Cement prefabricated product curing device and curing method thereof

Abstract

The invention relates to the technical field of cement prefabricated product curing, and provides a cement prefabricated product curing device and a curing method thereof. The cement prefabricated product curing device comprises at least two shells which can be spliced with each other; the butt-joint frame is arranged on the left splicing surface between the two spliced shells, and clamping holes are symmetrically formed in the butt-joint frame; and the limiting clamping piece comprises a T-shaped mounting block and a wedge-shaped clamping block. By means of the butt-joint frames and the limiting clamping pieces, the shells can be assisted to complete splicing, the shells are communicated through the communicating pipes, the number of the shells can be freely increased or decreased according to the needs and the maintenance scale, and cement prefabricated parts are directly pushed into the shells during use; and the steam is discharged into the shell through the steam output mechanism, installation is easy, conveying of materials is very convenient, the shell can be folded, and the occupied space can be reduced when the device is idle.

Description

Technical Field

[0001] The embodiments of the present invention generally relate to the technical field of cement preform curing, and more specifically, to a cement preform curing device and a curing method thereof. Background Art

[0002] Cement precast parts are prefabricated products made of cement, steel bars and other materials, suitable for various construction and engineering projects. Cement precast parts can be manufactured in the factory in advance and transported to the construction site for assembly when needed, which can effectively improve the construction efficiency of the project.

[0003] After the production of precast cement parts is completed, they need to be cured. The most widely used curing method is steam curing. However, when steam curing precast cement parts, the precast cement parts are usually stacked, and then the surface of the precast cement parts is covered with waterproof cloth, and steam is input into the precast cement parts. However, the waterproof cloth will adhere to the surface of the precast cement parts under the action of gravity, so that the precast cement parts cannot be fully in contact with the steam, resulting in poor curing effect. In addition, the laying and folding of the waterproof cloth is more troublesome and requires the cooperation of multiple people. In the prior art, there is also a method of steam curing precast cement parts by digging a curing pool. Although the safety and curing effect are improved, the digging of the curing pool takes up a lot of space, which increases the maintenance cost. In addition, during maintenance, the precast cement parts need to be transferred to the curing pool by a crane, and they need to be hoisted out again after the curing is completed, which is more cumbersome. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a cement preform curing device and a curing method thereof, which can be assembled by splicing, is easy to operate during curing, and can also improve the curing effect of the cement preform.

[0005] The technical implementation scheme of the present invention is: a cement prefabricated product curing device, comprising: a shell, at least two of which are provided, and the shells can be spliced ​​with each other; a docking frame, which is arranged on the splicing surface between the two spliced ​​shells and is located on the left, and has symmetrically provided clamping holes on the splicing surface; a limiting clamp, comprising a T-shaped mounting block and a wedge-shaped clamping block, the T-shaped mounting block is symmetrically fixedly arranged on the splicing surface between the two spliced ​​shells and located on the right, the wedge-shaped clamping block is slidably connected to the T-shaped mounting block through a spring, and the wedge-shaped clamping block can be clamped into the clamping hole on the docking frame; a connecting pipe, which is arranged between the two spliced ​​shells and can connect the two shells, so that steam can be transported to each shell through the connecting pipe; a steam output mechanism, which can transport steam into the shell to realize steam curing of the cement prefabricated product in the shell; a covering component, which is arranged on the shell and is used to cover the openings at the front and rear ends of the shell, so that the curing of the cement prefabricated product is completed in a relatively closed space.

[0006] Furthermore, the steam output mechanism includes: a steam generator for providing steam for the maintenance of cement prefabricated products, and a shut-off valve is installed at its air outlet; a limiting sleeve symmetrically arranged on the two inner walls of the shell; a steam nozzle symmetrically and closely fitting the two inner walls of the shell, and connected to rotate together with all the limiting sleeves on the same inner wall; a four-way joint symmetrically arranged on the upper parts of the two inner walls of the shell, and the four-way joint located farthest to the left is connected to the air outlet of the steam generator; a fixing sleeve evenly arranged on the inner wall of the shell, and at the same height as the installation position of the four-way joint; a steam pipe arranged between the four-way joint and the steam nozzle on the same side, and passing through all the fixing sleeves along the way, and the steam pipe is also arranged between the four-way joints in the same shell.

[0007] Furthermore, the covering assembly includes: a winding drum, which is symmetrically arranged on the front and rear sides of the shell and has a torsion spring inside; a covering cloth, which is wound in the winding drum, and the end cover of the covering cloth is made of ferromagnetic metal; a strong magnetic block, which is symmetrically arranged on the front and rear sides of the shell and is located on the side wall opposite to the winding drum, and can adsorb the end cover of the covering cloth.

[0008] Furthermore, the top of the shell is configured as two square plates of identical size and hinged to each other, and the square plates and their corresponding side walls are hinged to each other, so that the shell can be folded to reduce the space it occupies.

[0009] Furthermore, a triangular stabilizing frame is provided on the shell closest to the steam generator to provide auxiliary support to the shell when it is unfolded, and a temperature controller is also installed on the side wall of the shell to control the temperature inside the shell within an appropriate range.

[0010] Furthermore, a rotating assembly is arranged in the shell, and the rotating assembly includes: an electric push rod, which is arranged on the left side wall of the shell; a piston cylinder, which is arranged on the left side wall of the shell, and the piston cylinder consists of a cylinder body and a piston body, and the movable end of the electric push rod is inserted into the cylinder body of the piston cylinder and is fixedly connected to the piston part of the piston cylinder; a three-way valve, which is symmetrically installed on the two inner walls of the shell, the three-way valve located on the left is connected to the air outlet of the piston cylinder, and the three-way valves in the same shell are connected through pipelines; hollow square tubes, which are symmetrically arranged on the two inner walls of the shell, and are distributed on both sides of the three-way valves, and are connected to the three-way valves on the same side through pipelines; a full gear, which is arranged on the steam nozzle; a driving member, which is arranged inside the hollow square tube and can cooperate with the corresponding full gear.

[0011] Furthermore, the driving member is divided into a movable part and a rack part. The movable part is located inside the hollow square tube, fits against the inner wall of the hollow square tube, and is slidingly connected to the hollow square tube through a spring. The rack part is meshed with the corresponding full gear. When the driving member moves, the steam nozzle can be rotated under the meshing action of the rack part and the full gear.

[0012] Furthermore, it also includes a locking piece and a limit block, the locking piece is arranged on the winding drum, and the limit block is symmetrically arranged at the front and rear ends of the right side wall of the shell, and the installation height of the locking piece and the limit block is consistent, and the locking piece can cooperate with the corresponding limit block to limit the two side walls of the shell when the shell is folded.

[0013] Furthermore, the locking member includes: an installation shaft, fixedly installed on the winding drum; a right-angle locking block, rotatably connected to the installation shaft through a torsion spring; and an elastic pad, arranged on the right-angle locking block, forming a locking space adapted to the limit stop block between the elastic pad and the vertical part of the right-angle locking block.

[0014] A method for curing a cement prefabricated product comprises the following steps: S1. Determine the number of shells required according to the maintenance scale, unfold the shells, splice the shells using the docking frame and the limit clamps, connect the corresponding four-way joints using the connecting pipes, and then deliver the cement prefabricated products into the shells; S2. Use the cover assembly to seal the shell, then start the steam generator, discharge steam into the shell through the cooperation of the steam pipe and the steam nozzle, use the rotating assembly to control the swing of the steam nozzle to make the steam evenly distributed, and adjust the temperature in the shell through the temperature controller; S3. After the maintenance is completed, the internal parts of the shell are disassembled, and the shell is folded. The unfolding of the shell is restricted by the cooperation of the positioning piece and the limit block, and the shell can be stored together later.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The present invention can assist the assembly of the shells by using a docking frame and a limit clamp, and connect the shells through a connecting pipe, so that the number of shells can be freely increased or decreased according to the need and the maintenance scale. When in use, the cement prefabricated parts are directly pushed into the shells, and steam is discharged into the shells through the steam output mechanism. The installation is simple and the material transportation is also very convenient. The shell can be folded, and the space occupied by the device can be reduced when it is idle. 3. Through the setting of the covering component, the shell can be covered by stretching the covering cloth, so that the cement prefabricated parts can be completed in a relatively closed space, with better curing effect. The stretching and rolling of the covering cloth are simple and can be completed by a single person; 2. By setting the rotating assembly, the electric push rod is used to suck the air in the piston cylinder, which can control the driving part to slide in the hollow square tube and cooperate with the steam nozzle to swing back and forth, so that the steam inside the shell can be evenly distributed, and the curing effect of the cement prefabricated parts is better; 4. With the cooperation of the positioning member and the limit stopper, after the shell is folded, the positioning member is used to position the limit stopper, so that the two side walls of the shell can be fixed to prevent the shell from unfolding by itself during storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the embodiments of the present invention will become more easily understood through the following detailed description with reference to the accompanying drawings, in which several embodiments of the present invention will be described by way of example and not limitation.

[0017] Figure 1 A schematic diagram of the overall structure of an exemplary embodiment of the present invention is shown.

[0018] Figure 2 A partial structural schematic diagram of an exemplary embodiment of the present invention is shown.

[0019] Figure 3 A schematic diagram of the internal structure of an exemplary embodiment of the present invention is shown.

[0020] Figure 4 A schematic structural diagram of a cover assembly after being stretched in an exemplary embodiment of the present invention is shown.

[0021] Figure 5 A schematic diagram showing the connection relationship between the electric push rod and the piston cylinder in an exemplary embodiment of the present invention.

[0022] Figure 6 A schematic structural diagram of a rotating assembly in an exemplary embodiment of the present invention is shown.

[0023] Figure 7 A cross-sectional view of a hollow square tube in an exemplary embodiment of the present invention is shown.

[0024] Figure 8 A schematic structural diagram of a connecting mechanism in an exemplary embodiment of the present invention is shown.

[0025] Fig. 9 A schematic structural diagram of a docking frame and a limiting clamp in an exemplary embodiment of the present invention is shown.

[0026] Fig.10 A schematic structural diagram of a positioning member and a limiting stopper in an exemplary embodiment of the present invention is shown.

[0027] Fig.11 A schematic structural diagram of a locking member in an exemplary embodiment of the present invention is shown.

[0028] In the accompanying drawings: 1-steam generator, 11-shut-off valve, 2-shell, 21-triangular stabilizing frame, 22-limiting belt, 23-temperature controller, 3-steam nozzle, 4-four-way joint, 41-fixing sleeve, 42-steam pipe, 5-covering assembly, 51-winding drum, 52-covering cloth, 53-strong magnetic block, 6-rotating assembly, 61-electric push rod, 62-piston cylinder, 63-three-way valve, 64-hollow square tube, 65-full gear, 66-driving member, 7-docking frame, 71-limiting clamp, 711-T-shaped mounting block, 712-wedge-shaped clamp, 72-connecting pipe, 8-clamping member, 81-mounting shaft, 82-right-angle clamp, 83-elastic pad, 9-limiting block. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0030] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects.

[0031] See also Figure 1 An embodiment of the present invention provides a cement preform curing device, which mainly includes a steam generator 1 and a shell 2, wherein the number of the shells 2 can be two or more. The following takes the number of the shells 2 as an example to illustrate the adjustment method of the shell 2 in the embodiment of the present invention.

[0032] See also Figure 1 and Figure 2 In the embodiment of the present invention, the steam generator 1, the shutoff valve 11, the shell 2, the triangular stabilizing frame 21 and the temperature controller 23 are included. The shell 2 is provided with two pieces, and the two shells 2 can be spliced ​​with each other. The top of the shell 2 is provided with two square plates of the same size and hinged to each other, and the square plates and the corresponding side walls are hinged to each other. When the shell 2 is unfolded, the cement prefabricated product can be placed inside it for curing, and two triangular stabilizing frames 21 are symmetrically fixedly installed on the left side wall of the shell 2 located on the left, which can improve its stability when the shell 2 is unfolded. After the curing is completed, the shell 2 can be folded to reduce the space it occupies and facilitate its storage. The steam generator 1 is located on the left side of the shell 2 located on the left, and can provide steam for the curing of the cement prefabricated product, and the shutoff valve 11 is installed at the air outlet, and the steam input speed can be controlled by the shutoff valve 11. The temperature controller 23 is installed on the left side wall of the shell 2, and the temperature inside the shell 2 can be monitored and adjusted by the temperature controller 23, so that the cement prefabricated product can be cured at a suitable temperature.

[0033] See also Figure 2 and Figure 3 In the embodiment of the present invention, it also includes a limiting sleeve 22, a steam nozzle 3, a four-way joint 4, a fixing sleeve 41, a steam pipe 42 and a connecting pipe 72. Four limiting sleeves 22 are fixedly provided on the left and right inner walls of the shell 2 by bolts, and the front and rear ends of the limiting sleeve 22 are both set in arc shape. Two steam nozzles 3 are respectively provided on the left and right inner walls of the shell 2. The steam nozzles 3 are located at the arc shape of the limiting sleeve 22 and are connected to rotate together with all the limiting sleeves 22 on the same side. Four-way joints 4 are installed on the upper part of both side walls of the shell 2. The four-way joints 4 are set through the side walls of the shell 2, and the four-way joints 4 located farthest to the left are connected to the air outlet of the steam generator 1. The four-way joints 4 on the joint surfaces of the two shells 2 are connected by a connecting pipe 72. Four fixing sleeves 41 are respectively installed at the same height position as the four-way joints 4 on the two inner walls of the shell 2, and two are installed on each of the front and rear sides of the four-way joint 4. The four-way joint 4 and the steam spray pipe 3 on the same side are connected by a steam pipe 42, and the steam pipe 42 passes through the fixing sleeve 41 along the way and is limited and fixed by the fixing sleeve 41. The four-way joints 4 in the same housing 2 are also connected by the steam pipe 42.

[0034] In the embodiment of the present invention, the steam generated by the steam generator 1 can be discharged to the steam pipe 42 through the four-way joint 4, and then transported to the steam nozzle 3 by the steam pipe 42, and finally evenly sprayed into the shell 2 through the steam nozzle 3, and the two shells 2 can be connected through the connecting pipe 72, so that the steam can be discharged into the corresponding shell 2 from left to right in sequence.

[0035] See also Figure 1 and Figure 4 In the embodiment of the present invention, a covering assembly 5 is also included. The covering assembly 5 is composed of a winding drum 51, a covering cloth 52 and a strong magnetic block 53, wherein the winding drum 51 is fixedly mounted on the front and rear ends of the left side wall of the shell 2, and a torsion spring is arranged inside the winding drum 51, and the covering cloth 52 is wound inside the winding drum 51. The end caps of the covering cloth 52 are made of metal iron and have ferromagnetism. Strong magnetic blocks 53 are fixedly arranged on the front and rear ends of the right side wall of the shell 2. The covering cloth 52 is pulled so that its end cap contacts the strong magnetic block 53, which can adsorb it and prevent the covering cloth 52 from being wound into the recovery drum 51, thereby sealing the shell 2, preventing a large amount of steam from being lost, and ensuring that the maintenance process can be completed smoothly. Moreover, the stretching and winding of the covering cloth 52 can be completed by a single person, and the operation is convenient.

[0036] See also Figure 4-Figure 7 In the embodiment of the present invention, a rotating assembly 6 is also included. The rotating assembly 6 is composed of an electric push rod 61, a piston cylinder 62, a three-way valve 63, a hollow square tube 64, a full gear 65 and a driving member 66. The electric push rod 61 is installed on the left side wall of the housing 2, and a piston cylinder 62 is arranged at a higher position on the same vertical line as its installation position. The piston cylinder 62 is composed of a cylinder body and a piston part. The movable end of the electric push rod 61 is inserted into the cylinder body of the piston cylinder 62 and is fixedly connected to the piston part of the piston cylinder 62. The cylinder body of the piston cylinder 62 is set in an inverted L shape, and its horizontal part passes through the left side wall of the housing 2. Three-way valves 63 are installed on both inner side walls of the housing 2. The three-way valve 63 on the left inner side wall of the housing 2 is connected to the air outlet of the piston cylinder 62, and the three-way valves 63 in the same housing 2 are connected through pipelines. On the two inner side walls of the shell 2, at the same height as the three-way valve 63, hollow square tubes 64 are symmetrically arranged. The hollow square tubes 64 are located on both sides of the corresponding three-way valve 63 and are connected to the three-way valve 63 on the same side through a pipeline. A driving member 66 is slidably arranged inside the hollow square tube 64 through a spring. The driving member 66 is divided into a movable part and a rack part. The movable part is located inside the hollow square tube 64, fits with the inner wall of the hollow square tube 64, and is slidably connected to the hollow square tube 64 through a spring. A full gear 65 is fixedly arranged on the upper part of the steam nozzle 3, and the rack part of the driving member 66 can mesh with the corresponding full gear 65.

[0037] In an embodiment of the present invention, when the movable end of the electric push rod 61 extends / contracts, the air in the piston cylinder 62 can be squeezed out / withdrawn. When the three-way valve 63 is connected to the pipeline, air will be injected / extracted into the hollow square tube 64, and the driving member 66 will then approach / move away from the steam nozzle 3. During this process, the rack portion of the driving member 66 will drive the full gear 65 to rotate under the meshing action, and the steam nozzle 3 will also rotate accordingly, so that the steam spray and discharge will be more uniform.

[0038] See also Figure 1 , Figure 8 and Fig. 9 In the embodiment of the present invention, a docking frame 7 and a limit clamp 71 are also included, and the splicing between the shells 2 is completed by the docking frame 7 and the limit clamp 71; the docking frame 7 is fixedly installed on the right side wall of the shell 2 located on the left, and two clamping holes are symmetrically provided on the docking frame 7. The limit clamp 71 is symmetrically arranged on the left side wall of the shell 2 located on the right, and the limit clamp 71 consists of a T-shaped mounting block 711 and a wedge-shaped clamp 712, wherein the T-shaped mounting block 711 is fixed on the left side wall of the shell 2 located on the right by bolts, and the wedge-shaped clamp 712 is slidably connected to the T-shaped mounting block 711 by a spring, and the splicing between the two shells 2 can be completed by clamping the wedge-shaped clamp 712 into the clamp hole in the docking frame 7.

[0039] See also Fig.10 and Fig.11 In an embodiment of the present invention, a positioning member 8 and a limiting stopper 9 are also included, wherein the positioning member 8 is composed of a mounting shaft 81, a right-angle block 82 and an elastic pad 83. The two winding drums 51 are fixedly provided with a mounting shaft 81, and a right-angle block 82 is rotatably provided on the mounting shaft 81 through a torsion spring. An elastic pad 83 is provided on the right-angle block 82, and a positioning space is formed between the elastic pad 83 and the vertical portion of the right-angle block 82. Limiting stops 9 are provided on the front and rear ends of the right side wall of the shell 2. When the shell 2 is folded, the right-angle block 82 is rotated and the limiting stopper 9 is embedded in the positioning space between the elastic pad 83 and the right-angle block 82, so that the shell 2 can be limited and fixed so that it cannot be unfolded at will.

[0040] A method for curing a cement prefabricated product comprises the following steps: S1. Determine the number of shells 2 required according to the maintenance scale. After unfolding the shells 2, insert the wedge-shaped clamping block 712 into the corresponding clamping hole on the docking frame 7 to complete the splicing of the shells 2. Then use the connecting pipe 72 to connect the four-way joint 4 on the splicing surface of the shells 2. Then, the cement preform can be transported into the shells 2. S2, pull the covering cloth 52 out from the winding drum 51, and use the strong magnetic block 53 to adsorb the end cover of the covering cloth 52, so that the covering cloth 52 can be stretched, and the shell 2 is closed, and then the steam generator 1 is started, and the steam is discharged into the shell 2 through the cooperation of the steam pipe 42 and the steam nozzle 3, and under the action of the connecting pipe 72, the steam can be discharged into all the shells 2 in turn, and the electric push rod 61 can also be started to reciprocate and retract, and the piston cylinder 62 is cooperated to change the air pressure in the hollow square tube 64, so that the driving member 66 reciprocates, and the steam nozzle 3 is reciprocated with the cooperation of the full gear 65, so that the steam is sprayed evenly, and the temperature controller 23 can be used to keep the shell 2 at a suitable temperature; S3. After the maintenance is completed, the internal components of the shell 2 are disassembled and the shell 2 is folded to reduce the space it occupies, and the limit block 9 is inserted between the elastic pad 83 and the right-angle block 82 to prevent the two side walls of the shell 2 from being unfolded at will. Then the shell 2 can be stored together.

[0041] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

[0042] The above are only optional embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cement prefabricated product curing device, characterized in that: include: The shells (2) are provided with at least two, and the shells (2) can be spliced ​​with each other; A docking frame (7) is arranged on a left-side joint surface between the two shells (2) that are joined together, and has symmetrically provided clamping holes thereon; The limiting clamp (71) comprises a T-shaped mounting block (711) and a wedge-shaped clamp (712), wherein the T-shaped mounting block (711) is symmetrically fixedly arranged between the two shells (2) spliced ​​to each other, on the right splicing surface, and the wedge-shaped clamp (712) is slidably connected to the T-shaped mounting block (711) via a spring, and the wedge-shaped clamp (712) can be snapped into a clamping hole on the docking frame (7); A connecting pipe (72) is arranged between the two shells (2) that are spliced ​​together and is capable of connecting the two shells (2) so that steam can be transported to each shell (2) through the connecting pipe (72); A steam output mechanism capable of conveying steam into the shell (2) to achieve steam curing of the cement prefabricated product in the shell (2); The covering assembly (5) is arranged on the shell (2) and is used to cover the openings at the front and rear ends of the shell (2), so that the cement prefabricated product can be cured in a relatively closed space.

2. A cement prefabricated product curing device according to claim 1, characterized in that: The steam output mechanism comprises: A steam generator (1) is used to provide steam for curing cement preforms, and a shut-off valve (11) is installed at the steam outlet; A limiting sleeve (22) symmetrically arranged on two inner side walls of the shell (2); The steam spray pipe (3) is symmetrically arranged to fit the two inner side walls of the shell (2), and is rotatably connected to all the limiting sleeves (22) on the same inner side wall; A four-way joint (4) is symmetrically arranged on the upper parts of the two inner side walls of the shell (2), and the four-way joint (4) located farthest to the left is connected to the gas outlet of the steam generator (1); A fixing sleeve (41) is evenly arranged on the inner wall of the housing (2) and is at the same height as the installation position of the four-way joint (4); The steam pipe (42) is arranged between the four-way joint (4) and the steam spray pipe (3) on the same side and passes through all the fixing sleeves (41) along the way. The steam pipe (42) is also arranged between the four-way joints (4) in the same shell (2).

3. A cement preform curing device according to claim 1, characterized in that: The covering component (5) comprises: A winding drum (51) is symmetrically arranged at the front and rear sides of the housing (2) and is provided with a torsion spring; A covering cloth (52) is wound in the winding drum (51), and an end cap of the covering cloth (52) is made of ferromagnetic metal; The strong magnetic blocks (53) are symmetrically arranged on the front and rear sides of the housing (2) and are located on the side wall opposite to the winding drum (51), and are capable of adsorbing the end cover of the covering cloth (52).

4. A cement preform curing device according to claim 2, characterized in that: The top of the shell (2) is provided with two square plates of identical size and hinged to each other, and the square plates and their corresponding side walls are hinged to each other, so that the shell (2) can be folded to reduce the space it occupies.

5. A cement prefabricated product curing device according to claim 4, characterized in that: A triangular stabilizing frame (21) is provided on the shell (2) located closest to the steam generator (1) to provide auxiliary support to the shell (2) when it is unfolded. A temperature controller (23) is also installed on the side wall of the shell (2) to control the temperature inside the shell (2) within a suitable range.

6. A cement prefabricated product curing device according to claim 3, characterized in that: A rotating assembly (6) is arranged in the housing (2), and the rotating assembly (6) comprises: An electric push rod (61) is arranged on the left side wall of the housing (2); A piston cylinder (62) is arranged on the left side wall of the housing (2); the piston cylinder (62) is composed of a cylinder body and a piston body; the movable end of the electric push rod (61) is inserted into the cylinder body of the piston cylinder (62) and is fixedly connected to the piston body of the piston cylinder (62); The three-way valves (63) are symmetrically mounted on the two inner side walls of the housing (2), the three-way valve (63) on the left is connected to the gas outlet of the piston cylinder (62), and the three-way valves (63) in the same housing (2) are connected via pipelines; A hollow square tube (64) is symmetrically arranged on two inner side walls of the housing (2) and distributed on both sides of the three-way valve (63), and is connected to the three-way valve (63) on the same side through a pipeline; A full gear (65) is arranged on the steam spray pipe (3); A driving member (66) is disposed inside the hollow square tube (64) and is capable of cooperating with the corresponding full gear (65).

7. A cement preform curing device according to claim 6, characterized in that: The driving member (66) is divided into a movable portion and a rack portion. The movable portion is located inside the hollow square tube (64) and is in contact with the inner wall of the hollow square tube (64). The movable portion is slidably connected to the hollow square tube (64) via a spring. The rack portion is meshed with the corresponding full gear (65). When the driving member (66) moves, the steam spray pipe (3) can be rotated under the meshing action of the rack portion and the full gear (65).

8. A cement prefabricated product curing device according to claim 7, characterized in that: It also comprises a positioning member (8) and a limiting block (9), wherein the positioning member (8) is arranged on the winding drum (51), and the limiting block (9) is symmetrically arranged at the front and rear ends of the right side wall of the shell (2), and the positioning member (8) and the limiting block (9) are installed at the same height, and the positioning member (8) can cooperate with the corresponding limiting block (9) to limit the two side walls of the shell (2) when the shell (2) is folded.

9. A cement prefabricated product curing device according to claim 8, characterized in that: The positioning member (8) comprises: A mounting shaft (81) fixedly mounted on the winding drum (51); A right-angle clamping block (82) rotatably connected to the mounting shaft (81) via a torsion spring; The elastic pad (83) is arranged on the right-angle clamping block (82), and forms a clamping space between the elastic pad and the vertical portion of the right-angle clamping block (82) that is adapted to the limit stopper (9).

10. A method for curing cement prefabricated products, characterized in that: The cement prefabricated product curing device according to claim 9 comprises the following steps: S1. Determine the number of shells (2) required according to the maintenance scale, unfold the shells (2), splice the shells (2) using the docking frame (7) and the limit clamp (71), connect the corresponding four-way joints (4) using the connecting pipe (72), and then deliver the cement prefabricated product into the shells (2); S2, using the cover assembly (5) to seal the shell (2), then starting the steam generator (1), discharging steam into the shell (2) through the cooperation of the steam pipe (42) and the steam nozzle (3), and using the rotating assembly (6) to control the swing of the steam nozzle (3) so that the steam is evenly distributed, and adjusting the temperature inside the shell (2) through the temperature controller (23); S3. After the maintenance is completed, the internal components of the shell (2) are disassembled, and the shell (2) is folded. The unfolding of the shell (2) is restricted by the cooperation of the positioning member (8) and the limit stopper (9), and the shell (2) can be stored together afterwards.

Images