CN211313140U

CN211313140U - Combined rapid assembling ladder step structure for assembly type building

Info

Publication number: CN211313140U
Application number: CN201922059298.4U
Authority: CN
Inventors: 唐蜜; 唐明君; 王文典; 田艺红; 覃勇; 吴前龙; 贾川莉
Original assignee: Sichuan Changneng Assembly Construction Technology Co ltd
Current assignee: Sichuan Changneng Assembly Construction Technology Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-08-21
Anticipated expiration: 2029-11-26

Abstract

The utility model discloses a combined rapid assembly ladder step structure for an assembly type building, which is characterized in that two installation positions with height difference in the building are rapidly connected through bolts, the structure comprises a main body prefabricated by concrete, one side surface of the main body is a flat surface, and a side surface opposite to the flat surface is provided with a plurality of steps; the main body is connected with the installation position at the higher side of the structure, one end of the main body is a high-position end, and the other end of the main body is connected with the installation position at the lower side of the structure; connecting pieces buried in the main body are arranged on the high-position end and the low-position end, a plurality of fixing holes are formed in the connecting pieces, and mounting holes corresponding to the fixing holes are formed in the main body towards each mounting position; and a working groove communicated with the nearest fixing hole inside is arranged on the side surface of the main body. The utility model discloses simple structure just pours fixedly through the connecting piece that is equipped with and the reinforcing bar of difference to improve structural strength and connection stability.

Description

Combined rapid assembling ladder step structure for assembly type building

Technical Field

The utility model belongs to the technical field of the building, concretely relates to combination formula rapid Assembly ladder step structure for assembly type structure.

Background

With the development of modern industrial technology, building houses can be manufactured in batches and sets like machine production. The prefabricated house components are transported to a construction site to be assembled. The assembly type building has high construction speed and low production cost, and is rapidly popularized and developed all over the world. Early fabricated building profiles were rather rigid. Later improvements in design have resulted in increased flexibility and versatility to allow modular construction not only in batch, but also in a wide variety of styles. A movable dwelling is an advanced assembly type building, each dwelling unit is like a large trailer, and the dwelling unit can be used only by pulling the dwelling unit to the site by a special automobile and then hoisting the dwelling unit to a floor cushion block by a crane to be connected with a pre-buried water channel, a power supply and a telephone system. The movable dwelling house is internally provided with facilities such as a heating system, a bathroom, a kitchen, a dining room, a bedroom and the like. The movable dwellings can be formed into a unit independently or can be connected with each other.

In a fabricated building, the most central concept is to fabricate the structure by batch prefabrication. Originally, all the stairs manufactured in the building are cast by erecting a mold on site, but no mold specially used for erecting the stairs is provided at present, and the specifications of the stairs in the same building are different according to the difference of design parameters of different buildings. The existing mould is mostly temporary supporting structure, and the polylith template is fixed temporarily, then the concrete structure who pours appears defects such as unsmooth unevenness in surface easily, and appears the problem that supporting structure shifted when pouring easily. Because the site environment of building site is comparatively complicated, the mould that current polylith template concatenation formed pours the mode and can't stably carry out the ladder step shaping.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a combination formula rapid Assembly ladder step structure for assembly type structure.

The utility model discloses the technical scheme who adopts does:

a combined rapid assembly ladder step structure for an assembly type building is characterized in that two installation positions with height difference in the building are rapidly connected through bolts, the combined rapid assembly ladder step structure comprises a main body prefabricated by concrete, one side surface of the main body is a flat surface, and a side surface opposite to the flat surface is provided with a plurality of steps;

the main body is connected with the installation position at the higher side of the structure, one end of the main body is a high-position end, and the other end of the main body is connected with the installation position at the lower side of the structure;

connecting pieces buried in the main body are arranged on the high-position end and the low-position end, a plurality of fixing holes are formed in the connecting pieces, and mounting holes corresponding to the fixing holes are formed in the main body towards each mounting position;

a working groove communicated with the nearest fixing hole inside is formed in the side face of the main body, and a screw rod is placed inwards from the opening of the working groove and inserted into the fixing hole to penetrate through the mounting hole to be fixedly connected with the mounting position; or the screw rod is inserted from one side of the mounting position and sequentially passes through the mounting hole and the fixing hole to be connected.

The assembly type building is a new construction process which is formed in the existing construction engineering, and compared with the traditional construction method, the assembly type building can be designed in a modular structure, most structures of the structure can be prefabricated in a factory, and therefore the efficiency of field construction and assembly is improved. The method is mainly used for building steel structure buildings in the past by adopting the mode, and along with the continuous improvement of concrete technology in recent years, a plurality of engineering mechanical devices are continuously updated, so that the method is pushed to the construction of concrete structures.

The utility model relates to a structure in the prefabricated construction is exclusively used in, is a ladder step particularly, also is the stair. Originally, all the stairs manufactured in the building are cast by erecting a mold on site, but no mold specially used for erecting the stairs is provided at present, and the specifications of the stairs in the same building are different according to the difference of design parameters of different buildings. And current mould is mostly interim supporting construction, and the polylith template is fixed temporarily, and then the concrete structure of pouring appears defects such as the unsmooth unevenness in surface easily, and appears the problem that supporting construction shifted when pouring easily. Because the site environment of building site is comparatively complicated, the mould that current polylith template concatenation formed pours the mode and can't stably carry out the ladder step shaping.

The utility model discloses a ladder step is a prefabricated construction, compares in current ladder step structure, and it is direct to pour in the mill through the mould, and its characteristics are that the junction does not adopt the reinforcing bar to connect fixedly, can not plant the muscle at the assembled simultaneously yet, but directly is equipped with the mode of connecting piece in inside, thereby reaches stable condition through screw rod connection installation position and connecting piece.

The high-level end and the low-level end are scientific terms for defining two positions with different heights, because the ladder step is a sloping plate structure, the upward surface of the ladder step is a step surface, the high-level end is a connecting convex structure for connecting an upper-layer mounting position, and the low-level end is a convex structure for connecting a lower-layer mounting position on the ground. The installation site of the present invention is used to limit the reserved structure for connecting the main structure, and includes various forms, such as a sink on the ground, or a fixed platform, or a specific plane area, only for limiting and describing the connection relationship of the ladder steps, and it is not limited herein.

The so-called connector is a metal member structure prefabricated in the main body, which is transversely arranged at two ends of the main body, and is generally placed in a mold together with internal steel bars for casting and shaping before construction. The connecting piece is provided with a plurality of fixing holes, and the main body is also provided with a mounting hole coaxial with the fixing holes, so that the connecting piece is convenient to insert a screw rod from the outside for connection.

That is to say, the connecting piece is the reinforcement that sets up in main part both ends tip, and what replace originally reserve the muscle is the screw rod that sets up in the mounting hole. When leaving the factory, the main body surface is not provided with any steel bar structure, so that the condition that steel bars are bent in the transportation process is avoided, meanwhile, the occupied space can be reduced, and the space utilization rate during transportation is improved. When the utility model provides a when ladder step transported to the site, hoist this ladder step to predetermined mounted position through the loop wheel machine, and will high-order end is connected with the installation position on upper strata, the low level end is connected with the installation position of lower floor, and the rethread inserts the screw rod and connects fixedly this moment to reach the effect of replacing steel bar connection.

Because be equipped with a plurality of fixed orificess on the connecting piece, then the accessible dual mode is fixed, is close to the fixed orifices in the worker groove that the main part side was equipped with, and the accessible inserts the screw rod from worker inslot and fixes, and high screw rod one end is equipped with the expansion end, and the tensioning of being convenient for is fixed. Or the screw rods are inserted into the corresponding holes arranged on one side of the mounting position for connection and fixation, and the two modes can be used.

Furthermore, the connecting piece is including setting up the first connecting plate at the high-order end and setting up the second connecting plate at the low-order end, all be equipped with the fixed orifices on first connecting plate and the second connecting plate and be equipped with the terminal surface of fixed orifices and be parallel to each other.

Furthermore, the main body is provided with a connecting hole which penetrates through the main body in the transverse direction, and a long-strip screw rod is inserted into the connecting hole to fixedly connect the main bodies in the transverse direction to form a ladder step structure.

Furthermore, parallel reinforcing steel bars close to the parallel surface and bent reinforcing steel bars close to the steps are further arranged in the main body; the ends of the parallel reinforcing steel bars and the bent reinforcing steel bars are connected with the first connecting plate and the second connecting plate.

Furthermore, the first connecting plate comprises a first fixing plate and a first extending plate which are connected with each other and have right angles, the fixing hole is formed in the first fixing plate, and a clamping hole A for fixing the end parts of the parallel reinforcing steel bars and the bent reinforcing steel bars is formed in the first fixing plate;

the first extension plate extends inwards along the bent reinforcing steel bar and is provided with a first sleeving piece sleeved on the surface of the bent reinforcing steel bar at the end part of the first extension plate.

The structure of the first connecting plate is defined here, said first fixing plate being the main structure for the connection, while the so-called first extension plate further improves the stability and structural strength of the entire connection.

Further, the second connecting plate comprises a second fixing plate and extension structures arranged on two sides of the second fixing plate, and the extension structures comprise upper extension plates and lower extension plates; the fixing holes are formed in the second fixing plate, and clamping holes B fixedly connected with the parallel reinforcing steel bars and the bent reinforcing steel bars are further formed in the second fixing plate;

the upper extension plate extends inwards along the bent reinforcing steel bar and is provided with an upper sleeving part sleeved with the surface of the bent reinforcing steel bar at the end part;

the lower extension plate extends inwards along the parallel steel bars and is provided with a lower sleeving piece sleeved with the surfaces of the parallel steel bars at the end part of the lower extension plate.

Furthermore, a reinforcing plate is arranged on the bent steel bar corresponding to each step, and the reinforcing plate is of an angle steel structure.

Furthermore, parallel reinforcing bar and the reinforcing bar of buckling are equipped with at least three groups along the width direction equidistance of main part.

Furthermore, the parallel reinforcing steel bars and the end parts of the two ends of the bent reinforcing steel bars are bent for 180 degrees to form bent parts, and the first connecting plate and the second connecting plate are fixedly connected with the bent parts.

Furthermore, two side surfaces of the main body are symmetrically provided with working grooves

Further, the work groove is arranged on the surface of the highest step and the surface of the lowest step corresponding to each fixing hole.

The utility model has the advantages that:

the utility model discloses the ladder step is a prefabricated construction, compares in current ladder step structure, and it is direct to pour in the mill through the mould, and its characteristics are that the junction does not adopt the reinforcing bar to connect fixedly, can not plant the muscle at the assembled simultaneously yet, but directly is equipped with the mode of connecting piece in inside, thereby connects installation position and connecting piece through the screw rod and reaches steady state. In addition, the utility model adds different reinforcing parts in the main structure, thereby improving various problems presented by the prior ladder steps; through two connecting pieces that are equipped with can realize not having reinforcing bar assembly connection's effect, avoid carrying out the cloth muscle in advance and cause the too big influence transportation of reservation reinforcing bar occupy-up, compare in the mode of later stage bar planting simultaneously, its assembly efficiency is faster, and provides better structural strength and connection stability through the connecting piece that adds.

Drawings

FIG. 1 is a schematic axial view of the step structure of the present invention;

fig. 2 is an enlarged schematic view of a portion a of fig. 1 according to the present invention;

FIG. 3 is a top view of the step structure of the present invention;

FIG. 4 is a schematic view of the inner reinforcing bars and the connecting members of the present invention;

fig. 5 is an enlarged schematic view of a portion B in fig. 4, mainly illustrating a specific structure of the first connecting plate according to the present invention;

fig. 6 is an enlarged schematic view of a portion C in fig. 4, mainly illustrating a specific structure of the second connecting plate;

fig. 7 is a schematic view a of an assembly axis side of the reinforcing steel bar and the connecting member of the present invention;

fig. 8 is an enlarged partial view of fig. 7 according to the present invention;

fig. 9 is a schematic axial view B of the assembly of the reinforcing bars and the connecting member of the present invention;

FIG. 10 is a partial perspective side view of the step structure of the present invention;

FIG. 11 is a perspective view of the step structure of the present invention;

fig. 12 is an enlarged partial view of E of fig. 10 according to the present invention;

FIG. 13 is an isometric view of a single step structure formed by three bodies tensioned by elongated screws of the present invention;

fig. 14 is a schematic side view of the single step structure of the present invention split into three bodies.

In the figure: 1-main body, 101-high end, 102-low end, 2-step, 3-fixing hole, 4-mounting hole, 5-first connecting plate, 501-first fixing plate, 502-first extending plate, 503-first sleeving piece; 6-a second connecting plate, 601-a second fixing plate, 602-an upper extending plate, 603-a lower extending plate, 604-an upper socket joint, 605-a lower socket joint, 7-parallel steel bars, 8-bent steel bars, 9-a reinforcing plate, 10-a groove and 11-a connecting plate.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

the present embodiment is a structure specifically used in prefabricated buildings, and specifically a stair step, i.e., a staircase. Originally, all the stairs manufactured in the building are cast by erecting a mold on site, but no mold specially used for erecting the stairs is provided at present, and the specifications of the stairs in the same building are different according to the difference of design parameters of different buildings. And current mould is mostly interim supporting construction, and the polylith template is fixed temporarily, and then the concrete structure of pouring appears defects such as the unsmooth unevenness in surface easily, and appears the problem that supporting construction shifted when pouring easily. Because the site environment of building site is comparatively complicated, the mould that current polylith template concatenation formed pours the mode and can't stably carry out the ladder step shaping.

The ladder step of this embodiment is a prefabricated construction, compares in current ladder step structure, and it is direct to pour in the mill through the mould, and its characteristics are that the junction does not adopt the reinforcing bar to connect fixedly, can not plant the muscle at the assembled simultaneously yet, but directly is equipped with the mode of connecting piece in inside, thereby connects installation position and connecting piece through the screw rod and reach stable state. The combined rapid assembly ladder step structure for the assembly type building is characterized in that two installation positions with height difference are rapidly connected with a structure through bolts, the combined rapid assembly ladder step structure comprises a main body 1 prefabricated by concrete, one side surface of the main body 1 is a flat surface, and a multi-stage step 2 is arranged on one side surface opposite to the flat surface. The main body 1 is connected with the installation position at the higher side of the structure, and one end is a high-level end 101, and the other end is connected with the installation position at the lower side of the structure and a low-level end 102.

The connecting piece is including setting up first connecting plate 5 at high-order end 101 and setting up the second connecting plate 6 at low-order end 102, all be equipped with fixed orifices 3 and be equipped with the terminal surface of fixed orifices 3 and be parallel to each other on first connecting plate 5 and the second connecting plate 6. The main body 1 is also internally provided with parallel steel bars 7 close to the parallel surface and bent steel bars 8 close to the steps 2; the ends of the parallel reinforcing steel bars 7 and the bent reinforcing steel bars 8 are connected with the first connecting plate 5 and the second connecting plate 6.

Connecting pieces buried in the main body 1 are arranged on the high-level end 101 and the low-level end 102, a plurality of fixing holes 3 are formed in the connecting pieces, and mounting holes 4 corresponding to the fixing holes 3 are formed in the main body 1 towards each mounting position; a working groove 10 communicated with the nearest fixing hole 3 in the main body 1 is arranged on the side surface of the main body 1, and a screw is placed inwards from the opening of the working groove 10 and inserted from the fixing hole 3 to penetrate through the mounting hole 4 to be fixedly connected with a mounting position; or a screw rod is inserted from one side of the mounting position and sequentially passes through the mounting hole 4 and the fixing hole 3 to be connected. The high-level end 101 and the low-level end 102 are scientific terms for defining two positions with different heights, because the step is a sloping plate structure, the upward side of the step is the step 2 side, the high-level end 101 is a connecting convex structure for connecting the mounting position on the upper layer, and the low-level end 102 is a convex structure for connecting the mounting position on the lower layer.

The installation site of the present embodiment is used to define a reserved structure for connecting the main body 1 structure, and includes various forms, such as a sink on the ground, or a fixed platform, or a specific plane area, only for defining and describing the connection relationship of the ladder steps, which is not limited herein. The so-called connector is a metal member structure prefabricated inside the main body 1, which is transversely arranged at two ends of the main body 1, and is generally placed into a mold together with internal steel bars for casting and shaping before construction. The connecting piece is provided with a plurality of fixing holes 3, and the main body 1 is also provided with a mounting hole 4 coaxial with the fixing holes 3 in advance, so that a screw rod can be conveniently inserted from the outside for connection. That is, the connecting members are reinforcing members disposed at both end portions of the main body 1, and screws disposed in the mounting holes 4 are used instead of the original reserved ribs.

When leaving the factory, the main body 1 is not provided with any steel bar structure outside the surface, so that the condition of bending the steel bars in the transportation process is avoided, the occupied space can be reduced, and the space utilization rate during transportation is improved. When the ladder step in the embodiment is transported to a site, the ladder step is hoisted to a preset installation position through a crane, the high-position end 101 is connected with the installation position of the upper layer, the low-position end 102 is connected with the installation position of the lower layer, and at the moment, the ladder step is connected and fixed through the inserted screw rod, so that the effect of replacing the connection of the steel bars is achieved.

Because be equipped with a plurality of fixed orificess 3 on the connecting piece, then the accessible dual mode is fixed, is close to the fixed orifices 3 of the worker groove 10 that main part 1 side was equipped with, and the accessible is fixed from inserting the screw rod in the worker groove 10, and high screw rod one end is equipped with the end that enlarges, is convenient for taut fixed. Or the screw rods are inserted into the corresponding holes arranged on one side of the mounting position for connection and fixation, and the two modes can be used.

As shown in fig. 13 and 14, the main body 1 is provided with a connecting hole 12 penetrating in the transverse direction, and a plurality of main bodies 1 are connected and fixed in the transverse direction to form a ladder step structure by inserting a long screw into the connecting hole 12.

Example 2:

as shown in fig. 1 to 12, the embodiment is specifically a combined rapid assembly stair step structure for an assembly type building, which is used for rapidly connecting two installation positions with a height difference in a structure through bolts, and comprises a main body 1 prefabricated by concrete, wherein one side surface of the main body 1 is a flat surface, and a side surface opposite to the flat surface is provided with a plurality of steps 2.

The main body 1 is connected with the installation position at the higher side of the structure, and one end is a high-level end 101, and the other end is connected with the installation position at the lower side of the structure and a low-level end 102. The connecting piece is including setting up first connecting plate 5 at high-order end 101 and setting up the second connecting plate 6 at low-order end 102, all be equipped with fixed orifices 3 and be equipped with the terminal surface of fixed orifices 3 and be parallel to each other on first connecting plate 5 and the second connecting plate 6. And the inside of the main body 1 is also provided with a parallel reinforcing steel bar 7 close to the parallel surface and a bent reinforcing steel bar 8 close to the step 2.

The ends of the parallel steel bars 7 and the bent steel bars 8 are connected with the first connecting plate 5 and the second connecting plate 6. The first connecting plate 5 comprises a first fixing plate 501 and a first extending plate 502 which are connected with each other and have a right angle, the fixing hole 3 is arranged on the first fixing plate 501, and a clamping hole A for fixing the end parts of the parallel reinforcing steel bars 7 and the bent reinforcing steel bars 8 is arranged on the first fixing plate 501; the first extension plate 502 extends inwards along the bent steel bar 8 and is provided with a first sleeve 503 at the end thereof, which is sleeved on the surface of the bent steel bar 8.

The structure of the first connecting plate 5 is defined here, the first fixing plate 501 is the main structure for connection, and the so-called first extension plate 502 can further improve the stability and structural strength of the whole connector.

The second connecting plate 6 comprises a second fixing plate 601 and extension structures arranged at both sides of the second fixing plate 601, wherein the extension structures comprise an upper extension plate 602 and a lower extension plate 603; the fixing hole 3 is arranged on the second fixing plate 601, and the second fixing plate 601 is also provided with a clamping hole B fixedly connected with the parallel reinforcing steel bar 7 and the bent reinforcing steel bar 8; the upper extension plate 602 extends inwards along the bent steel bar 8 and is provided with an upper socket 604 at the end thereof, which is in socket connection with the surface of the bent steel bar 8; the lower extension plate 603 extends inward along the parallel reinforcing bars 7 and is provided at its end with a lower coupling 605 to be coupled with the surface of the parallel reinforcing bars 7.

The bent reinforcing steel bars 8 are provided with a reinforcing plate 9 corresponding to each step 2, and the reinforcing plate 9 is of an angle steel structure. At least three groups of parallel reinforcing steel bars 7 and bent reinforcing steel bars 8 are arranged at equal intervals along the width direction of the main body 1.

And the parallel reinforcing steel bars 7 and the end parts of the two ends of the bent reinforcing steel bars 8 are bent for 180 degrees to form bent parts, and the first connecting plate 5 and the second connecting plate 6 are fixedly connected with the bent parts. The two side surfaces of the main body 1 are symmetrically provided with the working grooves 10, or the working grooves 10 are arranged on the surfaces of the highest step 2 and the lowest step 2 corresponding to each fixing hole 3. The present embodiment adopts the symmetrical arrangement of the working grooves 10 on both sides of the main body 1, and the arrangement position is also clearly shown in fig. 1.

Example 3:

the embodiment discloses a combination formula rapid Assembly ladder step structure for assembly type structure, includes by precast concrete's main part 1, a side of main part 1 is the planishing face, with be equipped with multistage step 2 on the relative side of planishing face.

The high-position end 101, the low-position end 102 and the step section are of an independent module structure, and the high-position end 101 and the step section, and the low-position end 102 and the step section are fixedly connected through bolts; the high end 101 is close to one side of the ladder step section, the low end 102 is close to one side of the ladder step section and the two side ends of the ladder step section are both provided with connecting plates 11, and the connecting plates passing bolts through two adjacent modules are fixed.

The present invention is not limited to the above-mentioned alternative embodiments, and various other products can be obtained by anyone under the teaching of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.

Claims

1. The utility model provides a combination formula rapid Assembly ladder step structure for prefabricated building, has two installation positions of difference in height through bolt high-speed joint structure in, its characterized in that:

the concrete casting device comprises a main body (1) prefabricated by concrete, wherein one side surface of the main body (1) is a flat surface, and a side surface opposite to the flat surface is provided with a plurality of steps (2);

the main body (1) is connected with a mounting position at the higher side of the structure to form a high-position end (101), the other end of the main body is connected with a mounting position at the lower side of the structure to form a low-position end (102), and a step section is arranged between the high-position end (101) and the low-position end (102);

connecting pieces buried in the main body (1) are arranged on the high-position end (101) and the low-position end (102), a plurality of fixing holes (3) are formed in the connecting pieces, and mounting holes (4) corresponding to the fixing holes (3) are formed in the main body (1) towards each mounting position;

a working groove (10) communicated with the nearest fixing hole (3) in the main body (1) is formed in the side face of the main body, and a screw rod is placed inwards from the opening of the working groove (10) and inserted from the fixing hole (3) to penetrate through the mounting hole (4) to be fixedly connected with a mounting position; or the screw rod is inserted from one side of the mounting position and sequentially passes through the mounting hole (4) and the fixing hole (3) to be connected.

2. The modular rapid-assembly stair step structure for prefabricated buildings according to claim 1, wherein: the connecting piece is including setting up first connecting plate (5) at high-order end (101) and setting up second connecting plate (6) at low-order end (102), all be equipped with on first connecting plate (5) and second connecting plate (6) fixed orifices (3) and be equipped with the terminal surface of fixed orifices (3) and be parallel to each other.

3. The modular rapid-assembly stair step structure for prefabricated buildings according to claim 2, wherein: be equipped with connecting hole (12) that transversely run through on main part (1), through connecting hole (12) are inserted and are equipped with rectangular screw rod and fix a plurality of main parts (1) transverse connection and form a ladder step structure.

4. The modular rapid-assembly stair step structure for prefabricated buildings according to claim 2, wherein: the main body (1) is of an integrated structure, and parallel reinforcing steel bars (7) close to parallel surfaces and bent reinforcing steel bars (8) close to the steps (2) are further arranged in the main body; the ends of the parallel steel bars (7) and the bent steel bars (8) are connected with the first connecting plate (5) and the second connecting plate (6);

the first connecting plate (5) comprises a first fixing plate (501) and a first extending plate (502) which are connected with each other and have right-angled included angles, the fixing hole (3) is formed in the first fixing plate (501), and a clamping hole A for fixing the end portions of the parallel reinforcing steel bars (7) and the bent reinforcing steel bars (8) is formed in the first fixing plate (501);

the first extension plate (502) extends inwards along the bent reinforcing steel bar (8) and is provided with a first sleeving piece (503) sleeved on the surface of the bent reinforcing steel bar (8) at the end part of the first extension plate.

5. The modular rapid-assembly stair step structure for prefabricated buildings according to claim 4, wherein: the second connecting plate (6) comprises a second fixing plate (601) and extension structures arranged on two sides of the second fixing plate (601), and the extension structures comprise an upper extension plate (602) and a lower extension plate (603); the fixing holes (3) are formed in the second fixing plate (601), and clamping holes B fixedly connected with the parallel reinforcing steel bars (7) and the bent reinforcing steel bars (8) are further formed in the second fixing plate (601);

the upper extension plate (602) extends inwards along the bent reinforcing steel bar (8) and is provided with an upper sleeving part (604) sleeved with the surface of the bent reinforcing steel bar (8) at the end part;

the lower extension plate (603) extends inwards along the parallel reinforcing steel bars (7) and is provided with a lower sleeving piece (605) sleeved with the surfaces of the parallel reinforcing steel bars (7) at the end part of the lower extension plate.

6. The modular rapid-assembly stair step structure for prefabricated buildings according to claim 4, wherein: the steel bar (8) is bent to correspond to each step (2) and is provided with a reinforcing plate (9), and the reinforcing plate (9) is of an angle steel structure.

7. The modular rapid-assembly stair step structure for prefabricated buildings according to any one of claims 4 to 6, wherein: parallel reinforcing bar (7) and bending reinforcement (8) are equipped with at least three groups along the width direction equidistance of main part (1).

8. The modular rapid-assembly stair step structure for prefabricated buildings according to claim 7, wherein: the parallel reinforcing steel bars (7) and the end parts of the two ends of the bent reinforcing steel bars (8) are bent for 180 degrees to form bent parts, and the first connecting plate (5) and the second connecting plate (6) are fixedly connected with the bent parts.

9. The modular rapid-assembly stair step structure for prefabricated buildings according to any one of claims 4 to 6, wherein: the two side surfaces of the main body (1) are symmetrically provided with working grooves (10).

10. The modular rapid-assembly stair step structure for prefabricated buildings according to any one of claims 4 to 6, wherein: the work groove (10) is arranged on the surfaces of the highest step (2) and the lowest step (2) corresponding to each fixing hole (3).