A push-fit fastening joint and an assembly-type connector

Abstract

This utility model discloses a push-fit fastening joint and an assembled connector, including a male connector module and a female clamp connector module. The male connector module includes a pre-embedded nut, a connecting screw, and a positioning tenon. One end of the connecting screw is threadedly connected to the pre-embedded nut, and the other end is a connecting screw plug that is pressed and locked to the female clamp connector module. The positioning tenon is sleeved in the middle of the connecting screw. The female clamp connector module includes a pre-embedded sleeve and a pre-embedded three-lobed sleeve, with the pre-embedded three-lobed sleeve embedded in the pre-embedded sleeve. This utility model can significantly reduce the weight of the component, optimize the component structure and material composition, facilitate construction positioning, enhance the shear resistance of the connecting screw, and increase the speed of joint assembly.

Description

Technical Field

[0001] This utility model belongs to the field of engineering joint components, specifically relating to a push-fit fastening joint and an assembly-type connector. Background Technology

[0002] The prefabricated tunnel segment circumferential joint connectors disclosed in Chinese patent CN113153358A are mostly designed as bolted connectors or male-female separate socket connectors. The male-female separate socket connectors consist of two components: a male plug and a female clamp.

[0003] Chinese patent CN110748006A discloses a push-fit fastening connector and prefabricated construction component, which achieves automatic guidance and positioning during assembly through elastic clamping components and key pin cooperation. However, the male plug module of this patent uses a long threaded anchor bar at the tail to anchor into the concrete structure, making the overall connector relatively bulky and long, resulting in high material consumption and space occupation, which is not conducive to engineering application and promotion. Chinese patent CN110761417A discloses a push-fit fastening female locking adjustable core connector and prefabricated construction component, which uses an adjustable core connector to connect the male plug and female locking head components, and optimizes the tail of the male plug module into a Y-shaped long threaded anchor bar, shortening the length of the connector and improving the connection firmness between the tail of the male plug and the concrete structure. However, the lack of positioning components at the connection between the male plug and the female clamp of this component increases the difficulty of construction. In addition, the stop valve at the female clamp module of this component requires external pushing force to fix the male plug. If the external force is insufficient or the manufacturing dimensions are deviated, the male plug and the female clamp will not be able to connect effectively, which is difficult to detect during the assembly process and has a low fault tolerance rate. Utility Model Content

[0004] The purpose of this invention is to provide a push-fit fastening joint and a new type of assembled connector, which can significantly reduce the weight of the components, optimize the structural form and material composition of the components, facilitate construction positioning, enhance the shear resistance of the connecting screw, and increase the speed of joint splicing.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A push-fit fastening joint is used to achieve a stable connection between adjacent pipe segments, including a male connector module cast in the mounting hole of one side pipe segment and a female connector module cast in the mounting hole of the other side pipe segment, wherein the positioning tenon has through holes penetrating both ends.

[0006] The male connector module includes a pre-embedded nut, a connecting screw, and a positioning tenon. One end of the connecting screw is threadedly connected to the pre-embedded nut, and the other end is constructed as a connecting screw plug and connected to the female connector module. The positioning tenon is sleeved on the outer periphery of the middle part of the connecting screw.

[0007] The female connector module includes a pre-embedded sleeve and a pre-embedded three-lobed sleeve. The pre-embedded sleeve includes a receiving groove and is composed of three modules of equal size spliced ​​around the same axis along the circumference. The pre-embedded three-lobed sleeve is fitted with a special rubber ring on its outer circumference to make the three modules close to each other. The pre-embedded three-lobed sleeve is inserted into the receiving groove and is in clearance fit with the receiving groove (212). The connecting screw plug passes through the first end of the pre-embedded sleeve and is pressed into the pre-embedded three-lobed sleeve. The annular teeth on the surface are equidistant along the axial direction and are in cooperation with the annular teeth on the inner circumference of the pre-embedded three-lobed sleeve.

[0008] The embedded nut has a groove inside and is clearance-fitted with the connecting screw. The embedded nut has a protrusion at the end away from the positioning tenon. Multiple fins are evenly arranged on the outer wall of the embedded nut along the circumferential and axial directions. The cross section of the fins perpendicular to the embedded nut gradually increases in size along the axial direction of the embedded nut away from the protrusion.

[0009] The outer periphery of the pre-embedded sleeve is constructed as a conical head, with the smaller diameter end facing the outside of the mounting hole of the tube segment. The outer periphery of the pre-embedded three-lobed sleeve is composed of a stepped cylindrical surface and multiple annular grooves formed on the surface of the cylindrical surface. Each annular groove is tightened by a special rubber ring. The diameter of the stepped cylindrical surface increases sequentially from one end embedded in the receiving groove to the other end. The annular teeth arranged equidistantly along the axial direction inside the pre-embedded three-lobed sleeve can be locked and connected with the annular teeth arranged equidistantly along the axial direction of the connecting screw plug.

[0010] The smaller diameter end of the pre-embedded sleeve is provided with a through hole between it and the receiving groove. The through hole is connected to the connecting screw with a clearance fit. When the plug of the connecting screw is pressed into the pre-embedded three-lobed sleeve (22) and clamped, the end face of the positioning tenon and the end face of the pre-embedded sleeve come into contact with each other.

[0011] The materials used for the embedded nuts, positioning tenons, and embedded sleeves are toughened polyamide.

[0012] The larger diameter end of the receiving groove is sealed by a cover plate.

[0013] An assembled connector includes a body, with a male connector module and a female connector module as described in the push-fit fastening connector, respectively provided at opposite ends of the body.

[0014] Beneficial effects: This utility model reduces the weight of the components, optimizes the structural form and material composition of the components, and facilitates construction positioning by setting positioning tenon components, enhances the shear resistance of the connecting screw, and adopts a pre-embedded three-lobed bayonet locking connection screw plug, which facilitates connection, prevents complete connection failure, is easy to use, and has a high fault tolerance rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall assembly of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall assembly structure of this utility model;

[0017] Figure 3 This is an overall axial sectional view of the present invention;

[0018] Figure 4 This is an axial sectional view of the female connector module;

[0019] Figure 5 The main view of the pre-embedded three-lobed bayonet;

[0020] Figure 6 This is an axial sectional view of a three-lobed bayonet. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figures 1-3 As shown, this utility model discloses a push-fit fastening joint comprising a male connector module 1 and a female clamp connector module 2 respectively embedded in the mounting holes at both ends of a pipe segment. During operation, the male connector module 1 of each pipe segment is simply inserted into the female clamp connector module 2 of another pipe segment for locking, allowing for sequential assembly. This utility model reduces component weight, optimizes component structure and material composition, facilitates construction positioning, enhances the shear resistance of the connecting bolts, and increases the joint assembly speed.

[0023] The male connector module 1 includes a pre-embedded nut 11, a connecting screw 12, and a positioning tenon 13. The positioning tenon 13 has through holes at both ends. One end of the connecting screw 12 is threadedly connected to the pre-embedded nut 11, and the other end is constructed as a connecting screw plug 14. The positioning tenon 13 is sleeved on the outside of the middle of the connecting screw 12. The female connector module 2 includes a pre-embedded retaining sleeve 21 and a pre-embedded three-lobed sleeve 22. The pre-embedded retaining sleeve 21 includes a receiving groove 212. The pre-embedded three-lobed sleeve 22 is composed of three modules of equal size spliced ​​around the same axis along the circumference. A special rubber ring is sleeved on the outer circumference of the pre-embedded three-lobed sleeve 22 to bring the three modules close to each other. The pre-embedded three-lobed sleeve 22, which is clamped, transitionally engages with the connecting screw plug 14. The pre-embedded three-lobed sleeve 22 is inserted into the receiving groove 212. The pre-embedded retaining sleeve 21 can be used to constrain and protect the pre-embedded three-lobed sleeve 22. The connecting screw plug 14 passes through the first end of the pre-embedded sleeve 21 and is embedded in the pre-embedded three-lobed sleeve 22. The annular teeth on its surface, evenly spaced axially, engage with the annular teeth on the inner circumference of the pre-embedded three-lobed sleeve 22. This prevents the connecting screw plug 14 from being pulled out of the inner circumference of the pre-embedded three-lobed sleeve 22 towards the pre-embedded nut 11, and allows the connecting screw plug 14 to move towards the opening of the receiving groove 212, causing the pre-embedded three-lobed sleeve 22 to open.

[0024] Furthermore, the pre-embedded nut 11 has an internal thread that engages with the connecting screw 12. The pre-embedded nut 11 has a protrusion 111 at the end away from the positioning tenon. Multiple fins 112 are evenly arranged on the outer wall of the pre-embedded nut 11 along the circumferential and axial directions. The cross-section of the fins 112 perpendicular to the pre-embedded nut gradually increases in size along the axial direction of the pre-embedded nut 11 away from the protrusion. During operation, the pre-embedded nut 11 is pre-embedded into one end of the tube segment.

[0025] The pre-embedded sleeve 21 has a tapered head on its outer periphery, with the smaller diameter end facing the outside of the segment mounting hole. After the pre-embedded three-lobed sleeve 22 is inserted into the pre-embedded sleeve 21, the larger diameter end of the receiving groove 212 is closed by a cover plate 211 to prevent the castable material from entering the pre-embedded three-lobed sleeve 22 during segment casting. The outer periphery of the pre-embedded three-lobed sleeve 22 is composed of a stepped cylindrical surface 221 and multiple annular grooves 222 formed on the surface of the cylindrical surface 221. Each annular groove 222 is tightened by a special rubber ring. The diameter of the stepped cylindrical surface 221 increases sequentially from the end embedded in the receiving groove 212 to the other end. The annular teeth equidistantly arranged along the axial direction inside the pre-embedded three-lobed sleeve 22 can be locked with the annular teeth equidistantly arranged along the axial direction of the connecting screw plug 14. A through hole is provided between the smaller diameter end of the pre-embedded sleeve 21 and the receiving groove 212. The through hole is connected to the connecting screw 12 with a clearance fit. During operation, the connecting screw plug 14 is pressed into the pre-embedded three-lobed sleeve 22 and clamped. At this time, the end face of the positioning tenon 13 is in contact with the end face of the pre-embedded sleeve 21.

[0026] Furthermore, the materials used for the pre-embedded nut 11, positioning tenon 13, and pre-embedded clamp 21 are toughened polyamide, which can significantly reduce the weight of the component and optimize the component's structural form and material composition. This utility model's push-fit fastening connector can be applied to novel assembled connectors. Specifically, the novel assembled connector includes a body, and at opposite ends of the body are respectively provided the male connector module 1 and the female clamp connector module 2 as described above in the push-fit fastening connector.

[0027] While the specific embodiments of this disclosure have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this disclosure. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this disclosure are still within the scope of protection of this disclosure.

Claims

1. A push-to-secure joint for effecting a secure connection between adjacent pipe sections, characterised in that, This includes a male connector module (1) cast into the mounting hole of one side of the tunnel segment and a female clamp connector module (2) cast into the mounting hole of the other side of the tunnel segment, wherein, The male connector module (1) includes a pre-embedded nut (11), a connecting screw (12), and a positioning tenon (13). The positioning tenon (13) has a through hole that passes through both ends. One end of the connecting screw (12) is threadedly connected to the pre-embedded nut (11), and the other end is constructed as a connecting screw plug (14). The positioning tenon (13) is sleeved on the outside of the middle part of the connecting screw (12). The female connector module (2) includes a pre-embedded sleeve (21) and a pre-embedded three-lobed sleeve (22). The pre-embedded sleeve (21) includes a receiving groove (212). The pre-embedded three-lobed sleeve (22) is composed of three modules of equal size spliced ​​around the same axis along the circumference. The pre-embedded three-lobed sleeve (22) is fitted with a rubber ring on its outer circumference to make the three modules close to each other. The pre-embedded three-lobed sleeve (22) is inserted into the receiving groove (212) and is in clearance fit with the receiving groove (212). The connecting screw plug (14) passes through the first end of the pre-embedded sleeve (21) and is pressed into the pre-embedded three-lobed sleeve (22). The annular teeth arranged equidistantly along the axial direction on the surface are in cooperation with the annular teeth arranged equidistantly along the axial direction on the inner circumference of the pre-embedded three-lobed sleeve (22).

2. A push-to-fasten joint according to claim 1, wherein The embedded nut (11) has a groove inside and is clearance-fitted with the connecting screw (12). The embedded nut (11) has a protrusion (111) at the end away from the positioning tenon. Multiple fins (112) are evenly arranged on the outer wall of the embedded nut (11) along the circumferential and axial directions. The cross section of the fins (112) perpendicular to the embedded nut gradually increases in size along the axial direction of the embedded nut (11) away from the protrusion.

3. A push-to-fasten joint according to claim 1, wherein The outer periphery of the pre-embedded sleeve (21) is constructed as a conical head, with the smaller diameter end facing the outside of the mounting hole of the tube segment. The outer periphery of the pre-embedded three-lobed sleeve (22) is composed of a stepped cylindrical surface (221) and multiple annular grooves (222) opened on the surface of the cylindrical surface (221). Each annular groove (222) is tightened by a rubber ring. The diameter of the stepped cylindrical surface (221) increases sequentially from one end to the other end of the embedded receiving groove (212). The annular teeth arranged equidistantly along the axial direction inside the pre-embedded three-lobed sleeve (22) can be locked and connected with the annular teeth arranged equidistantly along the axial direction of the connecting screw plug (14).

4. A push-to-fasten joint according to claim 3, wherein The smaller diameter end of the pre-embedded sleeve (21) is provided with a through hole between it and the receiving groove (212). The through hole is connected to the connecting screw (12) with clearance fit. When the connecting screw plug (14) is pressed into the pre-embedded three-lobed sleeve (22) and clamped, the end face of the positioning tenon (13) and the end face of the pre-embedded sleeve (21) come into contact with each other.

5. A push-to-fasten joint according to claim 1, wherein The materials used for the pre-embedded nut (11), positioning tenon (13) and pre-embedded sleeve (21) are toughened polyamide.

6. A push-to-fasten joint according to claim 1, wherein The larger diameter end of the receiving groove (212) is closed by a cover plate (211).

7. A fabricated connection, characterised in that, The device includes a body, and the opposite ends of the body are respectively provided with the male connector module (1) and the female connector module (2) of the push-fit fastening connector as described in any one of claims 1 to 6.

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