A joint waterproof structure for prefabricated buildings

Abstract

The present invention relates to a joint waterproof structure for a prefabricated building, which includes a first wall body and a second wall body. A left-side sealing member is provided at the right end of the first wall body, which includes a first elastic plate and a second elastic plate arranged at intervals in the front and rear directions. The left ends of the first elastic plate and the second elastic plate are elastic overhanging ends that can elastically deform in the front and rear directions. A first arc-shaped plate is provided at the left end of the first elastic plate, and a second arc-shaped plate is provided at the left end of the second elastic plate. A column-shaped accommodating cavity is formed between the first arc-shaped plate and the second arc-shaped plate. A right-side metal connecting member is provided at the left end with a right-side sealing member. A sealing column with an axis extending in the up and down direction for entering the column-shaped accommodating cavity through a through port is provided at the left end of the convex rib of the right-side sealing member. A rubber layer for sealingly cooperating with the inner wall of the column-shaped accommodating cavity is vulcanized and fixed on the outer periphery of the sealing column. The present invention solves the technical problem in the prior art that at the joint, the seal completely relies on its own elastic deformation ability to achieve waterproof sealing, but the sealing effect is limited.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated building construction, and in particular to a joint waterproof structure of a prefabricated building. Background Art

[0002] Prefabricated construction involves the production of prefabricated components in a factory and their subsequent assembly on-site. Its numerous advantages include shorter construction periods, faster construction times, and minimal pollution and environmental impact. As a result, prefabricated construction is gaining increasing attention and popularity.

[0003] When the prefabricated walls of an assembled building are connected, prefabricated wall joints will be formed. After the two prefabricated walls are spliced, waterproofing treatment is required at the joints. The waterproofing of the joints is a key position that affects the waterproof performance of the assembled building.

[0004] Existing waterproofing treatments, such as the "Waterproof Structure of Prefabricated Building Joints" disclosed in Chinese patent CN218204973U, include a first wall and a second wall and a joint formed by splicing the first wall and the second wall. The opposite end faces of the first wall and the second wall are respectively provided with a ridge and a groove, and the ridge and the groove are plugged together. A water stop plate is provided on the side of the ridge facing away from the first wall, and a sealing member for abutting and cooperating with the water stop plate is provided in the groove.

[0005] The problem with the existing waterproof structure is that the sealing principle of the seal is to rely on its own elastic deformation to achieve sealing. In the prior art, the seal is installed on a rigid base that cannot be elastically deformed, and the sealing is achieved entirely by relying on the elastic deformation of the seal itself. The elastic deformation capacity of the seal is limited, which also leads to the ineffective sealing effect of the seal. In addition, during the assembly process of the two walls, since the installation base of the seal is a rigid base that cannot be elastically deformed, the wall assembly process has very high requirements. If the two walls move too close, the seal may be excessively squeezed by the wall and fail. Summary of the Invention

[0006] The purpose of the present invention is to provide a joint waterproof structure for prefabricated buildings to solve the technical problem in the prior art that the sealing members at the joints completely rely on their own elastic deformation ability to achieve waterproof sealing, but the sealing effect is limited.

[0007] In order to solve the above technical problems, the technical solution of a joint waterproof structure of an assembled building in the present invention is as follows:

[0008] A joint waterproof structure for prefabricated buildings, comprising a first wall and a second wall arranged left and right. A left metal connector is provided at the right end of the first wall, and a right metal connector is provided at the left end of the second wall. The right end of the left metal connector has one or at least two left sealing members arranged at intervals in the front-back direction. The left sealing member includes a first elastic plate and a second elastic plate arranged at intervals in the front-back direction. The left ends of the first elastic plate and the second elastic plate are elastic overhanging ends that can elastically deform in the front-back direction. A flared structure with an increasing distance from left to right is formed between the first elastic plate and the second elastic plate. The left end of the first elastic plate is provided with a first arc plate with an axis extending in the up-down direction, and the left end of the second elastic plate is provided with a second arc plate arranged coaxially with the first arc plate and spaced from the left end of the first arc plate. A column-shaped accommodating cavity is formed between the first arc plate and the second arc plate. The connection positions of the first elastic plate and the first arc plate and the connection positions of the second elastic plate and the second arc plate form a through port with a diameter smaller than the diameter of the column-shaped accommodating cavity. The left end of the right metal connector is provided with a right sealing member corresponding to the left sealing member. The right sealing member includes a convex rib extending in the up-down direction adapted to the flared structure. The left end of the convex rib is provided with a sealing column with an axis extending in the up-down direction for entering the column-shaped accommodating cavity through the through port. The diameter of the sealing column is larger than the inner diameter of the column-shaped accommodating cavity in the natural state of the first elastic plate and the second elastic plate. A rubber layer for sealingly cooperating with the inner wall of the column-shaped accommodating cavity is vulcanized and fixed on the outer periphery of the sealing column.

[0009] Further, the left sealing member further includes a front vertical plate and a rear vertical plate arranged at intervals in the front-back direction. The left ends of the front vertical plate and the rear vertical plate are fixed on the left metal connector. The right end of the first elastic plate is connected to the right end of the front vertical plate, and the right end of the second elastic plate is connected to the right end of the rear vertical plate.

[0010] Further, there are two left sealing members, and the two left sealing members are a front sealing member and a rear sealing member arranged at intervals in the front-back direction.

[0011] Further, the right end of the rear vertical plate of the front sealing member can elastically deform in the front-back direction, and the right end of the front vertical plate of the rear sealing member can elastically deform in the front-back direction. A pull belt is arranged between the right end of the rear vertical plate of the front sealing member and the right end of the front vertical plate of the rear sealing member. The joint waterproof structure further includes a pull belt scissors for cutting the pull belt when the first wall and the second wall move relative to each other. The pull belt scissors include a left knife body arranged on the left metal connector and a right knife body arranged on the right metal connector.

[0012] Further, during the process of the second wall moving leftward relative to the first wall, the right knife body pushes the pull belt leftward, and the pull belt drives the right ends of the rear vertical plate of the front sealing member and the front vertical plate of the rear sealing member to swing relative to each other, thereby expanding the width of the through port.

[0013] Furthermore, the left metal connecting member further includes a U-shaped left metal buckle plate with an opening facing left and fixed to the right end of the first wall body. The first wall body includes a first steel bar skeleton and first precast concrete poured and fixed around the first steel bar skeleton and on the left side of the left metal buckle plate. A connecting bar extending in the left-right direction and welded to the first steel bar skeleton is fixed to the left side of the left metal buckle plate. The left sealing member is arranged on the right side surface of the left metal buckle plate.

[0014] The beneficial effects of the present invention are as follows: In the present invention, the first wall body and the second wall body are not completely reinforced concrete structures. Instead, a left metal connecting member is provided at the right end of the first wall body, and a right metal connecting member is provided at the left end of the second wall body. After adopting the metal connecting member structure, an elastic plate structure can be used. When the first wall body and the second wall body need to be assembled on site, the second wall body moves toward the first wall body in the left-right direction. The sealing column on the second wall body enters the column-shaped accommodating cavity formed between the first arc-shaped plate and the second arc-shaped plate from right to left through the through hole. After the sealing column enters the column-shaped accommodating cavity, the rubber layer on the sealing column is in sealing cooperation with the inner walls of the column-shaped accommodating cavity, that is, the inner walls of the first arc-shaped plate and the second arc-shaped plate, so as to achieve waterproofing. Since the diameter of the sealing column is larger than the inner diameter of the column-shaped accommodating cavity in the natural state of the first elastic plate and the second elastic plate, in the present invention, in addition to the elastic deformation of the rubber layer itself, the first elastic plate and the second elastic plate will also generate elastic deformation force to squeeze the rubber layer, thereby improving the waterproof sealing effect at the joint position.

[0015] Furthermore, since the size of the through hole is smaller than the diameter of the sealing column, in order to reduce the extrusion wear of the through hole on the rubber layer when the sealing column passes through the through hole, in the present invention, the right end of the rear vertical plate of the front sealing member can elastically deform in the front-rear direction, and the right end of the front vertical plate of the rear sealing member can elastically deform in the front-rear direction. During the process of the second wall body moving leftward relative to the first wall body, the right blade body pushes the pull belt leftward. The pull belt drives the rear vertical plate of the front sealing member and the right end of the front vertical plate of the rear sealing member to swing relatively, thereby expanding the width of the through hole, so as to reduce the extrusion wear of the through hole on the rubber layer. After the sealing column enters the column-shaped accommodating cavity, the right blade body and the left blade body contact and cooperate to cut the pull belt. The rear vertical plate of the front sealing member resets, and the front vertical plate of the rear sealing member resets, and the sealing effect between the column-shaped accommodating cavity and the sealing column is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the drawings, several embodiments of the present disclosure are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0017] Figure 1It is a schematic structural diagram of an embodiment of the present invention;

[0018] Figure 2 It is Figure 1 a schematic structural diagram of the second wall in

[0019] Figure 3 It is Figure 1 a schematic structural diagram of the first wall in

[0020] Figure 4 It is Figure 3 a schematic structural diagram of the front sealing member in

[0021] 1. First wall; 2. Second wall; 3. First wall steel bar framework; 4. First precast concrete; 5. Connecting bars; 6. Left metal buckle plate; 7. Front sealing member; 8. Rear sealing member; 9. Sealing column; 10. Right sealing member; 11. Pulling belt; 12. Left knife body; 13. Right knife body; 14. Convex rib; 15. Blade of the right knife body; 16. Front vertical plate; 17. Rear vertical plate; 18. First elastic plate; 19. Second elastic plate; 20. First arc plate; 21. Second arc plate; 22. Column-shaped accommodating cavity; 23. Through port; 24. Flared structure; 25. Rubber layer; 26. Cylindrical body. Specific embodiments

[0022] For the convenience of understanding the present invention, the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments. The preferred embodiments of the present invention are given in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present invention more thorough and comprehensive.

[0023] It should be noted that unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention.

[0024] An embodiment of the joint waterproof structure of a prefabricated building in the present invention is as Figures 1 to 4 shown: It includes a first wall 1 and a second wall 2 arranged left and right. A left metal connecting piece is arranged at the right end of the first wall 1, and a right metal connecting piece is arranged at the left end of the second wall.

[0025] The first wall 1 and the second wall 2 are prefabricated and processed in the factory. Taking the first wall as an example, the left metal connector further includes a U-shaped left metal buckle plate 6 with an opening facing left and fixed to the right end of the first wall. The first wall includes a first steel bar framework and a first precast concrete 4 poured and fixed around the first steel bar framework 3 and on the left side of the left metal buckle plate. A connecting bar 5 extending in the left-right direction and welded to the first steel bar framework is fixed to the left side of the left metal buckle plate. Specifically, the connecting bar is welded to a longitudinal steel bar extending in the left-right direction of the first steel bar framework. The left sealing member is arranged on the right side surface of the left metal buckle plate. The right metal connector is a U-shaped metal buckle plate structure with an opening facing right, which will not be elaborated here.

[0026] Two left sealing members are arranged at intervals in the front-back direction on the right side surface of the left metal buckle plate. The two left sealing members are respectively a front sealing member 7 and a rear sealing member 8 arranged at intervals front and back. The front sealing member 7 and the rear sealing member 8 have the same structure.

[0027] The left sealing member includes a first elastic plate 18 and a second elastic plate 19 arranged at intervals front and back. The left ends of the first elastic plate 18 and the second elastic plate 19 are elastic overhanging ends that can elastically deform in the front-back direction. An expanding structure 24 with an increasing distance from left to right is formed between the first elastic plate and the second elastic plate. A first arc-shaped plate 20 with an axis extending in the up-down direction is arranged at the left end of the first elastic plate 18. A second arc-shaped plate 21 coaxial with the first arc-shaped plate 20 is arranged at the left end of the second elastic plate 19. The left end of the first arc-shaped plate is arranged at an interval from the second arc-shaped plate. A column-shaped accommodating cavity 22 is formed between the first arc-shaped plate 20 and the second arc-shaped plate 21. The axis of the column-shaped accommodating cavity extends in the up-down direction. The connection positions between the first elastic plate and the first arc-shaped plate and between the second elastic plate and the second arc-shaped plate form a through port 23 with a diameter smaller than that of the column-shaped accommodating cavity. There is a gap between the left ends of the first arc-shaped plate and the second arc-shaped plate, and the width of this gap is less than one-fourth of the width of the through port.

[0028] The left sealing member further includes a front vertical plate 16 and a rear vertical plate 17 arranged at intervals front and back. The left ends of the front vertical plate 16 and the rear vertical plate 17 are fixed to the left metal connector. The right end of the first elastic plate 18 is connected to the right end of the front vertical plate 16, and the right end of the second elastic plate 19 is connected to the right end of the rear vertical plate 17. The right ends of the front vertical plate and the rear vertical plate of the front sealing member can elastically deform in the front-back direction, and the right ends of the front vertical plate and the rear vertical plate of the rear sealing member can elastically deform in the front-back direction. A pull belt 11 is arranged between the right end of the rear vertical plate of the front sealing member and the right end of the front vertical plate of the rear sealing member. In this embodiment, the front vertical plate, the first elastic plate, and the first arc-shaped plate are integrally bent and formed, and the rear vertical plate, the second elastic plate, and the second arc-shaped plate are integrally bent and formed.

[0029] At the left end of the right metal connecting member, there is a right sealing member 10 correspondingly arranged with the left sealing member. The right sealing member includes a convex rib 14 extending in the up and down direction and adapted to the flared structure. The cross-sectional shape of the convex rib 14 is triangular. At the left end of the convex rib, there is a sealing column 9 with an axis extending in the up and down direction for entering the columnar accommodating cavity through the through port. The diameter of the sealing column 9 is larger than the inner diameter of the columnar accommodating cavity in the natural state of the first elastic plate and the second elastic plate. The natural state refers to the state when the first elastic plate and the second elastic plate are not subjected to external forces. The sealing column includes a cylindrical body 26 made of a metal structure, and a rubber layer 25 for sealingly cooperating with the inner wall of the columnar accommodating cavity is vulcanized and fixed on the outer periphery of the cylindrical body.

[0030] The joint waterproof structure further includes a pull - band scissor for cutting the pull - band when the first wall and the second wall move relative to each other. The pull - band scissor includes a left knife body 12 arranged on the left metal connecting member and a right knife body 13 arranged on the right metal connecting member. Item 15 in the figure represents the blade of the right knife body. The left end of the blade of the right knife body is located on the left side of the sealing column. The left knife body is located on the left side of the first arc - shaped plate and the second arc - shaped plate. During the process of the second wall moving leftward relative to the first wall, the right knife body pushes the pull - band leftward. The pull - band drives the rear vertical plate of the front sealing member and the right end of the front vertical plate of the rear sealing member to swing relatively, thereby widening the width of the through port. When the sealing column enters the columnar accommodating cavity through the through port, the right knife body contacts the left knife body to cut the pull - band 11. Subsequently, the rear vertical plate of the front sealing member resets, and the front vertical plate of the rear sealing member resets. For each left sealing member, the first arc - shaped plate squeezes the rubber layer under the action of the first elastic plate, and the second arc - shaped plate squeezes the rubber layer under the action of the second elastic plate, thereby ensuring the sealing and waterproof effect of the rubber layer.

[0031] During the on - site assembly of the two walls when the second wall moves leftward relative to the first wall, even if the moving distance of the second wall is not well controlled, for example, the distance between the second wall and the first wall is too small, at this time, the first arc - shaped plate and the second arc - shaped plate will also open relatively, avoiding the problem of rubber layer failure caused by excessive extrusion, and the requirement for on - site installation accuracy can be reduced; in a slightly vibrating environment, for example, when the first wall and the second wall move in the front - to - back direction, the first elastic plate and the second elastic plate can also deform to avoid rubber layer failure due to excessive extrusion. When the moving distance in the front - to - back direction between the first wall and the second wall is large, the front sealing member and the rear sealing member can deform as a whole to achieve energy absorption.

[0032] In the above description of this specification, unless otherwise clearly specified and defined, terms such as "fixed", "installed", "connected" or "coupled" should be understood in a broad sense. For example, for the term "connected", it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the communication inside two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0033] According to the above description of this specification, those skilled in the art can also understand the terms used as follows. For example, terms indicating orientation or position relationship such as "upper", "lower", "front", "rear", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "center", "longitudinal", "transverse", "clockwise" or "counterclockwise" are based on the orientation or position relationship shown in the drawings of this specification. It is only for the purpose of facilitating the description of the solution of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operated in the specific orientation. Therefore, the above terms of orientation or position relationship cannot be understood or interpreted as a limitation to the solution of the present invention.

[0034] In addition, the terms "first" or "second" etc. used in this specification to refer to numbers or ordinals are only for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" or "second" can explicitly or implicitly include at least one such feature. In the description of this specification, "a plurality of" means at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or equivalently replace some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A joint waterproof structure for prefabricated buildings, comprising a first wall and a second wall arranged left and right, characterized in that: A left metal connector is provided at the right end of the first wall body, and a right metal connector is provided at the left end of the second wall body. The right end of the left metal connector has one or at least two left sealing members arranged at intervals in the front-rear direction. The left sealing members include a first elastic plate and a second elastic plate arranged at intervals in the front-rear direction. The left ends of the first elastic plate and the second elastic plate are elastic overhanging ends that can elastically deform in the front-rear direction. A flared structure with an increasing distance from left to right is formed between the first elastic plate and the second elastic plate. A first arc-shaped plate with an axis extending in the up-down direction is provided at the left end of the first elastic plate, and a second arc-shaped plate coaxial with the first arc-shaped plate and spaced from the left end of the first arc-shaped plate is provided at the left end of the second elastic plate. A columnar accommodating cavity is formed between the first arc-shaped plate and the second arc-shaped plate. The connection positions of the first elastic plate and the first arc-shaped plate and the connection positions of the second elastic plate and the second arc-shaped plate form a through port with a diameter smaller than the diameter of the columnar accommodating cavity. A right sealing member corresponding to the left sealing member is provided at the left end of the right metal connector. The right sealing member includes a convex rib extending in the up-down direction adapted to the flared structure. A sealing column with an axis extending in the up-down direction for entering the columnar accommodating cavity through the through port is provided at the left end of the convex rib. The diameter of the sealing column is larger than the inner diameter of the columnar accommodating cavity in the natural state of the first elastic plate and the second elastic plate. A rubber layer for sealingly cooperating with the inner wall of the columnar accommodating cavity is vulcanized and fixed on the outer periphery of the sealing column.

2. The seam waterproof structure according to claim 1, characterized in that: The left sealing member further includes a front vertical plate and a rear vertical plate arranged at intervals in the front-rear direction. The left ends of the front vertical plate and the rear vertical plate are fixed on the left metal connector. The right end of the first elastic plate is connected to the right end of the front vertical plate, and the right end of the second elastic plate is connected to the right end of the rear vertical plate.

3. The joint waterproof structure according to claim 2, wherein: There are two left sealing members, and the two left sealing members are a front sealing member and a rear sealing member arranged at intervals in the front-rear direction.

4. The seam waterproof structure according to claim 3, characterized in that: The right end of the rear vertical plate of the front sealing member can elastically deform in the front-rear direction, and the right end of the front vertical plate of the rear sealing member can elastically deform in the front-rear direction. A pulling belt is provided between the right end of the rear vertical plate of the front sealing member and the right end of the front vertical plate of the rear sealing member. The joint waterproof structure further includes a pulling belt scissors for cutting the pulling belt when the first wall body and the second wall body move relative to each other. The pulling belt scissors include a left knife body provided on the left metal connector and a right knife body provided on the right metal connector.

5. The seam waterproof structure according to claim 4, wherein: During the process of the second wall body moving leftward relative to the first wall body, the right knife body pushes the pulling belt leftward, and the pulling belt drives the rear vertical plate of the front sealing member and the right end of the front vertical plate of the rear sealing member to swing relative to each other, thereby expanding the width of the through port.

6. The seam waterproof structure according to any one of claims 1 to 5, characterized in that: The left metal connector further includes a U-shaped left metal buckle plate with an opening facing left and fixed to the right end of the first wall body. The first wall body includes a first steel bar framework and first precast concrete poured and fixed on the periphery of the first steel bar framework and on the left side of the left metal buckle plate. A connecting rib extending in the left-right direction and welded to the first steel bar framework is fixed on the left side of the left metal buckle plate. The left sealing member is arranged on the right side surface of the left metal buckle plate.

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