An interlocked self-supporting box and a construction method thereof

Abstract

This invention discloses an interlocking self-supporting box and its construction method, comprising: a box body; two first mating parts, each disposed on a parallel vertical sidewall of the box body; and two second mating parts, each disposed on a parallel vertical sidewall of the box body. This invention features a simple structure. By alternately arranging two first mating parts and two second mating parts on the four vertical sidewalls of each box body, an alternating complementary structure is formed in the circumferential direction. Without the need for additional inserts or complex locking mechanisms, rapid interlocking between adjacent boxes can be achieved solely through the simple structure of the box body. This avoids the problems of high mold development costs and stringent molding precision requirements caused by complex structures, effectively reduces product scrap rates, and achieves a balance between low cost and efficient interlocking.

Description

Technical Field

[0001] This invention relates to the field of hollow core slab construction technology, specifically an interlocking self-supporting box and its construction method. Background Technology

[0002] Cast-in-place reinforced concrete hollow core slabs are widely used in large-span public buildings and industrial plants due to their significant advantages, including light weight, high rigidity, high load-bearing efficiency, and high utilization rate of space for pipelines. The core component of this type of slab is the self-supporting box (core mold), which constructs a two-way densely ribbed load-bearing system by forming regular cavities within the slab. The positioning stability of the self-supporting box during construction directly determines the forming quality and structural safety of the slab. To resist the buoyancy and lateral pressure during concrete pouring, some existing self-supporting boxes have been designed with interlocking connection structures. However, the product structure design generally suffers from "over-complexity," leading to high costs and low efficiency. Existing interlocking solutions often use additional inserts or rely on complex external geometric mechanisms. This over-complex structural design not only significantly increases the difficulty of mold development and processing, driving up production costs, but also leads to an increased product scrap rate due to excessively high requirements for molding precision. At the same time, the complicated locking mechanism requires precise alignment and time-consuming operation for on-site assembly, resulting in a dilemma in the market: low-cost products lack effective interlocking, while high-performance interlocking products are difficult to popularize due to their cumbersome structure and high cost. Therefore, an interlocking self-supporting box and its construction method are proposed. Summary of the Invention

[0003] The purpose of this invention is to provide an interlocking self-supporting box and its construction method to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an interlocking self-supporting box, comprising: Box; The first mating part has two parts, which are located on two vertical side walls of the box body and are parallel to each other. The second mating part consists of two parts, which are located on the two vertical side walls of the housing. The two second mating parts are alternately located on the four vertical side walls of the housing with the two first mating parts.

[0005] As a further aspect of the present invention: the first mating part includes a support block installed on the housing, a knob lock plate installed at the end of the support block away from the housing, a first tenon installed on the knob lock plate, and a second tenon installed on the outer peripheral surface of the first tenon.

[0006] As a further aspect of the present invention: the second mating part includes a locking block installed on the housing, a locking groove is provided on the locking block, an opening communicating with the locking groove is provided on the end face of the locking block away from the housing, and a positioning hole is provided inside the locking groove of the locking block.

[0007] As a further aspect of the present invention: a plurality of positioning parts are installed at the bottom of the box, the positioning parts including positioning feet connected to the box, and limiting members are provided on the positioning feet.

[0008] As a further aspect of the present invention: the limiting member includes two limiting blocks that are movably connected to the positioning foot, and the two limiting blocks are symmetrically distributed on the outer peripheral surface of the positioning foot.

[0009] A construction method for an interlocking self-supporting box includes the following steps: S1. First, arrange several boxes in an n×n square matrix, where n is a natural number greater than 1. By operating the first and second mating parts between adjacent boxes, the boxes are interlocked and locked together to form an integral box unit. S2. Lay the bottom reinforcement and rib beam steel mesh at the construction site, and hoist the box unit formed in step S1 into the mesh cavity of the steel mesh, simultaneously defining the position of each box in each mesh cavity. S3. After confirming that the position of the box unit is fixed, pour concrete into the steel mesh and the cavity around the box unit. After the concrete solidifies, a hollow floor slab structure is formed.

[0010] As a further aspect of the present invention: In step 2, each box in the box unit corresponds one-to-one with each grid cavity, and the spacing between each grid cavity matches the spacing between each box, thereby achieving precise installation of the box unit and the steel mesh.

[0011] Compared with the prior art, the beneficial effects of the present invention are: This invention achieves rapid interlocking between adjacent boxes by alternately arranging two first mating parts and two second mating parts on the four vertical side walls of each box. This creates an alternating complementary structure in the circumferential direction, eliminating the need for additional inserts or complex locking mechanisms. The simple structure of the box itself allows for quick interlocking, avoiding the high mold development costs and stringent molding precision requirements associated with complex structures, while effectively reducing product scrap rates. This achieves a balance between low cost and high-efficiency interlocking. Since the two first mating parts are located on two parallel side walls, and the two second mating parts are located on two other parallel side walls, alternating in the circumferential direction, any two adjacent boxes can be joined without distinguishing their orientation; simply bringing the adjacent side walls together allows for the first mating parts to interlock. The first mating part and the second mating part are naturally aligned and locked together. This "blind assembly" operation significantly simplifies the on-site assembly process and can quickly build large-area matrix units. It solves the problem of low construction efficiency caused by the fine alignment and time-consuming operation of existing interlocking products. At the same time, by interlocking multiple independent boxes into an overall force-bearing array through the alternating mating parts, the disturbance loads such as vibration collision and pumping impact on a single box can be quickly transmitted and dispersed within the array. This achieves an upgrade from "single box anti-disturbance" to "array as a whole anti-disturbance". This mechanism effectively prevents the chain misalignment phenomenon of local disturbances spreading along the rows and columns, and avoids the quality problems of eccentricity of the entire row of rib beams and uneven cross-sectional dimensions caused by the offset of a single box in traditional construction. It significantly improves the consistency of one-time forming of large-area floor slabs.

[0012] This invention upgrades the traditional discrete control method of "weighting, binding, and point-type limiting" to a collaborative control system of "stable shape of irregular cross-section + interlocking array constraint + three-way limiting positioning" through the coordinated cooperation of the first mating part, two second mating parts, and the positioning part. By forming vertical and horizontal limiting through the positioning part and the bottom formwork grid, combined with the in-plane shear and torsional constraints provided by the first and second mating parts, the self-supporting box can still maintain stable positioning under the conditions of pouring vibration disturbance and concrete lateral pressure fluctuation, reducing the construction risks of array misalignment and rib eccentricity. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the self-supporting box of the present invention; Figure 2 This is a schematic diagram of the first mating part of the present invention; Figure 3 This is a schematic diagram of the second mating part of the present invention; Figure 4 This is a schematic diagram of the interlocking of the first mating part and the second mating part in the present invention; Figure 5 This is a schematic diagram showing the interlocking of the first and second mating parts of the present invention; Figure 6 This is a schematic diagram of the positioning part of the present invention; Figure 7 This is a cross-sectional schematic diagram of the self-supporting box of the present invention; Figure 8 This is a schematic diagram of the box unit assembly of the present invention; Figure 9 This is a schematic diagram of the construction method of the present invention; In the diagram: 1. Box body; 11. Pressure-bearing platform; 12. Reinforcing rib; 13. Reinforcing rib; 2. First mating part; 21. Support block; 22. Knob lock disc; 23. First tenon; 24. Second tenon; 3. Second mating part; 31. Locking block; 32. Locking groove; 33. Opening; 34. Positioning hole; 4. Positioning part; 41. Positioning foot; 42. Limiting component. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figure 1-8 In this embodiment of the invention, an interlocking self-supporting box includes: Box 1; The first mating part 2, there are two first mating parts 2, the two first mating parts 2 are disposed on the two vertical side walls of the box 1, and the two vertical side walls are parallel to each other; The number of second mating parts 3 is two. The two second mating parts 3 are disposed on the two vertical side walls of the box body 1. The two second mating parts 3 and the two first mating parts 2 are alternately disposed on the four vertical side walls of the box body 1.

[0016] Specifically, the overall height of the box body 1 is defined as H, preferably within the range of 200–450 mm. This height range is suitable for the thickness of cast-in-place hollow core slabs commonly used in current building construction, ensuring that the load-bearing ribs of the slab have a reasonable and effective height. The top surface of the box body 1 has a pressure-bearing platform 11, which is located in the critical stress area at the center or edge of the top surface. This platform directly bears the construction load and the impact pressure during concrete pouring, preventing local depressions in the top surface. Reinforcing ribs 12 are arranged around the edge of the top surface inside the box body 1 to form a frame support structure, thereby improving the bending stiffness of the top surface and preventing stacking. The box body 1 is prone to collapse when stepped on by transport or construction personnel. The sidewall thickness of the box body 1 is preferably 3–6 mm, optimizing material usage while ensuring structural strength. To further resist the lateral pressure of concrete, the key pressure-bearing edges of the box body 1 are equipped with longitudinal or circumferential reinforcing ribs 13. The rib height of the reinforcing ribs 13 is preferably 10–25 mm, distributed in a grid or strip pattern. The reinforcing ribs 13 are embedded in the sidewall, increasing the moment of inertia of the box body 1 and effectively suppressing the bulging deformation of the sidewall under high pressure. Furthermore, the four vertical sidewalls of the box body 1 are designed with a slight inclination angle of 5°–15° (i.e., the sidewall is inclined relative to the vertical plane). This inclination angle design utilizes the principle of inclined plane force component to convert horizontal lateral pressure into part of the vertical pressure, significantly reducing the tendency for lateral slippage. Simultaneously, this structure effectively suppresses the "tilting" phenomenon of the box body 1 under pressure, ensuring that the box body 1 maintains a stable posture in the array.

[0017] There are two first mating parts 2, which are respectively set on two parallel vertical side walls of the housing 1. The position of the first mating part 2 corresponds to the reinforcing rib 13, with the reinforcing rib 13 serving as the root support of the first mating part 2, thereby improving the connection strength. There are two second mating parts 3, which are respectively set on the remaining two parallel vertical side walls of the housing 1. The second mating parts 3 and the first mating parts 2 are alternately arranged in the circumferential direction of the housing 1. Specifically, when viewed clockwise along the circumference of the housing 1, the interface types of the four side walls are as follows: first mating part 2, second mating part 3, first mating part 2, second mating part 3. The structure of the second mating part 3 complements the first mating part 2, so that any two adjacent housings 1 can achieve a tight engagement through the first mating part 2 and the second mating part 3.

[0018] During construction, operators first arrange multiple self-supporting boxes into an n×n matrix unit. Because the interfaces on the four side walls are alternately arranged, operators do not need to distinguish the orientation of the boxes; they can align the first mating part 2 and the second mating part 3 of any two adjacent boxes 1 and push them directly in horizontally to lock them in place. This operation method achieves rapid "blind assembly," significantly improving assembly efficiency. The pre-assembled matrix unit is lifted as a whole by a crane. During lifting and swinging, thanks to the 5°–15° inclination design of the side walls and the support of the reinforcing ribs 13, the box 1 does not warp or deform at the edges while suspended, and the overall posture of the matrix unit remains stable. The interlocking of the first mating part 2 and the second mating part 3 effectively resists shear force, and the inclination structure suppresses deformation, allowing the matrix unit to be positioned in one go when it falls into the template grid. This solves the problems of scattered arrays and the need for high-altitude individual correction in existing technologies, achieving "immediate positioning upon lifting." During concrete pouring, when lateral pressure acts on the box wall, 3–6 mm of... The wall thickness, combined with 10-25mm high reinforcing ribs 13, jointly bears the load. The reinforcing ribs 13 disperse and transfer the large-area lateral pressure to the interlocking nodes, preventing the thin-walled box from bulging and ensuring the uniformity of the rib beam cross-sectional dimensions. To address the requirements for buoyancy resistance and anti-slip, a 5°-15° sidewall inclination angle converts some of the horizontal buoyancy into vertical clamping force. Combined with the uniform distribution of the upper load by the bearing platform 11, this enhances the buoyancy stability of the box 1. Simultaneously, the inclined surface increases the connection between the box 1 and the concrete... The frictional interlocking force between the concrete blocks inhibits the slippage tendency during the pouring and vibration process. In addition, the interlocking cooperation between the first mating part 2 and the second mating part 3 quickly transmits the impact force on the individual box 1 to the entire matrix, so that the load is shared by the group, avoiding single-point failure. This dual stabilization mechanism (tilt steady state + interlocking force transmission) eliminates the hidden dangers of floating and drifting, and eliminates quality defects such as narrowing of rib beams or honeycomb surface caused by box deformation, ensuring that the cavity ratio and stress performance of the floor slab meet the design requirements.

[0019] Through the above solution, the refined static structural design of "size adaptation, stiffening with reinforcing ribs, and stable tilt angle" is deeply integrated with the dynamic construction logic of "alternating interlocking, rapid blind assembly, and overall stress distribution". This not only solves the problems of high cost and easy deformation of existing products with a minimalist structure, but also provides a highly reliable and economical core component solution for cast-in-place hollow floor slabs through a height coverage of 200-450mm, an optimized wall thickness of 3-6mm, and a scientific tilt angle of 5°-15°.

[0020] Please see Figure 2-5In one embodiment, preferably, the first mating part 2 includes a support block 21 mounted on the housing 1, a knob lock disc 22 mounted on the end of the support block 21 away from the housing 1, a first tenon 23 mounted on the knob lock disc 22, and a second tenon 24 mounted on the outer peripheral surface of the first tenon 23; the second mating part 3 includes a locking block 31 mounted on the housing 1, a locking groove 32 is provided on the locking block 31, an opening 33 communicating with the locking groove 32 is provided on the end face of the locking block 31 away from the housing 1, and a positioning hole 34 is provided inside the locking groove 32 of the locking block 31.

[0021] Specifically, the first mating part 2 is disposed on two parallel side walls of the housing 1, and the first mating part 2 is in the shape of a tenon, with a protruding length preferably of 20-40mm and a width preferably of 30-60mm, ensuring that the first mating part 2 can be smoothly inserted into the second mating part 3 of the adjacent housing 1 to form a preliminary interlocking connection, and to undertake the lateral positioning and partial shear force transmission function between the adjacent housing 1; the second mating part 3 is disposed on the remaining two parallel side walls of the housing 1, and is in the shape of a groove, with a groove width preferably of 32-65mm, slightly larger than the width of the first mating part 2 to allow for assembly tolerance. The fitting of the first mating part 2 and the second mating part 3 makes the adjacent housing 1... When the housing 1 is horizontally spliced, it forms a stable geometric interlocking relationship, providing a basic positioning for subsequent mechanical locking; the support block 21 is fixedly installed on the housing 1, and the knob lock disc 22 is rotatably installed on the end of the support block 21, which can be rotated relative to the support block 21; the first tenon 23 is coaxially installed at the end face axis of the knob lock disc 22, and the end diameter of the first tenon 23 is adapted to the inner diameter of the positioning hole 34 of the adjacent housing 1, which is used to achieve precise positioning in the vertical direction; the second tenon 24 is sleeved on the outer periphery of the first tenon 23, and its thickness matches the width of the opening 33 on the side wall of the locking block 31, and its overall outline is adapted to the shape of the locking groove 32 inside the locking block 31.

[0022] When assembling the box 1 at the construction site, bring the two boxes 1 to be connected close together, aligning the first mating part 2 of one box with the second mating part 3 of the adjacent box. At this time, adjust the angle of the knob lock plate 22 so that the long axis of the second tenon 24 is perpendicular to the extension direction of the lock groove 32, and push it in horizontally. The second tenon 24 passes through the opening 33 and enters the lock groove 32. At the same time, the end of the first tenon 23 is simultaneously inserted into the positioning hole 34. In this state, the boxes are initially connected. The operator manually rotates the knob lock plate 22, which drives the first tenon 23 and the second tenon 24 to rotate synchronously. When the rotation reaches the second... When the tenon 24 is in a horizontal state, the knob lock plate 22 is limited and locked. At this time, the second tenon 24 is completely fitted with the inner wall of the lock groove 32, forming a "T"-shaped interlocking structure. After the above operation is completed, the first mating part 2 and the second mating part 3 play a dual constraint role. The fit between the second tenon 24 and the lock groove 32 effectively prevents the first mating part 2 from coming out of the second mating part 3, playing a role in anti-slip and anti-pull-out, and constraining the horizontal distance between the two boxes 1. The clearance fit between the first tenon 23 and the positioning hole 34 restricts the relative displacement of the box 1 in the vertical direction, preventing the box 1 from moving up and down during the pouring process.

[0023] Through the above-mentioned "plug-in + rotation locking" operation, an omnidirectional rigid connection is achieved between two adjacent box 1s, completely eliminating the risk of bidirectional slippage and ensuring the overall stability of the matrix unit composed of multiple box 1s during hoisting and concrete pouring.

[0024] Please see Figure 6 In one embodiment, preferably, a plurality of positioning parts 4 are installed at the bottom of the housing 1. The positioning part 4 includes a positioning foot 41 connected to the housing 1, and a limiting member 42 is provided on the positioning foot 41.

[0025] Specifically, in this embodiment, preferably, there are four positioning parts 4, which are located at the four corners of the bottom surface of the box 1. This effectively avoids the box 1 tilting or partially suspended due to insufficient support points, ensuring that no corner of the box 1 will lift up. The positioning feet 41 extend downward in a columnar shape. When the box 1 is placed, its bottom main body can be stably connected to the laid lower steel mesh. The positioning feet 41 serve as the connection medium between the box 1 and the steel mesh. The limiting member 42 is provided on the outer peripheral surface of the positioning feet 41. The purpose of the limiting member 42 is to increase the interlocking area between the positioning feet 41 and the steel mesh, providing additional pull-out resistance.

[0026] Please see Figure 6 In one embodiment, preferably, the limiting member 42 includes two limiting blocks that are movably connected to the positioning foot 41, and the two limiting blocks are symmetrically distributed on the outer peripheral surface of the positioning foot 41.

[0027] Specifically, the limiting block is mounted on the positioning foot 41 via a one-way hinge, achieving a movable connection with the positioning foot 41. This allows the limiting block to have a certain degree of rotational freedom relative to the positioning foot 41, enabling it to deflect within a certain angle range. The longitudinal section of each limiting block is preferably designed as an inverted triangular structure. Specifically, its lower end is a sharp guide angle, and its upper end is a flat load-bearing surface. In its natural state, the two limiting blocks are in an outward-opening state, or their maximum outer diameter is slightly larger than the theoretical clearance size of the reinforcing mesh, in preparation for forming a jamming effect. The main body diameter of the positioning foot 41 is designed to be smaller than the minimum inner diameter of the reinforcing mesh, ensuring smooth passage even without interference from the limiting block. The maximum span of the limiting block after unfolding is designed to be larger than the inner diameter of the reinforcing mesh, thus enabling it to jam the reinforcing bar.

[0028] Construction workers hoisted the box body 1 above the already tied lower layer of reinforcing steel mesh and controlled its slow descent. When the limiting block at the lower end of the positioning foot 41 contacted the surface of the upper layer of reinforcing steel mesh, due to the inverted triangular pointed structure at the lower end of the limiting block and its movable connection with the positioning foot 41, the reinforcing steel would generate an upward reaction force on the limiting block. Under the push of the reaction force, the two symmetrically distributed limiting blocks rotated inward around the connection point, changing from an open state to a closed state, tightly adhering to the outer wall of the positioning foot 41. At this time, the limiting block and the positioning foot 41 formed a whole. The outer diameter of the profile is reduced to be smaller than the aperture of the reinforcing mesh, ensuring that the positioning foot 41 and the limiting block can smoothly and unobstructedly pass through the holes of the reinforcing mesh without manual intervention, significantly improving the positioning efficiency. When the positioning foot 41 has completely passed through the reinforcing mesh and the limiting block has crossed the reinforcing bar plane and reached below the reinforcing mesh, the compressive force from the upper reinforcing bar disappears. Under the action of gravity, the two limiting blocks automatically flip outward and reset to their open state. After resetting, the upper surface of the limiting block is horizontal and faces upward, just abutting against the lower surface of the reinforcing mesh. Since the limiting block has already... When the box is opened, its width is greater than the diameter of the steel mesh, so it cannot pass through the steel mesh upwards. When the concrete is poured, the huge buoyancy attempts to push the box 1 upwards. At this time, the box 1 moves the positioning foot 41 upwards, which in turn moves the limiting block upwards. Since the upper surface of the limiting block is blocked by the steel mesh, this relative movement is forcibly terminated. The limiting block converts the upward buoyancy into vertical pressure on the steel mesh. Using the steel mesh as a reaction force base, the box 1 is firmly fixed, which improves the compressive strength, prevents the limiting block from being crushed and deformed, and avoids stress concentration damage to the steel bars caused by point contact. This ensures the reliability of the anchoring. Compared with the cumbersome process of manually tying wires one by one or using heavy objects to press down on the top in traditional construction, the box installation is "tied-free and self-anchored". It not only effectively prevents the box 1 from floating and displacing relative to the steel mesh, ensuring the accuracy of the rib height and floor slab thickness, but also greatly reduces the labor intensity of workers and improves the overall mechanization level and engineering quality of cast-in-place hollow floor slab construction. It is particularly suitable for scenarios where multiple self-supporting boxes are combined into a box unit.

[0029] Please see Figure 8-9 An interlocking self-supporting box construction method includes the following steps: S1. First, arrange several boxes in an n×n square matrix, where n is a natural number greater than 1. By operating the first and second mating parts between adjacent boxes, the boxes are interlocked and locked together to form an integral box unit. Specifically, in this embodiment, n=3 is preferred, meaning that nine self-supporting box units are combined to form a 3×3 "nine-square grid" box unit. This specification was chosen based on a comprehensive optimization of construction hoisting capacity, transportation size limitations, and anti-buoyancy mechanical performance. To verify the anti-buoyancy safety of this integral box unit during concrete pouring, the applicant conducted detailed mechanical simulations and data calculations, assuming that the volume of a single standard box unit is 100m³. 3 (Note: The values ​​here are illustrative scale data; in actual engineering projects, the volume of a single unit is typically 0.1–1.0 m³.) 3 The quantity is based on a concrete density of 2.5 t / m³. 3 The contributions of the enclosure's self-weight and anti-buoyancy components are shown in the table below:

[0030] S2. Lay the bottom reinforcement and rib beam steel mesh at the construction site, and hoist the box unit formed in step S1 into the mesh cavity of the steel mesh, simultaneously defining the position of each box in each mesh cavity. Specifically, in the formwork system at the construction site, the lower layer of floor slab reinforcement and rib beam reinforcement mesh are first laid according to the design drawings. When tying the rib beam reinforcement, the spacing of the longitudinal and transverse rib beam reinforcement is controlled so that the size of the resulting mesh cavity matches the external contour size of the box unit prepared in step S1. This reinforcement mesh is pre-divided into several standard mesh areas, and the geometric center, side length, and diagonal dimensions of each mesh area are set to be consistent with the individual box units in the box unit. Subsequently, the integral box unit formed in step S1 is lifted as a whole using lifting equipment, and the operators adjust the posture of the box unit using traction ropes. The bottom positioning part 4 is vertically aligned with the corresponding mesh cavity in the steel mesh below. The hook slowly descends, and the positioning feet 41 of all the boxes in the box unit are simultaneously inserted into the corresponding steel mesh cavity. When the box unit falls to the plane of the steel mesh, the four positioning parts 42 form a locking mechanism, completing the position limitation of the entire unit in three-dimensional space. Since the box unit has been rigidly locked inside through the first mating part 2 and the second mating part 3, and its external dimensions are adapted to the steel mesh size, the relative positions of the boxes inside are automatically fixed after the unit is in place, without the need for fine-tuning or binding of individual boxes.

[0031] By using the above method, the operation that originally required multiple hoisting, alignment and fixing can be reduced to one hoisting, one alignment and one automatic locking, which improves construction efficiency, shortens the construction period, reduces the number of workers working at height and reduces safety risks.

[0032] S3. After confirming that the position of the box unit is fixed, pour concrete into the steel mesh and the cavity around the box unit. After the concrete solidifies, a hollow floor slab structure is formed.

[0033] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0034] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. An interlocking self-supporting box, characterized in that, include: Box; The first mating part, there are two first mating parts, the two first mating parts are disposed on two vertical side walls of the box body, and the two vertical side walls are parallel to each other; The second mating part has two parts, which are disposed on two vertical side walls of the box body. The two second mating parts and the two first mating parts are alternately disposed on four vertical side walls of the box body.

2. The interlocking self-supporting box according to claim 1, characterized in that, The first mating part includes a support block installed on the box body, a knob lock plate installed at the end of the support block away from the box body, a first tenon installed on the knob lock plate, and a second tenon installed on the outer peripheral surface of the first tenon.

3. The interlocking self-supporting box according to claim 2, characterized in that, The second mating part includes a locking block installed on the housing, a locking groove is provided on the locking block, an opening communicating with the locking groove is provided on the end face of the locking block away from the housing, and a positioning hole is provided inside the locking groove of the locking block.

4. The interlocking self-supporting box according to claim 1, characterized in that, The bottom of the box is equipped with several positioning parts, each including a positioning foot connected to the box, and a limiting member is provided on the positioning foot.

5. The interlocking self-supporting box according to claim 4, characterized in that, The limiting component includes two limiting blocks that are movably connected to the positioning foot, and the two limiting blocks are symmetrically distributed on the outer peripheral surface of the positioning foot.

6. A construction method for an interlocking self-supporting box, characterized in that, Includes the following steps: S1. First, arrange several boxes in an n×n square matrix, where n is a natural number greater than 1. By operating the first and second mating parts between adjacent boxes, the boxes are interlocked and locked together to form an integral box unit. S2. Lay the bottom reinforcement and rib beam steel mesh at the construction site, and hoist the box unit formed in step S1 into the mesh cavity of the steel mesh, simultaneously defining the position of each box in each mesh cavity. S3. After confirming that the position of the box unit is fixed, pour concrete into the steel mesh and the cavity around the box unit. After the concrete solidifies, a hollow floor structure is formed.

7. The construction method for interlocking self-supporting boxes according to claim 6, characterized in that, In step 2, each box in the box unit corresponds one-to-one with each of the mesh cavities, and the spacing between each mesh cavity matches the spacing between each box, thereby achieving precise installation of the box unit and the steel mesh.

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