A pipe beam connection joint

Abstract

The present invention belongs to the technical field of pipe-beam joints, and discloses a pipe-beam connection joint, which includes multiple joints, the joint includes a base, an end pipe, a screw and a top core, the end pipe is fixedly connected to the base, the base is provided with a threaded hole, the screw is screwed in the threaded hole, the end pipe is provided with multiple openings, the openings are arranged at intervals along the circumference of the end pipe, the top core is slidably arranged in the end pipe and the base, the end pipe is provided with a protrusion, the top core abuts against the protrusion, the screw is configured to be able to push the top core to slide and squeeze the protrusion to expand the end pipe, and multiple bases are fixedly connected. The pipe-beam connection joint can be conveniently and quickly installed and disassembled with the pipe beam, and has high matching accuracy and high strength with the pipe beam.

Description

Technical Field

[0001] The invention relates to the technical field of pipe-beam joints, and in particular to a pipe-beam connecting joint. Background Art

[0002] The tubular beam has a simple structure and reliable strength. It is one of the commonly used materials in automobile manufacturing. In the process of manufacturing the body structure, multiple tubular beams need to be connected. At present, the connection of multiple tubular beams is mostly achieved by welding or connecting with ordinary joints and then fixing with screws. However, after the multiple tubular beams are fixed by welding, they cannot be disassembled and reassembled, and it is time-consuming and labor-intensive. After multiple tubular beams are connected by ordinary 2-way, 3-way or 4-way joints, the tubular beams and ordinary joints are screwed together to fix them. In this way, the connection accuracy and strength of the tubular beams and ordinary joints are low, and tooling fixtures are required for positioning during assembly, which is inefficient. Summary of the invention

[0003] The object of the present invention is to provide a pipe beam connecting joint, which can be conveniently and quickly installed and disassembled with the pipe beam, and has high matching accuracy and high strength with the pipe beam.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A pipe beam connection joint, comprising:

[0006] A plurality of joints, the joints comprising a base, an end tube, a screw and a top core, the end tube being fixedly connected to the base, the base being provided with a threaded hole, the screw being screwed into the threaded hole, the end tube being provided with a plurality of openings, the openings being arranged at intervals along the circumference of the end tube, the top core being slidably arranged in the end tube and the base, the end tube being provided with a protrusion, the top core being in contact with the protrusion, and the screw being configured to be able to push the top core to slide and squeeze the protrusion to expand the end tube;

[0007] The plurality of bases are all fixedly connected.

[0008] As a preferred technical solution of the above-mentioned pipe-beam connection joint, the top core includes a top block and a top rod fixedly connected to the top block, the top block abuts against the protrusion, and the top block is conical.

[0009] As a preferred technical solution for the above-mentioned pipe-beam connection joint, one end of the push rod is configured to be conical.

[0010] As a preferred technical solution of the above-mentioned tube-beam connection joint, there are multiple protrusions, and the multiple protrusions are arranged at intervals along the circumference of the end tube.

[0011] As a preferred technical solution of the above-mentioned tubular beam connection joint, the protrusion is an annular protrusion.

[0012] As a preferred technical solution of the above-mentioned tubular beam connection joint, the cross-section of the protrusion is arc-shaped.

[0013] As a preferred technical solution of the above-mentioned pipe-beam connecting joint, the extending direction of the threaded hole is arranged perpendicular to the sliding direction of the top core.

[0014] As a preferred technical solution for the above-mentioned pipe-beam connection joint, the base is provided with a finite surface.

[0015] As a preferred technical solution for the above-mentioned pipe-beam connection joint, the outer surface of the end pipe is provided with anti-slip grooves.

[0016] As a preferred technical solution for the above-mentioned pipe-beam connecting joint, a plurality of the joints are an integrally formed structure.

[0017] Beneficial effects of the present invention: The present invention provides a pipe-beam connection joint, which includes multiple joints, the joints include a base, an end pipe, a screw and a top core, multiple bases are fixedly connected, each joint can be fixedly connected to a pipe beam, and the bases of multiple joints are fixedly connected together, so that multiple pipe beams can be fixedly connected. The end pipe is used to plug into the pipe beam, the end pipe is fixedly connected to the base, the base is provided with a threaded hole, the screw is screwed into the threaded hole, the top core is slidably provided in the end pipe and the base, the inner wall of the end pipe is provided with a protrusion, one end of the top core abuts against the protrusion, and the other end abuts against the screw, and the screw continues to rotate after abutting against the top core to push the top core to slide in the end pipe and squeeze the protrusion, and multiple openings are provided at intervals along the circumference of the end pipe so that the rear end tube will be expanded after the top core squeezes the protrusion. When the pipe-beam connection joint is assembled with the pipe-beam, the pipe-beam is sleeved on the end pipe, and the screw is turned to make the screw push the top core to slide. When the top core slides, it squeezes the protrusion on the inner wall of the end pipe. Since the end pipe is provided with multiple openings, the end pipe will be expanded when the top core squeezes the protrusion, that is, the diameter of the end pipe becomes larger. After the end pipe is expanded, it will squeeze the pipe-beam until the end pipe and the pipe-beam are tightly connected, and the screw is stopped from being turned. The end pipe and the pipe-beam are fixedly connected by positioning-free and interference fit, with accurate positioning and high connection precision. Installation and disassembly can be carried out by turning the screw, which is efficient, time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a cross-sectional view of a pipe beam connection joint provided by a specific embodiment of the present invention;

[0019] Figure 2 It is a structural schematic diagram of a pipe beam connection joint provided by a specific embodiment of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the cooperation between the pipe beam connection joint and the pipe beam provided by a specific embodiment of the present invention.

[0021] In the figure:

[0022] 1. Base; 11. Limiting surface;

[0023] 2. end tube; 21. opening; 22. annular protrusion;

[0024] 3. Screws;

[0025] 4. top core; 41. top block; 42. top rod;

[0026] 5. Tube beam. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] At present, multiple pipe beams are mostly connected by welding or connecting with ordinary joints and then fixing with screws. However, after the multiple pipe beams are fixed by welding, they cannot be disassembled and reassembled, and it is time-consuming and labor-intensive. After multiple pipe beams are connected by ordinary 2-way, 3-way or 4-way joints, the pipe beams and the ordinary joints are screwed together to fix them. In this way, the connection accuracy and strength of the pipe beams and the ordinary joints are low, and tooling fixtures are required for positioning during assembly, which is inefficient.

[0032] In this regard, the present invention provides a pipe-beam connecting joint, which pushes the top core to slide in the end tube by rotating the screw. When the top core slides, it will squeeze the protrusion on the inner wall of the end tube, thereby expanding the end tube. The end tube is used to be inserted into the pipe beam. The end tube and the pipe beam are surface-positioned and fixedly connected by interference fit. The pipe-beam connecting joint can be easily and quickly installed and disassembled with the pipe beam, and has high matching accuracy and high strength with the pipe beam.

[0033] like Figure 1-3 As shown, the pipe-beam connection joint includes a plurality of joints, the joint includes a base 1, an end pipe 2, a screw 3 and a top core 4, a plurality of bases 1 are fixedly connected, each joint can be fixedly connected to a pipe beam 5, and the bases 1 of the plurality of joints are fixedly connected together, so that a plurality of pipe beams 5 can be fixedly connected. The end pipe 2 is used to insert the pipe beam 5, the end pipe 2 is fixedly connected to the base 1, the base 1 is provided with a threaded hole, the screw 3 is screwed in the threaded hole, the top core 4 is slidably arranged in the end pipe 2 and the base 1, the inner wall of the end pipe 2 is provided with a protrusion, one end of the top core 4 abuts against the protrusion, and the other end abuts against the screw 3, the screw 3 is configured to be able to push the top core 4 to slide and squeeze the protrusion to expand the end pipe 2, and the screw 3 continues to rotate after abutting against the top core 4 to push the top core 4 to slide in the end pipe 2 and squeeze the protrusion, and a plurality of openings 21 are arranged at intervals along the circumference of the end pipe 2, so that the rear end of the pipe 2 will be expanded after the top core 4 squeezes the protrusion. Preferably, the end pipe 2 and the pipe beam 5 have the same shape. This embodiment exemplarily gives an example in which the cross-sections of the pipe beam 5 and the end pipe 2 are both circular. When the pipe beam connection joint is assembled with the pipe beam 5, the pipe beam 5 is sleeved on the end pipe 2, and the screw 3 is turned so that the screw 3 pushes the top core 4 to slide. When the top core 4 slides, it squeezes the protrusions on the inner wall of the end pipe 2. Since the end pipe 2 is provided with a plurality of openings 21, the end pipe 2 will be expanded when the top core 4 squeezes the protrusions, that is, the diameter of the end pipe 2 becomes larger. After the end pipe 2 is expanded, it will squeeze the pipe beam 5 until the end pipe 2 and the pipe beam 5 are tightly connected, and the screw 3 is stopped from being turned. The end pipe 2 and the pipe beam 5 are fixedly connected by surface positioning and interference fit, with accurate positioning and high connection precision. The installation and disassembly can be carried out by turning the screw 3, which is efficient and saves time and effort.

[0034] Optionally, the number of joints is designed according to actual needs, and the angles between multiple joints are also designed according to actual needs. For example, the number of joints can be 2, 3, 4, or 5, etc., which are correspondingly used to simultaneously connect and fix 2, 3, 4, or 5 pipe beams 5, and the angle between two adjacent joints can be 72°, 90°, or 120°, etc. This embodiment exemplarily provides an example in which there are 2 joints and the angle between the 2 joints is 90°.

[0035] Optionally, there are multiple protrusions, and the multiple protrusions are arranged at intervals along the circumference of the end tube 2. The multiple protrusions are located on the same circumference of the end tube 2, and the top core 4 can squeeze the multiple protrusions at the same time, so that the end tube 2 is uniformly enlarged along the circumferential direction, so that the outer surface of the end tube 2 along the circumferential direction fits the inner surface of the pipe beam 5 to the same degree, thereby improving the positioning accuracy and connection accuracy of the pipe beam connection joint and the pipe beam 5.

[0036] Furthermore, multiple protrusions are located on the same circumference and connected to each other to form an annular protrusion 22. In this embodiment, providing an annular protrusion 22 on the inner wall of the end tube 2 can also achieve the purpose of improving the positioning accuracy and connection accuracy of the pipe-beam connection joint and the pipe beam 5.

[0037] Optionally, the cross section of the protrusion is set to be arc-shaped, so that when the top core 4 squeezes the protrusion, the end tube 2 is gradually expanded, which is more conducive to controlling the tightness between the end tube 2 and the tube beam 5.

[0038] Optionally, the top core 4 includes a top block 41 and a top rod 42 fixedly connected to the top block 41, the top block 41 abuts against the protrusion, and the top block 41 is conical. When the conical top block 41 squeezes the protrusion, the end tube 2 can gradually become larger, which is convenient for controlling the speed and degree of the end tube 2 becoming larger, and is conducive to controlling the tightness between the end tube 2 and the pipe beam 5.

[0039] Optionally, the extending direction of the threaded hole is perpendicular to the sliding direction of the top core 4. Figure 2 As shown, this embodiment is provided with two joints, and the two joints are arranged vertically. If the extension direction of the threaded hole is parallel to the sliding direction of the top core 4, the screws 3 of the two joints will interfere with each other, and after one joint is assembled with the pipe beam 5, the other joint cannot be assembled with the pipe beam 5. Therefore, the extension direction of the threaded hole is arranged vertically with the sliding direction of the top core 4, so that after one joint is assembled with the pipe beam 5, the assembly of the other joints with the pipe beam 5 will not be affected.

[0040] Optionally, one end of the push rod 42 is set to be conical. One end of the push rod 42 is set to be conical and abuts against the screw 3. The push rod 42 and the screw 3 are arranged vertically, and the screw 3 abuts on the conical surface, so that the screw 3 can push the top core 4 to move.

[0041] Optionally, the base 1 is provided with a limiting surface 11. The limiting surface 11 is perpendicular to the insertion direction of the end tube 2, and the end tube 2 is inserted into the pipe beam 5 until the pipe beam 5 abuts against the limiting surface 11 and stops. The limiting surface 11 is used to limit the pipe beam 5.

[0042] Optionally, the outer surface of the end tube 2 is provided with anti-skid patterns. Providing anti-skid patterns on the outer surface of the end tube 2 can increase the friction between the outer surface of the end tube 2 and the inner surface of the tube beam 5, so that the fixing effect between the end tube 2 and the tube beam 5 is better.

[0043] Optionally, the plurality of joints are integrally formed structures. The plurality of joints can be integrally formed by casting, which can make the pipe-beam connection joint have high strength, greater load-bearing capacity, low mold cost and convenient processing.

[0044] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pipe beam connection joint, characterized in that: include: A plurality of joints, the joints comprising a base (1), an end tube (2), a screw (3) and a top core (4), the end tube (2) being fixedly connected to the base (1), the base (1) being provided with a threaded hole, the screw (3) being screwed into the threaded hole, the end tube (2) being provided with a plurality of openings (21), the openings (21) being arranged at intervals along the circumference of the end tube (2), the top core (4) being slidably arranged in the end tube (2) and the base (1), the end tube (2) being provided with a protrusion, the top core (4) being in contact with the protrusion, the screw (3) being configured to be able to push the top core (4) to slide and squeeze the protrusion to expand the end tube (2); The plurality of bases (1) of the end pipe are all fixedly connected; The top core (4) comprises a top block (41) and a top rod (42) fixedly connected to the top block (41); the top block (41) abuts against the protrusion; and the top block (41) is conical; One end of the push rod (42) is configured to be conical, and the end of the push rod (42) configured to be conical abuts against the screw (3). The push rod (42) and the screw (3) are arranged perpendicularly, and the screw (3) abuts against the conical surface. The extending direction of the threaded hole is arranged perpendicular to the sliding direction of the top core (4).

2. The pipe beam connection joint according to claim 1, characterized in that: There are multiple protrusions, and the multiple protrusions are arranged at intervals along the circumference of the end tube (2).

3. The pipe beam connection joint according to claim 1, characterized in that: The protrusion is an annular protrusion (22).

4. The pipe beam connection joint according to claim 1, characterized in that: The cross section of the protrusion is arc-shaped.

5. The tubular beam connection joint according to any one of claims 1 to 4, characterized in that: The base (1) is provided with a limited position surface (11).

6. The tubular beam connection joint according to any one of claims 1 to 4, characterized in that: The outer surface of the end pipe (2) is provided with anti-slip grooves.

7. The tubular beam connection joint according to any one of claims 1 to 4, characterized in that: The plurality of joints are an integrally formed structure.

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