Connecting device and steel bar connecting system

Abstract

The utility model provides a connecting device and a steel bar connecting system.The connecting device comprises a first connector, a second connector and a sleeve, one end of the first connector is suitable for being detachably connected with the end of a bar, the other end of the first connector is provided with a first annular flange, and the first annular flange extends along the peripheral side of the first connector; one end of the second connector is suitable for being detachably connected with the end of another bar, and external threads are arranged on the peripheral side of the second connector. A through hole is formed in the sleeve so that the sleeve can be arranged on the peripheral side of the first connector in a sleeving mode, a second annular flange is arranged at one end of the inner wall of the through hole, a first internal thread is further arranged on the inner wall of the through hole, and the first internal thread can be screwed with the external thread so that when the first annular flange abuts against the second connector, the second annular flange can abut against the second connector. And the first joint is connected with the second joint through the second annular flange. The connecting device has the advantages of being convenient to reuse and high in connecting strength.

Description

Technical Field

[0001] The present application belongs to the technical field of building construction, and more specifically, to a connection device and a steel bar connection system. Background Art

[0002] Since the steel bars have a maximum length and are limited in length for ease of transportation, the ends of two sections of steel bars need to be connected during the construction of reinforced concrete buildings to increase the length of the steel bars in the reinforced concrete.

[0003] However, the connection device in the related art is not easy to disassemble and reuse after connecting two sections of steel bars. Especially in the process of connecting prefabricated components, since the steel bars have been embedded in concrete and cannot rotate, the traditional steel sleeve connection is difficult to effectively install and achieve effective load transfer. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a connecting device and a steel bar connecting system, which can effectively connect two steel bars without rotating the steel bars to transfer tensile and compressive loads, while ensuring the detachability of the connecting device and the reusability of the structural components.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a connecting device, including: a first joint, one end of the first joint is suitable for being detachably connected to the end of a rod, and the other end of the first joint is provided with a first annular flange, and the first annular flange extends along the outer peripheral side of the first joint; a second joint, one end of the second joint is suitable for being detachably connected to the end of another rod, and the outer peripheral side of the second joint is provided with an external thread; a sleeve, a through hole is provided in the sleeve so that the sleeve can be sleeved on the outer peripheral side of the first joint, one end of the inner wall of the through hole is provided with a second annular flange, and the inner wall of the through hole is also provided with a first internal thread, the first internal thread can be screwed together with the external thread, so that when the first annular flange abuts against the second joint, the first joint is connected to the second joint through the second annular flange.

[0006] The beneficial effect of the connecting device provided by the present application is that, compared with the prior art, the connecting device of the present application is connected to one bar stock through a first joint, and is connected to another bar stock through a second joint, and the two bar stocks are connected by rotating the sleeve to connect the first joint and the second joint, thereby simplifying the operation steps when connecting the bar stocks, avoiding the rotation process of the bar stocks, reducing the operation space required for the bar stock connection, and facilitating the rapid and efficient connection of the two bar stocks in a small space; on the other hand, when the bar stocks are connected through the first joint and the second joint, the first joint and the second joint directly abut against each other, thereby improving the axial pressure-bearing capacity of the connecting device of the present application, thereby making the connecting device provided by the present application have a higher axial pressure-bearing capacity and not easily damaged by pressure, which, on the one hand, makes the connecting device provided by the present application have the advantage of higher connection strength; on the other hand, any two of the first joint, the second joint and the sleeve can be disassembled, thereby making the connecting device provided by the present application have the advantages of being easy to disassemble from between the two sections of bar stocks and being reusable.

[0007] Optionally, a first hole is provided at one end of the first joint, and the inner wall of the first hole is provided with a second internal thread to be suitable for connecting with the end of the rod; a second hole is provided at one end of the second joint, and the inner wall of the second hole is provided with a third internal thread to be suitable for connecting with the end of the rod.

[0008] Optionally, the external thread and the second internal thread have the same rotation direction, and the second internal thread and the third internal thread have opposite rotation directions.

[0009] Optionally, the first hole is a blind hole, the end of the first joint facing away from the first hole has a first end face, the second hole is a blind hole, the end of the second joint facing away from the second hole has a second end face, and when the second annular flange abuts against the first annular flange, the first end face is pressed against the second end face.

[0010] Optionally, the first end surface is a flat end surface, and / or the second end surface is a flat end surface.

[0011] Optionally, the diameter size of any position of the first end surface is larger than the aperture of the first hole, and the diameter size of any position of the second end surface is larger than the aperture of the second hole.

[0012] Optionally, a diameter of the first end surface is smaller than a diameter of the second end surface.

[0013] Optionally, the first annular flange forms a first annular end face at one end away from the first end face, and the first annular end face extends in a direction orthogonal to the axial direction of the first joint, and the second annular flange forms a second annular end face at one end toward the first internal thread, and the second annular end face extends in a direction orthogonal to the axial direction of the sleeve.

[0014] An embodiment of the present application also proposes a steel bar connection system, including a first steel bar, a second steel bar and a connecting device, wherein the connecting device is a connecting device according to any of the above embodiments, one end of the first steel bar can be threadedly connected to the first joint, and one end of the second steel bar can be threadedly connected to the second joint.

[0015] Optionally, one end of the first steel bar has a first thread segment, which can be screwed together with the second internal thread, and one end of the second steel bar has a second thread segment, which can be screwed together with the third internal thread, the bottom diameter of the first thread segment is greater than or equal to the nominal diameter of the first steel bar, and the bottom diameter of the second thread segment is greater than or equal to the nominal diameter of the second steel bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the structure of a steel bar connection system provided in an embodiment of the present application;

[0018] Figure 2 (a) is a schematic diagram of the first connector of the connecting device provided in the embodiment of the present application. Figure 1 ;

[0019] Figure 2 (b) is a schematic diagram of the first connector of the connecting device provided in the embodiment of the present application. Figure 2 ;

[0020] Figure 2 (c) is a schematic diagram of the first connector of the connecting device provided in the embodiment of the present application. Figure 3 ;

[0021] Figure 3 (a) is a schematic diagram of the second connector of the connecting device provided in the embodiment of the present application. Figure 1 ;

[0022] Figure 3 (b) is a schematic diagram of the second connector of the connecting device provided in the embodiment of the present application. Figure 2 ;

[0023] Figure 4 (a) is a schematic diagram of a sleeve of a connecting device provided in an embodiment of the present application. Figure 1 ;

[0024] Figure 4 (b) is a schematic diagram of a sleeve of a connecting device provided in an embodiment of the present application. Figure 2 ;

[0025] Figure 4 (c) in Figure 4 (b) is a schematic cross-sectional view at AA;

[0026] Figure 5 A schematic diagram of the steps for installing the connection device provided in an embodiment of the present application;

[0027] Figure 6 A schematic structural diagram of a first steel bar in a steel bar connection system provided in an embodiment of the present application.

[0028] Among them, the reference numerals in the figure are:

[0029] 1000. Steel bar connection system;

[0030] 100, connecting device; 10, first joint; 11, first annular flange; 12, first hole; 13, second internal thread; 101, first end face; 20, second joint; 21, external thread; 22, second hole; 23, third internal thread; 201, second end face; 30, sleeve; 31, through hole; 32, first internal thread; 33, second annular flange; 40, first bar stock; 50, second bar stock;

[0031] 200, first steel bar; 210, first threaded section;

[0032] 300. Second steel bar. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] Please also read Figure 1 , Figure 2 , Figure 3 and Figure 4 Now, the connection device 100 provided in the embodiment of the present application is described. The connection device 100 includes a first connector 10, a second connector 20 and a sleeve 30.

[0038] One end of the first joint 10 is suitable for being detachably connected to the end of a bar material, and the other end of the first joint 10 is provided with a first annular flange 11 , which extends along the outer circumference of the first joint 10 .

[0039] Specifically, Figure 1 and Figure 2 As shown, the first joint 10 extends along the x direction in the figure, and one end of the first joint 10 along the x direction in the figure can be detachably connected to a rod such as a steel bar, and the other end of the first joint 10 along the x direction in the figure is provided with a first annular flange 11, and the end of the first annular flange 11 coincides with the end of the first joint 10.

[0040] One end of the second joint 20 is suitable for being detachably connected to the end of another bar material, and an external thread 21 is provided on the outer peripheral side of the second joint 20 .

[0041] Specifically, Figure 1 and Figure 3 As shown, the second joint 20 extends along the x direction in the figure, one end of the second joint 20 along the x direction in the figure can be detachably connected to the steel bar, and the other end of the second joint 20 along the x direction in the figure can directly abut against one end of the first joint 10 provided with the first annular flange 11.

[0042] A through hole 31 is provided in the sleeve 30 so that the sleeve 30 can be sleeved on the outer peripheral side of the first joint 10. A second annular flange 33 is provided at one end of the inner wall of the through hole 31. The inner wall of the through hole 31 is also provided with a first internal thread 32. The first internal thread 32 can be screwed together with the external thread 21 so that the second annular flange 33 pushes the first annular flange 11 to abut against the second joint 20.

[0043] Specifically, Figure 1 and Figure 4 As shown, the through hole 31 passes through the sleeve 30 along the axial direction of the sleeve 30, the aperture of the through hole 31 is larger than the outer diameter of the first joint 10, and the maximum aperture of the through hole 31 is larger than the outer diameter of the first annular flange 11, so that the first joint 10 can be loosely fitted on the inner side of the sleeve 30, and the sleeve 30 slides relative to the first joint 10 along the x direction in the figure.

[0044] A second annular flange 33 is provided at one end of the through hole 31, and the inner diameter of the second annular flange 33 is smaller than the outer diameter of the first annular flange 11, so that the side of the second annular flange 33 facing the through hole 31 can abut against the side of the first annular flange 11 facing the middle section of the first joint 10, and after the second annular flange 33 abuts against the first annular flange 11, the second annular flange 33 rotates along the circumferential direction of the first annular flange 11.

[0045] Please refer to Figures 1 to 5 When the connection device 100 provided in the present application is used, the sleeve 30 is first sleeved on the outer peripheral side of the first joint 10, so that the end of the sleeve 30 away from the second annular flange 33 is sleeved on the outer peripheral side of the first annular flange 11; Figure 5 As shown in (a) and (b) in FIG. 1 , the first joint 10 is connected to the first bar material 40, and the second joint 20 is connected to the second bar material 50; Figure 5 As shown in (c) and (d) in the figure, the first joint is then rotated outward in the opposite direction until the end of the first annular flange 11 abuts against the end of the second joint 20, and finally the first internal thread 32 and the external thread 21 are screwed together to connect the first joint 10 and the second joint 20.

[0046] The beneficial effects of the connection device 100 provided by the present application are as follows: compared with the prior art, on the one hand, the connection device 100 of the present application is connected to one bar stock through the first joint 10, and is connected to another bar stock through the second joint 20, and the two bars are connected by rotating the sleeve 30 in a manner of connecting the first joint 10 and the second joint 20, and only three steps are required to connect the two bars, which simplifies the operation steps when connecting the bars, reduces the operation space required for the bar connection, and facilitates the fast and efficient connection of the two bars in a small space; on the other hand, when the bars are connected through the first joint 10 and the second joint 20, the first joint 10 and the second joint 20 directly abut against each other, thereby improving the axial pressure bearing capacity of the connection device 100 of the present application, so that the axial pressure bearing capacity of the connection device 100 provided by the present application is relatively high and not easily damaged by pressure. On the one hand, the connection device 100 provided by the present application has the advantage of relatively high connection strength, and on the other hand, any two of the first joint 10, the second joint 20 and the sleeve 30 can be disassembled, so that the connection device 100 provided by the present application has the advantages of being easy to disassemble from between two sections of bars and being reusable. Most importantly, during the process of connecting two sections of bar material, the steel bar connecting device 100 does not need to rotate any section of the bar material, and the two sections of the bar material can be connected by simply rotating the sleeve 30, which is completely suitable for steel bar connection of prefabricated components.

[0047] Please refer to Figures 1 to 3 In some embodiments of the present application, a first hole 12 is provided at one end of the first joint 10, and the inner wall of the first hole 12 is provided with a second internal thread 13 to be suitable for connecting with the end of the rod; a second hole 22 is provided at one end of the second joint 20, and the inner wall of the second hole 22 is provided with a third internal thread 23 to be suitable for connecting with the end of the rod.

[0048] Specifically, the bar stock includes a first bar stock 40 and a second bar stock 50. The end of the first bar stock 40 can be assembled in the first hole 12 via the second internal thread 13 so that the first bar stock 40 and the first joint 10 are detachably connected. The end of the second bar stock 50 can be assembled in the second hole 22 via the third internal thread 23 so that the second bar stock 50 is detachably connected to the second joint 20.

[0049] Therefore, the first joint 10 is connected to the first bar stock 40 through a thread, and the second joint 20 is connected to the second bar stock 50 through a thread. On the one hand, the operation of connecting the first joint 10 to the first bar stock 40 and connecting the second joint 20 to the second bar stock 50 is simplified, and the first joint 10 and the second joint 20 can be connected to the ends of the bar stock respectively in a narrow space, so that the connecting device 100 of the embodiment of the present application has the advantages of easy installation in a small space and high installation efficiency; on the other hand, it is convenient to remove the first joint 10 and the second joint 20 from the corresponding bar stock respectively, so that the connecting device 100 of the embodiment of the present application has good reusability.

[0050] In addition, when connecting the prefabricated components, the steel bars of the prefabricated components cannot rotate. During the process of connecting the first bar 40 and the second bar 50 by the connecting device 100 provided in the present application, the first bar 40 and the second bar 50 can remain stationary, and the connection of the first bar 40 and the second bar 50 can be completed only by rotating the first joint 10, the second joint 20 and the sleeve 30. Therefore, the connecting device 100 provided in the present application can be used to connect prefabricated components, that is, any one of the first bar 40 and the second bar 50 can be the steel bars in the prefabricated components. When the prefabricated components are connected by the connecting device 100 provided in the present application, there is no need to rotate the steel bars in the prefabricated components, so that the connecting device 100 provided in the present application can be used to connect prefabricated components.

[0051] In addition, after the first joint 10 and the second joint 20 are respectively connected to the rods, the first joint 10 and the second joint 20 are connected by rotating the sleeve 30. When the sleeve 30 rotates, the first joint 10 can remain stationary relative to the first rod 40, and the second joint 20 can remain stationary relative to the second rod 50, thereby avoiding movement or rotation of the rods during the installation process of the connecting device 100 of the embodiment of the present application.

[0052] In some embodiments of the present application, the external thread 21 and the second internal thread 13 have the same rotation direction, and the second internal thread 13 and the third internal thread 23 have opposite rotation directions.

[0053] Specifically, when the connecting device 100 of the embodiment of the present application is installed, when the second joint 20 is threadedly connected to the second bar 50, the second joint 20 rotates relative to the second bar 50 along a set direction, and when the sleeve 30 is connected to the second joint 20, the sleeve 30 also rotates relative to the second joint 20 along the above-mentioned set direction.

[0054] Therefore, the sleeve 30 and the second joint 20 have the same rotation direction relative to the second bar 50 during installation. On the one hand, this can prevent the second joint 20 from loosening with the end of the second bar 50 when the sleeve 30 is installed. On the other hand, the second joint 20 can be further fastened to the end of the second bar 50 by installing the sleeve 30.

[0055] The second internal thread 13 and the third internal thread 23 have opposite rotation directions, that is, one of the second internal thread 13 and the third internal thread 23 is left-handed, and the other of the second internal thread 13 and the third internal thread 23 is right-handed. Since the first joint 10 and the second joint 20 are arranged relative to each other, when the rotation directions of the first joint 10 and the second joint 20 relative to the second bar stock 50 are the same, the first joint 10 is fastened to the first bar stock 40 and the second joint 20 is fastened to the second bar stock 50.

[0056] Therefore, when the connecting device 100 of the embodiment of the present application is installed, the sleeve 30 and the second joint 20 have the same rotation direction relative to the first bar stock 40 and the second bar stock 50 during installation. After the second annular flange 33 abuts against the first annular flange 11, the sleeve 30 drives the first joint 10 so that the sleeve 30 and the first joint 10 have the same rotation direction relative to the first bar stock 40 and the second bar stock 50 during installation. On the one hand, it can avoid loosening between the first joint 10 and the first bar stock 40 when the sleeve 30 connects the first joint 10 and the second joint 20. On the other hand, it can tighten the first joint 10 and the first bar stock 40 when the sleeve 30 connects the first joint 10 and the second joint 20.

[0057] In some embodiments of the present application, the first hole 12 is a blind hole, and the end of the first joint 10 away from the first hole 12 has a first end face 101, the second hole 22 is a blind hole, and the end of the second joint 20 away from the second hole 22 has a second end face 201, and when the second annular flange 33 abuts against the first annular flange 11, the first end face 101 is pressed against the second end face 201.

[0058] Specifically, Figure 2 As shown in (a) of FIG. 1 , the first hole 12 extends from one end of the first joint 10 in the x direction to the interior of the first joint 10, so that the first end face 101 is a complete end face, as shown in FIG. Figure 3 As shown, the second hole 22 extends from the other end of the second joint 20 in the x direction to the interior of the second joint 20, so that the second end face 201 is a complete end face, and the first end face 101 and the second end face 201 have the same shape, so that when the first joint 10 and the second joint 20 are abutted, the first end face 101 can be in full contact with the second end face 201.

[0059] Thus, on the one hand, the first end face 101 and the second end face 201 are both complete end faces, and on the other hand, the contact area between the first joint 10 and the second joint 20 can be increased. When the connecting device 100 provided in the present application is under pressure between the first bar material 40 and the second bar material 50, the pressure between the first joint 10 and the second joint 20 is reduced, thereby improving the compressive strength of the connecting device 100 provided in the present application; on the other hand, the first hole 12 is a blind hole, so that the end of the first bar material 40 can abut against the bottom of the first hole 12, thereby increasing the contact area between the first bar material 40 and the first hole 12, and the second hole 22 is a blind hole, so that the second bar material 40 can be pressed against the bottom of the first hole 12. The end of the material 50 can abut the bottom of the second hole 22, thereby increasing the contact area between the second bar material 50 and the second hole 22, and then when the connecting device 100 provided in the present application is subjected to pressure between the first bar material 40 and the second bar material 50, the stress between the first bar material 40 and the connecting device 100 is reduced by increasing the contact area between the first bar material 40 and the first joint 10 and increasing the contact piece between the second bar material 50 and the second joint 20, and the stress between the second bar material 50 and the connecting device 100 is reduced, thereby improving the compressive strength of the connecting device 100 provided in the present application between the first bar material 40 and the second bar material 50.

[0060] In some embodiments of the present application, the first end surface 101 is a flat end surface, and / or the second end surface 201 is a flat end surface.

[0061] Specifically, Figure 2 As shown, the first end surface 101 extends along a plane orthogonal to the x direction in the figure, as shown in FIG. Figure 3 As shown, the second end surface 201 extends along a plane orthogonal to the x direction in the figure.

[0062] Thus, when the first joint 10 and the second joint 20 are abutted along the x direction in the figure, on the one hand, the acting force between the first joint 10 and the second joint 20 extends in a direction perpendicular to the first end face 101 and the second end face 201, thereby avoiding the radial relative slip between the first joint 10 and the second joint 20 due to pressure; on the other hand, when the connecting device 100 provided in the present application is installed, there may be a deviation between the first joint 10 and the second joint 20 in the radial direction of the first joint 10 or the radial direction of the second joint 20. During the process of screwing the sleeve 30 and the second joint 20, the first joint 10 and the second joint 20 may slide relative to each other in the radial direction of the first joint 10 or the radial direction of the second joint 20 to correct the deviation, thereby reducing the requirement for the radial deviation of the first bar 40 and the second bar 50 of the connecting device 100 provided in the present application before installation, thereby making the connecting device 100 provided in the present application have the advantage of being easy to install in actual operation.

[0063] In some embodiments of the present application, the diameter size of any position of the first end surface 101 is larger than the aperture of the first hole 12 , and the diameter size of any position of the second end surface 201 is larger than the aperture of the second hole 22 .

[0064] Specifically, Figure 2 As shown, the diameter of any position of the first end surface 101 is larger than the aperture of the first hole 12, that is, the cross-sectional area of ​​the first end surface 101 is larger than the cross-sectional area of ​​the first bar material 40. Figure 3 As shown, the diameter size of the second end face 201 at any position is larger than the aperture of the second hole 22, that is, the cross-sectional area of ​​the second end face 201 is larger than the cross-sectional area of ​​the second rod 50, so that the compressive strength of the first joint 10 in the x direction in the figure is greater than that of the first rod 40, and the compressive strength of the second joint 20 in the x direction in the figure is greater than that of the second rod 50.

[0065] Therefore, in the process of transmitting pressure between the first bar 40 and the second bar 50, the first bar 40 and the second bar 50 will be destroyed before the connecting device 100 provided in the present application, so that the connecting device 100 can be removed from between the first bar 40 and the second bar 50 after the first bar 40 and the second bar 50 are destroyed.

[0066] In some embodiments of the present application, the diameter of the first end surface 101 is smaller than the diameter of the second end surface 201 .

[0067] Specifically, Figure 5 As shown in (c), the diameter of the first end face 101 is slightly smaller than the diameter of the second end face 201, so that when the first joint 10 and the second joint 20 extend coaxially, the first end face 101 is located inside the contour of the second end face 201.

[0068] Therefore, in the process of connecting the first bar 40 and the second bar 50 by the connecting device 100 provided in the present application, on the one hand, when the sleeve 30 slides over the first annular flange 11 and is screwed into the second joint 20, the diameter of the combination of the first joint 10 and the second joint 20 increases, which facilitates the sleeve 30 to be sleeved on the outer peripheral side of the second joint 20 and screwed into the external thread 21; on the other hand, when the coaxiality of the first bar 40 and the second bar 50 is poor, the first end face 101 is still completely located within the contour of the second section, thereby reducing the requirements for the radial deviation of the first bar 40 and the second bar 50 before installation of the connecting device 100 provided in the present application, thereby making the connecting device 100 provided in the present application have the advantage of being easy to install in actual operation.

[0069] In some embodiments of the present application, the end of the first annular flange 11 away from the first end face 101 forms a first annular end face, and the first annular end face extends in a direction orthogonal to the axial direction of the first joint 10, and the end of the second annular flange 33 toward the first internal thread 32 forms a second annular end face, and the second annular end face extends in a direction orthogonal to the axial direction of the sleeve 30.

[0070] Specifically, Figure 2 As shown, the cross-sectional shape of the first annular flange 11 is rectangular, as shown Figure 4 As shown, the cross-sectional shape of the second annular flange 33 is a rectangle, so that the end faces where the first annular flange 11 and the second annular flange 33 abut against each other extend in a direction orthogonal to the axis of the first joint 10, and the end faces where the second annular flange 33 and the first annular flange 11 abut against each other extend in a direction orthogonal to the axis of the second joint 20.

[0071] Thus, when the first annular flange 11 and the second annular flange 33 abut against each other, the contact area between the first annular flange 11 and the second annular flange 33 can be reduced, and the force between the first annular flange 11 and the second annular flange 33 extends along the axis of the first joint 10 or the axis of the second joint 20.

[0072] The embodiment of the present application further provides a steel bar connection system 1000 , which includes a first steel bar 200 , a second steel bar 300 and a connection device 100 .

[0073] The connection device 100 is a connection device 100 according to any of the above embodiments. One end of the first steel bar 200 can be threadedly connected to the first joint 10 , and one end of the second steel bar 300 can be threadedly connected to the second joint 20 .

[0074] Specifically, Figure 1 As shown, the first steel bar 200 forms the above-mentioned first bar stock 40, and the second steel bar 300 forms the above-mentioned second bar stock 50. The end of the first steel bar 200 can be threadedly assembled in the first hole 12 of the connecting device 100, and the end of the second steel bar 300 can be threadedly assembled in the second hole 22 of the connecting device 100, so that the first steel bar 200 and the second steel bar 300 are axially connected through the connecting device 100.

[0075] The steel bar connection system 1000 provided in the present application connects the first steel bar 200 and the second steel bar 300 along their axial direction through the connection device 100 provided in the present application.

[0076] On the one hand, the connecting device 100 is connected to the first steel bar 200 through the first joint 10, and is connected to the second steel bar 300 through the second joint 20, and then the first steel bar 200 and the second steel bar 300 are connected by rotating the sleeve 30 in such a way as to connect the first joint 10 and the second joint 20, thereby simplifying the operation steps when connecting the first steel bar 200 and the second steel bar 300, and reducing the operating space required for connecting the first steel bar 200 and the second steel bar 300, so as to facilitate the quick and efficient connection of the first steel bar 200 and the second steel bar 300 in a small space, so that the steel bar connection system 1000 provided in the present application has the advantages of small operating space and high connection efficiency.

[0077] On the other hand, the connection device 100 has good axial compressive resistance when connecting the first steel bar 200 and the second steel bar 300 and is not easily damaged by compression, so that the steel bar connection system 1000 provided in the present application has the advantage of high connection strength.

[0078] In some embodiments of the present application, Figure 6 As shown, one end of the first steel bar 200 has a first thread segment 210, and the first thread segment 210 can be screwed together with the second internal thread 13. One end of the second steel bar 300 has a second thread segment (not shown in the figure), and the second thread segment can be screwed together with the third internal thread 23. The bottom diameter size of the first thread segment 210 is greater than or equal to the nominal diameter size of the first steel bar 200, and the bottom diameter size of the second thread segment is greater than or equal to the nominal diameter size of the second steel bar 300.

[0079] Specifically, the first thread segment 210 is formed by the end of the first steel bar 200 through roughing-turning-threading processing, so that the bottom diameter of the first thread segment 210 is larger than the original diameter of the first steel bar 200 at the first thread segment 210, and the second thread segment is formed by the end of the second steel bar 300 through roughing-turning-threading processing, so that the bottom diameter of the second thread segment is larger than the original diameter of the second steel bar 300 at the second thread segment.

[0080] Therefore, the cross-sectional area at any position of the first thread segment 210 is not less than the nominal diameter of the first steel bar 200, so that the strength of the first steel bar 200 at the first thread segment 210 is greater than the strength of the remaining positions of the first steel bar 200. When the first steel bar 200 is subjected to tension, compression, bending or shear, the portion of the first steel bar 200 located outside the first thread segment 210 is damaged before the first thread segment 210, thereby facilitating the removal of the first joint 10 from the first steel bar 200 when the first steel bar 200 is damaged.

[0081] Similarly, the cross-sectional area at any position of the second thread segment is not less than the nominal diameter of the second steel bar 300, so that the strength of the second steel bar 300 at the second thread segment is greater than the strength of the second steel bar 300 at other positions. When the second steel bar 300 is subjected to tension, compression, bending or shear, the portion of the second steel bar 300 located outside the second thread segment is damaged before the second thread segment, thereby facilitating the removal of the second joint 20 from the second steel bar 300 when the second steel bar 300 is damaged.

[0082] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A connection device, characterized in that: include: A first joint, one end of which is suitable for being detachably connected to the end of a bar stock, and the other end of which is provided with a first annular flange, which extends along the outer circumference of the first joint; A second joint, one end of which is adapted to be detachably connected to an end of another bar material, and an outer peripheral side of the second joint is provided with an external thread; A sleeve, wherein a through hole is provided in the sleeve so that the sleeve can be sleeved on the outer circumference of the first joint, a second annular flange is provided at one end of the inner wall of the through hole, and the inner wall of the through hole is also provided with a first internal thread, and the first internal thread can be screwed with the external thread, so that when the first annular flange abuts against the second joint, the first joint and the second joint are connected through the second annular flange.

2. The connection device according to claim 1, characterized in that: A first hole is provided at one end of the first joint, and a second internal thread is provided on the inner wall of the first hole so as to be connected to the end of the rod; a second hole is provided at one end of the second joint, and a third internal thread is provided on the inner wall of the second hole so as to be connected to the end of the rod.

3. The connection device according to claim 2, characterized in that: The external thread and the second internal thread have the same rotation direction, and the second internal thread and the third internal thread have opposite rotation directions.

4. The connection device according to claim 2, characterized in that: The first hole is a blind hole, the end of the first joint facing away from the first hole has a first end face, the second hole is a blind hole, the end of the second joint facing away from the second hole has a second end face, and when the second annular flange abuts against the first annular flange, the first end face is pressed against the second end face.

5. The connection device according to claim 4, characterized in that: The first end surface is a flat end surface, and / or the second end surface is a flat end surface.

6. The connection device according to claim 4, characterized in that: The diameter size of any position of the first end surface is larger than the aperture of the first hole, and the diameter size of any position of the second end surface is larger than the aperture of the second hole.

7. The connection device according to claim 4, characterized in that: The diameter of the first end surface is smaller than the diameter of the second end surface.

8. The connecting device according to any one of claims 4 to 7, characterized in that: The first annular flange forms a first annular end face at one end away from the first end face, and the first annular end face extends in a direction orthogonal to the axial direction of the first joint. The second annular flange forms a second annular end face at one end toward the first internal thread, and the second annular end face extends in a direction orthogonal to the axial direction of the sleeve.

9. A steel bar connection system, characterized in that: It comprises a first steel bar, a second steel bar and a connecting device, wherein the connecting device is a connecting device according to any one of claims 2-8, one end of the first steel bar can be threadedly connected to the first joint, and one end of the second steel bar can be threadedly connected to the second joint.

10. The steel bar connection system according to claim 9, characterized in that: One end of the first steel bar has a first thread segment, which can be screwed together with the second internal thread. One end of the second steel bar has a second thread segment, which can be screwed together with the third internal thread. The bottom diameter of the first thread segment is greater than or equal to the nominal diameter of the first steel bar, and the bottom diameter of the second thread segment is greater than or equal to the nominal diameter of the second steel bar.

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