Moisturizing and maintaining equipment for secondary lining of tunnel

Abstract

The invention provides tunnel secondary lining moisturizing and maintaining equipment, and relates to the technical field of tunnel construction equipment, the tunnel secondary lining moisturizing and maintaining equipment comprises a moving structure, a water supply structure, a spraying structure and a detection structure, the moving structure is used for moving in the extending direction of a tunnel, and the moving structure is connected with the water supply structure; the water supply structure comprises a main water pipe, the main water pipe is of a semi-annular structure, and a plurality of communicating pipes are arranged on the main water pipe at intervals; the number of the spraying structures is multiple, and each spraying structure is connected with the corresponding communicating pipe. The multiple detection structures are distributed in the extending direction of the semi-annular main water pipe at intervals, and the detection structures are used for detecting the humidity of the tunnel secondary lining concrete. The technical problem that in the prior art, humidity detection and moisturizing are not convenient to conduct on the inner wall of the tunnel is solved.

Description

Technical Field

[0001] This invention relates to the technical field of equipment for tunnel construction, and in particular to a device for moisturizing and curing secondary lining of tunnels. Background Technology

[0002] After the secondary lining of a tunnel is poured, a period of moisturizing is usually required. The role of moisturizing the secondary lining concrete is mainly reflected in the following aspects: First, it prevents cracking of the secondary lining concrete. Compared with natural curing, moisturizing ensures the strength and durability of the secondary lining concrete during tunnel construction. Second, it reduces water leakage. Moisturizing can effectively reduce the infiltration of groundwater, reduce the impact of water on the internal facilities of the tunnel, and thus extend the service life of the tunnel. Third, it enhances the humidity conditions during the hardening process of the secondary lining concrete. Moisturizing ensures that the secondary lining concrete maintains suitable humidity conditions during the hardening process, thereby effectively improving the strength and durability of the secondary lining concrete. Finally, it improves structural stability. Moisturizing treatment can mitigate the impact of environmental changes on the tunnel's secondary lining structure, reduce structural damage caused by temperature and humidity fluctuations, and thus improve the overall stability of the tunnel.

[0003] However, in existing technologies, the surface moisture retention of the secondary tunnel lining after construction is generally assessed visually by relevant personnel. When the humidity in a given area is insufficient, workers operate water spraying equipment to apply water mist to the relevant areas of the tunnel. This approach often requires manual inspection, and when humidity is insufficient, workers also need to manually operate the equipment to spray water mist onto the concrete surface of the secondary tunnel lining, which is inconvenient for workers and increases production costs. Summary of the Invention

[0004] The purpose of this invention is to provide a moisture-retaining and curing device for secondary tunnel lining, so as to alleviate the technical problem in the prior art that it is inconvenient to detect and replenish the humidity of the tunnel inner wall.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This invention provides a tunnel secondary lining moisture retention and maintenance device, including a moving structure, a water supply structure, a spraying structure and a detection structure. The moving structure is used to move along the extension direction of the tunnel, and the moving structure is connected to the water supply structure. The water supply structure includes a main water pipe, which has a semi-circular structure and is provided with multiple connecting pipes at intervals. The spray structure is provided in multiple parts, and each spray structure is connected to a corresponding connecting pipe; The detection structure is provided in multiple parts, and the multiple detection structures are distributed at intervals along the extension direction of the semi-circular main water pipe. The detection structure is used to detect the humidity of the secondary lining concrete of the tunnel.

[0006] Furthermore, the mobile structure includes a vehicle body and wheel mechanisms. The vehicle body is connected to the water supply structure and is also connected to multiple wheel mechanisms, which are used to drive the vehicle body to move along the extension direction of the tunnel.

[0007] Furthermore, the water supply structure also includes a water pump, an inlet pipe, an outlet pipe, and a water tank. The water pump and the water tank are both connected to the vehicle body, and the water tank is connected to the water pump through the outlet pipe. The water pump is connected to the main water pipe through the inlet pipe.

[0008] Furthermore, the spray structure includes a spray pipe, a spray head, and a solenoid valve. One end of the spray pipe is provided with the spray head, and the other end of the spray pipe is connected to the spray pipe through the solenoid valve.

[0009] Furthermore, the detection structure includes an elastic element, a sleeve, a guide rod, an electric push rod, a conductive component, a first power switch, and a micro switch. One end of the electric push rod is connected to the main water pipe, and the other end of the electric push rod is connected to the sleeve. The end of the sleeve away from the electric push rod is provided with an elastic element, and the guide rod is slidably connected to the sleeve, and the guide rod abuts against the elastic element; The end of the guide rod away from the sleeve is connected to the conductive component, which is used to abut against the inner wall of the tunnel. The first power switch is electrically connected to the electric push rod, and the first power switch is electrically connected to one end of the micro switch; The other end of the micro switch is electrically connected to the electric push rod.

[0010] Furthermore, the conductive component includes a support frame, an insulating support tube, and two conductive bearings. One end of the support frame is connected to the guide rod, and the support frame is connected to the two sets of conductive bearings through the insulating support tube. The two conductive bearings are spaced apart along the extension direction of the insulating support tube.

[0011] Furthermore, the wheel mechanism includes a drive member and a wheel, the drive member is connected to the vehicle body, and the output end of the drive member is connected to the wheel.

[0012] Furthermore, the tunnel secondary lining moisture retention and maintenance equipment also includes a control structure, a battery, and multiple sets of detection structures. The control structure, the detection structures, and the battery are all connected to the vehicle body, and the battery is electrically connected to the control structure and the multiple sets of detection structures respectively. All of the aforementioned detection structures are electrically connected to the control structure.

[0013] Furthermore, the detection structure includes a first relay, a resistor, a diode, and a transistor, wherein the positive power input terminal of the first relay is electrically connected to one of the conductive bearings; Another conductive bearing is electrically connected to one end of the resistor, and the other end of the resistor is electrically connected to the base of the transistor; The collector of the transistor is electrically connected to the negative power input terminal of the first relay. The normally closed contact of the first relay is connected to the positive terminal of the diode.

[0014] Furthermore, the control structure includes a second power switch, a second relay, a time control switch, and a third relay, wherein the power output terminal of the time control switch is electrically connected to the power input terminal of the second relay; The negative power input terminal of the third relay is electrically connected to the negative power input terminal of the time control switch and the negative power input terminal of the second power switch, respectively. The power output terminal of the second power switch is electrically connected to the positive power input terminal of the third relay.

[0015] The present invention can achieve the following beneficial effects: This invention provides a moisture-retaining curing device for secondary tunnel lining, comprising a movable structure, a water supply structure, a spraying structure, and a detection structure. The movable structure is used to move along the extension direction of the tunnel and is connected to the water supply structure. The water supply structure includes a main water pipe, which has a semi-circular structure and multiple connecting pipes spaced apart on the main water pipe. Multiple spraying structures are provided, and each spraying structure is connected to a corresponding connecting pipe. Multiple detection structures are provided and are spaced apart along the extension direction of the semi-circular main water pipe. The detection structures are used to detect the humidity of the secondary tunnel lining concrete.

[0016] In this invention, the moving structure is connected to the water supply structure and is used to travel along the tunnel. The water supply structure is provided with a main water pipe with a semi-circular structure that matches the arched top of the tunnel, and multiple connecting pipes are provided along the top of its semi-circular structure. Each connecting pipe is connected to a corresponding spray structure. The multiple spray structures are distributed at intervals, and a detection structure is provided between any two adjacent spray structures. The detection structure is used to detect the humidity of the secondary lining concrete of the tunnel and transmit the detection results to the corresponding processing device.

[0017] Compared with the prior art, the tunnel secondary lining moisture retention and maintenance equipment provided by the present invention installs the detection structure and the spray structure on the semi-circular main water pipe so that the two fit more closely to the inner wall of the tunnel. During the movement of the moving structure along the tunnel, multiple detection structures can detect the humidity of the tunnel section it passes through in real time. After detecting that the tunnel humidity is low, the corresponding spray structure sprays and humidifies the relevant section and the relevant location of the tunnel.

[0018] In summary, the present invention at least alleviates the technical problem of the inconvenience of humidity detection and humidification of the tunnel interior wall in the prior art. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the tunnel secondary lining moisture retention and curing equipment provided in an embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of the tunnel secondary lining moisture retention and curing equipment provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the electrical connections of the tunnel secondary lining moisture retention and curing equipment provided in an embodiment of the present invention; Figure 4 A schematic diagram of the first power switch of the tunnel secondary lining moisture retention and curing equipment provided in an embodiment of the present invention; Figure 5 A schematic diagram of the second power switch for the tunnel secondary lining moisture retention and curing equipment provided in an embodiment of the present invention; Figure 6 A schematic diagram of the time control switch for the tunnel secondary lining moisture retention and curing equipment provided in an embodiment of the present invention.

[0021] Icons: 1-Moving structure; 11-Vehicle body; 12-Wheel mechanism; 121-Drive component; 122-Wheel; 2-Water supply structure; 21-Water pump; 22-Inlet pipe; 23-Outlet pipe; 24-Main water pipe; 241-Connecting pipe; 3-Spray structure; 31-Spray pipe; 32-Spray head; 33-Solenoid valve; 4-Detection structure; 41-Elastic component; 42-Support frame; 43-Insulating support pipe; 44-Sleeve; 45-Guide rod; 46-Conductive bearing; 47-Electric push rod; 5-Control structure; 6-Detection structure; 7-Battery; 71-Charging socket; 101-First power switch; 102-Second power switch; 103-First relay; 104-Micro switch; 105-Resistor; 106-Diode; 107-Second relay; 108-Time control switch; 109-Third relay; 110-Transistor. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the 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 invention without inventive effort are within the scope of protection of the invention.

[0024] 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.

[0025] In the description of this invention, it should be noted that the terms "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical 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 invention based on the specific circumstances.

[0028] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0029] Example 1 This embodiment provides a tunnel secondary lining moisture retention and curing device, referring to... Figure 1 The tunnel secondary lining moisture retention and curing equipment includes a movable structure 1, a water supply structure 2, a spray structure 3, and a detection structure 4. The movable structure 1 is used to move along the extension direction of the tunnel and is connected to the water supply structure 2. The water supply structure 2 includes a main water pipe 24, which is a semi-circular structure, and multiple connecting pipes 241 are spaced apart on the main water pipe 24. Multiple spray structures 3 are provided, and each spray structure 3 is connected to a corresponding connecting pipe 241. Multiple detection structures 4 are provided, and the multiple detection structures 4 are spaced apart along the extension direction of the semi-circular main water pipe 24. The detection structures 4 are used to detect the humidity of the tunnel secondary lining concrete.

[0030] The embodiments of the present invention at least alleviate the technical problems existing in the prior art that make it inconvenient to detect and replenish humidity on the inner wall of tunnels.

[0031] In this embodiment of the invention, the moving structure 1 is connected to the water supply structure 2, and the moving structure 1 is used to travel along the tunnel. The water supply structure 2 is provided with a main water pipe 24 with a semi-circular structure that matches the arched top of the tunnel, and multiple connecting pipes 241 are provided along the top of its semi-circular structure. Each connecting pipe 241 is connected to a corresponding spray structure 3. The multiple spray structures 3 are distributed at intervals, and a detection structure 4 is provided between any two adjacent spray structures 3. The detection structure 4 is used to detect the humidity of the secondary lining concrete of the tunnel and transmit the detection results to the corresponding processing device.

[0032] Compared with the prior art, the tunnel secondary lining moisture retention and maintenance equipment provided in this embodiment of the invention installs the detection structure 4 and the spray structure 3 on the semi-circular main water pipe 24 so that the two fit more closely to the inner wall of the tunnel. During the movement of the moving structure 1 along the tunnel, multiple detection structures 4 can detect the humidity of the tunnel section it passes through in real time. After detecting that the tunnel humidity is low, the corresponding spray structure 3 sprays and humidifies the relevant section and the relevant location of the tunnel.

[0033] In an optional implementation of this embodiment, refer to Figure 1 The mobile structure 1 includes a vehicle body 11 and wheel mechanisms 12. The vehicle body 11 is connected to the water supply structure 2 and is also connected to multiple wheel mechanisms 12. The multiple wheel mechanisms 12 are used to drive the vehicle body 11 to move along the extension direction of the tunnel.

[0034] Specifically: multiple wheel mechanisms 12 are symmetrically arranged on both sides of the bottom of the vehicle body 11, and the vehicle body 11 is connected to the water supply structure 2. Specifically, the vehicle body 11 is equipped with a water tank of the water supply structure 2, and multiple sets of semi-circular main water pipes 24 are provided on the top of the vehicle body 11, and the multiple main water pipes are distributed at intervals along the extension direction of the vehicle body 11; and the vehicle body 11 is also equipped with an electrical control box, which contains multiple power supply devices.

[0035] Furthermore, referring to Figure 1 The water supply structure 2 also includes a water pump 21, an inlet pipe 22, an outlet pipe 23, and a water tank. The water pump 21 and the water tank are both connected to the vehicle body 11. The water tank is connected to the water pump 21 through the outlet pipe 23. The water pump 21 is connected to the main water pipe 24 through the inlet pipe 22.

[0036] Specifically: The water tank has a recessed mounting groove at the lower front center. A water outlet pipe 23, communicating with the interior, is welded to the middle of the front side of the rear end of the mounting groove. A water pump 21 is fixedly installed at the front end of the mounting groove. The inlet end of the water pump 21 is connected to the front side of the outlet pipe 23 via a pipe joint. The lower end of the main water pipe 24 is horizontally welded to the upper outside of the water tank. A water inlet pipe 22, communicating with the interior, is welded to the lower front end of the main water pipe 24. The outer front end of the water inlet pipe 22 is fixedly connected to the outlet end of the water pump 21 via a pipe. The water tank is used to fill it with water through the water inlet pipe.

[0037] Furthermore, referring to Figure 1 The spray structure 3 includes a spray pipe 31, a spray head 32 and a solenoid valve 33. One end of the spray pipe 31 is provided with a spray head 32, and the other end of the spray pipe 31 is connected to the spray pipe 31 through the solenoid valve 33.

[0038] Specifically: the outer end of the solenoid valve 33 is connected to the liquid inlet end of the spray pipe 31 by a thread, while the other end of the spray pipe 31 is provided with a spray head 32, and the inner end of the solenoid valve 33 is connected to the corresponding connecting pipe 241 by a thread, so that the nozzle of the spray head 32 is located on the outside.

[0039] Furthermore, referring to Figure 1 and Figure 2 The detection structure 4 includes an elastic element 41, a sleeve 44, a guide rod 45, an electric push rod 47, a conductive component, a first power switch 101, and a micro switch 104. One end of the electric push rod 47 is connected to the main water pipe 24, and the other end of the electric push rod 47 is connected to the sleeve 44. The end of the sleeve 44 facing away from the electric push rod 47 is provided with an elastic element 41, and the guide rod 45 is slidably connected to the sleeve 44 and abuts against the elastic element 41. The end of the guide rod 45 facing away from the sleeve 44 is connected to the conductive component, which is used to abut against the inner wall of the tunnel. The first power switch 101 is electrically connected to the electric push rod 47, and the first power switch 101 is electrically connected to one end of the micro switch 104. The other end of the micro switch 104 is electrically connected to the electric push rod 47.

[0040] Specifically: the guide rod 45 is welded to the outer middle of the rear end of the conductive component, and a snap-fit ​​part is provided at the end of the guide rod 45 away from the conductive component. An opening is provided at the front end of the sleeve 44, within which an elastic element 41 and the snap-fit ​​part of the guide rod 45 are located. The opening is recessed to limit and snap-fit ​​the snap-fit ​​part. A hole is provided in the middle of the front left side of the sleeve 44, which is used to fix and install the micro switch 104. The button of the micro switch 104 is located at the front inner left end of the sleeve 44. The rear outer end of the sleeve 44 is fixedly connected to the movable main front section of the electric push rod 47, and the electric push rod 47 is located outside the main water pipe 24. The elastic element 41 can be a spring. When the guide rod 45 is at its front stop point, the front part of the rear end of the guide rod 45 contacts the button of the micro switch 104, causing the internal contacts of the micro switch 104 to close.

[0041] It should be noted that the first power switch 101 may have six connection terminals, and the E and F pins of one of its power output terminals are connected to the positive and negative power input terminals of the electric push rod 47 via wires. The C pin of another power output terminal of the first power switch 101 is connected to one end of the micro switch 104 via wires. The other end of the micro switch 104 and the D pin of the second power output terminal of the other power switch 101 are connected to the positive and negative power input terminals of the electric push rod 47 via wires.

[0042] Furthermore, referring to Figure 2The conductive component includes a support frame 42, an insulating support tube 43, and two conductive bearings 46. One end of the support frame 42 is connected to the guide rod 45, and the support frame 42 is connected to the two sets of conductive bearings 46 through the insulating support tube 43. The two conductive bearings 46 are distributed at intervals along the extension direction of the insulating support tube 43.

[0043] Specifically: There are two conductive bearings 46, and the inner rings of the two conductive bearings 46 are tightly fitted on the outer side of the middle part of the insulating support tube 43 with a gap between them. A wire is welded to the inner side of the inner ring of each of the two conductive bearings 46. The two sides of the insulating support tube 43 are fixedly installed on the front end of the support frame 42. There is a gap between the outer side of the outer ring of the two conductive bearings 46 and the inner side of the rear end of the support frame 42. The support frame 42 is connected to the guide rod 45.

[0044] Furthermore, referring to Figure 1 The wheel mechanism 12 includes a drive member 121 and a wheel 122. The drive member 121 is connected to the vehicle body 11, and the output end of the drive member 121 is connected to the wheel 122.

[0045] Specifically: the drive component 121 can be a motor reduction device, and the wheel 122 is fixedly installed together with the power output shaft of the drive component 121 so as to drive the wheel 122 to rotate through the drive component 121, and multiple drive components 121 can be synchronously controlled by a control device through electrical signals.

[0046] Furthermore, referring to Figure 1 and Figure 3 The tunnel secondary lining moisture retention and maintenance equipment also includes a control structure 5, a battery 7, and multiple detection structures 6. The control structure 5, detection structures 6, and battery 7 are all connected to the vehicle body 11, and the battery 7 is electrically connected to the control structure 5 and the multiple detection structures 6 respectively; the multiple detection structures 6 are all electrically connected to the control structure 5.

[0047] Specifically: the control structure 5, the battery 7, and multiple detection structures 6 are all located inside the electrical control box. The battery 7 supplies power to the control structure 5 and the multiple detection structures 6, and the battery 7 is equipped with a charging socket 71 for charging. When the battery 7 is depleted, an external 24V charging plug can be inserted into the charging socket 71 to charge it.

[0048] Furthermore, referring to Figure 3The detection structure 6 includes a first relay 103, a resistor 105, a diode 106, and a transistor 110. The positive power input terminal of the first relay 103 is electrically connected to a conductive bearing 46; another conductive bearing 46 is electrically connected to one end of the resistor 105, and the other end of the resistor 105 is electrically connected to the base of the transistor 110; the collector of the transistor 110 is electrically connected to the negative power input terminal of the first relay 103; and the normally closed contact of the first relay 103 is connected to the positive terminal of the diode 106.

[0049] Specifically: each detection structure 6 can be a detection circuit, and each detection structure 6 includes a first relay 103, a resistor 105, a diode 106, and a transistor 110 connected via circuit board wiring. The two conductive bearings 46 of each detection structure 4 are electrically connected to the detection structure 6 via wires. The positive power input terminal and the control power input terminal of the first relay 103 are connected to the first conductive bearing 46. The second conductive bearing 46 is connected to one end of the resistor 105. The other end of the resistor 105 is connected to the base of the transistor 110. The collector of the transistor 110 is connected to the negative power input terminal of the first relay 103. The normally closed contact of the first relay 103 is connected to the positive terminal of the diode 106.

[0050] In an optional implementation of this embodiment, refer to Figure 3 The control structure 5 includes a second power switch 102, a second relay 107, a timer switch 108, and a third relay 109. The power output terminal of the timer switch 108 is electrically connected to the power input terminal of the second relay 107. The negative power input terminal of the third relay 109 is electrically connected to both the negative power input terminal of the timer switch 108 and the negative power input terminal of the second power switch 102. The power output terminal of the second power switch 102 is electrically connected to the positive power input terminal of the third relay 109.

[0051] Specifically, control structure 5 can be a control circuit, and control structure 5 includes a second power switch 102, a second relay 107, a time switch 108, and a third relay 109 connected via circuit board wiring. The O and P pins of the power output terminal of the time switch 108 and the two power input terminals of the second relay 107 are connected by wires. The corresponding input terminal of the negative power supply of the third relay 109 is connected to the N pin of the negative power supply input terminal of the time switch 108 and the H pin of the negative power supply of the second power switch 102. The J pin of the first power output terminal of the second power switch 102 is connected to the positive power input terminal of the third relay 109.

[0052] It should be noted that, referring to Figure 3The resistor 105 has a resistance of 1KΩ; the transistor 110 is a 9013; the electric push rod 47 is a reciprocating electric telescopic rod; the drive component 121 has a power of 200W; the first relay 103, the second relay 107, and the third relay 109 are all DC24V; the diode 106 is a 1N4007; the solenoid valve 33 has a power of 2W; the battery 7 is a 24V / 200Ah lithium battery; the water pump 21 has a power of 260W; the time switch 108 is a KG316T, which has two power input terminals, two power output terminals, and multiple setting buttons. Operating the setting buttons allows setting the power output time of the two power output terminals.

[0053] It should be noted that, referring to Figure 4 , Figure 5 and Figure 6 The two poles of the battery 7 and the two ends of the charging socket 71, as well as the power input terminals of the control circuit and the I and J pins of the time switch 108, are connected by wires. The second relay 107 can control the power input terminal and the positive terminal of the battery 7, which are connected by wires. The normally closed contact of the second relay 107, the negative terminal of the battery 7, the A and B pins of the first power switch 101 of the multiple detection structures 4, the power input terminal of the multiple detection structures 4, the positive power input terminal of the first relay 103, the emitter of the transistor 110, and the G and H pins of the power input terminal of the second power switch 102 are connected by wires. The signal output terminals of the multiple detection circuits, the negative terminal of the diode 106, the emitter of the transistor 110, the signal input terminals of the control structure 5, and the positive and negative power input terminals of the third relay 109 are connected by wires. The K and L pins of the second power switch 102, the O and P pins of the time control switch 108, the I pin of the second power switch 102, the normally closed contact of the third relay 109, and the positive and negative and negative-positive power input terminals of the drive unit 121 of the multiple wheel mechanisms 12 are connected by wires. The normally closed contact of each first relay 103, the emitter of the transistor 110, and the power input terminal of the solenoid valve 33 of each spray structure 3 are connected by wires. The normally open contact and negative power input terminal of the third relay and the power input terminal of the water pump 21 are connected by wires.

[0054] During use, the water tank is pre-filled with water through the inlet pipe. After turning the handle of the second power switch 102 to the left, pins G and H, and pins I and J of the second power switch 102 are connected. This allows 24V power to flow through the power input terminal and normally closed contact of the second relay 107, the negative terminal of the battery 7, pins G, H, and I of the second power switch 102, and the power input terminal and normally closed contact of the third relay 109, respectively, to the positive and negative power input terminals of the drive components 121 of the four wheel mechanisms 12. The drive components 121 of the four wheel mechanisms 12 drive the wheels 122 to move counterclockwise. Thus, the vehicle body 11 moves the entire equipment forward to detect the humidity of the inner wall of the secondary lining concrete in the tunnel.

[0055] In the multiple testing mechanisms, when the outer side of the conductive bearing 46 of one or more testing mechanisms is not in contact with the inner wall surface of the secondary lining concrete of the tunnel, the elastic element 41 will push the guide rod 45 to move outward along the sleeve 44. When the outer side of the conductive bearing 46 contacts the inner wall surface of the secondary lining concrete of the tunnel, the guide rod 45 will no longer move. Furthermore, before use, the operator moves the handle of the first power switch 101 of the multiple testing mechanisms to the left, connecting pins A and B and pins C and D of the first power switch 101 respectively. In this way, the 24V power supply enters the negative and positive power input terminals of the electric push rod 47 through pins A, B, and C of the first power switch 101 and the electric switch and pin D of the first power switch 101. The movable column of the electric push rod 47 drives the conductive bearing 46 to move outward. When the outer side of the conductive bearing 46 of one or more sets of detection structures 4 does not contact the inner wall surface of the secondary lining concrete of the tunnel, the movable column of the electric push rod 47 will continue to push the guide rod 45 to move outward. When the outer side of the conductive bearing 46 contacts the inner wall surface of the secondary lining concrete of the tunnel, the reverse force of the conductive bearing 46 will push the guide rod 45 to move inward. When the guide rod 45 moves inward by about 3 mm, the rear end of the guide rod 45 no longer presses the button of the power switch. As a result, the internal contacts of the power switch open, and the electric push rod 47 loses power and stops working. At this time, when the staff moves the handle of the first power switch 101 to the right as needed, pins A and B and pins E and F of the first power switch 101 are connected respectively, and the positive and negative power input terminals of the electric push rod 47 are energized. The movable column of the electric push rod 47 drives the conductive bearing 46 to move inward, and the conductive bearing no longer contacts the tunnel wall, facilitating the forward and backward movement of the equipment, etc. Through the above steps, this embodiment can automatically control the outer side of the conductive bearing 46 of multiple sets of detection structures 4 to contact the inner surface of the secondary lining concrete of the tunnel for humidity detection during operation via the elastic element 41 and the electric push rod 47.

[0056] Afterwards, as the vehicle body 11 moves forward, the outer ends of the two conductive bearings 46 of each detection structure 4 will rotate in contact with the corresponding position of the inner wall of the secondary lining concrete of the tunnel. When there is water at the corresponding position, the resistance between the two conductive bearings 46 is small. The 24V power supply enters the base of the transistor 110 through the two conductive bearings 46 spaced 2 mm apart and the resistor 105, which is higher than 0.7V. The transistor 110 conducts and outputs a low level from the collector, which enters the negative power input terminal of the first relay 103. The first relay 103 is energized and the control power input terminal and the normally closed contact terminal are opened. Therefore, the first relay 103 will not be energized and will continue to enter the negative and positive power input terminals of the drive unit 121 of the four-wheel mechanism 12 through the control power input terminal and normally closed contact terminal of the first relay 103. The drive unit 121 of the four-wheel mechanism 12 drives the wheels 122 to move counterclockwise, and the vehicle body 11 moves the entire equipment forward to detect the humidity of the inner wall of the secondary lining concrete of the tunnel.

[0057] In actual testing, the outer ends of the two conductive bearings 46 of one or more sets of detection structures 4 rotate in contact with the corresponding positions of the inner wall of the secondary lining concrete of the tunnel. When there is no water at one or more corresponding positions, the resistance between the two conductive bearings 46 is large. The 24V power supply enters the base of the transistor 110 after being reduced and current limited by the two conductive bearings 46 and the resistor 105. The voltage is lower than 0.7V. The transistor 110 is cut off and the collector no longer outputs a low level, which enters the negative power input terminal of the first relay 103. The first relay 103 is de-energized and no longer engages, controlling the power input terminal and the normally closed contact terminal to close. At the same time, the solenoid valve 33 of the corresponding set of spraying mechanisms will be energized and the valve core will open. Then, the 24V power supply will unidirectionally conduct through diode 106 to the positive power input terminal of the third relay 109. The third relay 109 will be energized, opening its control power input terminal and normally closed contact terminal, closing its control power input terminal and normally open contact terminal, energizing the water pump 21. The 24V power supply will no longer continue to flow through the control power input terminal and normally closed contact terminal of the third relay 109 to the negative and positive power input terminals of the drive unit 121 of the four-wheel mechanism 12. The drive unit 121 of the four-wheel mechanism 12 will drive the wheels 122 to stop counterclockwise movement, and the vehicle body 11 will temporarily move the entire equipment forward to detect the humidity of the tunnel wall. In summary, in this embodiment, when the humidity at any point on the tunnel wall is insufficient, the vehicle body will temporarily stop moving, and the water pump 21 will be energized. When one or more sets of detection structures 4 and detection structures 6 detect insufficient humidity at one or more points, one or more first relays 103 lose power. The water pump 21 then gains power and pumps water from the tank into the main water pipe 24. The pressurized water is then sprayed out as a mist through the front of one or more spray nozzles 32, humidifying one or more locations on the tunnel wall. Once the water mist from the spray nozzles 32 has adequately sprayed onto the inner side of the secondary lining concrete of the tunnel from top to bottom, left to right, or right to left, and the humidity at one or more points is again sufficient as detected by the detection structures 4 and detection structures 6, the first relay 103 is re-energized, opening its control power input terminal and normally closed contact terminal. Consequently, the solenoid valve 33 and water pump 21 lose power again and cease operation. The vehicle body 11 then continues to drive the wheels counterclockwise via the drive components 121 of the four wheel mechanisms 12, performing humidity detection on the tunnel wall from back to front.

[0058] Finally, after the timer switch 108 is energized, its O and P pins will output power to the power input terminal of the second relay 107 at certain intervals. The second relay 107 is energized and its control power input terminal and normally closed contact terminal are opened. Then, multiple detection structures 6 and detection structures 4 will be de-energized and operate. At the same time, the positive and negative power input terminals of the drive components 121 of the four wheel mechanisms 12 will be energized. The drive components 121 of the four wheel mechanisms 12 drive the wheels 122 to move clockwise, gradually moving to the initial position to complete all operations. Before operation, when the operator moves the handle of the second power switch 102 to the right, the G and H pins and K and L pins of the second power switch 102 will be connected, and the positive and negative power input terminals of the drive components 121 of the four wheel mechanisms 12 will be energized. The drive components 121 of the four wheel mechanisms 12 drive the wheels 122 to move clockwise, facilitating the relocation of the equipment. In summary, this embodiment can drive the vehicle body 11 and the equipment mounted on it to move automatically. Through this movement, it continuously detects the humidity at several key locations on the surface of the secondary lining concrete of the tunnel. When the humidity at a given location is insufficient, it can control the entire device to temporarily stop moving and control the spray structure 3 to spray water mist onto the vicinity of that location. Furthermore, after the device has moved to the set inspection distance, it can automatically return to its initial position to recharge and refill water.

[0059] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments in this specification are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tunnel secondary lining moisture retention and curing device, characterized in that, It includes a moving structure (1), a water supply structure (2), a spray structure (3) and a detection structure (4), wherein the moving structure (1) is used to move along the extension direction of the tunnel and the moving structure (1) is connected to the water supply structure (2); The water supply structure (2) includes a main water pipe (24), which is a semi-circular structure, and multiple connecting pipes (241) are spaced apart on the main water pipe (24). The spray structure (3) is provided in multiple ways, and each spray structure (3) is connected to the corresponding connecting pipe (241); The detection structure (4) is provided in multiple ways, and the multiple detection structures (4) are distributed at intervals along the extension direction of the semi-circular main water pipe (24). The detection structure (4) is used to detect the humidity of the secondary lining concrete of the tunnel.

2. The tunnel secondary lining moisture retention and curing equipment according to claim 1, characterized in that, The mobile structure (1) includes a vehicle body (11) and wheel mechanisms (12). The vehicle body (11) is connected to the water supply structure (2), and the vehicle body (11) is connected to a plurality of wheel mechanisms (12). The plurality of wheel mechanisms (12) are used to drive the vehicle body (11) to move along the extension direction of the tunnel.

3. The tunnel secondary lining moisture retention and curing equipment according to claim 2, characterized in that, The water supply structure (2) also includes a water pump (21), an inlet pipe (22), an outlet pipe (23) and a water tank. The water pump (21) and the water tank are both connected to the vehicle body (11). The water tank is connected to the water pump (21) through the outlet pipe (23). The water pump (21) is connected to the main water pipe (24) through the water inlet pipe (22).

4. The tunnel secondary lining moisture retention and curing equipment according to claim 3, characterized in that, The spray structure (3) includes a spray pipe (31), a spray head (32) and a solenoid valve (33). One end of the spray pipe (31) is provided with the spray head (32), and the other end of the spray pipe (31) is connected to the spray pipe (31) through the solenoid valve (33).

5. The tunnel secondary lining moisture retention and curing equipment according to claim 4, characterized in that, The detection structure (4) includes an elastic element (41), a sleeve (44), a guide rod (45), an electric push rod (47), a conductive component, a first power switch (101), and a micro switch (104). One end of the electric push rod (47) is connected to the main water pipe (24), and the other end of the electric push rod (47) is connected to the sleeve (44). The sleeve (44) is provided with an elastic element (41) at one end away from the electric push rod (47), and the guide rod (45) is slidably connected to the sleeve (44), and the guide rod (45) abuts against the elastic element (41); The end of the guide rod (45) facing away from the sleeve (44) is connected to the conductive component, which is used to abut against the inner wall of the tunnel; The first power switch (101) is electrically connected to the electric push rod (47), and the first power switch (101) is electrically connected to one end of the micro switch (104); The other end of the micro switch (104) is electrically connected to the electric push rod (47).

6. The tunnel secondary lining moisture retention and curing equipment according to claim 5, characterized in that, The conductive component includes a support frame (42), an insulating support tube (43), and two conductive bearings (46). One end of the support frame (42) is connected to the guide rod (45), and the support frame (42) is connected to the two sets of conductive bearings (46) through the insulating support tube (43). The two conductive bearings (46) are spaced apart along the extension direction of the insulating support tube (43).

7. The tunnel secondary lining moisture retention and curing equipment according to claim 6, characterized in that, The wheel mechanism (12) includes a drive member (121) and a wheel (122). The drive member (121) is connected to the vehicle body (11), and the output end of the drive member (121) is connected to the wheel (122).

8. The tunnel secondary lining moisture retention and curing equipment according to claim 7, characterized in that, The tunnel secondary lining moisture retention and maintenance equipment also includes a control structure (5), a battery (7) and multiple sets of detection structures (6). The control structure (5), the detection structure (6) and the battery (7) are all connected to the vehicle body (11), and the battery (7) is electrically connected to the control structure (5) and the multiple sets of detection structures (6) respectively. All of the aforementioned detection structures (6) are electrically connected to the control structure (5).

9. The tunnel secondary lining moisture retention and curing equipment according to claim 8, characterized in that, The detection structure (6) includes a first relay (103), a resistor (105), a diode (106) and a transistor (110), wherein the positive power input terminal of the first relay (103) is electrically connected to a conductive bearing (46). Another of the conductive bearings (46) is electrically connected to one end of the resistor (105), and the other end of the resistor (105) is electrically connected to the base of the transistor (110). The collector of the transistor (110) is electrically connected to the negative power input terminal of the first relay (103); The normally closed contact of the first relay (103) is connected to the positive terminal of the diode (106).

10. The tunnel secondary lining moisture retention and curing equipment according to claim 8, characterized in that, The control structure (5) includes a second power switch (102), a second relay (107), a time control switch (108), and a third relay (109). The power output terminal of the time control switch (108) is electrically connected to the power input terminal of the second relay (107). The negative power input terminal of the third relay (109) is electrically connected to the negative power input terminal of the time control switch (108) and the negative power input terminal of the second power switch (102), respectively. The power output terminal of the second power switch (102) is electrically connected to the positive power input terminal of the third relay (109).

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