Tunnel concrete constant temperature and humidity closed curing system

Abstract

This utility model belongs to the field of tunnel maintenance and construction technology, specifically a closed-loop curing system for tunnel concrete with constant temperature and humidity. It comprises an automatic walking system, a constant temperature and humidity system, a closed-loop system, and a control system. Through the coordinated operation of these systems, closed-loop and controlled curing of concrete is achieved, resulting in good curing effect and a high degree of automation. This effectively solves the technical problems of poor curing effect and difficulty in guaranteeing the quality and service life of the lining. Furthermore, both mobile trolleys are equipped with closed curtains on their outer sides, providing a closed curing environment for the sprayed concrete, which helps reduce moisture loss and improve curing effect. The closed curing environment can be flexibly adjusted as the front and rear mobile trolleys move.

Description

Technical Field

[0001] This utility model relates to the field of tunnel maintenance and construction technology, specifically a closed-loop maintenance system for tunnel concrete with constant temperature and humidity. Background Technology

[0002] In tunnels, high-speed trains passing through generate significant wind tunnel effects, easily putting considerable pressure on the tunnel's surface concrete. Therefore, the tunnel structure must not only accommodate settlement deformation but also withstand the wind pressure from passing trains, ensuring structural stability, preventing concrete surface cracking, and avoiding any safety hazards. This requires tunnel concrete to possess both sufficient strength and durability. After concrete pouring, the continuous construction of the tunnel structure prevents the formation of a sealed space, leading to inadequate curing. Without timely curing, rapid evaporation of moisture from the concrete surface causes dehydration, preventing the cement particles that have formed a gel from fully hydrating and transforming into stable crystals. This lack of sufficient bonding strength can pose a safety hazard to high-speed trains.

[0003] Currently, in domestic tunnel construction, tunnel linings are generally cured naturally, with only a few projects using simple water spraying. These curing methods are highly susceptible to external environmental and human factors, resulting in poor curing effectiveness and difficulty in guaranteeing the quality and service life of the lining. Utility Model Content

[0004] In order to overcome the above-mentioned defects in the existing technology, this utility model provides a closed curing system for tunnel concrete with constant temperature and humidity.

[0005] A closed-loop curing system for tunnel concrete with constant temperature and humidity, comprising:

[0006] The automatic walking system includes two opposing moving trolleys installed on the curing track. The front moving trolley moves with the progress of the pouring work, while the rear moving trolley controls its walking distance and number of reciprocations according to set parameters.

[0007] The constant temperature and humidity system includes a spraying device installed on the rear mobile trolley. The spraying device sprays the poured concrete along the movement trajectory of the rear mobile trolley to keep the concrete within the curing humidity range. Temperature measuring elements are embedded in the concrete poured into the tunnel wall. The temperature measuring elements detect the concrete temperature and transmit signals. The heating device heats the spraying water according to the temperature signal to control the concrete curing temperature.

[0008] The closed system includes closed curtains on the opposite sides of the front and rear mobile trolleys. The shape of the closed curtains is adapted to the inner contour of the tunnel. The two closed curtains adjust the sealed maintenance space as the front and rear mobile trolleys move.

[0009] The control system is electrically connected to the automatic walking system and the constant temperature and humidity system.

[0010] Furthermore, the spraying device includes a spraying pipe installed on a rear-end mobile trolley. The spraying pipe is adapted to the inner wall contour of the tunnel. The spraying pipe is connected to a water storage tank via a water pump. The inlet of the water storage tank is connected to a filter for filtering the spraying water via a pipe.

[0011] Furthermore, protective railings are provided on both sides of the rear mobile trolley, and the spray pipe is fixedly installed on the inner protective railing.

[0012] Furthermore, a fixing frame is provided on the outer guardrail, and the enclosed curtain is fixedly installed on the fixing frame.

[0013] Furthermore, the inlet of the filter is connected to the heating device via a pipe.

[0014] Furthermore, the water storage tank is fixedly installed on the rear mobile trolley by a positioning component. The positioning component includes several positioning seats installed on the mobile trolley. The positioning seats are connected to positioning screws. One end of the positioning screw near the water storage tank is rotatably connected to a clamping plate, and the other end is provided with a rotating handle. The clamping plate is also provided with a guide rod, and the guide rod is slidably connected to the positioning seat.

[0015] Furthermore, the spray pipe is evenly distributed with multiple spray heads that spray water onto the concrete inside the tunnel wall.

[0016] Furthermore, the enclosed curtain is equipped with a door curtain.

[0017] Furthermore, the constant temperature and humidity system also includes a fog cannon located between two enclosed curtains.

[0018] Due to the adoption of the above technical solutions, the beneficial technical effects of this utility model are:

[0019] 1. In this utility model, after the tunnel concrete is poured, the concrete is sprayed and cured by a curing system, which helps to prevent the concrete from cracking. Two opposing mobile trolleys are set up, and a spraying device is installed on the rear mobile trolley. During the movement of the rear mobile trolley, the poured concrete can be sprayed and cured by the spraying device. After the spraying is completed, the rear mobile trolley moves to the initial position. The two mobile trolleys are driven by a drive mechanism, and their travel distance and route can be controlled. The travel distance can be set according to the length of the poured concrete, and the travel route of the rear mobile trolley needs to be set according to the number of sprays. By moving the front and rear mobile trolleys, the curing space can be flexibly adjusted as needed.

[0020] 2. In this utility model, both mobile trolleys are equipped with enclosed curtains on their outer sides, thereby providing a closed curing environment for the sprayed concrete, which helps to reduce moisture loss and improve the curing effect. Moreover, the closed curing environment can be flexibly adjusted as the front and rear mobile trolleys move.

[0021] 3. In this utility model, a temperature measuring element is embedded in the poured concrete to detect the concrete temperature and transmit a signal. The temperature of the spray water is controlled by the control system, which helps to ensure that the temperature difference between the concrete and the spray water is controlled within a certain range, preventing the spray water temperature from being too low, causing the concrete to crack and affecting the curing effect.

[0022] 4. This utility model achieves closed curing and controlled curing of concrete through the coordinated operation of an automatic walking system, a constant temperature and humidity system, a closed system, and a control system. The curing effect is good and the degree of automation is high, effectively solving the technical problems of poor curing effect and difficulty in ensuring the quality and service life of lining. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a closed curing system for constant temperature and humidity of tunnel concrete according to the present invention.

[0024] Figure 2 This is a front view of the mobile trolley in this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the mobile trolley in this utility model;

[0026] Figure 4 This is a schematic diagram of the positioning component fixing the water storage tank in this utility model.

[0027] In the diagram: 1. Maintenance track; 2. Mobile trolley; 3. Enclosed curtain; 4. Spray pipe; 5. Spray head; 6. Water pump; 7. Water storage tank; 8. Filter; 11. Guardrail; 12. Fixing frame; 13. Positioning seat; 14. Positioning screw; 15. Clamping plate; 16. Rotating handle; 17. Guide rod; 18. Door curtain. Detailed Implementation

[0028] To more clearly illustrate the technical solution of this utility model, the following description is made in conjunction with the accompanying drawings. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings and embodiments without creative effort, and all of them fall within the protection scope of this utility model.

[0029] according to Figure 1-4 As shown, a closed curing system for tunnel concrete with constant temperature and humidity includes:

[0030] The automatic walking system includes two opposing moving trolleys installed on the curing track 1. The front moving trolley moves with the progress of the pouring work, and the rear moving trolley 2 controls its walking distance and number of reciprocations according to the set parameters.

[0031] The constant temperature and humidity system includes a spraying device installed on the rear mobile trolley 2. The spraying device sprays the poured concrete along the movement trajectory of the rear mobile trolley 2 to keep the concrete within the curing humidity range. Temperature measuring elements are embedded in the concrete poured in the inner wall of the tunnel. The temperature measuring elements detect the concrete temperature and transmit signals. The heating device heats the spraying water according to the temperature signal to control the concrete curing temperature.

[0032] The closed system includes a closed curtain 3 on the opposite sides of the front and rear mobile trolleys 2. The shape of the closed curtain 3 is adapted to the inner contour of the tunnel. The two closed curtains 3 adjust the sealed maintenance space as the front and rear mobile trolleys 2 move.

[0033] The control system is electrically connected to the automatic walking system and the constant temperature and humidity system.

[0034] In the above-mentioned specific technical solution, after the tunnel concrete is poured, the concrete is sprayed for curing through a curing system, which helps to prevent the concrete from cracking. Two opposing mobile trolleys are set up, with a spraying device installed on the rear mobile trolley 2. During the movement of the rear mobile trolley 2, the poured concrete can be sprayed for curing through the spraying device. After spraying is completed, the rear mobile trolley 2 moves back to its initial position. The two mobile trolleys are driven by a drive mechanism, and their travel distance and route can be controlled. The travel distance can be set according to the length of the poured concrete, and the travel route of the rear mobile trolley 2 needs to be set according to the number of sprays. By moving the front and rear mobile trolleys, the curing space can be flexibly adjusted as needed. Since both mobile trolleys are equipped with enclosed curtains 3 on their outer sides, a closed curing environment is provided for the sprayed concrete, which helps to reduce moisture loss and improve the curing effect.

[0035] Preferably, a temperature sensing element is embedded in the poured concrete to detect the concrete temperature and transmit a signal. The temperature of the spray water is controlled by the control system, which helps to ensure that the temperature difference between the concrete and the spray water is controlled within a certain range, preventing the spray water temperature from being too low, causing the concrete to crack and affecting the curing effect.

[0036] This invention achieves closed and controlled curing of concrete through the coordinated operation of an automatic walking system, a constant temperature and humidity system, a closed system, and a control system. It provides good curing results and a high degree of automation, effectively solving the technical problems of poor curing effect and difficulty in ensuring the quality and service life of lining.

[0037] Furthermore, the spraying device includes a spraying pipe 4 installed on the rear mobile trolley 2. The spraying pipe 4 is adapted to the inner wall contour of the tunnel. The spraying pipe 4 is connected to a water storage tank 7 via a water pump 6. The inlet of the water storage tank 7 is connected to a filter 8 for filtering the spraying water via a pipe.

[0038] Specifically, the spraying device includes a water storage tank 7 for storing spraying water. The inlet of the water storage tank 7 is connected to a filter 8. The filter 8 can effectively filter substances in the spraying water that have an corrosive effect on concrete, thereby improving the curing effect of concrete. The filtered spraying water is transported to the spraying pipe 4 by the water pump 6. The spraying pipe 4 is fixedly installed on the rear mobile trolley 2. The movement of the rear mobile trolley 2 continuously sprays the inner wall of the tunnel, ensuring that the concrete after pouring is kept within a certain humidity range. By controlling the number of reciprocating motions and the moving speed of the mobile trolley 2, the effect of spraying curing can be controlled.

[0039] Furthermore, both sides of the rear mobile trolley 2 are equipped with guardrails 11, and the spray pipe 4 is fixedly installed on the inner guardrail 11.

[0040] Furthermore, a fixing frame 12 is provided on the outer guardrail 11, and the closed curtain 3 is fixedly installed on the fixing frame 12.

[0041] Preferably, the spray pipe 4 is located inside the closed curtain 3, and the spraying is always in the closed space created by the two closed curtains 3. After the spraying is completed, the rear moving trolley 2 moves to the initial position of the spraying, so that the sprayed tunnel concrete is in the closed space, reducing the loss of moisture and improving the curing effect.

[0042] Furthermore, the inlet of the filter 8 is connected to a heating device via a pipe. By setting up a heating device (not shown in the figure), the spray water is heated according to the signal feedback from the temperature sensing element, thereby ensuring that the temperature difference between the spray water and the concrete is maintained within a certain range, preventing the spray water temperature from being too low and affecting the curing effect. The heating device can be a device for heating liquids in the prior art.

[0043] Furthermore, the water storage tank 7 is fixedly installed on the rear mobile trolley 2 by a positioning assembly. The positioning assembly includes several positioning seats 13 installed on the mobile trolley 2. The positioning seats 13 are connected to the positioning screws 14. One end of the positioning screws 14 near the water storage tank 7 is rotatably connected to a clamping plate 15, and the other end is provided with a rotating handle 16. The clamping plate 15 is also provided with a guide rod 17, which is slidably connected to the positioning seats 13. The positioning assembly fixes the water storage tank 7 on the rear mobile trolley 2, preventing the water storage tank 7 from relative displacement or shaking during the movement of the rear mobile trolley 2, which would affect the connection between the pipes. By rotating the positioning screws 14, the clamping plates 15 are moved towards the water storage tank 7, so that the multiple clamping plates 15 cooperate to clamp the water storage tank 7.

[0044] Furthermore, the spray pipe 4 is evenly distributed with multiple spray heads 5 that spray water onto the concrete inside the tunnel wall. Preferably, the spray head 5 has a wide spray range, and the multiple spray heads 5 are arranged linearly. By coordinating the spraying, the concrete inside the tunnel wall can be effectively kept at a certain level of humidity.

[0045] Furthermore, the enclosed curtain 3 is equipped with a door curtain 18, through which staff can enter and exit the enclosed maintenance environment to ensure the normal operation of other tasks.

[0046] Furthermore, the constant temperature and humidity system also includes a fog cannon located between two enclosed curtains 3. When the rear moving trolley 2 sprays the poured concrete and moves to the initial spraying position, the fog cannon (not shown in the figure) is moved into the enclosed curing space. Water mist is sprayed into the air through the fog cannon to maintain the humidity in the curing environment and improve the curing effect. The specific structure of the fog cannon is not known in the prior art.

[0047] The above embodiments are merely exemplary embodiments of the present utility model and are not intended to limit the present utility model. The scope of protection of the present utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present utility model.

Claims

1. A closed-loop curing system for tunnel concrete with constant temperature and humidity, characterized in that, include: The automatic walking system includes two opposing mobile trolleys installed on the maintenance track (1). The front mobile trolley moves with the progress of the pouring work, and the rear mobile trolley (2) controls its walking distance and number of reciprocations according to the set parameters. The constant temperature and humidity system includes a spraying device installed on the rear mobile trolley (2). The spraying device sprays the poured concrete along the movement trajectory of the rear mobile trolley (2) to keep the concrete within the curing humidity range. Temperature measuring elements are embedded in the concrete poured in the inner wall of the tunnel. The temperature measuring elements detect the concrete temperature and transmit signals. The heating device heats the spraying water according to the temperature signal to control the concrete curing temperature. The closed system includes a closed curtain (3) on the opposite sides of the front and rear mobile trolleys (2). The shape of the closed curtain (3) is adapted to the inner contour of the tunnel. The two closed curtains (3) adjust the sealed maintenance space as the front and rear mobile trolleys (2) move. The control system is electrically connected to the automatic walking system and the constant temperature and humidity system.

2. The closed-loop curing system for constant temperature and humidity of tunnel concrete according to claim 1, characterized in that, The spraying device includes a spray pipe (4) installed on the rear mobile trolley (2). The spray pipe (4) is adapted to the inner wall contour of the tunnel. The spray pipe (4) is connected to a water storage tank (7) via a water pump (6). The inlet of the water storage tank (7) is connected to a filter (8) for filtering the spray water via a pipe.

3. The closed-loop curing system for constant temperature and humidity of tunnel concrete according to claim 2, characterized in that, The rear mobile trolley (2) is equipped with guardrails (11) on both sides, and the spray pipe (4) is fixedly installed on the inner guardrail (11).

4. The closed-loop curing system for constant temperature and humidity of tunnel concrete according to claim 3, characterized in that, A fixing frame (12) is provided on the outer guardrail (11), and the closed curtain (3) is fixedly installed on the fixing frame (12).

5. A closed-loop curing system for constant temperature and humidity of tunnel concrete according to claim 2, characterized in that, The inlet of the filter (8) is connected to the heating device via a pipe.

6. The closed-loop curing system for constant temperature and humidity of tunnel concrete according to claim 2, characterized in that, The water storage tank (7) is fixedly installed on the rear mobile trolley (2) by a positioning component. The positioning component includes several positioning seats (13) installed on the mobile trolley (2). The positioning seats (13) are connected to the positioning screws (14). The positioning screws (14) are rotatably connected to a clamping plate (15) at one end near the water storage tank (7), and a rotating handle (16) is provided at the other end. The clamping plate (15) is also provided with a guide rod (17), and the guide rod (17) is slidably connected to the positioning seat (13).

7. A closed-loop curing system for constant temperature and humidity of tunnel concrete according to claim 3, characterized in that, The spray pipe (4) is evenly distributed with multiple spray heads (5) that spray water onto the concrete inside the tunnel wall.

8. The closed-loop curing system for constant temperature and humidity of tunnel concrete according to claim 1, characterized in that, The enclosed curtain (3) is equipped with a door curtain (18).

9. A closed-loop curing system for constant temperature and humidity of tunnel concrete according to claim 1, characterized in that, The constant temperature and humidity system also includes a fog cannon located between two enclosed curtains (3).

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