Full grouting sleeve for steel bar connection

Abstract

The full grouting sleeve comprises an outer sleeve body, a mounting cavity is formed in the middle of the outer sleeve body in the axial direction, steel bar connecting holes are formed in the two ends of the outer sleeve body respectively, a grouting opening and a slurry discharging opening are formed in the side face of the outer sleeve body, and the steel bar connecting holes, the grouting opening and the slurry discharging opening are all communicated with the mounting cavity. A mounting cavity is formed in the outer cylinder, a plurality of anchoring protruding parts are arranged in the mounting cavity, sealing assemblies are arranged at the reinforcing steel bar connecting holes, each sealing assembly comprises an elastic sealing ring and a fastener used for fixing the elastic sealing ring, the fasteners are detachably connected with the outer cylinder, an inner hole used for being connected with reinforcing steel bars is formed in the middle of each elastic sealing ring, and the reinforcing steel bars are arranged in the inner holes. A limiter for limiting the insertion length of the reinforcing steel bar is arranged in the middle of the mounting cavity; the connecting structure has the advantages of simplicity and convenience in construction, high construction efficiency and stability in connection.

Description

Technical Field

[0001] The utility model belongs to the technical field of grouting sleeves, and particularly relates to a full grouting sleeve for steel bar connection. Background Art

[0002] An assembled building refers to a building in which a large amount of on-site operation work in the traditional construction method is transferred to a factory. Building components and fittings are processed and manufactured in the factory and transported to the building construction site, and then assembled and installed on-site through a reliable connection method.

[0003] A grouting sleeve, also known as a grouting sleeve joint or a sleeve grouting joint, is a commonly used steel bar connection tool in assembled construction.

[0004] A grouting sleeve is a combined body assembled by a specially processed sleeve, a supporting grouting material and steel bars. When connecting steel bars, a quick-hardening non-shrinking grouting material is injected, and the steel bars and the sleeve are connected by the bonding and biting action between the materials. The sleeve grouting joint has the advantages of reliable performance, wide applicability and simple installation.

[0005] The grouting sleeve connection technology is widely applicable to the fields of reinforced concrete structure engineering, steel structure engineering, bridge engineering, offshore oil exploitation platform engineering and offshore wind power tower. The grouting sleeve connection technology is a new type of steel structure connection method generated due to the needs of engineering practice and the development of technology. The emergence of this connection method makes up for the deficiencies of traditional steel structure connection methods (mainly including welding and bolt connection), and has been rapidly developed and applied.

[0006] The problems of the prior art are that when a grouting sleeve is used, a separate sealing structure is usually required to seal between the grouting sleeve and the steel bar, and then grouting is carried out. The on-site workload is large and the construction efficiency is low; when a full grouting sleeve is used, the insertion depth of the steel bar cannot be effectively controlled, affecting the connection stability between the steel bar and the concrete grouting material; when the steel bar is inserted into the grouting sleeve, the steel bar is easily deviated from the axis of the sleeve, resulting in uneven thickness of the concrete grouting material and affecting the connection stability. Summary of the Invention

[0007] The purpose of the utility model is to provide a full grouting sleeve for steel bar connection aiming at the problems existing in the prior art, which has the advantages of simple construction, high construction efficiency and stable connection.

[0008] To achieve the above object, the technical solution adopted by the utility model is as follows: a fully grouted sleeve for steel bar connection, including an outer cylinder body, an installation cavity is axially provided in the middle of the outer cylinder body, steel bar connection holes are respectively provided at both ends of the outer cylinder body, a grouting port and a slurry discharge port are provided on the side surface of the outer cylinder body, the steel bar connection holes, the grouting port and the slurry discharge port are all communicated with the installation cavity, a plurality of anchoring protrusion parts are arranged in the installation cavity, sealing components are arranged at the steel bar connection holes, the sealing components include elastic sealing rings and fasteners for fixing the elastic sealing rings, the fasteners are detachably connected to the outer cylinder body, an inner hole for connecting the steel bars is provided in the middle of the elastic sealing ring, and a stopper for limiting the insertion length of the steel bars is arranged in the middle of the installation cavity.

[0009] In the above solution, the connection and positioning of the ends of two steel bars are carried out through the steel bar connection holes. The grouting port and the slurry discharge port are used to complete the grouting work in the installation cavity, forming a concrete fixing layer between the ends of the steel bars to ensure the stability of the steel bar connection. The anchoring protrusion parts are provided to enhance the anchoring performance between the concrete fixing layer and the outer cylinder body, strengthening the axial connection stability. The sealing components at the steel bar connection holes are used to seal the gap between the steel bar connection holes and the steel bars after the steel bars are connected, facilitating the grouting to form a concrete fixing layer. The elastic sealing ring is fixed on the outer cylinder body through the detachable fasteners. The inner hole of the elastic sealing ring can be elastically deformed according to the size of the steel bar, and at the same time, the seal between the inner hole and the steel bar is ensured. The stopper is used to ensure the sufficient insertion length of the two ends of the steel bars, ensuring the effective connection between the steel bars and the concrete fixing layer.

[0010] Further, a circular connecting plate is provided at the steel bar connection hole, a threaded hole is provided at the circular connecting plate, and the fastener is screwed with the threaded hole.

[0011] The circular connecting plate is fixed to the side wall of the installation cavity and is screwed with the fastener through the threaded hole. A fixing hole corresponding to the threaded hole is provided on the elastic sealing ring for connecting the fastener.

[0012] Further, a circular connecting plate is provided at the steel bar connection hole, an internal thread is provided at the steel bar connection hole, the fastener includes a circular end cover screwed with the internal thread, and the elastic sealing ring is arranged between the circular end cover and the circular connecting plate

[0013] The circular end cover is screwed through the internal thread of the steel bar connection hole, and the elastic sealing ring is pressed and fixed at the circular connecting plate through the circular end cover. The inner hole sizes of the circular end cover and the circular connecting plate are both larger than the outer diameter size of the steel bar.

[0014] Further, the stopper includes a limiting plate or a limiting column, and the limiting plate or the limiting column is connected to the outer cylinder body.

[0015] The limiting plate or limiting post is connected to the side wall of the outer cylinder. The limiting plate or limiting post is arranged radially along the inner hole of the installation cavity to limit the insertion length of the end of the steel bar, and the structure is simple.

[0016] Furthermore, a positioner is arranged in the installation cavity. A guiding hole for cooperating with the steel bar is formed on the positioner, and the guiding hole is located at the axis of the installation cavity.

[0017] The end of the steel bar entering the outer cylinder is guided and positioned by the positioner, so that the steel bar is located in the middle of the outer cylinder, ensuring the uniform thickness of the concrete fixing layer outside the steel bar and ensuring the connection stability.

[0018] Furthermore, the anchoring convex part includes a rib plate structure distributed along the side wall of the installation cavity, and the cross section of the rib plate structure is rectangular.

[0019] The connection tightness between the concrete fixing layer and the outer cylinder is strengthened by arranging the rib plate structure along the side wall of the installation cavity. The cross section of the rib plate structure is rectangular, improving the axial limiting ability between the concrete fixing layer and the outer cylinder.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1. By arranging fasteners on the outer cylinder to position the elastic sealing ring, during use, the steel bar can be directly inserted into the inner hole of the steel bar sealing ring for sealed connection and grouting work, reducing the on-site sealing workload and improving the construction efficiency;

[0022] 2. The elastic sealing ring is fixed by the fasteners, with a simple structure, ensuring the connection stability between the elastic sealing ring and the outer cylinder, facilitating on-site steel bar connection and sealing work, and being easy to operate;

[0023] 3. The anchoring effect between the concrete fixing layer and the outer cylinder is strengthened by arranging an anchoring convex part in the installation cavity; the sufficient connection length between the steel bar and the outer sleeve is ensured by arranging a limiter, ensuring the connection stability; the steel bar is located at the axis of the installation cavity by the positioner, making the concrete fixing layer outside the steel bar evenly distributed and the connection stable. Description of the Drawings

[0024] Figure 1 It is a structural sectional view of a full grouting sleeve for steel bar connection according to Embodiment 1 of the present utility model;

[0025] Figure 2 It is a three-dimensional view of a full grouting sleeve for steel bar connection according to Embodiment 1 of the present utility model;

[0026] Figures 3 - 5 It is an optional structural schematic diagram of the anchoring convex part in Embodiment 1 of the present utility model;

[0027] Figure 6 This is the structural sectional view of a fully grouted sleeve for steel bar connection in Embodiment 2 of the present utility model;

[0028] Figure 7 This is the three-dimensional structure view of a fully grouted sleeve for steel bar connection in Embodiment 2 of the present utility model;

[0029] In the figure: 1. Outer cylinder; 2. Installation cavity; 3. Steel bar connection hole; 4. Grouting port; 5. Drainage port; 6. Anchoring protrusion; 7. Elastic sealing ring; 8. Fastener; 9. Limiter; 10. Annular connecting plate; 11. Threaded hole; 12. Annular end cover; 13. Guide hole; 14. Link; 15. Positioning sleeve. Specific embodiments

[0030] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work conditions belong to the scope of protection of the present utility model. In the description of the present utility model, it should be noted that the terms front, back, left, right, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship when the product of the present utility model is usually placed. It is only for the convenience of describing the present utility model or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0031] Embodiment 1

[0032] As Figures 1 - 5 shown, a fully grouted sleeve for steel bar connection includes an outer cylinder 1. An installation cavity 2 is axially provided in the middle of the outer cylinder 1. Steel bar connection holes 3 are respectively provided at both ends of the outer cylinder 1. A grouting port 4 and a drainage port 5 are provided on the side of the outer cylinder 1. The steel bar connection holes 3, the grouting port 4 and the drainage port 5 are all communicated with the installation cavity 2. A plurality of anchoring protrusions 6 are arranged in the installation cavity 2. Sealing assemblies are arranged at the steel bar connection holes 3. The sealing assemblies include elastic sealing rings 7 and fasteners 8 for fixing the elastic sealing rings 7. The fasteners 8 are detachably connected to the outer cylinder 1. An inner hole for connecting the steel bar is provided in the middle of the elastic sealing ring 7. A limiter 9 for limiting the insertion length of the steel bar is arranged in the middle of the installation cavity 2.

[0033] In the above solution, the connection and positioning of the ends of two steel bars are carried out through the steel bar connection holes 3. The grouting port 4 and the slurry discharge port 5 are used to complete the grouting work into the installation cavity 2, forming a concrete fixing layer between the ends of the steel bars to ensure the stability of the steel bar connection. The anchoring protrusion 6 is provided to strengthen the anchoring performance between the concrete fixing layer and the outer cylinder 1 and enhance the axial connection stability. The sealing component at the steel bar connection hole 3 is used to seal the gap between the steel bar connection hole 3 and the steel bar after the steel bars are connected, facilitating the grouting to form a concrete fixing layer. The elastic sealing ring 7 is fixed on the outer cylinder 1 through the detachable fastener 8. The inner hole of the elastic sealing ring 7 can be elastically deformed according to the size of the steel bar, while ensuring the seal between the inner hole and the steel bar. The stopper 9 is used to ensure sufficient insertion length of the two ends of the steel bars, ensuring an effective connection between the steel bars and the concrete fixing layer.

[0034] The directions of the grouting port 4 and the slurry discharge port 5 are perpendicular to the axis of the outer cylinder 1.

[0035] Further, a circular connecting plate 10 is provided at the steel bar connection hole 3. Threaded holes 11 are provided in the circular connecting plate 10, and the fastener 8 is screwed into the threaded holes 11.

[0036] The circular connecting plate 10 is fixed to the side wall of the installation cavity 2 and is screwed to the fastener 8 through the threaded holes 11. Fixing holes corresponding to the threaded holes 11 are provided on the elastic sealing ring 7 for connecting the fastener 8.

[0037] The fastener 8 includes a bolt, with a simple structure and convenient for installation and disassembly.

[0038] Further, the stopper 9 includes a limiting plate or a limiting column, and the limiting plate or the limiting column is connected to the outer cylinder 1.

[0039] The limiting plate or the limiting column is connected to the side wall of the outer cylinder 1. The limiting plate or the limiting column is arranged along the radial direction of the inner hole of the installation cavity 2 to limit the insertion length of the end of the steel bar, with a simple structure.

[0040] In the embodiment, the stopper 9 is a limiting column structure and is fixed to the inner side wall of the outer cylinder 1. Holes can also be opened on the side wall and connected by plugging or screwing.

[0041] Further, a positioner is arranged in the installation cavity 2. A guiding hole 13 for cooperating with the steel bar is provided on the positioner, and the guiding hole 13 is located at the axis of the installation cavity 2.

[0042] The positioner is used to guide and position the end of the steel bar entering the outer cylinder 1, so that the steel bar is located in the middle of the outer cylinder 1, ensuring uniform thickness of the concrete fixing layer outside the steel bar and ensuring connection stability.

[0043] The positioners are distributed on both sides of the stopper 9. The positioner includes a connecting rod 14 and a positioning sleeve 15. A guiding hole 13 is formed in the middle of the positioning sleeve 15.

[0044] Furthermore, the anchoring protrusion 6 includes a rib structure distributed along the side wall of the installation cavity 2, and the cross-section of the rib structure is rectangular.

[0045] By arranging the rib structure along the side wall of the installation cavity 2, the connection tightness between the concrete fixing layer and the outer cylinder 1 is strengthened. The cross-section of the rib structure is rectangular, which improves the axial limiting ability between the concrete fixing layer and the outer cylinder 1.

[0046] The rib structure can include various forms. For example Figure 3 , the rib structure includes a number of annular ribs arranged axially, Figure 4 In Figure 3 , on the basis of the annular ribs, it includes a number of rib units arranged discontinuously. Figure 5 In

[0047] Embodiment 2

[0048] For example Figures 6 - 7 As shown, a fully grouted sleeve for steel bar connection in this embodiment includes an outer cylinder 1. An installation cavity 2 is axially formed in the middle of the outer cylinder 1. Reinforcing bar connection holes 3 are respectively formed at both ends of the outer cylinder 1. A grouting port 4 and a slurry discharge port 5 are formed on the side surface of the outer cylinder 1. The reinforcing bar connection holes 3, the grouting port 4 and the slurry discharge port 5 are all communicated with the installation cavity 2. A number of anchoring protrusions 6 are arranged in the installation cavity 2. Sealing components are arranged at the reinforcing bar connection holes 3. The sealing component includes an elastic sealing ring 7 and a fastener 8 for fixing the elastic sealing ring 7. The fastener 8 is detachably connected to the outer cylinder 1. An inner hole for connecting the steel bar is formed in the middle of the elastic sealing ring 7. A stopper 9 for limiting the insertion length of the steel bar is arranged in the middle of the installation cavity 2.

[0049] In the above solution, the connection and positioning of the ends of two steel bars are carried out through the steel bar connection holes 3. The grouting ports 4 and the slurry discharge ports 5 are used to complete the grouting work into the installation cavity 2, forming a concrete fixing layer between the ends of the steel bars to ensure the stability of the steel bar connection. The anchoring convex part 6 is provided to strengthen the anchoring performance between the concrete fixing layer and the outer cylinder 1 and enhance the axial connection stability. The sealing component at the steel bar connection hole 3 is used to seal the gap between the steel bar connection hole 3 and the steel bar after the steel bars are connected, facilitating the formation of a concrete fixing layer by grouting. The elastic sealing ring 7 is fixed on the outer cylinder 1 through the detachable fastener 8. The inner hole of the elastic sealing ring 7 can be elastically deformed according to the size of the steel bar, while ensuring the seal between the inner hole and the steel bar. The stopper 9 is used to ensure sufficient insertion length of the two ends of the steel bars, ensuring the effective connection between the steel bars and the concrete fixing layer.

[0050] The directions of the grouting ports 4 and the slurry discharge ports 5 are perpendicular to the axis of the outer cylinder 1.

[0051] Furthermore, a circular connecting plate 10 is provided at the steel bar connection hole 3. The steel bar connection hole 3 is provided with internal threads. The fastener 8 includes a circular end cover 12 screwed to the internal threads. The elastic sealing ring 7 is arranged between the circular end cover 12 and the circular connecting plate 10.

[0052] The circular end cover 12 is screwed through the internal threads of the steel bar connection hole 3, and the elastic sealing ring 7 is pressed and fixed at the circular connecting plate 10 through the circular end cover 12. The inner hole sizes of the circular end cover 12 and the circular connecting plate 10 are both larger than the outer diameter size of the steel bar.

[0053] Furthermore, the stopper 9 includes a limiting plate or a limiting column, and the limiting plate or the limiting column is connected to the outer cylinder 1.

[0054] The limiting plate or the limiting column is connected to the side wall of the outer cylinder 1. The limiting plate or the limiting column is arranged radially along the inner hole of the installation cavity 2 to limit the insertion length of the end of the steel bar, and the structure is simple.

[0055] In the embodiment, the stopper 9 is a limiting column structure, fixed on the inner side wall of the outer cylinder 1, or holes can be opened on the side wall and connected by plugging or screwing.

[0056] Furthermore, a positioner is arranged in the installation cavity 2. The positioner is provided with a guiding hole 13 for cooperating with the steel bar, and the guiding hole 13 is located at the axis of the installation cavity 2.

[0057] The positioner is used to guide and position the end of the steel bar entering the outer cylinder 1, so that the steel bar is located in the middle of the outer cylinder 1, ensuring the uniform thickness of the concrete fixing layer outside the steel bar and ensuring the connection stability.

[0058] The positioners are distributed on both sides of the stopper 9. The positioner includes a connecting rod 14 and a positioning sleeve 15. A guiding hole 13 is formed in the middle of the positioning sleeve 15.

[0059] Furthermore, the anchoring protrusion 6 includes a rib structure distributed along the side wall of the installation cavity 2, and the cross-section of the rib structure is rectangular.

[0060] By arranging the rib structure along the side wall of the installation cavity 2, the connection tightness between the concrete fixing layer and the outer cylinder 1 is strengthened. The cross-section of the rib structure is rectangular, which improves the axial limiting ability between the concrete fixing layer and the outer cylinder 1.

[0061] The rib structure can include various forms. For example Figure 3 , the rib structure includes a number of annular ribs arranged axially, Figure 4 In Figure 3 , on the basis of Figure 5 , the rib structure is arranged along a spiral line, which is convenient for the grouting material to flow upward and avoids generating bubbles.

[0062] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully grouting sleeve for steel bar connection, characterized in that: The invention comprises an outer cylinder, wherein an installation cavity is axially provided in the middle of the outer cylinder, steel bar connecting holes are respectively provided at both ends of the outer cylinder, a grouting port and a grouting port are provided on the side of the outer cylinder, the steel bar connecting hole, the grouting port and the grouting port are all communicated with the installation cavity, a plurality of anchoring protrusions are arranged in the installation cavity, a sealing assembly is arranged at each of the steel bar connecting holes, the sealing assembly comprises an elastic sealing ring and a fastener for fixing the elastic sealing ring, the fastener is detachably connected to the outer cylinder, an inner hole for connecting steel bars is provided in the middle of the elastic sealing ring, a limiter for limiting the insertion length of steel bars is provided in the middle of the installation cavity, a positioner is arranged in the installation cavity, the positioners are distributed on both sides of the limiter, the positioner comprises a connecting rod and a positioning sleeve, a guide hole for cooperating with the steel bars is provided on the positioning sleeve, and the guide hole is located at the axis of the installation cavity.

2. The full grouting sleeve for steel bar connection according to claim 1, characterized in that: An annular connecting plate is arranged at the steel bar connecting hole, a threaded hole is opened at the annular connecting plate, and the fastener is screwed to the threaded hole.

3. The full grouting sleeve for steel bar connection according to claim 2, characterized in that: The steel bar connection hole is provided with an internal thread, the fastener comprises an annular end cover threadedly connected to the internal thread, and the elastic sealing ring is arranged between the annular end cover and the annular connection plate.

4. The full grouting sleeve for steel bar connection according to claim 1, characterized in that: The limiter comprises a limit plate or a limit column, and the limit plate or the limit column is connected to the outer cylinder.

5. The full grouting sleeve for steel bar connection according to claim 1, characterized in that: The anchoring protrusion comprises a rib structure distributed along the side wall of the installation cavity, and the cross section of the rib structure is rectangular.

Images