A road surface repairing device for high altitude and extremely cold regions

Abstract

The application belongs to the technical field of road surface repairing, and particularly relates to a road surface repairing device for high-altitude extremely cold areas, which comprises a road roller, a storage barrel, a heat preservation unit, a measuring unit and a discharge pipe. The measuring unit comprises a mounting frame, an air bag, an articulated frame, a metal sliding block and a pull rod. By utilizing the self-weight of the air bag and the liquid in the air bag, when the bottom of the air bag sinks into a pit, the bottom of the air bag expands and elongates to be attached to the pit, the two sides of the air bag contract, the metal sliding blocks are driven to move close to each other, the resistance value in the circuit connected with the metal rods is changed, the angle at which the valve is opened by the power supply is changed, the volume of the pit is larger, the distance between the two metal sliding blocks is smaller, the current in the circuit is larger, and the angle at which the valve is opened is larger. For a pit with a small volume, the opening angle of the valve is relatively small, and the discharge amount is small. In this way, the problem that a large amount of asphalt and gravel mixture is discharged from the storage barrel in a short time and the excess mixture is wasted or needs to be collected again can be avoided.

Description

Technical Field

[0001] This invention belongs to the field of road repair technology, specifically a road repair device for high-altitude and extremely cold regions. Background Technology

[0002] Currently, due to the unique environment of high-altitude and extremely cold regions, the size of potholes varies during road repair. The discharge port often cannot automatically adjust its flow area according to the pothole size, and the discharge port size is often constant. For smaller potholes, a large amount of asphalt and aggregate mixture is discharged in a short time, resulting in waste or needing to be collected again during road compaction. For larger potholes, the discharge time is long, delaying the subsequent paving and compaction processes. Due to the low temperature and strong winds in high-altitude and extremely cold regions, the asphalt mixture discharged into the pothole may also experience local solidification, thereby reducing the road repair effect, extending the construction period, and reducing work efficiency.

[0003] In view of this, in order to improve the above-mentioned technical problems, the present invention provides a road surface repair device for high-altitude and extremely cold regions. Summary of the Invention

[0004] The technical problem this invention aims to solve is as follows: When repairing road surfaces, potholes vary in size, and the discharge port often cannot automatically adjust its flow area according to the pothole size. The size of the discharge port is often constant. For smaller potholes, a large amount of asphalt and aggregate mixture is discharged in a short time, resulting in waste or the need for recollection of excess mixture during road compaction. For larger potholes, the discharge time is long, delaying subsequent paving and compaction processes. Due to the low temperature and strong winds in high-altitude and extremely cold regions, the asphalt mixture discharged into the pothole may also experience localized solidification, thereby reducing the road repair effect, extending the construction period, and reducing work efficiency.

[0005] This invention provides a road surface repair device for high-altitude, extremely cold regions, the device comprising:

[0006] A road roller, the road roller including a cab, a drive unit and rollers;

[0007] A storage bin, which is located on and fixedly connected to a road roller, stores a mixture of asphalt and crushed stone, etc.

[0008] A heat preservation unit is located outside the storage tank and is used to keep the mixture inside the storage tank warm.

[0009] A measuring unit, located at the bottom of the road roller and connected to the road roller, is used to measure the volume of potholes in the road surface;

[0010] The discharge pipe is located at the bottom of the storage tank and is fixedly connected to the storage tank. The discharge pipe is connected to the storage tank and a valve is fixedly connected inside the discharge pipe.

[0011] When repairing roads in high-altitude and extremely cold regions, workers activate the insulation unit to keep the asphalt and gravel mixture in the storage bins warm, preventing the asphalt in the storage bins from solidifying due to the extremely cold working environment.

[0012] Next, the workers drove the road roller to the pothole that needed to be repaired. Then, the measuring unit measured the volume of the pothole based on the change in shape and used the change in resistance value as feedback information to adjust the opening angle of the valve according to the change in resistance value, thereby adjusting the discharge volume of the discharge pipe.

[0013] For smaller potholes, the valve opening angle is smaller and the discharge volume is smaller to avoid a large amount of asphalt and gravel mixture being discharged from the storage tank in a short period of time, which would result in the excess mixture being wasted or needing to be collected again during road compaction.

[0014] For larger potholes, the valve opening angle is larger, and the discharge volume is larger. This avoids the problem of a small discharge port leading to a long discharge time. In addition, a long discharge time in the early stage will delay the subsequent paving and compaction processes. Due to the low temperature and strong wind in high-altitude and extremely cold regions, the asphalt mixture discharged from the storage tank into the pothole may experience local solidification, thereby reducing the road repair effect, prolonging the construction period and reducing work efficiency.

[0015] Preferably, the heat preservation unit includes:

[0016] A heat-insulating ring is sleeved on and fixedly connected to the storage tank. The heat-insulating ring has a hollow structure and is filled with liquid.

[0017] The heating wire is located inside the cavity of the insulation ring and is fixedly connected to the insulation ring. The heating wire is controlled by a heating device fixedly installed on the road roller.

[0018] The liquid inlet pipe is fixedly installed on the insulation ring and is connected to the insulation ring.

[0019] Preferably, the measuring unit includes:

[0020] The mounting frame is fixedly connected to the bottom surface of the road roller. The mounting frame is located on the side of the insulation ring closer to the cab. The mounting frame includes a metal rod and connecting blocks fixedly installed at both ends of the metal rod.

[0021] An airbag, which is fixedly mounted on a metal rod by a fastener, and is filled with liquid;

[0022] The airbag has two hinge frames, which are symmetrically distributed on both sides of the airbag, and the axis of symmetry of the two hinge frames coincides with the axis of the road roller.

[0023] Two metal sliders are symmetrically mounted on a metal rod. The metal sliders are slidably connected to the metal rod, and the axes of symmetry of the two metal sliders coincide with the axis of the road roller.

[0024] A pull rod is located between the hinge frame and the metal slider. One end of the pull rod is rotatably connected to the hinge frame, and the other end is rotatably connected to the metal slider.

[0025] When repairing roads in high-altitude and extremely cold regions, when the road surface is free of potholes and in good condition, the liquid fluctuation in the airbag is small, and the airbag is relatively in a balanced and static state. At this time, the two metal sliders do not slide on the metal rod, and the distance between the two metal rods is a constant initial value. At this time, the resistance value in the circuit (the circuit of power supply, metal sliders, metal rods, and valve connected in series) is the initial value A, and the valve opening angle is 0°.

[0026] At the same time, the staff started the heating equipment. The heating wire heated the liquid in the insulation ring. The liquid heated up and kept the asphalt and crushed stone mixture in the storage tank warm, preventing the asphalt in the storage tank from solidifying in the extremely cold working environment.

[0027] First, the workers drive the road roller to the pothole that needs to be repaired. Since the pothole is below the horizontal level, the liquid inside the airbag expands downwards due to its own weight. Due to the fluidity of the liquid and its own weight, the airbag gradually expands until its outer surface is in contact with the surface of the pothole. As the bottom of the airbag expands downwards, a lot of liquid flows downwards, causing the upper sides of the airbag to contract. When the sides of the airbag contract, the pull rod pulls two metal sliders closer together. When the two metal blocks are close together, the resistance value in the circuit (the circuit of power supply, metal sliders, metal rod, and valve connected in series) decreases.

[0028] If the pothole volume is larger, more liquid flows into the pothole from the airbag, resulting in greater contraction on both sides of the airbag. Consequently, the distance between the two metal sliders is smaller, and the resistance value of the metal rod connected to the circuit decreases. At this point, the resistance value is B1, A-B1=C1, and C1>0. The current in the circuit increases, and the valve opening angle is α, where α>0°. This increases the flow area of ​​the discharge port and the discharge volume, making it suitable for discharging materials from large-volume potholes. This avoids extending the time for subsequent paving and compaction processes, improving road repair efficiency and quality. It also prevents partial solidification of the asphalt that enters the pothole first, thus improving the road repair effect.

[0029] If the volume of the pit is smaller, less liquid flows into the pit from the airbag, the amount of contraction on both sides of the airbag is smaller, and the resistance value of the metal rod connected to the circuit decreases. At this time, the resistance value is B2, A-B2=C2, and C2>0, C1>C 2， When the current in the circuit increases slightly, the valve opening angle is β. At this time, α > β > 0°, the flow area of ​​the discharge port increases slightly, and the discharge volume increases slightly. This is suitable for small-volume pit discharge, avoiding large discharge volume in a short time, which is difficult to control and leads to some mixed material being wasted or needing to be collected again during the spreading and compaction process. This saves resources and improves work efficiency.

[0030] During the above detection process, the controller stores the resistance values ​​B (B1, B2). After the volume detection is completed, that is, after the airbag leaves the pit, the opening angle of the valve is adjusted according to the detected resistance value B.

[0031] Preferably, a guide tube is fixedly connected between the airbag and the heat preservation ring, and the airbag and the heat preservation ring are connected through the guide tube.

[0032] The heating wire heats the liquid inside the insulation ring. When the volume of the pit is being measured, the valve in the guide tube opens, and the high-temperature liquid enters the air bladder, which inflates. Then the valve in the guide tube closes.

[0033] During measurement, the high-temperature liquid inside the airbag flows downwards, causing the airbag to inflate and fit against the groove. When the airbag is in contact with the groove:

[0034] On the one hand, due to the low temperature in extremely cold regions, the surface temperature of potholes is also low. However, through heat transfer, the hot liquid in the airbag transfers heat to the surface of the pothole, preheating the surface of the pothole. The preheated pothole not only prevents the asphalt from solidifying quickly when it comes into contact with the pothole, but also facilitates the subsequent paving and compaction processes, thus improving the road repair effect.

[0035] It also makes the preheated potholes, as old materials, easier to bond with new materials such as asphalt and crushed stone, further improving the road repair effect;

[0036] On the other hand, due to the low temperature in the pits, and in extremely cold regions at high altitudes, the pits are prone to accumulating snow, ice, or water.

[0037] If there is snow or ice in the pothole, the airbag can help melt the snow and ice due to heat transfer, thus improving the adhesion between the old and new materials such as asphalt and gravel in the pothole later.

[0038] Meanwhile, after the snow and ice melt into water, the weight of the airbag and the liquid inside the airbag will be used to squeeze the water from the melted snow and ice out of the pit.

[0039] If there is water in the pothole, the weight of the airbag and the liquid inside it will be used to squeeze the water from the melted snow and ice out of the pothole, ensuring the adhesion of the pothole as a mixture of old and new materials such as asphalt and gravel.

[0040] Preferably, a sponge layer is fixed to the outer surface of the airbag.

[0041] If there is water in the pothole, the weight of the airbag and the liquid inside it can be used to squeeze the water from the melted snow and ice out of the pothole. At this time, since the surface of the pothole may still have a high humidity, when the airbag comes into contact with the pothole, the sponge layer on the surface of the airbag will absorb the moisture on the surface of the pothole, reducing the moisture on the surface of the pothole. The sponge is soft and deformable, and can fit into the surface of the pothole to ensure the absorption effect.

[0042] Preferably, the airbag has a mounting plate on the side near the driver's cab, a hydraulic mechanism is fixedly connected to the mounting plate, the output end of the hydraulic mechanism faces the airbag, and a storage plate is fixedly connected to the output end of the hydraulic mechanism. The storage plate has an arc-shaped structure.

[0043] When using an airbag to detect the volume of a pit, the output end of the hydraulic mechanism contracts, the receiving plate detaches from the airbag, and the liquid inside the airbag moves downward due to gravity, causing the airbag to enter the pit and fit into it.

[0044] After the pit volume is detected, the output end of the hydraulic mechanism extends and the storage plate moves toward the airbag side. Because the storage plate is arc-shaped, it lifts the airbag back and stores it when it moves toward the airbag side.

[0045] Meanwhile, when the storage plate lifts the airbag, the liquid in the airbag still exerts pressure on the storage plate due to its own weight. At this time, the sponge layer on the surface of the airbag is located between the airbag and the storage plate. Therefore, the sponge layer is squeezed, squeezing out the water absorbed by the sponge layer in the groove, which makes it easier for the sponge layer to be reused.

[0046] In addition, when the airbag is retracted, the valve in the flow tube opens. Since the airbag is compressed by the retracting plate during retraction, some of the liquid inside the airbag will enter the insulation ring. At the same time, some of the high-temperature liquid in the upper insulation ring will enter the airbag. The liquid inside the airbag that cools down due to heat transfer and the high-temperature liquid in the insulation ring will undergo a heat exchange, ensuring the temperature of the liquid inside the airbag.

[0047] Preferably, the storage hopper is equipped with a stirring shaft, which is fixedly connected to the storage hopper. Stirring blades are fixedly connected to the stirring shaft, which is driven by a power device fixedly installed on the road roller.

[0048] The power equipment drives the mixing shaft to rotate, which in turn drives the mixing blades to rotate, mixing the asphalt and crushed stone mixture in the storage tank and improving the mixing effect of asphalt and crushed stone materials.

[0049] Preferably, the roller is fitted with aprons on both sides.

[0050] Due to the strong winds and low temperatures in high-altitude and extremely cold regions, skirts are installed on both sides of the road roller to keep the asphalt warm when it enters the pothole, thus slowing down the rate at which the asphalt cools down.

[0051] At the same time, when the mixture enters the pothole, the apron can prevent windblown sand from entering the unconsolidated mixture, reducing the bonding effect and the road repair effect.

[0052] The beneficial effects of this invention are as follows:

[0053] 1. The present invention provides a road repair device for high-altitude and extremely cold regions. By utilizing the weight of the airbag and the liquid inside the airbag, when the bottom of the airbag sinks into the pothole, the bottom of the airbag expands and stretches to fit into the pothole, and the two sides of the airbag contract, causing the metal sliders to move closer to each other, changing the resistance value of the metal rod connected to the circuit, thereby changing the opening angle of the power-driven valve.

[0054] The larger the pothole volume, the smaller the distance between the two metal sliders, the larger the current in the circuit, the larger the valve opening angle, and the larger the discharge port flow rate. This avoids the discharge port being too small, which would lead to a long discharge time and delay the subsequent paving and compaction processes. Due to the low temperature and strong winds in high-altitude and extremely cold regions, the asphalt mixture discharged from the storage bucket into the pothole may experience local solidification, thereby reducing the road repair effect, extending the construction period, and reducing work efficiency.

[0055] For smaller potholes, the valve opening angle is correspondingly smaller, and the discharge volume is smaller. This avoids the storage tank discharging a large amount of asphalt and gravel mixture in a short period of time, which would result in the excess mixture being wasted or needing to be collected again during road compaction.

[0056] 2. The present invention provides a road surface repair device for high-altitude and extremely cold regions, which is configured to connect an airbag and an insulation ring via a guide pipe;

[0057] Firstly, due to the low temperature in extremely cold regions, the surface temperature of potholes is also low. Through heat transfer, the hot liquid in the airbag transfers heat to the surface of the pothole, preheating the surface. This preheating not only prevents the asphalt from solidifying rapidly upon contact with the pothole, but also facilitates subsequent paving and compaction processes, improving the road repair effect.

[0058] Secondly, it also makes the preheated potholes, as old materials, easier to bond with new materials such as asphalt and crushed stone, further improving the road repair effect;

[0059] Thirdly, if there is snow or ice in the pothole, the airbag can help melt the snow and ice due to heat transfer, thus improving the adhesion between the old and new materials such as asphalt and gravel in the pothole later.

[0060] Meanwhile, once the snow and ice melt into water, or if there is water in the pit, the weight of the airbag and the liquid inside it will push the melted snow and ice out of the pit.

[0061] 3. The present invention provides a road repair device for high-altitude and extremely cold regions. By setting a sponge layer fixed to the outer surface of the airbag, when the airbag comes into contact with the pothole, the sponge layer on the surface of the airbag absorbs the moisture on the surface of the pothole, thereby reducing the moisture on the surface of the pothole. Moreover, the sponge is soft and easily deformable, and can fit into the surface of the pothole to ensure the absorption effect.

[0062] 4. The road repair device for high-altitude and extremely cold regions provided by the present invention, by setting up a storage plate, facilitates the re-lifting and storage of the airbag;

[0063] On the other hand, when the storage board lifts the airbag, the sponge layer is squeezed by the airbag and the storage board, squeezing out the water absorbed by the sponge layer in the groove, making it easier for the sponge layer to be reused.

[0064] In addition, when the airbag is retracted, the valve in the flow tube opens, and at the same time, some of the high-temperature liquid in the upper insulation ring enters the airbag. The liquid in the airbag that cools down due to heat transfer and the high-temperature liquid in the insulation ring undergo a heat exchange, ensuring the temperature of the liquid in the airbag.

[0065] 5. The present invention provides a road repair device for high-altitude and extremely cold regions. By fixing aprons to both sides of the road roller, the device can keep the asphalt warm when it enters the pothole, thus slowing down the cooling rate of the asphalt.

[0066] At the same time, when the mixture enters the pothole, the apron can prevent windblown sand from entering the unconsolidated mixture, reducing the bonding effect and the road repair effect. Attached Figure Description

[0067] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0068] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0069] Figure 2 This is a top view of the structure of the present invention;

[0070] Figure 3 This is a front view structural diagram of the present invention;

[0071] Figure 4 This is a schematic diagram of the structure at the stirring shaft of the present invention;

[0072] Figure 5 This is a bottom-view structural diagram of the present invention;

[0073] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0074] Figure 7 This is a schematic diagram showing the state of the airbag before and after entering the pit according to the present invention;

[0075] In the picture:

[0076] 1. Roller, 101. Cab, 2. Storage tank, 3. Insulation unit, 31. Insulation ring, 32. Heating wire, 33. Liquid inlet pipe, 4. Measuring unit, 41. Mounting frame, 411. Metal rod, 42. Airbag, 43. Hinge frame, 44. Metal slider, 45. Pull rod, 5. Discharge pipe, 6. Guide pipe, 7. Mounting plate, 8. Hydraulic mechanism, 9. Storage plate, 10. Mixing shaft, 11. Mixing blade, 12. Skirt. Detailed Implementation

[0077] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0078] This invention provides a road surface repair device for high-altitude, extremely cold regions, the device comprising:

[0079] like Figures 1 to 3 As shown, the road roller 1 includes a cab 101, a drive unit, and rollers;

[0080] Storage bin 2, which is located on roller 1 and is fixedly connected to roller 1, and stores a mixture of asphalt and crushed stone, etc.

[0081] The insulation unit 3 is located outside the storage tank 2 and is used to keep the mixture inside the storage tank 2 warm.

[0082] Measurement unit 4, located at the bottom of roller 1 and connected to roller 1, is used to measure the volume of potholes in the road surface;

[0083] The discharge pipe 5 is located at the bottom of the storage tank 2 and is fixedly connected to the storage tank 2. The discharge pipe 5 is connected to the storage tank 2 and a valve is fixedly connected inside the discharge pipe 5.

[0084] By adopting the above technical solution, when repairing the road surface in high-altitude and extremely cold areas, the staff can start the insulation unit 3 to keep the asphalt and gravel mixture in the storage tank 2 warm, so as to prevent the asphalt in the storage tank 2 from solidifying due to the extremely cold working environment.

[0085] Next, the staff drove the road roller 1 to the pothole that needed to be repaired. Then, the measuring unit 4 measured the volume of the pothole based on the change in shape and used the change in resistance value as feedback information to adjust the opening angle of the valve according to the change in resistance value, thereby adjusting the discharge amount of the discharge pipe 5.

[0086] For smaller potholes, the valve opening angle is smaller and the discharge volume is smaller, so as to avoid the storage tank 2 discharging a large amount of asphalt and gravel mixture in a short period of time, which would result in the excess mixture being wasted or needing to be collected again when the road surface is compacted.

[0087] For larger potholes, the valve opening angle is larger, and the discharge volume is larger. This avoids the problem of a small discharge port leading to a long discharge time. In addition, a long discharge time in the early stage will delay the subsequent paving and compaction processes. Due to the low temperature and strong wind in high-altitude and extremely cold regions, the asphalt mixture discharged from the storage tank 2 into the pothole may experience local solidification, thereby reducing the road repair effect, prolonging the construction period and reducing work efficiency.

[0088] like Figures 1 to 7 As shown, the heat preservation unit 3 includes:

[0089] Insulation ring 31, the insulation ring 31 is sleeved on the storage tank 2 and fixedly connected to the storage tank 2, the insulation ring 31 is a hollow structure, and the insulation ring 31 is filled with liquid;

[0090] The heating wire 32 is located inside the cavity of the insulation ring 31 and is fixedly connected to the insulation ring 31. The heating wire 32 is controlled by a heating device fixedly installed on the road roller 1.

[0091] Liquid inlet pipe 33, which is fixedly installed on the heat insulation ring 31 and communicates with the heat insulation ring 31;

[0092] The measuring unit 4 includes:

[0093] Mounting frame 41 is fixedly connected to the bottom surface of roller 1. The mounting frame 41 is located on the side of insulation ring 31 near cab 101. Mounting frame 41 includes metal rod 411 and connecting blocks fixedly installed at both ends of metal rod 411.

[0094] Airbag 42, which is fixedly installed on metal rod 411 by a fastener, and is filled with liquid;

[0095] Two articulated frames 43 are provided and symmetrically distributed on both sides of the airbag 42, and the axis of symmetry of the two articulated frames 43 coincides with the axis of the road roller 1.

[0096] Two metal sliders 44 are provided and symmetrically installed on the metal rod 411. The metal sliders 44 are slidably connected to the metal rod 411, and the axis of symmetry of the two metal sliders 44 coincides with the axis of the road roller 1.

[0097] A pull rod 45 is located between the hinge frame 43 and the metal slider 44. One end of the pull rod 45 is rotatably connected to the hinge frame 43, and the other end is rotatably connected to the metal slider 44.

[0098] By adopting the above technical solution, when repairing the road surface in high-altitude and extremely cold regions, when the road surface is free of potholes and in good condition, the liquid fluctuation in the airbag 42 is small, and the airbag 42 is relatively in a balanced and static state. At this time, the two metal sliders 44 do not slide on the metal rod 411, the distance between the two metal rods 411 is a constant initial value, and the resistance value in the circuit (power supply, metal sliders 44, metal rods 411, and valve connected in series) of the metal rod 411 is the initial value A, and the valve opening angle is 0°.

[0099] At the same time, the staff started the heating equipment, and the heating wire heated the liquid in the insulation ring 31. The liquid temperature rose, which kept the asphalt and crushed stone mixture in the storage tank 2 warm, preventing the asphalt in the storage tank 2 from solidifying due to the extremely cold working environment.

[0100] First, the workers drive the road roller 1 to the pothole that needs to be repaired. Since the pothole is below the horizontal level, the liquid inside the airbag 42 expands downward due to its own weight. Due to the fluidity of the liquid and its own weight, the airbag 42 gradually expands until it is in contact with the surface of the pothole. During the downward expansion of the bottom of the airbag 42, a lot of liquid flows downward, causing the upper sides of the airbag 42 to contract. When the sides of the airbag 42 contract, the pull rod 45 pulls the two metal sliders 44 closer to each other. When the two metal blocks are close to each other, the resistance value in the circuit (the circuit of power supply, metal sliders 44, metal rods 411, and valve connected in series) of the metal rod 411 decreases.

[0101] If the pothole volume is larger, more liquid flows into the pothole from the airbag 42, and the contraction on both sides of the airbag 42 is greater. This results in a smaller distance between the two metal sliders 44, reducing the resistance value of the metal rod 411 connected to the circuit. At this time, the resistance value is B1, A-B1=C1, and C1>0. The current in the circuit increases, and the valve opening angle is α. At this time, α>0°, the flow area of ​​the discharge port increases, and the discharge volume increases. This is suitable for discharging materials into large-volume potholes, avoiding a longer time for subsequent paving and compaction processes, improving road repair efficiency and quality, and also preventing partial solidification of the asphalt that enters the pothole first, thus improving the road repair effect.

[0102] If the pit volume is smaller, less liquid flows into the pit from the air bladder 42, and the contraction on both sides of the air bladder 42 is smaller. As a result, the resistance value of the metal rod 411 connected to the circuit decreases. At this time, the resistance value is B2, A-B2=C2, and C2>0, C1>C2. The current in the circuit increases slightly, and the valve opening angle is β. At this time, α>β>0°, the flow area of ​​the discharge port increases slightly, and the discharge volume increases slightly. This is suitable for discharging materials in small-volume pits, avoiding large discharge volumes in a short time, which are difficult to control and cause some mixed materials to be wasted or need to be collected again during the spreading and compaction process. This saves resources and improves work efficiency.

[0103] During the above detection process, the controller stores the resistance values ​​B (B1, B2). After the volume detection is completed, that is, after the airbag 42 leaves the pit, the opening angle of the valve is adjusted according to the detected resistance value B.

[0104] like Figure 3 , Figure 5 and Figure 6 As shown, a guide tube 6 is fixedly connected between the airbag 42 and the heat preservation ring 31, and the airbag 42 and the heat preservation ring 31 are connected through the guide tube 6.

[0105] By adopting the above technical solution, the heating wire heats the liquid in the insulation ring 31. When the volume of the pit is detected, the valve in the guide tube 6 is opened, and the high-temperature liquid enters the air bag 42. The air bag 42 expands, and then the valve in the guide tube 6 is closed.

[0106] During measurement, the high-temperature liquid inside the airbag 42 flows downward, causing the airbag 42 to inflate and fit against the groove. When the airbag 42 fits against the groove:

[0107] On the one hand, due to the low temperature in extremely cold regions, the surface temperature of potholes is also low. However, through heat transfer, the hot high-temperature liquid in the airbag 42 transfers heat to the surface of the pothole, preheating the surface of the pothole. The preheated pothole not only prevents the asphalt from solidifying rapidly when it comes into contact with the pothole, but also facilitates the subsequent paving and compaction processes, improving the road repair effect.

[0108] It also makes the preheated potholes, as old materials, easier to bond with new materials such as asphalt and crushed stone, further improving the road repair effect;

[0109] On the other hand, due to the low temperature in the pits, and in extremely cold regions at high altitudes, the pits are prone to accumulating snow, ice, or water.

[0110] If there is snow or ice in the pothole, the airbag 42 can help melt the snow and ice due to heat transfer, thus improving the adhesion of the pothole as a mixture of old and new materials such as asphalt and gravel.

[0111] Meanwhile, after the snow and ice melt into water, the weight of the airbag 42 and the liquid inside the airbag 42 will be used to squeeze the water from the melted snow and ice out of the pit.

[0112] If there is water in the pit, the weight of the airbag 42 and the liquid inside the airbag 42 will be used to squeeze the water from the melted snow and ice out of the pit, ensuring the adhesion of the pit as a mixture of old and new materials such as asphalt and gravel.

[0113] A sponge layer is fixedly attached to the outer surface of the airbag 42;

[0114] By adopting the above technical solution, if there is water in the pit, the weight of the airbag 42 and the liquid inside the airbag 42 can be used to squeeze the water from the melted snow and ice out of the pit. At this time, since the surface of the pit may still have a large humidity, when the airbag 42 comes into contact with the pit, the sponge layer on the surface of the airbag 42 absorbs the moisture on the surface of the pit, reducing the moisture on the surface of the pit. Moreover, the sponge is soft and easily deformable, and can fit into the surface of the pit to ensure the absorption effect.

[0115] like Figure 3 , Figure 5 and Figure 6 As shown, an installation plate 7 is provided on the side of the airbag 42 near the driver's cab 101. A hydraulic mechanism 8 is fixedly connected to the installation plate 7. The output end of the hydraulic mechanism 8 faces the airbag 42. A storage plate 9 is fixedly connected to the output end of the hydraulic mechanism 8. The storage plate 9 has an arc-shaped structure.

[0116] By adopting the above technical solution, when the airbag 42 is used to detect the volume of the pit, the output end of the hydraulic mechanism 8 contracts, the receiving plate 9 is separated from the airbag 42, and the liquid inside the airbag 42 moves downward due to gravity, which drives the airbag 42 into the pit and fits into the pit.

[0117] After the pit volume is detected, the output end of the hydraulic mechanism 8 extends and the storage plate 9 moves toward the airbag 42. Since the storage plate 9 is arc-shaped, it lifts the airbag 42 back and stores it when it moves toward the airbag 42.

[0118] Meanwhile, when the storage plate 9 lifts the airbag 42, the liquid in the airbag 42 still exerts pressure on the storage plate 9 due to its own weight. At this time, the sponge layer on the surface of the airbag 42 is located between the airbag 42 and the storage plate 9. Therefore, the sponge layer is squeezed, squeezing out the water absorbed by the sponge layer in the groove, which makes it easier for the sponge layer to be reused.

[0119] In addition, when the airbag 42 is retracted, the valve in the guide tube 6 is opened. Since the airbag 42 is compressed by the storage plate 9 during retraction, some of the liquid in the airbag 42 will enter the insulation ring 31. At the same time, some of the high-temperature liquid in the upper insulation ring 31 will enter the airbag 42. The liquid in the airbag 42 that has cooled down due to heat transfer and the high-temperature liquid in the insulation ring 31 will undergo a heat exchange to maintain the temperature of the liquid in the airbag 42.

[0120] like Figure 4 As shown, the storage tank 2 is equipped with a stirring shaft 10, which is fixedly connected to the storage tank 2. A stirring blade 11 is fixedly connected to the stirring shaft 10, and the stirring shaft 10 is driven by a power device fixedly installed on the road roller 1.

[0121] By adopting the above technical solution, the power equipment drives the mixing shaft 10 to rotate, and the mixing shaft 10 drives the mixing blade 11 to rotate, thereby mixing the asphalt and crushed stone mixture in the storage tank 2 and improving the mixing effect of asphalt and crushed stone materials.

[0122] like Figure 1 and Figure 2 As shown, aprons 12 are fixed to both sides of the road roller 1;

[0123] Due to the strong winds and low temperatures in high-altitude and extremely cold regions, skirts 12 are installed on both sides of the road roller 1 to keep the asphalt warm when it enters the pothole and slow down the rate at which the asphalt cools down.

[0124] Meanwhile, when the mixture enters the pothole, the apron 12 can prevent windblown sand from entering the unconsolidated mixture, reducing the bonding effect and the road repair effect.

[0125] Working principle:

[0126] When repairing roads in high-altitude and extremely cold regions, when the road surface is free of potholes and in good condition, the liquid fluctuation in the airbag 42 is small, and the airbag 42 is relatively in a balanced and static state. At this time, the two metal sliders 44 do not slide on the metal rod 411, the distance between the two metal rods 411 is a constant initial value, and the resistance value in the circuit (power supply, metal sliders 44, metal rods 411, and valve connected in series) of the metal rod 411 is the initial value A, and the valve opening angle is 0°.

[0127] At the same time, the staff started the heating equipment, and the heating wire heated the liquid in the insulation ring 31. The liquid temperature rose, which kept the asphalt and crushed stone mixture in the storage tank 2 warm, preventing the asphalt in the storage tank 2 from solidifying due to the extremely cold working environment.

[0128] First, the workers drive the road roller 1 to the pothole that needs to be repaired. Since the pothole is below the horizontal level, the liquid inside the airbag 42 expands downward due to its own weight. Due to the fluidity of the liquid and its own weight, the airbag 42 gradually expands until it is in contact with the surface of the pothole. During the downward expansion of the bottom of the airbag 42, a lot of liquid flows downward, causing the upper sides of the airbag 42 to contract. When the sides of the airbag 42 contract, the pull rod 45 pulls the two metal sliders 44 closer to each other. When the two metal blocks are close to each other, the resistance value in the circuit (the circuit of power supply, metal sliders 44, metal rods 411, and valve connected in series) of the metal rod 411 decreases.

[0129] If the pothole volume is larger, more liquid flows into the pothole from the airbag 42, and the contraction on both sides of the airbag 42 is greater. This results in a smaller distance between the two metal sliders 44, reducing the resistance value of the metal rod 411 connected to the circuit. At this time, the resistance value is B1, A-B1=C1, and C1>0. The current in the circuit increases, and the valve opening angle is α. At this time, α>0°, the flow area of ​​the discharge port increases, and the discharge volume increases. This is suitable for discharging materials into large-volume potholes, avoiding a longer time for subsequent paving and compaction processes, improving road repair efficiency and quality, and also preventing partial solidification of the asphalt that enters the pothole first, thus improving the road repair effect.

[0130] If the pit volume is smaller, less liquid flows into the pit from the air bladder 42, and the contraction on both sides of the air bladder 42 is smaller. As a result, the resistance value of the metal rod 411 connected to the circuit decreases. At this time, the resistance value is B2, A-B2=C2, and C2>0, C1>C2. The current in the circuit increases slightly, and the valve opening angle is β. At this time, α>β>0°, the flow area of ​​the discharge port increases slightly, and the discharge volume increases slightly. This is suitable for discharging materials from small-volume pits, avoiding large discharge volumes in a short time, which are difficult to control and may lead to waste or need to be collected again during material spreading and compaction. This saves resources and improves work efficiency.

[0131] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A road surface repair device for high-altitude, extremely cold regions, characterized in that: The road repair device for high-altitude and extremely cold regions includes: a road roller (1), a storage tank (2), an insulation unit (3), a measuring unit (4), and a discharge pipe (5); The road roller (1) includes a cab (101), a drive unit, and rollers; The storage bin (2) is located on the road roller (1) and is fixedly connected to the road roller (1). The storage bin (2) contains a mixture of asphalt and crushed stone. The insulation unit (3) is located outside the storage tank (2), and the insulation unit (3) is used to keep the mixture inside the storage tank (2) warm; The measuring unit (4) is located at the bottom of the road roller (1) and is connected to the road roller (1). The measuring unit (4) is used to measure the volume of potholes in the road surface. The discharge pipe (5) is located at the bottom of the storage tank (2) and is fixedly connected to the storage tank (2). The discharge pipe (5) is connected to the storage tank (2). A valve is fixedly connected inside the discharge pipe (5). The measuring unit (4) includes: a mounting bracket (41), an airbag (42), a hinge bracket (43), a metal slider (44), and a pull rod (45). The mounting frame (41) is fixedly connected to the bottom surface of the road roller (1). The mounting frame (41) is located on the side of the insulation ring (31) near the cab (101). The mounting frame (41) includes a metal rod (411) and connecting blocks fixedly installed at both ends of the metal rod (411). The airbag (42) is fixedly installed on the metal rod (411) by a fastener, and the airbag (42) is filled with liquid; The hinge frame (43) is provided in two and symmetrically distributed on both sides of the airbag (42), and the axis of symmetry of the two hinge frames (43) coincides with the axis of the road roller (1); Two metal sliders (44) are provided and symmetrically installed on the metal rod (411). The metal sliders (44) are slidably connected to the metal rod (411). The axis of symmetry of the two metal sliders (44) coincides with the axis of the road roller (1). A pull rod (45) is located between the hinge frame (43) and the metal slider (44). One end of the pull rod (45) is rotatably connected to the hinge frame (43), and the other end is rotatably connected to the metal slider (44). The heat preservation unit (3) includes: heat preservation ring (31), heating wire (32) and liquid inlet pipe (33); The heat insulation ring (31) is sleeved on the storage tank (2) and fixedly connected to the storage tank (2). The heat insulation ring (31) is a hollow structure and is filled with liquid. The heating wire (32) is located in the cavity of the insulation ring (31) and is fixedly connected to the insulation ring (31). The heating wire (32) is controlled by a heating device fixedly installed on the road roller (1). The liquid inlet pipe (33) is fixedly installed on the heat preservation ring (31) and communicates with the heat preservation ring (31); the air bag (42) is fixedly connected to the heat preservation ring (31) and the air bag (42) is connected to the heat preservation ring (31) through the air guide pipe (6).

2. The road repair device for high-altitude, extremely cold regions according to claim 1, characterized in that: A sponge layer is fixed to the outer surface of the airbag (42).

3. The road repair device for high-altitude, extremely cold regions according to claim 1, characterized in that: The airbag (42) is provided with an installation plate (7) on the side near the driver's cab (101). A hydraulic mechanism (8) is fixedly connected to the installation plate (7). The output end of the hydraulic mechanism (8) faces the airbag (42). A storage plate (9) is fixedly connected to the output end of the hydraulic mechanism (8). The storage plate (9) has an arc-shaped structure.

4. The road repair device for high-altitude, extremely cold regions according to claim 1, characterized in that: The storage tank (2) is equipped with a stirring shaft (10), which is fixedly connected to the storage tank (2). A stirring blade (11) is fixedly connected to the stirring shaft (10), and the stirring shaft (10) is driven by a power device fixedly installed on the road roller (1).

5. A road surface repair device for high-altitude, extremely cold regions according to claim 1, characterized in that: The roller (1) has aprons (12) fixed to both sides.

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