Grouting sleeve and prefabricated part connecting structure

Abstract

The utility model discloses a grouting sleeve and a prefabricated part connecting structure, the grouting sleeve comprises a hollow sleeve body, one end of the hollow sleeve body is provided with an opening, the other end of the hollow sleeve body is provided with a horn mouth, and the sleeve body is provided with a grout overflow hole and a grouting hole; the limiting piece is fixed in the sleeve body and located between the grout overflow hole and the grouting hole; the guide piece is fixed in the sleeve body and located at the end, close to the horn mouth, of the limiting piece, the guide piece comprises a plurality of positioning edge sets arranged in the circumferential direction of the sleeve body at intervals, and the positioning edge sets are obliquely arranged relative to the inner wall of the sleeve body; and the inclination direction of the positioning ridge group is the same as that of the horn mouth. According to the utility model, the horn mouth is arranged at the bottom of the sleeve body, so that an inclined reinforcing steel bar can enter the sleeve body more smoothly, and then the inclined reinforcing steel bar is vertically corrected in the process of being inserted into the sleeve body through the guide piece, so that the mounting efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, and further relates to a grouting sleeve and a prefabricated component connection structure. Background Art

[0002] At present, with the in-depth promotion of the process of building industrialization, the prefabricated structure of reinforced grouting material is becoming more and more popular, and the prefabricated connection of grouting material prefabricated components has become the core technology of prefabricated housing. The steel sleeve grouting connection technology is the core technology for the connection of steel bar nodes between components of the prefabricated grouting material structure system, and is the key to the design, production and construction of assembled integral structures. The grouting sleeve for steel bar connection is the main component for connecting prefabricated components in prefabricated housing, and its structural performance and use effect are crucial. The grouting sleeve connection method refers to the steel bar joints between prefabricated components are respectively inserted into the two ends of the grouting sleeve and the grouting material is injected into the grouting sleeve. The mechanical bite and friction between the grouting material and the steel bar and the grouting sleeve are used to achieve the connection of components.

[0003] However, at the construction site, due to dimensional deviations in prefabricated components and construction quality, the steel bars in the actual lower components will be tilted, and there will be deviations from the reserved sleeve holes in the upper components, making installation difficult and greatly reducing installation efficiency.

[0004] Therefore, it is necessary to design a grouting sleeve and a prefabricated component connection structure to solve the above problems. Summary of the invention

[0005] In response to the above technical problems, the purpose of the utility model is to provide a grouting sleeve and a prefabricated component connection structure. By setting a bell mouth at the bottom of the sleeve body, the inclined steel bars can enter the interior of the sleeve body more smoothly, and then the inclined steel bars can be vertically corrected during the insertion into the sleeve body through a guide member, which can effectively improve the installation efficiency.

[0006] In order to achieve the above object, the utility model provides a grouting sleeve, comprising:

[0007] A hollow sleeve body, wherein one end of the sleeve body is provided with an opening, the other end of the sleeve body is provided with a bell mouth, a grouting hole is provided on the side of the sleeve body close to the opening end, and a grouting hole is provided on the side of the sleeve body close to the bell mouth end;

[0008] A stopper, fixed inside the sleeve body and located between the overflow hole and the grouting hole, the stopper being provided with a hollow portion for the grouting material to pass through;

[0009] The guide member is fixed inside the sleeve body and is located at one end of the limit member close to the bell mouth. The guide member includes a plurality of positioning rib groups arranged at intervals along the circumference of the sleeve body. The positioning rib groups are inclined to the inner wall of the sleeve body. The inclination direction of the positioning rib groups is the same as the inclination direction of the bell mouth. The plurality of positioning rib groups are arranged to form a guide space for inserting the steel bars of the lower component.

[0010] In some embodiments, the positioning rib group includes a plurality of positioning ribs arranged in parallel and at intervals, and one end of each of the positioning ribs is fixedly connected to the inner wall of the sleeve body.

[0011] In some embodiments, the angle between the positioning edge and the axial direction of the sleeve body is 30°-60°.

[0012] In some embodiments, a plurality of the positioning edges are arranged at equal intervals, and an angle between the positioning edges and the axial direction of the sleeve body is 45°.

[0013] In some embodiments, four positioning edge groups are provided, and the four positioning edge groups are symmetrically distributed in a cross shape.

[0014] In some embodiments, the sleeve body and the bell mouth are integrally formed, and an angle between the axial cross-sections of the sleeve body and the bell mouth is 60°-75°.

[0015] In some embodiments, the limiting member includes four limiting plates, which are respectively fixed on the inner wall of the sleeve body, and the four limiting plates are symmetrically distributed in a cross shape and located on the same plane. There is a gap between any two of the limiting plates to form a hollow portion for the grouting material to pass through.

[0016] According to another aspect of the present invention, the present invention further provides a prefabricated component connection structure, comprising any one of the grouting sleeves described above, and further comprising:

[0017] An upper prefabricated component, wherein the grouting sleeve is arranged in the upper prefabricated component, and an upper component steel bar is arranged in the upper prefabricated component, and the upper component steel bar is inserted into the sleeve body through the opening;

[0018] A lower layer prefabricated component, the top of which is provided with lower layer component steel bars, and the lower layer component steel bars are inserted into the sleeve body through the bell mouth.

[0019] In some embodiments, it further comprises:

[0020] A sealing ring is sleeved on the steel bars of the upper component and is located at the opening.

[0021] In some embodiments, it further comprises:

[0022] Grouting material, the upper prefabricated component is provided with a grout inlet and an air outlet, the grout inlet is connected with the grouting hole, the air outlet is connected with the overflow hole, the grouting material is used to enter the interior of the sleeve body through the grout inlet and the grouting hole, and overflow through the overflow hole and the air outlet after filling the sleeve body.

[0023] Compared with the prior art, the grouting sleeve and prefabricated component connection structure provided by the utility model have the following beneficial effects:

[0024] 1. The grouting sleeve provided by the utility model has a bell mouth at the bottom of the sleeve body, so that the inclined steel bar can enter the sleeve body more smoothly; and the guide piece is used to vertically correct the inclined steel bar during the insertion into the sleeve body, which can effectively improve the installation efficiency;

[0025] 2. The grouting sleeve provided by the utility model has a guide piece arranged as a plurality of positioning edges arranged along the four directions of the sleeve body. The positioning edges are at 45 degrees to the inner wall of the sleeve. When the steel bars are inserted, the positioning edges guide the steel bars to be positioned at the center of the sleeve body structure, so that the inclined steel bars can be vertically corrected during the insertion of the sleeve. The whole process is to forcibly correct the inclined steel bars through the gravity of the upper component itself, so that the installation of the upper and lower prefabricated components is simpler and faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0027] Figure 1 This is a structural schematic diagram of a prefabricated component connection structure of a specific embodiment;

[0028] Figure 2 It is a structural schematic diagram of a prefabricated component connection structure when the lower steel bars are inclined in a specific embodiment;

[0029] Figure 3 It is a structural schematic diagram of a grouting sleeve of a preferred embodiment of the utility model;

[0030] Figure 4 It is a cross-sectional view of a grouting sleeve of a preferred embodiment of the utility model;

[0031] Figure 5 It is a structural schematic diagram of a prefabricated component connection structure of another preferred embodiment of the utility model.

[0032] Description of Figure Numbers:

[0033] Sleeve body 1, opening 11, bell mouth 12, overflow hole 13, grouting hole 14, limit member 2, limit plate 21, guide member 3, positioning edge group 31, positioning edge 311, upper prefabricated component 4, upper component steel bar 41, sealing ring 411, slurry inlet 42, first rubber plug 421, air outlet 43, second rubber plug 431, lower prefabricated component 5, lower component steel bar 51, grouting material 6. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0035] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0036] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0037] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0038] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0039] Prefabricated buildings are a new type of construction method in modern buildings. With the development of prefabricated buildings, more and more buildings adopt prefabricated methods. The connection between prefabricated components is usually connected by grouting sleeves, and a reliable connection is achieved by pouring grouting material inside the sleeves.

[0040] Reference Manual Attached Figure 1 , Figure 2 The upper prefabricated component 4 is connected to the lower prefabricated component 5 through a grouting sleeve, wherein the grouting sleeve is arranged in the upper prefabricated component 4, and the upper prefabricated component 4 is provided with an upper component steel bar 41, which is inserted into the sleeve body 1 through the upper end opening, and the upper component steel bar 41 is sleeved with a sealing ring 411, which is located at the upper end opening. The lower prefabricated component 5 is provided with a lower component steel bar 51 on the top, and the lower component steel bar 51 is inserted into the sleeve body 1 through the lower end opening. The upper prefabricated component 4 is provided with a slurry inlet 42 and an air outlet 43. The slurry inlet 42 is connected to the grouting hole 14, and the air outlet 43 is connected to the overflow hole 13. The grouting material 6 enters the interior of the sleeve body 1 through the slurry inlet 42 and the grouting hole 14, and overflows through the overflow hole 13 and the air outlet 43 after filling the sleeve body 1. The slurry inlet 42 is blocked by a first rubber plug 421, and the air outlet 43 is blocked by a second rubber plug 431, so as to realize the connection between the upper prefabricated component 4 and the lower prefabricated component 5.

[0041] In an ideal situation, if Figure 1 As shown, the lower component steel bar 51 is in a vertical state, and can be easily and quickly inserted into the grouting sleeve. The upper component steel bar 41 and the lower component steel bar 51 are in a straight line in the sleeve. Through the pouring of the grouting material 6, the upper prefabricated component 4 and the lower prefabricated component 5 are formed into a whole, reaching the same level as cast-in-place.

[0042] However, in actual construction, Figure 2 As shown, the steel bars 51 of the lower components are mostly not completely vertical, but tilted. When the upper prefabricated components 4 are spliced ​​up, the steel bars 51 of the lower components cannot eliminate the tilt, causing a potential stress hazard in the prefabricated component building.

[0043] In order to solve the above problem, in one embodiment, the reference specification Figures 3 to 5 The utility model provides a grouting sleeve, comprising: a hollow sleeve body 1, an opening 11 is provided at one end of the sleeve body 1, a bell mouth 12 is provided at the other end of the sleeve body 1, a grouting hole 13 is provided at the side of the sleeve body 1 near the opening 11, and a grouting hole 14 is provided at the side of the sleeve body 1 near the bell mouth 12; a stopper 2 is fixed inside the sleeve body 1 and located between the grouting hole 13 and the grouting hole 14, and a hollow portion for grouting material 6 to pass through is provided on the stopper 2; a guide member 3 is fixed inside the sleeve body 1 and located at one end of the stopper 2 near the bell mouth 12, and the guide member 3 includes a plurality of positioning rib groups 31 arranged at intervals along the circumferential direction of the sleeve body, the positioning rib group 31 is arranged obliquely with the inner wall of the sleeve body 1, and the inclination direction of the positioning rib group 31 is the same as the inclination direction of the bell mouth 12, and a plurality of positioning rib groups 31 are arranged to form a guide space for inserting steel bars of the lower layer component.

[0044] In this embodiment, a bell mouth 12 is provided at the bottom of the sleeve body 1 so that the inclined steel bars can enter the sleeve body 1 more smoothly; and the guide member 3 is used to vertically correct the inclined steel bars during the insertion into the sleeve body 1, which can effectively improve the installation efficiency.

[0045] In one embodiment, the reference specification Figure 3 , Figure 4 The positioning rib group 31 includes a plurality of positioning ribs 311 arranged in parallel and spaced apart, and one end of each positioning rib 311 is fixedly connected to the inner wall of the sleeve body 1. There are four positioning rib groups 31, and the four positioning rib groups 31 are symmetrically distributed in a cross shape. Of course, there can also be three, five or more positioning rib groups 31. The angle between the positioning rib 311 and the axial direction of the sleeve body 1 is 30°-60°. For example, the angle between the positioning rib 311 and the axial direction of the sleeve body 1 is 35°, 40°, 45°, 50°, 55°, etc. Of course, it can also be other angles, which can be set according to actual needs.

[0046] Further, a plurality of positioning edges 311 are arranged at equal intervals, and the angle between the positioning edges 311 and the axial direction of the sleeve body 1 is 45°. The sleeve body 1 and the bell mouth 12 are integrally formed, and the angle between the axial cross-sections of the sleeve body 1 and the bell mouth 12 is 60°-75°. For example, the angle between the axial cross-sections of the sleeve body 1 and the bell mouth 12 is 65°, 70°, etc. Of course, it can also be other angles, which can be set according to actual needs.

[0047] Furthermore, the stopper 2 includes four stoppers 21, which are respectively fixed on the inner wall of the sleeve body 1, and the four stoppers 21 are symmetrically distributed in a cross shape and located on the same plane. There is a gap between any two stoppers 21 to form a hollow portion for the grouting material 6 to pass through. The stopper 2 can prevent the upper and lower steel bars from contacting each other. After the grouting material is injected, the grouting material flows into the gap of the stopper 2. After the grouting material solidifies, the tensile strength of the entire grouting sleeve structure can be improved.

[0048] In this embodiment, the guide member 3 is configured as a plurality of positioning edges 311 arranged along four directions of the sleeve body 1, the positioning edges 311 are at 45° to the inner wall of the sleeve body 1, and the positioning edges 311 guide the steel bars to be positioned at the center of the sleeve body 1 structure when the steel bars are inserted, so that the inclined steel bars can be vertically corrected during the insertion process of the sleeve. The entire process is to forcibly correct the inclined steel bars through the gravity of the upper component itself, making the installation of the upper and lower prefabricated components simpler and faster.

[0049] According to another aspect of the present invention, the reference specification Figure 5The utility model further provides a prefabricated component connection structure, including any one of the above-mentioned grouting sleeves, and also including: an upper prefabricated component 4 and a lower prefabricated component 5, the grouting sleeve is arranged in the upper prefabricated component 4, the upper prefabricated component 4 is provided with an upper component steel bar 41, and the upper component steel bar 41 is inserted into the sleeve body 1 through the opening 11. The top of the lower prefabricated component 5 is provided with a lower component steel bar 51, and the lower component steel bar 51 is inserted into the sleeve body 1 through the bell mouth 12.

[0050] In this embodiment, the prefabricated component connection structure adopts a grouting sleeve to realize the connection between the upper prefabricated component 4 and the lower prefabricated component 5. By setting a bell mouth 12 at the bottom of the sleeve body 1, the inclined steel bars can enter the sleeve body 1 more smoothly; and then the inclined steel bars are vertically corrected during the insertion of the sleeve body 1 through the guide member 3. During the downward placement of the upper prefabricated component 4 during construction, the inclined steel bars 51 of the lower component can be automatically verticalized by gravity, so that the two steel bars in the grouting sleeve are kept on the same axis, thereby ensuring the tensile strength of the grouting sleeve structure and effectively improving the installation efficiency.

[0051] Furthermore, the prefabricated component connection structure further includes: a sealing ring 411 and grouting material 6, wherein the sealing ring 411 is sleeved on the upper component reinforcement 41 and is located at the opening 11. The sealing ring 411 can effectively prevent the grouting material 6 from overflowing.

[0052] The upper prefabricated component 4 is provided with a grout inlet 42 and an air outlet 43. The grout inlet 42 is connected to the grouting hole 14, and the air outlet 43 is connected to the overflow hole 13. The grouting material 6 enters the interior of the sleeve body 1 through the grouting inlet 42 and the grouting hole 14. A small amount of grouting material 6 and excess water will overflow from the overflow hole 13 and the air outlet 43 until the grouting material 6 fills the inner cavity of the sleeve body 1.

[0053] When producing the upper prefabricated component 4, the upper component steel bar 41 is inserted into the open end of the sleeve body 1 until the upper component steel bar 41 abuts against the limiter 2, and then the whole is put into the mold to cast concrete to produce the upper prefabricated component 4; during on-site construction and installation, the bell mouth 12 of the grouting sleeve in the upper prefabricated component 4 is sleeved on the lower component steel bar 51 of the lower prefabricated component 5, and under the guidance of the bell mouth 12 and the guide member 3, the lower component steel bar 51, which is tilted, can be automatically verticalized by gravity, so that the two steel bars in the grouting sleeve are kept on the same axis; finally, high-strength grouting material is injected into the cavity of the grouting sleeve from the grouting port 42 and the grouting hole 14 until the grouting material overflows from the overflow hole 13 and the air outlet 43, and the grouting port 42 and the air outlet 43 are blocked. At this time, the inside of the grouting sleeve is already filled with high-strength grouting material.

[0054] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0055] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A grouting sleeve, characterized in that: include: A hollow sleeve body, wherein one end of the sleeve body is provided with an opening, the other end of the sleeve body is provided with a bell mouth, a grouting hole is provided on the side of the sleeve body close to the opening end, and a grouting hole is provided on the side of the sleeve body close to the bell mouth end; A stopper, fixed inside the sleeve body and located between the overflow hole and the grouting hole, the stopper being provided with a hollow portion for the grouting material to pass through; The guide member is fixed inside the sleeve body and is located at one end of the limit member close to the bell mouth. The guide member includes a plurality of positioning rib groups arranged at intervals along the circumference of the sleeve body. The positioning rib groups are inclined to the inner wall of the sleeve body. The inclination direction of the positioning rib groups is the same as the inclination direction of the bell mouth. The plurality of positioning rib groups are arranged to form a guide space for inserting the steel bars of the lower component.

2. The grouting sleeve according to claim 1, characterized in that: The positioning rib group includes a plurality of positioning ribs arranged in parallel and at intervals, and one end of each positioning rib is fixedly connected to the inner wall of the sleeve body.

3. The grouting sleeve according to claim 2, characterized in that: The angle between the positioning edge and the axial direction of the sleeve body is 30°-60°.

4. The grouting sleeve according to claim 3, characterized in that: A plurality of positioning edges are arranged at equal intervals, and an angle between the positioning edges and the axial direction of the sleeve body is 45°.

5. The grouting sleeve according to claim 2, characterized in that: There are four positioning edge groups, and the four positioning edge groups are symmetrically distributed in a cross shape.

6. The grouting sleeve according to claim 1, characterized in that: The sleeve body and the bell mouth are integrally formed, and an angle between the axial cross sections of the sleeve body and the bell mouth is 60°-75°.

7. The grouting sleeve according to claim 1, characterized in that: The limiting member includes four limiting plates, which are respectively fixed on the inner wall of the sleeve body, are symmetrically distributed in a cross shape, and are located on the same plane. There is a gap between any two limiting plates to form a hollow portion for the grouting material to pass through.

8. A prefabricated component connection structure, characterized in that: The grouting sleeve comprises any one of claims 1 to 7, further comprising: An upper prefabricated component, wherein the grouting sleeve is arranged in the upper prefabricated component, and an upper component steel bar is arranged in the upper prefabricated component, and the upper component steel bar is inserted into the sleeve body through the opening; A lower layer prefabricated component, the top of which is provided with lower layer component steel bars, and the lower layer component steel bars are inserted into the sleeve body through the bell mouth.

9. The prefabricated component connection structure according to claim 8, characterized in that: Also includes: A sealing ring is sleeved on the steel bars of the upper component and is located at the opening.

10. The prefabricated component connection structure according to claim 9, characterized in that: Also includes: Grouting material, the upper prefabricated component is provided with a grout inlet and an air outlet, the grout inlet is connected with the grouting hole, the air outlet is connected with the overflow hole, the grouting material is used to enter the interior of the sleeve body through the grout inlet and the grouting hole, and overflow through the overflow hole and the air outlet after filling the sleeve body.

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