Spring clamping nut

Abstract

The utility model discloses a spring clamping nut which comprises a spring clamping nut body. The outer side wall of the spring clamping nut body is provided with an external thread used for being connected with an end plate / large nut sleeve of a precast pile, a clamping spring containing groove used for containing a clamping spring is formed in the spring clamping nut body, and a clamping face is arranged in the clamping spring containing groove. A clamping spring arranged in the clamping spring containing groove can be opened in the radial direction of the spring clamping nut body and clamped on the positioning insertion rod when the positioning insertion rod is inserted into the spring clamping nut body, and the positioning insertion rod and the spring clamping nut are connected in a clamped mode through the clamping face. The spring clamping nut can be installed in an end plate / large nut sleeve, the clamping spring containing groove used for containing the clamping spring is formed in the spring clamping nut body, the positioning inserting rod and the spring clamping nut are connected in a clamped mode through the clamping face, the structure is even in stress, and the performance of pile connection is improved.

Description

Technical Field

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

[0002] In construction, the docking of precast components is an essential process. To achieve the rapid connection of precast components, the prior art generally uses mechanical joints for the connection of precast components. The existing mechanical joints generally include structures such as a large nut, a small nut, a positioning plug, and a spring clip. The positioning plug is provided with a snap projection, and the spring clip is provided with a spring piece structure. The positioning plug can be inserted into the spring clip to realize the snap connection between the spring piece structure and the snap projection, and thus the snap connection between the positioning plug and the spring clip. However, this structure causes the mechanical joint to be stressed concentratedly, is easily damaged, and affects the performance of pile connection. Summary of the Utility Model

[0003] The utility model proposes a spring snap nut for the above problems.

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

[0005] A spring snap nut, comprising: a spring snap nut body;

[0006] The outer side wall of the spring snap nut body is provided with an external thread for connecting with the end plate / large nut sleeve of the precast pile. The spring snap nut body is internally provided with a snap spring accommodation groove for accommodating a snap spring. The snap spring accommodation groove is provided with a snap surface. When the positioning plug is inserted into the spring snap nut body, the snap spring placed in the snap spring accommodation groove can expand in the radial direction of the spring snap nut body and clamp on the positioning plug, and the positioning plug is snapped with the spring snap nut through the snap surface.

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

[0008] Further, the snap spring accommodation groove is a spiral groove provided in the spring snap nut body, and the groove wall surface of the spiral groove close to the side where the positioning plug is inserted is the snap surface.

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

[0010] Further, the spring snap nut body is internally provided with a serrated thread structure, the groove of the serrated thread structure is the snap spring accommodation groove, and the non-working side of the serrated thread structure is the snap surface.

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

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

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

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

[0015] Furthermore, a spring clamping nut tightening structure is provided at one end of the spring clamping nut body close to the insertion of the positioning plug.

[0016] Compared with the prior art, the spring clamping nut disclosed by the present utility model has the following beneficial effects: for the spring clamping nut disclosed by the present utility model, since a clamping spring receiving groove for accommodating a clamping spring is provided in the spring clamping nut body, and the positioning plug is clamped with the spring clamping nut through a clamping surface, the structure has uniform stress and improves the performance of pile connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of the spring clamping nut disclosed by the present utility model;

[0018] Figure 2 is a structural diagram of a mechanical joint having the spring clamping nut disclosed by the present utility model;

[0019] Figure 3 is a structural diagram of a clamping spring cooperating with the spring clamping nut disclosed by the present utility model;

[0020] Figure 4 is a schematic diagram of a first embodiment of precast pile connection using the mechanical joint disclosed by the present utility model;

[0021] Figure 5 is a schematic diagram of a second embodiment of precast pile connection using the mechanical joint disclosed by the present utility model.

[0022] In the figures: 1. Spring clamping nut body; 10. External thread; 11. Clamping spring receiving groove; 12. Clamping surface; 13. Groove top surface; 14. Relief groove; 15. Spring clamping nut tightening structure; 2. Clamping spring; 3. Positioning plug; 4. Large nut sleeve; 5. Small nut sleeve; 6. End plate; 7. Precast pile. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Such as Figure 1 、 Figure 2 、Figure 3 , Figure 4 and Figure 5 As shown in Figure 5 , a spring snap nut disclosed by the present utility model includes: a spring snap nut body 1;

[0024] An external thread 10 for connecting with the end plate 6 / large nut sleeve 4 of the precast pile 7 is provided on the outer side wall of the spring snap nut body 1. A snap spring receiving groove 11 for accommodating the snap spring 2 is provided inside the spring snap nut body 1. A snap surface 12 is provided in the snap spring receiving groove 11. The snap spring 2 placed in the snap spring receiving groove 11 can expand along the radial direction of the spring snap nut body 1 and clamp on the positioning plug 3 when the positioning plug 3 is inserted into the spring snap nut body 1, and the positioning plug 3 is snap-connected with the spring snap nut through the snap surface 12.

[0025] Specifically, in this embodiment, an external thread 10 for connecting with the end plate 6 / large nut sleeve 4 of the precast pile 7 is provided on the outer side wall of the spring snap nut body 1, and a snap spring receiving groove 11 is machined on the inner wall. A snap surface 12 is provided in the snap spring receiving groove 11. The positioning plug 3 includes a cylindrical positioning plug seat, and a cylindrical plug is provided on the positioning plug seat. A tooth structure is machined on the outer diameter of the plug, and the tooth structure can be snap-connected with the snap spring 2.

[0026] As Figure 2 shown, an embodiment of the snap connection between the spring snap nut disclosed by the present utility model and the positioning plug 3 is shown. In this embodiment, a snap spring receiving groove 11 is machined on the inner wall of the spring snap nut body 1. Before the plug of the positioning plug 3 is inserted into the spring snap nut body 1, the snap spring 2 is placed in the snap spring receiving groove 11. In this embodiment, the cross-section of the snap spring 2 is an equilateral triangle. When the plug is inserted into the spring snap nut body 1, the snap spring 2 can expand along the radial direction in the snap spring receiving groove 11 and then clamp in the tooth structure, and the snap connection between the snap spring 2 and the spring snap nut body 1 is realized through the snap surface 12, thereby realizing the snap connection between the positioning plug 3 and the spring snap nut body 1.

[0027] As Figure 4 and Figure 5 shown, the spring snap nut can be connected with the end plate 6 of the precast pile 7 or with the large nut sleeve 4 at one end of the precast pile 7. The positioning plug 3 can be connected with the end plate 6 of the precast pile 7 or with the small nut sleeve 5 at one end of the precast pile 7, and then the connection of the precast pile 7 is realized through this structure. In this embodiment, the spring snap nut is installed in the end plate 6 / large nut sleeve 4, and a snap spring receiving groove 11 for accommodating the snap spring 2 is provided inside the spring snap nut body 1, and the positioning plug 3 is snap-connected with the spring snap nut through the snap surface 12. This structure has uniform stress and improves the performance of pile connection.

[0028] Furthermore, the clamping spring receiving groove 11 is one or more annular grooves provided in the spring clamping nut body 1. The groove wall surface of the annular groove on the side close to the insertion side of the positioning plug 3 is the clamping surface 12. The tooth structure of the positioning plug 3 is one or more annular teeth provided on the plug head; the clamping spring 2 is an annular clamping spring.

[0029] Furthermore, the clamping spring receiving groove 11 is a spiral groove provided in the spring clamping nut body 1. The groove wall surface of the spiral groove on the side close to the insertion side of the positioning plug 3 is the clamping surface 12.

[0030] Specifically, in this application, preferably, a spiral groove structure is machined in the nut sleeve body 1 to form the clamping spring receiving groove 11. A spiral tooth structure is provided on the plug head of the positioning plug 3, and the clamping spring 2 is a spiral clamping spring. This structure is not only convenient for processing and installation, but also, due to the adoption of the spiral structure, the spring clamping nut body 1, the positioning plug 3, and the clamping spring 2 are more evenly stressed in the axial length direction, thereby improving the service life of the spring clamping nut body 1 and the positioning plug 3 and enhancing the anti-pulling performance of the pile connection.

[0031] Furthermore, the clamping surface 12 is an inclined surface.

[0032] Furthermore, a serrated thread structure is provided in the spring clamping nut 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. The adoption of the serrated thread structure makes the spring clamping nut body 1 have strong strength, thereby enhancing the anti-pulling performance of the pile connection.

[0033] Furthermore, the angle between the non-working side and the working side of the serrated thread structure is 60°, so that the spring clamping nut body 1, the clamping spring 2, and the positioning plug 3 have good stress performance, thereby enhancing the anti-pulling strength.

[0034] Specifically, in this embodiment, the clamping 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 clamping spring is twice the tooth pitch of the spiral tooth structure. The groove pitch of the clamping spring receiving groove 11, the pitch of the spiral tooth structure, and the pitch of the spiral clamping spring are the same. The groove height of the clamping spring receiving groove 11 is twice the cross-sectional height of the spiral clamping spring. The groove width of the spiral groove is the same as the cross-sectional width of the spiral clamping spring. The height of the spiral tooth structure is the same as the cross-sectional height of the spiral clamping spring. The width of the spiral tooth structure is 1 / 2 of the cross-sectional width of the spiral clamping spring. After the plug is inserted into any position of the nut sleeve, the spiral clamping spring can be clamped in the spiral tooth structure, so as to ensure that the positioning plug 3 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 clamping spring, when the plug, the spiral clamping spring, and the nut sleeve are subjected to the pulling force, the acting force is located at the center of the cross-section of the spiral clamping spring, thereby improving the stress performance of the spiral clamping spring, increasing the strength of the spiral clamping spring, and improving the anti-pulling performance of the pile connection.

[0035] Further, the top of the clamping spring receiving groove 11 is subjected to a diameter expansion treatment to form a groove top surface 13.

[0036] Specifically, in this embodiment, the diameter expansion treatment in the present application is to process the relatively sharp part of the groove top through machining 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. Thus, the positioning plug 3 can be conveniently inserted into the spring clamping nut body 1 without damaging the clamping spring receiving groove 11 or the tooth structure.

[0037] Further, a relief groove 14 communicating with the root of the serrated thread structure is also provided on one side of the spring clamping nut body 1 close to the root of the serrated thread structure. Due to the provision of the relief groove 14, the bottom depth of the serrated thread in the spring clamping nut body 1 can be ensured to be consistent, thereby improving the connection performance between the spring clamping nut body 1 and the positioning plug 3.

[0038] Further, the tooth pitch of the serrated thread structure is 5 mm - 6 mm, the tooth pitch H1 of the spiral tooth structure of the positioning plug 3 is 2.5 mm - 3 mm, and the pitch of the spiral clamping spring is 5 mm - 6 mm. After testing, the strength of the clamping spring receiving groove 11, the spiral tooth structure, and the spiral clamping spring after clamping corresponding to the tooth pitch of this set of dimensions is greater than or equal to the requirement for the connection strength of the precast pile 7 in the relevant standards.

[0039] Further, a spring clamping nut tightening structure 15 is also provided at one end of the spring clamping nut body 1 close to the insertion of the positioning plug 3.

[0040] Specifically, the spring snap nut tightening structure 15 can be such that one end of the spring snap nut body 1 near the insertion of the plug is provided with a "one"-shaped groove or a polygonal groove structure, so as to facilitate the rapid connection of the spring snap nut by clamping a "one"-shaped screwdriver or a polygonal screwdriver and other structures through a power tool.

[0041] 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 and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A spring clamp nut, characterized in that: include: A spring clamping nut body (1); The outer wall of the spring clamping nut body (1) is provided with an external thread (10) for connecting with the end plate (6) / large nut sleeve (4) of the prefabricated pile (7); the spring clamping nut body (1) is provided with a clamping spring receiving groove (11) for receiving the clamping spring (2); the clamping spring receiving groove (11) is provided with a clamping surface (12); the clamping spring (2) disposed in the clamping spring receiving groove (11) can be opened along the radial direction of the spring clamping nut body (1) and clamped on the positioning rod (3) when the positioning rod (3) is inserted into the spring clamping nut body (1); and the positioning rod (3) is clamped with the spring clamping nut through the clamping surface (12).

2. The spring clamp nut according to claim 1, characterized in that: The clamping spring accommodating groove (11) is a one-circle or multi-circle annular groove arranged in the spring clamping nut body (1), and the groove wall surface of the annular groove close to the side where the positioning plug rod (3) is inserted is the clamping surface (12).

3. The spring clamp nut according to claim 1, characterized in that: The clamping spring accommodating groove (11) is a spiral groove arranged in the spring clamping nut body (1), and the groove wall surface of the spiral groove close to the side where the positioning insertion rod (3) is inserted is the clamping surface (12).

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

5. The spring clamp nut according to claim 3, characterized in that: The spring clamping nut body (1) is provided with a sawtooth thread structure, the groove of the sawtooth thread structure is the clamping spring accommodating groove (11), and the non-working edge of the sawtooth thread structure is the clamping surface (12).

6. The spring clamp nut according to claim 5, characterized in that: The included angle between the non-working edge and the working edge of the sawtooth thread structure is 60°.

7. The spring clamp nut according to claim 6, characterized in that: The groove top of the clamping spring accommodating groove (11) is subjected to a diameter expansion process to form a groove top surface (13).

8. The spring clamp nut according to claim 5, characterized in that: A back-off groove (14) communicating with the root of the sawtooth thread structure is also provided on one side of the spring clamping nut body (1) close to the root of the sawtooth thread structure.

9. The spring clamp nut according to any one of claims 5 to 7, characterized in that: The pitch of the sawtooth thread structure is 5mm-6mm.

10. The spring clamp nut according to claim 1, characterized in that: A spring clamping nut tightening structure (15) is also provided at one end of the spring clamping nut body (1) close to the insertion end of the positioning plug rod (3).

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