CN118029843A - Waterproof three doors of prefabricated cabin - Google Patents

Abstract

The invention discloses a waterproof three-door of a prefabricated cabin, which comprises a door frame, a rear-mounted cross beam and a door leaf assembly, wherein the door leaf assembly comprises an upper door leaf, a left door leaf and a right door leaf; the rear beam is detachably arranged at the middle upper part of the door frame in the horizontal direction; the left door leaf comprises a door closer, a main body frame, a flexible bendable part and a vertical structural beam; the door closer with the main body frame is connected, the vertical structure roof beam still through more than two elasticity pressure applying piece with the main body frame is connected, elasticity pressure applying piece is to the vertical structure roof beam exerts the pressure of closed direction, so that vertical structure roof beam and the sealing strip with the edge of right door leaf compresses tightly. The invention can ensure the tightness of the left door leaf and the right door leaf when being closed, and improve the waterproof and dustproof effects.

Description

Waterproof three doors of prefabricated cabin

Technical Field

The application relates to the technical field of buildings, in particular to a waterproof three-door prefabricated cabin.

Background

The prefabricated cabin is a prefabricated cabin type building, and main components are prefabricated by factories and then are directly installed on a construction site. The prefabricated cabin has the advantages of high construction efficiency, short construction period, low production cost and the like, and can be applied to a plurality of different fields. For example, the prefabricated cabin can be applied to equipment rooms in the fields of boosting power transformation, new energy wind power, photovoltaic boosting power transformation and the like.

When the prefabricated cabin is applied to a power transformation place, large-scale equipment such as a grounding transformer, a small resistor, a dry-type transformer, an SVG and the like are usually arranged in the cabin, and the large-scale equipment has high requirements on waterproofing and dust prevention of doors and windows of the prefabricated cabin. And large-scale equipment such as dry-type transformer, SVG are great in size, and the size of these equipment often exceeds 2.2m in width, and the height is more than 2.6 m. To facilitate the access of the equipment to the prefabricated compartment, the size of the door of the prefabricated compartment must be larger than the size of the equipment. The large-size cabin door is easy to deform in the production and transportation processes, so that the IP grade of the cabin door after being closed cannot meet the standard requirement, water seepage or dust entering is easy to occur, and the normal operation of equipment is affected. In the prior art, the waterproof performance of the cabin door is mainly improved by increasing the rigidity of the cabin door and the number of sealing strips, but the technical problem that the waterproof grade is insufficient due to the deformation of the cabin door still cannot be effectively solved, particularly, in the transportation process, the larger the rigidity of the cabin door is, the larger the weight of the cabin door is, and the larger the impact force of collision is in the transportation process, and the deformation still easily occurs. Therefore, how to improve the waterproof grade of a large-sized cabin door has become a technical problem to be solved in the art.

Disclosure of Invention

In view of the problems, the application provides a waterproof three-door of a prefabricated cabin, which is used for solving the technical problem that the existing large-size cabin door is easy to deform and the waterproof grade is insufficient.

In order to achieve the above purpose, the waterproof three-door of the prefabricated cabin is provided, the prefabricated cabin is formed by assembling factory prefabricated parts and comprises an outer wall and an inclined cabin top, and the waterproof three-door of the prefabricated cabin is arranged on a door opening of the outer wall; the waterproof three-door of the prefabricated cabin comprises a door frame, a rear-mounted cross beam and a door leaf assembly, wherein the door leaf assembly comprises an upper door leaf, a left door leaf and a right door leaf;

The upper edge of the upper door leaf is connected to the top of the door frame through a hinge; the left door leaf and the right door leaf are respectively connected to two sides of the door frame through hinges; the rear-mounted cross beam is detachably arranged at the middle upper part of the door frame in a horizontal direction; when the door leaf assembly is closed, the lower edge of the upper door leaf, the upper edge of the left door leaf and the upper edge of the right door leaf are respectively propped against the rear mounting cross beam, and the left door leaf is propped against the right door leaf;

The left door leaf comprises a door closer, a main body frame, a flexible bendable part and a vertical structural beam; the door closer is connected with the main body frame and is used for driving the left door leaf to be closed;

The vertical structural beam is vertically arranged on the right side of the left door leaf and is connected to the left side of the main body frame through the flexible bendable part; an L-shaped sealing edge is arranged on one side, close to the right door leaf, of the vertical structural beam, and a sealing strip is arranged on the L-shaped sealing edge;

The vertical structure beam is also connected with the main body frame through more than two elastic pressing pieces, the elastic pressing pieces apply pressure in a closing direction to the vertical structure beam, and the pressure is used for adaptively adjusting the planeness of the vertical structure beam on a vertical plane, so that the sealing strip is tightly pressed with the edge of the right door leaf to compensate for closing degree deviation caused by deformation of the left door leaf and/or the right door leaf;

The elastic pressing piece is a construction site installation type accessory and comprises an arc-shaped elastic piece, one end of the arc-shaped elastic piece is connected with the first surface of the main body frame, the other end of the arc-shaped elastic piece is connected with the first surface of the vertical structural beam, and the first surface is the surface of the left door leaf far away from the closing direction; the arc-shaped elastic sheet applies pressure pointing to the middle of the arc of the vertical structural beam, so that the vertical structural beam is close to the closing direction relative to the main body frame when the left door leaf is in an open state.

In some embodiments, the elastic pressing member further includes a first connection block for being fixed to the main body frame and a second connection block for being fixed to the vertical structural beam; one end of the arc-shaped elastic piece is connected with the first connecting block, and the second connecting block is provided with more than two clamping grooves along the width direction of the left door leaf; the other end of the arc-shaped elastic sheet can be connected with any clamping groove so as to adjust the deformation of the arc-shaped elastic sheet to generate pressure with different magnitudes.

In some embodiments, the flexible bendable portion is made of rubber or silicone rubber with a cushioning effect, and the width of the flexible bendable portion is not less than 15 cm.

In some technical schemes, two sides of the middle upper part of the door frame are provided with connecting grooves connected with the end parts of the rear-mounted cross beam, and the groove walls of the connecting grooves are provided with lock holes; the end part of the rear-mounted cross beam is provided with an elastic lock pin, and the elastic lock pin is locked with the lock hole when the end part of the rear-mounted cross beam is inserted into the connecting groove; the elastic lock pin can retract and unlock with the lock hole, so that the rear-mounted cross beam is taken down from the door frame;

Or one end of the rear cross beam is connected with the door frame through a hinge, the rear cross beam can be opened or closed by rotating horizontally around the hinge, and when the rear cross beam is closed, the other end of the rear cross beam is inserted into a connecting groove on the door frame and is locked through an elastic locking pin.

In some technical schemes, an upper edge of the rear-mounted cross beam is provided with an upper sealing edge which abuts against a lower edge of the upper door leaf, a lower edge of the rear-mounted cross beam is provided with a lower sealing edge which abuts against an upper edge of the left door leaf and an upper edge of the right door leaf, and sealing strips are arranged on the upper sealing edge and the lower sealing edge.

In some embodiments, the door frame has a width greater than or equal to 2.2 meters and a height greater than or equal to 2.6 meters.

In some technical schemes, the lower edge of the upper door leaf is provided with a first locking bolt matched with the rear-mounted cross beam; the right door leaf is provided with a second locking bolt, and the second locking bolt comprises an upper bolt positioned at the upper edge of the right door leaf and a lower bolt positioned at the lower edge of the right door leaf;

the right side of left door leaf is provided with the tool to lock with right door leaf locking.

In some technical schemes, the upper door leaf, the left door leaf and the right door leaf all comprise skins, and the skins are filled with heat insulation materials.

Compared with the prior art, the waterproof three-door of the prefabricated cabin of the technical scheme comprises a door frame, a rear-mounted cross beam and a door leaf assembly, wherein the door leaf assembly comprises an upper door leaf, a left door leaf and a right door leaf, so that the size of each door leaf in each scheme is smaller under the condition of the door frame with the same area compared with the traditional single door and double door, deformation in the production and transportation processes is less prone to occurring, and the rear-mounted cross beam is in sealing connection with the lower edge of the upper door leaf and the upper edge of the left door leaf and the upper edge of the right door leaf, so that the tightness of the door leaf is guaranteed. And the rear-mounted cross beam is mounted on the door frame after equipment enters the prefabricated cabin, so that large-size equipment can conveniently enter the prefabricated cabin. In the technical scheme, the left door leaf comprises a door closer, a main body frame, a flexible bendable part and a vertical structural beam; the door closer with main body frame connects for the drive left door leaf is closed, the vertical structure roof beam still through more than two elasticity pressure applying piece with main body frame connects, elasticity pressure applying piece to the pressure of vertical structure roof beam applied closure direction, pressure is used for the self-adaptation adjustment the planarization of vertical structure roof beam on vertical plane makes the sealing strip with the edge of right door leaf compresses tightly, in order to compensate the closure degree deviation that left door leaf and/or right door leaf warp and lead to. Therefore, the degree of freedom of the vertical structure beam can be released through the flexible bendable part, the vertical structure beam and the sealing strips on the vertical structure beam can be tightly pressed with the edge of the right door leaf through the elastic pressing piece, and the tightness of the left door leaf and the right door leaf when the left door leaf and the right door leaf are closed can be ensured even when the main body frame of the left door leaf or the right door leaf deforms within a certain range, so that the waterproof and dustproof effects are achieved.

The foregoing summary is merely an overview of the present application, and may be implemented according to the text and the accompanying drawings in order to make it clear to a person skilled in the art that the present application may be implemented, and in order to make the above-mentioned objects and other objects, features and advantages of the present application more easily understood, the following description will be given with reference to the specific embodiments and the accompanying drawings of the present application.

Drawings

The drawings are only for purposes of illustrating the principles, implementations, applications, features, and effects of the present application and are not to be construed as limiting the application.

In the drawings of the specification:

Fig. 1 is a schematic view of a waterproof three-door structure of a prefabricated cabin according to an embodiment;

FIG. 2 is a schematic view of a waterproof three-door roof structure of a prefabricated cabin according to an embodiment;

FIG. 3 is a schematic view of a waterproof three-door bottom structure of a prefabricated cabin according to an embodiment;

FIG. 4 is a schematic view of a structure of an elastic pressing member according to an embodiment;

Fig. 5 is a cross-sectional view of the rear cross member, the upper door leaf and the left door leaf according to the embodiment;

fig. 6 is a cross-sectional view showing the connection of the door frame and the upper door leaf according to the embodiment;

FIG. 7 is a schematic diagram of a portion A of FIG. 3 in a first state;

FIG. 8 is a schematic diagram of a second state of the portion A in FIG. 3;

reference numerals referred to in the above drawings are explained as follows:

1.a door frame; 11. sealing edges;

2. A beam is arranged at the rear; 211. upper edge sealing; 212. sealing the lower edge;

3. A door leaf assembly; 31. an upper door leaf; 32. left door leaf; 33. a right door leaf; 311. a first locking bolt; 312. a hinge; 321. a door closer; 322. an elastic pressing member; 323. a main body frame; 324. sealing edges; 325. a sealing strip; 326. a flexible bendable portion; 327. a vertical structural beam; 331. a second locking bolt; 332. a boss;

3221. an arc-shaped elastic sheet; 3222. a first connection block; 3223. a second connection block; 3224. a hinge shaft; 3225. a clamping groove;

4. An outer wall;

Detailed Description

In order to describe the possible application scenarios, technical principles, practical embodiments, and the like of the present application in detail, the following description is made with reference to the specific embodiments and the accompanying drawings. The embodiments described herein are only for more clearly illustrating the technical aspects of the present application, and thus are only exemplary and not intended to limit the scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of the phrase "in various places in the specification are not necessarily all referring to the same embodiment, nor are they particularly limited to independence or relevance from other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment may be combined in any manner to form a corresponding implementable technical solution.

Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application pertains; the use of related terms herein is for the purpose of describing particular embodiments only and is not intended to limit the application.

In the description of the present application, the term "and/or" is a representation for describing a logical relationship between objects, which means that three relationships may exist, for example a and/or B, representing: there are three cases, a, B, and both a and B. In addition, the character "/" herein generally indicates that the front-to-back associated object is an "or" logical relationship.

In the present application, terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual number, order, or sequence of such entities or operations.

Without further limitation, the use of the terms "comprising," "including," "having," or other like open-ended terms in this application are intended to cover a non-exclusive inclusion, such that a process, method, or article of manufacture that comprises a list of elements does not include additional elements in the process, method, or article of manufacture, but may include other elements not expressly listed or inherent to such process, method, or article of manufacture.

As in the understanding of "review guidelines," the expressions "greater than", "less than", "exceeding" and the like are understood to exclude this number in the present application; the expressions "above", "below", "within" and the like are understood to include this number. Furthermore, in the description of embodiments of the present application, the meaning of "a plurality of" is two or more (including two), and similarly, the expression "a plurality of" is also to be understood as such, for example, "a plurality of" and the like, unless specifically defined otherwise.

In the description of embodiments of the present application, spatially relative terms such as "center," "longitudinal," "transverse," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," etc., are used herein as a basis for the description of the embodiments or as a basis for the description of the embodiments, and are not intended to indicate or imply that the devices or components referred to must have a particular position, a particular orientation, or be configured or operated in a particular orientation and therefore should not be construed as limiting the embodiments of the present application.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "affixed," "disposed," and the like as used in the description of embodiments of the application should be construed broadly. For example, the "connection" may be a fixed connection, a detachable connection, or an integral arrangement; the device can be mechanically connected, electrically connected and communicated; it can be directly connected or indirectly connected through an intermediate medium; which may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the embodiments of the present application can be understood by those skilled in the art to which the present application pertains according to circumstances.

Referring to fig. 1 to 8, the present embodiment discloses a waterproof three-door of a prefabricated cabin. The prefabricated cabin comprises an outer wall 4 and an inclined cabin roof (namely a roof), the waterproof three-door of the prefabricated cabin is arranged on the outer wall 4, and partial water accumulation at the top can be prevented by adopting the inclined cabin roof. The main components of the prefabricated cabin are prefabricated by factories and then are directly installed on a construction site. The prefabricated cabin can be of a single-layer tiled structure or a multi-layer three-dimensional structure, and in order to achieve good heat insulation and heat preservation effects, the outer wall 4 of the prefabricated cabin can be of a multi-layer heat insulation material structure, and specifically, the multi-layer heat insulation material structure can be an air gap, rock wool and a foaming layer. The cabin body of the prefabricated cabin can be made of a light steel portal frame structure, the base framework is made of high-strength materials, the upright posts are made of multiple forming processes to ensure structural strength and waterproof performance, the four-side maintenance structure is made of high-strength structural materials, the top cover is made of plates and sectional materials in flexible collocation, the most reinforced combination of bearing, stress and moment of inertia is achieved, the characteristics of high strength and good rigidity are achieved, and the requirements of wind resistance and compression resistance of the prefabricated cabin are met. The prefabricated cabin can be applied to installation sites of power transformation equipment such as boosting power transformation, new energy wind power, photovoltaic boosting power transformation and the like, so that the prefabricated cabin has high requirements on water resistance and dust resistance of doors and windows of the prefabricated cabin.

As shown in fig. 1, the waterproof three-door of the prefabricated cabin comprises a door frame 1, a rear-mounted cross beam 2 and a door leaf assembly 3, wherein the door leaf assembly 3 comprises an upper door leaf 31, a left door leaf 32 and a right door leaf 33; the upper edge of the upper door leaf 31 is connected to the top of the door frame 1 through a hinge 312; the left door leaf 32 and the right door leaf 33 are respectively connected to two sides of the door frame 1 through hinges. The rear beam 2 is detachably arranged at the middle upper part of the door frame 1 in the horizontal direction; when the door leaf assembly 3 is closed, the lower edge of the upper door leaf 31, the upper edge of the left door leaf 32 and the upper edge of the right door leaf 33 respectively abut against the rear mounting cross beam 2, and the left door leaf 32 abuts against the right door leaf 33; the left door leaf 32 includes a door closer 321, a main body frame 323, a flexible bendable portion 326, and a vertical structural beam 327; the door closer 321 is connected with the main body frame 323 and is used for driving the left door leaf 32 to be closed; the vertical structural beam 327 is vertically disposed on the right side of the left door leaf 32 and is connected to the left side of the main body frame 323 by the flexible bendable portion 326; an L-shaped sealing edge 324 is arranged on one side of the vertical structural beam 327, which is close to the right door leaf 33, and a sealing strip 325 is arranged on the L-shaped sealing edge 324; the vertical structural beam 327 is further connected to the main body frame 323 by two or more elastic pressing members 322, and the elastic pressing members 322 apply pressure in a closing direction to the vertical structural beam 327, so that the vertical structural beam 327 and the sealing strip 325 are pressed against the edge of the right door leaf 33. As shown in fig. 7, a boss 332 is disposed on the left side of the right door leaf 33, the boss 332 is adapted to the L-shaped sealing edge 324, and when the left door leaf is closed with the right door leaf, the sealing strip 325 contacts with the boss 332.

In some embodiments, the upper door leaf 31, the left door leaf and the right door leaf each comprise a skin, which is filled with a thermal insulation material. In some embodiments, the flexible bendable portion 326 is made of rubber or silicone rubber having a cushioning effect, and the width of the flexible bendable portion 326 is not less than 15 cm.

As shown in fig. 2 and 3, the door frame 1 is mounted on the outer wall 4, wherein the door frame may be made of metal or alloy such as aluminum, aluminum alloy, steel, etc. The rear-mounted beam 2 is horizontally arranged on the door frame 1, and is arranged on the door frame 1 after the power transformation equipment in the prefabricated cabin enters the field, so that the rear-mounted beam is called. Before the rear-mounted cross beam 2 is mounted on the door frame 1, the door frame 1 is not limited by the rear-mounted cross beam 2 in the height direction, so that large-size power transformation is facilitated to enter the prefabricated cabin.

As shown in fig. 1 and 6, the top of the upper door 31 is connected to the door frame 1 by a hinge 312, the left side of the left door is connected to the door frame by a hinge, and the right side of the right door is connected to the door frame by a hinge, so that the upper door can be opened upward, and the left door and the right door can be opened to both sides relatively. As shown in fig. 5, when the rear cross member is mounted on the door frame, both ends of the rear cross member 2 are fixed to the door frame, the lower edge of the upper door leaf 31 abuts against the upper edge of the rear cross member 2, and the upper edge of the left door leaf 32 and the upper edge of the right door leaf abut against the rear cross member 2, respectively. As shown in fig. 6, the lower side of the beam of the door frame 1 is provided with a sealing edge 11, and the sealing edge 11 is in sealing fit with the top of the upper door leaf 31. Therefore, the tightness of the three-door after being closed can be ensured.

In this embodiment, the left door leaf 32 is particularly modified in order to prevent deformation of the door leaf during transportation, affecting the tightness of the door leaf assembly after closing. The existing door leaf mainly comprises an inner frame, a skin on the outer surface and a heat insulation material filled between the skin and the frame. As shown in fig. 7 and 8, the left door leaf 32 is added with a flexible bendable portion 326, a vertical structural beam 327, and a plurality of elastic pressure applying pieces 322. Wherein, vertical structure roof beam 327 is provided with banding 324 of L shape, is provided with sealing strip 325 on the banding 324, and flexible bendable portion 326 sets up between main body frame 323 and vertical structure roof beam 327. The flexible bendable portion 326 applies pressure in a closing direction to the vertical structural beam, and the pressure is used for adaptively adjusting the flatness of the vertical structural beam 327 on a vertical plane, so that the sealing strip is pressed against the edge of the right door leaf, and the closing degree deviation caused by deformation of the left door leaf and/or the right door leaf is compensated. In this embodiment, the vertical structural beams 327 are spatially positioned relative to the main body frame 323 (i.e., the flatness of the vertical structural beams in the vertical plane is adjusted) by the flexible bendable portions 326. And the L-shaped sealing edge 324 on the vertical structural beam 327 can be tightly connected with the right door leaf in a sealing way under the action of the pressure generated by the plurality of elastic pressure applying pieces 322.

In some embodiments, the elastic pressing member 322 is a construction site installation type fitting, and includes an arc-shaped elastic piece 3221, wherein the arc-shaped elastic piece 3221 may be made of an elastic arc-shaped steel sheet, one end of the arc-shaped elastic piece 3221 is connected to a first surface of the main body frame 323, and the other end of the arc-shaped elastic piece is connected to a first surface of the vertical structural beam 327, and the first surface is a surface of the left door leaf away from the closing direction; the arc spring 3221 applies pressure to the vertical structural beam 327 pointing to the middle of the arc, so that the vertical structural beam 327 approaches to the closing direction relative to the main frame 323 when the left door leaf is in the open state.

As shown in fig. 4, in some embodiments, the resilient biasing member 322 further includes a first connection block 3222 and a second connection block 3223. The first connection block 3222 is used for being fixed to the main body frame 323, and the second connection block 3223 is used for being fixed to the vertical structural beam; one end of the arc spring 3221 is connected with the first connection block 3222, and the second connection block 3223 is provided with more than two clamping grooves 3225 along the width direction of the left door leaf; the other end of the arc spring plate may be connected to any one of the clamping grooves 3225, so as to adjust the deformation of the arc spring plate 3221 to generate the pressure with different magnitudes. Specifically, one end of the arc-shaped elastic sheet 3221 is provided with a hinge shaft 3224, and is movably connected with the first connecting block 3222 through the hinge shaft 3224.

Therefore, according to the deformation of the left door leaf or the right door leaf, the arc-shaped elastic sheet 3221 can be adjusted to be clamped with different clamping grooves 3225, so that different pressures are generated by the elastic pressing pieces 322 on the left door leaf, and the L-shaped sealing edges 324 on the vertical structural beams 327 can be tightly connected with the right door leaf in a sealing manner.

In some embodiments, two sides of the middle upper part of the door frame 1 are provided with connecting grooves connected with the end parts of the rear-mounted cross beam 2, and the groove walls of the connecting grooves are provided with locking holes; the end part of the rear cross beam 2 is provided with an elastic lock pin, and the elastic lock pin is locked with the lock hole when the end part of the rear cross beam 2 is inserted into the connecting groove; the elastic lock pin can retract to unlock with the lock hole, so that the rear-mounted cross beam 2 is taken down from the door frame 1.

In other embodiments, one end of the rear-mounted beam 2 is connected with the door frame 1 through a hinge, the rear-mounted beam 2 can be horizontally rotated around the hinge to be opened or closed, and when the rear-mounted beam 2 is closed, the other end of the rear-mounted beam 2 is inserted into a connecting groove on the door frame 1 and is locked through an elastic locking pin.

In some embodiments, an upper edge of the rear cross member 2 is provided with an upper sealing edge 211 that abuts against a lower edge of the upper door leaf 31, a lower edge of the rear cross member 2 is provided with a lower sealing edge 212 that abuts against an upper edge of the left door leaf and an upper edge of the right door leaf 33, and sealing strips are provided on the upper sealing edge 211 and the lower sealing edge 212.

In some embodiments, the door frame 1 has a width of greater than or equal to 2.2 meters and a height of greater than or equal to 2.6 meters.

In some embodiments, the lower edge of the upper door leaf 31 is provided with a first locking latch 311 that cooperates with the rear mounted cross beam; the right door leaf is provided with a second locking bolt 331, and the second locking bolt 331 comprises an upper bolt positioned at the upper edge of the right door leaf and a lower bolt positioned at the lower edge of the right door leaf; the right side of left door leaf is provided with the tool to lock with right door leaf locking.

Finally, it should be noted that, although the embodiments have been described in the text and the drawings, the scope of the application is not limited thereby. The technical scheme generated by replacing or modifying the equivalent structure or equivalent flow by utilizing the content recorded in the text and the drawings of the specification based on the essential idea of the application, and the technical scheme of the embodiment directly or indirectly implemented in other related technical fields are included in the patent protection scope of the application.

Claims (8)

1. The waterproof three-door of the prefabricated cabin is characterized in that the prefabricated cabin is formed by splicing factory prefabricated parts and comprises an outer wall and an inclined cabin top, and the waterproof three-door of the prefabricated cabin is arranged on a door opening of the outer wall; the waterproof three-door of the prefabricated cabin comprises a door frame, a rear-mounted cross beam and a door leaf assembly, wherein the door leaf assembly comprises an upper door leaf, a left door leaf and a right door leaf;

The upper edge of the upper door leaf is connected to the top of the door frame through a hinge; the left door leaf and the right door leaf are respectively connected to two sides of the door frame through hinges; the rear-mounted cross beam is detachably arranged at the middle upper part of the door frame in a horizontal direction; when the door leaf assembly is closed, the lower edge of the upper door leaf, the upper edge of the left door leaf and the upper edge of the right door leaf are respectively propped against the rear mounting cross beam, and the left door leaf is propped against the right door leaf;

the left door leaf comprises a door closer, a main body frame, a flexible bendable part and a vertical structural beam; the door closer is connected with the main body frame and is used for driving the left door leaf to be closed;

The vertical structural beam is vertically arranged on the right side of the left door leaf and is connected to the left side of the main body frame through the flexible bendable part; an L-shaped sealing edge is arranged on one side, close to the right door leaf, of the vertical structural beam, and a sealing strip is arranged on the L-shaped sealing edge;

The vertical structure beam is also connected with the main body frame through more than two elastic pressing pieces, the elastic pressing pieces apply pressure in a closing direction to the vertical structure beam, and the pressure is used for adaptively adjusting the planeness of the vertical structure beam on a vertical plane, so that the sealing strip is tightly pressed with the edge of the right door leaf to compensate for closing degree deviation caused by deformation of the left door leaf and/or the right door leaf;

The elastic pressing piece is a construction site installation type accessory and comprises an arc-shaped elastic piece, one end of the arc-shaped elastic piece is connected with the first surface of the main body frame, the other end of the arc-shaped elastic piece is connected with the first surface of the vertical structural beam, and the first surface is the surface of the left door leaf far away from the closing direction; the arc-shaped elastic sheet applies pressure pointing to the middle of the arc of the vertical structural beam, so that the vertical structural beam is close to the closing direction relative to the main body frame when the left door leaf is in an open state.

2. The prefabricated cabin waterproof three door of claim 1, wherein the elastic pressing member further comprises a first connection block for being fixed to the main body frame and a second connection block for being fixed to the vertical structural beam; one end of the arc-shaped elastic piece is connected with the first connecting block, and the second connecting block is provided with more than two clamping grooves along the width direction of the left door leaf; the other end of the arc-shaped elastic sheet can be connected with any clamping groove so as to adjust the deformation of the arc-shaped elastic sheet to generate pressure with different magnitudes.

3. The waterproof three-door of the prefabricated cabin according to claim 1, wherein the flexible bendable portion is made of rubber or silica gel having a cushioning effect, and the width of the flexible bendable portion is not less than 15 cm.

4. The waterproof three-door of the prefabricated cabin according to claim 1, wherein connecting grooves connected with the end parts of the rear-mounted cross beam are formed in two sides of the middle upper part of the door frame, and locking holes are formed in the groove walls of the connecting grooves; the end part of the rear-mounted cross beam is provided with an elastic lock pin, and the elastic lock pin is locked with the lock hole when the end part of the rear-mounted cross beam is inserted into the connecting groove; the elastic lock pin can retract and unlock with the lock hole, so that the rear-mounted cross beam is taken down from the door frame;

Or one end of the rear cross beam is connected with the door frame through a hinge, the rear cross beam can be opened or closed by rotating horizontally around the hinge, and when the rear cross beam is closed, the other end of the rear cross beam is inserted into a connecting groove on the door frame and is locked through an elastic locking pin.

5. The prefabricated cabin waterproof three door according to claim 4, wherein an upper edge of the rear-mounted cross beam is provided with an upper sealing edge which abuts against a lower edge of the upper door leaf, a lower edge of the rear-mounted cross beam is provided with a lower sealing edge which abuts against an upper edge of the left door leaf and an upper edge of the right door leaf, and sealing strips are arranged on the upper sealing edge and the lower sealing edge.

6. The prefabricated cabin waterproof three door according to claim 1, wherein the width of the door frame is greater than or equal to 2.2 meters and the height is greater than or equal to 2.6 meters.

7. The prefabricated cabin waterproof three door according to claim 1, wherein the lower edge of the upper door leaf is provided with a first locking latch which is matched with the rear-mounted cross beam; the right door leaf is provided with a second locking bolt, and the second locking bolt comprises an upper bolt positioned at the upper edge of the right door leaf and a lower bolt positioned at the lower edge of the right door leaf;

the right side of left door leaf is provided with the tool to lock with right door leaf locking.

8. The prefabricated cabin waterproof three door according to claim 1, wherein the upper door leaf, the left door leaf and the right door leaf each comprise a skin, and the interior of the skin is filled with a heat insulation material.