Steam curing device for precast concrete component

Abstract

The invention relates to a concrete prefabricated part steam curing device, and relates to the technical field of concrete prefabricated part production. The device comprises a working box, a steam pipe and a mounting table, the steam pipe is arranged on the working box, a plurality of air outlet pipes are arranged at the top of the working box, the steam pipe communicates with a plurality of branch pipes, the branch pipes correspond to the air outlet pipes one to one, the branch pipes communicate with the air outlet pipes, and a rotating assembly is arranged on the working box, connected with the air outlet pipes and used for driving the air outlet pipes to swing. And the mounting table is positioned below the air outlet pipe. And steam is sprayed on the prefabricated part more uniformly and comprehensively, and the quality of curing the prefabricated part is improved.

Description

Technical Field

[0001] The present application relates to the field of prefabricated concrete product production, and in particular to a steam curing device for prefabricated concrete components. Background Art

[0002] Prefabricated concrete products are building components that are prefabricated in factories using concrete as the basic material, including beams, slabs, columns and building decoration accessories. In the actual production process of prefabricated concrete components, after the concrete is poured and vibrated, it is necessary to cure it for a period of time so that the concrete can gradually harden under the action of hydration. Currently, prefabricated concrete products need to be cured with steam after production.

[0003] In the related art, a Chinese patent with authorization announcement number CN215702676U discloses a steam curing device for concrete prefabricated product production, including a protective shell, a top frame fixedly installed on the top of the protective shell, an injection assembly penetrating the top of the top frame, a diverter pipe fixedly installed on the top of the injection assembly, a flow limiting assembly arranged on one side of the top of the diverter pipe, a connecting bolt fixedly installed on one side of the surface of the flow limiting assembly, and a pushing assembly arranged at the bottom of the protective shell. In daily use, the steam is first connected to the steam pipe through the connecting bolt, and then the connecting bolt transports the steam to the flow limiting pipe, and the flow limiting pipe is then dispersed into the diverter pipe through a valve and a sleeve. The diverter pipe transports the steam to the injection pipes on both sides of the protective shell and the top of the top frame respectively, and the injection pipe ejects the steam from the injection port, and at the same time, the diffusion head outside the injection port can diffuse the steam.

[0004] The positions and angles of the injection port and the diffusion port are fixed, so that the trajectory of the steam spraying is fixed, and thus it is impossible to perform uniform and comprehensive steam spraying on the prefabricated components at fixed positions on the placement table, which affects the quality of maintenance and needs to be improved. Summary of the invention

[0005] In order to improve the problem that the position of steam spraying is fixed and the prefabricated components cannot be evenly and comprehensively steam sprayed, the present application provides a steam curing device for prefabricated concrete components.

[0006] The present application provides a steam curing device for precast concrete components, which adopts the following technical solution: A steam curing device for precast concrete components comprises a working box, a steam pipe and a mounting platform, wherein the steam pipe is arranged on the working box, a plurality of air outlet pipes are arranged on the top of the working box, the steam pipe is connected to a plurality of branch pipes, the plurality of branch pipes correspond to the air outlet pipes one by one, and the branch pipes are connected to the air outlet pipes, a rotating assembly is arranged on the working box, the rotating assembly is connected to the air outlet pipe, and is used to drive the air outlet pipe to swing, and the mounting platform is located below the air outlet pipe.

[0007] By adopting the above technical solution, when in use, the prefabricated component is placed on the installation platform using a lifting tool, and then the steam enters the several branch pipes from the steam pipe, and then enters the corresponding air outlet pipes through the branch pipes, and is sprayed out from the air outlet pipes and falls to the installation platform below, so as to achieve the maintenance of the prefabricated component on the installation platform. In this process, the rotating component is started to drive the several air outlet pipes to rotate, so that the direction of the output end of the air outlet pipe changes, so as to achieve the steam spraying at different positions of the installation platform, so that the steam spraying is more uniform and comprehensive, and the quality of the maintenance of the prefabricated component is improved.

[0008] Optionally, the rotating assembly includes a rotating rack and a plurality of rotating gears, the rotating gears are rotatably connected to the air outlet pipe, the plurality of air outlet pipes are arranged along the length direction of the working box, the rotating rack is arranged along the length direction of the working box, and the rotating rack can move on the working box along the length direction of the working box, and the rotating rack is meshed with the rotating gears.

[0009] By adopting the above technical solution, when the steam is sprayed out through the air outlet pipe, the rotating rack is moved, and because the rotating gear is meshed with the rotating rack, a plurality of rotating gears are rotated at the same time, driving the air outlet pipe to rotate, so that the direction of the air outlet pipe changes, and the steam can be sprayed at different positions of the installation platform. By driving the rotating rack to move back and forth, the sprayed steam can fall to the installation platform below in an S shape, so as to achieve uniform steam coverage of the prefabricated components.

[0010] Optionally, the rotating rack includes two swing racks, the swing racks are meshed with the rotating gear, the two swing racks are symmetrically arranged with the central axis of the working box as the axis, the two swing racks are connected by a connecting assembly, the connecting assembly includes a cylinder and two connecting rods, a connecting plate is slidably connected to the working box, the connecting plate is located between the two swing racks, the working box is provided with an electric push rod, the electric push rod is connected to the connecting plate, and is used to drive the connecting plate to move along the length direction of the working box, the cylinder is arranged on the connecting plate, one end of the connecting rod is hinged on the swing rack, and the other end is hinged on the output end of the cylinder.

[0011] By adopting the above technical solution, the cylinder is started to drive one end of the two connecting rods to move simultaneously, that is, the height of one end of the connecting rod changes, while the swing rack connected to the other end of the connecting rod cannot move in the vertical direction, that is, the height of the other end of the connecting rod is fixed, so that the connecting rod moves in the horizontal direction toward or away from the connecting plate, so that the two swing racks are simultaneously close to or away from each other.

[0012] When the swing rack moves, it can drive the rotating gear to rotate. At this time, the moving directions of the two swing racks are opposite, so that the rotating gears on both sides of the connecting plate rotate in opposite directions, thereby driving the directions of the multiple air outlet pipes to gather toward the middle of the working box, or to spread away from the middle of the working box, thereby changing the steam spraying range, so as to strengthen the prefabricated components stacked in the middle of the installation platform, and also meet the requirements of steam maintenance for the prefabricated components located at the edge of the installation platform.

[0013] Start the electric push rod to drive the connecting plate to move. At this time, the cylinder is fixed, that is, the height of one end of the connecting rod is fixed, so that the other end of the connecting rod cannot move horizontally, so that the distance between the two swing racks remains unchanged. When the connecting plate moves, the two swing racks can move the same distance in the same direction, so that several rotating gears drive the air outlet pipes to rotate synchronously in one direction by the same angle, that is, the spraying range remains unchanged, but the spraying position changes, thereby realizing multi-angle and multi-directional steam spraying, which can adapt to different situations, makes the steam spraying more uniform and comprehensive, and improves the quality of maintenance of prefabricated components.

[0014] Optionally, a plurality of through holes are formed through the mounting platform, and side spray assemblies are provided on both sides of the working box. The side spray assemblies include a connecting pipe and an arc tube. The arc tube is provided on the working box, one end of the connecting pipe is connected to the steam pipe, and the other end is connected to the arc tube. The inner wall of the arc plate is aligned with the opening on the inner wall of the arc tube of the mounting platform.

[0015] By adopting the above technical solution, when the steam pipe passes the steam through the branch pipe, part of the steam enters the connecting pipe, finally reaches the arc tube, and is sprayed out through the holes on the inner wall of the arc tube, so as to realize the steam spraying on the side of the mounting platform. Because there are through holes on the mounting platform, the arc-shaped design of the arc tube makes part of the holes on the arc tube align with the bottom of the mounting platform, so that the steam sprays upward from the bottom of the mounting platform, and the steam passes through the through holes to realize the steam spraying on the bottom of the prefabricated components placed on the mounting platform, completing the comprehensive steam spraying of the prefabricated components and improving the quality of the maintenance of the prefabricated components.

[0016] Optionally, a moving gear is rotatably connected to the side wall of the working box, a transmission gear is fixed on the outer wall of the arc tube, the moving gear is meshed with the transmission gear, and the swing rack is connected to the moving gear through a linkage assembly. When the swing rack moves, it is used to drive the moving gear to rotate.

[0017] By adopting the above technical solution, when the swing rack moves, the linkage assembly drives the moving gear to rotate synchronously, and when the moving gear rotates, the transmission gear rotates, driving the arc tube to move, so that the position of the arc tube corresponding to the mounting platform changes, realizing multi-angle steam spraying on the oblique side of the mounting platform, and completing comprehensive steam maintenance of the prefabricated components.

[0018] Optionally, the linkage assembly includes a linkage rod and a linkage rack, one end of the linkage rod is fixed to the swing rack, and the other end is fixed to the linkage rack, and the linkage rack is meshed with the moving gear.

[0019] By adopting the above technical solution, when the swing rack moves, it drives the linkage rod to move, thereby driving the linkage rack to move synchronously. Since the linkage rack is meshed with the moving gear, it drives the moving gear to rotate. When the swing rack drives the rotating gear to rotate, the moving gear rotates synchronously, so that the air outlet pipe swings and the arc tube rotates synchronously at the same time, so that the top and surrounding sides of the prefabricated component are simultaneously sprayed with steam in all directions.

[0020] Optionally, the mounting platform is connected to the working box via a mounting assembly, the mounting assembly includes a mounting motor and a mounting frame, the mounting motor is disposed on the working box, the mounting frame is connected to an output end of the mounting motor, the mounting frame is horizontally mounted in the working box, and the mounting frame is rotatably connected to the working box, and the mounting platform is disposed on the mounting frame.

[0021] By adopting the above technical solution, the installation motor is started to drive the installation frame to rotate, so that the installation table is flipped, that is, the upper surface of the installation table is tilted, so as to load and unload the prefabricated components. At the same time, the installation table is flipped sideways, so that the prefabricated components on the installation table are tilted to align with the air outlet pipe and the arc pipe, so that steam can be sprayed at different angles of the prefabricated components, thereby achieving comprehensive coverage of the prefabricated components and improving the quality of steam curing of the prefabricated components.

[0022] Optionally, a rotating assembly is provided on the mounting frame, and the rotating assembly includes a rotating motor, a rotating bevel gear and a rotating bevel gear. The rotating motor is arranged on the mounting frame, and the output end of the rotating motor is coaxially fixed with the rotating bevel gear, and the rotating bevel gear is coaxially fixed with the mounting platform. The rotating bevel gear is rotatably connected to the mounting frame, and the rotating bevel gear is meshed with the rotating bevel gear.

[0023] By adopting the above technical solution, the rotating motor is started to drive the rotating bevel gear to rotate, thereby driving the rotating bevel gear to rotate, and then the mounting platform to rotate, so that a number of air outlet pipes above the prefabricated components swing to spray steam while the prefabricated components also rotate to receive steam, thereby improving the uniformity of contact between the prefabricated components and the steam and improving the quality of steam curing of the prefabricated components.

[0024] Optionally, a fence is provided on the mounting platform, and the fence is arranged along the circumference direction of the mounting platform.

[0025] By adopting the above technical solution, the fence plays a protective role, making it difficult for the prefabricated components to slide off the installation platform from the edge of the installation platform, thereby increasing the stability of the prefabricated components placed on the installation platform.

[0026] Optionally, one side of the working box is open, and a water box with an open top is provided in the working box, the water box is located below the mounting platform, and the water box can block the opening of the working box.

[0027] By adopting the above technical solution, when steam enters the working box and steam-cures the prefabricated components in the working box, the steam continues to fall. When the steam contacts objects such as the mounting table and the mounting rack, the steam accumulates on the objects, thereby liquefying to form liquid water, and then falls into the water storage box under the action of gravity for storage, thereby collecting water, avoiding waste of water resources, and preventing water from submerging the working box.

[0028] When the steam curing is completed, the water box is moved away from the working box until it is completely pulled out of the working box, thereby facilitating the cleaning of the water in the water box. At this time, one side of the working box is open, thereby facilitating the loading and unloading of prefabricated components on the installation table.

[0029] In summary, the present application includes at least one of the following beneficial effects: 1. When the steam is sprayed out through the outlet pipe, the rotating rack is moved. Since the rotating gear meshes with the rotating rack, several rotating gears rotate at the same time, driving the outlet pipe to rotate, so that the direction of the outlet pipe changes, and the steam can be sprayed on different positions of the installation platform. By driving the rotating rack to move back and forth, the sprayed steam can fall in an S shape to the installation platform below, achieving uniform steam coverage of the prefabricated components; 2. When the swing racks move closer to or farther away from each other, they can drive the rotating gears to rotate, so that the directions of several air outlet pipes gather toward the middle of the working box, or spread away from the middle of the working box, thereby changing the steam spraying range. When the connecting plate moves, the two swing racks can move the same distance in the same direction, so that several rotating gears drive the air outlet pipes to rotate synchronously in one direction by the same angle, that is, the spraying range remains unchanged, but the spraying position changes, thereby realizing multi-angle and multi-directional steam spraying, which can adapt to different situations, make the steam spraying more uniform and comprehensive, and improve the quality of maintenance of prefabricated components. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of a steam curing device for precast concrete components according to an embodiment of the present application; Figure 2 It is a schematic diagram of the structure inside the working box; Figure 3It is a schematic diagram of the structure of the installation component and the side spray component.

[0031] In the figure: 10, working box; 11, electric push rod; 12, moving gear; 20, steam pipe; 21, branch pipe; 22, exhaust pipe; 30, mounting table; 31, fence; 32, through hole; 40, mounting assembly; 41, mounting motor; 42, mounting frame; 50, rotating assembly; 51, rotating motor; 52, rotating bevel gear; 53, rotating bevel gear; 60, rotating assembly; 61, rotating rack; 611, swing rack; 62, rotating gear; 70, connecting assembly; 71, connecting plate; 72, cylinder; 73, connecting rod; 80, side spray assembly; 81, connecting pipe; 82, arc pipe; 821, transmission gear; 90, linkage assembly; 91, linkage rod; 92, linkage rack; 110, water box. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 This application is described in further detail.

[0033] The present application discloses a steam curing device for precast concrete components. Figure 1 and Figure 2 The steam curing device for precast concrete components includes a working box 10, a steam pipe 20, a mounting platform 30, a rotating assembly 60 and a side spray assembly 80, wherein the rotating assembly 60 is used to adjust the movement of the steam pipe 20 and its accessories, and the side spray assembly 80 is responsible for achieving effective dispersion and guidance of steam to achieve steam spraying at different positions of the mounting platform 30, so that the steam spraying is more uniform and comprehensive, thereby improving the quality of curing of precast components.

[0034] Reference Figure 2 and Figure 3 Specifically, the working box 10 serves as the main frame, and a plurality of parallel air outlet pipes 22 are arranged on the top thereof. Each air outlet pipe 22 is connected to the main steam pipe 20 by a corresponding branch pipe 21. The branch pipe 21 is a hose inserted in the air outlet pipe 22, so that when the air outlet pipe 22 rotates and bends, the branch pipe 21 remains in communication with the air outlet pipe 22. In order to increase the flexibility of the system, a rotating assembly 60 is provided to control the angle change of the air outlet pipe 22. The rotating assembly 60 includes a rotating rack 61 and a plurality of rotating gears 62. Each rotating gear 62 is installed at the end of the corresponding air outlet pipe 22. The rotating rack 61 is laid along the length direction of the working box 10 and can slide horizontally. When the rotating rack 61 moves, it meshes with each rotating gear 62 to produce relative motion, so that each air outlet pipe 22 swings according to a preset rule. Steam can be sprayed on different directions of the mounting platform 30. By driving the rotating rack 61 to move back and forth, the sprayed steam can be made to fall in an S-shape onto the mounting platform 30 below, thereby achieving uniform steam coverage of the prefabricated components.

[0035] Reference Figure 2 and Figure 3 In a further improvement, a double-track design is adopted, that is, two symmetrically arranged swing racks 611 replace the rotating rack 61. The two swing racks 611 are connected by a connecting assembly 70, and the connecting assembly 70 mainly includes a cylinder 72 and two connecting rods 73. A connecting plate 71 that can slide back and forth on the track is also configured inside the working box 10. The bottom edge of the connecting plate 71 is embedded in the swing rack 611, so that the swing rack 611 can only move in the horizontal direction. The cylinder 72 is fixed on this plate, and the end of its piston rod is connected to the swing racks 611 on both sides through a hinged connecting rod 73. In addition, an additional electric push rod 11 is added to push the entire connecting plate 71 to move, thereby indirectly prompting the swing racks 611 on both sides to operate synchronously.

[0036] When the swing rack 611 moves, it can drive the rotating gear 62 to rotate. At this time, the moving directions of the two swing racks 611 are opposite, so that the rotation directions of the rotating gears 62 on both sides of the connecting plate 71 are opposite, thereby driving the directions of the multiple air outlet pipes 22 to gather toward the middle of the working box 10, or to spread in the direction away from the middle of the working box 10, thereby changing the steam spraying range, so as to strengthen the prefabricated components stacked in the middle of the installation platform 30, and also meet the steam maintenance of the prefabricated components located at the edge of the installation platform 30.

[0037] Reference Figure 2 and Figure 3 , start the electric push rod 11 to drive the connecting plate 71 to move. At this time, the cylinder 72 is fixed, that is, one end of the connecting rod 73 is fixed in height, so that the other end of the connecting rod 73 cannot move horizontally, so that the distance between the two swing racks 611 remains unchanged. When the connecting plate 71 moves, the two swing racks 611 can move the same distance in the same direction, so that the several rotating gears 62 drive the air outlet pipes 22 to rotate synchronously in one direction by the same angle, that is, the spraying range remains unchanged, but the spraying position changes, so as to realize multi-angle and multi-directional spraying of steam, which can adapt to different situations, make the steam spraying more uniform and comprehensive, and improve the quality of maintenance of prefabricated components.

[0038] Reference Figure 2 and Figure 3The mounting platform 30 is provided with a plurality of through holes 32 for facilitating drainage and exhaust operations; at the same time, a fence 31 is installed around it to prevent the prefabricated components from sliding off the mounting platform 30. A side spray assembly 80 is provided near the side of the working box 10. The side spray assembly 80 includes a connecting pipe 81 and an arc tube 82. The arc tube 82 is arranged around the edge of the mounting platform 30, and its inner wall is provided with numerous fine holes to ensure that the steam can be evenly distributed on the surface of the prefabricated components. One end of the connecting pipe 81 is connected to the steam pipe 20, and the other end is connected to one end of the arc tube 82. The connecting pipe 81 is a rubber hose, so that the steam pipe 20 and the arc tube 82 can be connected when the arc tube 82 moves.

[0039] Reference Figure 2 and Figure 3 In order to make the arc-shaped pipeline have certain mobility, a moving gear 12 is rotatably connected to the side wall of the working box 10, and a transmission gear 821 is fixed on the outer wall of the arc tube 82. The moving gear 12 is meshed with the transmission gear 821. The swing rack 611 is connected to the moving gear 12 through a linkage assembly 90. The linkage assembly 90 includes a linkage rod 91 and a linkage rack 92. One end of the linkage rod 91 is fixed to the swing rack 611, and the other end is fixed to the linkage rack 92. The linkage rack 92 is meshed with the moving gear 12.

[0040] When the swing rack 611 moves, it drives the linkage rod 91 to move, thereby driving the linkage rack 92 to move synchronously. Since the linkage rack 92 is meshed with the moving gear 12, it drives the moving gear 12 to rotate. When the swing rack 611 drives the rotating gear 62 to rotate, the moving gear 12 rotates synchronously. When the moving gear 12 rotates, the transmission gear 821 rotates, driving the arc tube 82 to move, so that the position of the arc tube 82 corresponding to the mounting platform 30 changes, thereby realizing multi-angle steam spraying on the oblique side of the mounting platform 30, and completing comprehensive steam maintenance of the prefabricated components.

[0041] In this way, the arc tube 82 rotates synchronously while the air outlet pipe 22 swings, so that the upper side and the surrounding side of the prefabricated component are sprayed with steam in all directions at the same time.

[0042] Reference Figure 2 and Figure 3 , wherein the mounting platform 30 is arranged in the working box 10 through the mounting component 40, the mounting component 40 includes a mounting motor 41 and a mounting frame 42, the mounting motor 41 is arranged on the working box 10, the mounting frame 42 is connected to the output end of the mounting motor 41, the mounting frame 42 is horizontally arranged in the working box 10, and the mounting frame 42 is rotatably connected to the working box 10, and the mounting platform 30 is arranged on the mounting frame 42.

[0043] The mounting motor 41 is started to drive the mounting frame 42 to rotate, thereby turning the mounting platform 30, that is, the upper surface of the mounting platform 30 is tilted to facilitate loading and unloading of prefabricated components. At the same time, the mounting platform 30 is turned sideways, so that the prefabricated components on the mounting platform 30 are tilted to align with the air outlet pipe 22 and the arc tube 82, so that steam can be sprayed at different angles of the prefabricated components, thereby achieving full coverage of the prefabricated components and improving the quality of steam curing of the prefabricated components.

[0044] Reference Figure 2 and Figure 3 A rotating assembly 50 is provided on the mounting frame 42, and the rotating assembly 50 includes a rotating motor 51, a rotating bevel gear 52 and a rotating bevel gear 53. The rotating motor 51 is provided on the mounting frame 42, and the output end of the rotating motor 51 is coaxially fixed with the rotating bevel gear 52, and the rotating bevel gear 53 is coaxially fixed with the mounting platform 30. The rotating bevel gear 53 is rotatably connected to the mounting frame 42, and the rotating bevel gear 53 is meshed with the rotating bevel gear 52.

[0045] The rotating motor 51 is started to drive the rotating bevel gear 52 to rotate, thereby driving the rotating bevel gear 53 to rotate, and then the mounting platform 30 to rotate, so that the plurality of air outlet pipes 22 above the prefabricated components swing to spray steam while the prefabricated components also rotate to receive steam, thereby improving the uniformity of the contact between the prefabricated components and the steam and improving the quality of steam curing of the prefabricated components.

[0046] Reference Figure 1 and Figure 2 One side of the working box 10 is open, and a water box 110 with an open top is provided in the working box 10 . The water box 110 is located below the mounting platform 30 , and the water box 110 can block the opening of the working box 10 .

[0047] When steam enters the working box 10 and performs steam curing on the prefabricated components in the working box 10, the steam continues to fall. When the steam contacts objects such as the mounting table 30 and the mounting frame 42, the steam accumulates on the objects and liquefies to form liquid water, which then falls under the action of gravity to be stored in the water box 110, thereby collecting water, avoiding waste of water resources, and preventing water from submerging the working box 10.

[0048] When the steam curing is completed, the water box 110 is moved away from the working box 10 until the water box 110 is completely pulled out of the working box 10, so as to facilitate the cleaning of the water in the water box 110. At this time, one side of the working box 10 is open, so as to facilitate the loading and unloading of prefabricated components on the installation table 30.

[0049] The implementation principle of the steam curing device for precast concrete components in the embodiment of the present application is as follows: when in use, the precast components are placed on the mounting platform 30 using a lifting tool, and then the steam enters the plurality of branch pipes 21 from the steam pipe 20, and then enters the corresponding air outlet pipes 22 through the branch pipes 21, and is sprayed out from the air outlet pipes 22, and falls onto the mounting platform 30 below, thereby curing the precast components on the mounting platform 30. During this process, the rotating assembly 60 is started to drive the plurality of air outlet pipes 22 to rotate, so that the orientation of the output end of the air outlet pipes 22 changes, so as to realize the spraying of steam at different positions of the mounting platform 30, so that the steam spraying is more uniform and comprehensive, and the quality of curing the precast components is improved.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A steam curing device for precast concrete components, characterized in that: The invention comprises a working box (10), a steam pipe (20) and a mounting platform (30), wherein the steam pipe (20) is arranged on the working box (10), a plurality of air outlet pipes (22) are arranged on the top of the working box (10), the steam pipe (20) is connected to a plurality of branch pipes (21), the plurality of branch pipes (21) correspond to the air outlet pipes (22) one by one, and the branch pipes (21) are connected to the air outlet pipes (22), a rotating assembly (60) is arranged on the working box (10), the rotating assembly (60) is connected to the air outlet pipe (22) and is used to drive the air outlet pipe (22) to swing, and the mounting platform (30) is located below the air outlet pipe (22).

2. The steam curing device for precast concrete components according to claim 1, characterized in that: The rotating assembly (60) comprises a rotating rack (61) and a plurality of rotating gears (62); the rotating gears (62) are rotatably connected to the air outlet pipe (22); the plurality of air outlet pipes (22) are arranged along the length direction of the working box (10); the rotating rack (61) is arranged along the length direction of the working box (10); and the rotating rack (61) can move on the working box (10) along the length direction of the working box (10); the rotating rack (61) is meshed with the rotating gears (62).

3. The steam curing device for precast concrete components according to claim 2, characterized in that: The rotating rack (61) includes two swing racks (611), the swing racks (611) meshing with the rotating gear (62), the two swing racks (611) being arranged symmetrically with the central axis of the working box (10), the two swing racks (611) being connected via a connecting assembly (70), the connecting assembly (70) including a cylinder (72) and two connecting rods (73), a connecting plate (71) being slidably connected to the working box (10), the connecting plate (71) is located between the two swing racks (611), the working box (10) is provided with an electric push rod (11), the electric push rod (11) is connected to the connecting plate (71), and is used to drive the connecting plate (71) to move along the length direction of the working box (10), the cylinder (72) is arranged on the connecting plate (71), one end of the connecting rod (73) is hinged on the swing rack (611), and the other end is hinged on the output end of the cylinder (72).

4. The steam curing device for precast concrete components according to claim 3, characterized in that: A plurality of through holes (32) are formed through the mounting platform (30). Side spray assemblies (80) are provided on both sides of the working box (10). The side spray assemblies (80) include a connecting pipe (81) and an arc pipe (82). The arc pipe (82) is provided on the working box (10). One end of the connecting pipe (81) is connected to the steam pipe (20), and the other end is connected to the arc pipe (82). The inner wall of the arc plate is aligned with the opening on the inner wall of the arc pipe (82) of the mounting platform (30).

5. The steam curing device for precast concrete components according to claim 4, characterized in that: A moving gear (12) is rotatably connected to the side wall of the working box (10), a transmission gear (821) is fixed to the outer wall of the arc tube (82), the moving gear (12) is meshed with the transmission gear (821), and the swing rack (611) is connected to the moving gear (12) through a linkage assembly (90). When the swing rack (611) moves, it is used to drive the moving gear (12) to rotate.

6. The steam curing device for precast concrete components according to claim 5, characterized in that: The linkage assembly (90) comprises a linkage rod (91) and a linkage rack (92); one end of the linkage rod (91) is fixed to the swing rack (611), and the other end is fixed to the linkage rack (92); the linkage rack (92) is meshed with the moving gear (12).

7. The steam curing device for precast concrete components according to claim 1, characterized in that: The mounting platform (30) is connected to the working box (10) via a mounting assembly (40); the mounting assembly (40) comprises a mounting motor (41) and a mounting frame (42); the mounting motor (41) is arranged on the working box (10); the mounting frame (42) is connected to an output end of the mounting motor (41); the mounting frame (42) is horizontally mounted in the working box (10); and the mounting frame (42) is rotatably connected to the working box (10); and the mounting platform (30) is arranged on the mounting frame (42).

8. The steam curing device for precast concrete components according to claim 7, characterized in that: A rotating assembly (50) is provided on the mounting frame (42), and the rotating assembly (50) comprises a rotating motor (51), a rotating bevel gear (52) and a rotating bevel gear (53). The rotating motor (51) is provided on the mounting frame (42), and the output end of the rotating motor (51) is coaxially fixed with the rotating bevel gear (52), and the rotating bevel gear (53) is coaxially fixed with the mounting platform (30). The rotating bevel gear (53) is rotatably connected to the mounting frame (42), and the rotating bevel gear (53) is meshed with the rotating bevel gear (52).

9. The steam curing device for precast concrete components according to claim 1, characterized in that: A fence (31) is provided on the mounting platform (30), and the fence (31) is arranged along the circumference direction of the mounting platform (30).

10. The steam curing device for precast concrete components according to claim 1, characterized in that: One side of the working box (10) is open, and a water box (110) with an open top is provided in the working box (10). The water box (110) is located below the mounting platform (30), and the water box (110) can block the opening of the working box (10).

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