A sleeve for connecting high-strength hot-rolled ribbed steel bars

Abstract

The utility model discloses a sleeve for connecting high-strength hot-rolled ribbed steel bars, which relates to the technical field of hot-rolled ribbed steel bar assembly, and comprises an upper connecting sleeve and a lower connecting sleeve, wherein the upper connecting sleeve is provided with an upper connecting sleeve in the center, and the bottom of the upper connecting sleeve is connected with a lower connecting sleeve, and the lower connecting sleeve is provided in the center of the lower connecting sleeve. The sleeve for connecting high-strength hot-rolled ribbed steel bars can realize the fast assembly of the upper connecting sleeve and the lower connecting sleeve by combining the upper connecting sleeve with the lower connecting sleeve, and provide a margin space for thermal expansion and contraction for the butted rebars, and at the same time, the upper connecting sleeve and the lower connecting sleeve with the inserted rebars can be fastened by using a fastening nut, and the upper positioning groove and the lower positioning groove can be fastened and inserted in conjunction with the surface structure of the rebars to ensure the stability of the connection, and the anti-rust grease can prevent the internal rust of the structure from being placed in the butt joint, resulting in a reduction in structural strength.

Description

Technical Field

[0001] The utility model relates to the technical field of hot-rolled ribbed steel bar assembly, in particular to a sleeve for connecting high-strength hot-rolled ribbed steel bars. Background Art

[0002] Hot-rolled ribbed steel bars are also called threaded steel bars. In the construction industry, all kinds of building facilities above ground, underground and even underwater generally require the use of reinforced concrete, and reinforced concrete cannot do without the aforementioned threaded steel bars. Before pouring concrete, a steel skeleton needs to be constructed. When constructing the skeleton, the steel bars at both ends need to be connected according to the length of use, so a connecting sleeve will be used to connect them structurally to ensure the structural strength and stability of the steel skeleton.

[0003] Under normal circumstances, traditional rebars are connected by welding to weld the two rebars to be butt-jointed together at the ends. However, since welding equipment requires power supply, cables and other equipment, it has certain restrictions on the construction environment, resulting in more troublesome power supply and cable laying in different construction scenarios, adding more operation steps. At the same time, welding requires professionals to operate, and welding operations are relatively time-consuming and labor-intensive, which has a certain degree of negative impact on the operators themselves, disrupting the progress of the project.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a sleeve for connecting high-strength hot-rolled ribbed steel bars is proposed. Utility Model Content

[0005] The utility model aims to provide a sleeve for connecting high-strength hot-rolled ribbed steel bars to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sleeve for connecting high-strength hot-rolled ribbed steel bars, comprising an upper connecting sleeve and a lower connecting sleeve, wherein an upper connecting sleeve is arranged in the center of the upper connecting sleeve, and the bottom of the upper connecting sleeve is connected to the lower connecting sleeve, the lower connecting sleeve is arranged in the center of the lower connecting sleeve, and fastening nuts are symmetrically threadedly installed at both ends of the upper connecting sleeve and the lower connecting sleeve, the lower connecting sleeve comprises a lower measuring cylinder, a connecting block and a connecting bolt, the connecting blocks are symmetrically arranged on both sides of the inner wall of the lower measuring cylinder, and the connecting bolts are vertically and equidistantly arranged on the top surface of the connecting block.

[0007] Furthermore, the upper connecting sleeve includes an upper cylinder, an upper external thread, an upper bolt and an upper positioning pattern. The outer surface of the upper cylinder is provided with an upper external thread, and an upper bolt is vertically threadedly installed at one end of the upper cylinder away from the upper docking cylinder, and the inner wall surface of the upper cylinder is provided with an upper positioning pattern.

[0008] Furthermore, the upper docking tube comprises an upper measuring tube, a connecting block and docking holes. The connecting blocks are symmetrically installed on both sides of the inner wall of the upper measuring tube, and the connecting blocks are provided with docking holes arranged equidistantly inside.

[0009] Furthermore, the inner surface structure of the docking hole matches the outer surface structure of the docking bolt, and the diameter of the upper docking tube after docking with the lower docking tube is larger than the diameter of the upper connecting sleeve after docking with the lower connecting sleeve.

[0010] Furthermore, the lower connecting sleeve includes a lower cylinder, a lower external thread, a lower bolt and a lower positioning pattern. The outer surface of the lower cylinder is provided with a lower external thread, and the lower bolt is threadedly installed on one end of the lower cylinder away from the lower docking sleeve, and the inner wall surface of the lower cylinder is provided with a lower positioning pattern and an upper positioning pattern.

[0011] Furthermore, the lower external thread and the upper external thread have combined docking properties, and the lower positioning pattern and the upper positioning pattern have combined docking properties.

[0012] Furthermore, threaded steel bars are inserted inside the upper connecting sleeve and the lower connecting sleeve, and anti-rust grease is applied to the joints between the threaded steel bars and the upper connecting sleeve and the lower connecting sleeve.

[0013] Furthermore, the surface structures of the lower positioning pattern and the upper positioning pattern match the surface structure of the threaded steel bar, the upper connecting sleeve and the upper docking sleeve are an integral structure, and the lower connecting sleeve and the lower docking sleeve are an integral structure.

[0014] The utility model provides a sleeve for connecting high-strength hot-rolled ribbed steel bars, which has the following beneficial effects:

[0015] 1. The utility model, by respectively arranging the upper docking sleeve and the lower docking sleeve in the center of the upper connecting sleeve and the lower connecting sleeve, facilitates the insertion of the docking bolts vertically arranged on the surface of the docking block into the interior of the connecting block with the docking hole provided therein, so that the upper remaining measuring cylinder and the lower remaining measuring cylinder can be quickly docked and fixed, which is convenient for the subsequent tightening and adjustment of the fastening nut with the upper bolt and the lower bolt. By utilizing the above structure, the docking combination of the threaded steel bars using the entire sleeve structure can be effectively improved, the installation convenience of the structure can be improved, and the working efficiency can be improved. At the same time, the structural use of the upper docking sleeve and the lower docking sleeve can effectively provide the threaded steel bars of the docking combination with sufficient surplus space for thermal expansion and contraction after connection, and prevents the structural deformation caused by thermal expansion and contraction after the docking is too tight, thereby causing damage to the entire building structure.

[0016] 2. The utility model provides upper and lower positioning grooves on the inner walls of the upper cylinder and the lower cylinder, so that the threaded steel can be fixed with the upper and lower positioning grooves by using the grooves on its surface, thereby ensuring that after the threaded steel is inserted into the upper connecting sleeve and the lower connecting sleeve, it can maintain sufficient structural stability to prevent the threaded steel from loosening and sliding inside the upper connecting sleeve and the lower connecting sleeve, thereby affecting the connection quality. In addition, by combining the upper bolt and the lower bolt, they are screwed in vertically and can be limited and tightened from the upper and lower sides respectively, so that the threaded steel inserted into the upper connecting sleeve and the lower connecting sleeve can be structurally fixed to the greatest extent, thereby further improving the stability of the entire connection structure.

[0017] 3. The utility model also applies anti-rust grease to the joints between the threaded steel and the upper connecting sleeve and the lower connecting sleeve. The anti-rust grease can prevent rust and lubricate the surfaces of the metal parts at the joints to protect them from oxidation and corrosion, extend their service life, and make them easier to disassemble. Since the anti-rust grease usually contains special additives, it can form a protective film covering the metal surface to prevent the metal from contacting with oxygen and water in the air, thereby slowing down or preventing the occurrence of corrosion, and thus effectively improving the service life and stability of the entire connecting sleeve structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the side view of the main body of a sleeve for connecting high-strength hot-rolled ribbed steel bars of the utility model;

[0019] Figure 2 It is a schematic diagram of the side cross-sectional structure of an upper connecting sleeve and a lower connecting sleeve of a sleeve for connecting high-strength hot-rolled ribbed steel bars of the utility model;

[0020] Figure 3 It is a schematic diagram of the side cross-sectional structure of an upper butt joint sleeve and a lower butt joint sleeve of a sleeve for connecting high-strength hot-rolled ribbed steel bars of the utility model;

[0021] Figure 4 The utility model is a schematic diagram of the three-dimensional structure of an upper butt joint sleeve and a lower butt joint sleeve of a sleeve for connecting high-strength hot-rolled ribbed steel bars.

[0022] In the figure: 1. upper connecting sleeve; 101. upper cylinder; 102. upper external thread; 103. upper bolt; 104. upper positioning pattern; 2. upper docking sleeve; 201. upper measuring cylinder; 202. connecting block; 203. docking hole; 3. lower connecting sleeve; 301. lower cylinder; 302. lower external thread; 303. lower bolt; 304. lower positioning pattern; 4. lower docking sleeve; 401. lower measuring cylinder; 402. docking block; 403. docking bolt; 5. fastening nut; 6. threaded steel; 7. anti-rust grease. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] like Figures 1 to 4 As shown, a sleeve for connecting high-strength hot-rolled ribbed steel bars comprises an upper connecting sleeve 1 and a lower connecting sleeve 4, an upper connecting sleeve 2 is arranged in the center of the upper connecting sleeve 1, and the bottom of the upper connecting sleeve 1 is connected to the lower connecting sleeve 3, the lower connecting sleeve 4 is arranged in the center of the lower connecting sleeve 4, and fastening nuts 5 are symmetrically installed with threads at both ends of the upper connecting sleeve 2 and the lower connecting sleeve 4, the lower connecting sleeve 4 comprises a lower measuring cylinder 401, a connecting block 402 and a connecting bolt 403, the inner wall of the lower measuring cylinder 401 is symmetrically provided with connecting blocks 402, and the top surface of the connecting block 402 is vertically and equidistantly arranged with connecting bolts 403, the upper connecting cylinder 2 comprises an upper measuring cylinder 201, a connecting block 202 and a connecting hole 203, the inner wall of the upper measuring cylinder 201 is symmetrically arranged with connecting blocks 402 and connecting holes 203, A connecting block 202 is provided, and connecting block 202 has docking holes 203 arranged equidistantly inside. The inner surface structure of the docking holes 203 matches the outer surface structure of the docking bolts 403. The diameter of the upper docking tube 2 and the lower docking tube 4 after docking is larger than the diameter of the upper connecting sleeve 1 and the lower connecting sleeve 3 after docking. The upper docking tube 2 and the lower docking tube 4 are respectively arranged in the center of the upper connecting sleeve 1 and the lower connecting sleeve 3, which facilitates the docking bolts 403 vertically arranged on the surface of the docking block 402 to be inserted into the connecting block 202 with the docking holes 203, so that the upper measuring tube 201 and the lower measuring tube 401 can be quickly docked and fixed, which is convenient for the subsequent tightening and adjustment of the fastening nut 5 and the upper bolt 103 and the lower bolt 303.

[0025] The upper connecting sleeve 1 includes an upper cylinder 101, an upper external thread 102, an upper bolt 103 and an upper positioning pattern 104. The outer surface of the upper cylinder 101 is provided with an upper external thread 102, and the upper bolt 103 is vertically threadedly installed on the end of the upper cylinder 101 away from the upper docking cylinder 2, and the upper positioning pattern 104 is provided on the inner wall surface of the upper cylinder 101. The lower connecting sleeve 3 includes a lower cylinder 301, a lower external thread 302, a lower bolt 303 and a lower positioning pattern 304. The outer surface of the lower cylinder 301 is provided with a lower external thread 302, and the lower end of the lower cylinder 301 away from the lower docking cylinder 4 is threadedly installed with a lower bolt 303. 03, and the inner wall surface of the lower cylinder 301 is provided with lower positioning grooves 304 and upper positioning grooves 104. The lower external thread 302 and the upper external thread 102 have combined docking properties, and the lower positioning grooves 304 and the upper positioning grooves 104 have combined docking properties. By providing the upper positioning grooves 104 and the lower positioning grooves 304 on the inner walls of the upper cylinder 101 and the lower cylinder 301, the threaded steel bar 6 can be fixed with the upper positioning grooves 104 and the lower positioning grooves 304 by utilizing the grooves on its surface, thereby ensuring that the threaded steel bar 6 can maintain sufficient structural stability after being inserted into the upper connecting sleeve 1 and the lower connecting sleeve 3.

[0026] Threaded steel bars 6 are inserted inside the upper connecting sleeve 1 and the lower connecting sleeve 3, and anti-rust grease 7 is applied at the joints between the threaded steel bars 6 and the upper connecting sleeve 1 and the lower connecting sleeve 3. The surface structures of the lower positioning patterns 304 and the upper positioning patterns 104 match the surface structures of the threaded steel bars 6. The upper connecting sleeve 1 and the upper docking sleeve 2 are an integral structure, and the lower connecting sleeve 3 and the lower docking sleeve 4 are an integral structure. Anti-rust grease 7 is fully applied at the joints between the threaded steel bars 6 and the upper connecting sleeve 1 and the lower connecting sleeve 3. The anti-rust grease 7 can rust-proof and lubricate the surfaces of the metal parts at the joints to protect them from oxidation and corrosion and extend their service life.

[0027] In summary, if Figures 1 to 4 As shown, when using the high-strength hot-rolled ribbed steel bar connection sleeve, first, the anti-rust grease 7 is evenly applied to the inner wall surfaces of the upper connection sleeve 1, the upper docking sleeve 2, the lower connection sleeve 3 and the lower docking sleeve 4, and then the two threaded steel bars 6 to be docked are structurally docked by using the texture structure on the surface of the threaded steel bars 6 to correspond to the lower positioning texture 304 set on the inner wall surface of the lower cylinder 301. After the two groups of threaded steel bars 6 are docked with the lower connection sleeve 3, the upper positioning texture 104 set on the inner wall surface of the upper cylinder 101 is aligned with the texture structure on the upper half of the threaded steel bar 6, and then the upper connection sleeve 1 and the lower connection sleeve 3 are buckled and docked;

[0028] At the same time, the docking bolts 403 vertically arranged on the top surfaces of the docking blocks 402 on the left and right sides of the inner wall of the lower measuring cylinder 401 are directly inserted into the docking holes 203 opened inside the connecting blocks 202 on the left and right sides of the inner wall of the upper measuring cylinder 201, so that the upper connecting sleeve 1 and the lower connecting sleeve 3 are quickly docked and fixed, thereby connecting and fixing the two relative threaded steel bars 6, and then using the fastening nut 5 to screw in from the left and right sides of the upper connecting sleeve 1 and the lower connecting sleeve 3 after docking, using the upper external thread 102 and the lower external thread 302, so as to further connect and fix the upper connecting sleeve 1 and the lower connecting sleeve 3, and then use the upper bolt 103 and the lower bolt 303 to enter from the left and right ends of the upper cylinder 101 and the lower cylinder 301 respectively, so as to limit the threaded steel bar 6 inside the upper connecting sleeve 1 and the lower connecting sleeve 3, thereby improving the tightness of the structure and completing the connection and fixation of the threaded steel bar 6.

[0029] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A sleeve for connecting high-strength hot-rolled ribbed steel bars, comprising an upper connecting sleeve (1) and a lower butt sleeve (4), characterized in that: An upper docking sleeve (2) is arranged at the center of the upper connecting sleeve (1), and a lower connecting sleeve (3) is connected to the bottom of the upper connecting sleeve (1). The lower docking sleeve (4) is arranged at the center of the lower docking sleeve (4), and fastening nuts (5) are symmetrically threadedly installed at both ends of the upper docking sleeve (2) and the lower docking sleeve (4). The lower docking sleeve (4) comprises a lower measuring cylinder (401), a docking block (402) and a docking bolt (403). The docking blocks (402) are symmetrically arranged on both sides of the inner wall of the lower measuring cylinder (401), and the docking bolts (403) are arranged vertically and equidistantly on the top surface of the docking block (402).

2. A sleeve for connecting high-strength hot-rolled ribbed steel bars according to claim 1, characterized in that: The upper connecting sleeve (1) comprises an upper cylinder (101), an upper external thread (102), an upper bolt (103) and an upper positioning groove (104); the outer surface of the upper cylinder (101) is provided with an upper external thread (102), and an upper bolt (103) is vertically threadedly installed at one end of the upper cylinder (101) away from the upper connecting cylinder (2), and the inner wall surface of the upper cylinder (101) is provided with an upper positioning groove (104).

3. A sleeve for connecting high-strength hot-rolled ribbed steel bars according to claim 1, characterized in that: The upper docking cylinder (2) comprises an upper measuring cylinder (201), a connecting block (202) and docking holes (203); the connecting blocks (202) are symmetrically mounted on both sides of the inner wall of the upper measuring cylinder (201), and the connecting holes (203) are arranged equidistantly inside the connecting block (202).

4. A sleeve for connecting high-strength hot-rolled ribbed steel bars according to claim 3, characterized in that: The inner surface structure of the docking hole (203) matches the outer surface structure of the docking bolt (403), and the diameter of the upper docking tube (2) and the lower docking tube (4) after docking is larger than the diameter of the upper connecting sleeve (1) and the lower connecting sleeve (3) after docking.

5. A sleeve for connecting high-strength hot-rolled ribbed steel bars according to claim 2, characterized in that: The lower connecting sleeve (3) comprises a lower cylinder (301), a lower external thread (302), a lower bolt (303) and a lower positioning groove (304); the outer surface of the lower cylinder (301) is provided with a lower external thread (302); the lower bolt (303) is threadedly mounted on one end of the lower cylinder (301) away from the lower docking cylinder (4); and the inner wall surface of the lower cylinder (301) is provided with a lower positioning groove (304) and an upper positioning groove (104).

6. A sleeve for connecting high-strength hot-rolled ribbed steel bars according to claim 5, characterized in that: The lower external thread (302) and the upper external thread (102) are capable of being combined and butted together, and the lower positioning pattern (304) and the upper positioning pattern (104) are capable of being combined and butted together.

7. A sleeve for connecting high-strength hot-rolled ribbed steel bars according to claim 5, characterized in that: Threaded steel bars (6) are inserted into the interior of the upper connecting sleeve (1) and the lower connecting sleeve (3), and anti-rust grease (7) is applied to the joints between the threaded steel bars (6) and the upper connecting sleeve (1) and the lower connecting sleeve (3).

8. A sleeve for connecting high-strength hot-rolled ribbed steel bars according to claim 7, characterized in that: The surface structures of the lower positioning groove (304) and the upper positioning groove (104) match the surface structure of the threaded steel bar (6); the upper connecting sleeve (1) and the upper docking sleeve (2) are an integral structure; and the lower connecting sleeve (3) and the lower docking sleeve (4) are an integral structure.

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