A multifunctional auxiliary part for machined full grouting sleeve and its assembly and disassembly method

Abstract

The present invention discloses a multifunctional auxiliary part of a machined full-grouting sleeve and a loading and unloading method thereof, comprising a grouting sleeve, a grouting port and a grouting outlet, wherein a sealing auxiliary part is sleeved inside the grouting sleeve, and the sealing auxiliary part comprises a middle column, a first end plug part and a second end plug part which are arranged as an integral structure; the first end plug part is arranged at one end of the grouting outlet, and a steel bar passes through the first end plug part and extends into the accommodating cavity; the second end plug part is arranged at one end of the grouting outlet, one end of a positioning screw passes through the second end plug part and abuts against the steel bar, and the other end is connected with a gasket and a locking nut, and a clamping retaining ring is provided at the end platform of the positioning screw; the loading and unloading method of the multifunctional auxiliary part is simple, easy to operate and has excellent sealing performance, and the sealing auxiliary part, the positioning screw, the locking nut, etc. can all be used for the next grouting sleeve installation, which can save a lot of manufacturing and installation costs.

Description

Technical Field

[0001] The invention relates to the technical field of building industry, and in particular to a multifunctional auxiliary part of a machined full-grouting sleeve and a method for assembling and disassembling the same. Background Art

[0002] As an important component for connecting steel bars during on-site construction, the grouting sleeve for steel bar connection is a part that connects the threaded steel bars in adjacent reinforced concrete building components. With the development of prefabricated buildings, its application has become more and more mature. The grouting sleeve solves the problem of inconvenient connection of prefabricated on-site steel bars. The use of the grouting sleeve makes on-site assembly construction in the construction industry possible, greatly improving the efficiency of construction and saving time, manpower and site costs.

[0003] Whether in the prefabrication plant or in on-site assembly, the sealing rubber plug and rubber column are indispensable. The rubber column realizes the positioning of the grouting sleeve on the prefabricated formwork end plate and plays a sealing role to prevent the grouting material from entering the sleeve during the pouring process. The sealing rubber plug prevents the grouting material from entering the sleeve along the inner wall of the sleeve and the outer wall of the steel bar, playing a sealing role.

[0004] For example, a Chinese invention patent (publication number: CN109235779A) disclosed in 2019 a full grouting sleeve structure and method that can achieve self-centering of steel bars. The grouting sleeve structure that can achieve self-centering of steel bars includes a sleeve body with a threaded inner wall, a nut with an elastic steel sheet, a grouting hole, a grouting hole, a rubber plug, etc.; the rubber plug in the grouting sleeve will remain permanently in the prefabricated structure after grouting and cannot be removed.

[0005] For example, a Chinese utility model patent (publication number: CN208730019U) disclosed a full grouting sleeve in 2019, wherein a positioning plug is provided at the bottom of the full grouting sleeve, and the positioning plug includes a positioning column, a rubber column, and an adjusting nut, and a fixing device is provided on the inner side of the bellows; the rubber column in the grouting sleeve of this structure is only a small section, and the rubber plug at the other end cannot be removed either.

[0006] Since the sealing rubber plug cannot be removed, it will remain in the building permanently, which is extremely wasteful. At the same time, the rubber plug permanently retained in the grouting sleeve will cause discontinuous defects inside the building materials. Summary of the invention

[0007] The purpose of the present invention is to provide a multifunctional auxiliary part of a machined full-grouting sleeve and a method for assembling and disassembling the same in view of the problems existing in the prior art.

[0008] To achieve the above object, the technical solution adopted by the present invention is:

[0009] A multifunctional auxiliary part of a machined full-grouting sleeve comprises a grouting sleeve, the grouting sleeve having a grouting port and a grouting discharge port, a sealing auxiliary part is sleeved inside the grouting sleeve, the sealing auxiliary part comprises a middle column, a first end plug and a second end plug which are arranged as an integral structure, the first end plug, the second end plug and the middle column together form an internal accommodating cavity and an end platform; the first end plug is arranged at one end of the grouting discharge port, and a steel bar passes through the first end plug and penetrates into the accommodating cavity; the second end plug is arranged at one end of the grouting port, one end of a positioning screw passes through the second end plug and abuts against the steel bar, and the other end is connected with a gasket and a locking nut, and a clamping ring is provided at the end platform of the positioning screw.

[0010] This machine processes the multifunctional auxiliary parts of the full grouting sleeve by integrating the structures of the traditional rubber column and the rubber plug into one, so that the sealing auxiliary parts have the fixing sealing function of the rubber column and the sealing function of the rubber plug, and have good sealing performance. It can prevent the slurry outside the grouting sleeve from entering the inside of the grouting sleeve during the prefabrication and assembly process, and after the prefabrication and assembly is completed, the sealing auxiliary parts are taken out of the grouting sleeve as a whole, so as to realize the recycling of sealing auxiliary parts, positioning screws, locking nuts and gaskets, which saves costs for customers and a lot of resources for society.

[0011] Since the sealing auxiliary is recyclable, it is removed before grouting the interior of the grouting sleeve, thereby preventing a seal similar to a rubber plug from being permanently retained in the grouting sleeve (i.e., inside the building structure) and avoiding discontinuity defects inside the building material.

[0012] The coaxial arrangement of the first end plug portion and the second end plug portion not only forms an internal accommodating cavity, but also facilitates the automatic centering of the steel bar and the positioning screw. The positioning screw can replace the steel bar limiting block to realize the positioning of the steel bar in the grouting sleeve; at the same time, when the positioning screw is tightened with sufficient tightening torque, the first end plug portion and the second end plug portion of the sealing auxiliary component are compressed and expanded by the limiting effect of the end platform inside the sealing auxiliary component (the clamping retaining ring on the positioning screw is pressed on the end platform), and the outer wall of the sealing auxiliary component is tightly against the inner wall of the grouting sleeve, thereby realizing sealing and fixation of the grouting sleeve.

[0013] Moreover, compared with the grouting sleeve of the same length that does not adopt this method, the effective anchoring length of the grouting sleeve is increased, and the anchoring performance is improved; and in the subsequent grouting process (grouting into the inside of the grouting sleeve), since there is no steel bar limit block, the grouting process is smooth and the grouting is denser.

[0014] Furthermore, the sealing auxiliary component is a hollow cylindrical structure with a consistent outer diameter, the inner diameter of the middle cylinder is larger than the inner diameter of the first end plug and the inner diameter of the second end plug, and the axial length of the second end plug is larger than the axial length of the first end plug.

[0015] Furthermore, the outer diameter of the sealing auxiliary component is smaller than the inner diameter of the grouting sleeve (the inner diameter of the annular protrusion formed on the inner circumferential surface after rolling).

[0016] The outer diameter of the sealing auxiliary component is consistent with and slightly smaller than the inner diameter of the grouting sleeve, so that it is easy to install in the grouting sleeve. After being compressed, deformed and expanded circumferentially, it can also form a sealing state with the inner wall of the grouting sleeve. After the locking force is removed, the sealing auxiliary component can return to its original state, making it easy to be removed from the grouting sleeve.

[0017] Furthermore, the inner hole of the first end plug is a continuous concave-convex structure, and the inner diameter of the convex part is smaller than the outer diameter of the steel bar; the entrance of the inner hole of the first end plug is in a bell-mouth shape.

[0018] The inner hole of the first end plug is configured in such a structure to facilitate the insertion of the steel bar, and has the function of centering the steel bar, thereby avoiding the internal deviation of the steel bar.

[0019] Furthermore, the grouting sleeve is a rolled full grouting sleeve, and the depth of the rolled groove of the grouting sleeve close to the first end plug is greater than the depth of the rolled groove of the remaining parts.

[0020] Preferably, the depth of the rolled groove of the first end plug of the grouting sleeve is about 1 mm deeper than the depth of the rolled groove of the remaining parts, so that the two ends of the sealing auxiliary component can form a sealing surface with the part in contact with the rolled groove, thereby preventing slurry from flowing into the inside of the grouting sleeve during external grouting.

[0021] Furthermore, the diameter of the positioning screw is smaller than the inner diameter of the inner hole of the second end plug portion, and the diameter of the clamping retaining ring is larger than the inner diameter of the inner hole of the second end plug portion.

[0022] Furthermore, in the non-compression state, the axial length of the sealing auxiliary is longer than the length of the grouting sleeve, which facilitates the installation of the sealing auxiliary on the one hand, and allows the sealing auxiliary to have a shrinkage amount on the other hand; in the compression state, the two end surfaces of the sealing auxiliary are respectively flush with the two end surfaces of the grouting sleeve, that is, the sealing auxiliary produces axial contraction and radial (circumferential) expansion, which is beneficial to sealing.

[0023] Furthermore, the sealing auxiliary part is a rubber part or a cloth-reinforced rubber part or a plastic part with various hardness and deformation capacity that can meet the requirements of use.

[0024] Furthermore, a substrate is bonded to the outer contour of the sealing auxiliary component. The substrate is very thin and is bonded to the sealing auxiliary component. It is a disposable or reusable item, which is conducive to the separation of the external grouting material and the sealing auxiliary component after the installation of the grouting sleeve is completed.

[0025] Furthermore, the grouting sleeve is arranged and abutted on the prefabricated template end plate, one end of the positioning screw passes through the prefabricated template end plate, and the gasket and the locking nut are sequentially sleeved and fastened on the outer side of the prefabricated template end plate. The prefabricated template end plate is provided with a through hole for the positioning screw to pass through at the installation position of the grouting sleeve.

[0026] Furthermore, a method for assembling and disassembling the multifunctional auxiliary part of the machined full grouting sleeve as described above includes an installation method and a disassembly method.

[0027] The installation method is as follows: a positioning screw is arranged in the sealing auxiliary component, so that the positioning screw is located at the second end plug of the sealing auxiliary component and a part of it is exposed, the sealing auxiliary component is sleeved in the grouting sleeve, the grouting sleeve is placed on the end plate of the prefabricated component template, a gasket and a locking nut are sleeved into the exposed part of the positioning screw and locked, at which time the sealing auxiliary component is in a compressed radial expansion and axial contraction state; then a steel bar is inserted into the first end plug of the sealing auxiliary component, and the steel bar will be automatically aligned and abutted with the positioning screw; after the installation of the steel bar is completed, grouting is performed on the outside of the grouting sleeve to complete the casting of the entire prefabricated component; before casting, the grouting port and the grouting outlet are respectively connected by PVC pipes, and the PVC pipes are led to the outside of the component.

[0028] The disassembly method is as follows: after the entire prefabricated component is cast and solidified, the locking nut is loosened, and the locking nut and the gasket are removed from the bottom of the prefabricated component template end plate in turn. After removing the prefabricated component template end plate, the positioning screw is pulled toward the outside of the grouting sleeve. Under the action of the clamping retaining ring, the positioning screw pulls the entire sealing auxiliary component out of the grouting sleeve, thereby completing the disassembly and recovery of the sealing auxiliary component.

[0029] The assembly and disassembly method is simple and easy to operate; the sealing auxiliary component, the positioning screw, the locking nut, etc. can all be used for the next grouting sleeve installation, which can save a lot of manufacturing and installation costs.

[0030] Compared with the prior art, the invention has the following beneficial effects: 1. The multifunctional auxiliary parts of the full grouting sleeve processed by the machine are integrated so that the sealing auxiliary parts have good sealing performance and can be taken out as a whole from the grouting sleeve after prefabrication and assembly, so as to realize the recycling of sealing auxiliary parts, positioning screws, locking nuts and gaskets, which saves costs for customers and saves a lot of resources for society; 2. It avoids the permanent retention of sealing parts similar to rubber plugs in the grouting sleeve (i.e., inside the building structure), and avoids the discontinuous defects inside the building materials; 3. It can realize the automatic centering function of the steel bar and the positioning screw, and avoid the internal deflection of the steel bar; at the same time, it avoids the use of the steel bar limit block, so that the subsequent grouting process is smooth and the grouting is more dense; 4. Compared with the grouting sleeve of the same length that does not adopt this method, the effective anchoring length of the grouting sleeve is increased, and the anchoring performance is improved; 5. The loading and unloading method is simple and easy to operate, and the sealing auxiliary parts, the positioning screws, the locking nuts, etc. can all be used for the next grouting sleeve installation, which can save a lot of manufacturing and installation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a cross-sectional view of the overall structure of a machined full-grouting sleeve multifunctional auxiliary part of the present invention (before locking);

[0032] Figure 2 This is a view of a multifunctional auxiliary part of a machined full grouting sleeve according to the present invention after tightening a locking nut;

[0033] Figure 3 This is a view of a multifunctional auxiliary part of a machined full grouting sleeve according to the present invention, after tightening the locking nut, and inserting the steel bar;

[0034] Figure 4 It is a schematic diagram of the sealing auxiliary component structure of a machined full-grouting sleeve multifunctional auxiliary component of the present invention;

[0035] Figure 5 It is a partial enlarged schematic diagram of the rolling groove at the grouting end of a machined full grouting sleeve multifunctional auxiliary part of the present invention;

[0036] Figure 6 It is a partial enlarged schematic diagram of an end platform of a machined full-grouting sleeve multifunctional auxiliary part of the present invention;

[0037] In the figure: 1. grouting sleeve; 2. grouting port; 3. grouting port; 4. sealing auxiliary parts; 401. middle column; 402. first end plug; 403. second end plug; 404. accommodating cavity; 405. end platform; 5. steel bar; 6. positioning screw; 7. gasket; 8. locking nut; 9. clamping ring; 10. prefabricated formwork end plate; 11. rolling groove; 12. concave-convex continuous structure; 13. bell mouth. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "middle", "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] Embodiment 1:

[0041] like Figure 1 and Figure 6 As shown, a multifunctional auxiliary part of a machined full-grouting sleeve comprises a grouting sleeve 1, wherein the grouting sleeve 1 has a grouting port 2 and a grouting port 3, wherein a sealing auxiliary part 4 is sleeved inside the grouting sleeve 1, wherein the sealing auxiliary part 4 has a middle column 401, a first end plug part 402 and a second end plug part 403 which are arranged as an integral structure, wherein the first end plug part 402, the second end plug part 403 and the middle column 401 are enclosed to form an internal accommodating cavity 404 and an end platform 405; the first end plug part 402 is arranged at one end of the grouting port 3, and a steel bar 5 passes through the first end plug part 402 and extends into the accommodating cavity 404; the second end plug part 403 is arranged at one end of the grouting port 2, one end of a positioning screw 6 passes through the second end plug part 403 and extends into the accommodating cavity 404 to abut against the steel bar 5, and the other end is connected with a gasket 7 and a locking nut 8, and the positioning screw 6 is provided with a clamping retaining ring 9 at the end platform 405.

[0042] This machine processes the multifunctional auxiliary parts of the full grouting sleeve by integrating the structures of the traditional rubber column and the rubber plug, so that the sealing auxiliary part 4 combines the fixing sealing function of the rubber column and the sealing function of the rubber plug, has good sealing performance, and can prevent the slurry outside the grouting sleeve 1 from entering the interior of the grouting sleeve 1 during the prefabrication and assembly process. After the prefabrication and assembly are completed, the sealing auxiliary part 4 is taken out of the grouting sleeve 1 as a whole, so as to realize the recycling of the sealing auxiliary part 4, the positioning screw 6, the locking nut 8 and the gasket 7, which saves costs for customers and a lot of resources for the society.

[0043] Since the sealing auxiliary part 4 is recyclable, the sealing auxiliary part 4 is removed before grouting the interior of the grouting sleeve 1, thereby preventing a seal similar to a rubber plug from being permanently retained in the grouting sleeve (i.e., inside the building structure) and avoiding discontinuity defects inside the building material.

[0044] The coaxial arrangement of the first end plug portion 402 and the second end plug portion 403 not only forms an internal accommodating cavity 404, but also facilitates the automatic centering of the steel bar 5 and the positioning screw 6. The positioning screw 6 can replace the steel bar limiting block to realize the positioning of the steel bar 5 in the grouting sleeve 1; at the same time, when the positioning screw 6 is tightened with sufficient tightening torque, it is limited by the end platform 405 inside the sealing auxiliary component 4 (the clamping retaining ring 9 on the positioning screw 6 is pressed on the end platform 405), so that the first end plug portion 402 and the second end plug portion 403 of the sealing auxiliary component 4 are compressed and expanded, and the outer wall of the sealing auxiliary component 4 at this location is close to the inner wall of the grouting sleeve 1, thereby realizing sealing and fixation of the grouting sleeve.

[0045] Moreover, compared with the grouting sleeve of the same length that does not adopt this method, the effective anchoring length of the grouting sleeve 1 is increased, and the anchoring performance is improved; and in the subsequent grouting process (grouting into the interior of the grouting sleeve 1), since there is no steel bar limit block, the grouting process is smooth and the grouting is denser.

[0046] Further, such as Figure 4 As shown, the sealing auxiliary component 4 is a hollow cylindrical structure with a consistent outer diameter, the inner diameter of the middle cylinder 401 is larger than the inner diameter of the first end plug 402 and the inner diameter of the second end plug 403, and the axial length of the second end plug 403 is larger than the axial length of the first end plug 402, ensuring sufficient strength to pull out the entire sealing auxiliary component.

[0047] Furthermore, the outer diameter of the sealing auxiliary component 4 is smaller than the inner diameter of the grouting sleeve 1 (the inner diameter of the annular protrusion formed on the inner circumferential surface after rolling).

[0048] The outer diameter of the sealing auxiliary component 4 is consistent with and slightly smaller than the inner diameter of the grouting sleeve 1, so that it is easy to install in the grouting sleeve 1. After being compressed, deformed and expanded circumferentially, it can also form a sealing state with the inner wall of the grouting sleeve 1. After the locking force is removed, the sealing auxiliary component 4 can return to its original state, so that it can be easily removed from the grouting sleeve 1.

[0049] Furthermore, the inner hole of the first end plug 402 is a concave-convex continuous structure 12, and the inner diameter of the convex part is smaller than the outer diameter of the steel bar 5; the entrance of the inner hole of the first end plug 402 is in the shape of a bell mouth 13 (a shape with a large chamfer).

[0050] The inner hole of the first end plug 402 is configured in such a structure to facilitate the insertion of the steel bar 5 , and has a function of centering the steel bar, thereby preventing the steel bar 5 from being internally deflected.

[0051] Furthermore, the grouting sleeve 1 is a rolled full grouting sleeve, and the depth of the rolled groove 11 at the place where the grouting sleeve 1 cooperates with the first end plug 402 is greater than the depth of the rolled groove 11 at other parts.

[0052] Preferably, the depth of the rolled groove 11 at the place where the grouting sleeve 1 cooperates with the first end plug 402 is about 1 mm deeper than the depth of the rolled groove 11 at other parts, so that the upper end of the sealing auxiliary component 4 can form a sealing surface with the part in contact with the rolled groove, thereby preventing slurry from flowing into the inside of the grouting sleeve during external grouting.

[0053] Furthermore, the diameter of the positioning screw 6 is smaller than the inner diameter of the inner hole of the second end plug portion 403 , and the diameter of the clamping retaining ring 9 is larger than the inner diameter of the inner hole of the second end plug portion 403 .

[0054] Furthermore, in the non-compression state, the axial length of the sealing auxiliary component 4 is longer than the length of the grouting sleeve 1, which is convenient for the installation of the sealing auxiliary component 4 on the one hand, and allows the sealing auxiliary component 4 to have a shrinkage amount on the other hand; in the compression state, the two end surfaces of the sealing auxiliary component 4 are respectively flush with the two end surfaces of the grouting sleeve 1, that is, the sealing auxiliary component 4 produces axial shrinkage and radial (circumferential) expansion, which is beneficial to sealing.

[0055] Furthermore, the sealing auxiliary component 4 is a rubber component having a certain hardness and deformation ability.

[0056] Furthermore, a substrate (not shown in the figure) is bonded to the outer contour of the sealing auxiliary 4, especially the first end plug. The substrate is very thin and is bonded to the sealing auxiliary 4. It is a disposable or reusable item. After the installation of the grouting sleeve 1 is completed, it is convenient to separate the external grouting material from the sealing auxiliary 4.

[0057] Furthermore, the lower end of the grouting sleeve 1 is arranged and abutted on the prefabricated formwork end plate 10, one end of the positioning screw 6 passes through the prefabricated formwork end plate 10, and the gasket 7 and the locking nut 8 are sequentially sleeved and fastened under the prefabricated formwork end plate 10.

[0058] Embodiment 2:

[0059] This embodiment provides a method for loading and unloading the multifunctional auxiliary part of the machined full-grouting sleeve in the first embodiment.

[0060] The loading and unloading method includes an installation method and a disassembly method; Figure 1 to Figure 6As shown, at least one implementation of the installation method and the removal method is as follows:

[0061] The installation method is as follows: a positioning screw 6 is arranged in the sealing auxiliary component 4, so that the positioning screw 6 is located at the second end plug portion 403 of the sealing auxiliary component 4 and a part of the positioning screw 6 is exposed, and the sealing auxiliary component 4 is sleeved in the grouting sleeve 1 (such as Figure 1 As shown, the sealing auxiliary 4 is in a relaxed state at this time); the grouting sleeve 1 is placed on the prefabricated template end plate 10, and the gasket 7 and the locking nut 8 are inserted into the exposed part of the positioning screw 6 and locked. At this time, the sealing auxiliary 4 is in a compressed radial expansion and axial contraction state ( Figure 2 Then insert the steel bar 5 into the first end plug portion 402 of the sealing auxiliary member 4, and the positioning screw 6 and the steel bar 5 are automatically aligned and abutted (such as Figure 3 After the installation of the reinforcement is completed, grouting is performed on the outside of the grouting sleeve 1 to complete the casting of the entire prefabricated component.

[0062] It should be noted that before pouring the component, the grouting port 2 and the grouting port 3 are connected by PVC pipes, and the PVC pipes are led to the outside of the component to prevent the grout from entering the inside of the grouting sleeve 1 when the component is poured;

[0063] The positioning screw 6 can be pre-assembled in the sealing auxiliary component 4. Since the sealing auxiliary component 4 has a certain elastic deformation ability, the upper part of the positioning screw 6 together with the clamping retaining ring 9 can be inserted into the accommodating cavity 404 from the upper hole or the lower hole, and the lower end of the positioning screw 6 is exposed; since the inner hole diameter of the first end plug 402 is slightly smaller than the outer diameter of the clamping retaining ring 9, and the axial length of the first end plug 402 is shorter, the inner hole of the first end plug 402 can be slightly expanded, and the positioning screw 6 together with the clamping retaining ring 9 thereon can be inserted into the accommodating cavity 404. After relaxation, the first end plug 402 can return to its original state, and the other end of the positioning screw 6 can be passed through the second end plug 403.

[0064] The disassembly method is as follows: after the entire prefabricated component is cast and solidified, the locking nut 8 is loosened, and the locking nut 8 and the gasket 7 are removed from the bottom of the prefabricated component template end plate 10 in turn. After removing the prefabricated component template end plate 10, the positioning screw 6 is pulled toward the outside of the grouting sleeve 1. Under the action of the clamping retaining ring 9, the positioning screw 6 pulls the entire sealing auxiliary component 4 out of the grouting sleeve 1, thereby completing the disassembly and recovery of the sealing auxiliary component 4.

[0065] The assembly and disassembly method is simple and easy to operate. The sealing auxiliary component 4, the positioning screw 6, the locking nut 8, etc. can all be used for the next grouting sleeve installation, which can save a lot of manufacturing and installation costs.

[0066] 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 machined full grouting sleeve multifunctional accessory, comprising a grouting sleeve, wherein the grouting sleeve has a grouting port and a grouting discharge port, characterized in that: A sealing auxiliary is provided in the grouting sleeve, and the sealing auxiliary comprises a middle column, a first end plug and a second end plug which are arranged as an integral structure, and the first end plug, the second end plug and the middle column together form an internal accommodating cavity and an end platform; the first end plug is arranged at one end of the grouting port, and the steel bar passes through the first end plug and extends into the accommodating cavity; the second end plug is arranged at one end of the grouting port, one end of the positioning screw passes through the second end plug and abuts against the steel bar, and the other end is connected with a gasket and a locking nut, and the positioning screw is provided with a clamping ring at the end platform; the sealing auxiliary is a hollow cylindrical structure with the same outer diameter, the inner diameter of the middle column is respectively larger than the inner diameter of the first end plug and the inner diameter of the second end plug, and the axial length of the second end plug is larger than the axial length of the first end plug; the sealing auxiliary is a rubber part, a cloth-inserted rubber part or a plastic part; a substrate is also bonded to the outer contour of the sealing auxiliary.

2. The multifunctional auxiliary part of the machined full grouting sleeve according to claim 1, characterized in that: The inner hole of the first end plug is a continuous concave-convex structure, and the inner diameter of the convex part is smaller than the outer diameter of the steel bar; the entrance of the inner hole of the first end plug is in a bell-mouth shape.

3. The multifunctional auxiliary part of the machined full grouting sleeve according to claim 1, characterized in that: The grouting sleeve is a rolled full grouting sleeve, and the depth of the rolled groove of the grouting sleeve close to the first end plug is greater than the depth of the rolled groove of the remaining parts.

4. The multifunctional auxiliary part of the machined full grouting sleeve according to claim 1, characterized in that: The outer diameter of the sealing auxiliary component is smaller than the inner diameter of the grouting sleeve.

5. The multifunctional accessory of the machined full grouting sleeve according to claim 1, characterized in that: The diameter of the positioning screw is smaller than the inner diameter of the inner hole of the second end plug portion, and the diameter of the clamping retaining ring is larger than the inner diameter of the inner hole of the second end plug portion.

6. The multifunctional auxiliary part of the machined full grouting sleeve according to claim 1, characterized in that: In a non-compression state, the axial length of the sealing auxiliary component is longer than the length of the grouting sleeve; in a compression state, the two end surfaces of the sealing auxiliary component are flush with the two end surfaces of the grouting sleeve respectively.

7. The multifunctional machined full grouting sleeve accessory according to claim 1, characterized in that: The grouting sleeve is arranged and abutted on the end plate of the prefabricated template, one end of the positioning screw passes through the end plate of the prefabricated template, and the gasket and the locking nut are sequentially sleeved and fastened on the outer side of the end plate of the prefabricated template.

8. A method for assembling and disassembling a multifunctional auxiliary part of a machined full grouting sleeve as claimed in claim 1, characterized in that: The loading and unloading method includes an installation method and a disassembly method. The installation method is as follows: a positioning screw is arranged in the sealing auxiliary component, so that the positioning screw is located at the second end plug of the sealing auxiliary component and a part of the positioning screw is exposed, the sealing auxiliary component is sleeved in the grouting sleeve, the grouting sleeve is placed on the end plate of the prefabricated component template, a gasket and a locking nut are sleeved in the exposed part of the positioning screw and locked, at which time the sealing auxiliary component is in a compressed radial expansion and axial contraction state; a steel bar is then inserted into the first end plug of the sealing auxiliary component, and the steel bar will be automatically aligned and abutted with the positioning screw; after the installation of the steel bar is completed, grouting is performed on the outside of the grouting sleeve to complete the casting of the entire prefabricated component; The disassembly method is as follows: after the entire prefabricated component is cast and solidified, the locking nut is loosened, and the locking nut and the gasket are removed from the bottom of the prefabricated component template end plate in turn. After removing the prefabricated component template end plate, the positioning screw is pulled toward the outside of the grouting sleeve. Under the action of the clamping retaining ring, the positioning screw pulls the entire sealing auxiliary component out of the grouting sleeve, thereby completing the disassembly and recovery of the sealing auxiliary component.

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