected with the walking chassis, the screw-down mechanism, the rotary drive mechanism, the water storage tank, the jet pump, the irradiation heating structure and the temperature sensor. The road quality detection device can be effectively matched with existing traction equipment for use, and meets the requirements of detecting the compression resistance and the structural strength of roads with various structures at the same time, so that the precision and the efficiency of the road quality detection operation are effectively improved.

Description

Technical Field

[0001] The utility model relates to a comprehensive road damage resistance experimental device, belonging to the technical field of road construction equipment. Background Art

[0002] During the use of roads, factors such as precipitation, freezing, high temperature, heavy vehicle pressure, metal friction and scratching can easily damage the road structure, thus seriously affecting the service life and performance of the road. As for the detection of road damage caused by external environmental factors, there is currently no professional detection equipment or means. We can only rely on fixed-point sampling of road subgrade, surface layer and other structures, and then use presses and other equipment to perform mechanical testing on the sampled samples to indirectly judge the road's damage resistance. However, this traditional method often cannot effectively simulate the actual natural environmental factors and load factors received during road operation, resulting in a large difference between the current road damage resistance detection results and the actual road use situation.

[0003] Therefore, based on the defects in the above-mentioned prior art, the existing problems are studied and improved, and a comprehensive road damage resistance experimental device is provided, aiming to solve some existing equipment problems through this device. Summary of the invention

[0004] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A comprehensive road damage resistance experimental device includes a walking chassis, a pressing mechanism, a test tire, a wheel suspension, a rotating drive mechanism, a water storage tank, a jet head, a jet pump, a radiation heating structure, a temperature sensor, and a driving circuit. The walking chassis is provided with at least one adjustment slot, and the axis of the adjustment slot is parallel to the axis of the walking chassis. At the same time, at least one test tire is provided in each adjustment slot. The test tire is connected to the pressing mechanism through the wheel suspension, and the pressing mechanism is also connected to the walking chassis. The axis of the pressing mechanism intersects with the axis of the test tire and the horizontal plane and is vertically distributed. At the same time, the rotating axis of the test tire is vertically distributed with the axis of the walking chassis and is connected to the rotating drive mechanism through a transmission mechanism. There are a plurality of jet heads and a radiation heating structure, which are connected to the lower end surface of the walking chassis and surround the The midpoint of the walking chassis is distributed in a rectangular array structure, wherein the axis of each spray head intersects with the horizontal plane and forms an angle of 10°-30°. The spray heads are connected in parallel and connected to the jet pump through a guide pipe. The jet pump is connected to the water tank through the guide pipe, and the jet pump, the water tank and the rotary drive mechanism are all connected to the upper end surface of the walking chassis. There are at least two temperature sensors, at least one of which is connected to the lower end surface of the sending chassis, and its detection axis is vertically distributed to the lower end surface of the walking chassis. Another at least one temperature sensor is connected to the wall of the regulating groove, and its axis intersects with the sidewall of the detection tire. The drive circuit is connected to the outer side of the walking chassis, and is electrically connected to the walking chassis, the pressing mechanism, the rotary drive mechanism, the water tank, the jet pump, the irradiation heating structure, and the temperature sensor respectively.

[0006] Furthermore, the pressing mechanism includes a carrying frame, a lifting drive mechanism, a heavy-load guide rail, a slide, and a pressure sensor, wherein the carrying frame is a frame structure with a rectangular axial cross-section, the heavy-load guide rail is connected to the carrying frame and is distributed parallel to the axis of the carrying frame, the slide is embedded in the heavy-load guide rail, and is slidingly connected to the heavy-load guide rail through the lifting drive mechanism, the slide is also connected to the upper end surface of the wheel suspension, and a pressure sensor is arranged at the connection position between the slide and the wheel suspension, and the lifting drive mechanism and the pressure sensor are both electrically connected to the drive circuit.

[0007] Furthermore, the bearing frame and the walking chassis at the wall of the adjusting groove are hinged by a flip mechanism, and the axis of the bearing frame and the upper end surface of the walking chassis form an angle of 45°-120°, and the flip mechanism is electrically connected to the driving circuit.

[0008] Further, the water storage tank includes a main tank body, a chemical agent auxiliary tank body, a heat exchanger, a refrigeration mechanism, a temperature sensor, a liquid level gauge, a three-way valve, and a metering pump. The main tank body and the chemical agent auxiliary tank body are both closed cavity structures with axes perpendicular to the upper end surface of the walking chassis. The main tank body is connected to the upper end surface of the walking chassis, and the chemical agent auxiliary tank body is connected to the outer side surface of the main tank body. An inlet and a discharge port are respectively provided on the upper end surfaces of the main tank body and the chemical agent auxiliary tank body. The inlet of the main tank body is communicated with the three-way valve through a diversion pipe. At the same time, one end of the three-way valve is communicated with the metering pump through a diversion pipe. The metering pump is communicated with the discharge port of the chemical agent auxiliary tank body through a diversion pipe. The discharge port of the main tank body is communicated with a jet pump through a diversion pipe. At the same time, a temperature sensor and a liquid level gauge are provided in both the main tank body and the chemical agent auxiliary tank body. In addition, at least one heat exchanger is further provided in the main tank body. The heat exchanger is communicated with the refrigeration mechanism. The refrigeration mechanism is connected to the walking chassis. The refrigeration mechanism, the temperature sensor, the liquid level gauge, the three-way valve, and the metering pump are all electrically connected to the drive circuit.

[0009] Further, a traction mechanism coaxial with the walking chassis is provided on the front end surface of the walking chassis. A plurality of at least two hard detection mechanisms are provided on the rear end surface of the walking chassis, and the hard detection mechanisms are evenly distributed along the axis direction of the rear end surface of the walking chassis. The hard detection mechanism includes a scraper, a flipping robotic arm, a pressure sensor, a flipping mechanism, and a bearing groove. The bearing groove is a groove-shaped structure with a cross-section in the shape of "凵", covering the outside of the rear end surface of the walking chassis. At the same time, the outer side surface of the bearing groove is hinged to the upper end surface of the flipping robotic arm through the flipping mechanism. The flipping robotic arm rotates within a range of 0° - 120° through the flipping mechanism, and its axis intersects with the upper end surface of the walking chassis. The lower end surface of the flipping robotic arm is hinged to the scraper. The scraper is a plate-shaped structure in the shape of an isosceles trapezoid, with an angle of 0° - 120° between its plate surface and the lower end surface of the walking chassis, and the width of its lower end surface is 10% - 50% of the width of its upper end surface. At the same time, a pressure sensor is further provided on the flipping robotic arm, and the pressure sensor is located at the connection position between the flipping robotic arm and the scraper. At the same time, the flipping robotic arm, the pressure sensor, and the flipping mechanism are all electrically connected to the drive circuit.

[0010] Further, the drive circuit is a circuit system based on programmable control, and a serial communication circuit is further provided in the drive circuit.

[0011] The utility model has a simple structure and good versatility, can be effectively used in supporting with existing traction equipment, and can simultaneously meet the needs of detecting the compressive resistance and structural strength of various structural roads. At the same time, during the detection operation, the simulation of various extreme environments can be carried out, so as to effectively improve the accuracy and efficiency of the road quality detection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following will describe the present utility model in detail with reference to the drawings and specific embodiments;

[0013] Figure 1 It is a schematic diagram of the structure of the utility model. DETAILED DESCRIPTION

[0014] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to construct, the present invention is further described below in conjunction with specific implementation methods.

[0015] like Figure 1 As shown, a comprehensive road damage resistance experimental device includes a walking chassis 1, a pressing mechanism 2, a test tire 3, a wheel suspension 4, a rotating drive mechanism 5, a water storage tank 6, a jet head 7, a jet pump 8, a radiation heating structure 9, a temperature sensor 10, and a driving circuit 11. The walking chassis 1 is provided with at least one adjustment slot 12, and the axis of the adjustment slot 12 is parallel to the axis direction of the walking chassis 1. At the same time, at least one test tire 3 is arranged in each adjustment slot 12. The test tire 3 is connected to the pressing mechanism 2 through the wheel suspension 4, and the pressing mechanism 2 is also connected to the walking chassis 1. The axis of the pressing mechanism 2 intersects with the axis of the test tire 3 and the horizontal plane and is vertically distributed. At the same time, the rotating axis of the test tire 3 is vertically distributed with the axis of the walking chassis 1 and is connected to the rotating drive mechanism 5 through a transmission mechanism. There are a plurality of jet heads 7 and a radiation heating structure 9, which are connected to the lower end surface of the walking chassis 1. And it is distributed in a rectangular array structure around the midpoint of the walking chassis 1, wherein the axis of each spray head 7 intersects with the horizontal plane and forms an angle of 10°-30°, the spray heads 7 are connected in parallel, and are connected to the jet pump 8 through a guide pipe, the jet pump 8 is connected to the water tank 6 through the guide pipe, and the jet pump 8, the water tank 6 and the rotating drive mechanism 5 are all connected to the upper end surface of the walking chassis 1, there are at least two temperature sensors 10, at least one of which is connected to the lower end surface of the sending chassis 1, and its detection axis is vertically distributed to the lower end surface of the walking chassis 1, and at least one other temperature sensor 10 is connected to the groove wall of the adjustment groove 12, and its axis intersects with the sidewall of the detection tire 3, the drive circuit 11 is connected to the outer side of the walking chassis 1, and is respectively electrically connected to the walking chassis 1, the pressing mechanism 2, the rotating drive mechanism 5, the water tank 6, the jet pump 7, the irradiation heating structure 9, and the temperature sensor 10.

[0016] In this embodiment, the pressing mechanism 2 includes a carrying frame 21, a lifting drive mechanism 22, a heavy-load guide rail 23, a slide 24, and a pressure sensor 25, wherein the carrying frame 21 is a frame structure with a rectangular axial cross-section, the heavy-load guide rail 23 is connected to the carrying frame 21, and is distributed parallel to the axis of the carrying frame 21, the slide 24 is embedded in the heavy-load guide rail 23, and is slidingly connected to the heavy-load guide rail 23 through the lifting drive mechanism 22, the slide 24 is also connected to the upper end surface of the wheel suspension 4, and a pressure sensor 25 is provided at the connection position between the slide 24 and the wheel suspension 4, and the lifting drive mechanism 22 and the pressure sensor 25 are both electrically connected to the drive circuit 11.

[0017] The working height of the detection tire can be adjusted through the set lifting drive mechanism, and when the road surface is being inspected, the detection tire is driven downward by the lifting drive mechanism and is against the road surface to be inspected. At the same time, the pressure of the detection tire on the road surface is adjusted by the downward stroke of the lifting drive mechanism, thereby satisfying the simulation of the impact of different heavy-loaded vehicles on the road surface.

[0018] At the same time, the supporting frame 21 is hinged to the traveling chassis 1 at the wall of the adjusting slot 12 through a flipping mechanism 26, and the axis of the supporting frame 21 forms an angle of 45°-120° with the upper end surface of the traveling chassis 1, and the flipping mechanism 26 is electrically connected to the driving circuit 11.

[0019] It is emphasized that the water storage tank 6 includes a main tank body 61, a medicine auxiliary tank body 62, a heat exchanger 63, a refrigeration mechanism 64, a temperature sensor 10, a liquid level meter 65, a three-way valve 66 and a metering pump 67, wherein the main tank body 61 and the medicine auxiliary tank body 62 are both closed cavity structures with axes perpendicular to the upper end surface of the walking chassis 1, and the main tank body 61 is connected to the upper end surface of the walking chassis 1, and the medicine auxiliary tank body 62 is connected to the outer side of the main tank body 61, and the upper end surfaces of the main tank body 61 and the medicine auxiliary tank body 62 are respectively provided with a feed port 68 and a discharge port 69, wherein the feed port 68 of the main tank body 61 is connected to the three-way valve 66 through a guide pipe, and the three-way valve 66 is connected to the upper end surface of the walking chassis 1. One end of the valve 66 is connected to the metering pump 67 through a guide tube, and the metering pump 67 is connected to the discharge port 69 of the auxiliary medicine tank 62 through the guide tube, and the discharge port 69 of the main tank 61 is connected to the jet pump 8 through the guide tube. At the same time, the main tank 61 and the auxiliary medicine tank 62 are each provided with a temperature sensor 10 and a liquid level gauge 65; in addition, at least one heat exchanger 63 is provided in the main tank 61, and the heat exchanger 63 is connected to the refrigeration mechanism 64, and the refrigeration mechanism 64 is connected to the walking chassis 1, and the refrigeration mechanism 64, the temperature sensor 10, the liquid level gauge 65, the three-way valve 66 and the metering pump 67 are all electrically connected to the drive circuit 11.

[0020] During operation, experimental water is set in the main tank, and the water is pressurized by a jet pump and then sprayed onto the road surface through a sprinkler head to test the road surface's water-blocking, drainage and water flow impact resistance. At the same time, the temperature of the spray water is adjusted by a refrigeration mechanism to meet the damage to the road surface caused by low temperature precipitation in winter. At the same time, the experimental chemicals stored in the auxiliary tank are used to adjust the pH value of the spray water, so as to simulate the damage to the road surface caused by abnormal environments such as acid rain.

[0021] It should be noted that a traction mechanism 13 distributed coaxially with it is provided on the front end face of the walking chassis 1, and a number of at least two hard detection mechanisms 14 are provided on the rear end face of the walking chassis. Moreover, the hard detection mechanisms 14 are evenly distributed along the axis direction of the rear end face of the walking chassis 1. The hard detection mechanism 14 includes a scraper 142, a flipping robotic arm 143, a pressure sensor 25, a flipping mechanism 26 and a bearing groove 141. The bearing groove 141 is a trough-shaped structure with a "U"-shaped cross-section, which is wrapped outside the rear end face of the walking chassis 1. At the same time, the outer side surface of the bearing groove 141 is hinged to the upper end face of the flipping robotic arm 143 through the flipping mechanism 26. The flipping robotic arm 143 rotates within a range of 0° - 120° through the flipping mechanism 26, and its axis intersects with the upper end face of the walking chassis 1. The lower end face of the flipping robotic arm 143 is hinged to the scraper 142. The scraper 142 is a plate-shaped structure in an isosceles trapezoid shape, and the plate surface forms an angle of 0° - 120° with the lower end face of the walking chassis 1, and the width of its lower end face is 10% - 50% of the width of its upper end face. At the same time, a pressure sensor 25 is additionally provided on the flipping robotic arm 143, and the pressure sensor 25 is located at the connection position between the flipping robotic arm 143 and the scraper 142. At the same time, the flipping robotic arm 143, the pressure sensor 25, and the flipping mechanism 26 are all electrically connected to the drive circuit 11.

[0022] The provided traction mechanism enables the walking chassis to be used in supporting with an external towing vehicle. At the same time, during the operation of the hard detection mechanism provided on the rear end face of the walking chassis, by flipping to adjust the position of the scraper, the scraper is directly in contact with the road surface, and the pressure between the scraper and the road is adjusted, so as to achieve the ability of the road to resist mechanical wear and scratches.

[0023] In this embodiment, the drive circuit 11 is a circuit system based on programmable control, and a serial communication circuit is additionally provided in the drive circuit.

[0024] In the specific implementation of this new type, first, the walking chassis, the pressing mechanism, the detection tire, the wheel suspension, the rotary drive mechanism, the water storage tank, the spray head, the jet pump, the irradiation heating structure, the temperature sensor, and the drive circuit that make up this new type are assembled, and experimental water is preset in the water storage tank. Finally, the walking chassis is connected to an external towing vehicle to complete the equipment assembly.

[0025] During the process, the walking chassis is driven by the towing vehicle to run along the road to be detected. And during the running process, the spray head, the irradiation heating structure, the pressing mechanism, and the detection tire can run synchronously, so as to meet the need for comprehensive performance detection of the road.

[0026] Adjust the pressure of the detection tire on the road surface through the pressing mechanism, so as to simulate the damage caused by heavy load to the road;

[0027] Through the cooperation of the jet pump and the sprinkler head, high-pressure water flow can impact the road surface, meeting the needs of testing the road's drainage performance, resistance to water flow impact, anti-seepage ability and braking ability under water accumulation conditions.

[0028] By setting up the radiation heating structure, the need for testing the high temperature resistance of the road can be met.

[0029] In addition, by testing the tires, sprinkler heads and radiant heating structures at the same time, the need for comprehensive road performance testing under complex conditions can be effectively met.

[0030] The utility model has a simple structure and good versatility. It can be effectively used in conjunction with existing traction equipment and can simultaneously meet the needs of pressure resistance and structural strength testing of various structural roads. During the testing process, it can also simulate various extreme environments, thereby effectively improving the accuracy and efficiency of road quality testing operations.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A comprehensive road damage resistance test device, characterized in that: The road damage resistance comprehensive experimental device includes a walking chassis, a pressing mechanism, a test tire, a wheel suspension, a rotating drive mechanism, a water storage tank, a jet head, a jet pump, a radiation heating structure, a temperature sensor, and a driving circuit. The walking chassis is provided with at least one adjustment slot, and the axis of the adjustment slot is parallel to the axis of the walking chassis. At the same time, at least one test tire is provided in each adjustment slot. The test tire is connected to the pressing mechanism through the wheel suspension, and the pressing mechanism is also connected to the walking chassis, and the axis of the pressing mechanism intersects with the axis of the test tire and the horizontal plane and is vertically distributed. At the same time, the rotating axis of the test tire is vertically distributed with the axis of the walking chassis, and is connected to the rotating drive mechanism through a transmission mechanism. There are a plurality of jet heads and a radiation heating structure, which are connected to the lower end surface of the walking chassis and are surrounded by A rectangular array structure is distributed around the midpoint of the walking chassis, wherein the axis of each spray head intersects with the horizontal plane and forms an angle of 10°-30°, the spray heads are connected in parallel and connected to the jet pump through a guide pipe, the jet pump is connected to the water tank through the guide pipe, and the jet pump, the water tank and the rotary drive mechanism are all connected to the upper end surface of the walking chassis, there are at least two temperature sensors, at least one of which is connected to the lower end surface of the sending chassis, and its detection axis is vertically distributed to the lower end surface of the walking chassis, and at least one other temperature sensor is connected to the wall of the regulating groove, and its axis intersects with the sidewall of the detection tire, the drive circuit is connected to the outer side of the walking chassis, and is respectively electrically connected to the walking chassis, the pressing mechanism, the rotary drive mechanism, the water tank, the jet pump, the irradiation heating structure, and the temperature sensor.

2. A road damage resistance comprehensive test device according to claim 1, characterized in that: The pressing mechanism includes a carrying frame, a lifting drive mechanism, a heavy-load guide rail, a slide, and a pressure sensor, wherein the carrying frame is a frame structure with a rectangular axial cross-section, the heavy-load guide rail is connected to the carrying frame and is distributed parallel to the axis of the carrying frame, the slide is embedded in the heavy-load guide rail, and is slidably connected to the heavy-load guide rail through the lifting drive mechanism, the slide is also connected to the upper end surface of the wheel suspension, and a pressure sensor is arranged at the connection position between the slide and the wheel suspension, and the lifting drive mechanism and the pressure sensor are both electrically connected to the drive circuit.

3. A road damage resistance comprehensive experimental device according to claim 2, characterized in that: The bearing frame and the walking chassis at the adjusting groove wall are hinged through a flip mechanism, and the axis of the bearing frame and the upper end surface of the walking chassis form an angle of 45°-120°, and the flip mechanism is electrically connected to the driving circuit.

4. A road damage resistance comprehensive test device according to claim 1, characterized in that: The water storage tank includes a main tank body, a chemical agent auxiliary tank body, a heat exchanger, a refrigeration mechanism, a temperature sensor, a liquid level gauge, a three-way valve and a metering pump. The main tank body and the chemical agent auxiliary tank body are both closed cavity structures with axes perpendicular to the upper end face of the walking chassis. The main tank body is connected to the upper end face of the walking chassis, and the chemical agent auxiliary tank body is connected to the outer side of the main tank body. An inlet and a discharge port are respectively provided on the upper end faces of the main tank body and the chemical agent auxiliary tank body. The inlet of the main tank body is communicated with the three-way valve through a diversion pipe. One end of the three-way valve is communicated with the metering pump through a diversion pipe. The metering pump is communicated with the discharge port of the chemical agent auxiliary tank body through a diversion pipe. The discharge port of the main tank body is communicated with a jet pump through a diversion pipe. A temperature sensor and a liquid level gauge are respectively provided on the main tank body and the chemical agent auxiliary tank body. In addition, at least one heat exchanger is further provided in the main tank body. The heat exchanger is communicated with the refrigeration mechanism. The refrigeration mechanism is connected to the walking chassis. The refrigeration mechanism, the temperature sensor, the liquid level gauge, the three-way valve and the metering pump are all electrically connected to a drive circuit.

5. The comprehensive road damage resistance test device according to claim 1 is characterized by: A traction mechanism coaxial with it is provided on the front end face of the walking chassis. A plurality of at least two hard detection mechanisms are provided on the rear end face of the walking chassis, and the hard detection mechanisms are evenly distributed along the axis direction of the rear end face of the walking chassis. The hard detection mechanism includes a scraper, a flipping robotic arm, a pressure sensor, a flipping mechanism and a carrying groove. The carrying groove is a trough-shaped structure with a "凵" - shaped cross section, covering the outer side of the rear end face of the walking chassis. At the same time, the outer side of the carrying groove is hinged to the upper end face of the flipping robotic arm through the flipping mechanism. The flipping robotic arm rotates within a range of 0° - 120° through the flipping mechanism, and its axis intersects with the upper end face of the walking chassis. The lower end face of the flipping robotic arm is hinged to the scraper. The scraper is a plate-shaped structure in an isosceles trapezoid shape, with an angle of 0° - 120° between its plate surface and the lower end face of the walking chassis, and the width of its lower end face is 10% - 50% of the width of its upper end face. At the same time, a pressure sensor is further provided on the flipping robotic arm, and the pressure sensor is located at the connection position between the flipping robotic arm and the scraper. At the same time, the flipping robotic arm, the pressure sensor and the flipping mechanism are all electrically connected to the drive circuit.

6. A road damage resistance comprehensive test device according to claim 1, characterized in that: The drive circuit is a circuit system based on programmable control, and a serial communication circuit is further provided in the drive circuit.

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