An expansion joint structure that is convenient for disassembly and assembly

Abstract

The present invention discloses an expansion joint structure that is convenient for disassembly and assembly, which relates to the technical field of pipeline connection. It includes an expansion joint pipe and a transition pipe. Docking shoulders are fixedly arranged at both ends of the expansion joint pipe. Guide columns are circularly arrayed at both ends of the outer wall of the expansion joint pipe. Quick-connect rods are movably inserted into the tops of the guide columns. Rotating columns are fixedly arranged at the tops of the sides of the guide columns. Transverse movement grooves are formed at the tops of the quick-connect rods. Yielding grooves are formed on the sides of the quick-connect rods. Guide blocks are rotatably connected to the outer walls of the rotating columns. The expansion joint structure of the present invention includes an expansion joint pipe and a transition pipe. A flange is provided at one end of the transition pipe for indirect connection with the pipeline. Quick-connect rods are evenly arranged on the outer wall of the expansion joint pipe. Under the action of the driving assembly, the quick-connect rods enable the rapid separation or docking of the expansion joint pipe and the transition pipe. Compared with the traditional method of fixing the expansion joint to the pipeline by using a flange and a plurality of bolts, the disassembly and assembly process is rapid, time-consuming is short, and the disassembly and assembly process is simple.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline connection, and particularly relates to an expansion joint structure that is convenient for disassembly and assembly. Background Art

[0002] An expansion joint refers to a device used to accommodate the expansion or contraction of an object. It is usually made of flexible materials such as rubber or metal and is installed in a pipeline or container system. The design of the expansion joint can accommodate volume changes caused by temperature changes, pressure changes, or other factors. The main function of the expansion joint is to slow down or eliminate stress concentration caused by thermal expansion and contraction, vibration, or oscillation. When the object in the pipeline or container system expands, the expansion joint can freely stretch or expand to absorb these changes and maintain the integrity of the system. Similarly, when the object contracts, the expansion joint can contract or shrink to maintain the stability of the system. Expansion joints are widely used in many industrial fields, such as HVAC systems, hot water supply systems, chemical process pipelines, automotive exhaust systems, etc. They help reduce stress in the pipeline or container system, extend its service life, and provide a safer and more reliable operation.

[0003] The most common ways to connect pipelines with traditional expansion joints include flange connection, threaded connection, clamping connection, and welding connection. Flange connection is one of the most common connection methods. Both the expansion joint and the end of the pipeline have flanges, and they are connected through bolts and gaskets. Flange connection provides reliable sealing and structural support and is suitable for various pipeline systems. To ensure stable structural support, multiple groups of bolts are often set, but this makes the disassembly and installation of the expansion joint relatively cumbersome, especially when multiple groups of bolts are rusted, the disassembly of the expansion joint is particularly time-consuming. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the disassembly and installation of the pipeline connection method of the expansion joint using flange connection in the prior art are relatively cumbersome, especially when multiple groups of bolts are rusted, the disassembly of the expansion joint is particularly time-consuming, and to propose an expansion joint structure that is convenient for disassembly and assembly.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An expansion joint structure that is convenient for disassembly and assembly, including an expansion joint pipe and a transition pipe. Docking shoulders are fixedly arranged at both ends of the expansion joint pipe. Guide columns are circularly arrayed at both ends of the outer wall of the expansion joint pipe. Quick-connect rods are movably inserted into the tops of the guide columns. Rotating columns are fixedly arranged at the tops of the sides of the quick-connect rods. Transverse movement grooves are formed at the tops of the quick-connect rods. Yielding grooves are formed on the sides of the quick-connect rods. Guide blocks are rotatably connected to the outer walls of the rotating columns. The guide blocks extend into the yielding grooves. A limiting component for stably horizontally moving the quick-connect rod is fixedly arranged at the top of the yielding groove. Driving components for driving the quick-connect rods to act so that the expansion joint pipe and the transition pipe are quickly docked or separated are arranged on the outer walls at both ends of the expansion joint pipe.

[0007] Optionally, a flange is fixedly arranged at the end of the transition pipe. A docking plate is fixedly arranged at the other end of the transition pipe away from the flange. Docking grooves are circularly arrayed on the surface of the docking plate along the axial direction.

[0008] Optionally, a right-angle plate is fixedly arranged on the outer wall of the guide block. One end of a torsion spring is fixedly connected to the side of the right-angle plate, and the other end of the torsion spring is fixedly connected to the outer wall of the rotating column.

[0009] Optionally, a limiting head is fixedly arranged at one end of the quick-connect rod. The cross-sectional dimension of the limiting head is the same as that of the docking groove. A weight-reducing groove is formed at the bottom of the end of the quick-connect rod away from the limiting head. A driven column is fixedly arranged at the bottom of the weight-reducing groove of the quick-connect rod.

[0010] Optionally, the top of the guide column extends into the transverse movement groove. One end of a return spring is fixedly connected to the side wall of the transverse movement groove, and the other end of the return spring is fixedly connected to the top of the side of the quick-connect rod.

[0011] Optionally, the driving components include a driving pipe, an extension block, an auxiliary column, and a displacement screw. The driving pipe is movably sleeved on the outer wall of the expansion joint pipe.

[0012] Optionally, a pushing shoulder is fixedly arranged at the edge position of the outer wall of the driving pipe. A horizontal wall is arranged on the outer wall of the driving pipe. An inclined wall is formed on one side of the driving pipe at the horizontal wall.

[0013] Optionally, extension blocks are symmetrically and fixedly arranged on the side of the expansion joint pipe. One group of extension blocks has an auxiliary column movably inserted into the side thereof, and the other end of the auxiliary column is fixedly arranged on the driving pipe. The other group of extension blocks has a displacement screw threadedly screwed into the side thereof, and the other end of the displacement screw is rotatably arranged on the driving pipe.

[0014] Optionally, the limiting component includes a U-shaped fork, an extension head, and a locking bolt. The extension head is fixedly arranged at one end of the U-shaped fork. An adjustment groove is formed at the top of the U-shaped fork.

[0015] Optionally, after passing through the adjustment slot, the locking bolt is screwed into the position of the horizontal center line at the top of the transverse movement slot, and the inner cavity width of the U-shaped fork is smaller than the width of the transverse movement slot.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The expansion joint structure of the present invention includes an expansion joint pipe and a transition pipe. A flange is provided at one end of the transition pipe for indirect connection with the pipeline. Quick-connecting rods are evenly arranged on the outer wall of the expansion joint pipe. Under the action of the driving assembly, the expansion joint pipe and the transition pipe can be quickly separated or docked. Compared with the traditional method of fixing the expansion joint to the pipeline by using a flange and a plurality of bolts, the disassembly and assembly process is rapid, time-consuming is short, and the disassembly and assembly process is simple.

[0018] 2. Quick-connecting rods are evenly arranged on the outer wall of the collision joint pipe of the present invention, and a driving assembly is arranged at the corresponding position. Under normal conditions, one end of the quick-connecting rod is in a warped state, which is convenient for the quick connector at one end of the quick-connecting rod to cross obstacles. The driving assembly can change the state of one end of the quick-connecting rod from a warped state to a state parallel to the axis of the expansion joint pipe. The driving assembly can also make the quick-connecting rod move horizontally along the axis of the outer wall of the expansion joint pipe, pulling the two ends of the expansion joint pipe relatively towards the transition pipe. When the ordinary pipeline connected to the transition pipe by bolts contracts in cold, when the end of the ordinary pipeline moves away from its original position, it is convenient for the two ends of the expansion joint pipe to be docked with the two ends of the transition pipe, without manual stretching of the expansion joint by manpower, saving a large amount of manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is Figure 1 a semi-explosion structure schematic diagram of

[0021] Figure 3 It is a partial structure schematic diagram of the quick-release assembly.

[0022] Figure 4 It is Figure 3 a schematic diagram of another perspective structure of

[0023] Figure 5 It is a partial structure schematic diagram of the guide post and its connecting member.

[0024] Figure 6 It is a partial structure schematic diagram of the expansion pipe body.

[0025] Figure 7 It is a partial structure schematic diagram of the limiting member.

[0026] In the figure: 1, expansion joint pipe; 2, flange; 3, transition pipe; 4, docking plate; 41, docking groove; 5, quick-connect rod; 51, limit head; 52, weight-reducing groove; 53, return spring; 6, drive pipe; 61, pushing shoulder; 62, horizontal wall; 63, inclined wall; 7, extension block; 71, docking shoulder; 8, displacement screw; 81, auxiliary column; 9, relief groove; 10, extension head; 11, transverse movement groove; 12, driven column; 13, guide column; 14, guide block; 15, right-angle plate; 16, rotating column; 17, torsion spring; 18, U-shaped fork; 19, adjustment groove; 20, locking bolt. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] Refer to Figure 1-8 , an expansion joint structure that is convenient for disassembly and assembly, including an expansion joint pipe 1 and a transition pipe 3. The inner diameter and outer diameter of the expansion joint pipe 1 and the transition pipe 3 are the same. A flange 2 is fixedly arranged at the end of the transition pipe 3. At the other end of the transition pipe 3 away from the flange 2, a docking plate 4 is fixedly arranged. Docking grooves 41 are circularly arranged on the surface of the docking plate 4 along the axial direction. Docking shoulders 71 are fixedly arranged at both ends of the outer wall of the expansion joint pipe 1. The inner and outer diameters of the docking shoulders 71 are the same as those of the docking plate 4.

[0030] Guide columns 13 are circularly arranged at both ends of the outer wall of the expansion joint pipe 1. A quick-connect rod 5 is movably inserted into the top of the guide column 13. A rotating column 16 is fixedly arranged at the top side of the quick-connect rod 5. A transverse movement groove 11 is opened at the top of the quick-connect rod 5. A relief groove 9 is opened on the side of the quick-connect rod 5. A limit head 51 is fixedly arranged at one end of the quick-connect rod 5. The cross-sectional dimension of the limit head 51 is the same as the cross-sectional dimension of the docking groove 41. The limit head 51 can be inserted into the docking groove 41, so that the expansion joint pipe 1 and the transition pipe 3 can be quickly fixed or separated.

[0031] A weight-reducing groove 52 is provided at the bottom of one end of the quick-connect rod 5 away from the limit head 51 to reduce the weight of the entire quick-connect rod 5. A driven column 12 is fixedly arranged at the bottom of the weight-reducing groove 52 of the quick-connect rod 5. The outer wall of the rotating column 16 is rotatably connected to a guide block 14. A right-angle plate 15 is fixedly arranged on the outer wall of the guide block 14. The side surface of the right-angle plate 15 is fixedly connected to one end of a torsion spring 17. The other end of the torsion spring 17 is fixedly connected to the outer wall of the rotating column 16. When the torsion spring 17 is in the original length state, the limit head 51 at one end of the quick-connect rod 5 is in a warped state, so that when the expansion joint pipe 1 is docked with the transition pipe 3, the limit head 51 can smoothly overcome the obstacle.

[0032] The guide block 14 extends into the clearance groove 9, and a limit assembly is fixedly arranged on the top of the clearance groove 9 for stabilizing the lateral movement of the quick-connect rod 5. The outer walls of both ends of the expansion joint tube 1 are provided with driving assemblies for driving the quick-connect rod 5 to enable the expansion joint tube 1 and the transition tube 3 to quickly connect or separate. The driving assembly includes a driving tube 6, an extension block 7, an auxiliary column 81, and a shift screw 8.

[0033] The outer wall of the driving tube 6 is movably sleeved onto the outer wall of the expansion joint tube 1, a pushing shoulder 61 is fixedly provided at the edge of the outer wall of the driving tube 6, a horizontal wall 62 is provided on the outer wall of the driving tube 6, and an inclined wall 63 is opened on one side of the horizontal wall 62 of the driving tube 6. When the driven column 12 at the bottom of one end of the quick-connect rod 5 gradually moves along the inclined wall 63 and the horizontal wall 62, the limit head 51 at one end of the quick-connect rod 5 gradually changes from a warped state to a state flush with the axis of the expansion joint tube 1.

[0034] When the driven column 12 starts to contact the pushing shoulder 61, the driven column 12 will push the quick-connect rod 5 to move horizontally relative to it through the pushing shoulder 61. The extension blocks 7 are symmetrically fixed on the side of the expansion joint tube 1, and an auxiliary column 81 is movably inserted into the side of one group of extension blocks 7. The other end of the auxiliary column 81 is fixedly set on the driving tube 6. The side of the other group of extension blocks 7 is threaded with a shift screw 8, and the other end of the shift screw 8 is rotatably set on the driving tube 6. The auxiliary column 81 assists the driving tube 6 to move horizontally along the outer wall of the expansion joint tube 1, and the shift screw 8 can drive the driving tube 6 to move horizontally along the outer wall of the expansion joint tube 1.

[0035] The top of the guiding column 13 extends into the transverse shifting groove 11. One end of a reset spring 53 is fixedly connected to the side wall of the transverse shifting groove 11, and the other end of the reset spring 53 is fixedly connected to the top side of the quick-connect rod 5. The limiting assembly includes a U-shaped fork 18, an extension head 10, and a locking bolt 20. The extension head 10 is fixedly arranged at one end of the U-shaped fork 18. An adjustment groove 19 is formed at the top of the U-shaped fork 18. The locking bolt 20 passes through the adjustment groove 19 and is screwed into the horizontal midline position at the top of the transverse shifting groove 11. The inner cavity width of the U-shaped fork 18 is smaller than the width of the transverse shifting groove 11. The transverse position of the U-shaped fork 18 can be adjusted by the arrangement of the adjustment groove 19 and the locking bolt 20. When the driven column 12 moves from the inclined wall 63 to the horizontal wall 62, the U-shaped fork 18 can block the top of the guiding column 13, so that the quick-connect rod 5 can stably shift horizontally.

[0036] The specific steps for installing the expansion joint pipe 1 of the present invention onto a pipeline are as follows:

[0037] The transition pipe 3 is connected to the pipeline of the required system through bolts and the flange 2 at one end of the transition pipe 3. In the normal state, under the action of the torsion spring 17, the limiting head 51 is in a warped state, and the reset spring 53 is in its original length state. At this time, the limiting head 51 is at the farthest distance from both ends of the expansion joint pipe 1. Both ends of the expansion joint pipe 1 are inserted into both ends of the transition pipe 3. The shifting screw rod 8 is continuously rotated, and the shifting screw rod 8 drives the driving pipe 6 to shift horizontally along the outer wall of the expansion joint pipe 1, away from the docking shoulder 71. The driven column 12 sequentially moves from the narrowest part to the widest part of the inclined wall 63. During this period, the limiting head 51 is snapped into the docking groove 41. When the driven column 12 continues to move, it begins to contact the pushing shoulder 61, and the pushing shoulder 61 begins to pull the quick-connect rod 5 through the driven column 12, and the quick-connect rod 5 pulls one end of the expansion joint pipe 1 to one end of the transition pipe 3.

[0038] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An expansion joint structure that is convenient for disassembly and assembly, comprising an expansion joint pipe (1) and a transition pipe (3), characterized in that, Both ends of the expansion joint pipe (1) are fixedly provided with docking shoulders (71). A flange (2) is fixedly provided at the end of the transition pipe (3). A docking plate (4) is fixedly provided at the other end of the transition pipe (3) away from the flange (2). Docking grooves (41) are circularly arrayed on the surface of the docking plate (4) along the axial direction. Guide columns (13) are circularly arrayed at both ends of the outer wall of the expansion joint pipe (1). The top of the guide column (13) extends into the transverse movement groove (11). One end of the side wall of the transverse movement groove (11) is fixedly connected to one end of a return spring (53). The other end of the return spring (53) is fixedly connected to the top side of a quick-connect rod (5). The top of the guide column (13) is movably inserted into the quick-connect rod (5). A rotating column (16) is fixedly provided at the top side of the quick-connect rod (5). A transverse movement groove (11) is opened at the top of the quick-connect rod (5). A relief groove (9) is opened on the side of the quick-connect rod (5). A guide block (14) is rotatably connected to the outer wall of the rotating column (16). The guide block (14) extends into the relief groove (9). A right-angle plate (15) is fixedly provided on the outer wall of the guide block (14). One end of a torsion spring (17) is fixedly connected to the side of the right-angle plate (15). The other end of the torsion spring (17) is fixedly connected to the outer wall of the rotating column (16). A limiting component for stably transverse-moving the quick-connect rod (5) is fixedly provided at the top of the relief groove (9). Driving components for driving the quick-connect rod (5) to act so that the expansion joint pipe (1) and the transition pipe (3) are quickly docked or separated are provided on the outer walls at both ends of the expansion joint pipe (1). The driving components include a driving pipe (6), an extension block (7), an auxiliary column (81), and a displacement screw (8). The outer wall of the driving pipe (6) is movably sleeved on the outer wall of the expansion joint pipe (1). A pushing shoulder (61) is fixedly provided at the edge position of the outer wall of the driving pipe (6). A horizontal wall (62) is provided on the outer wall of the driving pipe (6). An inclined wall (63) is opened on one side of the driving pipe (6) at the horizontal wall (62). A limiting head (51) is fixedly provided at one end of the quick-connect rod (5). The cross-sectional dimension of the limiting head (51) is the same as the cross-sectional dimension of the docking groove (41). A weight-reducing groove (52) is opened at the bottom of the quick-connect rod (5) away from the limiting head (51). A driven column (12) is fixedly provided at the bottom of the weight-reducing groove (52) of the quick-connect rod (5). Extension blocks (7) are symmetrically and fixedly provided on the side of the expansion joint pipe (1). The auxiliary column (81) is movably inserted into the side of one group of the extension blocks (7). The other end of the auxiliary column (81) is fixedly provided on the driving pipe (6). The displacement screw (8) is threadedly screwed into the side of the other group of the extension blocks (7). The other end of the displacement screw (8) is rotatably provided on the driving pipe (6).

2. The expansion joint structure according to claim 1, characterized in that, The limiting component includes a U-shaped fork (18), an extension head (10), and a locking bolt (20). The extension head (10) is fixedly provided at one end of the U-shaped fork (18). An adjustment groove (19) is opened at the top of the U-shaped fork (18).

3. The expansion joint structure according to claim 2, characterized in that, The locking bolt (20) is screwed into the transverse midline position at the top of the transverse movement groove (11) after passing through the adjustment groove (19), and the inner cavity width of the U-shaped fork (18) is smaller than the width of the transverse movement groove (11).

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