Water tunnel secondary lining concrete curing device

Abstract

The utility model discloses a water delivery tunnel secondary lining concrete curing device which comprises an upper supporting frame, a frame, a lower supporting frame and supporting telescopic rods, the upper supporting frame comprises a plurality of supporting units which are sequentially arranged in the width direction of a tunnel, the adjacent supporting units are hinged through hinges, and the supporting telescopic rods are arranged between the adjacent supporting units. Due to the characteristics, the device can complete maintenance work in tunnels of any shape and size, and has extremely high adaptive capacity. And besides the water spraying pipe, the heating layer and the heat preservation layer are further arranged outside the device, humidity and temperature maintenance can be conducted on lining concrete at the same time, and the better maintenance effect is achieved compared with a traditional maintenance device.

Description

TECHNICAL FIELD

[0001] The utility model belongs to concrete curing equipment technical field, concretely relates to a water conveying tunnel secondary lining concrete curing device. BACKGROUND

[0002] After concrete pouring, it needs to be cured in time for heat preservation and moisture preservation to prevent stress caused by temperature difference or dry shrinkage and other factors from causing concrete cracks, which will adversely affect the structural state of the building.

[0003] The curing method of concrete can be roughly divided into four types: natural curing, watering curing, steam curing and curing agent curing. Early concrete curing is generally natural curing or watering curing by manual operation. The so-called natural curing is to cover a layer of plastic film or the like on the surface of the poured concrete. If it is ordinary concrete, it needs to wait for seven days, and if it has anti-permeation requirements, it needs to be removed for more than fourteen days. Although watering curing can improve the surface humidity of the lining concrete, it will also reduce the surface temperature of the lining concrete, increase the temperature difference between the inside and outside of the concrete, and increase the probability of temperature cracks. In the later period, professional curing trolleys are gradually formed to cure the lining concrete, but the curing trolley is heavy and inconvenient to enter and exit the construction site, especially for tunnel projects. Moreover, the construction of the tunnel will select different cross-section tunnels according to the topography and geological conditions, and the curing trolley needs to be reassembled according to the cross-section of the tunnel, making the curing work very inconvenient. At present, various departments related to the railway have carried out relevant research on high-performance tunnel curing trolleys and have achieved certain results. For example, Chinese patent, application number: 202310974994.6, name: a tunnel lining concrete curing device, which has a circular support ring with variable size for watering operation, can spray the tunnel lining wall surface in all directions, and can adapt to tunnels of different sizes. In addition, the device also has a tracked chassis, which greatly increases the flexibility. But this device can only be used for circular or approximately circular cross-section tunnels, and this device also does not consider the impact of temperature on concrete. For another example, Chinese patent, application number: 202411128792.0, name: a tunnel concrete lining curing device, which adopts a steam curing method and can be transported by rail. But this device has a fixed shape outside, so it can only be used for a few tunnels with similar shapes and sizes. In addition, the above two devices do not contain control components, and the degree of automation is low, which requires a lot of manpower to operate the device.

[0004] Considering that the water conveying tunnel needs to have impermeability, the maintenance work thereof has higher requirements than the general type of tunnel, and the secondary lining is the lining of the inner layer of the tunnel and has the function of structural support, so that higher requirements are made on the strength of the concrete. Moreover, the water conveying tunnel does not have a fixed shape specification, and the maintenance device thereof needs to have strong adaptability to all shapes and sizes of the tunnel. Practical new type content

[0005] The utility model discloses a kind of water conveying tunnel secondary lining concrete maintenance devices, which is maintained to tunnel by deformable support frame, and it has strong adaptability to various shapes of water conveying tunnel.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] A kind of water conveying tunnel secondary lining concrete maintenance device, including upper support frame, vehicle frame, lower support frame and support telescopic rod.

[0008] Telescopic support leg is installed in vehicle frame, and roller is arranged at the lower end of support leg. Support arm is arranged on vehicle frame, and the lower end of support arm is fixed on vehicle frame, and the upper end is connected to upper support frame. The tunnel extension direction is regarded as the front and back of the device, hinge is arranged at the left and right ends of upper support frame, and lower support frame is hinged to the left and right sides of upper support frame by hinge. Upper support frame includes a plurality of support units arranged in sequence along the width direction of tunnel, adjacent support units are hinged by hinge, and support telescopic rod is arranged between adjacent support units, and both ends of support telescopic rod are hinged on corresponding two support units. Support telescopic rod is also arranged between upper support frame and lower support frame, and both ends of support telescopic rod are correspondingly hinged on support frame and lower support frame.

[0009] The surface of upper support frame and lower support frame facing tunnel wall surface is defined as outer surface, waterproof layer, heating layer and heat preservation layer are sequentially and layerwisely laid on the outer surface of both, wherein waterproof layer is closest to tunnel wall surface. A plurality of nozzles are arranged on the outer side of upper support frame and lower support frame, all nozzles are communicated with water spraying pipe, and water spraying pipe is communicated with water source by water pump.

[0010] In the prior art, tunnel maintenance devices mostly only pay attention to the humidity maintenance of concrete, but do not pay attention to the temperature, and in addition, the existing maintenance devices generally do not have strong adaptability to the shape and size of the tunnel. The device has telescopic supporting legs for adjusting the overall height of the device, and upper and lower supporting frames with the same shape and size perpendicular to the front and rear directions at any position, wherein the upper supporting frame is composed of a plurality of supporting units arranged from left to right, the number of supporting units is variable, and the supporting frames or supporting units are hinged. In this way, the outer surface of the supporting frame can be as closely fitted to the tunnel wall as possible by changing the unfolded shape of the supporting frame. The device can perform maintenance work on various tunnels regardless of the shape and size of the tunnel cross section. In order to improve the maintenance effect, the device can not only maintain the humidity of the tunnel, but also maintain the temperature through the heating layer and the heat preservation layer. The existence of the waterproof layer is to prevent the water used for maintenance from dripping or seeping from the supporting frame and affecting the personnel or equipment in the device. Considering that under the action of gravity, water at the top of the tunnel will flow out faster than water on the side wall, in order to ensure the maintenance effect, more nozzles should be arranged on the upper supporting frame than on the lower supporting frame. The rollers installed at the lowermost part of the device can make the device have a certain mobility.

[0011] Further optimization, the telescopic legs include a through pipe, a trolley telescopic rod and a guide column distributed along the vertical direction, the through pipe is fixedly connected with the frame at the upper end and is open at the lower end, the guide column is movably inserted into the through pipe at the upper half and extends out of the pipe at the lower half. The trolley telescopic rod is connected with the frame at the upper end and is connected with the lower half of the guide column at the lower end, the guide column is provided with a roller frame at the lower end, and the rollers are installed on the roller frame. The telescopic structure composed of the through pipe, the trolley telescopic rod and the guide column is simple and effective for adjusting the overall height of the device, and the existence of the roller frame can protect the rollers to some extent and increase the reliability of the device.

[0012] Further optimization, a cushion is laid on the ground of the water conveying tunnel, and guide rails are arranged on the cushion along the extension direction of the tunnel, the rollers are guide wheels, and the guide wheels are matched with the guide rails. Considering that the ground of the tunnel is usually muddy during the construction stage, the existence of the guide rails can make the device have higher mobility, and it is more labor-saving and safer to move along the guide rails than to move directly on the muddy ground. However, the guide rails may sink into the mud, and in order to avoid this situation, the guide rails need to be provided with a cushion below.

[0013] Further optimization, the secondary lining of the water conveying tunnel comprises lining concrete, and a data acquisition device is embedded in the lining concrete, the data acquisition device comprises a temperature sensor and a humidity sensor, and the data acquisition device is signal connected with a controller; resistance wires are arranged in a heating layer, and the controller is electrically connected with a water pump and the heating layer.

[0014] Further optimization, the outer surfaces of the upper support frame and the lower support frame are outwardly convex arc surfaces.

[0015] Further optimization, a speed reducer motor is arranged on the roller frame to drive the guide wheels.

[0016] Further optimization, the trolley telescopic rod and the support telescopic rod are electric push rods.

[0017] Further optimization, the outer surface of the support unit in the upper support frame is an outwardly convex arc surface, and the outer surface of the lower support frame is a plane.

[0018] Further optimization, the trolley telescopic rod and the support telescopic rod are hydraulic push rods.

[0019] The device has the advantages that:

[0020] The device has the advantages that:

[0021] The device is transported by a track, and the movement of the device along the track can be driven by a speed reducer motor, and has strong maneuverability; the maintenance work of the device can be automatically controlled, manpower is saved, and the device is simple and convenient.

[0022] In necessary cases, the maintenance work of the device can also be manually operated, and has high flexibility in actual application. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A kind of water conveyance tunnel secondary lining concrete maintenance device structure schematic diagram;

[0024] Figure 2 Device structure schematic diagram A place structure enlargement view;

[0025] Figure 3 Device structure schematic diagram B place structure enlargement view. DETAILED DESCRIPTION

[0026] As Figure 1 shown, a kind of water conveyance tunnel secondary lining concrete maintenance device, including upper support frame 2, car frame 4, trolley telescopic rod 5, guide column 6 and lower support frame 7.

[0027] There is the pipe of distribution along vertical direction in car frame 4, the upper end of pipe is fixedly connected with car frame 4, and the lower end is open, the upper half of guide column 6 is movably inserted in pipe, and the lower half is extended out of pipe. The upper end of trolley telescopic rod 5 is connected with car frame 4, and the lower end is connected on the lower half of guide column 6, the lower end of guide column 6 is equipped with roller frame, and roller 9 is installed on roller frame. Speed reduction drive motor 8 is also equipped on roller frame to drive the rotation of roller 9. Lining 16 is laid on the ground of water conveyance tunnel, lining 16 has guide rail 15 along the extension direction of tunnel, roller 9 is guide wheel, and the specification of guide wheel is adapted to guide rail 15, and its structure is as shown in Figure 3 Support arm 3 is equipped on car frame 4, the lower end of support arm 3 is fixed on car frame 4, and the upper end is connected to upper support frame 2. With the extension direction of tunnel as the front and back of device, hinge 14 is equipped on the left and right ends of upper support frame 2, and lower support frame 7 is hinged to the left and right sides of upper support frame 2 through hinge 14, and upper support frame 2 includes three support units arranged in turn along the width direction of tunnel, adjacent support units are hinged through hinge 14, and support telescopic rod 13 is equipped between adjacent support units, and the two ends of support telescopic rod 13 are hinged on corresponding two support units. Support telescopic rod 13 is also equipped between upper support frame 2 and lower support frame 7, and the two ends of support telescopic rod 13 are correspondingly hinged on support frame 2 and lower support frame 7 respectively, and its structure is as shown in Figure 2 Telescopic rod 5 and support telescopic rod 13 are all electric push rods, the outer surface of support unit in upper support frame 2 is outwardly convex arc surface, and the outer surface of lower support frame 7 is plane.

[0028] The outer surface of the upper support frame 2 and the lower support frame 7 is the surface facing the tunnel wall surface, and a waterproof layer 10, a heating layer 11 and a heat preservation layer 12 are sequentially and layerwisely laid on the outer surface of the upper support frame 2 and the lower support frame 7, wherein the waterproof layer 10 is closest to the tunnel wall surface, and a plurality of nozzles 17 are arranged on the outer side of the upper support frame 2 and the lower support frame 7, all the nozzles 17 are in communication with a water spraying pipe, and the water spraying pipe is in communication with a water source through a water pump.

[0029] The secondary lining that needs to be maintained in the water conveying tunnel is the lining concrete 1, and the data acquisition equipment is embedded in the lining concrete 1, the data acquisition equipment comprises a temperature sensor and a humidity sensor, and the data acquisition equipment is signal connected with a controller. The heating layer 11 is provided with resistance wires, the controller is a control assembly capable of realizing automatic control, and the controller is electrically connected with the water pump and the heating layer 11.

[0030] It can be understood that the adjustment of the overall height of the device can be realized through other types of telescopic structures in addition to the telescopic structure composed of the frame 4, the trolley telescopic rod 5 and the guide column 6.

[0031] It can be understood that the number of support units constituting the upper support frame 2 can also exceed three, which is determined according to the end surface shape and size of the tunnel.

[0032] It can be understood that the trolley telescopic rod 5 and the support telescopic rod 13 can also be hydraulic push rods.

[0033] It can be understood that the device can also not have the speed reducer 8.

[0034] It can be understood that the guide rail 15 and the gasket 16 can also be absent, and the roller 9 can also not be a guide wheel.

[0035] It can be understood that for the tunnel with an arc-shaped surface on the entire wall surface, the outer surface of the upper support frame and the lower support frame is an outwardly protruding arc surface.

[0036] In addition, those skilled in the art can make other changes within the spirit of the present application, and these changes made according to the spirit of the present application should be included in the scope of protection claimed by the present application.

Claims

1. A device for curing secondary lining concrete of a water conveyance tunnel, characterized in that: The device comprises an upper support frame (2), a vehicle frame (4), a lower support frame (7) and support telescopic rods (13); The vehicle frame (4) is provided with telescopic supporting legs, and the lower ends of the supporting legs are provided with rollers (9); the vehicle frame (4) is provided with a support arm (3), the lower end of the support arm (3) is fixed on the vehicle frame (4), and the upper end of the support arm (3) is connected to the upper support frame (2); the upper support frame (2) is provided with hinges (14) at the left and right ends thereof in the direction of extension of the tunnel, and the lower support frame (7) is hingedly connected to the left and right sides of the upper support frame (2) through the hinges (14); the upper support frame (2) comprises a plurality of support units arranged in sequence in the direction of width of the tunnel, the adjacent support units are hingedly connected through the hinges (14), and the support telescopic rods (13) are arranged between the adjacent support units, the two ends of the support telescopic rods (13) are hingedly connected to the corresponding two support units, and the support telescopic rods (13) are also arranged between the upper support frame (2) and the lower support frame (7), and the two ends of the support telescopic rods (13) are correspondingly hingedly connected to the upper support frame (2) and the lower support frame (7) respectively; The outer surfaces of the upper support frame (2) and the lower support frame (7) are defined as the surfaces facing the tunnel wall, and the outer surfaces of the upper support frame (2) and the lower support frame (7) are sequentially and layerwisely provided with a waterproof layer (10), a heating layer (11) and a heat preservation layer (12), wherein the waterproof layer (10) is closest to the tunnel wall; a plurality of nozzles (17) are arranged on the outer sides of the upper support frame (2) and the lower support frame (7), all the nozzles (17) are in communication with a water spraying pipe, and the water spraying pipe is in communication with a water source through a water pump.

2. A device for curing secondary lining concrete of a water conveyance tunnel according to claim 1, characterized in that: The telescopic supporting leg comprises a through pipe, a trolley telescopic rod (5) and a guide column (6) distributed in the vertical direction, the upper end of the through pipe is fixedly connected to the vehicle frame (4), and the lower end of the through pipe is open; the upper half of the guide column (6) is movably inserted into the through pipe, and the lower half of the guide column (6) extends out of the pipe; the upper end of the trolley telescopic rod (5) is connected to the vehicle frame (4), and the lower end of the trolley telescopic rod (5) is connected to the lower half of the guide column (6); the lower end of the guide column (6) is provided with a roller frame, and the roller (9) is mounted on the roller frame.

3. A device for curing secondary lining concrete of a water conveyance tunnel according to claim 2, characterized in that: A cushioning material (16) is arranged on the ground of the water conveying tunnel, and the cushioning material (16) is provided with guide rails (15) arranged in the direction of extension of the tunnel; the roller (9) is a guide wheel, and the guide wheel is matched with the guide rails (15) in specification.

4. A device for curing secondary lining concrete of a water conveyance tunnel according to claim 3, characterized in that: The secondary lining of the water conveying tunnel comprises lining concrete (1), and the lining concrete (1) is embedded with a data acquisition device; the data acquisition device comprises a temperature sensor and a humidity sensor, and the data acquisition device is signal connected with a controller; the heating layer (11) is provided with resistance wires; and the controller is electrically connected with the water pump and the heating layer (11).

5. A device for curing secondary lining concrete of a water conveyance tunnel according to claim 4, characterized in that: The outer surfaces of the upper support frame (2) and the lower support frame (7) are both outwardly convex arc surfaces. Alternatively, the outer surface of the upper support frame (2) is an outwardly convex arc surface, and the outer surface of the lower support frame (7) is a plane.

6. A device for curing secondary lining concrete of a water conveyance tunnel according to claim 5, characterized in that: A speed reduction motor (8) for driving the roller (9) is arranged on the roller frame.

7. A device for curing secondary lining concrete of a water conveyance tunnel according to claim 6, characterized in that: The trolley telescopic rod (5) and the support telescopic rod (13) are both electric push rods or hydraulic push rods.

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