Adjustable sleeve assembly for steel bar connection

Abstract

The embodiment of the utility model discloses an adjustable sleeve assembly for steel bar connection. The adjustable sleeve assembly comprises a first sleeve, a second sleeve, an adjustable double nipple, a first lock nut and a second lock nut. The first end of the first sleeve is used for being crimped to a first to-be-connected steel bar, a first internal thread with a set length is machined on the inner wall of the second end of the first sleeve, and the first end and the second end of the first sleeve are two opposite ends in the length direction of the first sleeve; the first end of the second sleeve is used for being connected to a second to-be-connected steel bar in a pressed mode, a second internal thread with the set length is machined on the inner wall of the second end of the second sleeve, the length of the second internal thread is two times larger than that of the first internal thread, and the first end and the second end of the second sleeve are the two opposite ends of the second sleeve in the length direction. An external thread is machined on the periphery of the adjustable double nipple, and the adjustable double nipple is used for being connected between the first internal thread and the second internal thread. The first lock nut is used for being in threaded connection with the adjustable double nipple and locking connection between the adjustable double nipple and the first sleeve; the second lock nut is used for being in threaded connection with the adjustable double nipple and locking connection between the adjustable double nipple and the second sleeve. According to the adjustable sleeve assembly for reinforcing steel bar connection, reinforcing steel bar connection within the adjustable range of the axial distance can be achieved, thread rolling machining is not needed for the ends of the reinforcing steel bars to be connected, and the adjustable sleeve assembly has the beneficial effects of being safe, reliable, convenient and rapid in connection.

Description

Technical Field

[0001] The present application relates to the technical field of steel bar connection, and in particular to an adjustable sleeve assembly for steel bar connection. Background Art

[0002] At present, in the construction process of production fields such as construction and nuclear power, in order to facilitate the transportation of steel bars, multiple steel bars are usually connected together and lengthened for use at the construction site. In the process of steel bar connection or steel bar modular connection, there is a use condition where the axial spacing of the steel bars has a certain adjustable range.

[0003] The main solutions for steel bar connection in related technologies include cone sleeve locking, grouting sleeve, and cold extrusion sleeve, but these sleeves require auxiliary equipment for installation, and the installation space and efficiency are limited; there are also straight thread combination sleeves, which require thread rolling at the end of the steel bar for installation, and the installation efficiency is low, and the thread rolling affects the strength of the steel bar.

[0004] Therefore, a steel bar connecting device is needed which is safe, reliable, quick to connect and does not require steel bar thread rolling. Utility Model Content

[0005] In order to solve at least one of the problems mentioned in the background technology, an embodiment of the present application provides an adjustable sleeve assembly for connecting steel bars, which can realize the connection of steel bars within an adjustable axial spacing range, and the ends of the steel bars to be connected do not require thread rolling processing, and have the characteristics of safe, reliable, convenient and fast connection.

[0006] In order to achieve the above-mentioned object, the embodiment of the present application provides an adjustable sleeve assembly for connecting steel bars, including a first sleeve, a second sleeve, an adjustable thread, a first lock nut, and a second lock nut;

[0007] The first end of the first sleeve is used for crimping to the first steel bar to be connected, the inner wall of the second end of the first sleeve is processed with a first internal thread of a set length, and the first end and the second end of the first sleeve are opposite ends in the length direction of the first sleeve;

[0008] The first end of the second sleeve is used for crimping to the second steel bar to be connected, the inner wall of the second end of the second sleeve is processed with a second internal thread of a set length, the length of the second internal thread is greater than twice the length of the first internal thread, and the first end and the second end of the second sleeve are opposite ends in the length direction of the second sleeve;

[0009] The outer circumference of the adjustable thread is processed with an external thread, and the adjustable thread is used to connect between the first internal thread and the second internal thread;

[0010] The first lock nut is used to be threadedly connected to the adjustable thread and lock the connection between the adjustable thread and the first sleeve;

[0011] The second lock nut is used to be threadedly connected to the adjustable thread and lock the connection between the adjustable thread and the second sleeve.

[0012] In a feasible embodiment, the adjustable thread comprises a first connecting section, an intermediate operating section and a second connecting section which are integrally connected in sequence; the first connecting section is used to connect the first internal thread, the intermediate operating section is provided with a plurality of clamping surfaces along the circumference for facilitating wrench operation, and the second connecting section is used to connect the second internal thread.

[0013] In a feasible implementation, a first detection annular groove is machined between the first connecting section and the intermediate operating section, and a second detection annular groove is machined between the second connecting section and the intermediate operating section.

[0014] In a feasible implementation, the lengths of the first connecting section and the second connecting section are equal, and are both less than or equal to the length of the first internal thread.

[0015] In a feasible implementation, the first sleeve and the second sleeve are both cylindrical in shape.

[0016] In one feasible implementation, the first lock nut and the second lock nut have regular polygonal outer surfaces that facilitate clamping.

[0017] In a feasible implementation, the thread profiles of the first internal thread, the second internal thread and the adjustable thread are all common threads.

[0018] An embodiment of the present application provides an adjustable sleeve assembly for connecting steel bars, including a first sleeve, a second sleeve, an adjustable thread, a first lock nut and a second lock nut. The second end of the first sleeve is processed with a first internal thread, and the second end of the second sleeve is processed with a second internal thread. The distance that the second internal thread exceeds the first internal thread by 2 times is the adjustable range length. When in use, first, the first end of the first steel bar to be connected and the first sleeve, the second steel bar to be connected and the first end of the second sleeve are respectively squeezed and installed by a crimping machine in the background; secondly, the adjustable thread is screwed into the second internal thread of the second sleeve in the background, and the screwing length is the length of the second internal thread; again, the second lock nut and the first lock nut are screwed into the adjustable thread in sequence; then, after the first steel bar to be connected and the second steel bar to be connected are in place, the axial distance between the end face of the first sleeve and the end face of the adjustable thread is greater than or equal to zero, and less than or equal to the adjustable range length, and the adjustable thread is screwed into the first internal thread; finally, tighten the first lock nut to abut the first sleeve, lock the connection between the adjustable thread and the first sleeve, eliminate the thread gap between the adjustable thread and the first sleeve, tighten the second lock nut to abut the second sleeve, lock the connection between the adjustable thread and the second sleeve, and eliminate the thread gap between the adjustable thread and the second sleeve.

[0019] An adjustable sleeve assembly for connecting steel bars in an embodiment of the present application can achieve steel bar connection within an adjustable axial spacing range, and the ends of the steel bars to be connected do not require thread rolling processing, thereby having the characteristics of safe, reliable, convenient and fast connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, 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 some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the structure of a sleeve assembly provided in an embodiment of the present application;

[0022] Figure 2 for Figure 1 A front view of the first sleeve;

[0023] Figure 3 for Figure 2 AA view of the first sleeve;

[0024] Figure 4 for Figure 1 A front view of the second sleeve;

[0025] Figure 5 for Figure 4 BB view of the second sleeve;

[0026] Figure 6 for Figure 1 Schematic diagram of the structure of the adjustable wire pair;

[0027] Figure 7 A schematic diagram of the use process of the sleeve assembly provided in an embodiment of the present application when connecting steel bars;

[0028] Figure 8 A schematic diagram of the use process of the sleeve assembly provided in an embodiment of the present application when connecting a steel bar module.

[0029] Description of reference numerals:

[0030] 100-sleeve assembly;

[0031] 110-first sleeve; 111-first internal thread;

[0032] 120-second sleeve; 121-second internal thread;

[0033] 130-adjustable thread; 131-first connecting section; 1311-first detection annular groove; 132-second connecting section; 1321-second detection annular groove; 133-middle operating section; 1331-clamping surface;

[0034] 140-first lock nut;

[0035] 150-second lock nut;

[0036] 201-the first steel bar to be connected; 202-the second steel bar to be connected. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution in the embodiment of the present application will be described in more detail below in conjunction with the drawings in the embodiment of the present application. It is worth noting that the embodiments described in the drawings are only part of the embodiments of the present application, not all of the embodiments. That is, the embodiments described by the drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application.

[0038] The following will be combined Figure 1-Figure 6 The adjustable sleeve assembly 100 for connecting steel bars provided in an embodiment of the present application is described.

[0039] The present application embodiment provides an adjustable sleeve assembly 100 for connecting steel bars, such as Figure 1-Figure 6 Combined with Figure 7 and Figure 8 As shown, it includes a first sleeve 110, a second sleeve 120, an adjustable thread 130, a first lock nut 140 and a second lock nut 150.

[0040] The first end of the first sleeve 110 is used for crimping to the first steel bar 201 to be connected, and the inner wall of the second end of the first sleeve 110 is processed with a first internal thread 111 of a set length. The first end and the second end of the first sleeve 110 are opposite ends of the length direction of the first sleeve 110.

[0041] The first end of the second sleeve 120 is used to be crimped to the second steel bar 202 to be connected, and the inner wall of the second end of the second sleeve 120 is processed with a second internal thread 121 of a set length. The length of the second internal thread 121 is greater than twice the length of the first internal thread 111. The first end and the second end of the second sleeve 120 are opposite ends in the length direction of the second sleeve 120.

[0042] The outer circumference of the adjustable thread 130 is processed with an external thread, and the adjustable thread 130 is used to connect between the first internal thread 111 and the second internal thread 121 .

[0043] The first lock nut 140 is used to be threadedly connected to the adjustable thread 130 and lock the connection between the adjustable thread 130 and the first sleeve 110 .

[0044] The second lock nut 150 is used to be threadedly connected to the adjustable thread 130 and lock the connection between the adjustable thread 130 and the second sleeve 120 .

[0045] It can be understood that, considering that the first ends of the second sleeve 120 and the first sleeve 110 are both used to press the steel bars to be connected, the length of the internal thread of the second sleeve 120 is greater than the length of the internal thread of the first sleeve 110, and the length of the second sleeve 120 is preferably greater than the length of the first sleeve 110. Among them, the first sleeve 110 can be a standard sleeve, and the length of the first internal thread 111 is the standard internal thread length, and the second sleeve 120 can be a long sleeve.

[0046] When the first steel bar 201 to be connected and the second steel bar 202 to be connected are arranged opposite to each other, the adjustable thread 130 can be first screwed into the second sleeve 120 and extended to a certain length, and then the extended end of the adjustable thread 130 is screwed into the first sleeve 110 by operating the wrench. That is, the length of the adjustable thread 130 includes not only the length of the second internal thread 121, but also a certain operating length, which also serves as a connecting section between the two steel bars to be connected.

[0047] The present application embodiment provides an adjustable sleeve assembly 100 for connecting steel bars, which can be used as follows: Figure 7 The axial spacing of a group of steel bars to be connected has a certain adjustable range m. It can also be applied to the following conditions: Figure 8 The modular steel bar is shown in the working condition that the axial spacing between multiple groups of steel bars to be connected has a certain adjustable range m. When in use, first, the first end of the first steel bar 201 to be connected and the first end of the first sleeve 110, the second steel bar 202 to be connected and the first end of the second sleeve 120 are respectively squeezed and installed by a crimping machine in the background. Secondly, the adjustable thread 130 is screwed into the second internal thread 121 of the second sleeve 120 in the background, and the screwing length is the length of the second internal thread 121. Again, the second lock nut 150 and the first lock nut 140 are screwed into the adjustable thread 130 in sequence. Then, when the first steel bar 201 to be connected and the second steel bar 202 to be connected are in place, the axial distance between the end face of the first sleeve 110 and the end face of the adjustable thread 130 is greater than or equal to zero, and less than or equal to the adjustable range length, and the adjustable thread 130 is screwed into the first internal thread 111 using a wrench. Finally, the first lock nut 140 is tightened to abut against the first sleeve 110, locking the connection between the adjustable thread 130 and the first sleeve 110, and eliminating the thread gap between the adjustable thread 130 and the first sleeve 110. The second lock nut 150 is tightened to abut against the second sleeve 120, locking the connection between the adjustable thread 130 and the second sleeve 120, and eliminating the thread gap between the adjustable thread 130 and the second sleeve 120.

[0048] An adjustable sleeve assembly 100 for connecting steel bars in an embodiment of the present application can achieve connection of steel bars within an adjustable axial spacing range, and the ends of the steel bars to be connected do not require thread rolling processing, and have the characteristics of safe, reliable, convenient and fast connection.

[0049] In one possible implementation, Figure 1 and Figure 6 As shown, the adjustable thread 130 includes a first connecting section 131, an intermediate operating section 133 and a second connecting section 132 which are connected in sequence. The first connecting section 131 is used to connect the first internal thread 111, the intermediate operating section 133 is provided with a plurality of clamping surfaces 1331 along the circumferential direction for convenient wrench operation, and the second connecting section 132 is used to connect the second internal thread 121.

[0050] In this way, the first connecting section 131 realizes the reliable connection between the adjustable thread 130 and the first sleeve 110, the intermediate operating section 133 is combined with a wrench to realize the adjustment operation of the adjustable thread 130, and the second connecting section 132 realizes the reliable connection between the adjustable thread 130 and the second sleeve 120. With the setting of the adjustable thread 130, the connection between the first sleeve 110 and the second sleeve 120 is realized, and then the connection between the first to-be-connected steel bar 201 and the second to-be-connected steel bar 202 is realized.

[0051] In one possible implementation, Figure 1 and Figure 6 As shown, a first detection annular groove 1311 is machined between the first connecting section 131 and the middle operating section 133 , and a second detection annular groove 1321 is machined between the second connecting section 132 and the middle operating section 133 .

[0052] Combination Figure 7 and Figure 8 As shown, whether it is a connection between a group of steel bars to be connected or a modular connection between multiple groups of steel bars to be connected, when in use, when the first connecting section 131 is screwed into the first sleeve 110 and the screwing depth reaches the position of the first detection annular groove 1311, the first connecting section 131 and the first sleeve 110 can be effectively and stably connected. At the same time, the position of the second detection annular groove cannot leak out of the end surface of the second sleeve 120, so that the second connecting section 132 and the second sleeve 120 can also be effectively and stably connected.

[0053] In this way, the connection stability between the adjustable thread 130 and the sleeve can be ensured by means of the detection annular groove.

[0054] In one possible implementation, Figure 1 and Figure 6 As shown, the lengths of the first connecting section 131 and the second connecting section 132 are equal, and are both less than or equal to the length of the first internal thread 111 .

[0055] In this way, both the first connecting section 131 and the second connecting section 132 can ensure stable connection with the corresponding sleeve.

[0056] In one possible implementation, Figure 1-Figure 5 As shown, the first sleeve 110 and the second sleeve 120 are both cylindrical in shape.

[0057] This makes it easier to process the sleeve and also easier to install it by squeezing it between the crimping machine and the steel bars to be connected.

[0058] In one possible implementation, Figure 1 Combined with Figure 7 and Figure 8 As shown, the first lock nut 140 and the second lock nut 150 have regular polygonal outer surfaces that are convenient for clamping.

[0059] In this way, it is convenient for a wrench to operate the second lock nut 150 and the first lock nut 140 to lock the connection between the adjustable thread 130 and the sleeve to prevent slipping.

[0060] In one possible implementation, Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, the thread profiles of the first internal thread 111, the second internal thread 121 and the adjustable thread 130 are all common threads.

[0061] In this way, processing is convenient, and sufficient connecting force can be maintained to ensure a stable connection between the steel bars to be connected.

[0062] It should be noted that, unless otherwise clearly specified and limited, in the description of this application, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] The orientations or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They 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.

[0064] The term "plurality" means two or more than two, unless expressly specified otherwise.

[0065] The terms "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application described herein can include sequential implementations other than those illustrated or described herein.

[0066] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or elements is not necessarily limited to those steps or elements explicitly listed but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An adjustable sleeve assembly for connecting steel bars, characterized in that: It includes a first sleeve, a second sleeve, an adjustable thread, a first lock nut and a second lock nut; The first end of the first sleeve is used for crimping to the first steel bar to be connected, the inner wall of the second end of the first sleeve is processed with a first internal thread of a set length, and the first end and the second end of the first sleeve are opposite ends in the length direction of the first sleeve; The first end of the second sleeve is used for crimping to the second steel bar to be connected, the inner wall of the second end of the second sleeve is processed with a second internal thread of a set length, the length of the second internal thread is greater than twice the length of the first internal thread, and the first end and the second end of the second sleeve are opposite ends in the length direction of the second sleeve; The outer circumference of the adjustable thread is processed with an external thread, and the adjustable thread is used to connect between the first internal thread and the second internal thread; The first lock nut is used to be threadedly connected to the adjustable thread and lock the connection between the adjustable thread and the first sleeve; The second lock nut is used to be threadedly connected to the adjustable thread and lock the connection between the adjustable thread and the second sleeve.

2. The adjustable sleeve assembly for connecting steel bars according to claim 1, characterized in that: The adjustable thread alignment includes a first connecting section, an intermediate operating section and a second connecting section which are integrally connected in sequence; the first connecting section is used to connect the first internal thread, the intermediate operating section is provided with a plurality of clamping surfaces along the circumference for facilitating wrench operation, and the second connecting section is used to connect the second internal thread.

3. The adjustable sleeve assembly for connecting steel bars according to claim 2, characterized in that: A first detection annular groove is machined between the first connecting section and the middle operating section, and a second detection annular groove is machined between the second connecting section and the middle operating section.

4. The adjustable sleeve assembly for connecting steel bars according to claim 2, characterized in that: The lengths of the first connecting section and the second connecting section are equal, and are both less than or equal to the length of the first internal thread.

5. The adjustable sleeve assembly for connecting steel bars according to any one of claims 1 to 4, characterized in that: The first sleeve and the second sleeve are both cylindrical in shape.

6. The adjustable sleeve assembly for connecting steel bars according to any one of claims 1 to 4, characterized in that: The first lock nut and the second lock nut have regular polygonal outer surfaces that are convenient for clamping.

7. The adjustable sleeve assembly for connecting steel bars according to any one of claims 1 to 4, characterized in that: The thread profiles of the first internal thread, the second internal thread and the adjustable thread are all common threads.

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