Strong bond stress grouting sleeve and prefabricated shear wall thereof

Abstract

The invention discloses a high-bond-stress grouting sleeve and a prefabricated shear wall thereof, and belongs to the technical field of prefabricated wall bodies, the high-bond-stress grouting sleeve comprises a sleeve body, the side wall of the sleeve body is provided with two grout ports distributed up and down, each grout port is communicated with a grout pipe, and the grout pipes are communicated with the grout ports. The slurry pipe comprises a first type slurry pipe body and a second type slurry pipe body, the first type slurry pipe body is a straight pipe, the first type slurry pipe body is located on the cylinder body on the front side, the second type slurry pipe body comprises a straight part and a bent part, the second type slurry pipe body is located on the cylinder body on the rear side, and the straight part is connected with the bent part. The bent part is communicated with the cylinder body on the rear side; the straight parts of the first type of slurry pipe body and the second type of slurry pipe body are parallel to each other; and the lower end of the cylinder body is connected with a bolt through a thread. The device has the advantages of high precision and bond stress.

Description

Technical Field

[0001] The invention belongs to the technical field of prefabricated walls, and in particular relates to a strong-holding grouting sleeve and a prefabricated shear wall thereof. Background Art

[0002] Precast shear walls are concrete wall structures that are prefabricated in a factory and are commonly used in buildings to withstand lateral loads, such as those caused by earthquakes or wind. The walls can be solid or have cavities to reduce weight and provide space for wiring and plumbing. The advantages of precast shear walls include faster construction, better quality control, and less on-site construction disruption.

[0003] The strong bond grouting sleeve is a grouting connector used in construction. It ensures a firm bond between the connector and the connected component through high-strength bond and grouting material filling. This sleeve is usually used for steel bar connection. By pouring cement slurry or other grouting materials, the steel bar and the sleeve form a whole, thereby improving the stability and bearing capacity of the structure.

[0004] When manufacturing prefabricated shear walls, since the prefabricated shear walls are rectangular structures, it is necessary to arrange the vertical steel bars in a rectangular array, and then fill the steel bars with concrete or other materials to form an inner blade. In order to fix the steel bars, a number of grouting sleeves can be arranged in an array at the bottom of the inner blade, and then the lower ends of the steel bars are inserted into the grouting sleeves. However, the existing grouting sleeves are independent of each other, and it is difficult to arrange them in an accurate array, which makes the arrangement of the steel bars in the wall inaccurate. In addition, it may be difficult for the grouting material to completely fill the grouting sleeve, resulting in low bond strength. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a high-holding grouting sleeve and a prefabricated shear wall thereof, which has the advantages of precision and holding strength and solves the problems of the prior art.

[0006] The present invention is achieved as follows: a high-grip grouting sleeve includes a cylinder body, and two slurry ports distributed up and down are provided on the side wall of the cylinder body, each of the slurry ports is connected to a slurry pipe, and the slurry pipe includes a first type of slurry pipe body and a second type of slurry pipe body, the first type of slurry pipe body is a straight pipe, the first type of slurry pipe body is located on the front side of the cylinder body, the second type of slurry pipe body includes a straight portion and a curved portion, the second type of slurry pipe body is located on the rear side of the cylinder body, and the curved portion is connected to the rear side of the cylinder body; the straight portions of the first type of slurry pipe body and the second type of slurry pipe body are parallel; the lower end of the cylinder body is connected with a bolt by a thread.

[0007] As a preferred embodiment of the present invention, a threaded hole is provided in the middle of the cylinder, a threaded rod is connected to the inside of the threaded hole, a first socket is provided on the threaded rod, the first socket is at least partially located in the cylinder, the first socket is a circular hole, the diameter of the first socket is smaller than the inner diameter of the cylinder, and an outer expansion hole connected to the first socket is provided on the edge of the first socket.

[0008] As a preferred embodiment of the present invention, a slurry channel is provided inside the threaded rod, and the slurry channel is connected to the first insertion hole and the external expansion hole; a support rod is fixedly connected to the upper end of the bolt, and the support rod can be inserted into the first insertion hole, and the upper end of the support rod can be attached to the steel bar.

[0009] As a preferred embodiment of the present invention, the support rod can extend above the first insertion hole.

[0010] As a preferred embodiment of the present invention, both ends of the first type slurry pipe body and the second type slurry pipe body are provided with plugging pieces.

[0011] As a preferred embodiment of the present invention, one end of the threaded rod has an injection port, the other end of the threaded rod is closed, and a shift block is fixedly connected to the outer surface of the threaded rod on one side close to the injection port; the strong grip grouting sleeve also includes a U-shaped plate, a middle hole is provided in the middle of the U-shaped plate, the threaded rod is inserted into the middle hole, a swivel is rotatably connected to the side of the middle hole through a bearing, a shift piece is provided on the inner surface of the swivel, the shift piece can fit on the shift block, and a shift rod is provided on the outer surface of the swivel.

[0012] As a preferred embodiment of the present invention, a first limiting hole and a second limiting hole are provided on both sides of the U-shaped plate; the first type of slurry pipe body is inserted into the first limiting hole, and the second type of slurry pipe body is inserted into the second limiting hole.

[0013] As a preferred embodiment of the present invention, a threaded collar is connected to the outer side of the threaded rod via threads, a second insertion hole is provided on the outer side of the threaded collar, and a rod is inserted into the second insertion hole.

[0014] A prefabricated shear wall comprises: an inner blade plate, an insulation board and an outer blade plate which are sequentially arranged from the inside to the outside, and the inner blade plate, the insulation board and the outer blade plate are connected internally by a first connecting piece; a second connecting piece is provided on the surface of the inner blade plate for connecting a diagonal brace; the inner blade plate is a reinforced concrete plate, and a vertically arranged first steel bar is provided inside the inner blade plate, and the lower end of the first steel bar is supported by the strong grip grouting sleeve described in any one of claims 1 to 8; a transversely arranged second steel bar is connected to the first steel bar, and the upper end of the first steel bar and the left and right ends of the second steel bar both extend out of the concrete; the thickness of the insulation board is 30-100mm; tongues and grooves are provided on the upper and lower sides of the outer blade plate for upper and lower fitting to prevent water infiltration.

[0015] As a preferred embodiment of the present invention, windows are provided on the inner blade plate, the heat insulation plate and the outer blade plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention realizes the functions of grouting and overflowing by arranging different types of slurry pipes on both sides of the cylinder. The first type of slurry pipe body on the front side is a straight pipe, which is convenient for direct grouting; while the second type of slurry pipe body on the rear side includes a straight part and a curved part. The curved part design avoids the obstruction of the front cylinder body, ensuring smooth grouting. At the same time, the rotating bolt can not only fix the cylinder body to the substrate, but also further squeeze the slurry to improve the grip. This design significantly improves the practicality and performance of the grouting sleeve. First, the spatial obstruction problem in the grouting process is solved by the layout of the slurry pipes with different designs in the front and back, ensuring the smoothness and efficiency of the grouting process. Secondly, the dual mechanism of grouting and overflowing effectively eliminates the air in the sleeve, ensures the close connection between the steel bar and the cylinder body, and enhances the connection strength. Finally, the dual role of the rotating bolt - both fixing and squeezing the slurry, further improves the grip of the steel bar and ensures the stability and durability of the connection structure. In addition, the seal design at the upper end of the cylinder effectively prevents the leakage of the grouting material and improves the overall grouting quality.

[0018] 2. The present invention sets a threaded hole in the middle of the cylinder and connects the threaded rod to ensure that the front and rear cylinders are firmly connected. At the same time, the first plug hole and the outer expansion hole design on the threaded rod allow the slurry to pass through and allow the steel bar to be inserted into the first plug hole, limiting the steel bar and reducing its inclination. The existence of the outer expansion hole ensures that the slurry can flow smoothly even when the steel bar is inserted into the first plug hole. On the one hand, the threaded connection ensures the alignment and stability of the cylinder and prevents displacement; on the other hand, the ingenious combination of the first plug hole and the outer expansion hole solves the problem of easy inclination of the steel bar and does not hinder the flow of the slurry, thereby improving the construction efficiency and quality. It is especially suitable for scenes requiring high-fineness slurry.

[0019] 3. The present invention relies on the slurry channel provided inside the threaded rod to communicate with the first plug hole and the outer expansion hole. During the operation, slurry is injected into the system through the slurry channel, and the slurry is then distributed to the upper and lower sides of the casing through the first plug hole and the outer expansion hole, and finally overflows through the upper and lower slurry pipes, thereby completing the grouting process of the entire casing. At the same time, the designed support rod is connected with the bolt, which not only provides support for the steel bar, but also avoids the obstruction of the steel bar to the flow of slurry through its appropriate size design (such as the diameter of the support rod is 10%-30% of the diameter of the first plug hole), ensuring the smooth flow of slurry. The beneficial effect of this design lies in its significant efficiency improvement. Since the slurry is filled from the middle to the upper and lower sides of the cylinder at the same time, compared with the traditional method in which the slurry is injected from one side and overflows from the other side, this design greatly shortens the distance that the slurry flows in the casing, and only needs to flow half the height of the cylinder to complete the filling, which significantly improves the grouting efficiency. In addition, the design of the support rod also ensures that the steel bar will not become an obstacle to the flow of slurry, further ensuring the smooth progress of the grouting process. This innovative grouting method not only simplifies the operating process, but also improves project quality and efficiency, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 1 is a schematic structural diagram of a strong grip grouting sleeve provided in Example 1 of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the strong grip grouting sleeve provided in Example 2 of the present invention with the threaded rod omitted;

[0022] Figure 3 is a schematic diagram of the three-dimensional structure of the strong grip grouting sleeve provided by Embodiment 2 of the present invention from a first viewing angle;

[0023] Figure 4 The present invention Figure 3 A schematic diagram of the enlarged structure of part A;

[0024] Figure 5 The present invention Figure 3 A schematic diagram of the enlarged structure of part B;

[0025] Figure 6 is a schematic diagram of the three-dimensional structure of a U-shaped plate provided in Example 2 of the present invention;

[0026] Figure 7 is a schematic diagram of the three-dimensional structure of the strong grip grouting sleeve provided by Embodiment 2 of the present invention from a second viewing angle;

[0027] Figure 8 The present invention Figure 7 A schematic diagram of the enlarged structure of the middle C part;

[0028] Fig. 9It is a structural schematic diagram of the prefabricated shear wall provided by the present invention;

[0029] Fig.10 The present invention Fig. 9 Schematic diagram of the enlarged structure of part D.

[0030] In the figure: 1, cylinder; 2, first type slurry pipe body; 3, second type slurry pipe body; 4, bolt; 5, threaded hole; 6, threaded rod; 7, first plug hole; 8, outward expansion hole; 9, slurry channel; 10, support rod; 11, injection port; 12, shift block; 13, U-shaped plate; 14, middle hole; 15, swivel; 16, shift piece; 17, shift rod; 18, first limiting hole; 19, second limiting hole; 20, threaded collar; 21, second plug hole; 22, plug rod; 23, inner blade; 24, insulation board; 25, outer blade; 26, second connecting piece; 27, first steel bar; 28, second steel bar; 29, tongue and groove; 30, window. DETAILED DESCRIPTION

[0031] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0032] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0033] Example 1

[0034] See also Figure 1 A strong grip grouting sleeve provided by an embodiment of the present invention comprises a cylinder 1, and two slurry ports distributed up and down are provided on the side wall of the cylinder 1, each of the slurry ports is connected with a slurry pipe, and the slurry pipe comprises a first type of slurry pipe body 2 and a second type of slurry pipe body 3, the first type of slurry pipe body 2 is a straight pipe, the first type of slurry pipe body 2 is located on the front side of the cylinder 1, the second type of slurry pipe body 3 comprises a straight portion and a curved portion, the second type of slurry pipe body 3 is located on the rear side of the cylinder 1, and the curved portion is connected with the rear side of the cylinder 1; the straight portions of the first type of slurry pipe body 2 and the second type of slurry pipe body 3 are parallel; the lower end of the cylinder 1 is connected with a bolt 4 by a thread.

[0035] With this arrangement, during arrangement, the cylinder 1 with the first type slurry pipe body 2 is arranged at the front side, and the cylinder 1 with the second type slurry pipe body 3 is arranged at the rear side; since the second type grouting pipe has a curved portion, it will not be blocked by the sleeve at the front side, and will not hinder grouting and overflow. Since the straight portions of the first type slurry pipe body 2 and the second type slurry pipe body 3 are parallel, the cylinder 1 at the front side and the cylinder 1 at the rear side can be aligned to a certain extent, which is convenient for improving the accuracy of arrangement.

[0036] Then the lower end of the steel bar is inserted into the cylinder 1 from above. Since each cylinder 1 is connected to two slurry pipes, slurry can be injected from one slurry pipe to allow the slurry to enter the cylinder 1 and fill the gap between the steel bar and the cylinder 1. When the gap is full, the slurry can overflow from the other slurry pipe (a seal can be provided at the upper end of the cylinder 1 to prevent leakage of grouting materials and ensure the quality of grouting). Through this arrangement, the air in the cylinder 1 can be discharged and the steel bar and the cylinder 1 can be connected as one.

[0037] Then, the bolt 4 is rotated. On the one hand, multiple sleeves can be fixed on the bottom substrate (the bottom substrate of the inner blade 23 can be provided with a plurality of positioning holes or strip holes on the substrate for accommodating the bolt 4) through the bolt 4. On the other hand, by screwing the bolt 4 into the cylinder 1, the slurry can be squeezed to improve the gripping force on the steel bars.

[0038] Exemplarily, the barrel 1 is cylindrical.

[0039] Example 2

[0040] See also Figure 2-Figure 8 A threaded hole 5 is provided in the middle of the barrel 1, a threaded rod 6 is connected to the inside of the threaded hole 5, a first plug hole 7 is provided on the threaded rod 6, the first plug hole 7 is at least partially located in the barrel 1, the first plug hole 7 is a round hole, the diameter of the first plug hole 7 is smaller than the inner diameter of the barrel 1, and an outer expansion hole 8 connected to the first plug hole 7 is provided on the edge of the first plug hole 7.

[0041] This setting has the following effects:

[0042] First, by providing the threaded rod 6, the front cylinder 1 and the rear cylinder 1 can be connected together to form a system, so that the front cylinder 1 and the rear cylinder 1 can be aligned, and because of the threaded connection, when the threaded rod 6 does not rotate, the front cylinder 1 and the rear cylinder 1 can be prevented from approaching or moving away from each other;

[0043] Second, the first plug hole 7 and the outer expansion hole 8 are provided to allow the slurry to pass through. Moreover, when the diameter of the steel bar corresponds to the diameter of the first plug hole 7, the steel bar can be inserted into the first plug hole 7, so that the steel bar can be limited by the first plug hole 7 to reduce the inclination of the steel bar, because if the difference between the inner diameter of the steel bar and the cylinder 1 is large, it is easy to tilt. Due to the provision of the outer expansion hole 8, even if the steel bar is inserted into the first plug hole 7, the slurry can pass through the outer expansion hole 8. It should be noted that in this setting, the slurry needs to have a higher degree of fineness. And if the above-mentioned threaded rod 6 is adopted, the slurry is still injected from the slurry pipe at the lower end, and the slurry passes through the first plug hole 7 and the outer expansion hole 8, and finally overflows from the slurry pipe at the upper end.

[0044] Furthermore, a slurry channel 9 is provided inside the threaded rod 6, and the slurry channel 9 is connected to the first insertion hole 7 and the external expansion hole 8; the upper end of the bolt 4 is fixedly connected with a support rod 10, and the support rod 10 can be inserted into the first insertion hole 7, and the upper end of the support rod 10 can be attached to the steel bar.

[0045] Through this setting, a new use can be unlocked, that is, slurry is injected through the slurry channel 9, and then the slurry enters the interior of the cylinder 1 through the first plug hole 7 or the outer expansion hole 8, and is filled simultaneously above and below the cylinder 1. When the filling is completed, it overflows through the upper and lower slurry pipes. That is, in this scheme, the slurry is not injected into another slurry pipe through one slurry pipe and overflows, but is injected from the slurry channel 9 in the middle and overflows from the upper and lower slurry pipes. Through this setting, the cylinder 1 on the front and rear sides can be grouted at the same time (in the prior art, the sleeves on the front and rear sides are grouted separately), and because the slurry is filled from the middle in both the upper and lower directions, the slurry only needs to flow half the height of the cylinder 1 to complete the filling, thereby improving efficiency. In addition, since the support rod 10 is set, the steel bar can be supported so that the bottom of the steel bar can be inserted into the first plug hole 7, but it will not completely penetrate the first plug hole 7, so that the steel bar will not hinder the flow of slurry in the slurry channel 9. Exemplarily, the diameter of the support rod 10 is 10%-30% of the diameter of the first insertion hole 7 .

[0046] Furthermore, by rotating the bolt 4, the support rod 10 can extend above the first insertion hole 7. With this arrangement, the depth of the steel bar inserted into the cylinder 1 can be adjusted, and since the steel bar is supported, the slurry is not hindered from being injected into the cylinder 1 from the first insertion hole 7.

[0047] Furthermore, the ends of the first type slurry pipe body 2 and the second type slurry pipe body 3 are both provided with plugging parts (not shown in the figure). When the slurry is injected through the slurry channel 9, the front cylinder body 1 is first filled with slurry. When the filling is completed, the first type slurry pipe body 2 can be closed by the plugging part, and then the slurry will flow into the rear cylinder body 1, and continue to fill the rear cylinder body 1. When the slurry overflows from the second type slurry pipe body 3, the grouting is completed. The plugging part can be set as a valve or a plug, which is not limited here.

[0048] Furthermore, one end of the threaded rod 6 has an injection port 11, and the other end of the threaded rod 6 is closed. A shift block 12 is fixedly connected to the outer surface of one side of the threaded rod 6 near the injection port 11. The strong grip grouting sleeve also includes a U-shaped plate 13, a middle hole 14 is provided in the middle of the U-shaped plate 13, the threaded rod 6 is inserted into the middle hole 14, and a swivel 15 is rotatably connected to the side of the middle hole 14 through a bearing, and a shift piece 16 is provided on the inner surface of the swivel 15, and the shift piece 16 can fit the shift block 12, and a shift rod 17 is provided on the outer surface of the swivel 15. With this arrangement, the swivel 15 can be rotated by shifting the shift rod 17, and then the swivel 15 drives the threaded rod 6 to rotate, and the shift piece 16 rotates the threaded rod 6 by shifting the shift block 12.

[0049] Furthermore, the U-shaped plate 13 is provided with a first limiting hole 18 and a second limiting hole 19 on both sides; the first type of slurry pipe body 2 is inserted into the first limiting hole 18, and the second type of slurry pipe body 3 is inserted into the second limiting hole 19. When the threaded rod 6 is rotated, the first limiting hole 18 and the second limiting hole 19 respectively limit the first type of slurry pipe body 2 and the second type of slurry pipe body 3 to prevent the cylinder body 1 at the front and rear sides from tilting.

[0050] It should be noted that the gap between the front cylinder 1 and the rear side can be adjusted. For example, three first plug holes 7 are provided, two cylinders 1 are matched with two of the first plug holes 7, and the remaining first plug holes 7 are sealed by other parts. For example, the specific scheme of sealing the remaining first plug holes 7 by other parts is as follows:

[0051] The outer side of the threaded rod 6 is connected with a threaded collar 20 by threading, and the outer side of the threaded collar 20 is provided with a second plug hole 21, and a plug rod 22 is inserted in the second plug hole 21. Through this setting, the two cylinders 1 cooperate with two of the first plug holes 7, and the threaded collar 20 can seal the remaining first plug holes 7. It should be noted that four or more first plug holes 7 can also be provided, and the number or length of the threaded collar 20 can be increased to seal the redundant first plug holes 7. And through this setting, it also has the following uses: first, by inserting a short plug rod 22 into the second plug hole 21, the threaded collar 20 can be rotated by toggling the plug rod 22; second, by inserting a long plug rod 22 into the second plug holes 21 of a row of several threaded collars 20, several groups of cylinders 1 can be aligned, which is convenient for forming a rectangular array distribution and preventing the threaded collar 20 from rotating by mistake.

[0052] Furthermore, in one embodiment, two first insertion holes 7 are provided, and the two first insertion holes 7 are respectively matched with the two barrels 1, and the threaded rod 6 has opposite threads, and the distance between the two barrels 1 can be finely adjusted by rotating the threaded rod 6. If a part of the first insertion hole 7 moves to the outside of the barrel 1, it can be blocked by the threaded collar 20, and the threaded collar 20 can abut against the outer surface of the side wall of the barrel 1, thereby locking the barrel 1 and the threaded rod 6.

[0053] A prefabricated shear wall comprises: an inner blade 23, an insulation board 24 and an outer blade 25 which are sequentially arranged from the inside to the outside, and the inner blade 23, the insulation board 24 and the outer blade 25 are connected internally by a first connecting piece; a second connecting piece 26 is provided on the surface of the inner blade 23 for connecting a diagonal brace 10 (not shown in the figure); the inner blade 23 is a reinforced concrete slab, and a vertically arranged first steel bar 27 is provided inside the inner blade 23, and the lower end of the first steel bar 27 is supported by the strong grip grouting sleeve; a transversely arranged second steel bar 28 is connected to the first steel bar 27, and the upper end of the first steel bar 27 and the left and right ends of the second steel bar 28 extend out of the concrete; the thickness of the insulation board 24 is 30-100mm; a tongue and groove 29 is provided on the upper and lower sides of the outer blade 25 for upper and lower fitting to prevent water from seeping in, and the outer blade 25 is used to protect the exterior wall.

[0054] Furthermore, windows 30 are provided on the inner blade plate 23 , the heat insulation plate 24 and the outer blade plate 25 .

[0055] Working principle of the present invention:

[0056] During arrangement, the cylinder 1 with the first type of slurry pipe body 2 is arranged at the front side, and the cylinder 1 with the second type of slurry pipe body 3 is arranged at the rear side; since the second type of grouting pipe has a bend, it will not be blocked by the sleeve on the front side, and will not hinder grouting and overflow. Since the straight parts of the first type of slurry pipe body 2 and the second type of slurry pipe body 3 are parallel, the cylinder 1 on the front side and the cylinder 1 on the rear side can be aligned to a certain extent, which is convenient for improving the accuracy of arrangement. Then the lower end of the steel bar is inserted into the cylinder 1 from above. Since each cylinder 1 is connected to two slurry pipes, slurry can be injected from one slurry pipe, so that the slurry enters the cylinder 1, fills the gap between the steel bar and the cylinder 1, and can overflow from the other slurry pipe when it is filled. Through this arrangement, the air in the cylinder 1 can be discharged, and the steel bar and the cylinder 1 can be connected as one. Then, the bolt 4 is rotated. On the one hand, multiple cylinders 1 can be fixed on the bottom substrate through the bolt 4. On the other hand, by screwing the bolt 4 into the cylinder 1, the slurry can be squeezed to improve the gripping force on the steel bars.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A strong grip grouting sleeve, comprising a cylinder (1), wherein the side wall of the cylinder (1) is provided with two grouting ports distributed vertically, characterized in that: Each of the slurry ports is connected to a slurry pipe, the slurry pipe comprising a first type of slurry pipe body (2) and a second type of slurry pipe body (3), the first type of slurry pipe body (2) being a straight pipe, the first type of slurry pipe body (2) being located on the front side of the cylinder (1), the second type of slurry pipe body (3) comprising a straight portion and a curved portion, the second type of slurry pipe body (3) being located on the rear side of the cylinder (1), and the curved portion being connected to the rear side of the cylinder (1); the straight portions of the first type of slurry pipe body (2) and the second type of slurry pipe body (3) being parallel; The lower end of the cylinder (1) is connected to a bolt (4) via a thread.

2. A strong grip grouting sleeve as claimed in claim 1, characterized in that: A threaded hole (5) is provided in the middle of the cylinder (1), a threaded rod (6) is connected to the inside of the threaded hole (5), a first plug hole (7) is provided on the threaded rod (6), the first plug hole (7) is at least partially located in the cylinder (1), the first plug hole (7) is a circular hole, the diameter of the first plug hole (7) is smaller than the inner diameter of the cylinder (1), and an outer expansion hole (8) connected to the first plug hole (7) is provided at the edge of the first plug hole (7).

3. A strong grip grouting sleeve as claimed in claim 2, characterized in that: A slurry channel (9) is provided inside the threaded rod (6), and the slurry channel (9) is connected to the first insertion hole (7) and the external expansion hole (8); The upper end of the bolt (4) is fixedly connected to a support rod (10), the support rod (10) can be inserted into the first insertion hole (7), and the upper end of the support rod (10) can be attached to the steel bar.

4. A strong grip grouting sleeve as claimed in claim 3, characterized in that: The support rod (10) can extend above the first insertion hole (7).

5. A strong grip grouting sleeve as claimed in claim 4, characterized in that: The ends of the first type slurry pipe body (2) and the second type slurry pipe body (3) are both provided with blocking pieces.

6. A strong grip grouting sleeve as claimed in claim 5, characterized in that: One end of the threaded rod (6) is provided with an injection port (11), the other end of the threaded rod (6) is closed, and a shifting block (12) is fixedly connected to an outer surface of one side of the threaded rod (6) close to the injection port (11); The strong grip grouting sleeve also includes a U-shaped plate (13), a middle hole (14) is provided in the middle of the U-shaped plate (13), the threaded rod (6) is inserted into the middle hole (14), a swivel (15) is rotatably connected to the side of the middle hole (14) via a bearing, a paddle (16) is provided on the inner surface of the swivel (15), the paddle (16) can be fitted on the paddle block (12), and a paddle rod (17) is provided on the outer surface of the swivel (15).

7. A strong grip grouting sleeve as claimed in claim 6, characterized in that: A first limiting hole (18) and a second limiting hole (19) are provided on both sides of the U-shaped plate (13); the first type of slurry pipe body (2) is plugged into the first limiting hole (18), and the second type of slurry pipe body (3) is plugged into the second limiting hole (19).

8. A strong grip grouting sleeve as claimed in claim 7, characterized in that: The outer side of the threaded rod (6) is connected to a threaded collar (20) via threads, and a second insertion hole (21) is provided on the outer side of the threaded collar (20), and an insertion rod (22) is inserted into the second insertion hole (21).

9. A prefabricated shear wall, characterized in that: include: An inner blade plate (23), a heat preservation plate (24) and an outer blade plate (25) are sequentially arranged from the inside to the outside, and the inner blade plate (23), the heat preservation plate (24) and the outer blade plate (25) are connected by a first connecting piece; a second connecting piece (26) is provided on the surface of the inner blade plate (23) for connecting the diagonal brace rod (10); The inner blade plate (23) is a reinforced concrete plate, and a vertically arranged first steel bar (27) is provided inside the inner blade plate (23), and the lower end of the first steel bar (27) is supported by the strong-grip grouting sleeve according to any one of claims 1 to 8; a transversely arranged second steel bar (28) is connected to the first steel bar (27), and the upper end of the first steel bar (27) and the left and right ends of the second steel bar (28) both extend out of the concrete; The thickness of the insulation board (24) is 30-100 mm; The outer blade plate (25) is provided with tongue and groove (29) on both sides thereof, which are used for upper and lower matching and clamping to prevent water from penetrating.

10. A prefabricated shear wall according to claim 9, characterized in that: The inner blade plate (23), the heat-insulating plate (24) and the outer blade plate (25) are all provided with windows (30).

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