A waterproof connection structure of prefabricated beams

Abstract

The present invention belongs to the technical field of prefabricated building assembly construction, and specifically relates to a prefabricated beam waterproof connection structure, which is used to connect the main beam and the auxiliary beam, and includes: a slot, which is pre-buried in the side wall of the main beam; a slide, which is pre-buried at the end of the auxiliary beam; a plug plate, which is slidably arranged in the slide along the length direction of the auxiliary beam; a pre-support member, which is pre-buried at the upper edge of the end of the auxiliary beam and protrudes from the end face of the auxiliary beam, the pre-support member is used to overlap the top edge of the main beam, and a water stop strip is provided on the bottom surface of the pre-support member; a driving mechanism is installed on the auxiliary beam, and the driving mechanism is used to drive the plug plate to slide so that one end of the plug plate is inserted into the slot. The prefabricated beam waterproof connection structure provided by the present invention can realize the support-free connection between the auxiliary beam and the main beam, the pre-support member on the auxiliary beam overlaps the main beam, and a water stop strip is provided between the auxiliary beam and the main beam, which eliminates the assembly gap between the main beam and the auxiliary beam and improves the waterproof performance.

Description

Technical Field

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

[0002] In the prior art, the connection process of precast beams is generally as follows: first, a temporary support structure for precast beams is built according to surveying data, then the precast beams are hoisted onto the temporary support structure, a cast-in-place formwork is built at the connection position of the precast beams, and steel bars are laid, and then the connection position is cast, and the formwork and temporary support structure are removed after the connection position reaches a predetermined strength. The defects of this connection method are that, first, there is an interface between the cast-in-place section and the precast structure, and this interface will cause the risk of water seepage in the later stage of construction; second, the construction and removal process of the temporary support structure and the cast-in-place formwork is cumbersome, which seriously affects the construction efficiency. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a prefabricated beam waterproof connection structure which is easy to assemble and can improve the waterproof performance.

[0004] To achieve the above-mentioned and other related purposes, the present invention provides a prefabricated beam waterproof connection structure for connecting a main beam and a secondary beam, comprising:

[0005] A slot, embedded in the side wall of the main beam;

[0006] A chute, embedded in the end of the sub-beam;

[0007] A plug plate is slidably disposed in the slide groove along the length direction of the secondary beam;

[0008] A pre-supporting member, embedded in the upper edge of the end of the secondary beam and protruding from the end surface of the secondary beam, the pre-supporting member is used to overlap the top edge of the main beam, and a water stop strip is provided on the bottom surface of the pre-supporting member;

[0009] A driving mechanism is installed on the sub-beam, and the driving mechanism is used to drive the plug board to slide so that one end of the plug board is inserted into the slot.

[0010] In an optional embodiment of the present invention, the bottom wall of the pre-support member is provided with a height adjustment mechanism, and the height adjustment mechanism is assembled to enable the sub-beam to be adjusted between a first height and a second height relative to the main beam, when the sub-beam is at the first height, the bottom surface of the plug plate is higher than the bottom surface of the slot, when the sub-beam is at the second height, the bottom surface of the plug plate contacts the bottom surface of the slot, a clamping block is provided on the bottom surface of the slot, and a clamping groove cooperating with the clamping block is provided at the bottom of the plug plate.

[0011] In an optional embodiment of the present invention, the driving mechanism includes a driving block movably connected to the slide slot in a vertical direction, the lower end of the driving block is provided with a first inclined surface, the inner end of the plug plate is provided with a second inclined surface, the first inclined surface is in conflict with the second inclined surface, and when the driving block moves from top to bottom, it can drive the plug plate to be ejected outward to be inserted into the slot; a vertical through hole is provided on the driving block, a vertical screw is pre-embedded in the sub-beam, the lower end of the vertical screw is fixedly connected to the slide slot, the through hole is sleeved on the vertical screw, and the upper end of the driving block is provided with a pre-tightening nut matching the screw.

[0012] In an optional embodiment of the present invention, a linkage mechanism is provided between the driving block and the height adjustment mechanism, and the linkage structure is configured so that when the plug plate is retracted in the slide groove, the height adjustment mechanism can keep the sub-beam at the first height, and when the driving block drives the plug plate to be inserted into the slot, the linkage mechanism can drive the height adjustment mechanism to switch the sub-beam to the second height.

[0013] In an optional embodiment of the present invention, the height adjustment mechanism includes a slide plate movably arranged along the length direction of the sub-beam, a trapezoidal protrusion is provided at the bottom of the outer end of the slide plate, and a trapezoidal groove is provided at the top edge of the main beam. The slide plate is movably arranged between a first horizontal position and a second horizontal position. When the slide plate is located at the first horizontal position, the trapezoidal protrusion and the trapezoidal groove are staggered with each other, and the sub-beam is located at the first height. When the slide plate is located at the second horizontal position, the trapezoidal protrusion and the trapezoidal groove are fitted together, and the sub-beam is located at the second height.

[0014] In an optional embodiment of the present invention, the linkage mechanism includes a third inclined surface set on the driving block and a fourth inclined surface set on the slide. When the driving block drives the plug-in board to be inserted into the slot, the third inclined surface and the fourth inclined surface conflict with each other. At this time, the driving block continues to move downward to drive the slide from the first horizontal position to the second horizontal position.

[0015] In an optional embodiment of the present invention, a mortise and tenon piece is provided between the plug plate and the slide groove, the mortise and tenon piece is movably arranged in the vertical direction, a compression spring is provided above the mortise and tenon piece, and a positioning groove cooperating with the mortise and tenon piece is provided at the upper end of the plug plate. When the plug plate is inserted into the slot, the mortise and tenon piece is aligned with the positioning groove, and at this time, the mortise and tenon piece is inserted into the positioning groove under the action of the compression spring.

[0016] In an optional embodiment of the present invention, a notch is provided on the side wall of the mortise and tenon component, and a locking groove cooperating with the mortise and tenon component is provided on the slide plate, and the locking groove includes a first section and a second section, the width of the first section is greater than the width of the mortise and tenon component, the width of the second section is less than the width of the mortise and tenon component and greater than the width of the notch on the mortise and tenon component, before the mortise and tenon component is inserted into the positioning groove, the notch is offset from the locking groove, and at this time the mortise and tenon component is located in the first section, which can prevent the slide plate from sliding, and after the mortise and tenon component is inserted into the positioning groove, the notch is flush with the locking groove, so that the mortise and tenon component can slide into the second section.

[0017] In an optional embodiment of the present invention, a first cushion block and a second cushion block are respectively provided at the upper outer end and the lower inner end of the slide groove, and the width of the first cushion block and the second cushion block is greater than the width of the slide groove.

[0018] In an optional embodiment of the present invention, a first reinforcing rib and a second reinforcing rib are respectively embedded in the sub-beam, wherein the first reinforcing rib includes a first U-shaped portion, which bypasses the upper end of the first cushion block, and both ends of the first U-shaped portion extend downward and then extend inward in a direction parallel to the sub-beam; the second reinforcing rib includes a second U-shaped portion, which bypasses the bottom of the second cushion block, and both ends of the second U-shaped portion extend upward and then extend outward in a direction parallel to the sub-beam.

[0019] The technical effect of the present invention is that the prefabricated beam waterproof connection structure provided by the present invention can realize the support-free connection between the auxiliary beam and the main beam, the pre-supporting parts on the auxiliary beam are overlapped on the main beam, and a water retaining strip is arranged between the auxiliary beam and the main beam, thereby eliminating the assembly gap between the main beam and the auxiliary beam and improving the waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional diagram of a prefabricated beam waterproof connection structure provided by an embodiment of the present invention;

[0021] Figure 2 is a three-dimensional diagram of the end structure of the secondary beam provided by an embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the side surface of the main beam provided by an embodiment of the present invention;

[0023] Figure 4 is a top view of a prefabricated beam waterproof connection structure provided by an embodiment of the present invention;

[0024] Figure 5 yes Figure 4 AA section view;

[0025] Figure 6 is a schematic diagram of the internal structure of the sub-beam provided by an embodiment of the present invention;

[0026] Figure 7 is an exploded view of the internal embedded structure of the sub-beam provided in an embodiment of the present invention;

[0027] Figure 8 It is an exploded view of the slide plate and the mortise and tenon parts provided in the embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0029] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic manner, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0030] See also Figure 1-8 As shown, the prefabricated beam waterproof connection structure provided by the present invention can realize the support-free connection between the auxiliary beam 20 and the main beam 10. The pre-supporting member 23 on the auxiliary beam 20 is overlapped on the main beam 10, and a water retaining strip 25 is arranged between the auxiliary beam 20 and the main beam 10, thereby eliminating the assembly gap between the main beam 10 and the auxiliary beam 20 and improving the waterproof performance. In the description of the present invention, the "inside" and "outside" are based on the objective physical structure of the auxiliary beam 20. Figure 5 For example, in the figure, the left side of the sub-beam 20 is the outer side, and the right side of the sub-beam 20 is the inner side.

[0031] See also Figure 1-8As shown, a prefabricated beam waterproof connection structure is used to connect the main beam 10 and the sub-beam 20, including a slot 11, a slide 21, a plug plate 22, a pre-support member 23 and a driving mechanism; the slot 11 is embedded in the side wall of the main beam 10; the slide 21 is embedded in the end of the sub-beam 20; the plug plate 22 is slidably arranged in the slide 21 along the length direction of the sub-beam 20; the pre-support member 23 is embedded in the upper edge of the end of the sub-beam 20 and protrudes from the end surface of the sub-beam 20, the pre-support member 23 is used to overlap the top edge of the main beam 10, and a water stop strip is provided on the bottom surface of the pre-support member 23; the driving mechanism is installed on the sub-beam 20, and the driving mechanism is used to drive the plug plate 22 to slide so that one end of the plug plate 22 is inserted into the slot 11.

[0032] The secondary beam 20 of the present invention can be supported on the main beam 10 by the pre-support member 23, eliminating the construction and dismantling processes of the temporary support structure, improving the assembly efficiency of the prefabricated building, and a water retaining strip 25 is arranged between the pre-support member 23 and the main beam 10, thereby improving the waterproof performance between the main beam 10 and the secondary beam 20.

[0033] See also Figure 2 , 5 -8, in a specific embodiment, the bottom wall of the pre-support member 23 is provided with a height adjustment mechanism, and the height adjustment mechanism is assembled to enable the sub-beam 20 to be adjusted between a first height and a second height relative to the main beam 10, when the sub-beam 20 is located at the first height, the bottom surface of the plug plate 22 is higher than the bottom surface of the slot 11, when the sub-beam 20 is located at the second height, the bottom surface of the plug plate 22 is in contact with the bottom surface of the slot 11, a block 13 is provided on the bottom surface of the slot 11, and a slot 221 cooperating with the block 13 is provided at the bottom of the plug plate 22.

[0034] See also Figure 5 , 7 As shown, in a specific embodiment, the driving mechanism includes a driving block 26 movably connected to the slide slot 21 in the vertical direction, a first inclined surface 261 is provided at the lower end of the driving block 26, and a second inclined surface 222 is provided at the inner end of the plug plate 22, the first inclined surface 261 conflicts with the second inclined surface 222, and when the driving block 26 moves from top to bottom, it can drive the plug plate 22 to be ejected outward to be inserted into the slot 11; a vertical through hole is provided on the driving block 26, a vertical screw 27 is pre-embedded in the sub-beam 20, the lower end of the vertical screw 27 is fixedly connected to the slide slot 21, the through hole is sleeved on the vertical screw 27, and a pre-tightening nut 271 cooperating with the screw 27 is provided at the upper end of the driving block 26.

[0035] See also Figure 5 ,7 As shown, in a specific embodiment, a linkage mechanism is provided between the driving block 26 and the height adjustment mechanism, and the linkage structure is configured so that when the plug plate 22 is retracted in the slide groove 21, the height adjustment mechanism can keep the sub-beam 20 at the first height, and when the driving block 26 drives the plug plate 22 to be inserted into the slot 11, the linkage mechanism can drive the height adjustment mechanism to switch the sub-beam 20 to the second height.

[0036] See also Figure 2 , 5 -8, in a specific embodiment, the height adjustment mechanism includes a slide plate 24 movably arranged along the length direction of the sub-beam 20, a trapezoidal protrusion 241 is provided at the bottom of the outer end of the slide plate 24, a trapezoidal groove 12 is provided at the top edge of the main beam 10, and the slide plate 24 is movably arranged between a first horizontal position and a second horizontal position. When the slide plate 24 is located at the first horizontal position, the trapezoidal protrusion 241 and the trapezoidal groove 12 are staggered with each other, and the sub-beam 20 is located at the first height. When the slide plate 24 is located at the second horizontal position, the trapezoidal protrusion 241 is engaged with the trapezoidal groove 12, and the sub-beam 20 is located at the second height.

[0037] See also Figure 5 As shown, in a specific embodiment, the linkage mechanism includes a third inclined surface 262 set on the driving block 26, and a fourth inclined surface 242 set on the slide plate 24. When the driving block 26 drives the plug plate 22 to be inserted into the slot 11, the third inclined surface 262 and the fourth inclined surface 242 conflict with each other. At this time, the driving block 26 continues to move downward to drive the slide plate 24 from the first horizontal position to the second horizontal position.

[0038] See also Figure 5 , 7 As shown in 8, in a specific embodiment, a mortise and tenon 28 is provided between the plug plate 22 and the slide groove 21, and the mortise and tenon 28 is movably arranged in the vertical direction. A compression spring 281 is provided above the mortise and tenon 28, and a positioning groove cooperating with the mortise and tenon 28 is provided at the upper end of the plug plate 22. When the plug plate 22 is inserted into the slot 11, the mortise and tenon 28 is aligned with the positioning groove. At this time, the mortise and tenon 28 is inserted into the positioning groove under the action of the compression spring 281.

[0039] See also Figure 8As shown, in a specific embodiment, a notch 282 is provided on the side wall of the mortise and tenon member 28, and a locking groove 243 cooperating with the mortise and tenon member 28 is provided on the slide plate 24, and the locking groove 243 includes a first section 2431 and a second section 2432, the width of the first section 2431 is greater than the width of the mortise and tenon member 28, the width of the second section 2432 is less than the width of the mortise and tenon member 28 and greater than the width of the notch 282 on the mortise and tenon member 28, before the mortise and tenon member 28 is inserted into the positioning groove, the notch 282 is staggered from the locking groove 243, at which time the mortise and tenon member 28 is located in the first section 2431, which can prevent the slide plate 24 from sliding, and after the mortise and tenon member 28 is inserted into the positioning groove, the notch 282 is flush with the locking groove 243, so that the mortise and tenon member 28 can slide into the second section 2432.

[0040] See also Figure 6 As shown, in a specific embodiment, the upper outer end and the lower inner end of the slide slot 21 are respectively provided with a first cushion block 211 and a second cushion block 212, and the widths of the first cushion block 211 and the second cushion block 212 are greater than the width of the slide slot 21. Furthermore, the sub-beam 20 is also pre-embedded with a first reinforcing rib 201 and a second reinforcing rib 202, respectively. The first reinforcing rib 201 includes a first U-shaped portion, which bypasses the upper end of the first cushion block 211, and the two ends of the first U-shaped portion extend downward and then extend inward in a direction parallel to the sub-beam 20; the second reinforcing rib 202 includes a second U-shaped portion, which bypasses the lower side of the second cushion block, and the two ends of the second U-shaped portion extend upward and then extend outward in a direction parallel to the sub-beam 20.

[0041] The specific working process and principle of the present invention are as follows:

[0042] Before assembly, the plug plate 22 of the secondary beam 20 is retracted in the slide groove 21. At this time, the mortise and tenon 28 is against the upper end of the plug plate 22, and the slide plate 24 is blocked by the mortise and tenon 28 and remains in the right position. At this time, the secondary beam 20 is hoisted onto the main beam 10, and the pre-support member 23 is overlapped in the preset groove on the main beam 10. At this time, the trapezoidal protrusion 241 is staggered with the trapezoidal groove 12, so that the secondary beam 20 is maintained at the first height; then start to rotate the pre-tightening nut 271 on the screw rod 27 to make the driving block 26 go down. The driving block 26 first drives the plug plate 22 to move to the left, so that the plug plate 22 is inserted into the slot 11 of the main beam 10. At this time, Since the bottom surface of the plug plate 22 is higher than the bottom surface of the slot 11, the plug plate 22 will not be blocked by the block 13. After the plug plate 22 is inserted into place, the mortise and tenon piece 28 pops up downward and is inserted into the positioning groove at the upper end of the plug plate 22. At this time, the driving block 26 continues to move downward and begins to drive the slide plate 24 to move left. As the slide plate 24 moves left, the trapezoidal protrusion 241 gradually engages with the trapezoidal groove 12. At this time, the subbeam 20 falls to the second height, the bottom surface of the plug plate 22 is blocked with the bottom surface of the slot 11, and the block 13 is inserted into the slot 221. At this time, the plug plate 22 and the pre-support member 23 jointly provide support for the subbeam 20, and the subbeam 20 is installed in place.

[0043] In the present invention, pads and reinforcing ribs are arranged on the upper and lower sides of the slide groove 21. The positions of the pads and reinforcing ribs are just the stress concentration points of the plug plate 22, thereby ensuring the supporting strength of the plug plate 22. In the present invention, grooves can be arranged on the upper ends of the auxiliary beam 20 and the main beam 10. The grooves serve as cast-in-place grooves 30. After the auxiliary beam 20 is installed in place, the excess part of the upper end of the screw rod 27 is cut off, and then concrete is poured in the grooves to make the connection part flush with the top surfaces of the main beam 10 and the auxiliary beam 20, thereby ensuring the appearance quality of the connection area.

[0044] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

[0045] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of the specific details or with other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0046] References throughout this specification to "one embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout this specification do not necessarily refer to the same embodiment. In addition, the particular features, structures, or characteristics of any specific embodiment of the invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the invention described and illustrated herein may be possible in light of the teachings herein and are to be considered part of the spirit and scope of the invention.

[0047] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0048] In addition, unless otherwise explicitly indicated, any marking arrows in the drawings should be regarded as exemplary only and not limiting. In addition, unless otherwise indicated, the term "or" used herein is generally intended to mean "and / or". In the case where the term is not clear because it is anticipated that the ability to separate or combine is provided, the combination of components or steps will also be regarded as indicated.

[0049] As used in the description herein and throughout the claims that follow, "a", "an", and "the" include plural references unless otherwise indicated. Likewise, as used in the description herein and throughout the claims that follow, the meaning of "in" includes "in" and "on" unless otherwise indicated.

[0050] The above description of the illustrated embodiments of the present invention (including the contents described in the Abstract) is not intended to be an exhaustive list or to limit the present invention to the precise form disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and appreciated by those skilled in the art. As noted, these modifications may be made to the present invention in accordance with the above description of the embodiments described in the present invention, and these modifications will be within the spirit and scope of the present invention.

[0051] Systems and methods have been generally described herein as details that aid in understanding the present invention. In addition, various specific details have been given to provide an overall understanding of embodiments of the present invention. However, those skilled in the relevant art will recognize that embodiments of the present invention may be practiced without one or more of the specific details, or may be practiced using other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid confusion with various aspects of embodiments of the present invention.

[0052] Thus, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the foregoing disclosure, and it should be understood that in some cases, some features of the invention will be employed without the corresponding use of other features without departing from the scope and spirit of the proposed invention. Thus, many modifications may be made to adapt a particular environment or material to the essential scope and spirit of the invention. The invention is not intended to be limited to the specific terms used in the claims below and / or the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Thus, the scope of the invention will be determined solely by the appended claims.

Claims

1. A prefabricated beam waterproof connection structure, characterized in that: Used to connect the main beam and the secondary beam, including: A slot, embedded in the side wall of the main beam; A chute, embedded in the end of the sub-beam; A plug plate is slidably disposed in the slide groove along the length direction of the secondary beam; A pre-supporting member, embedded in the upper edge of the end of the secondary beam and protruding from the end surface of the secondary beam, the pre-supporting member is used to overlap the top edge of the main beam, and a water stop strip is provided on the bottom surface of the pre-supporting member; A driving mechanism is installed on the sub-beam, and the driving mechanism is used to drive the plug-in plate to slide so that one end of the plug-in plate is inserted into the slot; The bottom wall of the pre-supporting member is provided with a height adjustment mechanism, and the height adjustment mechanism is assembled to enable the sub-beam to be adjusted between a first height and a second height relative to the main beam, when the sub-beam is at the first height, the bottom surface of the plug plate is higher than the bottom surface of the slot, and when the sub-beam is at the second height, the bottom surface of the plug plate contacts the bottom surface of the slot, a clamping block is provided on the bottom surface of the slot, and a clamping groove matching the clamping block is provided at the bottom of the plug plate; The driving mechanism includes a driving block movably connected to the slide slot in a vertical direction, a first inclined surface is provided at the lower end of the driving block, and a second inclined surface is provided at the inner end of the plug plate, the first inclined surface conflicts with the second inclined surface, and when the driving block moves from top to bottom, it can drive the plug plate to be ejected outward to be inserted into the slot; a vertical through hole is provided on the driving block, a vertical screw is pre-embedded in the sub-beam, the lower end of the vertical screw is fixedly connected to the slide slot, the through hole is sleeved on the vertical screw, and a pre-tightening nut matching the screw is provided at the upper end of the driving block.

2. The prefabricated beam waterproof connection structure according to claim 1, characterized in that: A linkage mechanism is provided between the driving block and the height adjustment mechanism, and the linkage mechanism is configured so that when the plug plate is retracted in the slide groove, the height adjustment mechanism can keep the sub-beam at the first height, and when the driving block drives the plug plate to be inserted into the slot, the linkage mechanism can drive the height adjustment mechanism to switch the sub-beam to the second height.

3. The prefabricated beam waterproof connection structure according to claim 2, characterized in that: The height adjustment mechanism includes a slide plate movably arranged along the length direction of the sub-beam, a trapezoidal protrusion is provided at the bottom of the outer end of the slide plate, a trapezoidal groove is provided at the top edge of the main beam, and the slide plate is movably arranged between a first horizontal position and a second horizontal position. When the slide plate is located at the first horizontal position, the trapezoidal protrusion and the trapezoidal groove are staggered with each other, and the sub-beam is located at the first height. When the slide plate is located at the second horizontal position, the trapezoidal protrusion is fitted with the trapezoidal groove, and the sub-beam is located at the second height.

4. The prefabricated beam waterproof connection structure according to claim 3, characterized in that: The linkage mechanism includes a third inclined surface set on the driving block and a fourth inclined surface set on the sliding plate. When the driving block drives the plug-in board to be inserted into the slot, the third inclined surface and the fourth inclined surface conflict with each other. At this time, the driving block continues to move downward to drive the sliding plate from the first horizontal position to the second horizontal position.

5. The prefabricated beam waterproof connection structure according to claim 4, characterized in that: A mortise and tenon piece is provided between the plug plate and the slide groove, the mortise and tenon piece is movably arranged in the vertical direction, a compression spring is provided above the mortise and tenon piece, a positioning groove cooperating with the mortise and tenon piece is provided at the upper end of the plug plate, when the plug plate is inserted into the slot, the mortise and tenon piece is aligned with the positioning groove, and at this time, the mortise and tenon piece is inserted into the positioning groove under the action of the compression spring.

6. The prefabricated beam waterproof connection structure according to claim 5, characterized in that: A notch is provided on the side wall of the mortise and tenon component, and a locking groove cooperating with the mortise and tenon component is provided on the slide plate, and the locking groove includes a first section and a second section, the width of the first section is greater than the width of the mortise and tenon component, the width of the second section is less than the width of the mortise and tenon component and greater than the width of the notch on the mortise and tenon component, before the mortise and tenon component is inserted into the positioning groove, the notch is offset from the locking groove, and at this time, the mortise and tenon component is located in the first section, which can prevent the slide plate from sliding, and after the mortise and tenon component is inserted into the positioning groove, the notch is flush with the locking groove, so that the mortise and tenon component can slide into the second section.

7. The prefabricated beam waterproof connection structure according to claim 6, characterized in that: A first cushion block and a second cushion block are respectively disposed at the upper outer end and the lower inner end of the slide groove, and the width of the first cushion block and the second cushion block is greater than the width of the slide groove.

8. The prefabricated beam waterproof connection structure according to claim 7, characterized in that: A first reinforcing rib and a second reinforcing rib are respectively embedded in the sub-beam, wherein the first reinforcing rib includes a first U-shaped portion, which bypasses the upper end of the first cushion block, and both ends of the first U-shaped portion extend downward and then extend inward in a direction parallel to the sub-beam; the second reinforcing rib includes a second U-shaped portion, which bypasses the bottom of the second cushion block, and both ends of the second U-shaped portion extend upward and then extend outward in a direction parallel to the sub-beam.

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