Multi-angle expansion joint

Abstract

The utility model relates to the technical field of pipeline connecting joints, in particular to a multi-angle telescopic joint which comprises an inner pipe, the inner pipe is elastically telescopic, flanges are connected to the two ends of the inner pipe, and a supporting assembly is arranged between the flanges at the two ends; and the supporting assembly comprises two bases which are oppositely arranged. The flanges are arranged at the two ends of the inner pipe, the supporting assembly is arranged between the flanges at the two ends and comprises the base, the telescopic pipe, the telescopic connecting rod and the limiting bolt, and the rotating joint is arranged between the base and the telescopic pipe, so that the telescopic pipe can rotate by multiple angles relative to the base; therefore, flexible adjustment of the angle between the flanges at the two ends is achieved, the connection requirement of different connector angles is met, after the needed angle is adjusted, the limiting bolts are used for limiting and fixing the relative positions of the telescopic pipe and the telescopic connecting rod, and a stable supporting structure is provided for the flanges at the two ends.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection joints, in particular to a multi-angle expansion joint. Background Art

[0002] A pipe connector is a connecting device used to connect two adjacent pipes to form a passage to achieve the transmission and distribution of fluids (such as gas, liquid, etc.). It is an indispensable component of the pipeline system. There are many types of pipe connection joints, including welded joints, flange joints, threaded joints, socket joints, groove joints, etc.

[0003] Existing expansion joints can only achieve simple expansion and contraction adjustment, but cannot achieve adjustment of the connection angle, which limits the flexibility and adaptability of the pipe connector. In particular, in scenarios where pipes at different angles need to be connected, it may be necessary to add additional elbows or tees and other pipe fittings, which increases the complexity of the system and increases the cost. At the same time, existing expansion joints are insufficient in terms of support stability, resulting in the expansion joint being subjected to its own tensile or compressive reaction force after the pipe is connected in a stretched or compressed state. However, since the expansion joint itself does not have a supporting structure, the reaction force acts directly on the connection interface between the expansion joint and the pipe. At the same time, the expansion joint is also affected by factors such as the temperature and pressure of the fluid inside the pipe connection system. The combined effect of the two can easily lead to connection failure.

[0004] In view of this, we propose a multi-angle expansion joint to solve the existing problem. Utility Model Content

[0005] The purpose of the present invention is to provide a multi-angle expansion joint to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a multi-angle expansion joint, comprising:

[0007] An inner tube, wherein the inner tube is elastically retractable and has flanges connected to both ends of the inner tube, and a support assembly is provided between the flanges at both ends;

[0008] A support assembly includes two oppositely arranged bases, the two bases are respectively fixedly mounted on the end faces of the two end flanges, the ends of the two bases away from the flanges are connected to a rotating joint, the other ends of the two rotating joints are connected to a telescopic tube, the other end of the telescopic tube has a hollow lumen, a telescopic connecting rod is connected between the telescopic tubes at both ends, and the two ends of the telescopic connecting rod are respectively movably and telescopically arranged in the hollow lumen of the telescopic tubes at both ends.

[0009] Preferably, the support components are provided in at least three groups, and the three groups of support components are arranged around the outer circumference of the inner tube.

[0010] Preferably, the rotary joint is a ball joint, and two opposite first threaded holes and two opposite second threaded holes are provided on the rotary joint, the virtual connecting line between the two first threaded holes and the virtual connecting line between the two second threaded holes are perpendicular to each other, and the two first threaded holes and the two second threaded holes are all arranged on the same plane passing through the center of the ball joint.

[0011] Preferably, the base is provided with two opposite first connection holes at one end away from the flange, for connection with the two first threaded holes on the rotary joint by screws.

[0012] Preferably, the telescopic tube is provided with two opposite second connection holes at one end close to the rotary joint, for correspondingly connecting to the two second threaded holes on the rotary joint via screws.

[0013] Preferably, the flange is provided with at least two mounting holes for connecting to an external structure, and a fixing groove is also provided on the top surface of the flange.

[0014] Preferably, a sealing ring is provided on the end surface of the inner tube and is connected to the fixing groove.

[0015] Preferably, the inner tube is made of elastic material and can undergo elastic deformation under the action of external force to achieve telescopic function.

[0016] Preferably, the end of the telescopic tube away from the rotary joint is provided with a limiting hole penetrating the end wall of the telescopic tube, the inner wall of the limiting hole has an internal thread, the limiting hole is connected to a limiting bolt through the internal thread, the limiting bolt passes through one end of the telescopic tube and can be movably opposed to the rod body of the telescopic connecting rod, and the other end of the limiting bolt is provided with a driving groove for driving the limiting bolt to oppose the telescopic connecting rod.

[0017] Preferably, a limiting ring is provided on the end surface of one end of the telescopic connecting rod located inside the telescopic tube, and the outer ring diameter of the limiting ring protrudes beyond the rod diameter of the telescopic connecting rod.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention arranges flanges at both ends of the inner tube, and arranges a support assembly between the flanges at both ends. The support assembly includes a base, a telescopic tube, a telescopic connecting rod and a limit bolt. A rotating joint is arranged between the base and the telescopic tube, so that the telescopic tube can rotate at multiple angles relative to the base, thereby realizing flexible adjustment of the angle between the flanges at both ends and meeting the connection requirements between different interface angles. After adjusting to the required angle, the relative position of the telescopic tube and the telescopic connecting rod is limited and fixed by using limit bolts, thereby providing a stable support structure for the flanges at both ends. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic cross-sectional view of the three-dimensional structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 3 This is a side structural diagram of the present utility model;

[0022] Figure 4 For the utility model Figure 1 A schematic diagram of the structure at center A;

[0023] Figure 5 For the utility model Figure 1 A magnified schematic diagram of the structure at point B in the middle;

[0024] Figure 6 It is a cross-sectional schematic diagram of the connection relationship between the rotating joint, the base, and the telescopic tube in the support assembly of the present invention.

[0025] In the figure: 1. Flange; 11. Mounting hole; 12. Fixing groove; 2. Base; 21. First connecting hole; 3. Rotary joint; 31. First threaded hole; 32. Second threaded hole; 4. Telescopic tube; 41. Second connecting hole; 42. Limiting hole; 5. Telescopic connecting rod; 51. Limiting ring; 6. Inner tube; 61. Sealing ring; 7. Limiting bolt; 71. Drive groove. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the utility model proposes a multi-angle expansion joint, comprising:

[0029] The inner tube 6 is elastically retractable and has flanges 1 at both ends thereof, with a support assembly provided between the flanges 1 at both ends;

[0030] The support assembly includes two oppositely arranged bases 2, and the two bases 2 are respectively fixedly mounted on the opposite end faces of the flanges 1 at both ends. The ends of the two bases 2 away from the flange 1 are connected to a rotating joint 3, and the other ends of the two rotating joints 3 are connected to a telescopic tube 4. The other end of the telescopic tube 4 has a hollow lumen, and a telescopic connecting rod 5 is connected between the telescopic tubes 4 at both ends. The two ends of the telescopic connecting rod 5 are respectively movably and telescopically arranged in the hollow lumen of the telescopic tubes 4 at both ends. When in use, it is used to provide angle adjustment between the flanges 1 at both ends and provide stable support for the flanges 1 at both ends through the support assembly.

[0031] Furthermore, there are at least three groups of support components, which are arranged around the outer circumference of the inner tube 6. When in use, the support components are arranged around the outer circumference of the inner tube 6, and after adjusting the angle between the two end flanges 1, they provide stable support for the two end flanges 1.

[0032] Furthermore, the rotary joint 3 is a ball joint, and two opposite first threaded holes 31 and two opposite second threaded holes 32 are provided on the rotary joint 3. The virtual connecting line between the two first threaded holes 31 and the virtual connecting line between the two second threaded holes 32 are perpendicular to each other, and the two first threaded holes 31 and the two second threaded holes 32 are all arranged on the same plane passing through the center of the ball joint.

[0033] Furthermore, two opposite first connection holes 21 are provided at one end of the base 2 away from the flange 1 , for connecting to the two first threaded holes 31 on the rotary joint 3 by screws.

[0034] Furthermore, two opposite second connection holes 41 are provided at one end of the telescopic tube 4 close to the rotary joint 3 , for correspondingly connecting to the two second threaded holes 32 on the rotary joint 3 through screws.

[0035] Furthermore, at least two mounting holes 11 are provided on the flange 1 for connecting to an external structure, and a fixing groove 12 is also provided on the top surface of the flange 1 .

[0036] Furthermore, a sealing ring 61 is provided on the end surface of the inner tube 6 and is connected to the fixing groove 12. When in use, it is used to seal the connection gap between the flange 1 and the interface.

[0037] Furthermore, the inner tube 6 is made of elastic material and can undergo elastic deformation under the action of external force to achieve telescopic function. When in use, when a thrust or a pull is applied to the flange 1, the inner tube 6 will extend or shorten accordingly to adapt to different length requirements.

[0038] When the lever 5 is unlocked, the lever 5 is unlocked and the other end of the lever 5 is unlocked, so that the lever 5 can be unlocked and the other end of the lever 5 can be unlocked.

[0039] Furthermore, a limiting ring 51 is provided on the end face of one end of the telescopic link 5 located inside the telescopic tube 4. The outer diameter of the limiting ring 51 protrudes beyond the rod diameter of the telescopic link 5. When in use, the outer diameter of the limiting ring 51 is larger than the outer diameter of the telescopic link 5, so that the limiting ring 51 can be offset against the limiting bolt 7 passing through the end wall of the telescopic tube 4, thereby limiting the telescopic stroke of the telescopic link 5 and preventing the telescopic link 5 from falling out of the telescopic tube 4.

[0040] The working principle of a multi-angle telescopic joint based on Example 1 is: when in use, first ensure that the various components of the telescopic joint are connected in place. When adjusting the angle, the rotation angle of the telescopic tube 4 relative to the base 2 can be adjusted by applying external force to the flanges 1 at both ends. Since the telescopic tubes 4 at both ends are connected to the base 2 through the rotating joints 3, the rotation angle of the telescopic tubes 4 at both ends can be adjusted independently. While rotating and adjusting, the position of the telescopic link 5 in the telescopic tube 4 will also change accordingly. By changing the telescopic stroke of the telescopic link 5, the relative angle between the flanges 1 at both ends can be further fine-tuned to adapt to the connection requirements between different connection interface angles. When the required angle is adjusted, the limit bolt 7 is adjusted to abut against the telescopic link 5, thereby fixing the relative position of the telescopic tube 4 and the telescopic link 5, so that the supporting assembly stably supports the flanges 1 at both ends, ensuring that the multi-angle telescopic joint maintains a stable connection state during use.

[0041] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A multi-angle expansion joint, characterized in that: include: An inner tube (6), wherein the inner tube (6) is elastically retractable and both ends of the inner tube (6) are connected to flanges (1), and a support assembly is provided between the flanges (1) at both ends; A support assembly comprises two bases (2) arranged opposite to each other, the two bases (2) being fixedly mounted on opposite end faces of flanges (1) at both ends, the ends of the two bases (2) away from the flanges (1) being connected to a rotary joint (3), the other ends of the two rotary joints (3) being connected to a telescopic tube (4), the other ends of the telescopic tube (4) having a hollow lumen, a telescopic connecting rod (5) being connected between the telescopic tubes (4) at both ends, the two ends of the telescopic connecting rod (5) being movably and telescopically arranged in the hollow lumen of the telescopic tubes (4) at both ends.

2. The multi-angle expansion joint according to claim 1, characterized in that: The support components are provided in at least three groups, and the three groups of support components are arranged around the outer circumference of the inner tube (6).

3. The multi-angle expansion joint according to claim 2, characterized in that: The rotary joint (3) is a ball joint, and is provided with two opposite first threaded holes (31) and two opposite second threaded holes (32). A virtual connecting line between the two first threaded holes (31) and a virtual connecting line between the two second threaded holes (32) are perpendicular to each other, and the two first threaded holes (31) and the two second threaded holes (32) are all arranged on the same plane passing through the center of the ball joint.

4. The multi-angle expansion joint according to claim 3, characterized in that: The base (2) is provided with two opposite first connection holes (21) at one end away from the flange (1), which are used to be connected to the two first threaded holes (31) on the rotary joint (3) by screws.

5. The multi-angle expansion joint according to claim 3, characterized in that: The telescopic tube (4) is provided with two opposite second connection holes (41) at one end close to the rotary joint (3), which are used to be connected to the two second threaded holes (32) on the rotary joint (3) via screws.

6. The multi-angle expansion joint according to claim 1, characterized in that: The flange (1) is provided with at least two mounting holes (11) for connecting to an external structure, and a fixing groove (12) is also provided on the top surface of the flange (1).

7. The multi-angle expansion joint according to claim 6, characterized in that: A sealing ring (61) is provided on the end surface of the inner tube (6) and is connected to the fixing groove (12).

8. The multi-angle expansion joint according to claim 7, characterized in that: The inner tube (6) is made of elastic material and undergoes elastic deformation under the action of external force.

9. The multi-angle expansion joint according to claim 2, characterized in that: The end of the telescopic tube (4) away from the rotary joint (3) is provided with a limiting hole (42) penetrating the end wall of the telescopic tube (4); the inner wall of the limiting hole (42) has an internal thread; the limiting hole (42) is connected to a limiting bolt (7) via the internal thread; the limiting bolt (7) passes through one end of the telescopic tube (4) and can movably abut against the rod body of the telescopic connecting rod (5); the other end of the limiting bolt (7) is provided with a driving groove (71) for driving the limiting bolt (7) to abut against the telescopic connecting rod (5).

10. The multi-angle expansion joint according to claim 9, characterized in that: A limiting ring (51) is provided on the end surface of one end of the telescopic connecting rod (5) located inside the telescopic tube (4), and the outer ring diameter of the limiting ring (51) protrudes beyond the rod diameter of the telescopic connecting rod (5).

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