A cold joint treatment apparatus for hydraulic asphalt concrete impervious face panels

Abstract

This invention provides a cold joint treatment device for hydraulic asphalt concrete anti-seepage panels, including a walking mechanism. A combustion heating component is installed at the front of the walking mechanism, and the combustion heating component is connected to the walking mechanism via a lifting adjustment structure. A fuel supply mechanism is located at the rear of the walking mechanism, and a protective mechanism is located at the bottom of the walking mechanism. This invention has the following advantages: it uses an infrared burner to achieve surface heating, combined with temperature sensors evenly arranged along the length of the cold joint and a PLC automatic control system. This allows for real-time monitoring and precise control of the cold joint surface temperature within the optimal range, avoiding problems such as localized overheating and aging or insufficient temperature leading to poor bonding. Simultaneously, by adjusting the distance between the infrared burner and the cold joint, heat can be evenly penetrated to a depth of 5-8 cm, ensuring full fusion of the old and new asphalt concrete, increasing the bonding strength by more than 30%, and meeting the anti-seepage performance specifications.

Description

Technical Field

[0001] This invention relates to a cold joint treatment device for hydraulic asphalt concrete anti-seepage panels, belonging to the technical field of hydraulic construction equipment. Background Technology

[0002] Hydraulic asphalt concrete anti-seepage panels are a commonly used anti-seepage structure in water conservancy projects, and their construction quality directly affects the safe operation of the entire project. During the segmented construction of asphalt concrete panels, cold joints are inevitable. The bonding strength and anti-seepage performance at these cold joints are key factors affecting the overall quality of the panels.

[0003] Currently, the treatment of cold joints in hydraulic asphalt concrete mainly employs manual heating methods such as handheld blowtorches and small flame heaters. However, existing technologies have the following significant drawbacks:

[0004] 1. Uneven heating: Manual operation makes it difficult to ensure uniform heating of the entire cold joint, easily leading to localized overheating causing asphalt aging or localized insufficient temperature causing poor adhesion; 2. Low efficiency: Manual heating is slow and cannot meet the needs of large-scale, continuous construction; 3. Poor safety: Open flame operation poses a fire hazard, and operators are in close contact with high-temperature heat sources, which can easily cause burns; 4. Lack of integration: Fuel supply, heating, and temperature control functions are separated, resulting in cumbersome site layout and inconvenient relocation; 5. Poor environmental adaptability: Lack of wind and rain protection measures makes normal construction impossible in adverse weather conditions; 6. Lack of precise control: Lack of temperature monitoring and automatic control functions means that heating temperature and time are judged entirely by experience, making it difficult to guarantee quality; 7. Fixed working height: It cannot flexibly adapt to different locations of cold joints and the undulations of the panel.

[0005] An integrated, mobile, safe, and controllable specialized device is provided to solve the problems of low efficiency and unstable quality in cold seam processing mentioned above. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a device for treating cold joints in hydraulic asphalt concrete anti-seepage panels.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0008] A device for treating cold joints in hydraulic asphalt concrete anti-seepage panels includes a walking mechanism. A combustion heating component is installed at the front of the walking mechanism and is connected to the walking mechanism via a lifting adjustment structure. A fuel supply mechanism is provided at the rear of the walking mechanism, and a protective mechanism is provided at the bottom of the walking mechanism.

[0009] Furthermore, the walking mechanism includes a frame, and a walking wheel with brakes is installed at each of the four ends of the frame. The frame has a hollow structure.

[0010] Furthermore, the front end of the frame is provided with a standard traction connection point.

[0011] Furthermore, the combustion heating assembly includes a bracket, a heater bracket is mounted at the bottom of the bracket, an infrared burner is mounted on the heater bracket, and a branch pipe is mounted on the infrared burner.

[0012] Furthermore, a regulating valve is installed on the branch pipe.

[0013] Furthermore, the lifting and adjusting structure includes an electric push rod and a guide rod. The two electric push rods are hinged to the frame. The telescopic end of the electric push rod is hinged to a support fixed at the end of the bracket. The two guide rods are arranged crosswise. The top end of the guide rod is slidably connected to the top of the bracket through a linear bearing, and the bottom end of the guide rod is movably connected to the bracket.

[0014] Furthermore, the fuel supply mechanism includes a housing, which is fixed to the rear side of the frame. A gas cylinder is fixed inside the housing by a clamp, and the gas cylinder is connected to a gas pipeline through a pressure reducing valve. The gas pipeline is connected to the branch pipe.

[0015] Furthermore, the gas pipeline is equipped with a solenoid valve.

[0016] Furthermore, the protective mechanism includes a windproof and rainproof shield and a fireproof and heat-insulating layer. The windproof and rainproof shield is installed on the outside of the frame, and the fireproof and heat-insulating layer is installed on the bottom inside of the heater bracket.

[0017] Furthermore, it also includes a temperature control system, which includes several temperature sensors, a controller, and a display screen. The several temperature sensors are evenly distributed below the infrared burner. The controller and the display screen are mounted on the bracket, and the controller is electrically connected to the temperature sensors, the solenoid valve, and the display screen.

[0018] The beneficial effects of this invention are:

[0019] This invention uses an 18cm wide infrared burner to achieve surface heating. Combined with temperature sensors and a PLC automatic control system evenly arranged along the length of the cold joint, it can monitor and accurately control the surface temperature of the cold joint in real time within the optimal range, avoiding problems such as local overheating and aging or poor bonding due to insufficient temperature. At the same time, by adjusting the distance between the infrared burner and the cold joint, it can ensure that the heat penetrates evenly to a depth of 5-8cm in the cold joint, ensuring that the new and old asphalt concrete are fully fused.

[0020] This invention allows for continuous operation along cold joints, resulting in high construction efficiency. Each unit requires only one person to complete all operations, reducing labor costs by more than 70% compared to traditional 3-4 person teams. This invention can meet the needs of continuous construction in large-scale water conservancy projects.

[0021] This invention uses an infrared burner in conjunction with a multi-point temperature monitoring and automatic control system to ensure uniform heating of the entire cross-section of the cold joint, avoiding local overheating or insufficient temperature, and significantly improving the bonding strength and waterproofing performance of the cold joint.

[0022] This invention adopts an integrated design, and the equipment can move continuously along the cold seam, with a fast heating speed, which is several times more efficient than manual heating methods.

[0023] This invention features a complete fireproof and heat-insulating layer and protective devices, which prevents operators from being burned and reduces the risk of fire.

[0024] This invention integrates functions such as fuel supply, heating, temperature control, mobility, and lifting adjustment into one unit. It is simple to set up on site, easy to move, and can be quickly transferred to another location for operation.

[0025] This invention is equipped with a windproof and rainproof cover, which enables normal construction in light rain and winds below level 3, thus extending the effective construction time.

[0026] This invention employs an intelligent control system that can automatically control heating temperature and time, or allow for manual adjustment, thus reducing the skill requirements for operators.

[0027] This invention, through its lifting and angle adjustment mechanism, can adapt to the cold joint treatment requirements of hydraulic asphalt concrete anti-seepage panels with different slopes and heights, and can also be used for joint treatment of other asphalt concrete structures. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a cold joint treatment device for hydraulic asphalt concrete anti-seepage panels according to the present invention. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the structure of a cold joint treatment device for hydraulic asphalt concrete anti-seepage panels according to the present invention. Figure 2 ;

[0031] Figure 3 This is a schematic diagram of the fuel supply mechanism of a cold joint treatment device for hydraulic asphalt concrete anti-seepage panels according to the present invention.

[0032] Figure 4 This is a schematic diagram of the connection structure between the combustion heating component and the lifting and adjusting structure of a cold joint treatment device for hydraulic asphalt concrete anti-seepage panels according to the present invention.

[0033] Figure 5 This is a partial structural schematic diagram of a cold joint treatment device for hydraulic asphalt concrete anti-seepage panels according to the present invention.

[0034] In the diagram, 1. Walking mechanism; 2. Frame; 3. Fuel supply mechanism; 4. Combustion heating assembly; 5. Temperature control system; 6. Lifting and adjusting structure; 7. Protective mechanism; 8. Standard traction connection point; 9. Support; 10. Heater support; 11. Infrared burner; 12. Regulating valve; 13. Electric push rod; 14. Guide rod; 15. Housing; 16. Clamp; 17. Gas cylinder; 18. Pressure reducing valve; 19. Gas pipeline; 20. Solenoid valve; 21. Windproof and rainproof cover; 22. Fireproof and heat insulation layer; 23. Temperature sensor; 24. Controller; 25. Display screen; 26. Branch pipe; 27. Walking wheels. Detailed Implementation

[0035] 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.

[0036] Please refer to Figure 1- Figure 5 The present invention provides a technical solution for a cold joint treatment device for hydraulic asphalt concrete anti-seepage panels, including a walking mechanism 1. A combustion heating component 4 is installed at the front of the walking mechanism 1. The combustion heating component 4 is connected to the walking mechanism 1 through a lifting adjustment structure 6. A fuel supply mechanism 3 is provided at the rear of the walking mechanism 1. A protective mechanism 7 is provided at the bottom of the walking mechanism 1.

[0037] See Figure 5The walking mechanism 1 includes a frame 2, which is made of steel and can withstand the weight of the equipment and vibration during operation. The overall structure is sturdy and durable. Each of the four ends of the frame 2 is equipped with a walking wheel 27 with brakes. The walking wheel 27 is made of rubber and has good wear resistance and anti-slip properties, making it suitable for walking on asphalt concrete surfaces. The frame 2 is a hollow structure. The front end of the frame 2 is provided with a standard traction connection point 8, which can be connected to a winch via a wire rope to realize traction-type construction on slope working faces such as the reservoir slope of a pumped storage power station.

[0038] See Figure 4 The combustion heating assembly 4 includes a bracket 9, and a heater bracket 10 is installed at the bottom of the bracket 9. The heater bracket 10 is welded from angle steel. An infrared burner 11 is fixed to the heater bracket 10 by bolts. The heating width of the infrared burner 11 is 18cm, which can cover the treatment width of the cold joint of the general hydraulic asphalt concrete anti-seepage panel. A branch pipe 26 is installed on the infrared burner 11, and an adjusting valve 12 is installed on the branch pipe 26. The firepower of each burner can be adjusted individually as needed to meet the heating requirements of different parts.

[0039] See Figure 4 The lifting and adjusting structure 6 includes an electric push rod 13 and a guide rod 14. The two electric push rods 13 are hinged to the frame 2. The telescopic ends of the electric push rods 13 are hinged to the supports fixed at the ends of the brackets 9. The two guide rods 14 are arranged crosswise. The top end of the guide rod 14 is slidably connected to the top of the brackets 9 through a linear bearing, and the bottom end of the guide rod 14 is movably connected to the frame 2. The electric push rods 13 are electrically connected to the controller 24. The extension and retraction of the electric push rods 13 drives the heater bracket 10 to move up and down, with an adjustment range of 10-20cm, thereby adjusting the distance between the infrared burner 11 and the cold joint surface to obtain the best heating effect. At the same time, by adjusting the extension and retraction of the two electric push rods 13, the heater bracket 10 can be tilted at a certain angle, with a maximum tilt angle of 30°, to adapt to asphalt concrete panels with different slopes.

[0040] See Figure 3 The fuel supply mechanism 3 includes a housing 15, which is fixed to the rear side of the frame 2. A gas cylinder 17 is fixed inside the housing 15 by a clamp 16 for easy replacement. The gas cylinder 17 is a standard gas cylinder. The gas cylinder 17 is connected to the gas pipeline 19 through a pressure reducing valve 18. The pressure reducing valve 18 is used to reduce the pressure of high-pressure gas to the working pressure. The gas pipeline 19 is made of stainless steel, which is corrosion-resistant and high-temperature resistant. The gas pipeline 19 is connected to the branch pipe 26. A solenoid valve 20 is provided on the gas pipeline 19. The solenoid valve is an explosion-proof solenoid valve and is electrically connected to the controller to control the on / off of gas.

[0041] See Figure 5 The protective mechanism 7 includes a windproof and rainproof shield 21 and a fireproof and heat-insulating layer 22. The windproof and rainproof shield 21 is installed on the outside of the frame 2. The windproof and rainproof shield is made of stainless steel plate and can effectively block the influence of wind and rain on the burner, ensuring normal construction under light rain and wind force below level 3. The fireproof and heat-insulating layer 22 is installed on the bottom inner side of the heater bracket 10. The fireproof and heat-insulating layer 22 is made of 10mm thick high temperature resistant fireproof rock wool board and is laid on the bottom inner side of the heater bracket 10. It can effectively block heat transfer to the frame 2 and other components, prevent the equipment from overheating and being damaged, and also reduce the surface temperature of the frame 2 to avoid burns to the operators.

[0042] See Figure 5 The system also includes a temperature control system 5, which comprises several temperature sensors 23, a controller 24, and a display screen 25. The temperature sensors 23 are evenly distributed along the length of the cold joint below the infrared burner 11, at a height of 5 cm above the surface of the cold joint, for real-time monitoring of the surface temperature of the cold joint with a measurement accuracy of ±1℃. The controller 24 and the display screen 25 are mounted on the bracket 9. The controller is a PLC controller, electrically connected to the temperature sensors 23, the solenoid valve 20, and the display screen 25. The display screen 25 is a touch-screen LCD, used to display parameters such as real-time temperature, set temperature, and heating time, and allows input of control commands via the touchscreen. The controller 24 has a preset heating program that can automatically select the appropriate heating temperature and heating time according to different types of asphalt concrete and ambient temperature. When the temperature sensor 23 detects that the surface temperature of the cold joint has reached the set value, the controller 24 automatically reduces the opening of the solenoid valve 20 to maintain constant temperature heating. When the heating time reaches the set value, the controller 24 automatically closes the solenoid valve 20 to stop heating.

[0043] Before use, push the equipment to the starting position of the cold joint to be treated, lock the brakes on the traveling wheels, and adjust the extension and retraction of the two electric push rods 13 according to the slope of the cold joint and the undulation of the panel through the controller 24 to keep the infrared burner 11 at the optimal heating distance of 10-20cm from the surface of the cold joint, and adjust the angle of the infrared burner 11 to make it parallel to the surface of the cold joint; select the corresponding asphalt concrete type and ambient temperature on the touch screen, and the controller will automatically load the preset heating temperature (110℃-140℃) and heating time parameters, or manually modify the parameters according to the actual working conditions.

[0044] When the valve on the gas cylinder 17 is opened, the high-pressure gas is reduced to the working pressure by the pressure reducing valve 18 and then delivered to the branch pipe 26 through the gas pipeline 19. The operator sends an ignition command through the display screen 25, and the controller 24 controls the solenoid valve 20 to open, so that the gas enters the infrared burner 11. At the same time, the ignition device is activated to ignite the infrared burner 11. The flame intensity of each burner can be adjusted individually through the regulating valve 12 on the branch pipe 26 to achieve differentiated heating of different parts of the cold seam.

[0045] The infrared radiation heat generated by the infrared burner 11 acts directly on the surface of the cold joint, causing the asphalt concrete to heat up rapidly. Temperature sensors 23, evenly arranged below the infrared burner 11, collect the surface temperature of the cold joint in real time and transmit the data to the controller 24. When the temperature is lower than the set value, the controller 24 automatically increases the opening of the solenoid valve 20 to increase the gas flow and enhance the heating power. When the temperature reaches the set value, the controller 24 decreases the opening of the solenoid valve 20 to maintain constant temperature heating and avoid local overheating. The display screen 25 displays the temperature data and heating progress of each point in real time.

[0046] Once the initial section of the cold seam has been heated to the set time, the brakes on the traveling wheels are unlocked, and the equipment is pushed or pulled by a winch to travel at a constant speed along the length of the cold seam. The traveling speed is matched with the heating time to achieve continuous heating of the cold seam. During the travel process, the temperature control system works continuously to ensure that the heating temperature of the entire cold seam is uniform.

[0047] When the entire cold joint treatment is completed or the heating time reaches the set value, the controller 24 automatically closes the solenoid valve 20, cuts off the gas supply, and the infrared burner 11 is extinguished. If abnormally high temperature, gas leakage, or flame extinguishing occurs during construction, the controller 24 will immediately trigger the safety protection mechanism, automatically close the solenoid valve 20 and issue an audible and visual alarm to prevent accidents from occurring.

[0048] During operation, the windproof and rainproof cover 21 blocks wind and rain from interfering with the infrared burner 11, ensuring stable flame combustion; the fireproof and heat-insulating layer 22 blocks the heat of the infrared burner 11 from being transferred to the frame, preventing the equipment from overheating and being damaged, while reducing the surface temperature of the frame 2 to protect the safety of the operators.

[0049] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for treating cold joints in hydraulic asphalt concrete anti-seepage panels, characterized in that, include: Walking mechanism (1), used to provide movement support; A combustion heating component (4) is installed in the middle of the walking mechanism (1) for heating the cold joints of the concrete anti-seepage panel; A lifting adjustment structure (6) is installed between the walking mechanism (1) and the combustion heating assembly (4) for driving the combustion heating assembly (4) to lift. A fuel supply mechanism (3), installed at the rear end of the walking mechanism (1), is used to supply combustible gas to the combustion heating assembly (4); A protective mechanism (7) is installed at the bottom of the walking mechanism (1) to reduce the impact of wind and rain on the combustion heating assembly (4); A temperature control system (5) is installed on the walking mechanism (1) and the fuel supply mechanism (3) to monitor the temperature of the cold seam surface in real time.

2. The equipment for treating cold joints in hydraulic asphalt concrete anti-seepage panels according to claim 1, characterized in that, The walking mechanism (1) includes: The frame (2) is a hollow structure used to provide support; The traveling wheels (27) are installed at the four ends of the frame (2), and brakes are installed on the traveling wheels (27).

3. The equipment for treating cold joints in hydraulic asphalt concrete anti-seepage panels according to claim 2, characterized in that, The front end of the frame (2) is provided with a standard traction connection point (8).

4. The equipment for treating cold joints in hydraulic asphalt concrete anti-seepage panels according to claim 3, characterized in that, The combustion heating assembly (4) includes: The bracket (9) has supports on both sides for connecting to the lifting end of the lifting adjustment structure (6); A heater bracket (10) is fixedly installed at the bottom of the bracket (9) to provide support; An infrared burner (11) is fixedly installed on the heater bracket (10) and is used to heat the cold seam. Branch pipe (26) is installed at the air inlet end of the infrared burner (11) for connecting to the fuel supply mechanism (3).

5. The equipment for treating cold joints in hydraulic asphalt concrete anti-seepage panels according to claim 4, characterized in that, A regulating valve (12) is installed on the branch pipe (26).

6. The equipment for treating cold joints in hydraulic asphalt concrete anti-seepage panels according to claim 5, characterized in that, The lifting and adjusting structure (6) includes: An electric push rod (13) is mounted at the top of the frame (2) and its telescopic end is hinged to the support, used to drive the combustion heating assembly (4) to rise and fall. Guide rods (14), two guide rods (14) are arranged crosswise on the side of the combustion heating assembly (4). The top end of the guide rod (14) is slidably connected to the top of the bracket (9) through a linear bearing. The bottom end of the guide rod (14) is movably connected to the bracket (2) to provide stable support for the lifting and lowering of the combustion heating assembly (4).

7. The equipment for treating cold joints in hydraulic asphalt concrete anti-seepage panels according to claim 6, characterized in that, The fuel supply mechanism (3) includes: The housing (15) is fixed to the rear side of the frame (2) to provide safety protection; The gas cylinder (17) is fixed inside the housing (15) by a clamp (16); The gas pipeline (19) is connected at one end to the gas cylinder (17) via a pressure reducing valve (18) and at the other end to the branch pipe (26) to provide combustible gas to the combustion heating assembly (4).

8. The equipment for treating cold joints in hydraulic asphalt concrete anti-seepage panels according to claim 7, characterized in that, The gas pipeline (19) is equipped with a solenoid valve (20).

9. The equipment for treating cold joints in hydraulic asphalt concrete anti-seepage panels according to claim 8, characterized in that, The protective mechanism (7) includes: A windproof and rainproof cover (21) is installed on the outside of the frame (2) to block the influence of wind and rain on the burner; A fireproof and heat-insulating layer (22) is installed on the bottom inner side of the heater bracket (10) to block heat transfer to the frame (2).

10. The equipment for treating cold joints in hydraulic asphalt concrete anti-seepage panels according to claim 9, characterized in that, The temperature control system (5) includes: Temperature sensors (23) are evenly distributed at the bottom of the frame (2) and located below the infrared burner (11) to monitor the temperature of the cold seam surface in real time and maintain the constant temperature heating of the combustion heating assembly (4). The controller (24), mounted on the bracket (9), is used to select the appropriate heating temperature and heating time according to different types of asphalt concrete and ambient temperature; The display screen (25), mounted on the bracket (9), is used to display the real-time temperature, the set temperature, and the heating time.

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