A maintenance device for asphalt pavement pothole repair

Abstract

The utility model relates to road surface repair technical field, and disclose a kind of maintenance device for pitch pavement pit slot repair, including vehicle body, material storage assembly is fixedly installed on vehicle body upper end, material storage assembly lower end is fixedly installed with downcomer, outlet hole is opened in the six groups of through holes of downcomer lower end, it is evenly distributed in the form of circumferential array, hot air in air passage can be all-around, evenly injected to lower pit slot or downcomer inner wall, six groups of aperture adaptation design both guarantee the injection intensity of hot air, avoid pitch particle blockage, realize accurate preheating and efficient cleaning, wind deflector is sleeved in downcomer lower end outside, upper end is slidably connected with downcomer inner wall, can be adjusted telescopic length according to pit slot depth, play wind gathering and heat preservation effect, when preheating, hot air can be concentrated in pit slot area, reduce heat loss to surrounding environment, improve preheating efficiency, while can avoid foreign matter into downcomer inside.

Description

Technical Field

[0001] This utility model relates to the field of road repair technology, specifically a maintenance device for repairing potholes in asphalt pavements. Background Technology

[0002] Under the influence of long-term traffic loads, natural environmental erosion, and material aging, asphalt pavements are prone to small potholes, such as spot-like or narrow strip-like defects. If not repaired in time, these potholes will expand rapidly, leading to a decrease in pavement smoothness and reduced driving safety. Therefore, efficient repair of small potholes is one of the core requirements of asphalt pavement maintenance.

[0003] Existing maintenance equipment for small pothole repair requires preheating of the pothole before operation. It is usually equipped with an independent heating box and heating pipe. The operator holds the heating pipe to heat the pothole wall and bottom. After the pothole temperature reaches the preset requirement, the vehicle body of the maintenance equipment is moved so that the discharge pipe is aligned with the top of the pothole. Asphalt mixture is delivered into the pothole through the discharge pipe via the material storage component. Finally, the compaction operation is completed by the pressure roller component.

[0004] However, this method of preheating the pothole by hand and then moving the vehicle to unload the material is quite cumbersome. Preheating and unloading are separate operations, requiring frequent adjustments to the vehicle position to align with the pothole. This not only increases the number of steps but also makes it easy for alignment deviations to affect the repair accuracy. In addition, the pothole will quickly dissipate heat while waiting for the vehicle to move and unload the material, causing the temperature to drop. In view of this, we propose a maintenance device for repairing potholes in asphalt pavements. Utility Model Content

[0005] The purpose of this invention is to provide a maintenance device for repairing potholes in asphalt pavements, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a maintenance device for repairing potholes in asphalt pavement, comprising a vehicle body, a material storage assembly fixedly installed at the upper end of the vehicle body, a material discharge pipe fixedly installed at the lower end of the material storage assembly, the lower end of the material discharge pipe penetrating the inner wall of the lower end of the vehicle body, a pressure roller assembly provided on the side of the vehicle body away from the material storage assembly, and a heating assembly provided inside the material discharge pipe; The heating assembly includes a feeding plate disposed on the inner wall of the feeding pipe, a venting cavity being formed inside the feeding plate, a rotator being disposed on one side of the feeding plate, and a venting pipe being fixedly installed on the other side of the feeding plate. One end of the venting pipe penetrates the inner wall of the venting cavity, and the other end of the venting pipe is rotatably connected to a one-way valve via a rotary joint. A heating box is fixedly installed on the upper end of the vehicle body, and the heating box and the one-way valve are connected through an air duct. An air outlet is formed at the lower end of the venting cavity, and a wind deflector is disposed at the lower end of the feeding pipe.

[0007] Preferably, the rotator includes a control rotator fixedly installed on the side wall of the feed pipe, and the end of the control rotator passes through the inner wall of the feed pipe through a rotating rod and is fixedly connected to the end of the feed plate.

[0008] Preferably, the upper end of the windbreak is slidably connected to the inner wall of the discharge pipe, and the size of the discharge plate is adapted to the diameter of the inner wall of the discharge pipe, so as to tightly fit the inner wall of the discharge pipe, thereby preventing asphalt mixture from leaking through the gaps and ensuring the sealing of the discharge channel.

[0009] Preferably, the air outlets are provided in six groups, which are arranged in a circumferential array at the lower end of the ventilation cavity. This distribution method allows hot air to be sprayed evenly from different directions, ensuring that the wall and bottom temperatures are consistent during pit preheating and that the inner wall of the discharge pipe is fully covered during cleaning, avoiding residue accumulation caused by incomplete local blowing and improving the uniformity of preheating and cleaning.

[0010] Preferably, the feeding plate is located at the lower end of the feeding pipe. This installation position can shorten the distance that hot air is sprayed into the pit, reduce heat loss, and improve preheating efficiency.

[0011] Preferably, the air outlet is provided with a shielding mechanism, which includes a fixed rod fixedly installed on the inner wall of the air outlet. The fixed rod has an annular groove on its surface, and an elastic gasket is fixedly installed on the surface of the annular groove. A sleeve is sleeved on the surface of the fixed rod, and baffles are fixedly installed on both sides of the sleeve.

[0012] Preferably, the size of the baffle is adapted to the inner diameter of the air outlet, and the sleeve and the fixing rod are fitted with a clearance.

[0013] Compared with the prior art, this utility model provides a maintenance device for repairing potholes in asphalt pavements, which has the following beneficial effects: 1. This maintenance device for repairing potholes in asphalt pavements integrates preheating and material feeding through a heating mechanism. During operation, only the vehicle body needs to be moved to align the material feeding pipe with the pothole, eliminating the need for separate hand-held heating of the heating pipe, thus reducing operational steps. Hot air is directly sprayed into the pothole through the air outlet for preheating, precisely focusing the preheating range on the pothole area to avoid localized underheating or overheating. After preheating, the material can be fed immediately by flipping the material feeding plate without moving the vehicle body, significantly shortening the interval between preheating and material feeding, reducing heat loss from the pothole, ensuring the adhesion between the mixture and the pothole wall, avoiding alignment deviations, and improving repair accuracy. After material feeding is completed, the heating box can be restarted to introduce hot air into the ventilation chamber, which can remove asphalt mixture residue that adheres to the inner wall of the material feeding pipe during the feeding process.

[0014] 2. This maintenance device for repairing potholes in asphalt pavement effectively prevents vent blockage by setting up a shielding mechanism, thus improving the reliability of the device: In the absence of wind, the baffle tightly shields the vent, preventing asphalt particles from entering the vent and causing blockage during material feeding, ensuring the smooth flow of hot air spray. At the same time, the reciprocating motion of the baffle under the action of hot air can achieve self-cleaning, further reducing the risk of blockage. It eliminates the need for frequent manual cleaning of the vent, improving work efficiency and reducing maintenance costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the material feeding tube part of this utility model; Figure 3 This is a partial cross-sectional view of the material feeding pipe of this utility model; Figure 4 This is a partial cross-sectional view of the ventilation cavity of this utility model; Figure 5 This is a schematic diagram of the exploded structure of the sleeve part of this utility model.

[0016] In the diagram: 1. Vehicle body; 2. Material storage assembly; 3. Heating assembly; 4. Baffle mechanism; 5. Feeding pipe; 6. Pressure roller assembly; 31. Feeding plate; 32. Ventilation chamber; 33. Rotator; 34. Ventilation pipe; 35. One-way valve; 36. Heating box; 37. Air outlet; 38. Wind deflector; 41. Fixing rod; 42. Elastic gasket; 43. Sleeve; 44. Baffle. Detailed Implementation

[0017] like Figures 1-5 As shown, this utility model provides a technical solution: a maintenance device for repairing potholes in asphalt pavement, including a vehicle body 1, a material storage component 2 fixedly installed on the upper end of the vehicle body 1, a material discharge pipe 5 fixedly installed on the lower end of the material storage component 2, the lower end of the material discharge pipe 5 penetrating the lower inner wall of the vehicle body 1, a pressure roller component 6 provided on the side of the vehicle body 1 away from the material storage component 2, and a heating component 3 provided inside the material discharge pipe 5. The heating assembly 3 includes a feeding plate 31 disposed on the inner wall of the feeding pipe 5. A venting chamber 32 is provided inside the feeding plate 31. A rotator 33 is disposed on one side of the feeding plate 31, and a venting pipe 34 is fixedly installed on the other side of the feeding plate 31. One end of the venting pipe 34 penetrates the inner wall of the venting chamber 32, and the other end of the venting pipe 34 is rotatably connected to a one-way valve 35 via a rotary joint. A heating box 36 is fixedly installed on the upper part of the vehicle body 1. The heating box 36 and the one-way valve 35 are connected via an air duct. An air outlet is provided at the lower end of the venting chamber 32. 37. A baffle 38 is provided at the lower end of the feeding pipe 5. The rotator 33 includes a control rotator fixedly installed on the side wall of the feeding pipe 5. The end of the control rotator passes through the inner wall of the feeding pipe 5 through a rotating rod and is fixedly connected to the end of the feeding plate 31. The upper end of the baffle 38 is slidably connected to the inner wall of the feeding pipe 5. The size of the feeding plate 31 is adapted to the diameter of the inner wall of the feeding pipe 5. Six sets of air outlets 37 are opened. The six sets of air outlets 37 are opened in a circular array at the lower end of the ventilation cavity 32. The feeding plate 31 is located at the lower end of the inner wall of the feeding pipe 5.

[0018] In this embodiment of the utility model, the vehicle body 1 serves as the supporting foundation and mobile carrier of the entire maintenance device, providing a stable installation benchmark for all functional components such as the material storage component 2, heating component 3, and pressure roller component 6. Its bottom is equipped with a movable structure adapted to small pothole repair scenarios, which can be flexibly adjusted to ensure that the material discharge pipe 5 can be quickly aligned with the pothole without frequent large-scale movements, thus improving the convenience of operation. The material storage component 2 is used to store asphalt mixture, and its interior has a heat preservation function to maintain the working temperature of the mixture and avoid excessive temperature drop before material discharge, which would affect the repair effect. The lower end is precisely connected to the material discharge pipe 5 to ensure that the mixture can smoothly enter the discharge channel without leakage or accumulation. The pressure roller component 6 is located on the side of the vehicle body 1 away from the material storage component 2 and is used to roll and compact the asphalt mixture after discharge, so that the mixture is tightly bonded to the pothole wall, improving the smoothness and strength of the repaired road surface.

[0019] The feeding plate 31 is horizontally positioned inside the lower end of the feeding pipe 5, with its outer diameter precisely matched to the inner diameter of the feeding pipe 5. It serves both as a temporary support for the mixture and as a carrier for hot air jetting. The ventilation chamber 32 is a closed cavity inside the feeding plate 31, with one end connected to the ventilation pipe 34 and the other end connected to multiple sets of air outlets 37. This allows for the even distribution of the incoming hot air, preventing localized hot air concentration or uneven distribution and ensuring the stability of preheating and cleaning effects. The rotator 33 consists of a control rotator and a rotating rod. The control rotator is fixedly installed on the side wall of the feeding pipe 5, and the rotating rod passes through the inner wall of the feeding pipe 5 and is fixedly connected to the end of the feeding plate 31. It can receive control signals to drive the feeding plate 31 to achieve precise rotation, controlling the timing and amount of the mixture being fed. The operation is highly automated and requires no manual intervention.

[0020] The vent pipe 34 serves as a connecting channel for hot air conveying. One end is fixedly connected to the vent chamber 32, and the other end is rotatably connected to the one-way valve 35 via a rotary joint. The design of the rotary joint ensures that the vent pipe 34 will not become entangled, twisted, or damaged when the feed plate 31 is flipped, while also ensuring the airtightness of the hot air conveying and reducing heat loss. The one-way valve 35 is installed between the vent pipe 34 and the air duct, playing a one-way guiding role. It only allows the hot air generated by the heating box 36 to flow into the vent chamber 32 in one direction, preventing hot air backflow or mixed material debris and dust from entering the vent pipe 34 and the interior of the heating box 36, thus protecting equipment components and extending service life.

[0021] The heating box 36 is the core component for generating hot air. It integrates a heating module and a temperature control unit, which can stably generate hot air at a preset temperature. The temperature can be adjusted according to the working environment to ensure the temperature conditions required for preheating the pit and avoid excessive temperature causing asphalt aging. It is connected to the air duct and the one-way valve 35 to provide a continuous and stable source of hot air for the entire heating component 3. The air outlet 37 has six sets of through holes at the lower end of the material discharge plate 31, which are evenly distributed in a circumferential array. This allows the hot air in the ventilation chamber 32 to be sprayed all-round and evenly onto the inner wall of the pit or the material discharge pipe 5 below. The design of the six sets of holes with matching diameters ensures the spray intensity of hot air and avoids asphalt particle blockage, achieving precise preheating and efficient cleaning.

[0022] The wind baffle 38 is installed on the outer side of the lower end of the feed pipe 5, and the upper end is slidably connected to the inner wall of the feed pipe 5. The extension length can be adjusted according to the depth of the pit, which plays the role of wind gathering and heat preservation. During preheating, it can concentrate the hot air in the pit area, reduce the heat loss to the surrounding environment, improve the preheating efficiency, and at the same time prevent external debris from entering the interior of the feed pipe 5.

[0023] Please continue reading. Figures 1-5 The vent 37 is equipped with a shielding mechanism 4. The shielding mechanism 4 includes a fixed rod 41 fixedly installed on the inner wall of the vent 37. The surface of the fixed rod 41 is provided with an annular groove. An elastic gasket 42 is fixedly installed on the surface of the annular groove. A sleeve 43 is sleeved on the surface of the fixed rod 41. Baffles 44 are fixedly installed on both sides of the sleeve 43. The size of the baffles 44 is adapted to the inner diameter of the vent 37. The sleeve 43 and the fixed rod 41 are fitted with a clearance.

[0024] In this embodiment of the utility model, the fixing rod 41 is horizontally fixedly installed on the inner wall of the air outlet 37 to provide installation support for other components of the shielding mechanism 4. The annular groove opened on the surface is used to fix the elastic gasket 42, ensuring that the elastic gasket 42 is firmly installed and not easily displaced, while providing guidance for the sliding of the sleeve 43.

[0025] The elastic gasket 42 is fixed in the annular groove of the fixed rod 41, and has good elastic deformation and reset ability, providing a power basis for the reciprocating motion of the sleeve 43. When the hot air impacts the baffle 44, the elastic gasket 42 is squeezed and deformed to store elastic potential energy. When the hot air stops, the potential energy is released to drive the baffle 44 to reset and close.

[0026] The sleeve 43 is fitted onto the surface of the fixed rod 41 with a clearance fit, allowing it to slide flexibly along the fixed rod 41. Both sides are fixedly connected to the baffle 44, enabling the baffle 44 to move synchronously and open and close the air outlet 37. The size of the baffle 44 is precisely matched with the inner diameter of the air outlet 37. In the absence of wind, the baffle 44 fits tightly against the inner wall of the air outlet 37 under the action of the elastic gasket 42, achieving complete blockage. When hot air is sprayed, the sleeve 43 moves under the action of hot air pressure, opening the air outlet 37 to allow hot air to pass through. At the same time, the movement of the baffle 44 can scrape off a small amount of adhering material on the inner wall of the air outlet 37, further preventing blockage.

[0027] During operation, the operator first cleans the small pothole to be repaired, then moves the vehicle body 1 so that the lower end of the discharge pipe 5 is aligned with the top of the pothole. At this time, the lower end of the baffle 38 is close to the road surface around the pothole. Then, the heating box 36 is activated, generating hot air. The hot air enters the ventilation pipe 34 through the air duct and one-way valve 35, and is then delivered to the ventilation chamber 32 inside the discharge plate 31 through the ventilation pipe 34. The ventilation chamber 32 evenly distributes the hot air to the six sets of air outlets 37. At this time, the pressure generated by the hot air acts on the baffle 44, pushing the sleeve 43 to slide along the fixed rod 41 and squeeze the elastic pad 42. The baffle 44 moves with the sleeve 43 to open the air outlets 37, and the hot air is directionally sprayed into the pothole through the air outlets 37 to evenly preheat the pothole walls and bottom. After preheating is completed, the heating box 36 is closed, and the hot air pressure... When the force disappears, the elastic pad 42 releases its elastic potential energy, pushing the sleeve 43 and the baffle 44 to reset. The baffle 44 then covers the air outlet 37 again. Then, the control rotator of the rotator 33 is started. The control rotator drives the material feeding plate 31 to flip through the rotating rod. The asphalt mixture in the material storage assembly 2 falls into the pit under the action of gravity through the material feeding pipe 5, completing the paving operation. After the material feeding is completed, the material feeding plate 31 is flipped back to the right position. Without moving the vehicle body 1 or performing other intermediate operations, the heating box 36 is started again to repeat the hot air conveying process. At this time, the hot air strongly blows the inner wall of the material feeding pipe 5, blowing off the adhering asphalt mixture residue into the pit. After the material feeding is completed, the operator uses the pressure roller assembly 6 on one side of the vehicle body 1 to roll and compact the mixture in the pit, thereby completing the repair operation of the small road pit.

[0028] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A maintenance device for repairing potholes in asphalt pavement, comprising a vehicle body (1), wherein a material storage assembly (2) is fixedly installed on the upper end of the vehicle body (1), and a material discharge pipe (5) is fixedly installed on the lower end of the material storage assembly (2), the lower end of the material discharge pipe (5) penetrating the lower inner wall of the vehicle body (1), and a pressure roller assembly (6) is provided on the side of the vehicle body (1) away from the material storage assembly (2), characterized in that: The feeding pipe (5) is equipped with a heating component (3); The heating component (3) includes a feeding plate (31) disposed on the inner wall of the feeding pipe (5). The feeding plate (31) has a ventilation chamber (32) inside. A rotator (33) is disposed on one side of the feeding plate (31). A ventilation pipe (34) is fixedly installed on the other side of the feeding plate (31). One end of the ventilation pipe (34) passes through the inner wall of the ventilation chamber (32). The other end of the ventilation pipe (34) is rotatably connected to a one-way valve (35) through a rotary joint. A heating box (36) is fixedly installed on the upper end of the vehicle body (1). The heating box (36) and the one-way valve (35) are connected through a duct. An air outlet (37) is disposed at the lower end of the ventilation chamber (32). A wind deflector (38) is disposed at the lower end of the feeding pipe (5).

2. The maintenance device for repairing potholes in asphalt pavement according to claim 1, characterized in that: The rotator (33) includes a control rotator fixedly installed on the side wall of the feed pipe (5). The end of the control rotator passes through the inner wall of the feed pipe (5) through a rotating rod and is fixedly connected to the end of the feed plate (31).

3. The maintenance device for repairing potholes in asphalt pavement according to claim 1, characterized in that: The upper end of the wind baffle (38) is slidably connected to the inner wall of the feed pipe (5), and the size of the feed plate (31) is adapted to the inner wall diameter of the feed pipe (5).

4. A maintenance device for repairing potholes in asphalt pavement according to claim 1, characterized in that: The air outlet (37) has six sets, and the six sets of air outlets (37) are arranged in a circular array at the lower end of the ventilation cavity (32).

5. A maintenance device for repairing potholes in asphalt pavement according to claim 1, characterized in that: The feeding plate (31) is located at the lower end of the inside of the feeding tube (5).

6. A maintenance device for repairing potholes in asphalt pavement according to claim 1, characterized in that: The air outlet (37) is provided with a shielding mechanism (4). The shielding mechanism (4) includes a fixed rod (41) fixedly installed on the inner wall of the air outlet (37). The surface of the fixed rod (41) is provided with an annular groove. An elastic gasket (42) is fixedly installed on the surface of the annular groove. A sleeve (43) is sleeved on the surface of the fixed rod (41). Baffles (44) are fixedly installed on both sides of the sleeve (43).

7. A maintenance device for repairing potholes in asphalt pavement according to claim 6, characterized in that: The size of the baffle (44) is matched with the inner diameter of the air outlet (37), and the sleeve (43) and the fixing rod (41) are fitted with clearance.

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