Prefabricated concrete toilet chassis, manufacturing method and installation method

Abstract

The invention discloses a prefabricated concrete toilet chassis, a manufacturing method and an installation method. The toilet chassis comprises a concrete caisson and a water-stop steel plate counter-slope; the upper end of the side wall of the concrete caisson is reserved with exposed steel bars in the horizontal direction; a circle of water-stop steel plate counter-slope is arranged on the upper end of the concrete caisson; a prefabricated water supply and drainage system and a prefabricated power supply system are arranged in the concrete caisson, and a reserved drainage interface and a reserved wire interface are extended from the concrete caisson, and a decorative surface layer is paved. Compared with the traditional integral prefabricated toilet, the overall weight is greatly reduced, and the lifting weight requirement for the tower crane is reduced. The emerging assembly meets the market demand, and the processes of component manufacturing, water testing, water and electricity reservation and embedding, waterproofing and decorative surface layer are completed in the factory, reducing on-site wet operations and decoration and renovation processes, and only connection is needed. At the same time, production inspection and batch production are carried out in the factory, which is conducive to accelerating the progress of the project and realizing industrialized quality control.

Description

[Technical field]

[0001] The invention relates to the field of construction engineering, and in particular to a prefabricated concrete toilet chassis, a manufacturing method and an installation method. [Background technology]

[0002] The most concerned issue regarding the quality of construction projects is residential leakage. Currently, leakage problems often occur in construction projects, which not only affect the normal use of buildings, but also have an impact on the long-term life of buildings and pose hidden dangers.

[0003] The most common leakage problems are leakage in the bathroom and leakage around the exterior windows, which are also the key inspection areas for completion and delivery to the owner. Most bathroom leakage is caused by quality problems during the concrete construction phase and loose hanging holes in the pipe holes. Once the main concrete structure is completed, it cannot be removed. Most of the time, it is compensated by later defect repair and plugging, which cannot fundamentally solve the leakage problem in the bathroom.

[0004] In response to the above problems, fully prefabricated concrete bathroom structures are generally used now, but there are very few application projects due to their disadvantages, namely, heavy weight, large size, high transportation cost, and difficulty in protecting the finished product. In actual on-site construction, large-scale lifting and hoisting equipment are also required to assist in the hoisting of the entire prefabricated bathroom. A low-weight, easy-to-install prefabricated concrete bathroom chassis is needed on the market. [Summary of the invention]

[0005] In order to solve the above problems, a prefabricated concrete toilet chassis, a manufacturing method and an installation method are proposed;

[0006] A prefabricated concrete toilet chassis, the toilet chassis comprising a concrete caisson and a water-stop steel plate countersill;

[0007] The concrete caisson is a rectangular box surrounded by a bottom plate and side walls;

[0008] Two layers of horizontal steel bar construction surfaces are arranged in the bottom plate of the concrete caisson; the two layers of horizontal steel bar construction surfaces are both formed by steel bars tied to each other in the longitudinal and transverse directions, presenting a grid-staggered shape, and both extend out of the concrete caisson to reserve exposed steel bars;

[0009] The upper end of the side wall of the concrete caisson is reserved with exposed steel bars in the horizontal direction;

[0010] A circle of water-stop steel plate counter-ridge is provided at the upper end of the concrete caisson;

[0011] The inner side of the anti-ridge of the water-stop steel plate is provided with water supply and drainage pipes and electric wire pipes;

[0012] The concrete caisson is provided with a prefabricated water supply and drainage system and a prefabricated power supply system, and a reserved drainage interface and a reserved wire interface are extended from the concrete caisson;

[0013] The cavity formed between the concrete caisson and the anti-slope of the water-stop steel plate is backfilled with lightweight materials and a concrete panel is cast, and a decorative surface layer is laid on the cast concrete panel.

[0014] Furthermore, the water supply and drainage system includes a domestic water supply system and a sewage discharge system.

[0015] Furthermore, the domestic water supply system is composed of a household water supply pipe, one end of which is arranged along the concrete caisson, and a plurality of supply branch pipes are arranged upward, the supply branch pipes extend from the drainage pipe, and the other end of the household water supply pipe extends from the upper end of the concrete caisson to form a reserved water supply interface.

[0016] Furthermore, the sewage discharge system includes a sewage main pipe, one end of which is arranged in a concrete caisson and has a plurality of sewage branch pipes arranged upward, and the other end of the sewage main pipe extends out from the concrete caisson to form a prefabricated drainage interface.

[0017] Furthermore, the prefabricated power supply system includes reserved wire pipes, wire boxes, and wires;

[0018] The reserved wire pipe is arranged in the concrete caisson, and a plurality of reserved wires are separated in parallel and extended out of the wire pipe and a wire connection port is reserved;

[0019] The wire box is arranged on the outer surface of the concrete caisson, and the wires are pre-threaded into the wire tube, and a wiring port is reserved.

[0020] Furthermore, two layers of horizontal steel bar construction surfaces are provided in the bottom plate of the concrete caisson, the reserved exposed steel bars extending outwards of the lower layer extend outwards horizontally, and the reserved exposed steel bars extending outwards of the upper layer extend outwards horizontally and then turn to extend in a vertical direction after reaching the exposed steel bars extending outwards of the lower layer.

[0021] Furthermore, the surface for pouring concrete is an inclined surface.

[0022] The production method of precast concrete toilet chassis, the following steps:

[0023] A) Provide the mold factory with a steel mold according to the size requirements of the precast concrete toilet chassis drawing, use this steel mold as the precast concrete toilet chassis template to tie the bottom and surrounding steel bars of the concrete caisson to form a steel mesh, and fix the water-stop steel plate to the caisson steel mesh to form a counter-ridge, and then preset the water supply and drainage pipes and wire pipes on the counter-ridge of the water-stop steel plate;

[0024] Two layers of horizontal steel bar construction surfaces are built at the bottom of the concrete caisson. Both layers of horizontal steel bar construction surfaces are composed of steel bars tied together in the vertical and horizontal directions, presenting a grid-like staggered shape, forming bottom steel bars, and reserving exposed steel bars;

[0025] The surrounding steel bars are built upward on the basis of the bottom steel bars to form the side wall steel bars, and exposed steel bars are reserved;

[0026] B) After the steel mesh constructed in step A) is turned upside down, a casting template is installed around the steel mesh, and then concrete is cast as a whole in the casting cavity formed between the casting template and the steel mold while retaining the exposed steel bars reserved in step A), so as to form a base form of the concrete caisson;

[0027] C) After the concrete caisson and the water-stop steel plate anti-ridge cast in step A) and step B) are solidified, remove them from the steel mold and the casting template, turn over the caisson, and lay the prefabricated water supply and drainage system and the prefabricated power supply system according to the layout requirements. First, fix the household water supply pipe, the sewage main pipe and the reserved wire pipe into the concrete caisson. The household water supply pipe is provided with a plurality of supply branch pipes upward, and the supply branch pipes extend from the drainage pipe. The other end of the household water supply pipe extends from the upper end of the concrete caisson to form a reserved water supply interface. The sewage main pipe is provided with a plurality of sewage branch pipes upward, and the other end of the sewage main pipe extends from the concrete caisson to form a prefabricated drainage interface; the reserved wire pipe is arranged in the concrete caisson, and a plurality of reserved wires are divided in parallel and extend out of the wire pipe and a wire connection port is reserved; the wire box is arranged on the outer surface of the concrete caisson, and the wires are pre-threaded in the wire pipe to reserve a connection port;

[0028] D) After completing step C), without covering the reserved pipes and interfaces of step C), backfill the cavity formed between the concrete caisson and the anti-slope of the water-stop steel plate with lightweight materials and cast a concrete panel, wherein the cast concrete panel presents an inclined surface of 0.1°-0.5°, inclined toward one of the sewage branch pipes, to facilitate water flow guidance;

[0029] E) After the poured concrete in step D) solidifies, a decorative surface layer is laid on the concrete panel. The paving in this step is also carried out without covering the reserved pipes and interfaces in step C);

[0030] F) After completion, a water test is carried out. After the test is completed, the production of the precast concrete toilet low plate is completed.

[0031] Installation method of precast concrete toilet chassis, the following steps:

[0032] a) During the construction of the first floor, tie the first floor wall column reinforcement upwards, then install the wall columns, beam and slab formwork, set up the prefabricated bathroom chassis support system, and adjust the elevation;

[0033] b) Place the prefabricated toilet chassis on the first-layer installation position through a tower crane, install the steel casing on the prefabricated drainage interface of the prefabricated toilet chassis, install the aluminum film K plate, and tie the exposed steel bars of the prefabricated toilet chassis to the steel bars on the first-layer installation position;

[0034] c) Connect the reserved wire interface with the external power supply through concealed pipeline;

[0035] d) Pour concrete into the formwork and casing formwork to install the prefabricated toilet chassis into the first floor;

[0036] e) After the concrete solidifies, the installation of the prefabricated toilet chassis on the first floor is completed;

[0037] f) On the basis of the prefabricated toilet on the upper floor, tie the wall column reinforcement upwards;

[0038] g) After completing the binding of the wall column reinforcement in step f), install the formwork and wall column formwork, and at the same time build a support system with the upper layer as the base plate;

[0039] h) After the formwork and wall column formwork installed in step g), build the beam slab and tie the bottom reinforcement of the beam slab;

[0040] i) Hoist the prefabricated toilet chassis onto the beam slab;

[0041] j) Install steel casing on the prefabricated drainage interface of the prefabricated toilet;

[0042] k) Install the casing template at step j) of the prefabricated bathroom chassis;

[0043] l) Tie the steel bars on the upper part of the beam and slab and the exposed steel bars;

[0044] n) Connect the reserved wire interface with the external power supply through concealed pipeline;

[0045] m) Pour concrete into the casing formwork, formwork and wall column formwork, that is, pour the prefabricated toilet installation floor and the wall columns between the upper layer at the same time, so that the prefabricated toilet chassis is installed in this floor;

[0046] o) After pouring, wait for the concrete to solidify, remove the casing formwork, formwork and wall column formwork, and after 20 to 30 days, remove the support system to complete the installation of the bathroom chassis on this floor;

[0047] p) Repeat steps f) to o) multiple times according to the required number of floors until the required floors are completed;

[0048] q) Install an external wall drainage riser on the wall surface corresponding to the prefabricated drainage interface, and connect it to the prefabricated drainage interface of each floor in turn to complete the connection of sewage discharge;

[0049] r) Install ALC wall panels and bathroom door panels on the prefabricated bathroom chassis on each floor;

[0050] s) Connect the reserved water supply interface of the domestic water supply system provided on the prefabricated toilet chassis with the ground water supply pipeline to complete the connection of the domestic water supply system;

[0051] t) Connect the supply branch pipes in the prefabricated toilet chassis to the corresponding functions to complete the internal water supply connection work;

[0052] u) Check whether the domestic water supply system and the power supply system are working properly. If the inspection is normal, the installation of the precast concrete bathroom chassis is completed.

[0053] The patent of this invention has the following advantages:

[0054] 1. Compared with the traditional integral prefabricated toilet, the overall weight of the present invention is greatly reduced, and the lifting weight requirement for the tower crane is reduced. The emerging assembly meets the market demand. The construction party does not need to increase the budget of the tower crane to install the prefabricated toilet. Only conventional lifting equipment can be used to complete the installation work, which reduces the construction cost expenditure;

[0055] 2. Compared with traditional cast-in-place construction, the present invention reduces the on-site operation process, only needs to cooperate with the aluminum formwork construction, and reduces the hanging formwork construction and waterproof anti-slope construction at the aluminum formwork lowering position, solves the pain point of leakage in traditional cast-in-place construction, and simplifies the installation and disassembly of the aluminum formwork on the construction site;

[0056] 3. The waterproof construction of the present invention is completed in the factory, and the water test is directly carried out after completion. After the test is no problem, it is sent to the construction site for installation, which reduces the steps of wet work on the construction site and saves the total time of the later water test. At the same time, production inspection and batch production are carried out in the factory, which is conducive to speeding up the progress of the project and realizing industrialized quality control;

[0057] 4. The water supply and drainage pipes and power supply line pipes of the present invention are laid in advance in the factory, and the ground decoration surface is also laid. Only connection is needed at the construction site, which reduces the workload on the construction site and reduces the later wet work.

Brief Description of the Drawings

[0058] Figure 1 This is a schematic diagram of the overall results of Example 1 of the present invention;

[0059] Figure 2 This is a schematic diagram of the internal structure of Embodiment 1 of the present invention;

[0060] Figure 3 It is a structural schematic diagram of a concrete caisson according to Embodiment 1 of the present invention;

[0061] Figure 4 This is a schematic diagram of step f) of embodiment 3 of the present invention after the steel bar wall column is set;

[0062] Figure 5 This is a schematic diagram of the structure of installing the template and the wall column template in step g) of embodiment 3 of the present invention;

[0063] Figure 6 This is a schematic diagram of tying the steel bars at the bottom of the beam and slab in step h) of Example 3 of the present invention;

[0064] Figure 7 This is a schematic diagram of the toilet chassis hoisting in step i) of embodiment 3 of the present invention;

[0065] Figure 8 This is a schematic diagram of steel casing installation in step j) of Example 3 of the present invention;

[0066] Fig. 9 This is a schematic diagram of installing the template at the casing in step k) of embodiment 3 of the present invention;

[0067] Fig.10 This is a schematic diagram of step 1) tying the upper reinforcement bars of the beam and slab in Example 3 of the present invention;

[0068] Fig.11 This is a schematic diagram of the step n) of Example 3 of the present invention being connected to a concealed pipeline;

[0069] Fig.12 This is a schematic diagram of step m) after concrete pouring in Example 3 of the present invention;

[0070] Fig.13 This is a schematic diagram of step o) of embodiment 3 of the present invention after the formwork, wall column formwork and sleeve formwork are removed;

[0071] Fig.14 This is a schematic diagram of dismantling the support system in step o) of Example 3 of the present invention;

[0072] Fig.15 This is a schematic diagram of setting a drainage riser on the outer wall in step q) of Example 3 of the present invention;

[0073] Fig.16 This is a schematic diagram of the installation of ALC wall panels and door panels in step r) of Example 3 of the present invention;

[0074] Fig.17 Step s) of Example 3 of the present invention is ground water supply pipeline connection;

[0075] Fig.18 It is a schematic plan view of a concrete caisson and a water-stop steel plate counter-sill according to Example 2 of the present invention;

[0076] Fig.19 Attached to Example 2 of the present invention Fig.18 The cross-sectional view at DD;

[0077] Fig. 20 Attached to Example 2 of the present invention Fig.18 Cross-sectional view at GG.

[0078] Among them, 1-concrete caisson, 2-waterstop steel plate counter-slope, 1a-bottom plate, 1b-side wall, 3-exposed steel bars, 4-drainage pipe, 5-electrical wire pipe, 6-prefabricated water supply and drainage system, 7-prefabricated power supply system, 8-reserved drainage interface, 9-reserved wire interface, 10-decorative surface layer, 11-prefabricated drainage interface, 12-steel casing, 13-formwork, 14-casing template, 15-wall column template, 16-external power supply, 17-support system, 18-drainage riser, 19-ALC wall panel, 20-bathroom door panel and 21-ground water supply pipe. [Specific implementation method]

[0079] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0080] Embodiment 1:

[0081] A prefabricated concrete toilet chassis, the toilet chassis comprising a concrete caisson and a water-stop steel plate countersill;

[0082] The concrete caisson is a rectangular box surrounded by a bottom plate and side walls;

[0083] In this embodiment, the length, width and height of the concrete caisson are 1612mm*2706mm*350mm; the side wall thickness is 75mm; the bottom plate thickness is 120mm;

[0084] Two layers of horizontal steel bar construction surfaces are arranged in the bottom plate of the concrete caisson; the two layers of horizontal steel bar construction surfaces are both composed of steel bars tied together in the longitudinal and transverse directions, presenting a grid staggered shape, and both extend out of the concrete caisson to reserve exposed steel bars, and the size of the exposed steel bars provided here is 10@200;

[0085] The upper end of the side wall of the concrete caisson is reserved for exposed steel bars in the horizontal direction, and the size of the exposed steel bars provided here is 6@150;

[0086] A circle of water-stop steel plate anti-ridge is provided at the upper end of the concrete caisson, and the height of the water-stop steel plate anti-ridge is 200mm;

[0087] Two layers of horizontal steel bar construction surfaces are arranged in the bottom plate of the concrete caisson, the reserved exposed steel bars extending outwards of the lower layer extend outwards horizontally, and the reserved exposed steel bars extending outwards of the upper layer extend outwards horizontally and then turn to extend in a vertical direction to the position where the exposed steel bars of the lower layer extend outwards;

[0088] The inner side of the anti-ridge of the water-stop steel plate is provided with water supply and drainage pipes and electric wire pipes;

[0089] The concrete caisson is provided with a prefabricated water supply and drainage system and a prefabricated power supply system, and a reserved drainage interface and a reserved wire interface are extended from the concrete caisson;

[0090] The water supply and drainage system includes a domestic water supply system and a sewage discharge system;

[0091] The domestic water supply system is composed of a household water supply pipe, one end of which is arranged along the concrete caisson, and a plurality of supply branch pipes are arranged upward, the supply branch pipes extend from the drainage pipe, and the other end of the household water supply pipe extends from the upper end of the concrete caisson to form a reserved water supply interface;

[0092] The sewage discharge system includes a sewage main pipe, one end of which is arranged in a concrete caisson, and a plurality of sewage branch pipes are arranged upward, and the other end of the sewage main pipe extends out of the concrete caisson to form a prefabricated drainage interface;

[0093] In this embodiment, the pipes used in the domestic water supply system and the sewage discharge system are lightweight PPR pipes and U-PVC pipes;

[0094] The prefabricated power supply system includes reserved wire pipes, wire boxes, and wires;

[0095] The reserved wire pipe is arranged in the concrete caisson, and a plurality of reserved wires are separated in parallel and extended out of the wire pipe and a wire connection port is reserved;

[0096] The wire box is arranged on the outer surface of the concrete caisson, and the wires are pre-threaded into the wire tube, and a wiring port is reserved.

[0097] The cavity formed between the concrete caisson and the anti-slope of the water-stop steel plate is backfilled with lightweight materials and a concrete panel is cast, and a decorative surface layer is laid on the cast concrete panel; the cast concrete surface is an inclined surface.

[0098] In this embodiment, the total amount of concrete used is 0.75 tons. The weight of all steel bars, the internal preset domestic water supply system, the sewage discharge system and the prefabricated power supply system are calculated to obtain the overall weight, that is, the weight of the prefabricated concrete toilet chassis is 1.875 tons;

[0099] When lifting, a conventional tower crane can be used for installation. In this embodiment, a TC7020 tower crane is used;

[0100] Example 2

[0101] The length, width and height of the concrete caisson of the prefabricated concrete toilet chassis produced in this embodiment are 1612mm*2706mm*350mm; the side wall thickness is 75mm; the bottom plate thickness is 120mm;

[0102] The method for making a precast concrete toilet chassis is shown in the following steps:

[0103] A) The mold factory makes a steel mold according to the size requirements of the precast concrete toilet chassis drawing, that is, the steel mold is a box-shaped structure of 1464mm*2537*230mm; then use this steel mold as the precast concrete toilet chassis template to tie the bottom and surrounding steel bars of the concrete caisson to form a steel mesh, and fix the water-stop steel plate to the caisson steel mesh to form a counter-slope, and then preset the water supply and drainage pipes and wire pipes on the counter-slope of the water-stop steel plate;

[0104] Two layers of horizontal steel bar construction surfaces are built at the bottom of the concrete caisson. Both layers of horizontal steel bar construction surfaces are composed of steel bars tied together in the vertical and horizontal directions, presenting a grid-like staggered shape to form the bottom steel bars, and 10@200 size exposed steel bars are reserved;

[0105] The surrounding steel bars are built upward on the basis of the bottom steel bars to form the side wall steel bars, and exposed steel bars with a size of 6@150 are reserved;

[0106] B) After the steel mesh constructed in step A) is turned upside down, a casting template is installed around the steel mesh, and the length, width and height of the casting template are 1612mm*2706mm*350mm; then, in the casting cavity formed between the casting template and the steel mold, concrete is cast as a whole under the premise of retaining the exposed steel bars reserved in step A) to form the base form of the concrete caisson. The structure formed is as follows Fig.18 , Fig.19 and Fig. 20 As shown;

[0107] C) After the concrete caisson and the water-stop steel plate anti-ridge cast in step A) and step B) are solidified, remove them from the steel mold and the casting template, turn over the caisson, and lay the prefabricated water supply and drainage system and the prefabricated power supply system according to the layout requirements. First, fix the household water supply pipe, the sewage main pipe and the reserved wire pipe into the concrete caisson. The household water supply pipe is provided with a plurality of supply branch pipes upward, and the supply branch pipes extend from the drainage pipe. The other end of the household water supply pipe extends from the upper end of the concrete caisson to form a reserved water supply interface. The sewage main pipe is provided with a plurality of sewage branch pipes upward, and the other end of the sewage main pipe extends from the concrete caisson to form a prefabricated drainage interface; the reserved wire pipe is arranged in the concrete caisson, and a plurality of reserved wires are divided in parallel and extend out of the wire pipe and a wire connection port is reserved; the wire box is arranged on the outer surface of the concrete caisson, and the wires are pre-threaded in the wire pipe to reserve a connection port;

[0108] D) After completing step C), without covering the reserved pipes and interfaces of step C), backfill the cavity formed between the concrete caisson and the anti-slope of the water-stop steel plate with lightweight materials and cast a concrete panel, wherein the cast concrete panel presents an inclined surface of 0.1°-0.5°, inclined toward one of the sewage branch pipes, to facilitate water flow guidance;

[0109] E) After the poured concrete in step D) solidifies, a decorative surface layer is laid on the concrete panel. The paving in this step is also carried out without covering the reserved pipes and interfaces in step C);

[0110] F) After completion, a water test is carried out. After the test is completed, the production of the precast concrete toilet low plate is completed.

[0111] Example 3

[0112] The length, width and height of the concrete caisson in this embodiment are 1612mm*2706mm*350mm; the side wall thickness is 75mm; the bottom plate thickness is 120mm; the overall weight is 1.875 tons, and the TC7020 tower crane is used for lifting and installation; the template, casing template and wall column template are all made of aluminum alloy;

[0113] The installation method of the precast concrete toilet chassis is shown in the following steps:

[0114] a) Tie the first layer of wall column reinforcement upwards during the first layer construction. In this embodiment, the height of the wall column reinforcement is 2950mm. Then install the wall column, beam and slab formwork, set up the prefabricated bathroom chassis support system, and adjust the elevation;

[0115] b) Place the prefabricated toilet chassis on the first-floor installation position through the TC7020 tower crane, install the steel casing on the prefabricated drainage interface of the prefabricated toilet chassis, install the casing template, and tie the exposed steel bars of the prefabricated toilet chassis to the steel bars on the first-floor installation position;

[0116] c) Connect the reserved wire interface with the external power supply through concealed pipeline;

[0117] d) Pour concrete into the formwork and casing formwork to install the prefabricated toilet chassis into the first floor;

[0118] e) After the concrete solidifies, the installation of the prefabricated toilet chassis on the first floor is completed;

[0119] f) On the basis of the prefabricated toilet on the upper floor, tie the wall column reinforcement upwards;

[0120] g) After completing the binding of the wall column reinforcement in step f), install the formwork and wall column formwork, and at the same time build a support system with the upper layer as the base plate;

[0121] h) After the formwork and wall column formwork installed in step g), build the beam slab and tie the bottom reinforcement of the beam slab;

[0122] i) Use TC7020 tower crane to hoist the prefabricated toilet chassis onto the beam plate;

[0123] j) Install steel casing on the prefabricated drainage interface of the prefabricated toilet;

[0124] k) Install the casing template at step j) of the prefabricated bathroom chassis;

[0125] l) Tie the steel bars on the upper part of the beam and slab and the exposed steel bars;

[0126] n) Connect the reserved wire interface with the external power supply through concealed pipeline;

[0127] m) Pour concrete into the casing formwork, formwork and wall column formwork, that is, pour the prefabricated toilet installation floor and the wall columns between the upper layer at the same time, so that the prefabricated toilet chassis is installed in this floor;

[0128] o) After pouring, wait for the concrete to solidify, remove the casing formwork, formwork and wall column formwork, and after 20 to 30 days, remove the support system to complete the installation of the bathroom chassis on this floor;

[0129] p) Repeat steps f) to o) multiple times according to the required number of floors until the required floors are completed;

[0130] q) Install an external wall drainage riser on the wall surface corresponding to the prefabricated drainage interface, and connect it to the prefabricated drainage interface of each floor in turn to complete the connection of sewage discharge;

[0131] r) Install ALC wall panels and bathroom door panels on the prefabricated bathroom chassis on each floor;

[0132] s) Connect the reserved water supply interface of the domestic water supply system provided on the prefabricated toilet chassis with the ground water supply pipeline to complete the connection of the domestic water supply system;

[0133] t) Connect the supply branch pipes in the prefabricated toilet chassis to the corresponding functions, install valves, etc., and complete the internal water supply connection work;

[0134] u) Check whether the domestic water supply system and the power supply system are working properly. If the inspection is normal, the installation of the precast concrete bathroom chassis is completed.

[0135] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A prefabricated concrete toilet chassis, characterized in that: The toilet chassis includes a concrete caisson and a water-stop steel plate countersill; The concrete caisson is a rectangular box surrounded by a bottom plate and side walls; Two layers of horizontal steel bar construction surfaces are arranged in the bottom plate of the concrete caisson; the two layers of horizontal steel bar construction surfaces are both formed by steel bars tied to each other in the longitudinal and transverse directions, presenting a grid-staggered shape, and both extend out of the concrete caisson to reserve exposed steel bars; The upper end of the side wall of the concrete caisson is reserved with exposed steel bars in the horizontal direction; A circle of water-stop steel plate counter-ridge is provided at the upper end of the concrete caisson; The inner side of the anti-ridge of the water-stop steel plate is provided with water supply and drainage pipes and electric wire pipes; The concrete caisson is provided with a prefabricated water supply and drainage system and a prefabricated power supply system, and a reserved drainage interface and a reserved wire interface are extended from the concrete caisson; The cavity formed between the concrete caisson and the anti-slope of the water-stop steel plate is backfilled with lightweight materials and a concrete panel is cast, and a decorative surface layer is laid on the cast concrete panel; The prefabricated water supply and drainage system includes a domestic water supply system and a sewage discharge system; The domestic water supply system is composed of a household water supply pipe, one end of which is arranged along the concrete caisson, and a plurality of supply branch pipes are arranged upward, the supply branch pipes extend from the drainage pipe, and the other end of the household water supply pipe extends from the upper end of the concrete caisson to form a reserved water supply interface; The sewage discharge system includes a sewage main pipe, one end of which is arranged in a concrete caisson, and a plurality of sewage branch pipes are arranged upward, and the other end of the sewage main pipe extends out of the concrete caisson to form a prefabricated drainage interface; The prefabricated power supply system includes reserved wire pipes, wire boxes, and wires; The reserved wire pipe is arranged in the concrete caisson, and a plurality of reserved wires are separated in parallel and extended out of the wire pipe and a wire connection port is reserved; The wire box is arranged on the outer surface of the concrete caisson, and the wires are pre-threaded into the wire tube, and a wiring port is reserved; The surface for pouring concrete is an inclined surface.

2. A prefabricated concrete toilet chassis according to claim 1, characterized in that: Two layers of horizontal steel bar construction surfaces are arranged in the bottom plate of the concrete caisson, the reserved exposed steel bars extending outwards of the lower layer extend outwards horizontally, and the reserved exposed steel bars extending outwards of the upper layer extend outwards horizontally and then turn to extend in a vertical direction to the position where the exposed steel bars of the lower layer extend outwards.

3. The method for making a prefabricated concrete toilet chassis is characterized by: Follow these steps: A) Provide the mold factory with a steel mold according to the size requirements of the precast concrete toilet chassis drawing. Use this steel mold as the precast concrete toilet chassis template to tie the bottom and surrounding steel bars of the concrete caisson to form a steel mesh, and fix the water-stop steel plate to the caisson steel mesh to form a counter-ridge, and then preset the water supply and drainage pipes and wire pipes on the counter-ridge of the water-stop steel plate; Two layers of horizontal steel bar construction surfaces are built at the bottom of the concrete caisson. Both layers of horizontal steel bar construction surfaces are composed of steel bars tied together in the vertical and horizontal directions, presenting a grid-like staggered shape, forming bottom steel bars, and reserving exposed steel bars; The surrounding steel bars are built upward on the basis of the bottom steel bars to form the side wall steel bars, and exposed steel bars are reserved; B) After the steel mesh constructed in step A) is turned upside down, a casting template is installed around the steel mesh, and then concrete is cast as a whole in the casting cavity formed between the casting template and the steel mold, while retaining the exposed steel bars reserved in step A), to form the base of the concrete caisson; C) After the concrete caisson and the water-stop steel plate anti-ridge cast in step A) and step B) are solidified, they are removed from the steel mold and the casting template, the caisson is turned over, and the prefabricated water supply and drainage system and the prefabricated power supply system are laid according to the layout requirements. The household water supply pipe, the sewage main pipe and the reserved wire pipe are first fixed to the concrete caisson. The household water supply pipe is provided with a plurality of supply branch pipes upward, and the supply branch pipes extend from the drainage pipe. The other end of the household water supply pipe extends from the upper end of the concrete caisson to form a reserved water supply interface. The sewage main pipe is provided with a plurality of sewage branch pipes upward, and the other end of the sewage main pipe extends from the concrete caisson to form a prefabricated drainage interface; the reserved wire pipe is arranged in the concrete caisson, and a plurality of reserved wires are divided in parallel and extend out of the wire pipe and a wire connection port is reserved; the wire box is arranged on the outer surface of the concrete caisson, and the wires are pre-threaded in the wire pipe to reserve a connection port; D) After completing step C), without covering the reserved pipes and interfaces of step C), fill the cavity formed between the concrete caisson and the anti-slope of the water-stop steel plate with lightweight materials and cast a concrete panel, wherein the cast concrete panel presents an inclined surface of 0.1°-0.5°, tilted toward one of the sewage branch pipes, to facilitate water flow guidance; E) After the poured concrete in step D) solidifies, the decorative surface layer is laid on the concrete panel. The paving in this step is also carried out without covering the reserved pipes and interfaces in step C); F) After completion, a water test is carried out. After the test is completed, the production of the precast concrete bathroom chassis is completed.

4. The installation method of the prefabricated concrete toilet chassis is characterized by: Follow these steps: a) During the construction of the first floor, tie the first floor wall column reinforcement upwards, then install the wall columns, beam and slab formwork, set up the prefabricated bathroom chassis support system, and adjust the elevation; b) Place the prefabricated toilet chassis on the first-floor installation position through a tower crane, install the steel casing on the prefabricated drainage interface of the prefabricated toilet chassis, install the aluminum film K plate, and tie the exposed steel bars of the prefabricated toilet chassis to the steel bars on the first-floor installation position; c) Connect the reserved wire interface with the external power supply through concealed pipeline; d) Pour concrete into the formwork and casing formwork to install the prefabricated toilet chassis into the first floor; e) After the concrete solidifies, the installation of the prefabricated toilet chassis on the first floor is completed; f) On the basis of the prefabricated bathroom on the upper floor, tie the wall column reinforcement upwards; g) After completing the binding of the wall column reinforcement in step f), install the formwork and wall column formwork, and build a support system with the upper layer as the base plate; h) After the formwork and wall column formwork installed in step g), build the beam slab and tie the bottom reinforcement of the beam slab; i) Hoist the prefabricated toilet chassis onto the beam slab; j) Install steel casing on the prefabricated drainage interface of the prefabricated toilet; k) Install the casing template at step j) of the prefabricated bathroom chassis; l) Tie the steel bars on the upper part of the beam and slab and the exposed steel bars; n) Connect the reserved wire interface with the external power supply through concealed pipeline; m) Pour concrete into the casing formwork, formwork and wall column formwork, that is, pour the prefabricated toilet installation floor and the wall columns between the upper floor at the same time, so that the prefabricated toilet chassis is installed in this floor; o) After pouring, wait for the concrete to solidify, remove the casing formwork, formwork and wall column formwork, and after 20 to 30 days, remove the support system to complete the installation of the bathroom chassis on this floor; p) Repeat steps f) to o) multiple times according to the required number of floors until the required floors are completed; q) Install external wall drainage risers on the wall surface corresponding to the prefabricated drainage interface, and connect them to the prefabricated drainage interfaces of each floor in turn to complete the connection of sewage discharge; r) Install ALC wall panels and bathroom door panels on the prefabricated bathroom chassis on each floor; s) Connect the reserved water supply interface of the domestic water supply system on the prefabricated toilet chassis with the ground water supply pipeline to complete the connection of the domestic water supply system; t) Connect the supply branch pipes in the prefabricated toilet chassis to the corresponding functions to complete the internal water supply connection work; u) Check whether the domestic water supply system and the power supply system are working properly. If the inspection is normal, the installation of the precast concrete bathroom chassis is completed.

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