Roadbase maintenance device and maintenance method

Abstract

The invention belongs to the technical field of pavement maintenance, and particularly discloses a road base maintenance device and method, and the maintenance device comprises a spraying unit and a control unit; the spraying unit is arranged on the surface of a road base and is arranged along the axis of a road; the control unit is respectively connected with the spraying unit and the road base; the spraying units are arranged along the axis of the road and arranged on the surface of the road base layer to directly spray water to the base layer, so that water can permeate into the base layer more directly and more uniformly, additional mechanical intervention is not needed, and physical interference and damage risks to the base layer are reduced; meanwhile, the control unit is connected with the spraying unit and the road base, so that the control unit can automatically adjust the spraying strength and frequency according to the moisture content in the road base, it is ensured that the road base can be properly maintained under different environmental conditions, the maintenance efficiency is effectively improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of road surface maintenance, and more specifically, relates to a road base maintenance device and a maintenance method. Background Art

[0002] In road construction, common base materials include cement stabilized soil, cement lime stabilized soil and cement stabilized gravel. After the construction of these bases is completed, they need to be maintained in time to ensure the stability and durability of their structures. Traditional maintenance methods usually rely on sprinkler trucks to spray water on the newly laid base, but this method often causes damage to the base that is still in the early stages of hardening due to repeated rolling by vehicles. In some cases, this damage may cause the base plate to break, seriously reducing its bearing capacity, thus posing a potential threat to the quality of the entire project.

[0003] In the prior art, in order to solve the above problems, a Chinese patent with publication number CN116200987A discloses a spray-type safe maintenance method for a road water-stable base layer, which adopts a mesh transparent pressure-resistant plastic hose to process a spray pipe, and uses a steel needle to poke through holes in the pipe wall at intervals; a pipe diameter conversion joint is made, and the pipe diameter conversion joint connects one end of the spray pipe with a water pipe, and the plug at the other end of the spray pipe is sealed with a garden wedge of a corresponding diameter and tied with a thin iron wire; the spray system is assembled, the water pipe is connected to a submersible pump or a water supply source, and both ends of the spray pipe are tied to a support pole, and a traction rope is tied to both ends of the support pole; the support pole and the spray pipe are placed on the surface of the road water-stable base layer, and the support pole and the spray pipe are slowly dragged by the traction rope to move along the road water-stable base layer section, during which the spray pipe sprays and maintains the road water-stable base layer through the through holes in the pipe wall.

[0004] Although the above patent can effectively reduce the degree of damage to roads caused by traditional maintenance methods, it cannot solve some problems existing in the existing new road base maintenance equipment, such as (1) during spray maintenance, the maintenance equipment needs to be moved by manpower or machinery, resulting in increased labor costs or complex construction; (2) it is impossible to accurately control the amount of spray water, which easily leads to inadequate maintenance or waste of water resources. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a road base maintenance device and a maintenance method, which directly sprinkles water on the base by arranging the spray unit along the road axis and on the surface of the road base, so that water can penetrate into the base more directly and evenly without additional mechanical intervention, thereby reducing the physical interference and damage risk to the base; at the same time, through the connection between the control unit, the spray unit and the road base, the control unit can automatically adjust the spray intensity and frequency according to the moisture content in the road base, ensuring that the road base can be properly maintained under different environmental conditions, thereby effectively improving the maintenance efficiency, reducing manual operations, reducing labor intensity, and helping to save water resources, reduce energy consumption, and avoid softening or damage of the base due to excessive watering, and drying and insufficient strength of the base due to insufficient watering.

[0006] In order to achieve the above-mentioned object, the first aspect of the present invention provides a road base maintenance device, comprising: a spray unit and a control unit, wherein:

[0007] The spray unit is arranged on the surface of the road base and along the road axis, and is used to provide a stable water source and evenly spray clean water on the surrounding road bases;

[0008] The control unit is connected to the spray unit and the road base, respectively, and includes: a solenoid valve, a humidity sensor and a controller; the solenoid valve is connected to the support pipe; a plurality of humidity sensors are evenly distributed on the surface of the road base around the adjacent support pipe, and their probes are buried in the road base; the controller is arranged outside the support pipe, and is in communication and / or electrically connected with the solenoid valve and the humidity sensor, respectively;

[0009] The humidity sensor monitors the humidity changes inside the road base in real time, and transmits the moisture content data to the controller, so that the controller automatically determines to open or close the solenoid valve based on these data, thereby adjusting the spray unit to perform spray maintenance operations.

[0010] Furthermore, the spray unit includes: a water supply main, the support pipe, a telescopic rod and a rotating nozzle; the water supply main is arranged on the surface of the road base and along the road axis, and several water supply mains are detachably connected through a three-way joint; the support pipe is detachably connected to the side end joint of the three-way joint; the telescopic rod is arranged at the upper end of the support pipe, and it is a hollow telescopic rod; the rotating nozzle is arranged at the upper end of the telescopic rod.

[0011] Furthermore, the support tube is erected on the road base through a triangular support, the outer side of the lower end of the telescopic rod is closedly connected to the support tube, and its lower end is arranged inside the support tube and is detachably connected to the side end joint of the three-way joint through a hose.

[0012] Furthermore, the water supply main pipe has a diameter of 100 to 120 mm and a length of 2.8 to 3.2 m;

[0013] The three-way joint is a PVC joint;

[0014] The support tube is a PVC tube with a diameter of 20 to 30 mm;

[0015] The telescopic rod is a stainless steel telescopic rod, and the total height of the telescopic rod and the support tube after extension is 2 to 2.3 m.

[0016] Furthermore, the upper limit moisture content of the cement-stabilized gravel base is set to 8%, and the lower limit moisture content is set to 4%; the upper limit moisture content of the cement-lime-stabilized soil base is set to 23%, and the lower limit moisture content is set to 16%; the upper limit moisture content of the cement-stabilized soil base is set to 23%, and the lower limit moisture content is set to 16%.

[0017] Furthermore, there are at least four humidity sensors, and the horizontal distance between the humidity sensors and the support tube is 1.5 to 2.5 m.

[0018] Furthermore, the controller is provided with a power supply inside and a digital display screen outside, and the digital display screen can display the moisture content data of a plurality of humidity sensors connected to the controller;

[0019] The controller is provided with a manual switch.

[0020] Furthermore, the controller maintains a communication connection with the control terminal, and the control terminal can remotely control each controller to open and close the solenoid valve;

[0021] The solenoid valve comprises an automatic solenoid valve or a pilot solenoid valve.

[0022] A second aspect of the present invention provides a road base maintenance method, which is implemented by using the above-mentioned maintenance device, and comprises the following steps:

[0023] S1: stock the maintenance device according to the road base size and check whether the maintenance device is damaged;

[0024] S2: Connecting the solenoid valve, the humidity sensor and the controller, and pre-assembling the solenoid valve and the controller onto the support tube respectively;

[0025] S3: After the road base is paved, a layer of geotextile is covered on the surface of the base, and the water supply main is assembled through a tee joint on the road axis;

[0026] S4: placing a preassembled support pipe on the upper end of the three-way joint, and connecting the preassembled support pipe to the water supply main pipe through the three-way joint;

[0027] S5: Connect the water supply main to the water supply source, conduct a trial run, and after confirming normal spraying, officially activate the maintenance device;

[0028] S6: When the moisture content of the road base reaches the set upper limit, the controller controls the solenoid valve to cut off water and stop spraying; when the moisture content of the road base reaches the set lower limit, the controller controls the solenoid valve to supply water and start spraying;

[0029] S7: During the maintenance period, the moisture content of the road base is manually checked regularly, and damaged parts are repaired and replaced. When the maintenance period is over, the water supply is turned off and the maintenance device is removed for reuse.

[0030] Furthermore, according to the upper and lower limits of the corresponding moisture content of the road base material and the moisture content data of the plurality of humidity sensors, the spray intensity controlled by the solenoid valve is calculated and confirmed:

[0031]

[0032] Where I(t) is the spray intensity at the current moment; I(t-1) is the spray intensity at the previous moment; k p is the proportional constant; k i is the integration constant; T is the sampling period; e(t) is the error at the current moment, and e(t) = W set -W(t);W set is the set moisture content, W 上 To set the upper limit, W 下 is the lower limit value; W(t) is the moisture content at the current moment;

[0033] W(t) is obtained as follows:

[0034]

[0035] Where W(t) is the moisture content at the current moment; W i (t) is the moisture content measurement value of the i-th humidity sensor at the current moment; w i is the weight of the i-th humidity sensor.

[0036] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0037] 1. The maintenance device of the present invention directly sprinkles water on the base layer by arranging the spray unit along the road axis and setting it on the surface of the road base layer, so that water can penetrate into the base layer more directly and evenly without additional mechanical intervention, thereby reducing the physical interference and damage risk to the base layer; at the same time, through the connection between the control unit, the spray unit and the road base layer, the control unit can automatically adjust the spray intensity and frequency according to the moisture content in the road base layer, ensuring that the road base layer can be properly maintained under different environmental conditions, thereby effectively improving maintenance efficiency, reducing manual operations, reducing labor intensity, and helping to save water resources, reduce energy consumption, and avoid softening or damage of the base layer due to excessive watering, and drying and insufficient strength of the base layer due to insufficient watering.

[0038] 2. The maintenance device of the present invention, by arranging the water supply pipe along the axis of the road and matching it with the rotating nozzle, ensures that the maintenance water can evenly cover the entire road base, thereby improving the maintenance efficiency and uniformity; secondly, by adopting the modular design of the three-way joint that detachably connects multiple water supply pipes and multiple support pipes, the entire spray unit is easy to install and disassemble, convenient for maintenance and adjustment, which helps to reduce the cost of overall replacement due to damage to a certain component, and allows the length and coverage of the spray unit to be flexibly adjusted according to actual needs, thereby adapting to road maintenance work of different scales; in addition, through the design of the telescopic rod and the rotating nozzle, the adaptability of the spray unit to irregular road bases is further improved, ensuring that the maintenance water is evenly distributed on the entire road base, effectively improving the maintenance effect.

[0039] 3. The maintenance device of the present invention, by installing the support tube on the road base through a triangular support, the outer side of the lower end of the telescopic rod is closedly connected to the support tube, and the lower end of the telescopic rod is arranged inside the support tube and detachably connected to the side end joint of the three-way joint through a hose, thereby reducing the difficulty of adjusting the support tube to the vertical direction and effectively improving the construction efficiency.

[0040] 4. The maintenance device of the present invention monitors the humidity changes inside the road base in real time through the humidity sensor, and transmits the data to the controller, so that the controller automatically determines whether it is necessary to open the solenoid valve to perform spray maintenance operations based on these data, thereby not only dynamically adjusting the water spraying amount according to the actual humidity conditions to avoid excessive or insufficient spraying, but also ensuring that water resources are effectively utilized during the maintenance process, reducing unnecessary waste; secondly, since the probe of the humidity sensor is directly buried in the road base, it can more accurately reflect the actual humidity state of the road base, which helps to prevent improper maintenance problems caused by human misjudgment; in addition, the controller can accurately control the spraying operation of a single rotating nozzle according to the humidity conditions of the road base, which can further improve the utilization rate of water resources and reduce waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of a maintenance device according to an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of the structure of a maintenance device according to an embodiment of the present invention connected to a three-way joint through a hose;

[0043] Figure 3 Schematic diagram of the distribution of humidity sensors according to an embodiment of the present invention;

[0044] Figure 4 The present invention is a schematic diagram of the steps of the road base maintenance method according to an embodiment of the present invention.

[0045] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0046] 1- water supply main, 11- three-way joint, 2- support pipe, 21- triangular support frame, 3- telescopic rod, 31- hose, 4- rotating nozzle, 5- solenoid valve, 6- humidity sensor, 7- controller. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] Example 1

[0049] like Figures 1 to 3As shown, Embodiment 1 of the present invention provides a road base maintenance device, including: a spray unit and a control unit; the spray unit is arranged on the surface of the road base and arranged along the road axis; the control unit is connected to the spray unit and the road base respectively. In actual use, the base is directly watered by arranging the spray unit along the road axis and arranged on the surface of the road base, so that the water can penetrate into the base more directly and evenly, and no additional mechanical intervention is required, thereby reducing the physical interference and damage risk to the base; at the same time, through the connection between the control unit, the spray unit and the road base, the control unit can automatically adjust the spray intensity and frequency according to the moisture content in the road base, ensuring that the road base can be properly maintained under different environmental conditions, thereby effectively improving the maintenance efficiency, reducing manual operations, reducing labor intensity, and also helping to save water resources, reduce energy consumption, and avoid softening or damage to the base caused by excessive watering, and drying and insufficient strength of the base caused by insufficient watering.

[0050] Specifically, Figure 1 to Figure 2 As shown, the spray unit is arranged on the surface of the road base and along the road axis, and is used to provide a stable water source and evenly spray clean water on the surrounding road base. The spray unit includes: a water supply pipe 1, a support pipe 2, a telescopic rod 3 and a rotating nozzle 4; the water supply pipe 1 is arranged on the surface of the road base and along the road axis, and several water supply pipes 1 are detachably connected through a three-way joint 11; the support pipe 2 is detachably connected to the side end joint of the three-way joint 11; the telescopic rod 3 is arranged at the upper end of the support pipe 2, and it is a hollow telescopic rod; the rotating nozzle 4 is arranged at the upper end of the telescopic rod 3. In actual use, by arranging the water supply pipe along the axis of the road and matching it with the rotating nozzle 4, it is ensured that the maintenance water can evenly cover the entire road base, thereby improving the maintenance efficiency and uniformity; secondly, by adopting the modular design of the three-way joint 11 detachably connecting multiple water supply pipes 1 and multiple support pipes 2, the entire spray unit is easy to install and disassemble, convenient for maintenance and adjustment, which helps to reduce the cost of overall replacement due to damage to a certain component, and allows the length and coverage of the spray unit to be flexibly adjusted according to actual needs, thereby adapting to road maintenance work of different scales; in addition, through the design of the telescopic rod 3 and the rotating nozzle, the adaptability of the spray unit to irregular road bases is further improved, ensuring that the maintenance water is evenly distributed on the entire road base, effectively improving the maintenance effect.

[0051] Preferably, one end of the water supply pipe 1 is connected to a water supply source with a water pump, and the other end is sealed to ensure stable water supply and avoid waste of water resources.

[0052] Preferably, the water supply main pipe 1 has a diameter of 100-120 mm and a length of 2.8-3.2 m, so as to ensure sufficient water supply and improve adaptability to roads of different lengths, thereby improving material turnover capacity and avoiding material waste.

[0053] Preferably, the three-way connector 11 is a PVC (polyvinyl chloride) connector, which is used to reduce the cost of consumables while meeting the use conditions.

[0054] Preferably, the support tube 2 is a PVC tube with a diameter of 20 to 30 mm, which is used to reduce the cost of consumables and the overall weight while meeting the use conditions.

[0055] Preferably, the telescopic rod 3 is a stainless steel telescopic rod, and the total height of the telescopic rod and the support tube 2 after extension is 2 to 2.3 m, which is used to improve the stability of the telescopic rod and its adaptability to road bases of different specifications.

[0056] In an optional embodiment, due to the road length factor, the task of adjusting the three-way joint 11 to keep the support tube 2 vertical is too much, the difficulty increases, and the construction efficiency is reduced; therefore, the support tube 2 is arranged on the road base through the triangular support frame 21, and the outer side of the lower end of the telescopic rod 3 is closedly connected to the support tube 2, and its lower end is arranged inside the support tube 2 and is detachably connected to the side end joint of the three-way joint 11 through a hose 31, which is used to reduce the difficulty of adjusting the support tube 2 to the vertical direction, effectively improve the construction efficiency, and prevent debris from entering the support tube 2.

[0057] Specifically, Figures 1 to 3As shown, the control unit is connected to the spray unit and the road base, respectively, and is used to intelligently control the spray unit to perform spraying operations. The control unit includes: a solenoid valve 5, a humidity sensor 6 and a controller 7; the solenoid valve 5 is connected to the support tube 2; a plurality of humidity sensors 6 are evenly distributed on the surface of the road base around the adjacent support tube 2, and their probes are buried in the road base; the controller 7 is arranged outside the support tube 2, and it maintains communication and / or electrical connection with the solenoid valve 5 and the humidity sensor 6, respectively. During actual use, the humidity sensor 6 monitors the humidity changes inside the road base in real time, and transmits the data to the controller 7, so that the controller 7 automatically determines whether it is necessary to open the solenoid valve 5 for spraying maintenance operations based on these data, thereby not only dynamically adjusting the water spraying amount according to the actual humidity conditions to avoid excessive or insufficient spraying, but also ensuring that the water resources in the maintenance process are effectively utilized, reducing unnecessary waste; secondly, since the probe of the humidity sensor 6 is directly buried in the road base, it can more accurately reflect the actual humidity state of the road base, which helps to prevent improper maintenance problems caused by human misjudgment; in addition, the controller 7 can accurately control the spraying operation of a single rotating nozzle 4 according to the humidity conditions of the road base, which can further improve the utilization rate of water resources and reduce waste.

[0058] Preferably, the solenoid valve 5 comprises an automatic solenoid valve or a pilot solenoid valve, so as to improve the adaptability to different road bases and different environments.

[0059] In an optional embodiment, there are two hoses 31, one end of the two hoses 31 is respectively connected to the telescopic rod 3 and the side end joint of the three-way joint 11, and the other end is respectively connected to the two ends of the solenoid valve 5, so as to control the flow of water in the hose 31 through the solenoid valve 5, thereby reducing the difficulty of installation and maintenance.

[0060] Preferably, there are at least four humidity sensors 6 , and the horizontal distance between the humidity sensors 6 and the support tube 2 is 1.5-2.5 m, so as to improve the accuracy of measuring the humidity of the road base.

[0061] Preferably, the controller 7 is provided with a power supply inside and a digital display screen outside, which can display the moisture content data of several humidity sensors 6 connected to the controller 7, so as to reduce the difficulty of installing the control unit and enable the staff to check the humidity data of the humidity sensor 6 during maintenance, thereby reducing the risk of maintenance failure or excessive spraying due to power failure of the controller 7 and damage of the humidity sensor 6.

[0062] Preferably, the controller 7 is provided with a manual switch for controlling the opening and closing of the solenoid valve 5 without being affected by the data of the humidity sensor 6, so that the water spraying time and the amount of water for maintenance can be controlled according to special needs, thereby improving the flexibility of the maintenance device.

[0063] In an optional embodiment, the controller 7 maintains a communication connection with the control terminal, and the control terminal can remotely control each controller 7 to open and close the solenoid valve 5, so as to avoid the problem of maintenance water being sprayed onto the staff due to manual control.

[0064] Preferably, different upper and lower limits of moisture content are set according to different road base structures. The upper limit moisture content of the cement-stabilized gravel base is set to 8%, and the lower limit moisture content is set to 4%; the upper limit moisture content of the cement-lime-stabilized soil base is set to 23%, and the lower limit moisture content is set to 16%; the upper limit moisture content of the cement-stabilized soil base is set to 23%, and the lower limit moisture content is set to 16%.

[0065] Example 2

[0066] like Figure 4 As shown, based on Example 1, Example 2 of the present invention provides a road base maintenance method, comprising the following steps:

[0067] S1: stock the maintenance device according to the road base size and check whether the maintenance device is damaged;

[0068] S2: Connect the solenoid valve 5, the humidity sensor 6 and the controller 7, and pre-assemble the solenoid valve 5 and the controller 7 onto the support tube 2 respectively;

[0069] S3: After the road base is paved, a layer of geotextile is covered on the surface of the base, and the water supply main 1 is assembled through the tee joint 11 on the road axis;

[0070] S4: by placing the preassembled support pipe 2 on the upper end of the three-way joint 11, and connecting the preassembled support pipe 2 to the water supply main pipe 1 through the three-way joint 11;

[0071] S5: Connect the water supply main 1 to the water supply source, conduct a trial run, and after confirming that the water spraying is normal, officially activate the maintenance device;

[0072] S6: When the moisture content of the road base reaches the set upper limit, the controller 7 controls the solenoid valve 5 to cut off the water supply and stop spraying; when the moisture content of the road base reaches the set lower limit, the controller 7 controls the solenoid valve 5 to supply water and start spraying;

[0073] S7: During the maintenance period, the moisture content of the road base is manually checked regularly, and damaged parts are repaired and replaced. When the maintenance period is over, the water supply is turned off and the maintenance device is removed for reuse.

[0074] Example 3

[0075] like Figure 4 As shown, based on Example 2, Example 3 of the present invention provides a control method for a road base maintenance device, which is used to further accurately control the spraying intensity of the maintenance device to reduce the waste of water resources while meeting the maintenance requirements of the road base.

[0076] Specifically, according to the upper and lower limits of the corresponding moisture content of the road base material and the moisture content data of the plurality of humidity sensors 6, the spray intensity controlled by the solenoid valve 5 is calculated and confirmed:

[0077]

[0078] Where I(t) is the spray intensity at the current moment; I(t-1) is the spray intensity at the previous moment; k p is the proportional constant; k i is the integration constant; T is the sampling period; e(t) is the error at the current moment, and e(t) = W set -W(t);W set is the set moisture content, W 上 To set the upper limit, W 下 is the lower limit value; W(t) is the moisture content at the current moment.

[0079] Since it is necessary to consider the influence of the measurement range and position of each humidity sensor 6 on the overall moisture content. Assume that there are n humidity sensors 6, each humidity sensor 6i has a measurement value W i (t) and a weight w i , so the weighted average moisture content is:

[0080]

[0081] Where W(t) is the moisture content at the current moment; W i (t) is the moisture content measurement value of the i-th humidity sensor 6 at the current moment; w i is the weight of the i-th humidity sensor 6 .

[0082] Preferably, the proportionality constant k p and the integration constant k i Determined through experiments or simulations to ensure the accuracy and stability of system response.

[0083] Preferably, the weight w i The weight is determined according to the distance between the humidity sensor 6 and the support tube 2 . The smaller the distance, the smaller the weight, which is used to further adapt to irregular road bases.

[0084] For example, when the road base is cement stabilized soil; I(0) = 0, that is, the solenoid valve 5 is closed; the controller 7 uses the current moisture content data W of all the humidity sensors 6 in a cycle of 10 minutes. i (t) Calculate the spray intensity, the control method is:

[0085]

[0086] The specific implementation steps are:

[0087] S601: Initialize the spray intensity to I(0)=0;

[0088] S602: The controller 7 collects the current moisture content data W of all the humidity sensors 6 in a cycle of 10 minutes. i (t);

[0089] S603: Calculate the weighted average of the moisture contents of all the humidity sensors 6 as the current moisture content W(t);

[0090] S604: adjusting the spray intensity I(t) according to the optimized control formula;

[0091] S605: applying the adjusted spray intensity I(t) to the maintenance device;

[0092] S606: Repeat steps 2-5 regularly to maintain the moisture content within a set range.

[0093] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0094] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0095] In this patent, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Those skilled in the art will readily understand that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A road base maintenance device, characterized in that: include: Spray unit and control unit, wherein: The spray unit is arranged on the surface of the road base and along the road axis, and is used to provide a stable water source and evenly spray clean water on the surrounding road bases; The control unit is connected to the spray unit and the road base respectively, and comprises: a solenoid valve (5), a humidity sensor (6) and a controller (7); the solenoid valve (5) is connected to the support tube 2; a plurality of humidity sensors (6) are evenly distributed on the surface of the road base around the adjacent support tube (2), and their probes are buried in the road base; the controller (7) is arranged on the outside of the support tube (2), and is in communication and / or electrical connection with the solenoid valve (5) and the humidity sensor (6) respectively; The humidity sensor (6) monitors the humidity changes inside the road base in real time, and transmits the moisture content data to the controller (7), so that the controller (7) automatically determines whether to open or close the solenoid valve 5 based on the data, thereby adjusting the spray unit to perform spray maintenance operations.

2. The maintenance device according to claim 1, characterized in that: The spray unit comprises: a water supply pipe (1), the support pipe (2), a telescopic rod (3) and a rotating nozzle (4); the water supply pipe (1) is arranged on the surface of the road base and arranged along the road axis, and a plurality of the water supply pipes (1) are detachably connected via a three-way joint (11); the support pipe (2) is detachably connected to the side end joint of the three-way joint (11); the telescopic rod (3) is arranged at the upper end of the support pipe (2) and is a hollow telescopic rod; the rotating nozzle (4) is arranged at the upper end of the telescopic rod (3).

3. The maintenance device according to claim 2, characterized in that: The support tube (2) is arranged on the road base through a triangular support frame (21); the outer side of the lower end of the telescopic rod (3) is closed-type connected to the support tube (2); the lower end of the telescopic rod (3) is arranged inside the support tube (2) and is detachably connected to the side end joint of the three-way joint (11) through a hose (31).

4. The maintenance device according to claim 2, characterized in that: The water supply main pipe (1) has a diameter of 100 to 120 mm and a length of 2.8 to 3.2 m; The three-way joint (11) is a PVC joint; The support tube (2) is a PVC tube with a diameter of 20 to 30 mm; The telescopic rod (3) is a stainless steel telescopic rod, and the total height of the telescopic rod and the support tube (2) after extension is 2 to 2.3 m.

5. The maintenance device according to any one of claims 1 to 4, characterized in that: The upper limit moisture content of the cement-stabilized gravel base is set to 8%, and the lower limit moisture content is set to 4%; the upper limit moisture content of the cement-lime-stabilized soil base is set to 23%, and the lower limit moisture content is set to 16%; the upper limit moisture content of the cement-stabilized soil base is set to 23%, and the lower limit moisture content is set to 16%.

6. The maintenance device according to any one of claims 1 to 4, characterized in that: The humidity sensors (6) are spaced at least four apart, and the horizontal distance of the support tubes (2) is 1.5 to 2.5 m.

7. The maintenance device according to any one of claims 1 to 4, characterized in that: The controller (7) is provided with a power supply inside and a digital display screen outside, and the digital display screen can display the moisture content data of a plurality of humidity sensors (6) connected to the controller (7); The controller (7) is provided with a manual switch.

8. The maintenance device according to claim 7, characterized in that: The controller (7) maintains a communication connection with the control terminal, and the control terminal can remotely control each controller (7) to open and close the solenoid valve (5); The solenoid valve (5) comprises an automatic solenoid valve or a pilot solenoid valve.

9. A road base maintenance method, implemented by using the maintenance device according to any one of claims 1 to 8, characterized in that: The steps include: S1: stock the maintenance device according to the road base size and check whether the maintenance device is damaged; S2: connecting the solenoid valve (5), the humidity sensor (6) and the controller (7), and pre-assembling the solenoid valve (5) and the controller (7) onto the support tube (2); S3: After the road base is paved, a layer of geotextile is covered on the surface of the base, and a water supply main (1) is assembled on the road axis through a three-way joint (11); S4: placing the preassembled support pipe (2) on the upper end of the three-way joint (11), and connecting the preassembled support pipe (2) to the water supply main pipe (1) through the three-way joint (11); S5: Connect the water supply main (1) to the water supply source, conduct a trial run, and after confirming that the water spraying is normal, officially activate the maintenance device; S6: When the moisture content of the road base reaches a set upper limit, the controller (7) controls the solenoid valve (5) to cut off water supply and stop spraying; when the moisture content of the road base reaches a set lower limit, the controller (7) controls the solenoid valve (5) to supply water and start spraying; S7: During the maintenance period, the moisture content of the road base is manually checked regularly, and damaged parts are repaired and replaced. When the maintenance period is over, the water supply is turned off and the maintenance device is removed for reuse.

10. The curing method according to claim 9, characterized in that: According to the corresponding upper and lower limits of the moisture content of the road base material and the moisture content data of the plurality of humidity sensors (6), the spray intensity controlled by the electromagnetic valve (5) is calculated and confirmed: Where I(t) is the spray intensity at the current moment; I(t-1) is the spray intensity at the previous moment; k p is the proportional constant; k i is the integration constant; T is the sampling period; e(t) is the error at the current moment, and e(t) = W set -W(t);W set is the set moisture content, W 上 To set the upper limit, W 下 is the lower limit value; W(t) is the moisture content at the current moment; W(t) is obtained as follows: Where W(t) is the moisture content at the current moment; W i (t) is the moisture content measurement value of the i-th humidity sensor (6) at the current moment; w i is the weight of the i-th humidity sensor (6).

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