Connecting piece special for grouting of concrete structural slab

Abstract

The utility model discloses a special connecting piece for grouting of a concrete structural slab, and relates to repairing of a base layer of the concrete structural slab, the special connecting piece for grouting of the concrete structural slab comprises an upper connecting piece, the upper connecting piece comprises an upper connecting pipeline, a grouting pipeline is detachably mounted in the upper connecting pipeline, a ball valve is detachably mounted on one side of the grouting pipeline, and the ball valve is detachably mounted on the other side of the grouting pipeline. The lower connecting piece is detachably installed in the hole of the concrete structural slab and detachably installed below the upper connecting piece, the lower connecting piece comprises a lower connecting pipeline, a supporting frame is fixedly arranged in the lower connecting pipeline in the horizontal direction, and a connecting rod movably penetrates through the position, close to the center, of the top face of the supporting frame; and a spoiler for opening or closing the lower port of the lower connecting pipeline is arranged at one end of the connecting rod. The special connecting piece for grouting of the concrete structural slab can prevent grout from flowing back, and is convenient to disassemble and assemble and high in working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete structural slab base repair, and specifically to a special connector for grouting of concrete structural slabs. Background Technique

[0002] As a key part of a building that bears horizontal loads and transfers vertical loads to the supporting structure, the slab structure design of a concrete structural slab is crucial. Common slab forms include one-way slabs, two-way slabs, and flat slabs without beams, etc. When designing, it is necessary to comprehensively consider the span, load requirements, and economy to determine reasonable slab thickness, span-depth ratio, and boundary conditions. In addition, the overall stability and crack resistance of the slab also need to be considered to ensure the structural safety and reliability.

[0003] At present, after the concrete structural slab is laid, the base layer under the concrete structural slab collapses, thus forming a phenomenon of hollowing. Therefore, it is necessary to grout the hollow area to improve the firmness of the base layer. However, in the existing grouting process, when the grouting is completed and the grouting pipe is withdrawn, the grout is prone to flow back along the holes on the concrete structural slab, which will reduce the grouting effect.

[0004] Therefore, in view of the above problems, it is necessary for the applicant to design a special connector for grouting of concrete structural slabs to solve the problems. Summary of the Invention

[0005] The purpose of the utility model is to provide a special connector for grouting of concrete structural slabs to solve the problems mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A special connector for grouting of concrete structural slabs, including an upper connector, and the upper connector includes an upper connecting pipe. A grouting pipe is detachably installed inside the upper connecting pipe, and a ball valve is detachably installed on one side of the grouting pipe.

[0007] It further includes: a lower connector detachably installed inside the hole of the concrete structural slab, and the lower connector is detachably installed below the upper connector. The lower connector includes a lower connecting pipe, and a support frame is fixedly arranged horizontally inside the lower connecting pipe. A connecting rod movably penetrates through the top surface of the support frame near the center, and a flow blocking plate for opening or closing the lower port of the lower connecting pipe is arranged at one end of the connecting rod.

[0008] Further, a fixing plate is fixedly arranged at one end of the connecting rod away from the flow blocking plate. A return spring located outside the connecting rod is arranged on the bottom surface of the fixing plate, and one end of the return spring away from the flow blocking plate is fixedly connected to the top surface of the support frame.

[0009] Through the above structural design, when grouting, the slurry will push the fixed plate downward. The downward movement of the fixed plate will use the connecting rod to push the flow-blocking plate downward, facilitating the entry of the slurry into the hollow area. After the grouting is completed, the reset spring will push the fixed plate upward. The upward movement of the fixed plate will use the connecting rod to pull the flow-blocking plate to close the lower connecting pipe, preventing the slurry from flowing back and improving the grouting effect.

[0010] Furthermore, a rubber sheet for improving the sealing performance is sleeved on the outer side of the connecting rod, and the rubber sheet is located between the lower connecting pipe and the flow-blocking plate.

[0011] Through the above structural design, the rubber sheet is used to facilitate improving the sealing performance between the flow-blocking plate and the lower connecting pipe, enhancing the effect of blocking the backflow of the slurry.

[0012] Furthermore, several connecting plates are integrally connected to the lower side of the lower connecting pipe, and hook blocks capable of being stuck under the concrete structural slab are integrally connected to the outer sides of the bottoms of the several connecting plates.

[0013] Through the above structural design, during use, the hook blocks are pressed by an external force, and the lower connecting part is inserted along the hole of the concrete structural slab. When the hook blocks are completely inserted into the hollow area, the connecting plates will drive the hook blocks to expand. During grouting, the pressure in the hollow area will squeeze the hook blocks, making the hook blocks contact the lower surface of the concrete structural slab, facilitating the installation of the lower connecting part and ensuring a firm connection.

[0014] Furthermore, a mounting nut is arranged on the outer side of the lower connecting pipe, and the outer diameter of the mounting nut is larger than the diameter of the hole opened on the concrete structural slab.

[0015] Through the above structural design, the mounting nut is used to prevent the lower connecting part from slipping and can improve the firmness between the lower connecting part and the concrete structural slab.

[0016] Furthermore, a limiting ring for restricting the passage of the grouting pipe is fixedly arranged on the inner wall of the upper connecting pipe, and the inner diameter of the limiting ring is smaller than the outer diameter of the output end of the grouting pipe.

[0017] Through the above structural design, the limiting ring can limit the maximum length of the grouting pipe inserted into the upper connecting part, improving safety.

[0018] Furthermore, a clamping groove is opened at the bottom of the upper connecting pipe, a clamping block is fixedly arranged on the inner wall of the lower connecting pipe, and the clamping block is adapted to the clamping groove.

[0019] Through the above structural design, during use, insert the upper connecting pipe along the inner wall of the lower connecting pipe. After the upper connecting pipe is completely inserted, rotate the upper connecting pipe or the lower connecting pipe so that the engaging groove engages with the engaging block, which facilitates connecting the upper connecting pipe and the lower connecting pipe and improves the stability of grouting. After grouting is completed, detach the upper connecting pipe from the lower connecting pipe in the same way. The disassembly and installation are convenient and the work efficiency is high.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows: The special connector for grouting of the concrete structural slab can prevent the backflow of the slurry, and the disassembly and installation are convenient and the work efficiency is high. The specific content is as follows:

[0021] 1. There are an upper connector and a lower connector. During use, after opening the ball valve to allow the slurry to pass through, the slurry will push the fixed plate downward. The downward movement of the fixed plate will push the connecting rod downward and simultaneously push the return spring. The return spring generates elastic force. When the connecting rod moves downward, it will push the flow-blocking plate downward, facilitating the slurry to enter the hollow area. After grouting is completed, the elastic force of the return spring will push the fixed plate upward. The upward movement of the fixed plate will pull the connecting rod upward, and the upward movement of the connecting rod will pull the flow-blocking plate to close the lower connecting pipe, preventing the backflow of the slurry and improving the grouting effect.

[0022] 2. There are an upper connector and a lower connector. During installation, insert the upper connecting pipe along the inner wall of the lower connecting pipe. After the upper connecting pipe is completely inserted, rotate the upper connecting pipe or the lower connecting pipe so that the engaging groove engages with the engaging block, connecting the upper connecting pipe and the lower connecting pipe, improving the stability of grouting. After grouting is completed, the upper connecting pipe can be detached from the lower connecting pipe in the same way. The disassembly and installation are convenient and the work efficiency is high.

[0023] 3. There are an upper connector and a lower connector. During grouting, press the hook block with an external force and insert the lower connector along the hole of the concrete structural slab. When the hook block is completely inserted into the hollow area, the connecting plate will drive the hook block to expand. During grouting, the pressure in the hollow area will squeeze the hook block, making the hook block contact the lower surface of the concrete structural slab, facilitating the installation of the lower connector and ensuring a firm connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall split structure of the present utility model;

[0025] Figure 2 is a three-dimensional structural diagram of the upper connector of the present utility model;

[0026] Figure 3 is a three-dimensional sectional structural diagram of the upper connector of the present utility model;

[0027] Figure 4 is a three-dimensional structural diagram of the lower connector of the present utility model;

[0028] Figure 5 This is a schematic diagram of the three-dimensional sectional structure of the lower connector of the present utility model;

[0029] Figure 6 For the present utility model Figure 5 The enlarged schematic diagram of the structure at position A in it.

[0030] In the figure: 1, grouting pipeline; 2, upper connector; 3, lower connector; 10, ball valve; 20, upper connecting pipeline; 21, engaging groove; 22, limiting ring; 30, lower connecting pipeline; 31, support frame; 32, connecting rod; 33, flow blocking plate; 34, fixing plate; 35, return spring; 36, rubber sheet; 37, connecting plate; 38, hook block; 39, mounting nut; 300, engaging block. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] As Figures 1-6 shown, the special connector for grouting of the concrete structural slab of the present utility model includes an upper connector 2, and the upper connector 2 includes an upper connecting pipeline 20. A grouting pipeline 1 is detachably installed inside the upper connecting pipeline 20, and a ball valve 10 is detachably installed on one side of the grouting pipeline 1. A limiting ring 22 for restricting the passage of the grouting pipeline 1 is fixedly provided on the inner wall of the upper connecting pipeline 20, and the inner diameter of the inner ring of the limiting ring 22 is smaller than the outer diameter of the output end of the grouting pipeline 1. An engaging groove 21 is opened at the bottom of the upper connecting pipeline 20, and an engaging block 300 is fixedly provided on the inner wall of the lower connecting pipeline 30, and the engaging block 300 is adapted to the engaging groove 21.

[0033] Through the above structural design, during installation, the upper connecting pipeline 20 is inserted along the inner wall of the lower connecting pipeline 30. When the upper connecting pipeline 20 is completely inserted, rotate the upper connecting pipeline 20 or the lower connecting pipeline 30 so that the engaging groove 21 and the engaging block 300 are engaged, connecting the upper connecting pipeline 20 and the lower connecting pipeline 30, improving the stability of grouting. When the grouting is completed, use the same method to separate the upper connecting pipeline 20 from the lower connecting pipeline 30. The disassembly and installation are convenient and the work efficiency is high.

[0034] It further includes a lower connecting member 3 detachably installed inside the hole of the concrete structural slab, and the lower connecting member 3 is detachably installed below the upper connecting member 2. The lower connecting member 3 includes a lower connecting pipe 30, and a support frame 31 is fixedly arranged horizontally inside the lower connecting pipe 30. A connecting rod 32 penetrates through the top surface of the support frame 31 near the center movably, and a flow blocking plate 33 for opening or closing the lower port of the lower connecting pipe 30 is arranged at one end of the connecting rod 32. A fixing plate 34 is fixedly arranged at the end of the connecting rod 32 far from the flow blocking plate 33. A return spring 35 located outside the connecting rod 32 is arranged on the bottom surface of the fixing plate 34, and the end of the return spring 35 far from the flow blocking plate 33 is fixedly connected to the top surface of the support frame 31. A rubber sheet 36 for improving the sealing performance is sleeved on the outer side of the connecting rod 32, and the rubber sheet 36 is located between the lower connecting pipe 30 and the flow blocking plate 33. A plurality of connecting plates 37 are integrally connected to the lower side of the lower connecting pipe 30, and hook blocks 38 capable of being stuck under the concrete structural slab are integrally connected to the outer sides of the bottoms of the plurality of connecting plates 37. An installation nut 39 is arranged on the outer side of the lower connecting pipe 30, and the outer diameter of the installation nut 39 is larger than the diameter of the hole opened on the concrete structural slab.

[0035] Through the above structural design, during grouting, the hook block 38 is pressed by an external force, and the lower connecting member 3 is inserted along the hole of the concrete structural slab. When the hook block 38 is completely inserted into the hollow area, the connecting plate 37 will drive the hook block 38 to expand. During grouting, the pressure in the hollow area will squeeze the hook block 38, making the hook block 38 contact with the lower surface of the concrete structural slab, which is convenient for installing the lower connecting member 3. When the installation is completed and grouting is carried out, after opening the ball valve 10 to allow the slurry to pass through, the slurry will push the fixing plate 34 to descend. The descent of the fixing plate 34 will push the connecting rod 32 to descend, and at the same time push the return spring 35. The return spring 35 generates an elastic force. When the connecting rod 32 descends, it will push the flow blocking plate 33 to descend, facilitating the entry of the slurry into the hollow area. After the grouting is completed, the elastic force of the return spring 35 will push the fixing plate 34 to rise. The rise of the fixing plate 34 will pull the connecting rod 32 to rise, and the rise of the connecting rod 32 will pull the flow blocking plate 33 to close the lower connecting pipe 30, preventing the slurry from flowing back and improving the grouting effect.

[0036] Working principle: When using the special connector for grouting of the concrete structural slab, insert the upper connecting pipe 20 along the inner wall of the lower connecting pipe 30. After the upper connecting pipe 20 is completely inserted, rotate the upper connecting pipe 20 or the lower connecting pipe 30 so that the engaging groove 21 engages with the engaging block 300, connecting the upper connecting pipe 20 and the lower connecting pipe 30 to improve the stability of grouting. After the upper connector 2 and the lower connector 3 are installed, press the hook block 38 with an external force and insert the lower connector 3 along the hole of the concrete structural slab. When the hook block 38 is completely inserted into the hollow area, the connecting plate 37 will drive the hook block 38 to expand. During grouting, the pressure in the hollow area will squeeze the hook block 38, making the hook block 38 contact the lower surface of the concrete structural slab, which is convenient for installing the lower connector 3. When the installation is completed and grouting is carried out, open the ball valve 10 so that the slurry passes through. The slurry will push the fixing plate 34 to descend. The descent of the fixing plate 34 will push the connecting rod 32 to descend, and at the same time push the return spring 35. The return spring 35 generates elastic force. When the connecting rod 32 descends, it will push the flow blocking plate 33 to descend, facilitating the slurry to enter the hollow area. After grouting is completed, the elastic force of the return spring 35 will push the fixing plate 34 to ascend. The ascent of the fixing plate 34 will pull the connecting rod 32 to ascend. The ascent of the connecting rod 32 will pull the flow blocking plate 33 to close the lower connecting pipe 30, preventing the slurry from flowing back and improving the grouting effect. At the same time, disassemble the grouting pipe 1 and the upper connector 2, facilitating the reuse of the grouting pipe 1 and the upper connector 2.

[0037] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. Special connector for grouting of concrete structural slab, characterized in that: The invention comprises an upper connecting piece (2), wherein the upper connecting piece (2) comprises an upper connecting pipe (20), wherein a grouting pipe (1) is disassembled and installed inside the upper connecting pipe (20), and a ball valve (10) is disassembled and installed on one side of the grouting pipe (1), Also includes: A lower connecting member (3) installed inside a hole of a concrete structure plate is disassembled and installed below an upper connecting member (2), wherein the lower connecting member (3) comprises a lower connecting pipe (30), and a support frame (31) is fixedly arranged inside the lower connecting pipe (30) in a horizontal direction, a connecting rod (32) is movably penetrated through the top surface of the support frame (31) near the center, and a baffle (33) for opening or closing the lower port of the lower connecting pipe (30) is arranged at one end of the connecting rod (32).

2. The special connector for grouting of concrete structural slab according to claim 1, characterized in that: A fixing plate (34) is fixedly provided at one end of the connecting rod (32) away from the spoiler (33); a return spring (35) located outside the connecting rod (32) is provided on the bottom surface of the fixing plate (34); and one end of the return spring (35) away from the spoiler (33) is fixedly connected to the top surface of the support frame (31).

3. The special connector for grouting of concrete structural slab according to claim 2, characterized in that: The outer side of the connecting rod (32) is sleeved with a rubber sheet (36) for improving sealing performance, and the rubber sheet (36) is located between the lower connecting pipe (30) and the spoiler (33).

4. The special connector for grouting of concrete structural slab according to claim 1, characterized in that: A plurality of connection plates (37) are integrally connected to the lower side of the lower connection pipe (30), and hook blocks (38) capable of being clamped under a concrete structure plate are integrally connected to the outer sides of the bottom ends of the plurality of connection plates (37).

5. The special connector for grouting of concrete structural slab according to claim 1, characterized in that: A mounting nut (39) is provided on the outer side of the lower connecting pipe (30), and the outer ring diameter of the mounting nut (39) is larger than the diameter of the hole opened on the concrete structure plate.

6. The special connector for grouting of concrete structural slab according to claim 1, characterized in that: A limiting ring (22) is fixedly provided on the inner wall of the upper connecting pipe (20) for limiting the passage of the grouting pipe (1), and the inner diameter of the limiting ring (22) is smaller than the outer diameter of the output end of the grouting pipe (1).

7. The special connector for grouting of concrete structural slab according to claim 1, characterized in that: The bottom of the upper connecting pipe (20) is provided with a snap-fitting groove (21), and the inner wall of the lower connecting pipe (30) is fixedly provided with a snap-fitting block (300), and the snap-fitting block (300) is adapted to the snap-fitting groove (21).

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