Steel bar straight thread sleeve

Abstract

The utility model discloses a steel bar straight thread sleeve, which belongs to the technical field of steel bar connection and comprises a large-caliber threaded sleeve, a sleeve combination structure is arranged in the large-caliber threaded sleeve, and the sleeve combination structure comprises a medium-caliber threaded sleeve, an external thread groove and an internal thread groove. The medium-caliber threaded sleeve is arranged in the large-caliber threaded sleeve in a penetrating mode, an outer threaded groove is formed in the side surface of the medium-caliber threaded sleeve, and an inner threaded groove is formed in the inner wall of the large-caliber threaded sleeve. According to the utility model, through the sleeve combination structure, when construction is carried out in a place, the combination body of the large-caliber threaded sleeve and the medium-caliber threaded sleeve can be flexibly switched and used according to the butt joint application requirements of steel bars with different thickness specifications; and meanwhile, the extension state that the large-caliber threaded sleeve and the medium-caliber threaded sleeve are not completely detached adapts to the application scene that two sections of steel bar straight threaded columns of different thickness types are in butt joint.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel bar connection, and particularly relates to a steel bar straight thread sleeve. Background Art

[0002] The straight thread sleeve is a steel sleeve used for mechanical joints of steel bars to transmit the axial tension or pressure of the steel bars. The connection method of the straight thread sleeve is to use a thread rolling machine to remove a part of the longitudinal ribs and transverse ribs at the end of the steel bar to be connected by cutting, and then directly roll them into ordinary straight threads, and connect them with a special straight thread sleeve to form a steel bar connection.

[0003] However, the straight thread sleeve structure currently used for steel bar connection has an internal thread diameter of fixed size, so it has poor adaptability to straight thread columns of different thicknesses of steel bars rolled on it. Furthermore, if the straight thread column of the steel bar is processed incorrectly, it will be difficult to use the straight thread sleeve for connection. Therefore, a straight thread sleeve for steel bars is needed to solve the problems existing in the existing technology. Utility Model Content

[0004] The purpose of the utility model is to provide a straight thread sleeve for steel bars, so as to solve the problem in the above background technology that the straight thread sleeve has poor adaptability to straight thread columns of different thicknesses rolled on steel bars.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a straight threaded sleeve for steel bars, comprising a large-diameter threaded sleeve, a sleeve combination structure being arranged inside the large-diameter threaded sleeve, the sleeve combination structure comprising a medium-diameter threaded sleeve, an external thread groove and an internal thread groove, the medium-diameter threaded sleeve being passed through the interior of the large-diameter threaded sleeve, the side surface of the medium-diameter threaded sleeve being provided with an external thread groove, the inner wall of the large-diameter threaded sleeve being provided with an internal thread groove, a second small-diameter thread groove being provided through the center of the separating layer of the medium-diameter threaded sleeve, and a protective sleeve being fixed to one end of the medium-diameter threaded sleeve.

[0006] It should be noted in the solution that the internal thread groove of the large-diameter threaded sleeve is threadedly connected to the external thread groove of the medium-diameter threaded sleeve, and one end of the large-diameter threaded sleeve extends out of the port of the protective sleeve.

[0007] It is further worth mentioning that one end surface of the protective sleeve and one end surface of the medium-diameter threaded sleeve are on the same vertical plane, and a protective space is provided between the medium-diameter threaded sleeve and the protective sleeve.

[0008] It should be further explained that the large-diameter threaded sleeve is accommodated in the protective space between the protective sleeve and the medium-diameter threaded sleeve, and a deformation adaptation gap is provided between the large-diameter threaded sleeve and the inner wall of the protective sleeve.

[0009] Preferably, a first thread groove is provided inside the medium-caliber threaded sleeve, and the first thread groove is connected to the second thread groove.

[0010] Preferably, a second anti-slip knob is circumferentially provided at the edge of the side surface of the protective shell, and a first anti-slip knob is circumferentially provided at the edge of the side surface of the large-diameter threaded sleeve.

[0011] Preferably, a through opening is opened at the center of one end surface of the protective shell, and the through opening, the first thread groove, the second thread groove and the internal thread groove are distributed in the same axial direction.

[0012] Compared with the prior art, the utility model provides a steel bar straight thread sleeve, which has at least the following beneficial effects:

[0013] Through the sleeve combination structure, when arriving at the site for construction, the combination of the large-diameter threaded sleeve and the medium-diameter threaded sleeve can be flexibly switched and used according to the application requirements of connecting steel bars of different thicknesses and specifications. At the same time, the extended state of the large-diameter threaded sleeve and the medium-diameter threaded sleeve that is not completely removed is suitable for the application scenario of connecting two sections of straight threaded steel bars of different thicknesses.

[0014] By setting up the medium-diameter threaded sleeve and the protective sleeve, the protective sleeve can play an isolation and protection role around the outside of the medium-diameter threaded sleeve, thereby reducing the trouble of subsequent difficulty in removing the steel bars due to compression deformation of the medium-diameter threaded sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a three-dimensional diagram of the overall structure of a straight threaded steel bar sleeve of the utility model;

[0017] Figure 2 This is a diagram showing the disassembled state of a large-diameter threaded sleeve and a medium-diameter threaded sleeve of a straight threaded sleeve for steel bars of the utility model;

[0018] Figure 3 This is a three-dimensional diagram of the cross-sectional structure of a large-diameter threaded sleeve of a steel bar straight threaded sleeve of the utility model;

[0019] Figure 4 This is a three-dimensional diagram of the cross-sectional structure of a medium-diameter threaded sleeve of a steel bar straight threaded sleeve of the present utility model.

[0020] In the figure: 1. Large-diameter threaded sleeve; 2. Protective sleeve; 3. Medium-diameter threaded sleeve; 4. Protective space; 5. First thread groove; 6. Second thread groove; 7. External thread groove; 8. Internal thread groove; 9. First anti-slip knob; 10. Second anti-slip knob; 11. Through-hole. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the embodiments.

[0022] See also Figure 1-4 The utility model provides a steel bar straight thread sleeve, including a large-diameter threaded sleeve 1, a sleeve combination structure is arranged inside the large-diameter threaded sleeve 1, and the sleeve combination structure includes a medium-diameter threaded sleeve 3, an external thread groove 7 and an internal thread groove 8. The medium-diameter threaded sleeve 3 is arranged inside the large-diameter threaded sleeve 1, and the side surface of the medium-diameter threaded sleeve 3 is provided with an external thread groove 7, and the inner wall of the large-diameter threaded sleeve 1 is provided with an internal thread groove 8. A second small-diameter thread groove 6 is opened through the center of the separation layer of the medium-diameter threaded sleeve 3, and a protective sleeve 2 is fixed to one end of the medium-diameter threaded sleeve 3.

[0023] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth noting that the internal thread groove 8 of the large-diameter threaded sleeve 1 is threadedly connected to the external thread groove 7 of the medium-diameter threaded sleeve 3, and one end of the large-diameter threaded sleeve 1 extends out of the port of the protective sleeve 2.

[0024] Further as Figure 3 As shown, it is worth noting that one end face of the protective sleeve 2 and one end face of the medium-diameter threaded sleeve 3 are on the same vertical plane, and a protective space 4 is provided between the medium-diameter threaded sleeve 3 and the protective sleeve 2.

[0025] This solution has the following working process: when the steel bars are connected, the two sections of steel bars are spirally entered from the through-hole 11 of the protective sleeve 2 and the internal thread groove 8 of the large-diameter threaded sleeve 1 respectively to achieve the purpose of connecting the steel bars. When in use, the protective sleeve 2 is enclosed on the outside of the medium-diameter threaded sleeve 3 to play an isolation and protection role, thereby reducing the trouble of the subsequent difficulty in removing the steel bars due to the compressive deformation of the medium-diameter threaded sleeve 3.

[0026] According to the above working process, the protective sleeve 2 surrounding the outside of the medium-diameter threaded sleeve 3 can play an isolation and protection role, thereby reducing the trouble of subsequent steel bar removal caused by the compression deformation of the medium-diameter threaded sleeve 3.

[0027] Further as Figure 1 、 Figure 2 and Figure 4As shown, it is worth noting that the large-diameter threaded sleeve 1 is accommodated in the protective space 4 between the protective sleeve 2 and the medium-diameter threaded sleeve 3, and a deformation adaptation gap is provided between the large-diameter threaded sleeve 1 and the inner wall of the protective sleeve 2.

[0028] Further as Figure 4 As shown, it is worth mentioning that a first thread groove 5 is provided inside the medium-diameter threaded sleeve 3, and the first thread groove 5 is connected to the second thread groove 6. When in use, the medium-diameter threaded sleeve 3 is used to connect relatively medium-sized steel bar straight threaded columns. After the large-diameter threaded sleeve 1 and the medium-diameter threaded sleeve 3 are removed, they can be used to connect larger-sized steel bar straight threaded columns, and the medium-diameter threaded sleeve 3 is provided with a second thread groove 6 for connecting smaller-sized steel bar straight threaded columns. In this way, the combination of the large-diameter threaded sleeve 1 and the medium-diameter threaded sleeve 3 can be flexibly switched for use according to the application requirements of docking steel bar straight threaded columns of different coarse and fine specifications. At the same time, the extended state of the large-diameter threaded sleeve 1 and the medium-diameter threaded sleeve 3 that is not completely removed is adapted to the application scenario of docking two sections of steel bar straight threaded columns of different coarse and fine types.

[0029] Further as Figure 1 As shown, it is worth noting that a second anti-slip knob 10 is circumferentially provided at the edge of the side surface of the protective sleeve 2, and a first anti-slip knob 9 is circumferentially provided at the edge of the side surface of the large-diameter threaded sleeve 1.

[0030] Further as Figure 1 As shown, it is worth noting that a through hole 11 is opened at the center of one end surface of the protective shell 2, and the through hole 11, the first thread groove 5, the second thread groove 6 and the internal thread groove 8 are distributed in the same axial direction.

[0031] In summary: the protective sleeve 2 surrounding the outside of the medium-diameter threaded sleeve 3 can play an isolation and protection role, thereby reducing the trouble of the subsequent difficulty in removing the steel bars due to the compression deformation of the medium-diameter threaded sleeve 3; when arriving at the site for construction, the combination of the large-diameter threaded sleeve 1 and the medium-diameter threaded sleeve 3 can be flexibly switched and used according to the application requirements of docking straight threaded columns of steel bars of different thicknesses and specifications. At the same time, the incompletely dismantled extended state of the large-diameter threaded sleeve 1 and the medium-diameter threaded sleeve 3 is suitable for the application scenario of docking two sections of straight threaded columns of steel bars of different thicknesses.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steel bar straight threaded sleeve, comprising a large-diameter threaded sleeve (1), characterized in that: The large-diameter threaded sleeve (1) is provided with a sleeve combination structure inside, and the sleeve combination structure includes a medium-diameter threaded sleeve (3), an external thread groove (7) and an internal thread groove (8). The medium-diameter threaded sleeve (3) is inserted into the large-diameter threaded sleeve (1). The side surface of the medium-diameter threaded sleeve (3) is provided with an external thread groove (7). The inner wall of the large-diameter threaded sleeve (1) is provided with an internal thread groove (8). A second thread groove (6) is provided through the center of the separation layer of the medium-diameter threaded sleeve (3). A protective sleeve (2) is fixed to one end of the medium-diameter threaded sleeve (3).

2. The steel bar straight thread sleeve according to claim 1, characterized in that: The internal thread groove (8) of the large-diameter threaded sleeve (1) is threadedly connected to the external thread groove (7) of the medium-diameter threaded sleeve (3), and one end of the large-diameter threaded sleeve (1) extends out of the port of the protective sleeve (2).

3. The steel bar straight thread sleeve according to claim 2, characterized in that: One end face of the protective sleeve (2) and one end face of the medium-diameter threaded sleeve (3) are located on the same vertical plane, and a protective space (4) is provided between the medium-diameter threaded sleeve (3) and the protective sleeve (2).

4. The steel bar straight thread sleeve according to claim 3, characterized in that: The large-diameter threaded sleeve (1) is accommodated in a protective space (4) between a protective sleeve (2) and a medium-diameter threaded sleeve (3), and a deformation adaptation gap is provided between the large-diameter threaded sleeve (1) and the inner wall of the protective sleeve (2).

5. The steel bar straight thread sleeve according to claim 4, characterized in that: A first thread groove (5) is provided inside the medium-caliber threaded sleeve (3), and the first thread groove (5) is communicated with a second thread groove (6).

6. The steel bar straight thread sleeve according to claim 5, characterized in that: A second anti-slip knob (10) is provided at the edge of the side surface of the protective sleeve (2), and a first anti-slip knob (9) is circumferentially provided at the edge of the side surface of the large-diameter threaded sleeve (1).

7. The steel bar straight thread sleeve according to claim 6, characterized in that: A through opening (11) is provided at the center of one end surface of the protective sleeve (2); the through opening (11), the first thread groove (5), the second thread groove (6) and the internal thread groove (8) are distributed along the same axial direction of the large-diameter threaded sleeve (1).

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