Mass concrete temperature-control crack-prevention temperature-control curing device and method

Abstract

The invention provides a mass concrete temperature control anti-crack temperature control curing device and method, and belongs to the technical field of concrete curing equipment.The mass concrete temperature control anti-crack temperature control curing device comprises concrete, a circulating water channel is formed in the concrete, a water inlet hole and a water outlet hole are formed in the upper end and the lower end of the circulating water channel respectively, and a first sensor is arranged in the concrete; a second sensor is attached to the surface of the concrete, water can circularly flow in the concrete through the design of a circulating water channel, a water inlet hole and a water outlet hole in the concrete, so that the water is absorbed from the interior of the concrete, the maintenance efficiency is improved, and the maintenance cost is reduced. In addition, the first sensor and the second sensor are preset in advance during pouring, so that the internal and external temperature difference of the concrete can be tested in advance during curing, and the part with higher temperature can be used for spraying water for cooling during curing, so that the internal and external temperature difference is reduced, and the concrete cracking phenomenon caused by overlarge internal and external temperature difference is prevented.

Description

Technical Field

[0001] The invention relates to a temperature control and crack prevention temperature control and curing device and method for large-volume concrete, belonging to the technical field of concrete curing equipment. Background Art

[0002] The reason why concrete can gradually solidify and harden after pouring is mainly due to the hydration of cement, and hydration requires appropriate temperature and humidity conditions. Therefore, in order to ensure that the concrete has suitable hardening conditions and its strength continues to increase, the concrete must be watered and cured.

[0003] The existing concrete curing is simply spraying water on the concrete surface. However, the concrete wall thickness used in the construction project of the subway station is relatively thick. With simple surface spraying, it takes a long time for water to penetrate from the concrete surface to the interior, and a large amount of water is required, resulting in low curing efficiency. In addition, since the curing equipment is only composed of a simple water pump and a water pipe, the water cannot be recycled, resulting in a waste of water resources. In view of the above problems, the present invention proposes a large-volume concrete temperature control and crack prevention temperature control curing device. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a large-volume concrete temperature control and crack prevention temperature control and maintenance device and method to solve the existing problems.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized by the following technical scheme: a large-volume concrete temperature control and anti-crack temperature control curing device, comprising concrete, and a circulating water channel is opened inside the concrete, and a water inlet and a water outlet are opened at the upper and lower ends of the circulating water channel, respectively, a first sensor is built into the concrete, and a second sensor is attached to the surface of the concrete, and also includes a water supply and spraying equipment for concrete curing, the water supply and spraying equipment includes a mobile vehicle, a spraying mechanism vertically arranged on the mobile vehicle, and a spraying pump group arranged in the middle of the mobile vehicle, a water collecting mechanism is horizontally arranged on the right side of the mobile vehicle, and a power supply, a temperature detector and an operating table are arranged on the left side of the mobile vehicle, the spraying mechanism, the water collecting mechanism, and the spraying pump group are interconnected through a pipeline, the spraying mechanism, the spraying pump group, the water collecting mechanism, the power supply, and the temperature detector are electrically connected to the operating table, the first sensor, the second sensor and the temperature detector are movably electrically connected, the water outlet is movably extended to the water collecting mechanism cavity through a pipeline, and a water outlet end on the spraying pump group is movably connected to the water inlet through a pipeline; The spray mechanism comprises an outer tube, a first telescopic inner tube sleeved from top to bottom in the outer tube cavity, and a second telescopic inner tube sleeved from top to bottom in the first telescopic inner tube cavity, a spray head group vertically aligned with the water collecting mechanism is transversely arranged at the upper end of the second telescopic inner tube, a first motor is engaged with the first telescopic inner tube, and a second motor is engaged with the second telescopic inner tube; The water collecting mechanism includes a fixed seat, an expander arranged transversely on the fixed seat, and a buffer component arranged on the right side of the expander. A water collecting tank group is arranged on the right side of the buffer component, and a plurality of supporting slide rods are arranged transversely on the left side of the buffer component, and the other end of each supporting slide rod passes through the fixed seat.

[0006] A further improvement is that a water pump installation groove is provided on the top surface of the mobile vehicle, a water pump installation room is provided on the left side of the mobile vehicle, and a water collecting mechanism activity room is provided on the right side of the mobile vehicle. The water pump installation groove and the water pump installation room are connected by a first pipe opening, the water pump installation room and the water collecting mechanism activity room are connected by a second pipe opening, an activity opening is provided on the right side of the water collecting mechanism activity room, and a hand push rack is provided on the left side of the top surface of the mobile vehicle.

[0007] A further improvement is that a first meshing opening is provided at the upper end of the front side surface of the outer tube, a first rack is vertically arranged on the front side surface of the first telescopic inner tube, a first gear meshing with the first rack is provided on the first motor, a second meshing opening is provided at the upper end of the front side surface of the first telescopic inner tube, a second rack is vertically arranged on the front side surface of the second telescopic inner tube, and a second gear meshing with the second rack is provided on the second motor.

[0008] A further improvement is that the spray head group includes a horizontal frame and a rotating frame movably connected to the right end of the horizontal frame, and the two are locked at a fixed angle by a locking piece. The right end of the rotating frame is connected to the spray head body, and a water collecting bracket and a water collecting basin are aligned below the spray head body, and a second drain pipe is connected to the bottom of the water collecting basin.

[0009] A further improvement is that the spray pump group includes a water pump, and the water inlet end of the water pump is connected to a valve group, and the water outlet end of the water pump is connected to a four-way switching valve, the lower valve port of the four-way switching valve is connected to an air pump through an air intake hose, the left valve port of the four-way switching valve is connected to the spray head body through a hose, and the right valve port of the four-way switching valve is movably connected to the water inlet hole through a hose.

[0010] As a further improvement, the valve group includes a valve tube, and a first three-way valve and a second three-way valve are connected to the valve tube body, and the lower valve port of the first three-way valve is connected to an external water tank through a hose.

[0011] A further improvement is that the buffer assembly includes a fixed plate and a movable plate, a plurality of sliding rods are movably sleeved between the fixed plate and the movable plate, and each sliding rod body is sleeved with a spring, and a plurality of sleeves for sliding of the sliding rods are embedded in the fixed plate at intervals.

[0012] A further improvement is that the water collecting tank group includes a water collecting tank body, a water inlet tank port opened on the top surface of the water collecting tank body, and an elastic pressure pad is attached to the right side surface of the water collecting tank body, and an oblique cut communicating with the water inlet tank port is opened at the upper end of the elastic pressure pad, a first drain pipe is connected to the bottom surface of the water collecting tank body, a protrusion is provided at the upper end of the right side surface of the oblique cut, the other end of the first drain pipe is connected to the second three-way valve through a hose, and the water outlet hole is movably extended to the water collecting tank body cavity through a pipe.

[0013] In addition, the present invention also provides a working method of the above-mentioned large-volume concrete temperature control and crack prevention temperature control and maintenance device, the method is as follows: S1: Before maintenance, the temperature difference between the concrete surface and the interior must be tested by electrically connecting the first sensor and the second sensor through a temperature detector to measure the temperature difference; S2: Then perform internal curing of the concrete; S3: After the concrete is cured, the circulating waterway needs to be drained; S4: Then the concrete surface is cured; S5: Finally, when you want to maintain the concrete top wall, just adjust the direction of the sprinkler head body upwards.

[0014] The beneficial effects of the invention are: The present invention provides a large-volume concrete temperature control and crack prevention temperature control and maintenance device and method. Through the design of a circulating water channel, a water inlet hole and a water outlet hole on the concrete, water can circulate inside the concrete, so that the water is absorbed from the inside of the concrete, and the maintenance efficiency is accelerated. In addition, the first sensor and the second sensor are preset in advance during pouring, so that during maintenance, the internal and external temperature difference of the concrete can be tested in advance, so that during maintenance, water can be sprayed at a higher temperature position for cooling, thereby reducing the internal and external temperature difference and preventing the concrete from cracking due to excessive internal and external temperature difference.

[0015] The water supply and spraying equipment composed of the mobile vehicle, the spraying mechanism, the spraying pump group, the water collecting mechanism, the power supply, the temperature detector and the operating table can circulate water supply to the interior of the concrete, and after the internal circulating water supply and maintenance, the water retained in the circulating waterway can be drained and collected by injecting pressurized air to prevent the retained water in the circulating waterway from flowing out after the connecting pipes between the equipment and the water inlet and the water outlet are disconnected, causing waste of water resources. In addition, the maintenance equipment can also perform spraying operations on the surface of the concrete. During the spraying maintenance, the water flowing down on the wall surface can be collected and recycled, so that during the spraying maintenance, when spraying at the end point on the concrete surface, the absorption of water by the concrete surface is less than the spraying flow rate, causing a large amount of water to flow down, which can be collected in time and recycled again. The top wall of the concrete building can also be sprayed by simply adjusting the direction of the spray head, and the excess water during the maintenance can also be collected and recycled in time to avoid waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a temperature control and crack prevention temperature control and curing device for large-volume concrete according to the present invention; Figure 2 This is a schematic diagram of the structure of the mobile vehicle of the present invention; Figure 3 It is a schematic diagram of the structure of the spray mechanism of the present invention; Figure 4 It is a schematic diagram of the structure of the spray head group of the present invention; Figure 5 It is a schematic diagram of the structure of the spray pump group of the present invention; Figure 6 This is a schematic diagram of the water collection mechanism structure of the present invention; Figure 7 This is a schematic diagram of the structure of the water collecting tank group of the present invention; Figure 8 It is a schematic diagram of the concrete soil wall structure of the present invention. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0018] See also Figure 1-Figure 8The present invention provides a large-volume concrete temperature control and crack prevention temperature control curing device and method schematic diagram technical solution: comprising concrete 8, and a circulating water channel 81 is opened inside the concrete 8, and the upper and lower ends of the circulating water channel 81 are respectively opened with a water inlet hole 82 and a water outlet hole 83, the concrete 8 is internally provided with a first sensor 84, the surface of the concrete 8 is attached with a second sensor 85, and also includes a water supply spraying device for curing the concrete 8, the water supply spraying device includes a mobile vehicle 1, a spraying mechanism 2 vertically arranged on the mobile vehicle 1, and a spray pump group 3 arranged in the middle of the mobile vehicle 1, the A water collecting mechanism 4 is laterally arranged on the right side of the mobile vehicle 1, and a power supply 5, a thermometer 6 and an operating table 7 are arranged on the left side of the mobile vehicle 1. The spray mechanism 2, the water collecting mechanism 4 and the spray pump group 3 are interconnected by a pipeline, and the spray mechanism 2, the spray pump group 3, the water collecting mechanism 4, the power supply 5, the thermometer 6 are electrically connected to the operating table 7, the first sensor 84, the second sensor 85 are movably electrically connected to the thermometer 6, the water outlet 83 is movably extended into the cavity of the water collecting mechanism 4 through a pipeline, and a water outlet end on the spray pump group 3 is movably connected to the water inlet 82 through a pipeline.

[0019] A water pump installation groove 11 is provided on the top surface of the mobile vehicle 1, a water pump installation room 12 is provided on the left side of the mobile vehicle 1, and a water collecting mechanism activity room 13 is provided on the right side of the mobile vehicle 1. The water pump installation groove 11 and the water pump installation room 12 are connected via a first pipe opening 14, the water pump installation room 12 and the water collecting mechanism activity room 13 are connected via a second pipe opening 15, an activity opening 16 is provided on the right side of the water collecting mechanism activity room 13, and a hand push rack 17 is provided on the left side of the top surface of the mobile vehicle 1.

[0020] The spray mechanism 2 includes an outer tube 21, a first telescopic inner tube 22 sleeved from top to bottom in the cavity of the outer tube 21, and a second telescopic inner tube 23 sleeved from top to bottom in the cavity of the first telescopic inner tube 22. A spray head group 24 vertically aligned with the water collecting mechanism 4 is transversely arranged on the upper end of the second telescopic inner tube 23. A first motor 25 is meshed on the first telescopic inner tube 22, and a second motor 26 is meshed on the second telescopic inner tube 23. A first meshing opening 211 is opened at the upper end of the front side surface of the outer tube 21, a first rack 221 is vertically arranged on the front side surface of the first telescopic inner tube 22, and a first motor 25 is provided on the first motor 25 to mesh with the first rack 221. A first gear, a second meshing opening 222 is provided at the upper end of the front side surface of the first telescopic inner tube 22, a second rack 231 is vertically arranged on the front side surface of the second telescopic inner tube 23, and a second gear meshing with the second rack 231 is arranged on the second motor 26. The spray head group 24 includes a horizontal frame 241, a rotating frame 242 movably connected to the right end of the horizontal frame 241, and the two are locked at a fixed angle by a locking member 243, a spray head body 244 is connected to the right end of the rotating frame 242, and a water collecting bracket 245 and a water collecting basin 246 are aligned below the spray head body 244, and a second drain pipe 247 is connected to the bottom of the water collecting basin 246.

[0021] The spray pump group 3 includes a water pump 31, and the water inlet end of the water pump 31 is connected to a valve group 32, and the water outlet end of the water pump 31 is connected to a four-way switching valve 33, the lower valve port of the four-way switching valve 33 is connected to an air pump 34 through an air intake hose, the left valve port of the four-way switching valve 33 is connected to a spray head body 244 through a hose, and the right valve port of the four-way switching valve 33 is movably connected to a water inlet hole 82 through a hose, the valve group 32 includes a valve tube 321, and a first three-way valve 322 and a second three-way valve 323 are connected to the valve tube 321, and the lower valve port of the first three-way valve 322 is connected to an external water tank through a hose.

[0022] The water collecting mechanism 4 comprises a fixed seat 41, a telescopic device 42 disposed transversely on the fixed seat 41, and a buffer component 43 disposed on the right side of the telescopic device 42. A water collecting tank group 44 is disposed on the right side of the buffer component 43. A plurality of supporting slide bars 45 are disposed transversely on the left side of the buffer component 43, and the other end of each supporting slide bar 45 passes through the fixed seat 41. The buffer component 43 comprises a fixed plate 431 and a movable plate 432. A plurality of slide bars 433 are movably sleeved between the fixed plate 431 and the movable plate 432, and a spring 434 is sleeved on the rod body of each slide bar 433. A plurality of slide bars for sliding are embedded at intervals on the fixed plate 431. 433 sliding sleeve 435, the water collecting tank group 44 includes a water collecting tank body 441, a water inlet port 442 opened on the top surface of the water collecting tank body 441, and an elastic pressure pad 443 is attached to the right side of the water collecting tank body 441, and the upper end of the elastic pressure pad 443 is provided with an oblique cut 444 communicated with the water inlet port 442, the bottom surface of the water collecting tank body 441 is connected with a first drain pipe 445, the upper end of the right side surface of the oblique cut 444 is provided with a protrusion 446, the other end of the first drain pipe 445 is connected to the second three-way valve 323 through a hose, and the water outlet hole 83 is movably extended to the cavity of the water collecting tank body 441 through a pipeline.

[0023] Here’s how: S1: First, before curing, the temperature difference between the surface and the interior of the concrete 8 must be tested. The temperature difference is measured by electrically connecting the first sensor 84 and the second sensor 85 through the temperature sensor 6. It should be noted that spray curing requires cooling and spraying the parts with higher temperatures first, so as to reduce the temperature difference between the surface and the interior of the concrete, which can prevent cracking; S2: For the internal maintenance of concrete, first push the equipment to the water inlet 82 and the water outlet 83, then connect the water inlet 82 through a hose at the right end of the four-way switching valve 33, and put the other end of a pipe connected to the water outlet 83 into the water collection tank body 441, and connect a hose at the lower end of the first three-way valve 322 to the external water tank to complete the installation. Before use, it is necessary to adjust the flow direction of the four-way switching valve 33. The adjusted four-way switching valve 33 is disconnected from the spray mechanism 2 and the air pump 34, and then the water pump 31 draws water from the external water tank and pours it into the water inlet 82 through the pipe, so that the water circulates in the waterway inside the concrete 8. 81, during this process, the concrete 8 will absorb water from the inside for solidification and curing, and the excess water will be discharged from the water outlet 83 through a pipe into the water collecting tank body 441, at this time, the water pump 31 will extract the water in the external water tank and the water collecting tank body 441 for circulation and curing. It should be noted that when the water collecting tank body 441 collects enough water, the first three-way valve 322 needs to be temporarily closed, so that the water pump 31 only extracts the water in the water collecting tank body 441 for circulation and curing. When part of the water is absorbed by the concrete 8 during the water circulation process and the water level in the water collecting tank body 441 drops, the first three-way valve 322 is opened again to replenish the circulating water; S3: After the concrete 8 is cured, the circulating water channel 81 needs to be drained. First, the water pump 31 is turned off, and then the four-way switching valve 33 is switched to the air pump 34 to connect with the water inlet hole 82, while the water pump 31 and the spray mechanism 2 are disconnected. At this time, the air pump 34 is turned on to inject pressurized air into the circulating water channel 81 to drain the water, and the water flows into the water collecting tank body 441 to be collected; S4: For the maintenance of the concrete surface, first move the mobile vehicle 1 to the side of the concrete 8, then extend the telescopic device 42 through the buffer assembly 43 to make the water collecting tank group 44 softly cushion against the lower surface of the concrete 8, then the first motor 25 and the second motor 26 are engaged and driven to make the first telescopic inner tube 22 and the second telescopic inner tube 23 rise, and move the spray head body 244 vertically upward to the upper end surface of the concrete 8 to complete the installation, and then switch the four-way switching valve 33 to open the spray mechanism 2, and the water inlet hole 82 and the air pump 34 are disconnected, and then the water pump 31 is pumped. Water is sprayed from the sprinkler head body 244 to cure the upper surface of the concrete 8. During this process, the water will flow vertically downward along the wall. At this time, under the action of the oblique cut 444, most of the water will flow into the water collecting tank body 441 and be collected. Only a small amount of water will slowly penetrate from the abutting protrusion 446 to the lower surface of the concrete 8 at the level of the water collecting tank body 441. The water collected by the water collecting tank body 441 will be extracted again for recycling. After completing the curing of one vertical concrete 8 wall, the equipment is moved to perform the curing of another vertical concrete 8 wall. S5: When the top wall of the concrete 8 is to be maintained, it is only necessary to adjust the direction of the sprinkler head body 244 upwards. When spraying, water will spray the top wall of the concrete 8, and excess water will directly fall down into the water collection basin 246 to be collected, and then discharged into the water collection tank body 441 through the pipe connected to the second drain pipe 247 for water circulation.

[0024] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A large-volume concrete temperature control and crack prevention temperature control and curing device, the structure of which comprises concrete (8), wherein a circulating water channel (81) is provided inside the concrete (8), and a water inlet hole (82) and a water outlet hole (83) are provided at the upper and lower ends of the circulating water channel (81), respectively, a first sensor (84) is built inside the concrete (8), a second sensor (85) is attached to the surface of the concrete (8), and a water supply spraying device for curing the concrete (8) is also included, characterized in that: The water supply spraying device comprises a mobile vehicle (1), a spraying mechanism (2) vertically arranged on the mobile vehicle (1), and a spraying pump group (3) arranged in the middle of the mobile vehicle (1); a water collecting mechanism (4) is horizontally arranged on the right side of the mobile vehicle (1); a power supply (5), a temperature detector (6) and an operating table (7) are arranged on the left side of the mobile vehicle (1); the spraying mechanism (2), the water collecting mechanism (4) and the spraying pump group (3) are interconnected through a pipeline; the spraying mechanism (2), the spraying pump group (3), the water collecting mechanism (4), the power supply (5), the temperature detector (6) and the operating table (7) are electrically connected; the first sensor (84) and the second sensor (85) are movably electrically connected to the temperature detector (6); the water outlet (83) is movably extended into the cavity of the water collecting mechanism (4) through a pipeline; and a water outlet end on the spraying pump group (3) is movably connected to the water inlet (82) through a pipeline; The spray mechanism (2) comprises an outer tube (21), a first telescopic inner tube (22) sleeved from top to bottom in the cavity of the outer tube (21), and a second telescopic inner tube (23) sleeved from top to bottom in the cavity of the first telescopic inner tube (22), a spray head group (24) vertically aligned with the water collecting mechanism (4) being transversely arranged at the upper end of the second telescopic inner tube (23), a first motor (25) being meshed with the first telescopic inner tube (22), and a second motor (26) being meshed with the second telescopic inner tube (23); The water collecting mechanism (4) comprises a fixed seat (41), a telescopic device (42) disposed transversely on the fixed seat (41), and a buffer assembly (43) disposed on the right side of the telescopic device (42); a water collecting tank group (44) is disposed on the right side of the buffer assembly (43); and a plurality of supporting slide bars (45) are disposed transversely on the left side of the buffer assembly (43), and the other end of each supporting slide bar (45) passes through the fixed seat (41).

2. A temperature control and crack prevention and temperature control and curing device for large volume concrete according to claim 1, characterized in that: The top surface of the mobile vehicle (1) is provided with a water pump installation groove (11), the left side of the mobile vehicle (1) is provided with a water pump installation chamber (12), and the right side of the mobile vehicle (1) is provided with a water collection mechanism activity chamber (13). The water pump installation groove (11) and the water pump installation chamber (12) are connected via a first pipe opening (14), the water pump installation chamber (12) and the water collection mechanism activity chamber (13) are connected via a second pipe opening (15), the right side of the water collection mechanism activity chamber (13) is provided with an activity opening (16), and a hand push frame (17) is provided on the left side of the top surface of the mobile vehicle (1).

3. A temperature control and crack prevention and temperature control and curing device for large volume concrete according to claim 2, characterized in that: A first meshing opening (211) is provided at the upper end of the front side surface of the outer tube (21), a first rack (221) is vertically arranged on the front side surface of the first telescopic inner tube (22), a first gear meshing with the first rack (221) is provided on the first motor (25), a second meshing opening (222) is provided at the upper end of the front side surface of the first telescopic inner tube (22), a second rack (231) is vertically arranged on the front side surface of the second telescopic inner tube (23), and a second gear meshing with the second rack (231) is provided on the second motor (26).

4. A temperature control and crack prevention and temperature control and curing device for large volume concrete according to claim 3, characterized in that: The spray head group (24) comprises a horizontal frame (241), a rotating frame (242) movably connected to the right end of the horizontal frame (241), and the two are locked at a fixed angle by a locking member (243); the right end of the rotating frame (242) is connected to a spray head body (244); a water collecting bracket (245) and a water collecting basin (246) are arranged in alignment below the spray head body (244); and the bottom surface of the water collecting basin (246) is connected to a second drain pipe (247).

5. A temperature control and crack prevention and temperature control and curing device for large volume concrete according to claim 4, characterized in that: The spray pump group (3) comprises a water pump (31), and the water inlet end of the water pump (31) is connected to a valve group (32), and the water outlet end of the water pump (31) is connected to a four-way switching valve (33), the lower valve port of the four-way switching valve (33) is connected to an air pump (34) via an air intake hose, the left valve port of the four-way switching valve (33) is connected to a spray head body (244) via a hose, and the right valve port of the four-way switching valve (33) is movably connected to a water inlet hole (82) via a hose.

6. A temperature control and crack prevention and temperature control and curing device for large volume concrete according to claim 5, characterized in that: The valve group (32) comprises a valve tube (321), and a first three-way valve (322) and a second three-way valve (323) are connected to the body of the valve tube (321), and the lower valve port of the first three-way valve (322) is connected to an external water tank via a hose.

7. A temperature control and crack prevention and temperature control and curing device for large volume concrete according to claim 6, characterized in that: The buffer assembly (43) comprises a fixed plate (431) and a movable plate (432), a plurality of sliding rods (433) being movably sleeved between the fixed plate (431) and the movable plate (432), a spring (434) being sleeved on the rod body of each sliding rod (433), and a plurality of sleeves (435) for sliding the sliding rods (433) being embedded at intervals on the fixed plate (431).

8. A temperature control and crack prevention and temperature control and curing device for large volume concrete according to claim 7, characterized in that: The water collecting tank group (44) comprises a water collecting tank body (441), a water inlet (442) opened on the top surface of the water collecting tank body (441), and an elastic pressure pad (443) is attached to the right side surface of the water collecting tank body (441), and an oblique cut (444) communicating with the water inlet (442) is opened at the upper end of the elastic pressure pad (443). A first drain pipe (445) is connected to the bottom surface of the water collecting tank body (441), and a stop block (446) is arranged at the upper end of the right side surface of the oblique cut (444). The other end of the first drain pipe (445) is connected to the second three-way valve (323) through a hose, and the water outlet (83) is movably extended to the cavity of the water collecting tank body (441) through a pipeline.

9. A method for using a large volume concrete temperature control and crack prevention temperature control and curing device according to any one of claims 1 to 8, characterized in that: Here’s how: S1: First, before maintenance, the temperature difference between the surface and the interior of the concrete (8) must be tested, and the temperature difference is measured by electrically connecting the first sensor (84) and the second sensor (85) through the temperature measuring device (6); S2: then perform internal curing on the concrete (8); S3: After the interior of the concrete (8) is cured, the circulating waterway (81) needs to be drained; S4: then curing the surface of the concrete (8); S5: Finally, when the top wall of the concrete (8) is to be cured, it is only necessary to adjust the direction of the sprinkler head body (244) upward.

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