Universal hinged underground pipe quick connector

Abstract

The present application provides a universal hinge type underground pipeline quick connector, relates to the technical field of gas engineering, and specifically comprises a hinge frame; the upper and lower sides of the front end of the hinge frame are rotationally connected with the upper and lower ends of the top of a cross frame; the left and right sides of the cross frame are rotationally connected with the rear positions of the left and right sides of an adapter frame; the adapter frame is located in front of the hinge frame; and the hinge frame and the adapter frame are staggered and distributed on the left and right sides of the cross frame. The connector forms a universal hinge structure through the hinge frame, the cross frame and the adapter frame, can realize multi-angle free adjustment, perfectly adapts to the position offset and angle deviation during underground pipeline installation, avoids stress concentration and damage caused by forced docking of the pipeline, and significantly improves the adaptability of pipeline docking. The existing pipeline connector does not have a universal adjustment structure, cannot adapt to multi-angle offset during underground pipeline installation, and forcibly docking can easily cause stress concentration and damage of the pipeline.

Description

Technical Field

[0001] This invention relates to the field of gas engineering technology, and in particular to a universal hinged quick connector for underground pipelines. Background Technology

[0002] In urban gas transmission and distribution systems, the installation, renovation, emergency repair, and connection of buried gas pipelines place extremely high demands on the safety, sealing, and installation efficiency of pipeline connection devices. Gas media are flammable and explosive, and if the pipeline interface fails to seal, the connection becomes loose, or stress is damaged, it can easily lead to safety accidents such as leakage and explosion.

[0003] Application number CN202320950224.3 discloses a quick connector for gas pipelines, relating to the technical field of pipeline connection devices. The mounting rod has a sleeve fixedly connected to its surface, a fixing block movably connected inside the sleeve, a fixing rod fixedly connected to one end of the fixing block, a shock-absorbing spring movably connected to one side of the fixing rod, a hydraulic rod movably connected to the surface of the shock-absorbing spring, a pulley movably connected to one side of the hydraulic rod, a rotating groove movably connected to the surface of the pulley, and a flange fixedly connected to one side of the rotating groove. This invention, through the movable connection of the extension groove and the extension block, allows the device to adjust the diameter of the outer ring of the shaft to connect to different types of pipelines, effectively solving the problem that existing devices cannot adjust their connection size according to the pipeline type, thus hindering the device's practicality.

[0004] Based on the above patent searches and understanding of existing underground pipeline connections:

[0005] Traditional pipe connectors lack a universal adjustment structure, making them unable to adapt to the multi-angle offsets during underground pipe installation. Forced connection can easily cause stress concentration and damage to the pipe.

[0006] Existing pipe fixing methods mostly rely on bolt tightening, which is cumbersome and time-consuming, making it difficult to achieve rapid installation and disassembly in confined underground spaces. Furthermore, the pipe connections lack flexible compensation structures, and when the foundation experiences slight settlement or the pipe undergoes thermal expansion and contraction, the sealing structure is prone to failure, leading to media leakage.

[0007] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a universal hinged quick connector for underground pipelines in order to achieve a more practical purpose. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention provides a universal hinge-type quick connector for underground pipelines. This solves the problems of existing pipeline connectors lacking a universal adjustment structure, failing to adapt to multi-angle offsets during underground pipeline installation, and being prone to stress concentration and damage due to forced connection. Furthermore, existing pipeline fixing methods mostly rely on bolt tightening, which is cumbersome and time-consuming, making it difficult to achieve rapid installation and disassembly in confined underground spaces. Additionally, the lack of a flexible compensation structure at the pipeline connection point makes the sealing structure prone to failure and media leakage when the foundation experiences slight settlement or the pipeline undergoes thermal expansion and contraction.

[0009] This invention provides a universal hinge-type quick connector for underground pipes, specifically comprising: a hinge frame; the front upper and lower sides of the hinge frame are rotatably connected to the top upper and lower ends of the cross; the left and right sides of the cross are rotatably connected to the rear left and right sides of an adapter frame; the adapter frame is located in front of the hinge frame, and the hinge frame and adapter frame are staggered on both sides of the cross; the middle of the cross is a through-type design, and a pipe fitting is inserted through the middle of the cross; the pipe fitting is located inside the hinge frame and the adapter frame; a fixing bracket A is fixedly installed at the middle of the rear end of the cross; and the pipe fitting... The middle and rear positions are connected to the interior of the fixed frame A. Three bevel gears A are rotatably connected to the inner circumference of the fixed frame A, and a bevel gear ring A is rotatably connected to the middle position of the fixed frame A. The bevel gear ring A meshes with the three bevel gears A respectively. The rear end of the bevel gear ring A is provided with a spiral groove. The rear end of the fixed frame A is provided with three sliding grooves, and a fixed claw A is slidably connected in each sliding groove. The front end of each of the three fixed claws A is provided with an arc-shaped groove. The arc-shaped grooves of the three fixed claws A mesh with the spiral grooves of the bevel gear ring A. The inner sides of the three fixed claws A are all in contact with the middle and rear positions of the pipe fitting circumference.

[0010] Furthermore, a fixing frame B is fixedly installed at the middle position of the front end of the cross, and the front position of the pipe fitting passes through the inside of the fixing frame B. Three bevel gears B are rotatably connected to the inner circumferential surface of the fixing frame B, and a bevel gear ring B is rotatably connected to the middle position of the inside of the fixing frame B. The fixing frame A and the fixing frame B are symmetrically designed.

[0011] Furthermore, the bevel ring B meshes with three bevel gears B respectively, the front end of the bevel ring B is provided with a spiral groove, the front end of the fixing frame B is provided with three sliding grooves, and a fixing claw B is slidably connected in each sliding groove.

[0012] Furthermore, each of the three fixed claws B has an arc-shaped groove at its rear end, the arc-shaped groove of the three fixed claws B engages with the spiral groove of the bevel ring B, and the inner side of each of the three fixed claws B is in contact with the front center of the circumference of the pipe fitting.

[0013] Furthermore, a corrugated compensating pipe is provided at both the front and rear ends of the pipe fitting. The two corrugated compensating pipes are symmetrically distributed on the front and rear sides of the cross, and the two corrugated compensating pipes are located inside the hinge frame and the adapter frame, respectively.

[0014] Furthermore, each of the corrugated compensating pipes is provided with a connecting flange on its outer side, and four mounting plates are provided on the outer side of the connecting flange. The hinge frame and the adapter frame are each provided with four connecting plates inside. The mounting plates on the outer side of the two connecting flanges are fixedly connected to the connecting plates of the hinge frame and the adapter frame respectively by bolts.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This connector forms a universal hinge structure through a hinge frame, cross, and adapter frame, which can achieve free adjustment at multiple angles. It perfectly adapts to the positional offset and angular deviation during the installation of underground pipelines, avoiding stress concentration and damage caused by forced pipeline connection, and significantly improving the compatibility of pipeline connection. At the same time, the two ends of the pipeline are equipped with corrugated compensation pipes, which can flexibly compensate for the displacement caused by foundation settlement and pipeline thermal expansion and contraction, effectively protecting the sealing structure from damage, reducing the risk of media leakage, and increasing service life.

[0017] 2. The locking method adopts bevel gear A, bevel gear B and bevel gear ring A, bevel gear ring B in conjunction with their own spiral grooves to drive the fixing claw A and fixing claw B to clamp synchronously. Only bevel gear A and bevel gear B need to be rotated to complete the quick clamping and loosening of pipe fittings, eliminating the cumbersome operation of traditional multi-bolts. It can also efficiently complete installation and disassembly in narrow underground spaces, greatly shortening the construction time.

[0018] 3. The fixed brackets A and B are symmetrically double-locked, making the pipe fittings more secure and effectively preventing displacement and loosening. Combined with the reliable connection of the connecting flange, the overall structure has high strength and high reusability, meeting the long-term use requirements of underground pipelines. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0020] In the attached diagram:

[0021] Figure 1 A top view of the universal hinge type quick connector for underground pipelines according to an embodiment of the present invention is shown;

[0022] Figure 2 A schematic diagram of the left-side structure of the universal hinge type quick connector for underground pipelines according to an embodiment of the present invention is shown;

[0023] Figure 3A side view of the universal hinge type quick connector for underground pipelines according to an embodiment of the present invention is shown.

[0024] Figure 4 A half-section top view of the universal hinge type underground pipeline quick connector according to an embodiment of the present invention is shown;

[0025] Figure 5 A schematic diagram of the left half-section structure of the universal hinge type underground pipeline quick connector according to an embodiment of the present invention is shown;

[0026] Figure 6 A half-sectional side view of the universal hinge type quick connector for underground pipelines according to an embodiment of the present invention is shown.

[0027] List of reference numerals

[0028] 1. Hinge bracket; 101. Cross; 102. Adapter bracket; 2. Fixing bracket A; 201. Bevel gear A; 202. Bevel gear ring A; 203. Fixing claw A; 3. Fixing bracket B; 301. Bevel gear B; 302. Bevel gear ring B; 303. Fixing claw B; 4. Pipe fittings; 401. Corrugated compensating pipe; 402. Connecting flange. Detailed Implementation

[0029] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0030] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of this disclosure shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It should also be understood that terms such as those defined in a common dictionary shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as being interpreted in an idealized or highly formalized sense, unless expressly defined in the embodiments of this disclosure.

[0031] The terms "first," "second," and similar words used in the embodiments of this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a," "one," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. Likewise, the terms "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. In the following description, spatial and directional terms such as "upper," "lower," "front," "rear," "top," "bottom," "vertical," and "horizontal" may be used to describe embodiments of this disclosure; however, it should be understood that these terms are only for the convenience of describing the embodiments shown in the figures and do not require the actual device to be constructed or operated in a specific orientation. In the following description, the use of terms such as "connected," "joined," "fixed," and "attached" can refer to a direct connection between two elements or structures without other elements or structures, or to an indirect connection between two elements or structures via an intermediate element or structure, unless otherwise expressly stated herein.

[0032] Example:

[0033] As attached Figure 1 To be continued Figure 6 As shown:

[0034] This invention provides a universal hinge-type quick connector for underground pipes, comprising: a hinge frame 1; the front upper and lower sides of the hinge frame 1 are rotatably connected to the top upper and lower ends of the cross 101; the left and right sides of the cross 101 are rotatably connected to the left and right rear sides of the adapter frame 102; the adapter frame 102 is located in front of the hinge frame 1, and the hinge frame 1 and the adapter frame 102 are staggered on both sides of the cross 101; the middle of the cross 101 is a through-type design, and a pipe component 4 passes through the middle of the interior of the cross 101; the pipe component 4 is located inside the hinge frame 1 and the adapter frame 102; a fixing bracket A2 is fixedly installed at the middle of the rear end of the cross 101; and the pipe component 4... The middle and rear positions are connected to the interior of the fixed frame A2. Three bevel gears A201 are rotatably connected to the inner circumference of the fixed frame A2, and a bevel gear ring A202 is rotatably connected to the middle position of the fixed frame A2. The bevel gear ring A202 meshes with the three bevel gears A201 respectively. The rear end of the bevel gear ring A202 is provided with a spiral groove. The rear end of the fixed frame A2 has three sliding grooves, and a fixed claw A203 is slidably connected in each sliding groove. The front end of each of the three fixed claws A203 is provided with an arc-shaped groove. The arc-shaped grooves of the three fixed claws A203 mesh with the spiral grooves of the bevel gear ring A202. The inner sides of the three fixed claws A203 are all in contact with the middle and rear positions of the pipe fitting 4 circumference.

[0035] Among them, a fixing frame B3 is fixedly installed at the middle position of the front end of the cross 101. The front position of the pipe component 4 is inserted into the inside of the fixing frame B3. Three bevel gears B301 are rotatably connected to the inner circumferential position of the fixing frame B3, and a bevel gear ring B302 is rotatably connected to the middle position of the inside of the fixing frame B3. The fixing frame A2 and the fixing frame B3 are symmetrically designed.

[0036] Among them, the bevel ring B302 meshes with three bevel gears B301 respectively, the front end of the bevel ring B302 is provided with a spiral groove, the front end of the fixed frame B3 is provided with three sliding grooves, and a fixed claw B303 is slidably connected in each sliding groove.

[0037] Among them, the rear end of each of the three fixing claws B303 is provided with an arc-shaped groove, the arc-shaped groove of the three fixing claws B303 engages with the spiral groove of the bevel tooth ring B302, and the inner side of each of the three fixing claws B303 is in contact with the front center of the four circumferences of the pipe fitting.

[0038] Among them, a corrugated compensating pipe 401 is provided at both the front and rear ends of the pipe fitting 4. The two corrugated compensating pipes 401 are symmetrically distributed on the front and rear sides of the cross 101, and the two corrugated compensating pipes 401 are located inside the hinge frame 1 and the adapter frame 102, respectively.

[0039] Each corrugated compensating pipe 401 has a connecting flange 402 on its outer side, and four mounting plates are provided on the outer side of the connecting flange 402. The hinge frame 1 and the adapter frame 102 are each provided with four connecting plates inside. The mounting plates on the outer side of the two connecting flanges 402 are fixedly connected to the connecting plates of the hinge frame 1 and the adapter frame 102 respectively by bolts.

[0040] When using:

[0041] During the installation of underground pipelines, pipe fitting 4 is first inserted into the middle position of cross 101, fixing bracket A2 and fixing bracket B3. Next, the mounting plates on the outside of the two connecting flanges 402 are fixedly connected to the connecting plates of hinge bracket 1 and adapter bracket 102 respectively by bolts. Pipe fitting 4 is initially installed in the middle position inside hinge bracket 1 and adapter bracket 102. According to the installation angle and offset of the underground pipeline, the rotation angle of hinge bracket 1 and adapter bracket 102 around cross 101 is adjusted to achieve universal adjustment.

[0042] After the angle adjustment is completed, rotate the bevel gear A201 inside the fixing frame A2. The bevel gear A201 meshes and drives the bevel ring A202 to rotate. The spiral groove at the rear end of the bevel ring A202 cooperates with the arc groove of the fixing claw A203, driving the three fixing claws A203 to slide synchronously towards the center along the sliding groove of the fixing frame A2, clamping the middle and rear circumferential surface of the pipe fitting 4. Similarly, rotate the bevel gear B301 inside the fixing frame B3, driving the three fixing claws B303 to clamp the middle and front circumferential surface of the pipe fitting 4, quickly completing the locking and fixing of the pipe. There is no need for cumbersome bolt operation, which is suitable for underground narrow space operation and can also play a multiple fixing and anti-displacement effect.

[0043] By aligning the connecting flange 402 on the outside of the corrugated compensating pipe 401 with the flange of the pipe to be connected, a sealed connection can be achieved. When the pipe is displaced due to thermal expansion and contraction or foundation settlement, the corrugated compensating pipe 401 flexibly expands and contracts to compensate for the displacement, avoiding failure of the sealing structure under stress and preventing media leakage.

[0044] During disassembly, rotating bevel gears A201 and B301 in the opposite direction will simultaneously loosen the pipes, and the connecting plates of the hinge frame 1 and adapter frame 102, which are connected by bolts to the mounting plates on the outside of the two connecting flanges 402, will allow for quick removal of the connector, resulting in a high reuse rate.

[0045] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. The scope of protection of this disclosure shall be determined by the scope of the claims.

Claims

1. A universal hinged quick connector for underground pipelines, characterized in that, include: Hinge frame (1); The front upper and lower sides of the hinge frame (1) are rotatably connected to the top upper and lower ends of the cross (101), and the left and right sides of the cross (101) are rotatably connected to the left and right rear sides of the adapter frame (102). The adapter frame (102) is located in front of the hinge frame (1), and the hinge frame (1) and the adapter frame (102) are staggered on both sides of the cross (101). The middle of the cross (101) is designed to be through, and a pipe fitting (4) is inserted through the middle of the interior of the cross (101). The pipe fitting (4) is located inside the hinge frame (1) and the adapter frame (102). A fixing bracket A (2) is fixedly installed at the middle of the rear end of the cross (101), and the pipe fitting (4) is inserted through the middle rear end. Inside the fixed frame A (2), three bevel gears A (201) are rotatably connected to the inner circumferential surface of the fixed frame A (2), and a bevel gear ring A (202) is rotatably connected to the middle of the fixed frame A (2). The bevel gear ring A (202) meshes with the three bevel gears A (201) respectively. A spiral groove is provided at the rear end of the bevel gear ring A (202). Three sliding grooves are opened at the rear end of the fixed frame A (2), and a fixed claw A (203) is slidably connected in each sliding groove. An arc groove is provided at the front end of each of the three fixed claws A (203). The arc grooves of the three fixed claws A (203) mesh with the spiral grooves of the bevel gear ring A (202). The inner sides of the three fixed claws A (203) are all in contact with the middle and rear of the circumference of the pipe fitting (4).

2. The universal hinge type quick connector for underground pipelines as described in claim 1, characterized in that: The front middle position of the cross (101) is fixedly installed with a fixing frame B (3), the front position of the pipe component (4) is inserted into the inside position of the fixing frame B (3), the inner circumferential position of the fixing frame B (3) is rotatably connected with three bevel gears B (301), and the inner middle position of the fixing frame B (3) is rotatably connected with a bevel gear ring B (302). The fixing frame A (2) and the fixing frame B (3) are symmetrically designed.

3. The universal hinge-type quick connector for underground pipelines as described in claim 2, characterized in that: The bevel ring B (302) meshes with three bevel gears B (301) respectively. The front end of the bevel ring B (302) is provided with a spiral groove. The front end of the fixing frame B (3) is provided with three sliding grooves, and a fixing claw B (303) is slidably connected in each sliding groove.

4. The universal hinge type quick connector for underground pipelines as described in claim 3, characterized in that: The rear end of each of the three fixed claws B (303) is provided with an arc-shaped groove. The arc-shaped groove of the three fixed claws B (303) meshes with the spiral groove of the bevel ring B (302). The inner side of each of the three fixed claws B (303) is in contact with the front center of the circumference of the pipe fitting (4).

5. The universal hinge type quick connector for underground pipelines as described in claim 4, characterized in that: A corrugated compensating pipe (401) is provided at both the front and rear ends of the pipe fitting (4). The two corrugated compensating pipes (401) are symmetrically distributed on the front and rear sides of the cross (101), and the two corrugated compensating pipes (401) are located inside the hinge frame (1) and the adapter frame (102), respectively.

6. The universal hinged underground pipeline quick connector as described in claim 5, characterized in that: Each of the corrugated compensating pipes (401) has a connecting flange (402) on its outer side. The connecting flange (402) has four mounting pieces on its outer side. The hinge frame (1) and the adapter frame (102) each have four connecting pieces inside. The mounting pieces on the outer side of the two connecting flanges (402) are fixedly connected to the connecting pieces of the hinge frame (1) and the adapter frame (102) respectively by bolts.

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