Self-locking mechanical connecting sleeve

Abstract

The utility model belongs to the technical field of building construction, and discloses a self-locking type mechanical connecting sleeve which is used for connecting a first component and a second component. The self-locking type mechanical connecting sleeve comprises a first sleeve and a second sleeve, one end of the first sleeve is provided with a first connecting part used for being connected with a first component, a clamping groove is formed in the inner wall of the first sleeve, and the first end of the second sleeve is provided with a second connecting part used for being connected with a second component. A plurality of elastic clamping jaws are arranged at the second end of the second sleeve in the circumferential direction at intervals, and the elastic clamping jaws can be inserted into the first sleeve and connected with the first sleeve in a clamped mode through the clamping grooves. When the self-locking type mechanical connecting sleeve is used for connecting the first component and the second component, operation is easy, the construction efficiency is greatly improved, the sleeve connecting mode of inserting and clamping is suitable for simultaneous rapid connection between multiple components, and the application scene is wider.

Description

TECHNICAL FIELD

[0001] The utility model relates to building construction technical field especially relates to a self -locking mechanical connection sleeve. BACKGROUND

[0002] In order to adapt to the building scale and shape requirement and satisfy the building structure integrity demand, usually need to connect reinforcing steel bars, more common reinforcing steel bar connecting mode includes binding connection, welding connection and mechanical connection. Among them, mechanical connection is widely applied because of its high construction efficiency, good process performance, reliable joint quality and not being restricted by weather factors and other advantages.

[0003] The related technology discloses a sleeve for reinforcing steel bar mechanical connection, including first sleeve and second sleeve, first sleeve and second sleeve are fixedly connected at the end of two reinforcing steel bars respectively, first sleeve and second sleeve can be fixedly connected through the mode of threaded connection, and then realize the connection between two reinforcing steel bars.

[0004] However, the first sleeve and the second sleeve of the mechanical connection sleeve in the prior art are fixedly connected through the mode of threaded connection, which is only suitable for separate connection between two reinforcing steel bars, and cannot realize simultaneous and rapid connection of multiple reinforcing steel bars on a reinforcing steel framework and multiple reinforcing steel bars on another reinforcing steel framework, so the construction efficiency is low. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a self -locking mechanical connection sleeve to solve the technical problem of the prior art that the mechanical connection sleeve cannot realize simultaneous and rapid connection of multiple reinforcing steel bars on a reinforcing steel framework and multiple reinforcing steel bars on another reinforcing steel framework, and the construction efficiency is low.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] The self -locking mechanical connection sleeve is used for connecting first component and second component, and comprises:

[0008] The first sleeve is provided with a first connecting part for connecting the first component at one end, and a clamping groove is formed on the inner wall of the first sleeve;

[0009] The second sleeve is provided with a second connecting part for connecting the second component at the first end, and a plurality of elastic clamping claws are arranged at the second end of the second sleeve in the circumferential direction, the elastic clamping claws can be inserted into the first sleeve and clamped with the first sleeve through the clamping groove.

[0010] In an embodiment, the ends of the plurality of elastic clamping claws are provided with protruding parts, the plurality of protruding parts form a ring structure, the outer diameter of the ring structure is greater than the inner diameter of the first sleeve, and the ring structure can be clamped into the clamping groove.

[0011] In an embodiment, the first sleeve is provided with a first inclined guide surface at one end away from the first connecting portion, the first inclined guide surface gradually extends inward in the direction of the first connecting portion, and / or the protruding portion is provided with a second inclined guide surface at one end away from the second connecting portion, the second inclined guide surface gradually extends inward in the direction away from the second connecting portion.

[0012] In an embodiment, a stress release hole is arranged at one end close to the second connecting portion between each two adjacent elastic clamping jaws.

[0013] In an embodiment, an inner thread is arranged on the inner wall of the first connecting portion and / or the inner wall of the second connecting portion.

[0014] In an embodiment, the inner thread is arranged as a trapezoidal thread.

[0015] In an embodiment, the end of the inner thread is provided with a chamfer, and the chamfer angle is 30°-50°.

[0016] In an embodiment, the material of the self-locking mechanical connecting sleeve is spring steel.

[0017] In an embodiment, the outer surface of the first sleeve and the second sleeve is provided with a zinc layer.

[0018] In an embodiment, the outer surface of the first sleeve and the second sleeve is provided with an anti-skid pattern.

[0019] The self-locking mechanical connecting sleeve has the following beneficial effects:

[0020] The self-locking mechanical connecting sleeve is used for connecting a first component and a second component. The self-locking mechanical connecting sleeve comprises a first sleeve and a second sleeve, one end of the first sleeve is provided with a first connecting portion for connecting the first component, an inner wall of the first sleeve is provided with a clamping groove, a first end of the second sleeve is provided with a second connecting portion for connecting the second component, a second end of the second sleeve is provided with a plurality of elastic clamping jaws at intervals in the circumferential direction, the elastic clamping jaws can be inserted into the first sleeve and clamped with the first sleeve through the clamping groove. When the self-locking mechanical connecting sleeve is used for connecting the first component and the second component, after the first sleeve and the second sleeve are respectively fixedly installed at the end portions of the first component and the second component, the elastic clamping jaws of the second sleeve can be inserted into the first sleeve and clamped with the first sleeve through the clamping groove, thereby realizing self-locking of the first sleeve and the second sleeve. The first component fixedly connected with the first sleeve or the second component fixedly connected with the second sleeve does not need to be screwed, and mechanical connection between the first component and the second component can be realized, which is simple in operation and greatly improves the construction efficiency. The sleeve connection mode of insertion and clamping is suitable for simultaneous and rapid connection between a plurality of first components and a plurality of second components, and the application scenario is more extensive. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 is a self-locking mechanical connection sleeve structure schematic diagram of the embodiment of the utility model;

[0022] Fig. 2 is a first sleeve structure schematic diagram of the embodiment of the utility model;

[0023] Fig. 3 is a second sleeve structure schematic diagram of the embodiment of the utility model.

[0024] In the drawings:

[0025] 1, first sleeve;11, first connecting portion;12, clamping groove;2, second sleeve;21, second connecting portion;22, elastic clamping jaw;221, protruding portion;23, stress release hole. DETAILED DESCRIPTION

[0026] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar parts or parts with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation of the utility model.

[0027] In the description of the utility model, unless explicitly defined and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, can be detachably connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] In the description of the utility model, unless explicitly defined and limited, the first feature "on" or "below" the second feature can include that the first feature and the second feature are in direct contact, or the first feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0029] The technical scheme of the utility model is further illustrated below by combining the drawings and through the specific embodiments.

[0030] As Figs. 1-3 shown, the utility model provides a self -locking mechanical connecting sleeve for connecting first component and second component, specifically, first component and second component can be reinforcing steel bar, also can be prestressed steel strand etc. Other components can improve the crack resistance and carrying capacity of concrete structure. Self -locking mechanical connecting sleeve includes first sleeve 1 and second sleeve 2. One end of first sleeve 1 is provided with first connecting part 11 for connecting first component, and the inner wall of first sleeve 1 is provided with clamping groove 12. The first end of second sleeve 2 is provided with second connecting part 21 for connecting second component, and the second end of second sleeve 2 is provided with a plurality of elastic clamping jaw 22 along the circumference interval, and elastic clamping jaw 22 can be inserted into first sleeve 1 and be clamped with first sleeve 1 through clamping groove 12.

[0031] When the self -locking mechanical connecting sleeve is connected to first component and second component, after first sleeve 1 and second sleeve 2 are fixedly installed to the end of first component and second component respectively, the elastic clamping jaw 22 of second sleeve 2 can be inserted into first sleeve 1 and be clamped with first sleeve 1 through clamping groove 12, and then the self -locking of first sleeve 1 and second sleeve 2 is realized, and the mechanical connection between first component and second component can be realized without screwing first component fixedly connected with first sleeve 1 or second component fixedly connected with second sleeve 2, simple operation greatly improves construction efficiency, and the sleeve connecting mode of insertion and clamping is suitable for simultaneous quick connection between multiple first components and multiple second components, and the application scenario is more extensive.

[0032] Further, as Fig. 3 shown, the end of a plurality of elastic clamping jaw 22 is provided with protruding part 221, a plurality of protruding part 221 enclose annular structure, the outer diameter of annular structure is greater than the inner diameter of first sleeve 1, and annular structure can be clamped into clamping groove 12. Since the outer diameter of annular structure enclosed by a plurality of protruding part 221 is greater than the inner diameter of first sleeve 1, and elastic clamping jaw 22 has a certain elasticity along the radial direction of second sleeve 2, when a plurality of elastic clamping jaw 22 contracts along the radial direction of second sleeve 2, annular structure can be inserted into first sleeve 1 and clamped into clamping groove 12. Since the inner diameter of clamping groove 12 is greater than the inner diameter of first sleeve 1, after annular structure is clamped into clamping groove 12, a plurality of elastic clamping jaw 22 expands along the radial direction of second sleeve 2, so that protruding part 221 cannot be separated from clamping groove 12, and then the self -locking of first sleeve 1 and second sleeve 2 is realized.

[0033] Preferably, the first sleeve 1 is provided with a first inclined guide surface at an end away from the first connecting portion 11, which gradually extends inwardly in the direction of the first connecting portion 11. When the second sleeve 2 is inserted into the first sleeve 1, the first inclined guide surface can make the second sleeve 2 enter the first sleeve 1 more smoothly. Especially when the outer diameter of the annular structure formed by the plurality of protruding portions 221 is greater than the inner diameter of the first sleeve 1, the first inclined guide surface can provide the protruding portions 221 with a force of contraction inwardly in the radial direction of the second sleeve 2, so that the outer diameter of the annular structure is reduced, and the second sleeve 2 enters the first sleeve 1 more smoothly. Optionally, the protruding portions 221 are provided with a second inclined guide surface at an end away from the second connecting portion 21, which gradually extends inwardly in the direction away from the second connecting portion 21. The second inclined guide surface can cooperate with the first inclined guide surface to make the process of inserting the second sleeve 2 into the first sleeve 1 more labor-saving. It can be understood that only one of the first inclined guide surface and the second inclined guide surface can be provided.

[0034] Preferably, as shown in Fig. 3 the gap between each two adjacent elastic clamping jaws 22 is provided with a stress release hole 23 at an end close to the second connecting portion 21. The elastic stress generated by the elastic deformation of the elastic clamping jaw 22 can be diffused along the edge of the stress release hole 23, avoiding the concentration of the elastic stress at a certain part of the elastic clamping jaw 22 and causing damage to the structure of the elastic clamping jaw 22.

[0035] In an embodiment, the inner wall of the first connecting portion 11 is provided with an internal thread, and the inner wall of the second connecting portion 21 is also provided with an internal thread. Correspondingly, the end of the first member and the second member is machined with an external thread adapted to the internal thread. The first sleeve 1 and the first member are connected by threads, and the second sleeve 2 and the second member are connected by threads. Compared with the pressure connection between the connecting sleeve and the member, the threaded connection is more firm and the operation is more convenient, which improves the work efficiency. Optionally, the internal thread and the external thread are both trapezoidal threads, which have good self-locking performance and can better resist axial tension to prevent the member from loosening in the first sleeve 1 or the second sleeve 2. Exemplarily, the first connecting portion 11 and the second connecting portion 21 can both be extrusion sleeves, which are fixedly connected with the first member or the second member by cold extrusion of the pressure connection equipment.

[0036] Further, the end of the internal thread is provided with a chamfer, and the angle of the chamfer is 30°-50°. The provision of the chamfer facilitates the screwing of the member with the first connecting portion 11 or the second connecting portion 21, helps to guide the member to smoothly enter the first connecting portion 11 or the second connecting portion 21, and can avoid damaging the external thread of the end of the member during screwing.

[0037] Preferably, the first sleeve 1 and the second sleeve 2 of the self-locking mechanical connection sleeve are made of spring steel with a tensile strength of 1700-2100 MPa, the tensile strength of the first member and the second member is generally about 400 MPa, and the tensile strength of the self-locking mechanical connection sleeve is more than four times the tensile strength of the first member and the second member, thereby sufficiently ensuring the connection strength and construction quality of the first member and the second member.

[0038] Further, the outer surfaces of the first sleeve 1 and the second sleeve 2 are uniformly coated with a zinc layer to form a dense zinc oxide protective film on the outer surfaces of the first sleeve 1 and the second sleeve 2, thereby effectively preventing the erosion of the first sleeve 1 and the second sleeve 2 by oxygen and moisture in the air, and ensuring that the first sleeve 1 and the second sleeve 2 always maintain good structural integrity and stability in long-term construction environment and subsequent use, thereby further improving the quality and durability of the entire construction project.

[0039] Preferably, the outer surfaces of the first sleeve 1 and the second sleeve 2 are provided with anti-skid lines, which can significantly increase the friction between the outer surfaces of the first sleeve 1 and the second sleeve 2 and the hands of workers and various installation tools, thereby effectively preventing the occurrence of errors such as the sliding or displacement of assembly tools, greatly improving the convenience and accuracy of construction operation, and avoiding safety hazards caused by inconvenient operation.

[0040] The use method of the self-locking mechanical connection sleeve for connecting the first member and the second member is as follows: the first sleeve 1 is fixedly connected with the end of the first member through the first connecting part 11, the second sleeve 2 is fixedly connected with the end of the second member through the second connecting part 21, after aligning the second sleeve 2 and the first sleeve 1, the second sleeve 2 is inserted into the first sleeve 1 by using the self-gravity of the second member, and the self-locking of the first sleeve 1 and the second sleeve 2 is realized by using the clamping of the elastic clamping jaw 22 and the clamping groove 12.

[0041] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, other different forms of changes or modifications can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A self-locking mechanical connection sleeve for connecting a first member and a second member, characterized in that, The utility model relates to a self-locking mechanical connection sleeve, which comprises: a first sleeve (1) provided with a first connecting part (11) at one end for connecting a first component, and a clamping groove (12) formed on the inner wall of the first sleeve (1); a second sleeve (2) provided with a second connecting part (21) at the first end for connecting a second component, and a plurality of elastic clamping claws (22) circumferentially and spaced apart from each other at the second end of the second sleeve (2), which can be inserted into the first sleeve (1) and clamped with the first sleeve (1) through the clamping groove (12).

2. The self-locking mechanical connection sleeve according to claim 1, characterized in that The ends of the plurality of elastic clamping claws (22) are provided with protruding parts (221), and the plurality of protruding parts (221) enclose a ring structure, the outer diameter of the ring structure is greater than the inner diameter of the first sleeve (1), and the ring structure can be clamped into the clamping groove (12).

3. Self-locking mechanical connection sleeve according to claim 2, characterized in that The first sleeve (1) is provided with a first inclined guide surface at the end away from the first connecting part (11), which gradually extends inward in the direction of the first connecting part (11), and / or the protruding part (221) is provided with a second inclined guide surface at the end away from the second connecting part (21), which gradually extends inward in the direction away from the second connecting part (21).

4. The self-locking mechanical connection sleeve according to claim 1, characterized in that The gap between every two adjacent elastic clamping claws (22) is provided with a stress relief hole (23) at the end close to the second connecting part (21).

5. The self-locking mechanical connection sleeve according to claim 1, characterized in that, The inner wall of the first connecting part (11) and / or the inner wall of the second connecting part (21) is provided with an internal thread.

6. The self-locking mechanical connection sleeve according to claim 5, characterized in that The internal thread is trapezoidal thread.

7. The self-locking mechanical connection sleeve according to claim 5, characterized in that The end of the internal thread is provided with a chamfer, and the angle of the chamfer is 30°-50°.

8. Self-locking mechanical connection sleeve according to any of claims 1-7, characterized in that, The material of the self-locking mechanical connection sleeve is spring steel.

9. Self-locking mechanical connection sleeve according to any of claims 1-7, characterized in that, The outer surfaces of the first sleeve (1) and the second sleeve (2) are both provided with a zinc layer.

10. Self-locking mechanical connection sleeve according to any of claims 1-7, characterized in that, The outer surfaces of the first sleeve (1) and the second sleeve (2) are both provided with anti-slip patterns.

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