A reinforcing bar coupling sleeve
By setting a rotary cutting rib and a blocking part in the rebar connecting sleeve, and using a torque wrench to install the sleeve, the problems of poor reliability and installation damage in the connection between the sleeve and the rebar are solved, and higher connection strength and stability are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY TENTH GRP FOURTH ENG CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-06-23
Smart Images

Figure CN224395907U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rebar connection sleeve technology, and more specifically, to a rebar connection sleeve. Background Technology
[0002] In the construction of high-speed railway box girders, the processing of ribbed steel bars into rolled straight thread ends and threaded sleeves are key equipment for achieving straight thread connections of steel bars.
[0003] When using a torque wrench to connect threaded sleeves to reinforcing bars, the sleeve is usually installed at the pre-embedded reinforcing bar location first. After the concrete pouring is completed, the extension reinforcing bar is then installed. However, when installing the threaded sleeve, the smooth surface of the threaded sleeve makes it difficult to twist, which can easily lead to insufficient installation torque. This results in poor connection reliability between the threaded sleeve and the reinforcing bar. At the same time, when installing the extension reinforcing bar, the torque wrench is usually used to install the outer wall of the extension reinforcing bar, which can easily cause damage to the outer wall of the extension reinforcing bar. Utility Model Content
[0004] This utility model provides a steel bar connecting sleeve that can overcome some or more defects of the prior art.
[0005] According to the present invention, a rebar connecting sleeve includes a sleeve body, the sleeve body includes a sleeve component detachably disposed at a pre-embedded rebar and a mating component detachably disposed at an extension rebar, the extension rebar passes through the mating component and is detachably connected to the sleeve component, and the sleeve component is slidably provided with a connecting component detachably connected to the mating component along its length direction.
[0006] This disclosure discloses a rebar connecting sleeve, which detachably sets the sleeve and the mating part. After the mating part is threadedly installed to the extension rebar, the extension rebar is threadedly installed to the sleeve by locking the torque wrench at the mating part. This reduces damage to the surface of the rebar during installation and protects the rebar from damage. After the extension rebar is threadedly installed to the sleeve, the installation is completed by threading the connector to the mating part. This improves the connection strength between the sleeve body and the embedded rebar and the extension rebar.
[0007] Preferably, a second rotary cutting rib is formed at the end of the sleeve connecting with the pre-embedded reinforcing bar, and a third rotary cutting rib is formed in the middle of the sleeve.
[0008] The aforementioned mechanism allows the socket to connect better with the torque wrench, facilitating its installation while also improving its structural strength.
[0009] Preferably, a blocking portion is formed at the connection end of the sleeve and the extended reinforcing bar, and the connector is slidably disposed between the blocking portion and the third rotary cutting rib, the blocking portion being used to limit the connector.
[0010] Through the above structure, the connecting piece can slide between the blocking part and the third rotary cutting rib, avoiding affecting the installation of the extension steel and the sleeve piece.
[0011] Preferably, a fourth rotary cutting rib is formed at the outer wall of the connecting piece.
[0012] Through the arrangement of the fourth rotary cutting rib, the torque can be more effectively transmitted, ensuring that the connecting piece can reach the required torque value during installation, thereby realizing more reliable connection.
[0013] Preferably, a first rotary cutting rib is formed at the outer wall of the fitting piece.
[0014] Through the arrangement of the first rotary cutting rib, the fitting piece can be better installed by the torque wrench.
[0015] Preferably, a threaded part for cooperating with the connecting piece is formed at the first rotary cutting rib.
[0016] Through the above structure, the connecting piece can be quickly connected with the sleeve piece, improving the installation efficiency of the connecting piece.
[0017] Preferably, an extension pipe extending upward is formed at the first rotary cutting rib, and a through cavity cooperating with the outer wall of the extension steel is formed in the extension pipe.
[0018] Through the arrangement of the extension pipe, stable support can be provided for the extension steel, enhancing the overall stability of the connection and improving the connection strength of the sleeve body and the embedded steel and the extension steel. BRIEF DESCRIPTION OF DRAWINGS
[0019] Fig. 1 It is a post-installation schematic view of a reinforcing steel bar connecting sleeve.
[0020] Fig. 2 It is a schematic view of the sleeve body structure of a reinforcing steel bar connecting sleeve.
[0021] Fig. 3 It is an explosion schematic view of a reinforcing steel bar connecting sleeve 210 and a fitting piece 220. DETAILED DESCRIPTION
[0022] In order to further understand the content of the present application, the present application will be described in detail in conjunction with the embodiments. It should be understood that the embodiments are only used to explain the present application and are not limited.
[0023] Embodiment 1
[0024] Please refer to Figs. 1-3This embodiment provides a rebar connecting sleeve, which includes a sleeve body 100. The sleeve body 100 includes a sleeve member 210 detachably disposed at the pre-embedded rebar and a mating member 220 detachably disposed at the extended rebar. The extended rebar passes through the mating member 220 and is detachably connected to the sleeve member 210. The sleeve member 210 is slidably provided with a connecting member 350 detachably connected to the mating member 220 along its length direction.
[0025] The present invention discloses a rebar connecting sleeve, which detachably sets a sleeve 210 and a mating part 220. After the mating part 220 is threadedly installed to the extension rebar, the extension rebar is threadedly installed to the sleeve 210 by clamping a torque wrench at the mating part 220. This reduces damage to the surface of the rebar during installation and protects the rebar from damage. After the extension rebar is threadedly installed to the sleeve 210, it is then threadedly installed to the mating part 220 by the connector 350 to complete the installation. This improves the connection strength between the sleeve body 100 and the embedded rebar and the extension rebar.
[0026] In this embodiment, a second rotary cutting rib 330 is formed at the end of the sleeve 210 connected to the pre-embedded steel bar, and a third rotary cutting rib 340 is formed in the middle of the sleeve 210.
[0027] The above mechanism allows the socket 210 to be better connected to the torque wrench, which facilitates the installation of the socket 210 and improves the structural strength of the socket 210.
[0028] In this embodiment, a blocking portion 360 is formed at the connection end of the sleeve 210 and the extended reinforcing bar, and the connector 350 is slidably disposed between the blocking portion 360 and the third rotary cutting rib 340. The blocking portion 360 is used to limit the connector 350.
[0029] The above structure allows the connector 350 to slide between the blocking part 360 and the third rotary cutting rib 340, avoiding any impact during the installation of the extension bar and the sleeve 210.
[0030] In this embodiment, a fourth spiral rib 351 is formed on the outer wall of the connector 350.
[0031] The fourth rotary cutting rib 351 helps to transmit torque more effectively, ensuring that the connector 350 can reach the required torque value during installation, thereby achieving a more reliable connection.
[0032] In this embodiment, a first rotary cutting rib 310 is formed on the outer wall of the mating part 220.
[0033] The first rotary cutting rib 310 allows the mating part 220 to be installed more easily using a torque wrench.
[0034] In this embodiment, a threaded portion 320 is formed at the first rotary cutting rib 310 to engage with the connector 350.
[0035] With the above structure, the connector 350 can be quickly connected to the sleeve 210, which improves the installation efficiency of the connector 350.
[0036] In this embodiment, an upwardly extending extension tube 311 is formed at the first rotary cutting rib 310, and a through cavity that cooperates with the outer wall of the extension steel bar is formed inside the extension tube 311.
[0037] By setting the extension tube 311, stable support can be provided for the extended reinforcing bar, enhancing the overall stability of the connection and improving the connection strength between the sleeve body 100 and the embedded reinforcing bar and the extension reinforcing bar.
[0038] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.
[0039] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited to this. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A steel bar connecting sleeve, characterized in that, The sleeve body (100) includes a sleeve component (210) detachably disposed at the pre-embedded reinforcing bar and a mating component (220) detachably disposed at the extension reinforcing bar. The extension reinforcing bar passes through the mating component (220) and is detachably connected to the sleeve component (210). The sleeve component (210) is slidably provided with a connecting component (350) detachably connected to the mating component (220) along its length direction.
2. The rebar connecting sleeve according to claim 1, characterized in that: A second rotary cutting rib (330) is formed at the end of the sleeve (210) connected to the pre-embedded steel bar, and a third rotary cutting rib (340) is formed in the middle of the sleeve (210).
3. A steel bar connecting sleeve according to claim 1, characterized in that: A blocking part (360) is formed at the end of the sleeve (210) and the extension bar. The connector (350) is slidably disposed between the blocking part (360) and the third rotary cutting rib (340). The blocking part (360) is used to limit the connector (350).
4. A steel bar connecting sleeve according to claim 3, characterized in that: A fourth rotary rib (351) is formed on the outer wall of the connector (350).
5. A steel bar connecting sleeve according to claim 1, characterized in that: A first rotary cutting rib (310) is formed on the outer wall of the mating part (220).
6. A steel bar connecting sleeve according to claim 5, characterized in that: A threaded portion (320) is formed at the first rotary cutting rib (310) to engage with the connector (350).
7. A steel bar connecting sleeve according to claim 5, characterized in that: An upwardly extending extension tube (311) is formed at the first rotary cutting rib (310), and a through cavity that cooperates with the outer wall of the extension reinforcement is formed inside the extension tube (311).