Method for reducing temperature stress in concrete hardening process

Abstract

The invention relates to the technical field of concrete temperature stress, in particular to a method for reducing temperature stress in the concrete hardening process, which comprises the following steps: the inner wall of a discharge port is in contact with a blocking rod, and the bottom end of the blocking rod is fixedly provided with an air pressure rod; through cooperation of a gas collection cylinder, a piston plate, a stirring rod, a gas control pipe, a gas blocking rod II, a gas blocking rod I and a gas storage pipe, after the temperature of air in the stirring cylinder is changed, a gas collecting hole continuously sucks gas above cement, and the gas blocking rod I and the gas blocking rod II are adjusted to move according to the temperature of the air, so that the stirring effect is improved; then the air in the air control pipe is adjusted relative to opening of an airflow cooling mechanism or an airflow heating mechanism, finally the adjusted air is discharged to the position above the cement to reduce the concrete hardening effect, the temperature difference of the concrete does not need to be manually monitored, and meanwhile it is not needed to manually use purified water to neutralize the temperature of the concrete to reduce temperature stress; the cost of an enterprise is reduced, and meanwhile, the functionality of the device is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete temperature stress, and in particular to a method for reducing temperature stress in a concrete hardening process. Background Art

[0002] Concrete is generally produced in an outdoor environment. Therefore, factors such as outdoor uncontrollable temperature, humidity and air flow will cause hydration reaction and other chemical reactions during the hardening process of concrete. When these chemical reactions affect the concrete transportation to the layered pouring equipment, temperature stress is generated in the concrete. Temperature stress will cause the volume of concrete to change. When the temperature rises, the concrete will expand, and when the temperature drops, the concrete will shrink. If this volume change is constrained by a fixed container, stress will be generated;

[0003] For large concrete structures, concrete with temperature stress may cause overall displacement of the structure. For example, in the concrete core of a high-rise building, temperature changes may cause differential deformation between the core and the surrounding frame structure, resulting in displacement of the structure.

[0004] Concrete with temperature stress will produce certain cracks during the hardening process, and the generation of cracks will reduce the effective stress-bearing area of ​​concrete, thereby reducing the strength of concrete. In addition, temperature stress may also damage the microstructure inside the concrete, affecting the hydration reaction of cement and the strength development of concrete. For example, under the action of temperature stress, micro cracks in concrete may continue to expand, causing the strength of concrete to gradually decrease;

[0005] At present, in order to reduce the temperature stress of concrete during the hardening process, cooling water or hot water is generally injected into the concrete in the storage tank to keep the concrete in a constant temperature state and avoid the temperature stress phenomenon during the pouring and hardening process. However, such measures require manual monitoring of the temperature in the storage tank and injection of water to neutralize the temperature in the storage tank. If the manual monitoring is not timely or the neutralization temperature is inaccurate, it will lead to the maximum reduction of temperature stress. Therefore, the present invention provides a method for reducing temperature stress in the hardening process of concrete. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that the temperature stress value needs to be artificially reduced during concrete hardening.

[0007] In order to achieve the above object, the present invention adopts the following technical solution: a method for reducing temperature stress during concrete hardening, comprising the following steps:

[0008] S1. Collecting gas: After the mixing drum is filled with cement and gas materials, when it is necessary to start rotating and mixing concrete, the concrete is mixed by a rotatable mixing rod provided on the inner wall of the mixing drum. During the rotation of the mixing rod, the rotating gas collecting mechanism provided on the outer wall of the mixing rod continuously collects air in the mixing drum;

[0009] S2. Adjusting the temperature: If the air in the rotating air collecting mechanism is high-temperature air, the rotating air collecting mechanism is connected to the temperature sensing mechanism, and the high-temperature air causes the temperature sensing mechanism to open the airflow cooling mechanism to cool the air and transport the cooled air to the air above the concrete. On the contrary, the low-temperature air causes the temperature sensing mechanism to open the airflow heating mechanism and heat the air and transport it to the air above the concrete.

[0010] S3, forming and unloading: open the discharge port below the mixing drum and finally collect the mixed concrete;

[0011] The above-mentioned method for reducing temperature stress during concrete hardening requires the working procedures in steps S1 to S3 to be completed by the cooperation of a mixing drum, a mixing rod, a discharge port, a rotating air collecting mechanism, a temperature sensing mechanism, an air flow cooling mechanism and an air flow heating mechanism to complete the corresponding processing operations, wherein: one end of the mixing rod passes through and is rotatably connected to the mixing drum, the inner wall of the mixing drum is provided with a rotating air collecting mechanism, a temperature sensing mechanism, an air flow cooling mechanism and an air flow heating mechanism, the rotating air collecting mechanism is interconnected with the temperature sensing mechanism, the temperature sensing mechanism is interconnected with the air flow cooling mechanism and the air flow heating mechanism, a conical block is fixedly installed at the bottom end of the mixing drum, and a discharge port is opened at the end with the smallest inner radius of the conical block.

[0012] As a preferred embodiment, the inner wall of the discharge port contacts with a blocking rod, a gas pressure rod is fixedly installed at the bottom end of the blocking rod, a support pad is fixedly installed at the bottom end of the gas pressure rod, a plurality of supporting feet are fixedly installed in a circular array at the bottom end of the mixing drum, and the outer wall of the mixing drum is connected to a feed pipe.

[0013] As a preferred embodiment, the rotating air collecting mechanism includes an air collecting cylinder fixedly installed on the inner wall of the mixing drum, the air collecting cylinder is provided with an inner ring and a cavity, an air outlet hole is opened at the centrifugal position of the top of the air collecting cylinder, and an air receiving hole is opened at the centrifugal position of the bottom of the air collecting cylinder, the air receiving hole and the air outlet hole are not in the same plane, the inner wall of the cavity is sealingly and slidably connected with two piston plates, one side of the piston plate is fixedly installed with a magnet 2, the bottom end of the air outlet is connected to a gas collecting ring, and the bottom circular array of the air collecting ring is provided with multiple air holes.

[0014] As a preferred embodiment, two magnets 1 are fixedly mounted on the outer wall of the rod body of the stirring rod located in the inner circle, the magnet 1 is magnetically connected to the magnet 2, and the two piston plates are in the same plane.

[0015] As a preferred embodiment, the temperature sensing mechanism includes an air control pipe connected to the top of the air receiving hole, the air control pipe is composed of a transverse rod and a longitudinal rod, the inner wall of the longitudinal rod is fixedly installed with a support plate, the bottom of the support plate is fixedly installed with a spring three, the bottom end of the spring three is fixedly installed with a conical rod, the outer wall of the conical rod is in air-tight contact with an air blocking cylinder, and the outer wall of the air blocking cylinder is fixedly installed on the inner wall of the longitudinal rod.

[0016] As a preferred embodiment, an air storage pipe is fixedly installed on the inner wall of the mixing drum, and the air storage pipe consists of a transverse section one, a transverse section two and a longitudinal section. One end of the transverse section one is connected to the top of the longitudinal section, and the outer wall of the longitudinal section is connected to one end of the transverse section two. The transverse section one is in opposite directions to the transverse section two and the horizontal height of the transverse section one is higher than that of the transverse section two. A hemisphere is airtightly rotated on the inner wall of the transverse section one, and an optical axis is fixedly installed on one side of the hemisphere, and one end of the optical axis passes through and is rotatably connected to one end of the transverse section one.

[0017] As a preferred embodiment, the inner walls of the transverse section 2 and the longitudinal section are both air-tightly slidably connected with pistons, and the side of the piston away from the air storage pipe is fixedly installed with air-blocking rod 1 and air-blocking rod 2, and one end of the air-blocking rod 1 and air-blocking rod 2 is air-tightly slidably inserted into the outer walls of the transverse rod and the longitudinal rod, and the air-blocking rod 1 and air-blocking rod 2 are both provided with air holes, and the air hole is opened on the outer wall of the air-blocking rod 1 near the top, and the other air hole is opened on the outer wall of the air-blocking rod 2 near the bottom.

[0018] As a preferred embodiment, the airflow cooling mechanism includes an annular tube 1 connected to one end of a transverse rod, an annular tube 2 is fixedly installed on the outer wall of the annular tube 1, the inner wall of the annular tube 2 is filled with cooling kerosene, the outer walls of the annular tube 1 and the annular tube 2 are fixedly installed on the inner wall of the mixing drum, the outer wall of the annular tube 1 away from the transverse rod is connected to an air outlet groove, and the air outlet groove is opened on the inner wall of the mixing drum.

[0019] As a preferred embodiment, an exhaust component 1 is fixedly installed at the other end of the air outlet groove, and the exhaust component 1 is composed of a fixed tube, a hollow ring 1, a hollow ring 2, a spring 1, a bellows, an air outlet groove and a blocking plate. The inner wall of the fixed tube is fixedly installed on the outer walls of the hollow ring 2 and the hollow ring 1, the side of the hollow ring 1 close to the fixed tube is fixedly installed on one end of the spring 1, the other end of the spring 1 is fixedly installed on one side of the blocking plate, the side of the blocking plate close to the spring 1 is fixedly installed on one side of the bellows, a plurality of air outlet grooves are opened on the outer wall of the bellows, and the other side of the bellows is fixedly installed on one side of the hollow ring 2.

[0020] As a preferred embodiment, the airflow heating mechanism includes a circular plate one connected to the top end of the longitudinal rod, the top end of the circular plate one is fixedly installed with a vortex line one, the top of the circular plate one is in air-tight contact with a vortex line two, the top of the vortex line two is fixedly installed with a circular plate two, the outer ring openings of the vortex line one and the vortex line two are provided with an air outlet pipe, the air outlet pipe is fixedly installed on the top of the circular plate one, the other end of the air outlet pipe is fixedly installed with an exhaust component two, the outer wall of the air outlet pipe is fixedly installed on the inner wall of the mixing drum, the inner wall of the mixing drum is fixedly installed with a telescopic rod, the inner wall of the telescopic rod is fixedly installed with a spring two, the other end of the telescopic rod is fixedly installed on the outer wall of the circular plate two, the outer wall of the circular plate two away from the telescopic rod is in contact with a ball head rod, the other end of the ball head rod is fixedly installed on the outer wall of the stirring rod, the horizontal height of the ball head rod is higher than the piston plate, a plurality of stirring plates are fixedly installed on the outer wall of the stirring rod, the horizontal height of the piston plate is higher than the stirring plate, and the horizontal height of the ball head rod is located between the air collecting ring and the stirring plate.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are:

[0022] 1. The present invention cooperates with the gas collecting cylinder, the piston plate, the second magnet, the first magnet, the stirring rod, the air control pipe, the second air blocking rod, the first air blocking rod and the air storage pipe to make the air in the mixing drum change in temperature. The air receiving hole will continue to suck air above the cement, and adjust the movement of the first air blocking rod and the second air blocking rod according to the temperature of the air. Then, the air in the air control pipe is adjusted relative to the opening of the air flow cooling mechanism or the air flow heating mechanism. Finally, the adjusted air is discharged to the top of the cement to reduce the hardening effect of the concrete. There is no need to manually monitor the temperature difference of the concrete, and there is no need to manually use pure water to neutralize the temperature of the concrete to reduce temperature stress, thereby reducing the cost of the enterprise and improving the functionality of the device.

[0023] 2. The present invention can adjust the temperature of the device when it encounters cold air or hot air through the coordination between the annular tube 1, the annular tube 2, the vortex line 1, the vortex line 2, the telescopic rod, the spring 2 and the ball head rod. When encountering hot air, the heat absorption time of the cooling kerosene is increased by the length of the annular tube 1 and the annular tube 2 to achieve a cooling effect. At the same time, when encountering cold air, the air is continuously compressed by the vortex line 1 and the vortex line 2, and the air compression principle is used to compress the cold air into hot air, thereby finally achieving the maximum neutralization of the temperature difference of the concrete and minimizing the temperature stress, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention:

[0026] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the present invention:

[0027] Figure 3 This is a schematic diagram of the split three-dimensional structure of the present invention:

[0028] Figure 4 This is a schematic diagram of a disassembled three-dimensional structure of the exhaust member of the present invention:

[0029] Figure 5 This is a schematic diagram of the split three-dimensional structure of the gas blocking cylinder of the present invention:

[0030] Figure 6 This is a schematic diagram of the internal three-dimensional structure of the gas collecting cylinder of the present invention:

[0031] Figure 7 This is a schematic diagram of the internal three-dimensional structure of the air control tube of the present invention:

[0032] Figure 8 It is a plan view of the gas collecting cylinder of the present invention;

[0033] Fig. 9 It is a schematic diagram of a three-dimensional structure of a circular plate of the present invention;

[0034] Fig.10 It is a schematic diagram of the three-dimensional structure of the circular plate of the present invention;

[0035] Fig.11 This is the air compression flow diagram of the present invention.

[0036] Figure numerals: 1, mixing drum; 10, feeding pipe; 11, stirring rod; 12, conical block; 13, supporting foot; 14, discharge port; 15, blocking rod; 16, air pressure rod; 17, supporting pad; 18, stirring plate; 19, ball head rod; 2, gas collecting cylinder; 20, air receiving hole; 21, air outlet; 22, gas collecting ring; 23, air control pipe; 24, air storage pipe; 25, hemisphere; 26, optical axis; 27, air blocking rod 1; 28, air blocking rod 2; 29, piston; 3, annular tube 1; 30, annular tube 2; 31 , air outlet groove; 32, exhaust part one; 320, exhaust part two; 33, fixed pipe; 34, hollow ring one; 35, hollow ring two; 36, spring one; 37, bellows; 38, air outlet groove; 39, blocking plate; 4, circular plate one; 40, vortex line one; 41, vortex line two; 42, circular plate two; 43, telescopic rod; 44, spring two; 45, air outlet pipe; 46, magnet one; 47, magnet two; 48, piston plate; 50, support plate; 51, spring three; 52, tapered rod; 53, air plugging cylinder. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The present invention will be further described below in conjunction with the embodiments.

[0039] Example: Refer to Figures 1 to 3 The present invention provides a technical solution: a method for reducing temperature stress during concrete hardening, comprising the following steps:

[0040] S1. Collecting gas: After the mixing drum 1 is filled with cement and gas materials, when it is necessary to start rotating and mixing concrete, the mixing drum 1 is provided with a rotatable mixing rod 11 for mixing concrete. During the rotation of the mixing rod 11, the mixing rod 11 continuously collects air in the mixing drum 1 through a rotating gas collecting mechanism provided on the outer wall of the mixing rod 11;

[0041] S2. Adjusting the temperature: If the air in the rotating air collecting mechanism is high-temperature air, the rotating air collecting mechanism is connected to the temperature sensing mechanism, and the high-temperature air causes the temperature sensing mechanism to open the airflow cooling mechanism to cool the air and transport the cooled air to the air above the concrete. On the contrary, the low-temperature air causes the temperature sensing mechanism to open the airflow heating mechanism and heat the air and transport it to the air above the concrete.

[0042] S3, forming and unloading: opening the discharge port 14 below the mixing drum 1, and finally collecting the mixed concrete;

[0043] The above-mentioned method for reducing temperature stress during concrete hardening requires the mixing drum 1, the mixing rod 11, the discharge port 14, the rotating air collecting mechanism, the temperature sensing mechanism, the air flow cooling mechanism and the air flow heating mechanism to cooperate in the operation process in steps S1 to S3 to complete the corresponding processing operations, wherein: one end of the mixing rod 11 passes through and is rotatably connected with the mixing drum 1, the inner wall of the mixing drum 1 is provided with a rotating air collecting mechanism, a temperature sensing mechanism, an air flow cooling mechanism and an air flow heating mechanism, the rotating air collecting mechanism and the temperature sensing mechanism are interconnected, the temperature sensing mechanism and the air flow cooling mechanism and the air flow heating mechanism are interconnected, and a conical block 12 is fixedly installed at the bottom end of the mixing drum 1, and a discharge port 14 is opened at the end with the smallest radius inside the conical block 12.

[0044] like Figure 1 and Figure 2 As shown, the inner wall of the discharge port 14 contacts with a blocking rod 15, a gas pressure rod 16 is fixedly installed at the bottom end of the blocking rod 15, a support pad 17 is fixedly installed at the bottom end of the gas pressure rod 16, a plurality of support feet 13 are fixedly installed in a circular array at the bottom end of the mixing drum 1, and the outer wall of the mixing drum 1 is connected to a feed pipe 10.

[0045] When it is necessary to make concrete, the staff first injects cement and other materials into the mixing drum 1 from the feed pipe 10, and then connects the servo motor to the top of the mixing rod 11 to start it, that is, the mixing rod 11 drives multiple mixing plates 18 to mix and stir the cement and other materials. During the rotation of the mixing rod 11, the rotating gas collection mechanism is started to collect the gas collection ring 22 and the controlled gas above the cement, and then the hydrogen in the temperature sensing mechanism is induced to undergo a corresponding volume change according to the collected air temperature, and then the airflow cooling mechanism or the airflow heating mechanism is turned on, and the gas collected by the rotating gas collection mechanism is adjusted by the airflow cooling mechanism or the airflow heating mechanism, and finally discharged to the air above the cement to reduce the hardening state of the cement. When the mixing is completed, the staff only needs to flip the switch of the air pressure rod 16, and at the same time hold the outer wall of the blocking rod 15 and move downward, that is, the blocking rod 15 moves downward to separate from the inner wall of the discharge port 14. At the same time, when the inner wall of the discharge port 14 needs to be blocked, the staff only needs to flip the switch of the air pressure rod 16;

[0046] To explain, under normal pressure, if the temperature of hydrogen at room temperature rises from 10 degrees Celsius to 70 degrees Celsius, the volume of hydrogen will increase by more than 20%. On the contrary, if the temperature of hydrogen drops from room temperature to -30 degrees Celsius, the volume of hydrogen will decrease by more than 10%.

[0047] It is to be noted that the gas pressure rod 16 adopts the gas pressure rod used for lifting chairs on the market;

[0048] To explain, existing cooling measures are taken in the mixing tank, such as spraying water outside the tank to cool down, passing cooling water inside the tank, injecting cold air into the tank, etc., which can reduce the initial temperature of the concrete. In this way, in the subsequent hardening process, due to the lower starting temperature, the temperature rise inside the concrete will be reduced accordingly, thereby reducing temperature stress. The lower mold entry temperature can reduce the difference between the concrete and the ambient temperature, and reduce the thermal expansion and contraction effect caused by the temperature difference.

[0049] like Figure 2 , Figure 3 , Figures 6 to 8 As shown, the rotating air collecting mechanism includes an air collecting cylinder 2 fixedly installed on the inner wall of the mixing drum 1, the air collecting cylinder 2 is provided with an inner ring and a cavity, an air outlet hole 21 is opened at the centrifugal position of the top of the air collecting cylinder 2, and an air receiving hole 20 is opened at the centrifugal position of the bottom of the air collecting cylinder 2, the air receiving hole 20 and the air outlet hole 21 are not in the same plane, the inner wall of the cavity is sealed and slidably connected with two piston plates 48, one side of the piston plate 48 is fixedly installed with a magnet 2 47, the bottom end of the air outlet hole 21 is connected with an air collecting ring 22, and a plurality of air vents are opened in a circular array at the bottom of the air collecting ring 22, and two magnets 1 46 are fixedly installed on the outer wall of the rod body of the inner ring of the stirring rod 11, the magnet 1 46 is magnetically connected with the magnet 2 47, and the two piston plates 48 are in the same plane.

[0050] When the stirring rod 11 rotates, the magnet 1 46 and the magnet 2 47 are magnetically attracted to each other, so that the magnet 1 46 and the magnet 2 47 are in the same plane, and at the same time, the piston plate 48 is driven by the stirring rod 11 to rotate in the cavity of the gas collecting cylinder 2, as shown in the attached figure. Figure 8 As shown, when the two piston plates 48 are in the same plane, the air receiving hole 20 is located above the right piston plate 48, and the air outlet hole 21 is located below the left piston plate 48, that is, when the stirring rod 11 rotates counterclockwise and the right piston plate 48 passes through the air receiving hole 20, the right piston plate 48, the air receiving hole 20 and the left piston plate 48 rotate counterclockwise, so that the air from the direction of the right piston plate 48 to the left piston plate 48 is discharged to the air outlet hole 21, and at the same time, the space from the direction of the left piston plate 48 to the right piston plate 48 allows the air receiving hole 20 to absorb the air above the cement;

[0051] It is explained that the airflow cooling mechanism and the airflow heating mechanism cooperate with the spring 3 51, the tapered rod 52 and the air blocking cylinder 53 in the temperature sensing mechanism, so that the air in the air outlet 21 can only move into the temperature sensing mechanism, and the air in the temperature sensing mechanism cannot move from the reverse direction to the cavity of the air collecting cylinder 2, thereby forming a sealed and negative pressure state between the two piston plates 48 and the air outlet 21. When the negative pressure state is connected to the air receiving hole 20, in order to stabilize the pressure in the cavity, the air receiving hole 20 will automatically suck air above the cement until the cavity reaches a stable state.

[0052] Similarly, under constant temperature conditions, the temperature sensing mechanism will block both the airflow cooling mechanism and the airflow heating mechanism at the same time, so that there will be no gas loss in the space formed by the air outlet 21 and the two piston plates 48, and thus a negative pressure state cannot be reached. Therefore, the air collecting hole 20 will not collect air until the air temperature changes, and the space formed by the air outlet 21 and the two piston plates 48 will be in a negative pressure state.

[0053] like Figures 2 to 7 As shown, the temperature sensing mechanism includes an air control pipe 23 connected to the top of the air receiving hole 20, the air control pipe 23 is composed of a transverse rod and a longitudinal rod, the inner wall of the longitudinal rod is fixedly installed with a support plate 50, the bottom of the support plate 50 is fixedly installed with a spring three 51, the bottom end of the spring three 51 is fixedly installed with a tapered rod 52, the outer wall of the tapered rod 52 is in airtight contact with an air blocking cylinder 53, the outer wall of the air blocking cylinder 53 is fixedly installed on the inner wall of the longitudinal rod, the inner wall of the mixing drum 1 is fixedly installed with an air storage pipe 24, the air storage pipe 24 is composed of a transverse section one, a transverse section two and a longitudinal section, one end of the transverse section one is connected to the top of the longitudinal section, the outer wall of the longitudinal section is connected to one end of the transverse section two, the transverse section one and the transverse section two are in opposite directions and The horizontal height of the transverse section one is higher than that of the transverse section two. A hemisphere 25 is rotated airtightly on the inner wall of the transverse section one. An optical axis 26 is fixedly installed on one side of the hemisphere 25. One end of the optical axis 26 passes through and is rotatably connected to one end of the transverse section one. A piston 29 is airtightly slidably connected to the inner walls of the transverse section two and the longitudinal section. A gas blocking rod 1 27 and a gas blocking rod 28 are fixedly installed on the side of the piston 29 away from the gas storage pipe 24. One end of the gas blocking rod 1 27 and the gas blocking rod 28 are airtightly slidably inserted into the outer walls of the transverse rod and the longitudinal rod. Both the gas blocking rod 1 27 and the gas blocking rod 28 are provided with air holes. The air hole is opened on the outer wall of the gas blocking rod 1 27 near the top, and the other air hole is opened on the outer wall of the gas blocking rod 28 near the bottom.

[0054] When the temperature in the air control pipe 23 changes, the following two situations may occur:

[0055] First, if the air in the air control pipe 23 is high-temperature air, the hydrogen in the air storage pipe 24 will expand due to heat and increase in volume, that is, the two pistons 29 will move away from the air storage pipe 24. Since the air hole of the air blocking rod 28 is close to the bottom end, the air blocking rod 28 will continue to block one end of the air control pipe 23. Since the air hole of the air blocking rod 1 27 is close to the top end, the inner wall of the air control pipe 23 is connected with the annular pipe 1 3, thereby allowing air to enter the air flow cooling mechanism;

[0056] Second, if the air in the air control pipe 23 is cold air, in summary, the hydrogen gas is cooled and reduced in volume, and the gas blocking rod 28 moves toward the gas storage pipe 24, and at the same time, the air control pipe 23, the air holes of the gas blocking rod 28 and the circular plate 1 4 are connected, thereby allowing air to enter the airflow heating mechanism;

[0057] When the hydrogen in the gas storage pipe 24 is insufficient, the staff can manually rotate the optical axis 26 by ninety degrees to allow the hemisphere 25 to open the inner wall of the gas storage pipe 24, and then inject hydrogen into the inner wall of the gas storage pipe 24, and finally rotate the optical axis 26 in the opposite direction by ninety degrees to allow the hemisphere 25 to close the inner wall of the gas storage pipe 24.

[0058] like Figures 2 to 4 , Figure 6 and Figure 7 As shown, the airflow cooling mechanism includes an annular tube 1 3 connected to one end of the transverse rod, an annular tube 2 30 is fixedly installed on the outer wall of the annular tube 1 3, the inner wall of the annular tube 2 30 is filled with cooling kerosene, the outer walls of the annular tube 1 3 and the annular tube 2 30 are fixedly installed on the inner wall of the mixing drum 1, the outer wall of the annular tube 1 3 away from the transverse rod is connected to an air outlet groove 31, the air outlet groove 31 is opened on the inner wall of the mixing drum 1, and the other end of the air outlet groove 31 is fixedly installed with an exhaust member 1 32, and the exhaust member 1 32 is composed of a fixed pipe 33, a hollow ring 1 34, a hollow ring 2 35, a spring 1 The bellows 37 is composed of an air outlet groove 38 and a blocking plate 39. The inner wall of the fixed tube 33 is fixedly mounted on the outer walls of the hollow ring 2 35 and the hollow ring 1 34. The side of the hollow ring 1 34 close to the fixed tube 33 is fixedly mounted on one end of the spring 1 36. The other end of the spring 1 36 is fixedly mounted on one side of the blocking plate 39. The side of the blocking plate 39 close to the spring 1 36 is fixedly mounted on one side of the bellows 37. A plurality of air outlet grooves 38 are opened on the outer wall of the bellows 37. The other side of the bellows 37 is fixedly mounted on one side of the hollow ring 2 35.

[0059] When high-temperature air enters the annular tube 2 30 from the air control pipe 23, the cooling kerosene in the annular tube 2 30 absorbs the heat of the high-temperature air, allowing the high-temperature air to dissipate heat and become cold air. Finally, as air is injected into the gas collecting cylinder 2, the air in the annular tube 1 3 is pushed to move into the air outlet groove 31 until the gas can squeeze the blocking plate 39 to move toward the circular part of the mixing drum 1. The cold air moves from the air outlet groove 38 into the mixing drum 1, and the air in the mixing drum 1 is cooled, thereby reducing the hardening effect of the concrete.

[0060] like Figure 3 , Figures 9 to 11As shown, the airflow heating mechanism includes a circular plate 14 connected to the top of the longitudinal rod, a vortex line 140 is fixedly installed on the top of the circular plate 14, a vortex line 241 is airtightly contacted with the top of the circular plate 14, a circular plate 242 is fixedly installed on the top of the vortex line 241, an air outlet pipe 45 is provided at the outer opening of the vortex line 140 and the vortex line 241, the air outlet pipe 45 is fixedly installed on the top of the circular plate 14, an exhaust member 2320 is fixedly installed on the other end of the air outlet pipe 45, and the outer wall of the air outlet pipe 45 is fixedly installed on the inner wall of the mixing drum 1, and the inner wall of the mixing drum 1 is fixedly installed. A telescopic rod 43 is installed, and a spring 2 44 is fixedly installed on the inner wall of the telescopic rod 43. The other end of the telescopic rod 43 is fixedly installed on the outer wall of the circular plate 2 42. The outer wall of the circular plate 2 42 away from the telescopic rod 43 contacts a ball head rod 19. The other end of the ball head rod 19 is fixedly installed on the outer wall of the stirring rod 11. The horizontal height of the ball head rod 19 is higher than the piston plate 48. A plurality of stirring plates 18 are fixedly installed on the outer wall of the stirring rod 11. The horizontal height of the piston plate 48 is higher than the stirring plate 18. The horizontal height of the ball head rod 19 is located between the air collecting ring 22 and the stirring plate 18.

[0061] When the cold air enters the circular part of the circular plate 4, the ball head rod 19 indirectly pushes the circular plate 42, and the telescopic rod 43 and the spring 44 on the outer wall of the circular plate 42 perform the reset work, so that the vortex line 41 and the vortex line 40 compress the cold air between them. When the cold air is compressed and moves toward the end of the outer circle of the vortex line 41 and the vortex line 40, when the cold air moves toward the inner wall of the outlet pipe 45, hot air will be formed due to continuous compression. The principle adopts the principle of heat generation by an air compressor until the hot air moves from the exhaust piece 320 to the inner wall of the mixing drum 1, thereby heating the air in the mixing drum 1 and reducing the hardening effect of the concrete. The exhaust piece 320 and the exhaust piece 32 have the same structure.

[0062] Working principle: when it is necessary to make concrete, the staff first injects cement and other materials into the mixing drum 1 from the feed pipe 10, and then connects the servo motor to the top of the mixing rod 11 to start it, that is, the mixing rod 11 drives multiple mixing plates 18 to mix and stir the cement and other materials. During the rotation of the mixing rod 11, the rotating gas collecting mechanism is started to collect the controlled air from the gas collecting ring 22 and the air above the cement, and then the hydrogen in the temperature sensing mechanism is induced to undergo a corresponding volume change according to the collected air temperature, and then the airflow cooling mechanism or the airflow heating mechanism is turned on, and the gas collected by the rotating gas collecting mechanism is adjusted by the airflow cooling mechanism or the airflow heating mechanism, and finally discharged to the air above the cement to reduce the hardening state of the cement. When the mixing is completed, the staff only needs to flip the switch of the air pressure rod 16, and at the same time hold the outer wall of the blocking rod 15 and move downward, that is, the blocking rod 15 moves downward to separate from the inner wall of the discharge port 14. At the same time, when the inner wall of the discharge port 14 needs to be blocked, the staff only needs to flip the switch of the air pressure rod 16.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for reducing temperature stress during concrete hardening, characterized in that: The method for reducing temperature stress during concrete hardening comprises the following steps: S1. Collecting gas: After the mixing drum (1) is filled with cement and gas materials, when it is necessary to start rotating and mixing concrete, the mixing drum (1) is provided with a rotatable mixing rod (11) to mix the concrete. During the rotation of the mixing rod (11), the mixing rod (11) continuously collects air from the mixing drum (1) through a rotating gas collecting mechanism provided on the outer wall of the mixing rod (11); S2. Adjusting the temperature: If the air in the rotating air collecting mechanism is high-temperature air, the rotating air collecting mechanism is connected to the temperature sensing mechanism, and the high-temperature air causes the temperature sensing mechanism to open the airflow cooling mechanism to cool the air and transport the cooled air to the air above the concrete. On the contrary, the low-temperature air causes the temperature sensing mechanism to open the airflow heating mechanism and heat the air and transport it to the air above the concrete. S3, forming and unloading: opening the discharge port (14) below the mixing drum (1) and finally collecting the mixed concrete; The above-mentioned method for reducing temperature stress during concrete hardening requires that the operation procedures in steps S1 to S3 be completed by the mixing drum (1), the mixing rod (11), the discharge port (14), the rotating air collection mechanism, the temperature sensing mechanism, the air flow cooling mechanism and the air flow heating mechanism in cooperation with each other to complete the corresponding processing operations, wherein: one end of the mixing rod (11) passes through and is rotatably connected to the mixing drum (1), the inner wall of the mixing drum (1) is provided with a rotating air collection mechanism, a temperature sensing mechanism, an air flow cooling mechanism and an air flow heating mechanism, the rotating air collection mechanism is interconnected with the temperature sensing mechanism, the temperature sensing mechanism is interconnected with the air flow cooling mechanism and the air flow heating mechanism, and the bottom end of the mixing drum (1) is fixedly mounted with a conical block (12), and the end with the smallest inner radius of the conical block (12) is provided with a discharge port (14).

2. The device for reducing temperature stress during concrete hardening according to claim 1, characterized in that: The inner wall of the discharge port (14) contacts a blocking rod (15), a gas pressure rod (16) is fixedly mounted on the bottom end of the blocking rod (15), a support pad (17) is fixedly mounted on the bottom end of the gas pressure rod (16), a plurality of support legs (13) are fixedly mounted in a circular array on the bottom end of the mixing drum (1), and the outer wall of the mixing drum (1) is connected to a feed pipe (10).

3. The device for reducing temperature stress during concrete hardening according to claim 1, characterized in that: The rotating air collecting mechanism comprises an air collecting cylinder (2) fixedly mounted on the inner wall of a mixing cylinder (1), the air collecting cylinder (2) being provided with an inner ring and a cavity, an air outlet hole (21) being provided at a centrifugal position on the top of the air collecting cylinder (2), and an air receiving hole (20) being provided at a centrifugal position on the bottom of the air collecting cylinder (2), the air receiving hole (20) and the air outlet hole (21) being not in the same plane, two piston plates (48) being sealingly and slidably connected to the inner wall of the cavity, a magnet 2 (47) being fixedly mounted on one side of the piston plate (48), the bottom end of the air outlet hole (21) being connected with an air collecting ring (22), and a plurality of air vents being provided in a circular array at the bottom of the air collecting ring (22).

4. The device for reducing temperature stress during concrete hardening according to claim 3, characterized in that: The outer wall of the inner ring of the stirring rod (11) is fixedly mounted with two magnets 1 (46), the magnet 1 (46) and the magnet 2 (47) are magnetically connected, and the two piston plates (48) are in the same plane.

5. The device for reducing temperature stress during concrete hardening according to claim 3, characterized in that: The temperature sensing mechanism comprises an air control pipe (23) connected to the top of the air receiving hole (20), the air control pipe (23) is composed of a transverse rod and a longitudinal rod, a support plate (50) is fixedly mounted on the inner wall of the longitudinal rod, a spring three (51) is fixedly mounted on the bottom of the support plate (50), a conical rod (52) is fixedly mounted on the bottom end of the spring three (51), the outer wall of the conical rod (52) is in airtight contact with an air blocking cylinder (53), and the outer wall of the air blocking cylinder (53) is fixedly mounted on the inner wall of the longitudinal rod.

6. The device for reducing temperature stress during concrete hardening according to claim 2, characterized in that: An air storage pipe (24) is fixedly mounted on the inner wall of the mixing drum (1), the air storage pipe (24) being composed of a transverse section 1, a transverse section 2 and a longitudinal section, one end of the transverse section 1 being connected to the top end of the longitudinal section, the outer wall of the longitudinal section being connected to one end of the transverse section 2, the transverse section 1 and the transverse section 2 being oriented in opposite directions and the horizontal height of the transverse section 1 being higher than that of the transverse section 2, a hemisphere (25) being airtightly rotatable on the inner wall of the transverse section 1, an optical axis (26) being fixedly mounted on one side of the hemisphere (25), one end of the optical axis (26) passing through and being rotatably connected to one end of the transverse section 1.

7. The device for reducing temperature stress during concrete hardening according to claim 6, characterized in that: The inner walls of the transverse section 2 and the longitudinal section are both air-tightly slidably connected with a piston (29), and a gas blocking rod 1 (27) and a gas blocking rod 2 (28) are fixedly installed on the side of the piston (29) away from the gas storage pipe (24), and one end of the gas blocking rod 1 (27) and the gas blocking rod 2 (28) are air-tightly slidably inserted into the outer walls of the transverse rod and the longitudinal rod, and the gas blocking rod 1 (27) and the gas blocking rod 2 (28) are both provided with ventilation holes, and the ventilation hole is provided on the outer wall of the gas blocking rod 1 (27) near the top end, and the other ventilation hole is provided on the outer wall of the gas blocking rod 2 (28) near the bottom end.

8. The device for reducing temperature stress during concrete hardening according to claim 7, characterized in that: The airflow cooling mechanism comprises an annular tube (3) connected to one end of a transverse rod, an annular tube (30) is fixedly mounted on the outer wall of the annular tube (3), the inner wall of the annular tube (30) is filled with cooling kerosene, the outer walls of the annular tube (3) and the annular tube (30) are fixedly mounted on the inner wall of the mixing drum (1), the outer wall of the annular tube (3) away from the transverse rod is connected to an air outlet groove (31), and the air outlet groove (31) is provided on the inner wall of the mixing drum (1).

9. The device for reducing temperature stress during concrete hardening according to claim 8, characterized in that: An exhaust member 1 (32) is fixedly mounted on the other end of the air outlet groove (31). The exhaust member 1 (32) is composed of a fixed tube (33), a hollow ring 1 (34), a hollow ring 2 (35), a spring 1 (36), a bellows (37), an air outlet groove (38) and a blocking plate (39). The inner wall of the fixed tube (33) is fixedly mounted on the outer walls of the hollow ring 2 (35) and the hollow ring 1 (34). The side of the hollow ring 1 (34) close to the fixed tube (33) is fixedly mounted on one end of the spring 1 (36). The other end of the spring 1 (36) is fixedly mounted on one side of the blocking plate (39). The side of the blocking plate (39) close to the spring 1 (36) is fixedly mounted on one side of the bellows (37). A plurality of air outlet grooves (38) are provided on the outer wall of the bellows (37). The other side of the bellows (37) is fixedly mounted on one side of the hollow ring 2 (35).

10. The device for reducing temperature stress during concrete hardening according to claim 7, characterized in that: The airflow heating mechanism comprises a circular plate (4) connected to the top end of the longitudinal rod, a vortex line (40) is fixedly mounted on the top end of the circular plate (4), a vortex line (41) is in airtight contact with the top of the circular plate (4), a circular plate (42) is fixedly mounted on the top of the vortex line (41), an air outlet pipe (45) is provided at the outer opening of the vortex line (40) and the vortex line (41), the air outlet pipe (45) is fixedly mounted on the top of the circular plate (4), an exhaust member (320) is fixedly mounted on the other end of the air outlet pipe (45), the outer wall of the air outlet pipe (45) is fixedly mounted on the inner wall of the mixing drum (1), and the inner wall of the mixing drum (1) is fixedly mounted A telescopic rod (43) is provided, and a spring 2 (44) is fixedly mounted on the inner wall of the telescopic rod (43). The other end of the telescopic rod (43) is fixedly mounted on the outer wall of a circular plate 2 (42). The outer wall of the circular plate 2 (42) away from the telescopic rod (43) contacts a ball head rod (19). The other end of the ball head rod (19) is fixedly mounted on the outer wall of a stirring rod (11). The horizontal height of the ball head rod (19) is higher than that of a piston plate (48). A plurality of stirring plates (18) are fixedly mounted on the outer wall of the stirring rod (11). The horizontal height of the piston plate (48) is higher than that of the stirring plate (18). The horizontal height of the ball head rod (19) is located between the air collecting ring (22) and the stirring plate (18).

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