Nut sleeve

Abstract

The utility model discloses a nut sleeve which comprises a nut sleeve body. One end of the nut sleeve body is provided with a main reinforcement connecting part used for being connected with a main reinforcement, the other end of the nut sleeve body is provided with a clamping spring containing groove used for containing a clamping spring, and a clamping face is arranged in the clamping spring containing groove. The clamping spring arranged in the clamping spring containing groove can be opened in the radial direction of the nut sleeve body and clamped on the positioning insertion rod when the positioning insertion rod is inserted into the nut sleeve body, and the positioning insertion rod and the nut sleeve are connected in a clamped mode through the clamping face. The clamping spring containing groove is directly formed in the nut sleeve, so that the clamping spring can be directly installed through the nut sleeve, clamping connection of the positioning inserting rod and the nut sleeve is achieved, and the nut has the advantages of being simple in structure, low in comprehensive cost and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of precast pile connection, in particular to a nut sleeve. Background Art

[0002] In building construction, the docking of precast components is an essential process. In order to achieve the rapid connection of precast components, the prior art generally uses mechanical joints for the connection of precast components. However, the existing mechanical joints have problems such as complex structure and high comprehensive cost. Summary of the Utility Model

[0003] The utility model provides a nut sleeve for solving the above problems.

[0004] The technical means adopted by the utility model are as follows:

[0005] A nut sleeve, comprising: a nut sleeve body;

[0006] One end of the nut sleeve body is provided with a main reinforcement connection part for connecting with the main reinforcement, and the other end is provided with a clamping spring receiving groove for accommodating the clamping spring. A clamping surface is arranged in the clamping spring receiving groove. When the positioning plug is inserted into the nut sleeve body, the clamping spring placed in the clamping spring receiving groove can expand along the radial direction of the nut sleeve body and clamp on the positioning plug, and the positioning plug and the nut sleeve are clamped through the clamping surface.

[0007] Further, the clamping spring receiving groove is one or more annular grooves arranged in the nut sleeve body, and the groove wall surface of the annular groove close to the side where the positioning plug is inserted is the clamping surface.

[0008] Further, the clamping spring receiving groove is a spiral groove arranged in the nut sleeve body, and the groove wall surface of the spiral groove close to the side where the positioning plug is inserted is the clamping surface.

[0009] Further, the clamping surface is an inclined surface.

[0010] Further, a zigzag thread structure is arranged in the nut sleeve body, the groove of the zigzag thread structure is the clamping spring receiving groove, and the non-working side of the zigzag thread structure is the clamping surface.

[0011] Further, the included angle between the non-working side and the working side of the zigzag thread structure is 60°.

[0012] Further, the top of the clamping spring receiving groove is subjected to a diameter expansion treatment to form a groove top surface.

[0013] Further, a relief groove communicating with the root of the serrated thread structure is provided on one side of the nut sleeve body close to the root of the serrated thread structure.

[0014] Further, the pitch of the serrated thread structure is 5 mm - 6 mm.

[0015] Compared with the prior art, the nut sleeve disclosed by the present utility model has the following beneficial effects: in the nut sleeve disclosed by the present utility model, by directly providing a clamping spring accommodating groove in the nut sleeve, the clamping spring can be directly installed through the nut sleeve, so as to realize the clamping of the positioning plug and the nut sleeve, which has the advantages of simple structure and low comprehensive cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a cross-sectional view of the nut sleeve disclosed by the present utility model;

[0017] Figure 2 is a structural diagram of a mechanical joint with the nut sleeve disclosed by the present utility model;

[0018] Figure 3 is a structural diagram of a clamping spring cooperating with the nut sleeve disclosed by the present utility model;

[0019] Figure 4 is a schematic diagram of using a mechanical joint with the nut sleeve disclosed by the present utility model for precast pile connection.

[0020] In the figure: 1, nut sleeve body; 10, main reinforcement connecting part; 11, clamping spring accommodating groove; 12, clamping surface; 13, groove top surface; 14, relief groove; 2, positioning plug; 20, positioning plug seat; 21, plug; 3, small nut sleeve; 4, clamping spring; 50, precast pile body; 51, main reinforcement. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a nut sleeve disclosed by the present utility model includes: a nut sleeve body 1;

[0022] One end of the nut sleeve body 1 is provided with a main reinforcement connecting part 10 for connecting with the main reinforcement 51, and the other end is provided with a clamping spring accommodating groove 11 for accommodating the clamping spring 4. A clamping surface 12 is provided in the clamping spring accommodating groove 11. When the positioning plug 2 is inserted into the nut sleeve body 1, the clamping spring 4 placed in the clamping spring accommodating groove 11 can expand in the radial direction of the nut sleeve body 1 and clamp on the positioning plug 2, and the positioning plug 2 and the nut sleeve are clamped through the clamping surface 12.

[0023] Specifically, in this embodiment, a clamping spring receiving groove 11 is processed on the inner wall of the nut sleeve body 1, and a clamping surface 12 is provided in the clamping spring receiving groove 11. The positioning plug 2 includes a cylindrical positioning plug seat 20, and a cylindrical plug 21 is provided on the positioning plug seat 20. A clamping tooth structure is processed on the outer diameter of the plug 21, and the clamping tooth structure can be clamped with the clamping spring 4. Before the plug 21 of the positioning plug 2 is inserted into the nut sleeve body 1, the clamping spring 4 is placed in the clamping spring receiving groove 11. When the plug 21 is inserted into the nut sleeve body 1, the clamping spring 4 can be clamped in the clamping tooth structure after being opened in the radial direction in the clamping spring receiving groove 11, and the clamping of the positioning plug 2 and the nut sleeve body 1 is realized through the clamping spring 4. By directly arranging the clamping spring receiving groove 11 in the nut sleeve, the clamping spring 4 can be directly installed through the nut sleeve, thereby realizing the clamping of the positioning plug 2 and the nut sleeve, which has the advantages of simple structure and low comprehensive cost.

[0024] Furthermore, the clamping spring accommodating groove 11 is a one-circle or multi-circle annular groove provided in the nut sleeve body 1, and the groove wall surface of the annular groove close to the side where the positioning plug 2 is inserted is the clamping surface 12. The clamping tooth structure of the positioning plug 2 is a one-circle or multi-circle annular clamping tooth provided on the plug 21; the clamping spring 4 is an annular clamping spring.

[0025] Furthermore, the clamping spring accommodating groove 11 is a spiral groove arranged in the nut sleeve body 1, and the groove wall surface of the spiral groove close to the side where the positioning insertion rod 2 is inserted is the clamping surface 12.

[0026] Specifically, in the present application, a spiral groove structure is preferably processed in the nut sleeve body 1 to form a clamping spring accommodating groove 11, a spiral clamping tooth structure is provided on the plug 21 of the positioning plug rod 2, and a spiral clamping spring is used for the clamping spring 4. This structure is not only convenient for processing and installation, but also, due to the use of a spiral structure, the nut sleeve body 1, the positioning plug rod 2 and the clamping spring 4 are subjected to more uniform force in the axial length direction, thereby increasing the service life of the positioning plug rod 2 and the nut sleeve body 1, and improving the pull-out resistance of the pile connection.

[0027] Furthermore, the engaging surface 12 is an inclined surface.

[0028] Furthermore, a sawtooth thread structure is provided in the nut sleeve body 1, the groove of the sawtooth thread structure is a clamping spring receiving groove 11, and the non-working edge of the sawtooth thread structure is a clamping surface 12. The sawtooth thread structure makes the nut sleeve body 1 have a strong strength, thereby improving the pull-out resistance of the pile connection.

[0029] Furthermore, the included angle between the non-working edge and the working edge of the sawtooth thread structure is 60°, so that the nut sleeve body 1, the positioning rod 2 and the clamping spring 4 have better force-bearing performance, thereby improving the pull-out strength.

[0030] Specifically, in this embodiment, the snap spring receiving groove 11 is a single-thread spiral groove. Correspondingly, the spiral tooth structure is a double-thread spiral tooth structure. The pitch of the spiral snap spring is twice the pitch of the spiral tooth structure. The groove pitch of the snap spring receiving groove 11, the pitch of the spiral tooth structure, and the pitch of the spiral snap spring are the same. The groove height of the snap spring receiving groove 11 is twice the cross-sectional height of the spiral snap spring. The groove width of the spiral groove is the same as the cross-sectional width of the spiral snap spring. The height of the spiral tooth structure is the same as the cross-sectional height of the spiral snap spring. The width of the spiral tooth structure is 1 / 2 of the cross-sectional width of the spiral snap spring. After the plug 21 is inserted into any position of the nut sleeve, the spiral snap spring can be clamped in the spiral tooth structure, thereby ensuring that the positioning rod 2 and the nut sleeve can be effectively clamped. At the same time, since the width of the spiral tooth structure is 1 / 2 of the cross-sectional width of the spiral snap spring, when the plug 21, the spiral snap spring, and the nut sleeve are subjected to a tensile force, the acting force is located at the center of the cross-section of the spiral snap spring, thereby improving the stress performance of the spiral snap spring, increasing the strength of the spiral snap spring, and improving the anti-pulling performance of the pile connection.

[0031] Further, the top of the snap spring receiving groove 11 is subjected to a diameter expansion treatment to form a groove top surface 13.

[0032] Specifically, in this embodiment, the diameter expansion treatment in the present application is to process the relatively sharp part of the groove top through a machining method to obtain the groove top surface 13, so as to remove the relatively sharp part of the groove top, that is, to remove the weak part of the groove top; thereby, the positioning rod 2 can be conveniently inserted into the nut sleeve body 1 without causing damage to the snap spring receiving groove 11 or the tooth structure.

[0033] Further, a relief groove 14 communicating with the root of the serrated thread structure is also provided on one side of the nut sleeve body 1 near the root of the serrated thread structure. Due to the provision of the relief groove 14, the tooth bottom depth of the serrated thread in the nut sleeve body 1 can be ensured to be the same, thereby improving the connection performance between the positioning rod 2 and the nut sleeve body 1.

[0034] Further, the pitch of the serrated thread structure is 5 mm - 6 mm, the pitch H1 of the spiral tooth structure of the positioning rod 2 is 2.5 mm - 3 mm, and the pitch of the spiral snap spring is 5 mm - 6 mm. After testing, the strength of the spiral snap spring receiving groove, the spiral tooth structure, and the spiral snap spring after clamping corresponding to the pitch of this set of dimensions is greater than or equal to the requirements for the connection strength of precast piles in relevant standards.

[0035] As Figure 4 shown is a precast pile connection structure using a mechanical joint with the nut sleeve of this embodiment for precast pile connection.

[0036] The two ends of the main reinforcement bars 51 inside the precast pile body 50 are respectively connected to the nut sleeve and the small nut sleeve 3;

[0037] The nut sleeve is connected to the positioning insertion rod 2, and a clamping spring 4 is arranged inside the nut sleeve; the adjacent two sections of precast piles are connected by means of the small nut sleeve 3, the nut sleeve, the positioning insertion rod 2 and the clamping spring 4.

[0038] Specifically, the precast pile includes structures such as a precast pile body 50 and a steel reinforcement cage. The steel reinforcement cage is arranged inside the precast pile body 50; one end of the main reinforcement bar 51 of the steel reinforcement cage passes through the main reinforcement connection part of the small nut sleeve 3 and then is upset to realize the connection between the small nut sleeve 3 and the main reinforcement bar 51; the other end of the main reinforcement bar 51 of the steel reinforcement cage passes through the main reinforcement connection part 10 of the nut sleeve and then is upset to realize the connection between the nut sleeve and the main reinforcement bar 51. In this embodiment, the positioning insertion rod seat of the positioning insertion rod 2 is threadedly connected to the positioning insertion rod connection part of the small nut sleeve 3. When the adjacent two sections of precast concrete piles are connected, one end of the precast concrete pile provided with the positioning insertion rod 2 can be clamped with one end of the adjacent precast concrete pile provided with the nut sleeve through the positioning insertion rod 2, the nut sleeve and the clamping spring 4, so as to realize the connection of the adjacent two sections of precast concrete piles.

[0039] As mentioned above, the above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A nut socket, characterized in that, Comprising: A nut sleeve body (1); One end of the nut sleeve body (1) is provided with a main reinforcement connection part (10) for connecting with the main reinforcement (51), and the other end is provided with a clamping spring receiving groove (11) for receiving the clamping spring (4). A clamping surface (12) is provided in the clamping spring receiving groove (11). When the positioning plug (2) is inserted into the nut sleeve body (1), the clamping spring (4) placed in the clamping spring receiving groove (11) can expand along the radial direction of the nut sleeve body (1) and clamp on the positioning plug (2), and the positioning plug (2) is clamped with the nut sleeve through the clamping surface (12).

2. The nut sleeve according to claim 1, characterized in that: The clamping spring receiving groove (11) is one or more annular grooves provided in the nut sleeve body (1), and the groove wall surface on the side of the annular groove close to the insertion of the positioning plug (2) is the clamping surface (12).

3. The nut sleeve according to claim 1, wherein: The clamping spring receiving groove (11) is a spiral groove provided in the nut sleeve body (1), and the groove wall surface on the side of the spiral groove close to the insertion of the positioning plug (2) is the clamping surface (12).

4. The nut sleeve according to claim 2 or 3, characterized in that: The clamping surface (12) is an inclined surface.

5. The nut sleeve according to claim 3, characterized in that: A serrated thread structure is provided in the nut sleeve body (1), the groove of the serrated thread structure is the clamping spring receiving groove (11), and the non-working side of the serrated thread structure is the clamping surface (12).

6. The nut sleeve according to claim 5, wherein: The included angle between the non-working side and the working side of the serrated thread structure is 60°.

7. The nut sleeve according to claim 5, characterized in that: The top of the clamping spring receiving groove (11) is subjected to a diameter expansion treatment to form a groove top surface (13).

8. The nut sleeve according to claim 5, characterized in that: A relief groove (14) communicating with the root of the serrated thread structure is further provided on one side of the nut sleeve body (1) close to the root of the serrated thread structure.

9. The nut sleeve according to any one of claims 5 to 8, characterized in that: The pitch of the serrated thread structure is 5 mm - 6 mm.

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