Prefabricated wall connected grouting sleeve

Abstract

A prefabricated wall conjoined grouting sleeve belongs to the technical field of fabricated buildings and comprises a plurality of sleeve bodies and Z-shaped connecting pipes, a grouting pipe joint is arranged on the lower portion of one side of each sleeve body, and a grout outlet pipe joint is arranged on the upper portion of the outer wall of the sleeve body on the opposite side of the grouting pipe joint. The grout outlet pipe joints and the grouting pipe joints of the adjacent sleeve bodies are communicated through Z-shaped connecting pipes, and the multiple sleeve bodies are sequentially connected into a row of integral structures through the Z-shaped connecting pipes. By means of the arrangement, grouting operation of the grouting sleeves can be conducted row by row, the grouting efficiency is improved, meanwhile, the grouting quality is guaranteed, and the follow-up plugging procedure is reduced.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated building technology, specifically relating to a prefabricated wall integrated grouting sleeve. Background Technology

[0002] Currently, in the construction of prefabricated walls, the grouting sleeve construction can only complete the grouting operation of one sleeve at a time, and the grouting port and outlet need to be sealed separately. If the sealing is not timely, it can easily cause the grout to be lost from the grouting sleeve, resulting in insufficient grout in the sleeve and affecting the connection quality of the components (reinforcing bars).

[0003] Patent document CN202211181154.6 discloses a grouting construction device and method for connecting grouting sleeves to precast columns. By connecting grouting sleeve groups and grouting components in series and sealing the interfaces of the series-connected grouting sleeves, the grouting components are used to circulate grout into the grouting sleeves until the grout is densely packed, thereby achieving the connection between the reinforcing bars in the precast column. Compared to traditional grouting sleeve methods, connecting numerous grouting sleeves in series simplifies the number of repeated grouting operations, avoids problems such as missed grouting due to poor management during the grouting process, improves grouting efficiency, and shortens grouting time.

[0004] However, existing technologies, including those in this document, still have the following technical problems:

[0005] (1) The grouting pipe and grout outlet pipe of the grouting sleeve face the same direction, which means that the connecting pipe for their series connection must be located on the outside of the component. See the appendix of this document for details. Figure 2 As shown, this will result in the need to seal several reserved grouting ports and outlets on the surface of the component after the grouting is completed.

[0006] (2) Since the grouting pipe and the grout outlet pipe of the grouting sleeve are oriented in the same direction, the method in this patent document cannot be used directly inside the component. The reason is that the connecting pipe will occupy a large amount of the thickness space of the precast component. If the precast component needs to connect multiple rows of steel bars, the thick space inside the component cannot accommodate multiple rows of grouting sleeves connected in this way.

[0007] (3) The grouting pipe and the outlet pipe of the grouting sleeve are set horizontally, which makes it easy for grout to leak when sealing the grouting pipe and the outlet pipe after grouting is completed. This results in the grouting sleeve not being filled, which in turn leads to insufficient density of the grout in the sleeve and affects the connection quality of the reinforcing bars. Utility Model Content

[0008] This invention discloses a precast wall integrated grouting sleeve. Through systematic improvements to the sleeve's own structure and the connecting parts, this invention provides an integrated grouting sleeve applicable to precast walls. This integrated grouting sleeve can be prefabricated in the factory according to the dimensions of the precast wall, significantly improving the installation efficiency of the grouting sleeve. Furthermore, this invention enables a one-time grouting operation for a row of grouting sleeves inside the wall, ensuring that the grout inside the sleeve does not leak and remains full. It changes the original method of sealing each reserved hole on the front of the precast wall to eliminate the need for reserved grouting ports and outlets on the front, thus avoiding the complex process of sealing several grouting ports and outlets on the front of the precast wall one by one. At the same time, it further improves the structural strength of the precast wall.

[0009] To achieve the above objectives, the technical solution of this invention is as follows:

[0010] A precast wall grouting sleeve includes a sleeve body and a Z-shaped connecting pipe. There are several sleeve bodies. Each sleeve body has a grouting pipe joint on the lower part of one side. The upper part of the outer wall of the sleeve body opposite the grouting pipe joint has a grout outlet pipe joint. The grout outlet pipe joints and grouting pipe joints of adjacent sleeve bodies are connected by Z-shaped connecting pipes. Several sleeve bodies are connected in sequence to form a row of integral structures through Z-shaped connecting pipes.

[0011] Preferably, the included angle between the axes of the grouting pipe joint and the grout outlet pipe joint is 180°.

[0012] Preferably, the top and bottom of the sleeve body in the row of integral structures are flush, the grouting pipe joint of the sleeve body at the beginning end is connected to a first Z-shaped connecting pipe, the top of the first Z-shaped connecting pipe is higher than the top of the sleeve body, and the grout outlet pipe joint of the sleeve body at the end end is connected to a second Z-shaped connecting pipe, the second Z-shaped connecting pipe is curved upward and the top of the second Z-shaped connecting pipe is higher than the top of the sleeve body.

[0013] Preferably, a PVC sleeve is fitted onto the grouting pipe joint and the grout outlet pipe joint respectively. One end of the PVC sleeve is connected to the grouting pipe joint or the grout outlet pipe joint, and the other end is connected to one end of the Z-shaped connecting pipe.

[0014] Preferably, the Z-shaped connecting pipe includes an inclined pipe located in the middle, a first horizontal pipe connected to the high end of the inclined pipe, and a second horizontal pipe connected to the low end of the inclined pipe, wherein the angle between the inclined pipe and the first or second horizontal pipe is 135°.

[0015] Preferably, the Z-shaped connecting pipe is made of metal or PVC material.

[0016] Preferably, the Z-shaped connecting pipe has several elastic plates arranged alternately inside.

[0017] The beneficial effects of this new type of precast wall integral grouting sleeve are as follows:

[0018] This invention provides a new type of integrated grouting sleeve for use in precast walls through systematic improvements to the sleeve's structure and the connecting parts (refined to Z-shaped connecting pipes). This integrated grouting sleeve can be prefabricated in the factory according to the dimensions of the precast wall, significantly improving the installation efficiency of the grouting sleeve. Furthermore, this invention enables a one-time grouting operation for a row of grouting sleeves inside the wall, ensuring that the grout inside the sleeve does not leak and remains full. It changes the original method of sealing each reserved hole on the front of the precast wall to eliminate the need for reserved grouting ports and outlets on the front, thus avoiding the complex process of sealing several grouting ports and outlets on the front of the precast wall one by one. At the same time, it further improves the structural strength of the precast wall. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the sleeve body structure of this novel invention;

[0020] Figure 2 This is a schematic diagram of the structure of the sleeve body connecting the PVC sleeve of this novel invention;

[0021] Figure 3 This is a schematic diagram of the structure in which the sleeve bodies of this novel invention are connected by a Z-shaped connecting pipe;

[0022] Figure 4 This is a front view structural diagram of the present invention during construction;

[0023] Figure 5 This is a top view of the structure during construction of this new type of building;

[0024] Figure 6 This is a schematic diagram of a grouting sleeve structure in the prior art;

[0025] Figure 7 This is a schematic diagram of an embodiment of the present invention with an elastic plate.

[0026] The markings in the diagram are: 01, precast wall grouting sleeve; 1, sleeve body; 2, grout outlet pipe joint; 3, grouting pipe joint; 4, first reinforcing bar; 5, second reinforcing bar; 6, areas where grout cannot be fully filled normally; 7, PVC sleeve two; 8, PVC sleeve one; 9, precast wall; 10, cast-in-place floor slab; 11, non-shrinkage early-strength sealing mortar; 12, Z-shaped connecting pipe; 121, inclined pipe; 122, first horizontal pipe; 123, second horizontal pipe; 13, the angle between the inclined pipe and the horizontal pipe; 14, first Z-shaped connecting pipe; 15, second Z-shaped connecting pipe; 16, elastic plate. Detailed Implementation

[0027] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0028] The following embodiments can be understood as a part of the local structure or method of the present invention, or as a combination of embodiments to explain the connotation of a larger range of structures or methods of the present invention.

[0029] Example 1

[0030] A precast wall grouting sleeve, such as Figure 1-5 As shown in Figure 7, the structure includes a sleeve body 1 and a Z-shaped connecting pipe 12. There are several sleeve bodies 1. Each sleeve body 1 has a grouting pipe joint 3 on one side of its lower part. The upper part of the outer wall of the sleeve body 1 opposite to the grouting pipe joint 3 is provided with a grout outlet pipe joint 2. The grout outlet pipe joint 2 and the grouting pipe joint 3 of adjacent sleeve bodies 1 are connected by the Z-shaped connecting pipe 12. Several sleeve bodies 1 are connected in sequence to form a row of integral structures through the Z-shaped connecting pipe 12.

[0031] In this embodiment, the precast wall integrated grouting sleeve 01 is an integral structure consisting of several sleeve bodies 1 connected in sequence by Z-shaped connecting pipes 12. The precast wall integrated grouting sleeve 01 can be prefabricated in the factory according to the size of the precast wall. When assembling, it can greatly improve the construction efficiency compared to assembling each sleeve body separately.

[0032] Example 2

[0033] like Figure 5 As shown, the included angle between the axis of the grouting pipe joint and the grout outlet pipe joint is 180°. This design can significantly reduce the space occupied by the precast wall integral grouting sleeve 01 in the thickness direction of the precast wall, thereby meeting the situation where the precast wall 9 has multiple rows of steel bars that need to be connected to the reserved steel bars of the cast-in-place floor slab 10.

[0034] Example 3

[0035] like Figure 3 , 4As shown, the top and bottom of the sleeve body 1 in the row of integral structures are flush. The grouting pipe joint 3 of the sleeve body 1 at the starting end is connected to a first Z-shaped connecting pipe 14. The top of the first Z-shaped connecting pipe 14 is higher than the top of the sleeve body 1, thus preventing insufficient grout density in the sleeve body due to grout leakage when the grouting pipe equipment is pulled out. The grout outlet pipe joint 2 of the sleeve body 1 at the end is connected to a second Z-shaped connecting pipe 15. The second Z-shaped connecting pipe 15 is curved upwards and its top is higher than the top of the sleeve body 1. Similarly, this setting will prevent grout leakage due to untimely sealing, thereby reducing the grout density in the sleeve body. Furthermore, it can be understood that at the end of grouting, because the grout surface at both ends of this new type is higher than the top surface of the grout in the sleeve body, the gravity of the grout itself and the effect of the connecting pipe will promote further compaction of the grout in the sleeve body.

[0036] Example 4

[0037] like Figure 2-4 As shown, PVC sleeves (PVC sleeve 1 8 and PVC sleeve 2 7) are respectively fitted onto the grouting pipe joint 3 and the grout outlet pipe joint 2. One end of the PVC sleeve is connected to the grouting pipe joint 3 or the grout outlet pipe joint 2 (interference fit), and the other end is connected to one end of the Z-shaped connecting pipe 12 (interference fit).

[0038] In this embodiment, the PVC sleeve can be replaced with sleeves of other materials, such as rubber or metal, as needed.

[0039] Example 5

[0040] like Figure 2-4 As shown, the Z-shaped connecting pipe 12 includes an inclined pipe 121 located in the middle, a first horizontal pipe 122 connected to the high end of the inclined pipe 121, and a second horizontal pipe 123 connected to the low end of the inclined pipe 121. The angle between the inclined pipe and the first or second horizontal pipe is 135°. The Z-shaped connecting pipe is made of metal or PVC material.

[0041] This embodiment provides a preferred implementation of the Z-shaped connecting pipe 12. The large-angle connection between the inclined pipe and the first or second horizontal pipe can avoid dead angles and help improve the saturation of grouting.

[0042] Example 6

[0043] like Figure 7As shown, the Z-shaped connecting pipe 12 has several elastic plates 16 arranged alternately inside. There are two purposes for this arrangement. First, the flow-blocking effect of the elastic plates themselves requires the slurry to have a certain pressure to overcome the elasticity of the elastic plates, which helps to improve the density of the slurry in the sleeve body 1. Second, the elastic plates themselves vibrate with the flow of the slurry, forming a stirring effect, which helps to expel air bubbles in the slurry.

[0044] The working principle of this new type:

[0045] In use, the corresponding number of precast wall grouting sleeves are selected according to the number of steel bars to be connected. The precast wall grouting sleeves are tied and positioned to the steel cage inside the precast wall. The first steel bar 4 inside the precast wall is inserted into the top of the sleeve body and tightened. The bottom end of the sleeve body is flush with the bottom end of the precast wall. The first Z-shaped connecting pipe 14 and the second Z-shaped connecting pipe 15 need to pass through the corresponding side formwork and be sealed at the penetration point. After the precast wall is cast and formed, when connecting it to the second steel bar 5 reserved in the cast-in-place floor slab 10, a non-shrinkage grouting sleeve is laid between the upper end of the cast-in-place floor slab 10 and the bottom end of the precast wall 9. Early-strength sealing mortar 11 is applied, and at the same time, the second steel bar is inserted into the corresponding sleeve body from the bottom. During grouting, the grouting pipe of the grouting equipment is inserted into the first Z-shaped connecting pipe 14 on one side of the precast wall. When the mortar surface of the second Z-shaped connecting pipe 15 reaches the height of its inner top, the grouting is stopped and the grouting pipe is pulled out. After the mortar in the first Z-shaped connecting pipe 14 and the second Z-shaped connecting pipe 15 has settled sufficiently due to its own weight (so that the part 6 that the grout cannot usually fill is filled with mortar) and formed, the excess pipe body of the first Z-shaped connecting pipe 14 or the second Z-shaped connecting pipe 15 on both sides of the precast wall is cut off.

[0046] With the above-mentioned configuration, this new type of grouting sleeve can be grouted row by row, which improves grouting efficiency, ensures grouting quality, and reduces subsequent sealing procedures.

Claims

1. A precast wall integral grouting sleeve, characterized in that: it includes a sleeve body and a Z-shaped connecting pipe, wherein there are several sleeve bodies, each sleeve body is provided with a grouting pipe joint on the lower part of one side, and a grout outlet pipe joint is provided on the upper part of the outer wall of the sleeve body opposite to the grouting pipe joint, and the grout outlet pipe joint and the grouting pipe joint of adjacent sleeve bodies are connected by a Z-shaped connecting pipe, and several sleeve bodies are connected in sequence to form a row of integral structures through the Z-shaped connecting pipe.

2. The precast wall grouting sleeve as described in claim 1, characterized in that: The included angle between the axes of the grouting pipe joint and the grout outlet pipe joint is 180°.

3. A precast wall integral grouting sleeve as described in claim 2, characterized in that: In the aforementioned integrated structure, the top and bottom of the sleeve body are flush. The grouting pipe joint of the sleeve body at the starting end is connected to a first Z-shaped connecting pipe, the top of which is higher than the top of the sleeve body. The grout outlet pipe joint of the sleeve body at the last end is connected to a second Z-shaped connecting pipe, the second Z-shaped connecting pipe is upturned and its top is higher than the top of the sleeve body.

4. A precast wall integral grouting sleeve as described in claim 3, characterized in that: The grouting pipe joint and the grout outlet pipe joint are respectively fitted with PVC sleeves. One end of the PVC sleeve is connected to the grouting pipe joint or the grout outlet pipe joint, and the other end is connected to one end of the Z-shaped connecting pipe.

5. A precast wall integral grouting sleeve as described in claim 4, characterized in that: The Z-shaped connecting pipe includes an inclined pipe in the middle, a first horizontal pipe connected to the high end of the inclined pipe, and a second horizontal pipe connected to the low end of the inclined pipe. The angle between the inclined pipe and the first or second horizontal pipe is 135°.

6. A precast wall integral grouting sleeve as described in claim 5, characterized in that: The Z-shaped connecting pipe is made of metal or PVC.

7. A precast wall integral grouting sleeve as described in claim 6, characterized in that: The Z-shaped connecting pipe has several elastic plates arranged alternately inside.

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