Post-treatment construction equipment for cold joints of hydraulic asphalt concrete anti-seepage face plate
The construction equipment for post-treatment of cold joints in hydraulic asphalt concrete anti-seepage panels, which combines thermal, mechanical, and chemical processes, solves the problems of insufficient heating speed and quality damage, and achieves efficient and precise treatment of cold joints. It is suitable for scenarios with stringent anti-seepage requirements in water conservancy projects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GEZHOUBA GRP NO 2 ENG
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-17
AI Technical Summary
In existing technologies, the heating rate is difficult to meet the paving speed, which easily leads to the formation of new cold joints. Furthermore, high-power heating equipment may damage asphalt concrete, and the reserved strip is susceptible to rainwater intrusion, affecting its quality.
The construction equipment for post-treatment of cold joints in hydraulic asphalt concrete anti-seepage panels employs a multi-action synergy of thermo-mechanical-chemical processes. Through microwave heating, hot air circulation, and double pressure roller compaction, combined with a fast-drying polyurethane coating, it achieves precise, standardized, and efficient treatment of cold joints.
It enables rapid heating and compaction of cold joints, forming a gradient temperature field, ensuring deep bonding performance of materials, reducing porosity, and providing a temporary protective layer, making it suitable for the stringent seepage prevention requirements of water conservancy projects.
Smart Images
Figure CN224133657U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cold joint treatment technology for asphalt concrete, specifically to a construction equipment for post-treatment of cold joints in hydraulic asphalt concrete anti-seepage panels. Background Technology
[0002] As a commonly used seepage prevention structure in water conservancy and hydropower projects, the construction of hydraulic asphalt concrete seepage prevention panels is carried out in sections according to the size of the asphalt concrete paving machinery, typically 3-5 cm wide. During the sectioned construction process, two types of panel joints will be formed: hot joints and cold joints. Hot joints occur when the asphalt concrete of the adjacent already paved section has been pre-compacted but the temperature is still above 80℃ during the paving of the second section. No special treatment is required for the asphalt concrete between the two sections; the joints are compacted together. Cold joints occur when the temperature of the adjacent already paved sections has dropped below 80℃. These include joints formed between the first section of the paved panel each day and joints formed when construction was interrupted for a period of time during the day.
[0003] Currently, the general practice for treating cold joints is as follows: A 10cm section of asphalt concrete from the previous section is left uncompacted; instead, a vibratory compactor is used to press the boundary of the previous section into a 45° angle with the pavement. When continuing to pave the next section, an infrared heater is used to reheat the 10cm section to the temperature required for compaction. Hot asphalt is then applied to the joint surface before paving and compacting the next section of asphalt concrete.
[0004] The current construction methods have the following problems:
[0005] 1. The heating speed of the equipment is insufficient to meet the requirements of the paving speed;
[0006] 2. Due to the limitation of heating speed, the paving speed is slow, which easily causes new cold joints to form in the newly paved strips;
[0007] 3. If high-power heating equipment is used, the surface of the asphalt concrete may be burned, causing quality damage.
[0008] 4. The approximately 10cm allowance is easily penetrated by rainwater, which can affect its quality. Utility Model Content
[0009] The technical problem to be solved by this utility model is that the heating rate in the prior art is difficult to meet the paving speed, which easily leads to the formation of new cold joints in the newly paved strips. Based on this, this utility model proposes a construction equipment for post-treatment of cold joints in hydraulic asphalt concrete anti-seepage panels. Through the synergistic effect of multiple actions of heat, machinery and chemicals, it realizes the precision, standardization and efficiency of cold joint treatment. It has good temperature control and compaction effect, and is particularly suitable for engineering scenarios with strict anti-seepage requirements such as water conservancy hubs and dams.
[0010] This utility model is achieved through the following technical solution:
[0011] This application provides a construction device for post-treatment of cold joints in hydraulic asphalt concrete anti-seepage panels, including a support plate connected to the bottom of a vehicle panel. A primary pressure roller and a secondary pressure roller are rotatably connected to the support plate, and the primary pressure roller and the secondary pressure roller are parallel to each other. A heating mechanism is connected to the front side of the vehicle panel, and a spraying mechanism is connected to the rear side of the vehicle panel.
[0012] The mass of the primary pressure roller is less than the mass of the stimulation pressure roller.
[0013] Furthermore, a connector is installed at the front end of the vehicle panel.
[0014] Furthermore, a power supply and controller are installed on the top of the vehicle platform.
[0015] Furthermore, the spraying mechanism includes a curing agent storage tank installed on the top of the vehicle panel, with a curved pipe connected to the outside of the curing agent storage tank, and a liquid pump connected to the curved pipe. The liquid pump is installed on the top of the vehicle panel. The outlet of the liquid pump is connected to a liquid outlet pipe, and the bottom end of the liquid outlet pipe is connected to a spray pipe. Multiple nozzles are connected to the bottom side of the spray pipe.
[0016] Furthermore, two vertical plates are installed at the bottom of the vehicle platform, and each of the two vertical plates has a slot at its bottom, in which the spray pipe is secured.
[0017] Furthermore, the heating mechanism includes a drying heating box, which is embedded in the vehicle panel. The bottom end of the drying heating box is provided with an outlet, and the rear side of the drying heating box is connected to a drying cylinder.
[0018] Furthermore, the outlet at the bottom of the drying and heating box is a conical outlet.
[0019] Furthermore, a vertical plate two is installed on the rear side of the drying and heating box, and multiple arc-shaped blocks are installed on the inner side of the vertical plate two, each of which is equipped with an infrared sensor head.
[0020] Furthermore, a horizontal mounting plate is installed inside the drying and heating box, and a microwave generator head is installed at the bottom of the horizontal mounting plate. The microwave generator head is connected to the same microwave generator, which is installed at the top of the drying and heating box. The horizontal mounting plate is installed inside the drying and heating box.
[0021] Furthermore, heating resistors are installed inside both the primary and secondary pressure rollers.
[0022] Compared with the prior art, this utility model has at least the following advantages and beneficial effects:
[0023] (1) This utility model achieves precision, standardization and efficiency of cold joint treatment through the synergistic effect of multiple actions of thermo-mechanical-chemical. It has good temperature control and compaction effect, and is particularly suitable for engineering scenarios with strict anti-seepage requirements such as water conservancy hubs and dams.
[0024] (2) This utility model adopts microwave penetration heating, which rapidly heats the inside of the cold seam through the microwave generator head (heating to 120℃ in 30 seconds), breaking through the limitations of traditional surface heating and ensuring the deep bonding performance of the material. Hot air coordinated heating: The hot air circulation system with a conical outlet design simultaneously heats the surface to 80-90℃, avoiding local overheating and carbonization, forming a gradient temperature field (surface 80℃ < middle layer 100℃ < bottom layer 120℃), optimizing the thermal activation effect of the material. Multiple sets of infrared sensors monitor the temperature field at a depth of 0-15cm in real time, dynamically adjust the heating parameters, and control the error within ±5℃.
[0025] (3) The present invention features a double-roller staged compaction. In the initial compaction stage (60℃ / 5MPa), the light primary roller increases the density and reduces the porosity to below 8%. In the secondary compaction stage (normal temperature / 12MPa), the heavy secondary roller eliminates interlayer pores under high pressure, further reducing the porosity to below 3%.
[0026] (4) This utility model can achieve second-level curing spraying. The fast-drying polyurethane coating (curing time <30 seconds) is sprayed through a 6-nozzle array to form a 0.5mm thick temporary protective layer. Attached Figure Description
[0027] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:
[0028] Figure 1 This is a structural schematic diagram of a construction equipment for post-treatment of cold joints in hydraulic asphalt concrete anti-seepage panels proposed in this utility model.
[0029] Figure 2 This is a bottom view structural diagram of a construction equipment for post-treatment of cold joints in hydraulic asphalt concrete anti-seepage panels proposed in this utility model.
[0030] Figure 3 This is a side view of the construction equipment for post-treatment of cold joints in hydraulic asphalt concrete anti-seepage panels proposed in this utility model.
[0031] Figure 4 This is a structural schematic diagram of the drying and heating box, microwave generator, drying cylinder, vertical plate and related parts proposed in this utility model;
[0032] Figure 5 The present utility model proposes Figure 4 A schematic diagram of the structure viewed from below;
[0033] Figure 6 The present utility model proposes Figure 5 A schematic diagram of the side view structure;
[0034] Figure 7 This is a schematic diagram of the microwave generator and horizontal mounting plate proposed in this utility model.
[0035] Figure 8 This is a bottom view of the microwave generator, horizontal mounting plate, and microwave generator head proposed in this utility model.
[0036] The attached diagram shows the markings and corresponding component names:
[0037] 1-Car platform, 11-Connector, 12-Power supply, 13-Controller, 2-Spraying mechanism, 21-Curing agent storage box, 22-Liquid pump, 23-Bend, 24-Discharge pipe, 25-Vertical plate one, 251-Bayonet, 26-Spray pipe, 27-Spray head, 3-Support plate, 31-Primary pressure roller, 32-Secondary pressure roller, 4-Heating mechanism, 41-Drying heating box, 42-Microwave generator, 43-Drying cylinder, 44-Vertical plate two, 45-Infrared sensor head, 46-Conical outlet, 47-Arc-shaped clamp, 48-Horizontal mounting plate, 49-Microwave generator head. Detailed Implementation
[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0041] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, a joint, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0042] Example 1
[0043] like Figures 1-6 As shown, this embodiment provides a construction device for post-treatment of cold joints in hydraulic asphalt concrete anti-seepage panels, including a vehicle plate 1, a spraying mechanism 2, and a heating mechanism 4. Four support plates 3 are fixedly installed at the bottom of the vehicle plate 1. A primary pressure roller 31 and a secondary pressure roller 32 are rotatably installed between the four support plates 3. A connector 11 is installed at the front end of the vehicle plate 1. The mass of the primary pressure roller 31 is less than the mass of the secondary pressure roller 32. The spraying mechanism 2 is installed on the rear side of the vehicle plate 1 for spraying and curing the asphalt cold joint. The heating mechanism 4 is installed on the front side of the vehicle plate 1 for heating the cold joint. A power supply 12 and a controller 13 are fixedly installed on the top of the vehicle plate 1.
[0044] Specifically, refer to Figure 1 , Figure 2 In this embodiment, the spraying mechanism 2 includes a curing agent storage box 21, which is fixedly installed on the top of the vehicle platform 1. A bend 23 is connected to the outside of the curing agent storage box 21, and a liquid pump 22 is connected to the bend 23. The liquid pump 22 is installed on the top of the vehicle platform 1, and a liquid outlet pipe 24 is connected to the outlet of the liquid pump 22. A spray pipe 26 is connected to the bottom of the liquid outlet pipe 24, and seven nozzles 27 are connected to the bottom of the spray pipe 26. Two vertical plates 25 are fixedly installed on the bottom of the vehicle platform 1. Each of the two vertical plates 25 has a slot 251 at its bottom, and the spray pipe 26 is locked in the two slots 251.
[0045] Specifically, refer to Figures 4-8In this embodiment, the heating mechanism 4 includes a drying heating box 41, which is embedded in the vehicle panel 1. The bottom end of the drying heating box 41 is conical, and a conical outlet 46 is provided at the bottom end of the drying heating box 41. A drying cylinder 43 is connected to the rear side of the drying heating box 41. A vertical plate 44 is fixedly installed on the rear side of the drying heating box 41. Six arc-shaped locking blocks 47 are fixedly installed on the inner side of the vertical plate 44. An infrared sensor head 45 is installed on each of the six arc-shaped locking blocks 47. A horizontal mounting plate 48 is installed inside the drying heating box 41. Six microwave generating heads 49 are installed at the bottom of the horizontal mounting plate 48. The six microwave generating heads 49 are connected to the same microwave generator 42. The microwave generator 42 is installed on the top of the drying heating box 41. The horizontal mounting plate 48 is installed inside the drying heating box 41.
[0046] Working principle: When using this hydraulic asphalt concrete anti-seepage panel cold joint post-treatment construction equipment, connect the power supply 12 and controller 13, connect the connector 11 to the power unit, and the power unit pulls the heating mechanism 4 to the cold joint position. The drying cylinder 43 blows hot air into the drying heating box 41, and then sprays it out through the conical outlet 46 to heat the cold joint. The microwave generator 42 emits microwaves through six microwave generator heads 49, which heat the cold joint position. The microwaves quickly penetrate the heating reserved strip and rise to 120℃ within 30 seconds. The hot air circulation system simultaneously heats the surface to 80-90℃ to avoid local overheating. Temperature gradient control: surface 80℃ < middle layer 100℃ < bottom layer 120℃. The six infrared sensor heads 45 are used to monitor the temperature of the cold joint position. Infrared temperature measurement array: 6 sets of infrared sensors are arranged along the longitudinal direction of the joint to monitor the temperature field at a depth of 0-15cm in real time. The cold seam is compacted by primary pressure roller 31 and secondary pressure roller 32. Primary pressure roller 31 is the initial pressing stage: the front roller rolls at 60℃ with low pressure of 5MPa to increase density. Secondary pressure roller 32 is the secondary pressing stage: the rear roller rolls at room temperature with high pressure of 12MPa to eliminate interlayer porosity.
[0047] The curing agent storage tank 21 contains fast-drying polyurethane coating. When the liquid pump 22 is working, the fast-drying polyurethane coating can be delivered into the spray pipe 26 through the cooperation of the bend pipe 23 and the outlet pipe 24. The fast-drying polyurethane coating can be sprayed onto the cold joint of the asphalt through the six nozzles 27. The curing time of the sprayed fast-drying polyurethane coating is less than 30 seconds, which serves as temporary protection.
[0048] Example 2
[0049] Based on Embodiment 1, this embodiment provides a construction device for post-treatment of cold joints in hydraulic asphalt concrete anti-seepage panels. Unlike Embodiment 1, the primary pressure roller 31 and the secondary pressure roller 32 in this embodiment both have built-in heating resistors, while other structural features are the same as in Embodiment 1.
[0050] Compared with Example 1, this example incorporates heating resistors in both the primary pressure roller 31 and the secondary pressure roller 32. The primary pressure roller 31 (300mm in diameter) is heated to 60°C, while the secondary pressure roller 32 (400mm in diameter) is kept at room temperature. During equipment operation, the pressure-temperature values are fed back to the controller, which controls the operation of the heating mechanism, making the heating mechanism stable and controllable, and resulting in higher quality asphalt concrete.
[0051] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A cold joint post-processing construction equipment for a hydraulic asphalt concrete impervious face panel, characterized by, Includes a support plate (3) connected to the bottom of the vehicle plate (1), on which a primary pressure roller (31) and a secondary pressure roller (32) are rotatably connected, the primary pressure roller (31) and the secondary pressure roller (32) being parallel to each other; a heating mechanism (4) is connected to the front side of the vehicle plate (1), and a spraying mechanism (2) is connected to the rear side of the vehicle plate (1).
2. A cold joint post-processing construction equipment for a hydraulic asphalt concrete impervious face slab according to claim 1, characterized in that, A connector (11) is installed at the front end of the vehicle body (1).
3. A cold joint post-processing construction equipment for a water engineering asphalt concrete impervious face panel according to claim 1, characterized in that, A power supply (12) and a controller (13) are installed on the top of the vehicle panel (1).
4. A cold joint post-processing construction equipment for a water engineering asphalt concrete impervious face panel according to claim 1, characterized in that, The spraying mechanism (2) includes a curing agent storage box (21) installed on the top of the vehicle platform (1). A bend (23) is connected to the outside of the curing agent storage box (21). A liquid pump (22) is connected to the bend (23). The liquid pump (22) is installed on the top of the vehicle platform (1). The outlet of the liquid pump (22) is connected to a liquid outlet pipe (24). The bottom end of the liquid outlet pipe (24) is connected to a spray pipe (26). Multiple nozzles (27) are connected to the bottom side of the spray pipe (26).
5. A cold joint post-processing construction apparatus for a water engineering asphalt concrete impervious face panel according to claim 4, characterized in that, Two vertical plates (25) are installed at the bottom of the vehicle plate (1). Each of the two vertical plates (25) has a slot (251) at its bottom, and the spray pipe (26) is inserted into the two slots (251).
6. A cold joint post-processing construction equipment for a hydraulic asphalt concrete impervious face slab according to claim 1, characterized in that, The heating mechanism (4) includes a drying heating box (41), which is embedded in the vehicle board (1). The bottom end of the drying heating box (41) is provided with an outlet, and the rear side of the drying heating box (41) is connected to a drying cylinder (43).
7. A cold joint post-processing construction equipment for a hydraulic asphalt concrete impervious face slab according to claim 6, characterized in that, The outlet at the bottom of the drying and heating box (41) is a conical outlet (46).
8. A cold joint post-processing construction equipment for a hydraulic asphalt concrete impervious face slab according to claim 6, characterized in that, A vertical plate (44) is installed on the rear side of the drying and heating box (41), and multiple arc-shaped blocks (47) are installed on the inner side of the vertical plate (44). Each arc-shaped block (47) is equipped with an infrared sensor head (45).
9. A cold joint post-processing construction equipment for a hydraulic asphalt concrete impervious face slab according to claim 6, characterized in that, A horizontal mounting plate (48) is installed inside the drying and heating box (41). A microwave generator head (49) is installed at the bottom of the horizontal mounting plate (48). The microwave generator head (49) is connected to the same microwave generator (42). The microwave generator (42) is installed at the top of the drying and heating box (41). The horizontal mounting plate (48) is installed inside the drying and heating box (41).
10. A cold joint post-processing construction equipment for a hydraulic asphalt concrete impervious face slab according to claim 1, characterized in that, Heating resistors are installed inside both the primary pressure roller (31) and the secondary pressure roller (32).