Universal hinge expansion joint structure with good anti-seismic effect
By introducing a sliding sleeve and buffer shaft spring structure into the universal hinge expansion joint, the problems of local deformation and uneven stress on the pipeline caused by the vibration of the universal hinge expansion joint are solved, achieving better seismic resistance and operational stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-10
AI Technical Summary
Existing universal hinge expansion joints generate vibrations during use, leading to localized deformation and uneven stress on the pipeline, excessive structural deformation, and easy instability of the bellows.
A universal hinge expansion joint structure including a sliding sleeve, a buffer shaft, and a spring was designed. By utilizing the sliding nature of the sliding sleeve and the elasticity of the spring, vibration is buffered, and uneven stress on the bellows is avoided. The setting of a limiting sleeve and a guide groove improves stability and enhances the seismic resistance.
It effectively reduces the risk of local deformation and instability of the bellows, improves the stability and reliability of the universal hinge expansion joint, and extends its service life.
Smart Images
Figure CN121631107A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of universal hinge expansion joint, in particular to a universal hinge expansion joint structure with good anti-shock effect. BACKGROUND
[0002] The universal hinge expansion joint is a pipeline compensation device composed of a stainless steel bellows and a hinge structure, mainly used for restraining pipeline pressure thrust and absorbing displacement generated by the pipeline. The universal hinge type expansion joint is connected by two bellows through an intermediate pipe, can absorb two plane transverse displacements and axial displacements perpendicular to each other, and is suitable for complex pipeline systems to reduce stress generated by thermal expansion and contraction and vibration.
[0003] At present, the intermediate connecting plate of the universal hinge expansion joint is usually fixedly connected to the intermediate connecting pipe by welding. However, the universal hinge type expansion joint will generate some vibrations during use, which will adversely affect the expansion joint, easily cause local deformation of the pipeline, uneven stress structure, excessive structural deformation, and instability of the bellows. SUMMARY
[0004] (I) Technical problems solved In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a universal hinge expansion joint structure with good anti-shock effect, so as to solve the problems that the universal hinge type expansion joint in the prior art generates some vibrations during use, which will adversely affect the expansion joint, easily cause local deformation of the pipeline, uneven stress structure, excessive structural deformation, and instability of the bellows.
[0005] (II) Technical solutions In order to achieve the above-mentioned purpose, the present application provides the following technical solutions: A universal hinge expansion joint structure with good anti-shock effect, comprising two bellows, a connecting pipe fixedly connected between the two bellows, and a sliding sleeve sleeved on the top of the connecting pipe, an outer surface of the sliding sleeve is fixedly connected with a plurality of mounting shafts arranged in an annular array, and the mounting shafts are fixedly connected with mounting sleeves on the outer side, the outer surface of the connecting pipe is fixedly connected with a plurality of limiting sleeves, and the limiting sleeves are located on both sides of the sliding sleeve, a plurality of mounting holes are formed on both sides of the sliding sleeve, springs are inserted into the mounting holes, the other end of the spring is fixedly connected with a buffer shaft, and the other end of the buffer shaft is in contact with the inner wall of the limiting sleeve.
[0006] Further, two connecting ears are integrally formed at both ends of the mounting sleeve, and the connecting ears are fixedly connected with connecting plates on one side.
[0007] On the basis of the foregoing scheme, two ends of the two bellows are fixedly connected with end pipes, and the two sides of the end pipes are fixedly connected with fixed plates, one end of the fixed plates is fixedly connected with hinge plates, and a balance ring is arranged between the hinge plates and the connecting ears.
[0008] As a further scheme of the present application, the hinge plate is a C-shaped structure.
[0009] Further, first fixed pins are inserted between the connecting ears, the balance ring and the connecting plates, and second fixed pins are inserted between the hinge plates and the balance ring.
[0010] On the basis of the foregoing scheme, one side of the balance ring is located between the connecting ears and the connecting plates, and the other side of the balance ring is located between the connecting plates.
[0011] As a further scheme of the present application, a plurality of guide grooves are formed in the outer surface of the sliding sleeve, and a guide plate is fixedly connected to the inner wall of the limiting sleeve and is slidingly connected in the guide grooves.
[0012] Further, the limiting sleeve is a Z-shaped structure.
[0013] (Three) beneficial effects Compared with the prior art, the present application provides a universal hinge expansion joint structure with good anti-shock effect, which has the following beneficial effects: 1. The present application sets up a slidable sliding sleeve, which avoids hard connection under the elastic action of the buffer shaft and the spring. When vibration occurs, the left and right buffers can avoid uneven stress on the two sides of the bellows, which is not easy to cause local deformation of the bellows, the stress structure is uniform, the structural deformation is reduced, the instability of the bellows is avoided, and the anti-shock effect is good.
[0014] 2. The present application sets up a mounting sleeve on the outer surface of the two sides of the bellows, which plays a guiding and supporting role on the universal hinge expansion joint. It not only can improve the stability and reliability of the universal hinge expansion joint, but also can protect the bellows from damage caused by external force, thereby affecting the service life of the universal hinge expansion joint. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 A perspective structural schematic view of the universal hinge expansion joint structure with good anti-shock effect according to the present application is provided. Figure 2 A side view structural schematic view of the universal hinge expansion joint structure with good anti-shock effect according to the present application is provided. Figure 3 An exploded structural schematic view of the universal hinge expansion joint structure with good anti-shock effect according to the present application is provided. Figure 4Part of the enlarged structure schematic diagram of the universal hinge expansion joint structure with good anti-seismic effect is provided for the present application. Figure 5 Part of the cross-sectional structure schematic diagram of the universal hinge expansion joint structure with good anti-seismic effect is provided for the present application. Figure 6 The limiting sleeve structure schematic diagram of the universal hinge expansion joint structure with good anti-seismic effect is provided for the present application.
[0016] In the figure: 1, corrugated pipe; 2, connecting pipe; 3, sliding sleeve; 301, guide groove; 302, spring; 303, buffer shaft; 4, mounting shaft; 5, mounting sleeve; 6, limiting sleeve; 601, guide plate; 7, connecting lug; 8, end pipe; 9, fixed plate; 10, hinge plate; 11, connecting plate; 12, balance ring; 13, first fixed pin; 14, second fixed pin. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0018] REFERENCE Figures 1-6 A universal hinge expansion joint structure with good anti-seismic effect, comprising two corrugated pipes 1, a connecting pipe 2 welded between the two corrugated pipes 1, and a sliding sleeve 3 sleeved on the top of the connecting pipe 2, a plurality of mounting shafts 4 annularly welded on the outer surface of the sliding sleeve 3, and a mounting sleeve 5 fixed on the outer side of the mounting shaft 4 by bolts, two connecting lugs 7 integrally formed at both ends of the mounting sleeve 5, and a connecting plate 11 welded on one side of each connecting lug 7. A plurality of limiting sleeves 6 are fixed on the outer surface of the connecting pipe 2 by bolts, the limiting sleeves 6 are Z-shaped structures, and the limiting sleeves 6 are located on both sides of the sliding sleeve 3, a plurality of mounting holes are formed on both sides of the sliding sleeve 3, springs 302 are inserted into the mounting holes, buffer shafts 303 are fixed on the other ends of the springs 302 by bolts, and the other ends of the buffer shafts 303 are in contact with the inner walls of the limiting sleeves 6. Through the movable structure of the sliding sleeve 3 and the elastic action of the buffer shafts 303 and the springs 302, hard connection is avoided, and when vibration occurs, left and right buffering can be achieved to avoid uneven stress on the two corrugated pipes 1, which is not easy to cause local deformation of the corrugated pipes 1, the stress structure is uniform, the structural deformation is reduced, the corrugated pipes 1 are prevented from losing stability, and the anti-seismic effect is good. The two corrugated pipes 1 are respectively fixed at both ends by bolts, and the two sides of the end pipes 8 are fixed by bolts, the fixed plates 9 are welded on one end of each end pipe 8, and the hinge plates 10 are C-shaped structures. Wherein, the balance ring 12 is arranged between the hinge plate 10 and the connecting lug 7, the first fixed pin 13 is inserted between the connecting lug 7, the balance ring 12 and the connecting plate 11, and the second fixed pin 14 is inserted between the hinge plate 10 and the balance ring 12.
[0019] Wherein, one side of the balance ring 12 is located between the connecting lug 7 and the connecting plate 11, and the other side of the balance ring 12 is located between the connecting plates 11.
[0020] Wherein, a plurality of guide grooves 301 are arranged on the outer surface of the sliding sleeve 3, a guide plate 601 is welded on the inner wall of the limiting sleeve 6, the guide plate 601 is slidingly connected in the guide groove 301, and the guide groove 301 and the guide plate 601 are used in cooperation to guide the sliding of the sliding sleeve 3, thereby improving the stability of the buffer.
[0021] The working principle of the embodiment is as follows: the universal hinge type expansion joint comprises a connecting pipe 2, two corrugated pipes 1 and two end pipes 8, the two corrugated pipes 1 are arranged at two ends of the connecting pipe 2, one end of each corrugated pipe 1 away from the connecting pipe 2 is provided with an end pipe 8, a sliding sleeve 3 is sleeved on the outer wall of the connecting pipe 2, the sliding sleeve 3 is slidingly connected with the connecting pipe 2, a balance ring 12 is sleeved on the outer periphery of each corrugated pipe 1, two fixed plates 9 and a hinge plate 10 are uniformly distributed on the outer wall of each corrugated pipe 1, the hinge plate 10 is rotatably connected with the balance ring 12 through a second fixed pin 14, an installation sleeve 5 is fixedly connected to the outer surface of the sliding sleeve 3, connecting lugs 7 are arranged on both sides of the installation sleeve 5, connecting plates 11 are arranged at the bottom of each connecting lug 7, the connecting lug 7, the connecting plate 11 and the balance ring 12 are rotatably connected through a first fixed pin 13, a plurality of springs 302 and buffer shafts 303 are arranged on both sides of the sliding sleeve 3, the buffer shafts 303 are in contact with the inner wall of the limiting sleeve 6 installed on the sliding sleeve 3, and the sliding sleeve 3 can move left and right.
[0022] In this way, when the end pipe 8 changes in angle during use, the balance ring 12 also changes in angle, the hinge plate 10 rotates around the second fixed pin 14, and the connecting plate 11 and the connecting lug 7 rotate around the first fixed pin 13, when one side of the end pipe 8 is stressed, the corrugated pipe 1 on one side is compressed, the sliding sleeve 3 sliding on the connecting pipe 2 is elastically deformed under the elastic action of the buffer shaft 303 and the spring 302, thereby avoiding hard connection, when vibration occurs, the left and right buffers can be used to avoid uneven stress on the corrugated pipes 1 on both sides, the corrugated pipes 1 are not easy to deform locally, the stress structure is uniform, the structural deformation is reduced, and the corrugated pipes 1 are prevented from losing stability.
[0023] The electrical components appearing in the text are all connected with the main controller and 220V mains electricity, and the main controller can be a conventional known device such as a computer.
[0024] In the description in this document, it is necessary to point out that, unless explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected, can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0025] In the description in this document, it is necessary to point out that the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or equipment.
[0026] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A universal hinge expansion joint structure with good anti-seismic effect, comprising two bellows (1), characterized in that, Two corrugated pipes (1) are fixedly connected with a connecting pipe (2), and the top of the connecting pipe (2) is sleeved with a sliding sleeve (3), the outer surface of the sliding sleeve (3) is fixedly connected with a plurality of mounting shafts (4) in an annular array, and the outer side of the mounting shaft (4) is fixedly connected with a mounting sleeve (5), the outer surface of the connecting pipe (2) is fixedly connected with a plurality of limiting sleeves (6), and the limiting sleeves (6) are located on both sides of the sliding sleeve (3), a plurality of mounting holes are formed in both sides of the sliding sleeve (3), and the mounting holes are inserted with springs (302) inside, the other end of the spring (302) is fixedly connected with a buffer shaft (303), and the other end of the buffer shaft (303) is in contact with the inner wall of the limiting sleeve (6).
2. The universal hinge expansion joint structure according to claim 1, characterized in that, Both ends of the mounting sleeve (5) are integrally formed with two connecting ears (7), and one side of the connecting ear (7) is fixedly connected with a connecting plate (11).
3. The universal hinge expansion joint structure of claim 2, wherein, Both ends of the two corrugated pipes (1) are fixedly connected with end pipes (8), and the two sides of the end pipe (8) are fixedly connected with fixed plates (9), one end of the fixed plate (9) is fixedly connected with a hinge plate (10), and the hinge plate (10) and the connecting ear (7) are provided with a gimbal ring (12).
4. The universal hinge expansion joint structure according to claim 3, characterized in that, The hinge plate (10) is a C-shaped structure.
5. The universal hinge expansion joint structure according to claim 4, characterized in that, The connecting ear (7), the gimbal ring (12) and the connecting plate (11) are inserted with a first fixed pin (13), and the hinge plate (10) and the gimbal ring (12) are inserted with a second fixed pin (14).
6. The universal hinge expansion joint structure according to claim 5, characterized in that, One side of the gimbal ring (12) is located between the connecting ear (7) and the connecting plate (11), and the other side of the gimbal ring (12) is located between the connecting plates (11).
7. The universal hinge expansion joint structure of claim 1, wherein, The outer surface of the sliding sleeve (3) is provided with a plurality of guide grooves (301), and the inner wall of the limiting sleeve (6) is fixedly connected with a guide plate (601), and the guide plate (601) is slidingly connected in the guide groove (301).
8. The universal hinge expansion joint structure of claim 7, wherein, The limiting sleeve (6) is a Z-shaped structure.