Novel steel bar connecting structure facilitating steel bar connection
By adopting a combined design of threaded sleeves and grouting sleeves in the steel bar connection structure and combining the use of the slurry ports, the problems of insufficient connection strength and poor stability in the existing steel bar connection structure are solved, and higher strength and more stable connection effects are achieved.
Patent Information
- Application Number
- CN202421552390.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-03
AI Technical Summary
The existing steel bar connection structures have problems such as insufficient connection strength, low utilization of steel bar length, and unstable connection structure.
A new type of steel bar connection structure including threaded sleeves and grouting sleeves is adopted. The threaded connection of the threaded sleeve and grouting fixation of the grouting sleeves is achieved, combined with the design of the slurry ports, stable connection of the steel bars is achieved.
The strength and stability of steel bar connections are improved, the utilization rate of steel bar length is increased, and the reliability of the connecting structure under load and vibration conditions is ensured.
Smart Images
Figure CN222796878U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel bar connection, in particular to a novel steel bar connection structure which is convenient for connecting steel bars. Background Art
[0002] Rebar refers to steel used for reinforced concrete and prestressed reinforced concrete, with a circular cross-section, sometimes a square with rounded corners. It includes plain round steel bars, ribbed steel bars, and twisted steel bars. Rebar connection refers to the connection method of steel bars. There are four main ways to connect steel bars: welding, lap joint, mechanical connection, and sleeve connection. Welding is a method of connecting steel bars together through melting and solidification. Welding connection has the advantages of high strength and good sealing, and is suitable for some occasions that require high strength and high durability; lap connection is a method of overlapping two steel bars together and connecting them into one by tying or welding steel bars. It is suitable for some occasions where the connection strength requirements are not particularly high; mechanical connection is a method of connecting steel bars together using mechanical force, such as threaded connection, clamping ring connection, etc. Mechanical connection is detachable and movable, so it is more suitable for occasions that need to change and adjust the connection frequently; sleeve connection refers to putting two steel bars together through a sleeve, and then strengthening the strength of the steel bar connection by pouring concrete.
[0003] However, the existing steel bar connection structure still has certain disadvantages. The existing welding connection structure cannot be changed or moved once the connection is completed, so it requires very accurate positioning and has a low fault tolerance rate; the existing steel bar lap connection structure requires a long part of the two steel bars to overlap, the length of the steel bars cannot be fully utilized, and it cannot withstand large loads; the existing steel bar sleeve connection structure cannot combine and fix the threaded connection and the grouting connection, and the connection structure is unstable. Utility Model Content
[0004] The utility model aims to provide a novel steel bar connection structure which is convenient for connecting steel bars, effectively improves the connection strength of the steel bar connection, increases the utilization rate of the steel bar length, and makes the steel bar connection structure more stable.
[0005] To achieve the above purpose, the utility model provides the following solutions:
[0006] A new type of steel bar connection structure that is convenient for connecting steel bars, comprises a connecting sleeve, wherein the connecting sleeve has steel bars connected at both ends, the two steel bars are connected to each other via the connecting sleeve, the connecting end of the steel bar is fixed inside the connecting sleeve, the connecting end length is set to 70 mm, the two connecting ends are spaced 50 mm apart, the ends of the two connecting ends are both provided with external threads with a length of 30 mm, the connecting sleeve comprises a threaded sleeve and a grouting sleeve, the total length of the threaded sleeve is 110 mm, the two ends of the threaded sleeve are provided with internal threads with a length of 30 mm, the steel bar and the threaded sleeve are connected by straight threads via the external threads and the internal threads, the two steel bars are connected and fixed via the threaded sleeve, the threaded sleeve is arranged inside the grouting sleeve, the total length of the grouting sleeve is 190 mm, the grouting sleeve surrounds the threaded sleeve, the inner wall of the grouting sleeve and the outer wall of the threaded sleeve are spaced 5 mm apart, the two ends of the grouting sleeve are fixed on the steel bar connecting end 30 mm away from the external threads, and the ends of the grouting sleeve and the steel bar are sealed and connected.
[0007] Furthermore, the threaded sleeve is provided with a slurry passage opening, the length of which is consistent with the interval between the connecting ends of the steel bars, and there are two slurry passage openings, both of which are axially symmetrically arranged in the middle section of the threaded sleeve.
[0008] Furthermore, the grouting sleeve includes a barrel, a barrel mouth, a limiting ring, a sealing rubber ring, a grouting hole, a grouting hole and a sealing cover. The barrel mouth is provided at both ends of the barrel, and a limiting ring is provided on the inner wall of the barrel. The limiting ring is 10 mm away from the barrel mouth. The sealing rubber ring is fixed between the barrel mouth and the limiting ring. The thickness of the sealing rubber ring is 10 mm. The grouting hole and the grouting hole are provided on the outside of the barrel. The grouting hole and the grouting hole are communicated with the inside of the barrel. There are two sealing covers, which are respectively fixed on the outer ends of the grouting hole and the grouting hole.
[0009] Furthermore, the grouting hole is arranged at the bottom end of the cylinder body, the slurry discharge hole is arranged at the top end of the cylinder body, and the sealing cover pressure cover is connected to the grouting hole and the slurry discharge hole.
[0010] In summary, the beneficial technical effects of the utility model are:
[0011] 1. The threaded sleeve is used to connect two steel bars by threaded connection, which is quick to install and convenient to construct;
[0012] 2. A grouting sleeve is selected and put on the outer layer of the threaded sleeve to further fix the threaded connection structure and make the connection structure more stable;
[0013] 3. The grouting hole is used to allow cement mortar to be poured into the grouting sleeve and fill the threaded sleeve at the same time, so that the intervals between the steel bars are filled with cement mortar, and the threaded sleeve and the grouting sleeve can fix the steel bar connection parts at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the threaded sleeve of the utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the grouting sleeve of the utility model.
[0017] 1. Connecting sleeve; 2. Rebar; 11. Threaded sleeve; 12. Grouting sleeve; 21. Connecting end; 111. Internal thread; 112. Grouting port; 121. Cylinder body; 122. Cylinder mouth; 123. Limiting ring; 124. Grout sealing rubber ring; 125. Grouting hole; 126. Grouting hole; 127. Sealing cover; 211. External thread. DETAILED DESCRIPTION
[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0019] The utility model discloses a new type of steel bar connection structure which is convenient for connecting steel bars, including a connection sleeve 1, steel bars 2 are connected at both ends of the connection sleeve 1, two steel bars 2 are connected to each other through the connection sleeve 1, a connection end 21 of the steel bar 2 is fixed inside the connection sleeve 1, the length of the connection end 21 is set to 70 mm, the interval between the two connection ends 21 is 50 mm, the connection end 21 is a small section of the steel bar 2 reserved for inserting into the connection sleeve 1, and is used to be fixed with the connection sleeve 1, the ends of the two connection ends 21 are both provided with an external thread 211 with a length of 30 mm, the connection sleeve 1 includes a threaded sleeve 11 and a grouting sleeve 12, the total length of the threaded sleeve 11 is 110 mm, the total length of the threaded sleeve 11 includes the interval between the steel bars 2 and the external thread 211 parts of the two steel bars 2, the two ends of the threaded sleeve 11 are provided with an internal thread 111 with a length of 30 mm, the steel bar 2 and the threaded sleeve 11 form a straight The threaded sleeve 11 is connected. The threaded part of the steel bar 2 connected by the straight threaded sleeve 11 has good tensile strength and can better withstand tension and pressure. Since the threaded part of the steel bar 2 has good earthquake resistance, it can effectively reduce the displacement and fracture of the steel bar 2 when natural disasters such as earthquakes occur. The straight threaded sleeve 11 connection is simple to operate and convenient to construct. The connecting parts adopt standard sizes and meet the requirements of the specifications, so it is easier to construct. The two steel bars 2 are connected and fixed through the threaded sleeve 11. The threaded sleeve 11 is provided with a grouting port 112. The length of the grouting port 112 is consistent with the interval between the connecting ends 21 of the steel bars 2. There are two grouting ports 112, both of which are axially symmetrically arranged in the middle section of the threaded sleeve 11. The grouting port 112 unifies the space between the grouting sleeve 12 and the threaded sleeve 11, so that the interval between the two steel bars 2 is passed through cement mortar. The connecting end 21 can be further fixed by cement mortar while being connected by threads. See details. Figure 1 , Figure 2 .
[0020] The threaded sleeve 11 is arranged inside the grouting sleeve 12. The total length of the grouting sleeve 12 is 190 mm. The total length of the grouting sleeve 12 includes the interval between the steel bars 2 and the length of the connecting ends 21 of the two steel bars 2. The grouting sleeve 12 surrounds the threaded sleeve 11. The interval between the inner wall of the grouting sleeve 12 and the outer wall of the threaded sleeve 11 is 5 mm, which is convenient for grouting. The two ends of the grouting sleeve 12 are fixed on the connecting end 21 of the steel bar 2 at a distance of 130 mm from the external thread 21. The reserved 30 cm position is fixed by cement mortar. The ends of the grouting sleeve 12 and the steel bars 2 are sealed and connected to ensure that the cement mortar does not leak from the ends. The grouting sleeve 12 includes a barrel 121, a barrel mouth 122, a limiting ring 123, a sealing rubber ring 124, a grouting hole 125, a grouting hole 126 and a sealing cover 127. The barrel 121 is provided with barrel mouths 122 at both ends, and the barrel mouths 122 pass through the steel bar 2 and are connected by the threaded sleeve 11. A limiting ring 123 is provided on the inner wall of the barrel 121. The limiting ring 123 is 10 mm away from the barrel mouth 122. The sealing rubber ring 124 is fixed between the barrel mouth 122 and the limiting ring 123. The thickness of the sealing rubber ring 124 is 10 mm. The rubber material used in the sealing rubber ring 124 has good sealing performance, can effectively isolate the medium, and avoid leakage and seepage of cement mortar. It has the characteristics of good elasticity and strong restoring force, can adapt to various tightly combined surfaces, and has high pressure resistance and deformation resistance. Therefore, it can also be used for steel bars 2 with textures on the surface. In order to achieve a good sealing effect, the limit ring 123 prevents the sealing rubber ring 124 from being displaced, avoids the possibility of leakage caused by sealing failure, and ensures the smooth progress of sealing. The grouting hole 125 and the grouting hole 126 are arranged on the outside of the cylinder body 121, and the grouting hole 125 and the grouting hole 126 are connected to the inside of the cylinder body 121. There are two sealing covers 127, which are respectively fixed on the outer ends of the grouting hole 125 and the grouting hole 126. The grouting hole 125 is arranged at the bottom end of the cylinder body 121, and the grouting hole 126 is arranged at the top end of the cylinder body 121. Cement mortar is poured from the bottom and discharged from the top. This structure can ensure that the cement mortar fully fills the interior of the grouting sleeve 12. The sealing cover 127 is gland-connected to the grouting hole 125 and the grouting hole 126. The sealing cover 127 and the sealing rubber ring 124 are made of the same material, have good sealing performance, and improve the stability of this connection structure. Figure 3 .
[0021] Example
[0022] Operation process
[0023] 1. Check the integrity of the threaded sleeve 11 and the grouting sleeve 12, and check whether there are cracks on the surface;
[0024] 2. Put two sealing rubber rings 124 on the connection ends 21 of the two steel bars 2, pass through the external threads 211, and move to a position 30 mm away from the external threads 211;
[0025] 3. Screw the external threads 211 of the connecting ends 21 of the two steel bars 2 into the internal threads 111 at both ends of the threaded sleeve 11;
[0026] 4. After the two steel bars 2 are connected and fastened by the threaded sleeve 11, the outer end of the steel bar 2 passes through the grouting sleeve 12;
[0027] 5. Move the limiting ring 123 of the grouting sleeve 12 to the inner side of the two sealing rubber rings 124, and then clamp the sealing rubber ring 124 between the limiting ring 123 and the tube mouth 122 according to its material characteristics;
[0028] 6. After the grouting sleeve 12 is fixed, slowly pour cement mortar from the grouting hole 125;
[0029] 7. After the cement mortar is discharged from the grouting hole 126, the grouting is stopped;
[0030] 8. Use the sealing cover 127 to seal the grouting hole 125 and the grouting hole 126, and wait for the cement mortar to solidify.
[0031] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A new type of steel bar connection structure for facilitating steel bar connection, comprising a connection sleeve (1), characterized in that: The two ends of the connecting sleeve (1) are connected to the steel bars (2), the two steel bars (2) are connected to each other via the connecting sleeve (1), the connecting end (21) of the steel bar (2) is fixed inside the connecting sleeve (1), the length of the connecting end (21) is set to 70 mm, the interval between the two connecting ends (21) is 50 mm, the ends of the two connecting ends (21) are both provided with an external thread (211) with a length of 30 mm, the connecting sleeve (1) comprises a threaded sleeve (11) and a grouting sleeve (12), the total length of the threaded sleeve (11) is 110 mm, the two ends of the threaded sleeve (11) are provided with an internal thread (111) with a length of 30 mm, the The steel bar (2) and the threaded sleeve (11) are connected by a straight thread via an external thread (211) and an internal thread (111). The two steel bars (2) are connected and fixed via the threaded sleeve (11). The threaded sleeve (11) is arranged inside a grouting sleeve (12). The total length of the grouting sleeve (12) is 190 mm. The grouting sleeve (12) surrounds the threaded sleeve (11). The inner wall of the grouting sleeve (12) and the outer wall of the threaded sleeve (11) are spaced 5 mm apart. Both ends of the grouting sleeve (12) are fixed on a connecting end (21) of the steel bar (2) 30 mm away from the external thread (211). The ends of the grouting sleeve (12) and the steel bar (2) are sealed and connected.
2. A new type of steel bar connection structure for facilitating steel bar connection according to claim 1, characterized in that: The threaded sleeve (11) is provided with a slurry passage opening (112), the length of which is consistent with the interval between the connecting ends (21) of the steel bars (2), and there are two slurry passage openings (112), both of which are axially symmetrically arranged in the middle section of the threaded sleeve (11).
3. A new type of steel bar connection structure for facilitating steel bar connection according to claim 1, characterized in that: The grouting sleeve (12) comprises a barrel (121), a barrel opening (122), a limiting ring (123), a grout sealing rubber ring (124), a grouting hole (125), a grout discharge hole (126) and a sealing cover (127). The barrel opening (122) is provided at both ends of the barrel (121). A limiting ring (123) is provided on the inner wall of the barrel (121). The limiting ring (123) is 10 mm away from the barrel opening (122). The sealing rubber ring (124) is provided at the inner wall of the barrel (121). The ring (124) is fixed between the barrel mouth (122) and the limiting ring (123); the sealing rubber ring (124) has a thickness of 10 mm; the grouting hole (125) and the grouting hole (126) are arranged on the outside of the barrel body (121); the grouting hole (125) and the grouting hole (126) are communicated with the inside of the barrel body (121); and there are two sealing covers (127), which are respectively fixed on the outer ends of the grouting hole (125) and the grouting hole (126).
4. A new type of steel bar connection structure for facilitating steel bar connection according to claim 3, characterized in that: The grouting hole (125) is arranged at the bottom end of the cylinder body (121), the slurry discharge hole (126) is arranged at the top end of the cylinder body (121), and the sealing cover (127) is press-connected to the grouting hole (125) and the slurry discharge hole (126).