Lateral maintenance spraying device for water-stable structural layer of pavement engineering

Abstract

According to the lateral maintenance spraying device for the water-stable structural layer of the pavement engineering, a watering cart runs to the position close to the water-stable layer to be maintained but does not run into the surface of an operation layer, a folding pipeline assembly is unfolded from one side or multiple sides of a cart body, and a suspended structure transverse or perpendicular to the running direction is formed; water in a water tank of the watering cart is conveyed to the fixed pipeline assembly and enters the folding pipeline assembly, then a spray head evenly sprays and maintains the surface of a water stable layer through a plurality of outlets, the water stable layer to be maintained can be sprayed through the spray head, intelligent maintenance control is achieved, and after spraying is finished, the folding pipeline assembly is folded to the cart body and recovers the transportation state. Spraying is suspended on the side of the watering cart through the foldable folding pipeline assembly, spraying can be completed without directly driving the watering cart into the surface of a water stable layer, the problems that the compactness of the water stable layer is reduced, the structure is loosened, and the strength is damaged due to self-weight rolling of a traditional watering cart are thoroughly solved, the initial maintenance quality of the water stable layer is improved, and the service life of a road is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of road maintenance, specifically to a lateral maintenance spraying device for the water-stabilized structural layer of road engineering. Background Technology

[0002] During the construction of water-stabilized layers in highway engineering, after compaction and inspection, geotextile is often used to cover the highway project, and then the geotextile is watered for curing.

[0003] The current practice is to directly spray water on the newly paved working layer by driving water trucks. Because the water trucks are very heavy, they directly roll over the working layer during the maintenance period. As a result, the road construction is damaged in strength and the water-stabilized layer due to the rolling of the water trucks on the working layer.

[0004] Secondly, existing water trucks, due to their direct-pipe spraying during maintenance, generate significant water pressure. When sprayed directly onto the road surface, this pressure can damage the structural layer, causing cement slurry to run off and hindering subsequent curing. Furthermore, the high water pressure can create potholes and other imperfections, requiring later filling and rework, thus slowing down the construction progress. Utility Model Content

[0005] This utility model provides a lateral maintenance spraying device for the water-stabilized structural layer of road engineering to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides a lateral curing spraying device for the water-stabilized structural layer of road engineering, comprising:

[0007] A fixed pipe assembly has an inlet connected to a water truck, and the fixed pipe assembly is installed on the water truck;

[0008] A folded pipe assembly having multiple outlets, the folded pipe assembly being rotatably connected to the fixed pipe assembly, and each of the outlets being connected to the inlet;

[0009] Multiple nozzles, each of the outlets being connected to one of the nozzles;

[0010] Specifically, the folding pipe assembly is rotated relative to the water truck to fold or unfold the folding pipe assembly, ultimately allowing the nozzle to spray the road surface to be maintained.

[0011] Preferably, the folded pipe assembly comprises multiple sets, which are respectively located in front of, to the side of, and behind the sprinkler truck.

[0012] Preferably, each group of the folded pipe assemblies includes:

[0013] A reversing bearing, one end of which is fixed to the fixed pipe assembly;

[0014] A connecting pipe is connected at one end to the reversing bearing away from the fixed pipe assembly, and at the other end to the nozzle. The outlet is located on the connecting pipe, and the connecting pipe is connected to the reversing bearing.

[0015] Preferably, the fixed pipe assembly includes:

[0016] The installation pipe has the inlet, and the installation pipe is installed at the water outlet of the sprinkler truck and connected to the water outlet of the sprinkler truck.

[0017] A ball valve, one end of which is connected to the installation pipe, and the other end of which is connected to the connecting pipe.

[0018] Preferably, the fixed pipe assembly further includes:

[0019] The water pump is connected at one end to the inlet and at the other end to the outlet of the sprinkler truck.

[0020] Preferably, the distance between two adjacent outlets is denoted as a, which satisfies the relationship: 20cm≤a≤40cm.

[0021] Preferably, the following relationship is satisfied: a = 30cm.

[0022] Preferably, the fixed pipe assembly includes:

[0023] The fastener is fixed at one end to the water truck and at the other end to the installation pipe.

[0024] Preferably, the folded pipe assembly further includes:

[0025] A hydraulic drive unit, one end of which is fixed to the sprinkler truck and the other end of which is fixed to the connecting pipe;

[0026] The hydraulic drive component moves to drive the connecting pipe to rotate around the reversing bearing, so that the connecting pipe can be unfolded or folded relative to the sprinkler truck.

[0027] Preferably, the lateral maintenance spraying device for the water-stabilized structural layer of the road surface further includes:

[0028] An image acquisition device is disposed on the fixed pipe assembly or the folded pipe assembly.

[0029] The lateral curing spraying device for the water-stabilized structural layer of road engineering proposed in this utility model has the following beneficial effects:

[0030] The lateral maintenance spraying device for water-stabilized structural layers in road engineering proposed in this utility model allows a water truck to drive to the vicinity of the water-stabilized layer to be maintained, but without entering the surface of the working layer. The folded pipe assembly is unfolded from one or more sides of the vehicle body, forming a suspended structure that is horizontal or perpendicular to the direction of travel. Water from the water tank of the water truck is transported to the fixed pipe assembly, enters the folded pipe assembly, and then the nozzles spray the surface of the water-stabilized layer evenly through multiple outlets for maintenance. The water-stabilized layer to be maintained can be sprayed through the nozzles, realizing intelligent maintenance control. After spraying, the folded pipe assembly is retracted into the vehicle body, restoring the transport state.

[0031] The spraying system is suspended on the side of the vehicle via a foldable pipe assembly, allowing the water truck to spray without directly driving onto the surface of the water-stabilized layer. This completely avoids problems such as reduced compaction, structural loosening, and strength damage to the water-stabilized layer caused by the weight of the traditional water truck, thus improving the initial maintenance quality of the water-stabilized layer and effectively ensuring the service life of the highway.

[0032] The nozzles are distributed at multiple outlets, ensuring even water spraying and moderate pressure. Unlike traditional "point-like high-pressure spraying," this device achieves "area-like flexible spraying," greatly reducing the impact of water pressure on the surface, effectively preventing cement slurry from being washed away, avoiding pit formation and repeated repairs, and improving curing effect and construction efficiency. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the lateral maintenance spraying device for the water-stabilized structural layer of road surface engineering in this utility model;

[0034] Figure 2 This is a reference diagram showing the usage status of the lateral maintenance spraying device for the water-stabilized structural layer of road surface engineering in this utility model.

[0035] In the picture:

[0036] 100. Lateral curing spraying device for water-stabilized structural layers in road engineering;

[0037] 110. Fixed piping assembly; 111. Piping installation; 112. Ball valve; 113. Water pump;

[0038] 120. Folded pipe assembly; 121. Reversing bearing; 122. Connecting pipe;

[0039] 130. Sprayer head.

[0040] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0042] It should be noted that in the description of this utility model, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] This utility model provides a lateral maintenance spraying device 100 for water-stabilized structural layers in road engineering, comprising:

[0044] The fixed pipe assembly 110 has an inlet (not shown in the figure), the inlet is connected to the water truck, and the fixed pipe assembly 110 is installed on the water truck;

[0045] The folded pipe assembly 120 has multiple outlets (not shown in the figure), the folded pipe assembly 120 is rotatably connected to the fixed pipe assembly 110, and each of the outlets is connected to the inlet;

[0046] Multiple nozzles 130, each of the outlets being connected to one of the nozzles 130;

[0047] Specifically, the folding pipe assembly 120 is rotated relative to the water truck to fold or unfold the folding pipe assembly 120, ultimately allowing the nozzle 130 to spray the road surface to be maintained.

[0048] Please refer to Figures 1-2 In this embodiment, the water truck drives to the vicinity of the water-stabilized layer to be maintained, but does not drive into the surface of the working layer. The folded pipe assembly 120 is unfolded from one or more sides of the vehicle body to form a suspended structure that is horizontal or perpendicular to the direction of travel. Water in the water tank of the water truck is transported to the fixed pipe assembly 110 and enters the folded pipe assembly 120. Then, the nozzles 130 spray the surface of the water-stabilized layer evenly through multiple outlets for maintenance. The water-stabilized layer to be maintained can be sprayed through the nozzles 130 to achieve intelligent maintenance control. After the spraying is completed, the folded pipe assembly 120 is folded back into the vehicle body and the transport state is restored.

[0049] The spraying is suspended on the side of the vehicle through a foldable pipe assembly 120, which allows the water truck to complete the spraying without driving directly onto the surface of the water-stabilized layer. This completely avoids the problems of reduced compaction, structural loosening, and strength damage to the water-stabilized layer caused by the weight of the water truck, thus improving the initial maintenance quality of the water-stabilized layer and effectively ensuring the service life of the highway.

[0050] The nozzles 130 are distributed at multiple outlets, ensuring uniform water spraying and moderate pressure. Unlike traditional "point-like high-pressure spraying," this device achieves "area-like flexible spraying," which greatly reduces the impact of water pressure on the surface, effectively prevents cement slurry from being washed away, avoids pit formation and repeated repairs, and improves curing effect and construction efficiency.

[0051] It should be noted that nozzle 130 is a shower head.

[0052] Preferably, the folded pipe assembly 120 includes multiple sets, and the multiple sets of the folded pipe assembly 120 are respectively located in front of, to the side of and behind the sprinkler truck.

[0053] Please refer to Figures 1-2 In this embodiment, the folding pipe assembly 120 is configured as multiple structures, which are respectively arranged in front, side and rear of the sprinkler truck. The front folding pipe sprays the area in front when the sprinkler truck moves forward; the side folding pipes are suspended on both sides of the sprinkler truck to achieve lateral suspended spraying; the rear folding pipe is suitable for spraying the area behind the vehicle when the vehicle is reversing or parked.

[0054] The water truck travels to the outer edge of the maintenance area without entering the water-stabilized layer construction surface. Each set of folding pipe components 120 unfolds to a preset angle as needed, such as horizontal or downward. Each set of nozzles 130 starts working, spraying water simultaneously or independently to maintain the areas in front, to the side, and behind the vehicle. Depending on the construction section, the direction of travel of the water truck, or operational needs, one or more sets of folding components can be flexibly opened. After the spraying operation is completed, all folding pipe components 120 are folded to one side of the vehicle and returned to the transport state.

[0055] Compared to traditional unidirectional spraying, this device can achieve all-round three-dimensional spraying. During a single trip, the water truck can simultaneously complete maintenance work in multiple areas, including the front, sides, and rear, reducing omissions and improving efficiency. This structure can play a more effective multi-directional synergistic role, especially in wide roads or multi-lane construction.

[0056] Preferably, each group of the folded pipe assembly 120 includes:

[0057] One end of the reversing bearing 121 is fixed to the fixed pipe assembly 110;

[0058] The connecting pipe 122 is connected at one end to the end of the reversing bearing 121 away from the fixed pipe assembly 110, and at the other end to the nozzle 130. The outlet is located on the connecting pipe 122, and the connecting pipe 122 is connected to the reversing bearing 121.

[0059] Please refer to Figures 1-2 In this embodiment, the water truck uses a water pump 113 to pressurize water into a fixed pipe assembly 110 installed on the vehicle body. The water flows through the fixed pipe assembly 110 into a reversing bearing 121. The reversing bearing 121 allows rotation while maintaining unobstructed internal water passages. Under hydraulic or manual drive, the connecting pipe 122 rotates around the reversing bearing 121 to unfold or fold. When the connecting pipe 122 unfolds to the designated position, the water flows through the connecting pipe 122 to the outlet above it and sprays the surface of the water-stabilized layer through the nozzle 130 for maintenance. After spraying, the connecting pipe 122 can rotate around the reversing bearing 121 again and retract to one side of the vehicle body, facilitating vehicle movement or entry into the next construction section.

[0060] Since the connecting pipe 122 can rotate around the reversing bearing 121, the nozzle 130 can adjust its angle according to the position of the curing layer, adapting to construction sections with different slopes and widths, thereby improving the uniformity of spraying and the effective coverage area.

[0061] It should be noted that the reversing bearing 121 is roughly a radial spherical bearing, and the connecting pipe 122 is a hollow pipe.

[0062] Preferably, the fixed pipe assembly 110 includes:

[0063] The installation pipe 111 has the inlet and is installed at the water outlet of the sprinkler truck and connected to the water outlet of the sprinkler truck.

[0064] The ball valve 112 has one end connected to the installation pipe 111 and the other end connected to the connecting pipe 122.

[0065] Please refer to Figures 1-2 In this embodiment, the water truck starts the water pump 113, and water enters the installation pipe 111 through the outlet. After flowing through the installation pipe 111, the water enters the ball valve 112. The operator can manually or automatically control the water flow switch through the ball valve 112. When the ball valve 112 is opened, the water flows through it into the connecting pipe 122, and finally reaches the folded pipe assembly 120 and each nozzle 130. The nozzles 130 spray water evenly onto the surface of the water-stabilized layer for moist curing.

[0066] The ball valve 112 enables the spraying system to precisely control the water flow, allowing the water stabilization spraying system to be started and stopped independently without affecting other functions of the water truck, thus achieving precise and controllable maintenance operations and avoiding overspraying or underspraying.

[0067] Ball valve 112 is a multi-channel control device that independently controls 130 groups of different areas or nozzles, meeting the refined management needs of different road sections and different spraying intensities, and improving construction adaptability and efficiency.

[0068] It should be noted that the installation pipe 111 is roughly a hollow pipe, and the ball valve 112 is roughly a three-way ball valve 112.

[0069] Preferably, the fixed pipe assembly 110 further includes:

[0070] The water pump 113 is connected at one end to the inlet and at the other end to the outlet of the sprinkler truck.

[0071] Please refer to Figures 1-2 In this embodiment, the water truck stores water in its water tank. After the water pump 113 is started, water is drawn and pressurized from the water outlet of the water truck. The pressurized water flows into the installation pipe 111 and flows through the ball valve 112 to the connecting pipe 122. The water continues to be delivered to each nozzle 130 and sprayed evenly through multiple outlets. After the spraying is completed, the water pump 113 is turned off, the water flow stops, and the system enters standby or retraction state.

[0072] Water pump 113 provides continuous and stable water pressure output, ensuring that all nozzles 130 work simultaneously and evenly. For water-stabilized layers, even spraying is key to the maintenance effect and helps prevent uneven surface strength.

[0073] The water pump 113 can effectively compensate for the pressure loss of the remote nozzle 130, ensuring its spraying effect, supporting synchronous multi-area spraying over longer distances and larger areas, and improving work efficiency.

[0074] Preferably, the distance between two adjacent outlets is denoted as a, which satisfies the relationship: 20cm≤a≤40cm.

[0075] Please refer to Figures 1-2 In this embodiment, when the system is running, water is transported through the connecting pipe 122 to the nozzles 130 along each outlet and sprayed onto the surface of the water-stabilized layer. Because the spacing between the nozzles 130 is set between 20cm and 40cm, the water mist spray coverage areas overlap appropriately, achieving seamless coverage and uniform wetting. By controlling the spacing within the range of 20cm to 40cm, the spraying effect is both uniform and not excessive, achieving the best water-stabilized layer maintenance effect.

[0076] Preferably, the following relationship is satisfied: a = 30cm.

[0077] Please refer to Figures 1-2 In this embodiment, the horizontal distance between any two adjacent nozzles 130 is 30 centimeters. During operation, the nozzles 130 are evenly arranged on the connecting pipe 122 through this spacing, so that the water mist sprayed by each nozzle 130 forms a moderate overlap on the road surface, achieving a comprehensive, uniform, and non-accumulated wetting effect. After spraying, the surface of the water-stabilized layer is consistently wetted, the structure is uniform, and the cement slurry is stably retained, providing an ideal environment for subsequent maintenance and curing.

[0078] Ensure uniform spraying and consistent moisture levels to prevent cracking, peeling, and rework of the curing layer later.

[0079] Preferably, the fixed pipe assembly 110 includes:

[0080] The fastener (not shown in the figure) is fixed at one end to the water truck and at the other end to the installation pipe 111.

[0081] Please refer to Figures 1-2 In this embodiment, the fastener is a structural connection device used to securely install the installation pipe 111 on the body structure of the sprinkler truck. One end of the fastener is connected to the sprinkler truck body, and the other end is securely connected to the installation pipe 111.

[0082] During the spraying process, the water truck is in motion. The road surface is uneven and the equipment vibrates frequently. The fasteners ensure that the installation pipe 111 is firmly installed on the vehicle body, without shaking or slipping, effectively preventing malfunctions such as loosening of pipe joints and leakage caused by water pressure or driving bumps.

[0083] Ensure that the force at the fulcrum meets the support force of the installed pipe 111 and the folded pipe assembly 120. The fastener is roughly a bracket, which is fixed by welding.

[0084] Preferably, the folded pipe assembly 120 further includes:

[0085] A hydraulic drive unit (not shown in the figure) is fixed at one end to the sprinkler truck and at the other end to the connecting pipe 122;

[0086] The hydraulic drive component moves to drive the connecting pipe 122 to rotate around the reversing bearing 121, so that the connecting pipe 122 can be unfolded or folded relative to the sprinkler truck.

[0087] Please refer to Figures 1-2In this embodiment, when the water truck drives to the vicinity of the work area, the system enters the work preparation state, starts the hydraulic system, and the hydraulic drive component is activated, pushing the connecting pipe 122 to rotate around the reversing bearing 121. As the hydraulic drive component extends or retracts, the connecting pipe 122 gradually unfolds from one side of the vehicle body to the working posture. After the spraying operation is completed, the hydraulic drive component moves in the opposite direction, driving the connecting pipe 122 to fold back and store on one side of the vehicle body. The entire process is automatically driven by the hydraulic system, which is precise, stable and controllable.

[0088] With hydraulic drive components, the system can be unfolded / folded with one click, which is highly efficient and easy to operate, and is especially suitable for construction scenarios with high-frequency unfolding operations or variable spraying sections.

[0089] The hydraulic drive component can be set with a specific stroke length and control angle, and can precisely control the unfolding angle of the connecting pipe 122 (such as horizontal, downward, etc.) to ensure the consistency and accuracy of the nozzle 130 orientation and spraying path, and avoid mis-spraying or omission.

[0090] Preferably, the lateral maintenance spraying device 100 for the water-stabilized structural layer of the road surface further includes:

[0091] An image acquisition device (not shown in the figure) is disposed on the fixed pipe assembly 110 or the folded pipe assembly 120.

[0092] Please refer to Figures 1-2 In this embodiment, before the operation begins, the image acquisition device is activated to acquire real-time images of the road surface area to be sprayed. The images are transmitted to the control system, which can identify the boundary of the water-stabilized layer, identify the cured and uncured areas, determine whether the spraying is uniform, whether there are any missed areas or areas with oversaturated water mist, and monitor the operating status of the nozzle 130 in real time to see if there is any blockage or deviation. Based on this, the control system can control the hydraulic drive components, the opening and closing of the nozzle 130, the opening and closing of the ball valve 112, and the pressure of the water pump 113 to achieve intelligent adjustment and precise control of the spraying range and effect.

[0093] It should be noted that the image acquisition device is a camera.

[0094] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A lateral curing spraying device for a water-stabilized structural layer in road engineering, characterized in that, include: A fixed pipe assembly has an inlet connected to a water truck, and the fixed pipe assembly is installed on the water truck; A folded pipe assembly having multiple outlets, the folded pipe assembly being rotatably connected to the fixed pipe assembly, and each of the outlets being connected to the inlet; Multiple nozzles, each of the outlets being connected to one of the nozzles; Specifically, the folding pipe assembly is rotated relative to the water truck to fold or unfold the folding pipe assembly, ultimately allowing the nozzle to spray the road surface to be maintained.

2. The lateral curing spraying device for the water-stabilized structural layer of road engineering as described in claim 1, characterized in that, The folded pipe assembly comprises multiple sets, which are located in front of, to the side of, and behind the sprinkler truck, respectively.

3. The lateral curing spraying device for the water-stabilized structural layer of road engineering as described in claim 1, characterized in that, Each set of the folded pipe assembly includes: A reversing bearing, one end of which is fixed to the fixed pipe assembly; A connecting pipe is connected at one end to the reversing bearing away from the fixed pipe assembly, and at the other end to the nozzle. The outlet is located on the connecting pipe, and the connecting pipe is connected to the reversing bearing.

4. The water-stabilized structural layer for road engineering as described in claim 3 The lateral maintenance spraying device is characterized in that, The fixed pipe assembly includes: The installation pipe has the inlet, and the installation pipe is installed at the water outlet of the sprinkler truck and connected to the water outlet of the sprinkler truck. A ball valve, one end of which is connected to the installation pipe, and the other end of which is connected to the connecting pipe.

5. The lateral curing spraying device for the water-stabilized structural layer of road engineering as described in claim 4, characterized in that, The fixed pipe assembly also includes: The water pump is connected at one end to the inlet and at the other end to the outlet of the sprinkler truck.

6. The lateral curing spraying device for the water-stabilized structural layer of road engineering as described in claim 3, characterized in that, The distance between two adjacent outlets is denoted as a, which satisfies the relationship: 20cm≤a≤40cm.

7. The lateral curing spraying device for the water-stabilized structural layer of road engineering as described in claim 3, characterized in that, The following relationship is satisfied: a = 30cm.

8. The lateral curing spraying device for the water-stabilized structural layer of road engineering as described in claim 4, characterized in that, The fixed pipe assembly includes: The fastener is fixed at one end to the water truck and at the other end to the installation pipe.

9. The lateral curing spraying device for the water-stabilized structural layer of road engineering as described in claim 3, characterized in that, The folded pipe assembly also includes: A hydraulic drive unit, one end of which is fixed to the sprinkler truck and the other end of which is fixed to the connecting pipe; The hydraulic drive component moves to drive the connecting pipe to rotate around the reversing bearing, so that the connecting pipe can be unfolded or folded relative to the sprinkler truck.

10. The lateral curing spraying device for the water-stabilized structural layer of road engineering as described in claim 1, characterized in that, The lateral maintenance spraying device for the water-stabilized structural layer of the road surface engineering also includes: An image acquisition device is disposed on the fixed pipe assembly or the folded pipe assembly.

Images