Pipe overlap coupling device

Abstract

The application relates to a pipeline overlapping coupling device which comprises a first clamp, a second clamp, a cylinder cup, a supporting pin, a locking nail and an elastic piece. One end of the supporting pin is provided with a locking block, the other end of the supporting pin is provided with a locking hole, one end of the cylinder cup is open and the other end of the cylinder cup is closed, the left and right ends of the first clamp and the left and right ends of the second clamp are provided with clamp arms, the first clamp is further fixedly connected with the open end of the cylinder cup, the supporting pin further penetrates the elastic piece, the closed end of the cylinder cup and the second clamp, and the elastic piece is clamped between the locking block and the closed end of the cylinder cup when the locking nail is inserted into the locking hole. When the application is assembled or disassembled, the user only needs to exert axial thrust or tension on the locking nail, so that the first clamp and the second clamp are connected into one, the two or more parallel pipelines are clamped, the assembling and disassembling operation is greatly simplified, the user's physical strength is saved, and the assembling and disassembling efficiency of the double-clamp or multi-clamp is improved.

Description

Technical Field

[0001] This invention belongs to the field of pipeline connection technology, and particularly relates to a pipeline overlapping connection device. Background Technology

[0002] Clamps are commonly used to support or limit various pipes in pneumatic or hydraulic systems. Since there are numerous pipes in pneumatic or hydraulic systems, and the outer diameters of various pipes are different, a single clamp is only used to support or limit a single pipe, while double or multi-clamp clamps are used to support or limit multiple pipes simultaneously, avoiding collisions or interference and making the pipe layout neater. At the same time, in the field of aero-engines, pipe cracks or breaks often occur due to vibration. By using clamps, the stress caused by vibration on the pipes can be effectively reduced, improving the reliability of pipe operation.

[0003] For example, patent document with publication number "CN204942767U" discloses a double-clamp structure, belonging to the field of installation and fixing of pipe and other structural components. The double-clamp structure includes: an upper clamp frame (2), a lower clamp frame (1), and a bolt assembly connecting the upper clamp frame (2) and the lower clamp frame (1). The upper clamp frame (2) and the lower clamp frame (1) have a hole in the middle. Two semi-cylindrical metal felts (5, 6) are installed on both sides of the hole. A nut is provided in the hole of the lower clamp frame (1), and the bolt passes through the hole of the upper clamp frame (2) and is tightened into the nut. Using this patented technical solution, the nut is a self-locking nut, which includes a boss (13) and an axial pressing surface (12), so that the upper and lower clamp frames are self-lockingly connected, eliminating the need for consumable locking plates. The self-locking nut can achieve rapid pre-tightening of the assembly structure, ensuring the stability of the pipe support or limiting structure.

[0004] However, existing double or multi-joint clamps are generally locked with bolts. When installing or removing double or multi-joint clamps, screwdrivers or other tools are usually used to tighten or loosen the bolts. When tightening or loosening the bolts, users need to apply rotational torque to the bolts and rotate the hand tools many times. This operation is cumbersome and requires a lot of physical strength, which affects the efficiency of installing or removing double or multi-joint clamps. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention provides a pipe overlapping connection device.

[0006] This invention provides a pipe overlapping connection device, including a first clamp, a second clamp, a cylindrical cup, a support pin, a locking pin, and an elastic element. One end of the support pin is provided with a locking block, and the other end of the support pin is provided with a locking hole. One end of the cylindrical cup is open and the other end is closed. Both ends of the first clamp and the left and right ends of the second clamp are provided with clamp arms. The first clamp is also fixedly connected to the open end of the cylindrical cup. The support pin also passes through the elastic element, the closed end of the cylindrical cup, and the second clamp. When the locking pin is inserted into the locking hole, the elastic element is clamped between the locking block and the closed end of the cylindrical cup.

[0007] The second clamp is also fixedly connected to the protrusion. The surface of the protrusion is provided with a locking groove. When the locking pin is inserted into the locking hole, at least a part of the locking pin is accommodated in the locking groove.

[0008] The surface of the protrusion is also provided with a transition slope. One side of the transition slope is connected to the slot of the locking groove, and the other side of the transition slope is connected to the side of the protrusion. The relative angle between the transition slope and the surface of the second clamp is greater than zero.

[0009] The locking pin is a cylindrical pin, a tapered pin, or a bolt.

[0010] The cross-section of the locking groove is semi-circular.

[0011] The elastic element is a cylindrical helical compression spring.

[0012] The open end of the cylindrical cup is also fixedly connected to the limiting cup. The limiting cup has a receiving cavity inside and an inlet hole on its surface. The inlet hole communicates with the receiving cavity. The width of the locking block is smaller than the width of the inlet hole, and the length of the locking block is greater than the width of the inlet hole. When the elastic element is clamped between the locking block and the closed end of the cylindrical cup, the locking block is also accommodated in the receiving cavity.

[0013] The cylindrical cup and the limiting cup are manufactured as a single piece.

[0014] The cross-section of the locking block is oval.

[0015] The hoop arm is a semi-circular arc shape formed by bending thin-walled metal sheet.

[0016] The beneficial effects of this invention are as follows: Using the technical solution provided by this invention, when installing or disassembling the invention, the user only needs to apply axial pushing or pulling force to the locking pin to connect the first and second clamps into one unit, and clamp the pipe between two adjacent clamp arms. Compared with the prior art, the user no longer needs to hold a screwdriver or other tools, and no longer needs to rotate the hand tools multiple times, simplifying the installation and disassembly operation, saving the user's physical strength, and improving the installation and disassembly efficiency of double or multi-clamp clamps. At the same time, because no wrench is needed for disassembly, the requirements for operating space are reduced, improving the adaptability of the clamps for installation and disassembly in narrow spaces. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a front view of the protrusion of the present invention; Figure 4 This is a top view of the limiting cup and support pin of the present invention; Figure 5 This is a schematic diagram of the connection between the support pin and the locking pin of the present invention.

[0018] In the figure: 1-First clamp, 2-Second clamp, 3-Cylinder cup, 4-Support pin, 5-Locking pin, 6-Elastic element, 7-Locking block, 8-Clamp arm, 9-Protrusion, 10-Locking groove, 11-Transition slope, 12-Limiting cup, 13-Accommodation cavity, 14-Inlet hole. Detailed Implementation

[0019] The technical solution of the present invention will be further described below with reference to the accompanying drawings, but the scope of protection claimed is not limited thereto; This invention provides a pipe overlapping connection device, such as... Figures 1 to 5 As shown, the pipe overlapping connection device includes a first clamp 1, a second clamp 2, a cylindrical cup 3, a support pin 4, a locking pin 5, and an elastic element 6. One end of the support pin 4 is provided with a locking block 7, and the other end of the support pin 4 is provided with a locking hole. One end of the cylindrical cup 3 is open and the other end is closed. Both ends of the first clamp 1 and the second clamp 2 are provided with clamp arms 8. The first clamp 1 is also fixedly connected to the open end of the cylindrical cup 3. The support pin 4 also passes through the elastic element 6, the closed end of the cylindrical cup 3, and the second clamp 2. When the locking pin 5 is inserted into the locking hole, the elastic element 6 is clamped between the locking block 7 and the closed end of the cylindrical cup 3.

[0020] Using the technical solution provided by this invention, when installing or disassembling the invention, the user only needs to apply axial pushing or pulling force to the locking pin to connect the first and second clamps into one unit, and clamp the pipe between the two adjacent clamp arms. Compared with the prior art, the user no longer needs to hold a screwdriver or other tools, and no longer needs to rotate the hand tools multiple times, simplifying the installation and disassembly operation, saving the user's physical strength, and improving the installation and disassembly efficiency of double or multi-clamp clamps. At the same time, since no wrench is needed for disassembly, the requirements for operating space are reduced, improving the adaptability of the clamps for installation and disassembly in narrow spaces.

[0021] Specifically, the second clamp 2 is also fixedly connected to the protrusion 9. The surface of the protrusion 9 is provided with a locking groove 10. When the locking pin 5 is inserted into the locking hole, at least a portion of the locking pin 5 is accommodated within the locking groove 10. The surface of the protrusion 9 is also provided with a transition slope 11. One side of the transition slope 11 connects to the opening of the locking groove 10, and the other side of the transition slope 11 connects to the side of the protrusion 9. The relative angle between the transition slope 11 and the surface of the second clamp 2 is greater than zero. Preferably, the locking pin 5 is a cylindrical pin, a conical pin, or a bolt. By adopting the technical solution of the present invention, the rotational freedom of the locking pin 5 is restricted due to the provision of the transition slope 11 and the locking groove 10, making the clamp provided by the present invention more stable for the support structure or limiting structure of the pipeline.

[0022] Furthermore, the second clamp 2 is riveted to the protrusion 9 as a single unit. The locking groove 10 has a semi-circular cross-section. The elastic element 6 is a cylindrical helical compression spring. By employing the technical solution of this invention, the preload provided by the elastic element 6 makes the clamp assembly structure more stable, further enhancing the stability of the clamp's support or limiting structure on the pipeline.

[0023] Furthermore, the open end of the cylindrical cup 3 is fixedly connected to the limiting cup 12. The limiting cup 12 has a receiving cavity 13, and the surface of the limiting cup 12 also has an inlet hole 14, which communicates with the receiving cavity 13. The width of the locking block 7 is smaller than the width of the inlet hole 14, and the length of the locking block 7 is greater than the width of the inlet hole 14. When the elastic member 6 is clamped between the locking block 7 and the closed end of the cylindrical cup 3, the locking block 7 is also accommodated in the receiving cavity 13. Preferably, the cylindrical cup 3 and the limiting cup 12 are integrally manufactured. The cross-section of the locking block 7 is oval. The first clamp 1 is riveted to the open end of the cylindrical cup 3. The clamp arm 8 is a semi-circular arc shape formed by bending a thin-walled metal sheet. By adopting the technical solution of the present invention, when assembling the support pin, the support pin can be prevented from coming out of the receiving cavity 13 by rotating the posture of the support pin, making the clamp assembly structure provided by the present invention more stable, and further making the clamp support structure or limiting structure of the pipeline more stable.

Claims

1. A pipe overlapping connection device, characterized in that: It includes a first clamp (1), a second clamp (2), a cylindrical cup (3), a support pin (4), a locking pin (5), and an elastic element (6). One end of the support pin (4) is provided with a locking block (7), and the other end of the support pin (4) is provided with a locking hole. One end of the cylindrical cup (3) is open and the other end is closed. Both the left and right ends of the first clamp (1) and the left and right ends of the second clamp (2) are provided with clamp arms (8). The first clamp (1) is also fixedly connected to the open end of the cylindrical cup (3). The support pin (4) also passes through the elastic element (6), the closed end of the cylindrical cup (3), and the second clamp (2). When the locking pin (5) is inserted into the locking hole, the elastic element (6) is clamped between the locking block (7) and the closed end of the cylindrical cup (3).

2. The pipe overlapping connection device as described in claim 1, characterized in that: The second clamp (2) is also fixedly connected to the protrusion (9). The surface of the protrusion (9) is provided with a locking groove (10). When the locking pin (5) is inserted into the locking hole, at least a part of the locking pin (5) is accommodated in the locking groove (10).

3. The pipe overlapping connection device as described in claim 2, characterized in that: The surface of the protrusion (9) is also provided with a transition slope (11). One side of the transition slope (11) is connected to the slot of the locking groove (10), and the other side of the transition slope (11) is connected to the side of the protrusion (9). The relative angle between the transition slope (11) and the surface of the second clamp (2) is greater than zero.

4. A pipe overlapping connection device as described in claim 1 or 2, characterized in that: The locking pin (5) is a cylindrical pin, a tapered pin, or a bolt.

5. A pipe overlapping connection device as described in any one of claims 1 to 3, characterized in that: The cross-section of the locking groove (10) is semi-circular.

6. The pipe overlapping connection device as described in claim 1, characterized in that: The elastic element (6) is a cylindrical helical compression spring.

7. A pipe overlapping connection device as described in claim 1, characterized in that: The open end of the cylindrical cup (3) is also fixedly connected to the limiting cup (12). The limiting cup (12) is provided with a receiving cavity (13). The surface of the limiting cup (12) is also provided with an inlet hole (14). The inlet hole (14) communicates with the receiving cavity (13). The width of the locking block (7) is smaller than the width of the inlet hole (14), and the length of the locking block (7) is greater than the width of the inlet hole (14). When the elastic member (6) is clamped between the locking block (7) and the closed end of the cylindrical cup (3), the locking block (7) is also accommodated in the receiving cavity (13).

8. A pipe overlapping connection device as described in claim 7, characterized in that: The cylindrical cup (3) and the limiting cup (12) are manufactured as a single piece.

9. A pipe overlapping connection device as described in claim 7, characterized in that: The cross-section of the locking block (7) is oval.

10. A pipe overlapping connection device as described in claim 1, characterized in that: The hoop (8) is a semi-circular arc shape formed by bending a thin metal sheet.

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