Quick connector for twisted steel

Abstract

The utility model provides a threaded steel bar quick connector which comprises two holding devices, the two holding devices are installed at the ends of two connected threaded steel bars respectively, rib grooves matched with transverse ribs of the steel bars are formed in inner holes of the holding devices, the transverse ribs of the threaded steel bars are embedded into the rib grooves, and each holding device is composed of at least two locking pieces. A connecting assembly is arranged, through holes allowing threaded steel bars to penetrate are formed in the two ends of the connecting assembly, the connecting assembly comprises a first connecting part and a second connecting part, the first connecting part is detachably connected with the second connecting part, and the two holding devices are limited in the connecting assembly. The inner hole of the clasping device is provided with the rib groove matched with the transverse rib of the steel bar, and during connection operation, the transverse rib of the twisted steel bar is embedded into the rib groove, so that accurate positioning of multiple steel bars is realized, and relative displacement between the clasping device and the twisted steel bar is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar connection, in particular to a threaded steel bar quick connector. Background Art

[0002] Threaded steel bars are one of the more common types of steel bars on the market, and the more common way to connect threaded steel bars is to use connectors. The utility model patent application document with application number: 202020990061.8, named "A quick-connect connector for steel bars", discloses a steel bar connector that can be used as a connection between threaded steel bars. However, there are the following technical problems in this technical solution, that is, the steel bars are fixed by engaging the teeth of the locking plate with the steel bars. However, after the connection, when the steel bars are not pulled by external force, the teeth are only against the surface of the steel bars and cannot achieve an embedded bite effect. At this time, the steel bars are not really fixed. When the steel bars are pulled by external force, relative displacement is likely to occur between the steel bars and the locking plate, and the displacement distance is uncontrollable. In severe cases, the steel bars will fall out of the locking plate, resulting in connection failure. Utility Model Content

[0003] The purpose of the present utility model is to provide a threaded steel bar quick connector in response to the defects existing in the above-mentioned technology. The inner hole of the clamp is provided with a rib groove adapted to the transverse ribs of the steel bar. During the connection operation, the transverse ribs of the threaded steel bar are embedded in the rib groove to achieve precise positioning of multiple steel bars, prevent relative displacement between the clamp and the threaded steel bar, and improve the connection accuracy.

[0004] The purpose of this utility model is achieved by: comprising:

[0005] There are two grippers, each mounted on the ends of two connected threaded steel bars. The inner hole of the gripper is provided with a rib groove adapted to the transverse ribs of the threaded steel bars, and the transverse ribs of the threaded steel bars are embedded in the rib groove. The gripper is composed of at least two locking pieces.

[0006] A connecting component, wherein both ends of the connecting component are provided with through holes allowing threaded steel bars to pass through, the connecting component includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are detachably connected, and the two clamps are limited inside the connecting component.

[0007] In the above structure, a first conical surface is provided on the outside of the clamp, and a second conical surface is provided on the inside of the connecting component that matches and abuts against the first conical surface. The diameter of the second conical surface gradually decreases as it approaches the end of the connecting component. There are two second conical surfaces, which are respectively arranged in the first connecting part and the second connecting part. The two second conical surfaces respectively abut against the first conical surface of one clamp.

[0008] In the above structure, the first connecting portion and the second connecting portion are connected by threads.

[0009] In the above structure, an elastic element is provided on the outside of the clamping device, and the elastic element provides a clamping force for the locking piece, so that the locking piece is clamped to the end of the threaded steel bar.

[0010] In the above structure, an annular groove is further provided on the outside of the clamp, and the elastic element is sleeved in the annular groove.

[0011] In the above structure, both sides of the annular groove are cylindrical surfaces, and the cylindrical surfaces are arranged at the large diameter end of the first conical surface.

[0012] In the above structure, two gaps are formed after the clamp is connected to the threaded steel bar, and the gaps are used to accommodate the longitudinal ribs of the threaded steel bar.

[0013] In the above structure, planes are provided on both sides of the clamp, and the planes are located outside the longitudinal ribs of the threaded steel bars.

[0014] In the above structure, the outer cross-section of the connecting component is entirely or partially one or more combinations of circular, square, hexagonal, and octagonal.

[0015] In the above structure, an anti-slip protrusion is provided at the end of the connecting assembly, and the diameter of the inner hole of the anti-slip protrusion is smaller than the diameter of the clamp when it is installed on the threaded steel bar.

[0016] The beneficial effects of the present invention are as follows: the inner hole of the clamp is provided with a rib groove adapted to the transverse rib of the steel bar. During the connection operation, the transverse rib of the threaded steel bar is embedded in the rib groove, thereby realizing the precise positioning of multiple steel bars and preventing relative displacement between the clamp and the threaded steel bar. The transverse rib structure of the steel bar itself is cleverly utilized to improve the connection accuracy and the error correction of the steel bar diameter. The clamp and the connection component are matched through the conical surface. When pulled by external force, the clamp and the threaded steel bar are more tightly matched, thereby improving the tensile strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the exploded structure of the connector of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the connector of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection method of the connector of the utility model;

[0020] Figure 4 It is a cross-sectional view of the connector of the utility model in use state. DETAILED DESCRIPTION

[0021] This application provides a threaded rebar quick connector. The inner hole of the clamp is provided with a rib groove that adapts to the transverse ribs of the rebar. During the connection operation, the transverse ribs of the rebar are embedded in the rib groove, achieving precise positioning of multiple rebars and preventing relative displacement between the clamp and the rebar. This cleverly utilizes the transverse rib structure of the rebar itself to improve connection accuracy and error correction of rebar diameter. The clamp and the connecting assembly are mated through a tapered surface. When subjected to external pulling force, the clamp and the rebar fit more tightly, improving tensile strength. This solves the problem of unstable positioning between the locking plate and the rebar in the prior art.

[0022] The following further describes this implementation case with reference to the accompanying drawings:

[0023] Depend on Figure 1 — Figure 4 It can be seen that the present application includes a clamp 1, and there are two clamps 1, which are respectively installed at the ends of two connected threaded steel bars 6. The inner hole of the clamp 1 is provided with a rib groove 111 adapted to the transverse rib 610 of the steel bar, and the transverse rib 610 of the threaded steel bar 6 is embedded in the rib groove 111. The clamp 1 is composed of at least two locking plates 110.

[0024] It should be understood that the specific structure and arrangement of the rib grooves 111 in the present application match the structure and arrangement of the transverse ribs 610 of the threaded steel bar 6, and it is appropriate that the transverse ribs 610 can be embedded in the rib grooves 111. There are three common ways to set up transverse ribs of steel bars, mainly including spiral, herringbone and crescent shapes. That is to say, the specific structure of the rib grooves 111 in the present application can be provided with spiral, herringbone and crescent shapes accordingly, and the spacing between adjacent rib grooves 111 is adapted to the spacing of the transverse ribs 610 of the steel bars. However, the present application is not limited to the above three shapes of rib grooves 111. If new transverse ribs appear on the threaded steel bar 6, the structure of the rib grooves 111 can be adaptively modified.

[0025] A connecting component 2 is also provided, and through holes 230 are provided at both ends of the connecting component 2 to allow the threaded steel bars 6 to pass through. The connecting component 2 includes a first connecting part 210 and a second connecting part 220. The first connecting part 210 and the second connecting part 220 are detachably connected, and the two clamps 1 are limited inside the connecting component 2.

[0026] In this embodiment, the first connecting portion 210 and the second connecting portion 220 are connected using a detachable connection. Two grippers 1 are respectively mounted on the ends of the two connected threaded rebars 6. The two grippers 1 are then positioned within the connection assembly 2 to achieve connection. This embodiment achieves a significant technical advantage by fully utilizing the original structure of the threaded rebar 6. After providing a rib groove 111 within the inner hole of the gripper 1, the transverse ribs 610 of the threaded rebar 6 are embedded and engaged with the rib groove 111. The rib groove 111 and the transverse rib 610 cooperate to effectively prevent relative displacement between the threaded rebar 6 and the gripper 1, thereby improving the reliability of the connection.

[0027] On the basis of the above embodiment, preferably, the outside of the clamp 1 is provided with a first conical surface 112, and the inside of the connecting component 2 is provided with a second conical surface 240 that matches and abuts against the first conical surface 112, and the diameter of the second conical surface 240 gradually decreases in the direction close to the end of the connecting component 2. There are two second conical surfaces 240, which are respectively arranged in the first connecting part 210 and the second connecting part 220, and the two second conical surfaces 240 respectively abut against the first conical surface 112 of one clamp 1.

[0028] In this embodiment, the first conical surface 112 and the second conical surface 240 are provided for two main purposes. First, the clamping device 1 and the connecting component 2 are limited by the abutment between the first conical surface 112 and the second conical surface 240, so that the clamping device 1 is limited inside the connecting component 2. Second, the clamping device 1 and the connecting component 2 are matched with each other by the conical surfaces. After the two threaded steel bars 6 are connected, when the threaded steel bars 6 are pulled by external force, the clamping device 1 tends to move outward. Through the cooperation between the conical surfaces, the clamping device 1 is firmly clamped to the outside of the threaded steel bars 6. The greater the external force, the greater the clamping force, thereby ensuring the reliability of the connection.

[0029] Based on the above embodiment, preferably, the first connecting portion 210 and the second connecting portion 220 are connected by threads. In the drawings of the present embodiment, the outer diameter of the first connecting portion 210 is smaller than the outer diameter of the second connecting portion 220. Therefore, an external thread is provided at the end of the first connecting portion 210, and an internal thread is provided in the inner hole of the second connecting portion 220. It should be understood that this application does not limit the outer diameters of the first connecting portion 210 and the second connecting portion 220. They can also be made to have the same diameter or the first connecting portion 210 has a larger diameter than the second connecting portion 220, and the threads can be provided accordingly.

[0030] Based on the above embodiment, preferably, an elastic element 3 is provided on the outside of the clamping device 1, and the elastic element 3 provides a clamping force for the locking piece 110, so that the locking piece 110 is clamped to the end of the threaded steel bar.

[0031] It should be understood that the elastic element 3 in this embodiment can be an O-ring or other component made of elastic material, which is mounted on the outside of the cling device 1. On the one hand, it can prevent the locking piece 110 of the cling device 1 from being scattered during transportation. On the other hand, during connection, the elastic element 3 provides a clamping force for the cling device 1, preventing the locking piece 110 from being scattered during the connection process, and facilitating operation for the operator.

[0032] Based on the above embodiment, preferably, an annular groove 120 is further provided on the outside of the clinger 1, and the elastic element 3 is inserted into the annular groove 120. After the annular groove 120 is provided, the elastic element 3 is initially limited by the annular groove 120, so that the elastic element 3 can be more stably inserted into the outside of the clinger 1.

[0033] Based on the above embodiment, preferably, the annular groove 120 is flanked by cylindrical surfaces 130, which are located at the larger diameter end of the first tapered surface 112. Placing the annular groove 120 on the cylindrical surface 130 primarily facilitates machining of the annular groove 120. Furthermore, since the larger diameter end of the first tapered surface 112 of the clamp 1 is larger and heavier than the smaller diameter end, securing the larger diameter end is more stable.

[0034] Based on the above embodiment, preferably, the clamp 1 is connected to the threaded steel bar 6 to form two gaps 130, and the gaps 130 are used to accommodate the longitudinal ribs 620 of the threaded steel bar 6. Figure 3 When the threaded steel bar 6 is connected, its longitudinal rib 620 is clamped in the gap 130 formed by the locking plate 110 of the clamp 1. Compared with machining a longitudinal groove in the clamp 1 to accommodate the longitudinal rib 620, the machining process can be reduced.

[0035] Based on the above embodiment, preferably, the clamp 1 is provided with flat surfaces 140 on both sides, and the flat surfaces 140 are located outside the longitudinal ribs 620 of the threaded steel bar 6. On the one hand, the flat surfaces 140 are more convenient for the operator to operate than cylindrical surfaces. In addition, the flat surfaces 140 are located outside the longitudinal ribs 620, which makes it easier for the operator to determine the installation direction.

[0036] On the basis of the above-mentioned embodiment, preferably, the outer cross-section of the connecting component 2 is entirely or partially one or more combinations of circular, square, hexagonal, and octagonal. When the outer cross-section of the connecting component 2 is set to a polygon, it is convenient to operate the connecting component 2 using a wrench or the like. In this embodiment, the connecting component 2 includes a first connecting portion 210 and a second connecting portion 220, wherein the outer contours of the first connecting portion 210 and the second connecting portion 220 may be the same or different. For example, the outer contours of the first connecting portion 210 and the second connecting portion 220 are both set to be circular; or the first connecting portion 210 is set to a direction, or one section thereof is set to be square, and the second connecting portion is set to be circular. This application includes a variety of embodiments.

[0037] Based on the above embodiment, preferably, the end of the connecting component 2 is provided with an anti-slip protrusion 260. The diameter of the inner hole of the anti-slip protrusion 260 is smaller than the diameter of the clamp 1 when installed on the threaded steel bar 6. The provision of the anti-slip protrusion 260 can prevent the clamp 1 from being dislodged from the connecting component 2 during a tensile test or when the threaded steel bar 6 is subjected to excessive external force. Because machining errors may occur during the machining of the connecting component 2, especially the second tapered surface 240, or the first tapered surface 112 of the clamp 1, if machining errors lead to problems with the fit of the two tapered surfaces, the anti-slip protrusion 260 can effectively prevent the clamp 1 from being dislodged, providing error correction.

[0038] Connection method description: See Figure 3 、 Figure 4 , before connecting Figure 3 As shown, the first connection part 210 and the second connection part 220 of the connection component 2 are removed and connected in a separated state, and then the first connection part 210 and the second connection part 220 are respectively put on the outside of the two threaded steel bars 6 that need to be connected through the through holes 230 at both ends of the connection component 1, and the ends of the threaded steel bars 6 are extended to a certain length from the first connection part 210 and the second connection part 220. Then, the two clamps 1 are respectively put on the ends of the two threaded steel bars 6 to ensure that the transverse ribs 610 of the threaded steel bars 6 are embedded in the rib grooves 111 of the clamp 1. Then the first connection part 210 and the second connection part 220 are connected by threads, and the connection of the two threaded steel bars 6 is completed. The cross-sectional structure after connection is as shown in FIG. Figure 4 This application fully utilizes the existing transverse rib 610 structure of the threaded steel bar 6, ensuring connection stability while also improving the correctness of the threaded steel bar 6 diameter. Even if the diameter of the threaded steel bar 6 is near the standard lower tolerance, the connection can still be completed effectively. Furthermore, the structure is simple, enabling quick connection of the threaded steel bar.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

Claims

1. Threaded steel bar quick connector, characterized in that: include: There are two grippers, each mounted on the ends of two connected threaded steel bars. The inner hole of the gripper is provided with a rib groove adapted to the transverse ribs of the threaded steel bars, and the transverse ribs of the threaded steel bars are embedded in the rib groove. The gripper is composed of at least two locking pieces. A connecting component, wherein both ends of the connecting component are provided with through holes allowing threaded steel bars to pass through, the connecting component includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are detachably connected, and the two clamps are limited inside the connecting component.

2. The threaded steel bar quick connector according to claim 1, characterized in that: A first conical surface is provided on the outside of the clamp, and a second conical surface is provided on the inside of the connecting component that matches and abuts against the first conical surface. The diameter of the second conical surface gradually decreases as it approaches the end of the connecting component. There are two second conical surfaces, which are respectively arranged in the first connecting part and the second connecting part. The two second conical surfaces respectively abut against the first conical surface of one clamp.

3. The threaded steel bar quick connector according to claim 2, characterized in that: The first connecting portion and the second connecting portion are connected via threads.

4. The threaded steel bar quick connector according to claim 2, characterized in that: An elastic element is provided on the outside of the clamping device, and the elastic element provides a clamping force for the locking piece, so that the locking piece is clamped to the end of the threaded steel bar.

5. The threaded steel bar quick connector according to claim 4, characterized in that: An annular groove is further provided on the outside of the clamp, and the elastic element is sleeved in the annular groove.

6. The threaded steel bar quick connector according to claim 5, characterized in that: Both sides of the annular groove are cylindrical surfaces, and the cylindrical surfaces are arranged at the large end of the first conical surface.

7. The threaded steel bar quick connector according to claim 1, characterized in that: After the clamp is connected to the threaded steel bar, two gaps are formed, and the gaps are used to accommodate the longitudinal ribs of the threaded steel bar.

8. The threaded steel bar quick connector according to claim 7, characterized in that: Planes are provided on both sides of the clamp, and the planes are located outside the longitudinal ribs of the threaded steel bars.

9. The threaded steel bar quick connector according to claim 1 or 2, characterized in that: The outer cross-section of the connecting component is entirely or partially circular, square, hexagonal, octagonal or a combination of one or more shapes.

10. The threaded steel bar quick connector according to claim 9, characterized in that: An anti-slip protrusion is provided at the end of the connecting assembly, and the diameter of the inner hole of the anti-slip protrusion is smaller than the diameter of the clamp when it is installed on the threaded steel bar.

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