Positioning insertion rod for precast pile connection

Abstract

The utility model discloses a positioning insertion rod for precast pile connection. The positioning insertion rod comprises a positioning insertion rod base provided with external threads and an insertion head arranged on the positioning insertion rod base. And the plug is provided with a spiral latch structure which can be clamped with the spiral clamping spring. According to the positioning insertion rod for precast pile connection, due to the fact that the spiral clamping tooth structure capable of being connected with the spiral clamping spring in the clamping mode is arranged on the insertion head, after the positioning insertion rod of the structure is connected with the spiral clamping spring in the nut sleeve in the clamping mode, the spiral clamping teeth serve as stress parts, and the stress area of the insertion head is increased; therefore, the plug is stressed more uniformly, and the strength of the positioning insertion rod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of precast pile connection, in particular to a positioning insertion rod for precast pile connection. Background Art

[0002] In building construction, the docking of precast components is an essential process. Traditional precast component connections generally adopt two methods. One method is to provide end plates at both ends of the precast components, and the connection of the precast components is realized through welding between the end plates. However, this method has problems such as complex construction process and affecting construction efficiency. Another method is to use mechanical joints for connection. However, the structure of the positioning insertion rod in existing mechanical joints generally includes a positioning insertion rod seat and a plug provided on the positioning insertion rod seat. The plug is provided with a ring-shaped clamping protrusion, and the plug can be inserted into the nut sleeve and clamped with the spring clip structure of the nut sleeve. However, when the existing positioning insertion rod is clamped with the spring clip, the acting force between the spring clip and the plug is concentrated at the clamping protrusion, resulting in concentrated force on the plug, thereby affecting its strength and service life. Summary of the Utility Model

[0003] The utility model provides a positioning insertion rod for precast pile connection to solve the above problems.

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

[0005] A positioning insertion rod for precast pile connection, comprising: a positioning insertion rod seat provided with an external thread and a plug provided on the positioning insertion rod seat;

[0006] The plug is provided with a spiral tooth structure capable of being clamped with a spiral clamping spring.

[0007] Further, the spiral tooth structure is a zigzag tooth thread structure.

[0008] Further, the angle between the non-working surface and the working surface of the zigzag tooth thread structure is 60°.

[0009] Further, the spiral tooth structure is a double-thread spiral tooth structure, and the pitch of the spiral clamping spring is twice the pitch of the spiral tooth structure.

[0010] Further, the pitch of the spiral tooth structure is 2.5 mm - 3 mm.

[0011] Further, the tooth top of the spiral tooth structure is subjected to a diameter reduction treatment to form a tooth top surface.

[0012] Further, the end of the plug is provided with a plug guiding portion.

[0013] Further, the end of the plug is provided with a positioning insertion rod tightening structure.

[0014] Compared with the prior art, the positioning plug rod for precast pile connection disclosed by the utility model has the following beneficial effects: for the positioning plug rod for precast pile connection disclosed by the utility model, since the plug is provided with a spiral tooth structure capable of being clamped with a spiral clamping spring, after the positioning plug rod with this structure is clamped with the spiral clamping spring in the nut sleeve, the spiral teeth serve as the stressed part, thereby increasing the stress area of the plug, making the plug receive force more evenly, and improving the strength of the positioning plug rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural diagram of the positioning plug rod for precast pile connection disclosed by the utility model;

[0016] Figure 2 is a cross-sectional view of the positioning plug rod in the utility model;

[0017] Figure 3 is a structural diagram of a mechanical joint with the positioning plug rod disclosed by the utility model;

[0018] Figure 4 is a schematic diagram of the first embodiment of using the mechanical joint disclosed by the utility model for precast pile connection;

[0019] Figure 5 is a schematic diagram of the second embodiment of using the mechanical joint disclosed by the utility model for precast pile connection;

[0020] Figure 6 is a schematic diagram of the third embodiment of using the mechanical joint disclosed by the utility model for precast pile connection.

[0021] In the figure: 1, positioning plug rod; 10, positioning plug rod seat; 11, plug; 12, spiral tooth structure; 13, tooth top surface; 14, plug guiding part; 15, positioning plug rod tightening structure; 2, spiral clamping spring; 3, spring clamping nut; 30, spiral clamping spring accommodation groove; 4, large nut sleeve; 5, small nut sleeve; 6, end plate; 7, precast pile. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Embodiment 1

[0023] As Figure 1 and Figure 2 shown, the positioning plug rod 1 for precast pile connection disclosed by the utility model includes: a positioning plug rod seat 10 provided with an external thread and a plug 11 arranged on the positioning plug rod seat 10;

[0024] The plug 11 is provided with a spiral tooth structure 12 capable of being clamped with a spiral clamping spring 2.

[0025] Specifically, in this embodiment, the positioning plug 1 includes a cylindrical positioning plug base 10. The outer diameter of the positioning plug base 10 is provided with an external thread for connecting with the end plate / nut sleeve. A cylindrical plug 11 is provided on the positioning plug base 10. A spiral engaging tooth structure 12 is machined on the outer diameter of the plug 11. The spiral engaging tooth structure 12 can be engaged with the spiral engaging spring 2, and thus the positioning plug 1 can be engaged with the spring-engaging nut 3 or the nut sleeve 4 through the spiral engaging spring 2.

[0026] As Figure 3 shown is an embodiment of the engagement between the positioning plug disclosed by the present utility model and the spring-engaging nut 3. In this embodiment, a spiral engaging spring receiving groove 30 is provided inside the spring-engaging nut 3. Before the plug 11 of the positioning plug 1 is inserted into the spring-engaging nut 3, the spiral engaging spring 2 is placed in the spiral engaging spring receiving groove 30. In this embodiment, the cross-section of the spiral engaging spring is an equilateral triangle. When the plug 11 is inserted into the spring-engaging nut 3, the spiral engaging spring 3 can expand radially in the engaging spring receiving groove 30 and then clamp in the spiral engaging tooth structure 12, and the engagement between the positioning plug 1 and the spring-engaging nut 3 is achieved through the spiral engaging spring 2. As Figure 4 and Figure 5 shown, the positioning plug 1 can be connected to the end plate of the precast pile or to the small nut sleeve 5 at one end of the precast pile. The spring-engaging nut 3 can be connected to the end plate 6 of the precast pile 7 or to the large nut sleeve 4 at one end of the precast pile 7, and thus the connection of the precast pile 7 is achieved through this structure. In this embodiment, due to the provision of the spiral engaging tooth structure on the positioning plug and the engagement with the spring-engaging nut through the spiral engaging spring, the spiral structure increases the acting area of the plug, the engaging spring, and the spring-engaging nut, making the force on the plug more uniform and improving the strength of the positioning plug.

[0027] As Figure 6 shown is another embodiment of the engagement between the positioning plug disclosed by the present utility model and the spring-engaging nut 3. In this embodiment, a spiral engaging spring receiving groove 30 is provided inside the large nut sleeve 4. Before the plug 11 of the positioning plug 1 is inserted into the large nut sleeve 4, the spiral engaging spring 2 is placed in the spiral engaging spring receiving groove 40. When the plug 11 is inserted into the large nut sleeve 4, the spiral engaging spring 3 can expand radially in the spiral engaging spring receiving groove 30 and then clamp in the spiral engaging tooth structure 12, and the engagement between the positioning plug 1 and the large nut sleeve 4 is achieved through the spiral engaging spring 2. In this embodiment, due to the provision of the spiral engaging tooth structure on the positioning plug and the engagement with the large nut sleeve through the spiral engaging spring, the spiral structure increases the acting area of the plug, the spiral engaging spring, and the large nut sleeve, making the force on the plug more uniform and improving the strength of the positioning plug.

[0028] Furthermore, the spiral engaging teeth structure 12 is a serrated thread structure. The use of a serrated thread structure enables both the engaging parts of the spring snap nut and the plug to have relatively high strength, thereby improving the anti-pulling performance of the pile connection.

[0029] Furthermore, the angle between the non-working surface and the working surface of the serrated thread structure is 60°, which enables better force-bearing performance among the positioning plug rod, the spiral snap spring, and the spring snap nut / large nut sleeve, thereby enhancing the anti-pulling strength.

[0030] Furthermore, the spiral engaging teeth structure 12 is a double-thread spiral engaging teeth structure, and the pitch of the spiral snap spring 2 is twice the pitch of the spiral engaging teeth structure 12.

[0031] Specifically, in this embodiment, the spiral engaging teeth structure 12 is a double-thread spiral engaging teeth structure, and the pitch of the spiral snap spring 2 is twice the pitch of the spiral engaging teeth structure 12. Correspondingly, the spiral snap spring receiving groove is a single-thread spiral groove. The groove pitch of the spiral snap spring receiving groove, the pitch of the spiral engaging teeth, and the pitch of the spiral snap spring are the same. The groove height of the spiral snap spring receiving groove 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 engaging teeth is the same as the cross-sectional height of the spiral snap spring. The width of the spiral engaging teeth is 1 / 2 of the cross-sectional width of the spiral snap spring. After the plug is inserted into any position of the spring snap nut, the spiral snap spring can be clamped in the spiral engaging teeth, thereby ensuring the effective engagement between the positioning plug rod and the spring snap nut. At the same time, since the width of the spiral engaging teeth is 1 / 2 of the cross-sectional width of the spiral snap spring, when the plug, the spiral snap spring, and the spring snap nut 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 force-bearing performance of the spiral snap spring, enhancing the strength of the spiral snap spring, and improving the anti-pulling performance of the pile connection.

[0032] Furthermore, the pitch H1 of the spiral engaging teeth structure 12 is 2.5 mm - 3 mm.

[0033] Specifically, the pitch H1 of the spiral engaging teeth structure 12 is 2.5 mm - 3 mm. After testing, the strength of the engaging teeth corresponding to this pitch, the spiral snap spring receiving groove corresponding to the groove pitch, and the spiral snap spring after engagement is greater than or equal to the requirements for the connection strength of precast piles in relevant standards. In this embodiment, since the spiral engaging teeth structure is a double-thread spiral engaging teeth structure, its pitch P1 is 5 mm - 6 mm.

[0034] Furthermore, the tooth top of the spiral engaging teeth structure 12 is subjected to a diameter reduction treatment to form a tooth top surface 13.

[0035] Specifically, in this embodiment, since the tooth top of the spiral engaging tooth structure 12 is subjected to a diameter reduction treatment to form a tooth top surface 13, the diameter reduction treatment in this application is to process the relatively sharp part of the tooth top through machining to obtain the tooth top surface, so as to remove the relatively sharp part of the tooth tip top, that is, to remove the weak part of the tooth tip top; thus, it is convenient to insert the positioning rod into the spring snap nut without damaging the spiral engaging tooth structure or the snap spring receiving groove.

[0036] Furthermore, a plug guiding portion 14 is provided at the end of the plug 11.

[0037] Specifically, the end of the plug can be an inclined surface or a smooth curved surface so that the diameter at the end face of the plug is the smallest and gradually increases to be the same as the diameter of the engaging portion of the plug, thereby forming the plug guiding portion, enabling the end of the plug to be conveniently inserted into the spiral snap spring during the insertion of the plug into the spring snap nut and causing the spiral snap spring to radially expand.

[0038] Furthermore, a positioning rod tightening structure 15 is provided at the end of the plug 11.

[0039] Specifically, a polygonal hole is provided at the end of the plug, and the positioning rod can be quickly connected to the tensioning and anchoring hole or the small nut sleeve on the end plate by clamping a polygonal screwdriver with a power tool.

[0040] 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 positioning insertion rod for precast pile connection, characterized in that Comprising: A positioning plug base (10) provided with an external thread and a plug (11) arranged on the positioning plug base (10); The plug (11) is provided with a spiral engaging tooth structure (12) capable of engaging with a spiral engaging spring (2).

2. The positioning insertion rod for precast pile connection according to claim 1, wherein: The spiral engaging tooth structure (12) is a serrated thread structure.

3. The positioning insertion rod for precast pile connection according to claim 2, characterized in that: The included angle between the non-working surface and the working surface of the serrated thread structure is 60°.

4. The positioning insertion rod for precast pile connection according to claim 3, characterized in that: The spiral engaging tooth structure (12) is a double-thread spiral engaging tooth structure, and the pitch of the spiral engaging spring is twice the pitch of the teeth of the spiral engaging tooth structure.

5. The positioning insertion rod for precast pile connection according to claim 4, characterized in that: The pitch of the teeth of the spiral engaging tooth structure (12) is 2.5 mm - 3 mm.

6. The positioning insertion rod for precast pile connection according to claim 5, characterized in that: The tooth top of the spiral engaging tooth structure (12) is subjected to a necking treatment to form a tooth top surface (13).

7. The positioning insertion rod for precast pile connection according to any one of claims 1 to 6, characterized in that: The end of the plug (11) is provided with a plug guiding portion (14).

8. The positioning insertion rod for precast pile connection according to claim 7, characterized in that: The end of the plug (11) is provided with a positioning plug tightening structure (15).

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