Construction method of prefabricated bathroom

Abstract

The application relates to a construction method of an assembled bathroom, which comprises the following steps: S1, a pre-assembly area is demarcated and arranged near a reserved bathroom area; S2, a bottom support of a main frame is arranged in the pre-assembly area, then a plurality of stand columns of the main frame are supported on the bottom support, and a bottom disc module is installed on the bottom support; S3, wall surface modules are installed on the left side and the right side and the front side of the frame main body, and the wall surface modules are connected with the bottom disc module; S4, a ceiling module is installed on the upper part in the frame main body; a top support is installed on the top of the stand column, and a cross beam is installed between adjacent stand columns; S5, a washing module is installed on the rear side in the main frame to form an integrated bathroom, then the bathroom is hoisted to the bathroom area and fixedly installed, and the bathroom has the beneficial effects that the pre-assembly integrated displacement mode breaks through the limitation of the site space on the construction of the assembled bathroom, realizes efficient adaptation of multiple scenes from buildings to trains, bullet trains and the like, and has economy and reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of prefabricated building, in particular to a construction method of prefabricated bathroom. BACKGROUND

[0002] At present, in the process of building industrialization, prefabricated bathroom as an important part of modular construction, with the characteristics of factory prefabrication and on-site rapid assembly, effectively solves the problems of more wet work, long construction period and difficult quality control in traditional bathroom construction, and has been widely used in scenes such as welfare housing, commercial complex and medical building. Its core advantage lies in that the main frame, chassis, wall surface, sanitary ware and other functional modules are standardized produced in the factory, and then transported to the site for assembly and installation, which greatly improves the construction efficiency and quality stability.

[0003] However, the construction method of the existing prefabricated bathroom still has significant technical defects: first, there is no pre-assembly link, and the modules are directly installed in the reserved bathroom area, which is limited by the site space, and the module positioning accuracy is low (such as the wall surface and the chassis are often more than 5mm deviation), which is easy to cause sealing failure; second, the process connection is chaotic, such as the cross operation of pipeline connection and module fixing, which not only prolongs the construction period, but also increases the risk of interface leakage; third, the overall rigidity is insufficient, and the dispersedly installed modules lack pre-integration, which need to be disassembled and reassembled for later displacement or adjustment, and the adaptability is poor. SUMMARY

[0004] (I) Technical problems to be solved

[0005] In view of the above shortcomings and deficiencies of the prior art, the present application provides a construction method of prefabricated bathroom, which solves the technical problems of low installation accuracy and poor construction efficiency of the prior art.

[0006] (II) Technical scheme

[0007] In order to achieve the above purpose, the main technical scheme adopted by the present application includes:

[0008] The present application provides a construction method of prefabricated bathroom, which is used for prefabricated bathroom with main frame, chassis module, ceiling module, wall module, wash module and room door module, wherein the main frame includes bottom support, column and top support, and the top support is supported and installed on the bottom support through the column; comprising the steps of:

[0009] S1, a pre-assembly area is demarcated and set near the reserved bathroom area.

[0010] S2, the bottom support of the main frame is arranged in the pre-assembly area, then the plurality of columns of the main frame are supported on the bottom support, and the chassis module is installed on the bottom support.

[0011] S3, install wall modules on both sides and front side of the frame body, and connect the wall modules with the chassis modules; install a room door module on the front side of the main frame.

[0012] S4, install a ceiling module in the upper part of the frame body; install a top support on the top of the stand column, and install a cross beam between adjacent stand columns to form a main frame.

[0013] S5, install a washing module on the rear side of the main frame, and install a toilet in the main frame to form a whole bathroom, and then hoist the bathroom to the bathroom area for fixed installation.

[0014] Optionally, step S1 comprises:

[0015] S11, according to the overall size of the bathroom module and the hoisting operation requirement, the boundary of the pre-assembly area is demarcated: the area of the pre-assembly area is not less than 1.5 times the projection area of the whole bathroom, and the straight line distance between the pre-assembly area and the reserved bathroom area is ≤5m, and there is no fixed obstacle between the two.

[0016] S12, the ground of the pre-assembly area is treated: the ground is cleaned and calibrated by using a level to ensure that the ground flatness deviation is ≤3mm; a 20mm thick anti-skid rubber pad layer is laid on the ground, and the edge of the pad layer exceeds the boundary of the pre-assembly area by at least 300mm.

[0017] S13, a unified three-dimensional reference coordinate of the pre-assembly area and the bathroom area is established.

[0018] S14, a temporary guide slide rail is installed on one side of the pre-assembly area close to the bathroom area: the length of the slide rail is ≥ the length of the whole bathroom +1m, the slide rail spacing matches the pulley assembly at the bottom of the chassis module, the top surface of the slide rail is consistent with the ground elevation of the reserved bathroom area, and the slide rail is fixed to the ground by expansion bolts.

[0019] Optionally, step S13 comprises:

[0020] S131, an X-axis (in the length direction of the bathroom) and a Y-axis (in the width direction of the bathroom) reference line are projected on the ground of the pre-assembly area by a laser line projector, and the intersection of the X-axis and the Y-axis is marked as a coordinate control point (which can also be a module corner corresponding point or a main frame axis intersection point), the horizontal deviation of the ground coordinate control point and the corresponding reference point (such as a wall corner ground projection point, a ground elevation line, an axis) in the bathroom area is ≤2mm.

[0021] S132, a Z-axis reference line is projected at the ground coordinate control point of the pre-assembly area by a laser line projector, and the Z-axis reference line corresponds to a vertical reference (such as a door frame side vertical line, a wall control line) in the bathroom area, and the projection deviation of the two in the vertical and horizontal directions is ≤2mm.

[0022] Optionally, step S2 comprises:

[0023] S21, the bottom support is arranged in place: the bottom support is hoisted to a designated position of the pre-assembly area, and the flatness of the bottom support is adjusted by a level.

[0024] S22, one end of the four columns of the main frame is respectively installed at the four corners of the bottom support to form a frame body.

[0025] S23, the bottom plate module is installed: the bottom plate module comprises a bottom plate and a shock-absorbing layer; the bottom plate is installed above the bottom support, and the shock-absorbing layer is installed below the bottom plate.

[0026] Optionally, in step S22, the columns and the bottom support are connected through L-shaped connectors.

[0027] S31, the left and right wall modules are connected and installed: two first wall modules are respectively hoisted to the corresponding positions in the frame body, the perpendicularity of the two first wall modules is calibrated, and the two first wall modules are respectively fixedly connected with the frame body in a close fit manner; meanwhile, the lower edges of the two first wall modules are respectively connected with the edges of the bottom plate module.

[0028] S32, the front wall module is connected and installed: a second wall module is hoisted to the front side of the frame body, the perpendicularity of the second wall module is calibrated, and the second wall module is fixedly connected with the frame body in a close fit manner; meanwhile, the second wall module is sealingly connected with the two first wall modules and the bottom plate module.

[0029] Optionally, step S4 comprises:

[0030] S41, the ceiling module is installed: the ceiling module is hoisted to the upper part of the frame body, and the ceiling module is fixedly connected with the columns through fasteners; during the installation, the flatness of the surface of the ceiling module is detected through a laser level, and it is ensured that the deviation is less than or equal to 2 mm.

[0031] S42, the top support is installed on the top of the plurality of columns, and a cross beam is installed between adjacent columns to form a main frame.

[0032] Optionally, in step S41, the ceiling module is sealingly connected with the wall module.

[0033] Optionally, step S5 comprises:

[0034] S51, the washing module is installed: the washing module is hoisted into the rear side of the main frame, and then the washing module is attached to the main frame; the washing module and the main frame are fixed through fasteners.

[0035] S52, a toilet bowl is installed in the main frame to form a whole bathroom, and the toilet bowl and the water inlet pipes of the washing area are communicated with the total water inlet pipe of the main frame.

[0036] S53, hoist the toilet to the reserved toilet area, adjust the levelness, and then fix the toilet to the ground embedded part through the bottom support to complete the installation.

[0037] Optionally, the top of the main frame is reserved with multiple lifting points; in step S4, the toilet is hoisted to the toilet area through the lifting points of the main frame.

[0038] (Three) beneficial effects

[0039] The beneficial effects of the present application are:

[0040] The application provides a construction method of an assembled bathroom, all module assembling (including connection of a main frame and a washing module, a bottom plate module, combination of a wall module and the bottom plate module, and pre-assembly of a room door module) can be completed in a pre-assembly area, and a bathroom area reserved on site only needs to meet the size requirement of the final whole bathroom installation, without needing to reserve an additional operation space for module hoisting, adjustment and pipeline connection. For a building scene, the method can be adapted to a limited space reserved area near a narrow corridor and an elevator room; for a train, a bullet train and other vehicles, during a production and assembly stage, a special pre-assembly area can be delimited in a workshop to complete integration of all modules, so that complex assembly in a vehicle compartment (only a narrow space for single-person operation) is avoided, and the problem of strong dependence of traditional on-site module-by-module installation on the internal space of the vehicle is solved. For a building bathroom: pre-assembly enables modules to be precisely connected (such as sealed connection of a wall module and a bottom plate module and pipeline integration) in a controlled environment, and then the whole bathroom is hoisted and fixed to the reserved area, so that on-site wet work and cross construction are reduced, even if there are obstacles such as walls and pipelines around the reserved area, the whole bathroom can be quickly positioned through overall displacement and adapted to compact spaces of various residences and hotels. For a train, a bullet train and other vehicle bathrooms: during the production and assembly process, the pre-assembly area in the workshop can be used to complete integration of the bathroom modules before the vehicle compartment enters the final assembly line. The pre-assembly ensures the module connection precision, and the whole bathroom is moved into the reserved position in the vehicle compartment by using a special hoisting tool, without the need of complicated module splicing in the vehicle compartment with installed interiors. This way not only adapts to the characteristics of the closed and compact internal space of the train and bullet train compartment, but also matches the flow line rhythm of the vehicle production, and the standardized pre-assembly process can ensure the structural stability of the bathroom under high-speed train running. The pre-assembly transfers the module connection and pipeline connection processes to an area outside or near the site, reduces the construction occupation time of the reserved area on site, at the same time, the pre-assembly area can ensure the module connection precision, avoids installation deviation caused by a narrow space on site, especially in the scene of trains, bullet trains and other vehicles with strict size tolerance requirements, which can significantly reduce quality problems such as water leakage and part loosening. Compared with the prior art, the method breaks through the limitation of the on-site space on the construction of the assembled bathroom through the pre-assembly-whole displacement mode, realizes efficient adaptation of multiple scenes from buildings to trains, bullet trains and other vehicles, and has economy and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a whole process schematic diagram of an assembled bathroom construction method according to Embodiment 2 of the application;

[0042] Figure 2 is a specific process schematic diagram of step S1 of the assembled bathroom construction method according to Embodiment 2 of the application;

[0043] Figure 3is a specific flowchart of step S13 of the construction method of the assembled bathroom of embodiment 2 of the present application;

[0044] Figure 4 is a specific flowchart of step S2 of the construction method of the assembled bathroom of embodiment 2 of the present application;

[0045] Figure 5 is a specific flowchart of step S3 of the construction method of the assembled bathroom of embodiment 2 of the present application;

[0046] Figure 6 is a specific flowchart of step S4 of the construction method of the assembled bathroom of embodiment 2 of the present application;

[0047] Figure 7 is a specific flowchart of step S5 of the construction method of the assembled bathroom of embodiment 2 of the present application. DETAILED DESCRIPTION

[0048] In order to better understand the above technical solutions, the exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided so that the present application can be more clearly, thoroughly understood and the scope of the present application can be completely conveyed to those skilled in the art.

[0049] Embodiment 1:

[0050] The present embodiment provides an assembled bathroom, which comprises a main frame, a chassis module, a suspended ceiling module, a wall module, a wash module, a room door module and a toilet module. The chassis module is installed at the bottom of the main frame, the suspended ceiling module is installed at the upper part of the main frame, the wash module is installed at the rear side of the main frame, the wall module is installed at the left and right sides and the front side of the main frame, and the room door module is installed at the front side of the main frame. The main frame comprises a bottom support, a vertical column and a top support, and the top support is supported and installed on the bottom support through the vertical column.

[0051] Embodiment 2:

[0052] As shown in Figure 1 The present embodiment provides a construction method of an assembled bathroom, which is used for the assembled bathroom described in embodiment 1, and comprises the following steps:

[0053] S1, a pre-assembly area is demarcated and set near a reserved bathroom area.

[0054] S2, a bottom support of a main frame is arranged in the pre-assembly area, and then a plurality of vertical columns of the main frame are supported on the bottom support; and a chassis module is installed on the bottom support.

[0055] S3, installing wall modules on both sides and front side of the frame body, connecting the wall modules with the chassis modules; installing a room door module on the front side of the main frame.

[0056] S4, installing a ceiling module on the upper part of the frame body; installing a top support on the top of the column, and installing a cross beam between the adjacent columns to form a main frame;

[0057] S5, installing a lavatory module on the rear side of the main frame, installing a toilet in the main frame to form a whole bathroom, and then hoisting the bathroom to the bathroom area for fixed installation.

[0058] Specifically, since the assembly of all modules (including the connection of the main frame and the washing module, the combination of the wall module and the chassis module, and even the pre-assembly of the room door module) can be completed in the pre-assembly area, the on-site reserved toilet area only needs to meet the size requirements of the final overall toilet installation, without the need to reserve additional operation space for module hoisting, adjustment, and pipeline connection. For building scenes, it can adapt to narrow corridors, elevator rooms, and other space-limited reserved areas; for trains, high-speed trains, and other vehicles, during the production and assembly stage, a special pre-assembly area can be defined in the workshop to complete the integration of all modules, avoiding complex assembly in the vehicle interior (a narrow space that can only accommodate a single person), and solving the strong dependence of traditional on-site module-by-module installation on the interior space of the vehicle. For building toilets: pre-assembly allows modules to be precisely connected in a controlled environment (such as the sealed connection of wall modules and chassis modules, and pipeline integration), and then hoisted and fixed to the reserved area, reducing on-site wet work and cross-construction. Even if there are obstacles such as walls and pipelines around the reserved area, the overall displacement can quickly position the modules, adapting to the compact space of various residential and hotel buildings. For train and high-speed train toilets: during production and assembly, the pre-assembly area in the workshop can complete the integration of the toilet modules before the vehicle enters the final assembly line. Pre-assembly ensures module connection accuracy, and the overall toilet is moved into the reserved position in the vehicle using special hoisting tools, eliminating the need for complex module assembly in the vehicle interior with installed parts. This method not only adapts to the closed and compact structure of the train and high-speed train interior, but also matches the production line rhythm of the vehicle, and the standardized pre-assembly process ensures the structural stability of the toilet during high-speed travel. Pre-assembly transfers module connection and pipeline connection processes to off-site or nearby areas, reducing the construction occupation time of the on-site reserved area. At the same time, the pre-assembly area can ensure module connection accuracy, avoiding installation deviations caused by narrow on-site spaces, especially in scenes such as trains and high-speed trains, which have strict size tolerance requirements, significantly reducing quality problems such as water leakage and component loosening. Compared with existing technologies, this method breaks through the limitations of on-site space for prefabricated toilet construction through the pre-assembly-whole displacement mode, achieving efficient adaptation from buildings to trains, high-speed trains, and other scenes, and combining economy and reliability.

[0059] Further, as shown in Figure 2 S1 comprises:

[0060] S11, according to the shape size and hoisting operation requirements of the toilet overall module, the boundary of the pre-assembly area is determined: the area of the pre-assembly area is not less than 1.5 times the projection area of the toilet overall module, and the straight-line distance between the pre-assembly area and the reserved toilet area is ≤5m; there is no fixed obstacle between them.

[0061] S12, processing the ground of the pre-assembly area: clearing the ground of debris and using a level to calibrate, ensuring that the flatness deviation of the ground is ≤3mm; laying a 20mm thick anti-skid rubber pad on the ground, on the one hand to reduce the horizontal error during module assembly (such as the inclination of the chassis module caused by uneven ground), and on the other hand to avoid damage caused by hard contact between the module and the ground during hoisting through the elastic buffer of the rubber pad; the edge of the pad exceeds the boundary of the pre-assembly area by at least 300mm.

[0062] S13, establishing a unified three-dimensional reference coordinate of the pre-assembly area and the bathroom area.

[0063] By specifying the area of the pre-assembly area (≥1.5 times the projection area), the distance from the target area (≤5m) and the requirement of no fixed obstacles, it is ensured that there is sufficient operating space during the pre-assembly process, avoiding spatial interference during module hoisting and adjustment; ground treatment can reduce settlement or sliding during module assembly, ensuring positioning accuracy; the unified three-dimensional reference coordinate provides accurate spatial reference for each module.

[0064] In the present embodiment, step S1 further comprises: S14, installing temporary guide rails on one side of the pre-assembly area close to the bathroom area: the length of the guide rail is ≥ the overall length of the bathroom + 1m, the distance between the guide rails matches the pulley assembly at the bottom of the chassis module, the top surface of the guide rail is consistent with the ground elevation of the reserved bathroom area, and the guide rail is fixed to the ground by expansion bolts. The temporary guide rails match the chassis pulleys, making the overall bathroom move more smoothly from the pre-assembly area to the target area, reducing bumps or deviations during the moving process, especially suitable for assembly scenes in train and bullet train production workshops, improving overall construction efficiency.

[0065] Further, as shown in Figure 3 , step S13 comprises:

[0066] S131, projecting X-axis (along the length direction of the bathroom) and Y-axis (along the width direction of the bathroom) reference lines on the ground of the pre-assembly area by a laser line projector, and marking the intersection of the X-axis and the Y-axis as a coordinate control point (which can also be a module corner corresponding point or a main frame axis intersection point), the horizontal deviation of the ground coordinate control point from the corresponding reference point (such as the ground projection point of the corner, the ground elevation line, the axis) in the bathroom area is ≤2mm.

[0067] S132, projecting a Z-axis reference line at the ground coordinate control point of the pre-assembly area by a laser line projector, which corresponds to the vertical reference (such as the vertical line of the door frame side, the wall control line) in the bathroom area, and the projection deviation of the two in the vertical and horizontal directions is ≤2mm.

[0068] The X and Y axis ground references established by the laser projector ensure that the horizontal coordinates of the pre-assembly area and the target area (such as the module corners and axis) completely correspond, avoiding misalignment left and right or front and back when subsequent modules are docked; the Z-axis vertical reference ensures that the perpendicularity of vertical modules such as walls and ceilings is consistent with the vertical reference of the target area, preventing tilting; the precise and unified three-dimensional coordinates enable the overall pre-assembled bathroom to have zero fitting error with the target area, significantly reducing the cost of on-site secondary adjustment, and are particularly critical in scenarios with strict tolerance requirements such as trains and high-speed trains.

[0069] Further, as shown in Figure 4 , step S2 includes:

[0070] S21, bottom support arrangement in place: hoist the bottom support to the designated position of the pre-assembly area, and adjust the flatness of the bottom support with a level.

[0071] S22, one end of the four columns of the main frame is installed at the four corners of the bottom support to form a frame body.

[0072] S23, bottom plate module installation: the bottom plate module includes a bottom plate and a shock-absorbing layer; the bottom plate is installed above the bottom support, and the shock-absorbing layer is installed below the bottom plate.

[0073] The flatness control of the bottom support ensures the stability of the reference for subsequent module installation, avoiding tilting of the overall structure; the fixation and levelness control of the overall bottom plate and the bottom support (calibrated by a level), avoiding water accumulation or poor drainage of the bottom plate. The shock-absorbing layer at the bottom of the bottom plate module can buffer vibration impact (such as bumps during train or high-speed train travel, or ground micro-vibration in construction scenarios), reduce long-term vibration wear on the connection joint between the bottom plate and the main frame, and reduce drainage noise, improving user experience.

[0074] Further, in this embodiment, in step S22, the columns and the bottom support are connected through L-shaped connectors.

[0075] Further, as shown in Figure 5 , step S3 includes:

[0076] S31, connection and installation of left and right wall modules: hoist two first wall modules to the corresponding positions inside the frame body, calibrate the perpendicularity of the two first wall modules, and fixedly connect the two first wall modules with the frame body respectively; at the same time, the lower edges of the two first wall modules are connected with the edges of the bottom plate module.

[0077] S32, connection and installation of the front wall module: hoist the second wall module to the front side of the frame body, calibrate the perpendicularity of the second wall module, and fixedly connect the second wall module with the frame body; at the same time, the second wall module is sealingly connected with the two first wall modules and the bottom plate module.

[0078] The wall module installation sequence from the first side to the front side, the first wall module forms a lateral support, provides a precise docking reference for the second wall module, and avoids position deviation during installation of the front side module; the fitting and fixing of the wall module with the frame body and the connection with the chassis enhance the overall rigidity of the wall system, save more space compared to the traditional flat opening type, and are especially suitable for narrow spaces in train and bullet train toilets.

[0079] Further, as shown in Figure 6 , step S4 includes:

[0080] S41, ceiling module installation: hoist the ceiling module into the upper part of the frame body, and fixedly connect the ceiling module with the stand column through fasteners; during installation, detect the flatness of the ceiling module surface through a laser level to ensure that the deviation is ≤2mm.

[0081] S42, install the top support on the top of the plurality of stand columns, and install a cross beam between adjacent stand columns to form a main frame.

[0082] Further, in step S41, the ceiling module is sealingly connected with the wall module.

[0083] The sealing connection of the ceiling and the wall can block the top gap, prevent water vapor from penetrating into the main frame or the ceiling from between the ceiling and the wall, protect the pipelines (such as lighting lines and ventilation pipes) in the ceiling from being damp, and at the same time reduce dust accumulation and reduce cleaning and maintenance costs.

[0084] Further, as shown in Figure 7 , step S5 includes:

[0085] S51, wash module installation: hoist the wash module into the rear side of the main frame, and then fit the wash module with the main frame; fixedly connect the wash module and the main frame through fasteners.

[0086] S52, install a toilet in the main frame to form a complete toilet, and connect the water inlet pipes of the toilet and the wash area with the main water inlet pipe of the main frame.

[0087] S53, hoist the toilet to the reserved toilet area, adjust the levelness, and then fix it through the bottom support and the ground embedded part to complete the installation.

[0088] By installing the wash module, the toilet in steps, and then hoisting and fixing the whole, the stable connection of the wash module with the wall and the chassis module, and the precise cooperation of the toilet with the pre-set pipeline interface are ensured, a complete toilet is formed, the whole is hoisted to realize rapid and accurate on-site positioning and fixing, the convenience of construction, the reliability of the connection of each part, and the stability of the overall structure of the toilet are improved.

[0089] In the embodiment, the top of the main frame is reserved with multiple lifting points; in step S4, the toilet is hoisted to the toilet area through the lifting points of the main frame. The uniform distribution of the multiple lifting points balances the force of the toilet during overall hoisting, avoiding deformation of the main frame or loosening of the module connection due to excessive force on a single point; the lifting points are pre-set on the top of the main frame, which is suitable for the hook position of the hoisting equipment, and improves the convenience and safety of hoisting operation, especially in the mechanized hoisting scene in the train and bullet train production workshop, the overall displacement path can be accurately controlled to ensure accurate docking with the reserved area of the carriage.

[0090] In the description of the present application, it should be understood that the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0091] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0092] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "under" and "under" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0093] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0094] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can modify, modify, replace and modify the above-described embodiments within the scope of the present application.

Claims

1. A construction method for a prefabricated bathroom, used in a prefabricated bathroom comprising a main frame, chassis module, ceiling module, wall module, washbasin module, and toilet, characterized in that, Including the following steps: S1. Delineate and set up a pre-assembly area near the reserved toilet area; S2. Arrange the bottom support of the main frame in the pre-assembly area, and then support the multiple columns of the main frame on the bottom support to form the main frame body; install the chassis module on the bottom support. S3. Install wall modules on the left, right and front sides inside the main frame, and connect the wall modules to the chassis module. S4. Install the ceiling module in the upper part of the main frame; install the top bracket on the top of the column, and install the crossbeam between adjacent columns to form the main frame; S5. Install the washroom module on the rear side inside the main frame, install the toilet inside the main frame to form a complete bathroom, and then hoist the bathroom to the bathroom area for fixed installation.

2. The construction method for prefabricated bathrooms as described in claim 1, characterized in that, Step S1 includes: S11. Based on the overall dimensions of the bathroom module and the requirements for hoisting operations, define the boundaries of the pre-assembly area: the area of ​​the pre-assembly area shall not be less than 1.5 times the overall projected area of ​​the bathroom, and the straight-line distance between the pre-assembly area and the bathroom area shall be ≤5m, with no fixed obstacles between them. S12. Treat the ground in the pre-assembly area: clean up debris and use a level to ensure that the flatness deviation of the ground is ≤3mm; lay an anti-slip rubber mat on the ground, with the edge of the mat extending at least 300mm beyond the boundary of the pre-assembly area. S13. Establish a unified three-dimensional reference coordinate system between the pre-assembled area and the toilet area.

3. The construction method for prefabricated toilets as described in claim 2, characterized in that, Step S13 includes: S131. Project the X-axis and Y-axis using a laser line projector, mark the intersection of the X-axis and Y-axis as the coordinate control point, and the deviation between the coordinate control point and the corresponding reference point in the bathroom area is ≤2mm; S132. Project the Z-axis baseline at the ground coordinate control point of the pre-assembly area using a laser line projector. The Z-axis baseline corresponds to the vertical baseline in the bathroom area, and the projection deviation between the two in the vertical and horizontal directions is ≤2mm.

4. The construction method for prefabricated bathrooms as described in claim 1, characterized in that, Step S2 includes: S21. Base support placement: Hoist the base support to the designated position in the pre-assembly area and adjust the flatness of the base support using a level. S22. Install one end of each of the four columns of the main frame at the four corners of the base bracket to form the main frame body; S23. Chassis module installation: The chassis module includes a base plate and a shock-absorbing layer; the base plate is installed on top of the base bracket, and the shock-absorbing layer is installed below the base plate.

5. The construction method for prefabricated bathrooms as described in claim 4, characterized in that, In step S22, the column and the base support are connected by an L-shaped connector.

6. The construction method for prefabricated bathrooms as described in claim 1, characterized in that, Step S3 includes: S31. Connection and installation of the wall modules on the left and right sides: Hoist the two first wall modules into the corresponding positions inside the frame body, calibrate the verticality of the two first wall modules, and fix the two first wall modules to the frame body; at the same time, the lower edges of the two first wall modules are connected to the edges of the chassis module. S32. Connection and installation of the front wall module: Hoist the second wall module to the front of the frame body, calibrate the verticality of the second wall module, and fix the second wall module to the frame body; at the same time, the second wall module seals and connects the two first wall modules and the chassis module.

7. The construction method for prefabricated bathrooms as described in claim 1, characterized in that, Step S4 includes: S41. Hoist the ceiling module to the upper part of the main frame and fix the ceiling module to the column with fasteners; during the installation process, use a laser level to check the flatness of the ceiling module surface; S42. Install the top bracket on the top of multiple columns, and install crossbeams between adjacent columns to form the main frame.

8. The construction method for prefabricated bathrooms as described in claim 7, characterized in that, In step S41, the ceiling module and the wall module are sealed together. S42. Complete installation of the bathroom: The bathroom unit is hoisted to the bathroom area for fixed installation.

9. The construction method for prefabricated bathrooms as described in claim 1, characterized in that, Step S5 includes: S51. Washroom module installation: Hoist the washroom module into the rear of the main frame, and then attach the washroom module to the main frame; fix the washroom module and the main frame with fasteners; S52. Install a toilet inside the main frame to form a complete bathroom, and connect the water inlet pipes of the toilet and wash area to the main water inlet pipe of the main frame. S53. Hoist the toilet into the reserved toilet area, adjust the level, and fix it to the ground embedded parts through the base bracket to complete the installation.

10. The construction method for prefabricated toilets as described in claim 1, characterized in that, The top of the main frame has multiple hanging points; In step S4, the bathroom unit is hoisted to the bathroom area using the hoisting points of the main frame.

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