A novel SAE flange quick-assembly and disassembly structure
By introducing connecting columns and locking blocks/slots into SAE flanges, the problem of time-consuming assembly and disassembly of traditional flanges has been solved, enabling rapid assembly and disassembly and stable connection, thereby improving work efficiency and equipment lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANCHENG XINFUJIET MASCH CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-26
AI Technical Summary
The traditional four-hole bolt fixing method for SAE flanges is difficult and time-consuming to operate in narrow spaces, reducing work efficiency and increasing labor costs.
The design employs a connecting post between the upper and lower flanges, combined with cross-shaped and triangular locking blocks and slots, to achieve a quick assembly and disassembly structure and simplify bolt operations.
The quick-assembly and disassembly of flanges improves operational efficiency, enhances connection stability, reduces operational difficulty, and extends equipment lifespan.
Smart Images

Figure CN224283839U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of SAE flange disassembly and assembly technology, and in particular to a novel SAE flange quick disassembly and assembly structure. Background Technology
[0002] In industrial production and various mechanical equipment connection systems, flanges play a crucial role as vital components connecting pipes, containers, and other equipment. Traditional SAE flanges are widely used in numerous fields such as automobiles and construction machinery. However, their four-hole bolt fixing method has significant drawbacks. During equipment installation, maintenance, or repair, workers need to use tools to tighten or loosen each bolt individually. This increases the difficulty of operation when the working environment is confined; moreover, for systems that extensively use flange connections, the frequent bolt removal and installation process is very time-consuming, significantly reducing work efficiency and increasing labor costs. Therefore, we propose a new type of SAE flange quick-release and installation structure to solve the above problems. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a novel quick-assembly and disassembly structure for SAE flanges.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A novel SAE flange quick-assembly and disassembly structure includes an upper flange and a lower flange. A sealing gasket is provided between the upper and lower flanges. Connecting columns are fixed on both sides of the lower end of the upper flange. The connecting columns pass through the sealing gasket and the lower flange and extend to the lower end of the lower flange. Nuts are threaded onto the lower ends of the connecting columns. Fixing plates are fixed on both sides of the lower end of the lower flange. Studs are rotatably sleeved on the fixing plates. A rotating block is fixed to one end of the stud. A cross-shaped moving groove is provided on one side of the fixing plate. A cross-shaped locking block is engaged in the cross-shaped moving groove. One end of the cross-shaped locking block is threaded onto the stud. One cross-shaped locking block on the same side is engaged with one connecting column on the same side.
[0006] Preferably, the sealing gasket has mounting holes on both sides, the lower flange has connecting holes on both sides, and a connecting post on the same side passes through a mounting hole and a connecting hole on the same side and extends to the lower end of the lower flange.
[0007] Preferably, a washer is fitted at the lower end of the connecting post, and the upper end of the nut abuts against the lower end of the washer.
[0008] Preferably, a bearing is installed on one side of the fixing plate, and the stud is mounted on the bearing.
[0009] Preferably, a cross-shaped slot is provided on one side of the upper end of the connecting column, and a cross-shaped block on the same side is engaged in a cross-shaped slot on the same side.
[0010] Preferably, a triangular locking block is threaded onto the stud, a triangular moving groove is provided on one side of the fixing plate, the triangular locking block is engaged in the triangular moving groove, a triangular groove is provided on one side of the connecting column, and a triangular locking block on the same side is engaged in a triangular groove on the same side.
[0011] In this utility model, installation is required:
[0012] 1. Initial connection: When installing the flange, first accurately connect the upper and lower flanges. During the connection process, ensure that the gasket between the upper and lower flanges is correctly placed. Its function is to ensure the sealing of the two flanges after connection and prevent media leakage.
[0013] 2. Through-connecting column: The connecting columns fixed on both sides of the lower end of the upper flange pass through the mounting holes of the sealing gasket and the connecting holes of the lower flange in sequence, and extend to the lower end of the lower flange to ensure smooth passage of the connecting column and avoid jamming or displacement.
[0014] 3. Tighten the nut: After putting the washer on the lower end of the connecting column, use a tool to tighten the nut on the lower end of the connecting column. The washer plays a role in buffering and dispersing pressure, preventing damage to the upper and lower flanges during the tightening process.
[0015] 4. Rotating the studs to drive the locking blocks: Studs are rotatably fitted onto the fixing plates on both sides of the lower flange. The studs are connected to the fixing plates through bearings to ensure that the studs can rotate flexibly. By rotating the rotating block, the studs are driven to rotate in place. Since the studs are threaded with cross-shaped or triangular locking blocks, and they are respectively locked into the corresponding cross-shaped or triangular moving grooves on the fixing plates, when the studs rotate, the cross-shaped and triangular locking blocks will move linearly along the corresponding moving grooves and lock into the cross-shaped locking grooves or triangular grooves on the connecting column, thereby strengthening and supporting the connecting column.
[0016] This utility model has the following advantages:
[0017] 1. The quick-assembly and disassembly structure simplifies the installation and disassembly process of flanges, eliminating the need to loosen and tighten multiple bolts one by one as in the traditional method. This greatly saves operation time and improves work efficiency. For equipment installation and maintenance work with large-scale flange connections, the efficiency improvement is even more significant.
[0018] 2. The cross-shaped and triangular locking blocks, along with the corresponding slots and grooves on the connecting column, can reinforce the connecting column from multiple directions. Compared to the traditional four-hole bolt connection method, the connection is more stable and reliable when subjected to external forces such as vibration and pressure, reducing problems such as leakage caused by loosening and extending the service life of the equipment.
[0019] 3. It reduces the workload of operators in handling multiple bolts with tools, especially in narrow spaces or complex environments, reducing the difficulty of operation and thus alleviating the labor intensity of operators;
[0020] In summary, this utility model can meet the needs of different fields for rapid installation and maintenance of flange connections. Unlike traditional methods, it eliminates the need to loosen and tighten multiple bolts one by one, greatly saving operation time and improving work efficiency. It can also reinforce the connecting column from multiple directions. Compared with the traditional four-hole bolt connection method, the connection is more stable and reliable when subjected to external forces such as vibration and pressure, thus extending its service life. Attached Figure Description
[0021] Figure 1 This is a diagram illustrating the dispersed structure of this utility model;
[0022] Figure 2 This is a combined structural diagram of the present invention;
[0023] Figure 3 A structural diagram showing the cross-shaped slot of this utility model;
[0024] Figure 4 A structural diagram showing the cross-shaped locking block of this utility model;
[0025] Figure 5 A structural diagram of the triangular card block of this utility model;
[0026] Figure 6 This is a structural diagram showing the triangular groove of this utility model.
[0027] In the diagram: 1 Upper flange, 2 Connecting column, 3 Sealing gasket, 4 Mounting hole, 5 Connecting hole, 6 Lower flange, 7 Fixing plate, 8 Rotating block, 9 Cross-shaped groove, 10 Washer, 11 Nut, 12 Cross-shaped locking block, 13 Stud, 14 Bearing, 15 Triangular locking block, 16 Triangular groove. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0029] Reference Figure 1-6A novel SAE flange quick-assembly and disassembly structure includes an upper flange 1 and a lower flange 6. A sealing gasket 3 is provided between the upper flange 1 and the lower flange 6. Connecting columns 2 are fixed on both sides of the lower end of the upper flange 1. The connecting columns 2 are evenly installed on both sides and play a connecting role between the upper flange 1 and the lower flange 6, which can make the connection force more even and ensure the connection stability. The fixed installation method can enhance the connection strength between the connecting columns 2 and the upper flange 1 and prevent the connecting columns 2 from loosening during use.
[0030] The connecting column 2 passes through the sealing gasket 3 and the lower flange 6 and extends to the lower end of the lower flange 6. The lower end of the connecting column 2 is threaded with a nut 11. The lower ends of the lower flange 6 are fixed with fixing plates 7 on both sides. The fixing plate 7 is rotatably sleeved with a stud 13. One end of the stud 13 is fixed with a rotating block 8. One side of the fixing plate 7 is provided with a cross-shaped moving groove. A cross-shaped locking block 12 is engaged in the cross-shaped moving groove. One end of the cross-shaped locking block 12 is threaded onto the stud 13. One cross-shaped locking block 12 on the same side is engaged with one connecting column 2 on the same side. The rotating block 8 is fixed on the stud 13, which facilitates the operator to rotate the stud 13.
[0031] The sealing gasket 3 has mounting holes 4 on both sides, and the lower flange 6 has connecting holes 5 on both sides. A connecting post 2 on the same side passes through a mounting hole 4 and a connecting hole 5 on the same side and extends to the lower end of the lower flange 6. The dimensions of the mounting hole 4 and the connecting hole 5 are precisely matched with the diameter of the connecting post 2 to ensure the stability of the connecting post 2 when it passes through, and to avoid affecting the sealing and stability of the flange connection due to dimensional deviation.
[0032] A washer 10 is fitted at the lower end of the connecting post 2, and the upper end of the nut 11 abuts against the lower end of the washer 10. The stud 13 plays a fastening role in the connection by cooperating with the nut 11. The washer 10 is made of rubber, metal or composite materials depending on the working environment and is placed between the nut 11 and the connecting parts.
[0033] A bearing 14 is installed on one side of the fixing plate 7, and a stud 13 is installed on the bearing 14. The bearing 14 is installed on the stud 13, and its function is to reduce the friction when the stud 13 rotates and improve the flexibility of the stud 13 rotation.
[0034] A cross-shaped groove 9 is provided on one side of the upper end of the connecting column 2. A cross-shaped block 12 on the same side is engaged in the cross-shaped groove 9 on the same side. The cross-shaped groove 9 and the cross-shaped block 12 cooperate with each other. The cross-shaped block 12 is engaged in the cross-shaped groove 9 of the connecting column 2, which can constrain the connecting column 2 from two mutually perpendicular directions, preventing it from shifting and rotating on the horizontal plane, making the flange connection structure more stable. The cross-shaped shape is highly versatile and can be adapted to the connection of various flange specifications.
[0035] A triangular locking block 15 is threaded onto the stud 13. A triangular moving groove is provided on one side of the fixing plate 7, and the triangular locking block 15 is engaged in the triangular moving groove. A triangular groove 16 is provided on one side of the connecting column 2. A triangular locking block 15 on the same side is engaged in a triangular groove 16 on the same side. The triangular groove 16 and the triangular locking block 15 cooperate with each other. After the triangular locking block 15 is engaged in the triangular groove 16, the mechanical stability of the triangle is used to disperse and bear pressure and tension in different directions, avoid local stress concentration, extend the service life of the flange connection and improve safety. The triangular locking block 15 or the cross-shaped locking block 12 can be selected as needed.
[0036] In this utility model, installation is required:
[0037] 1. Initial connection: When installing the flange, first accurately connect the upper flange 1 and the lower flange 6. During the connection process, it is necessary to ensure that the sealing gasket 3 between the upper flange 1 and the lower flange 6 is correctly placed. Its function is to ensure the sealing of the two flanges after connection and prevent media leakage.
[0038] 2. Through-connecting column: The connecting columns 2, which are fixed on both sides of the lower end of the upper flange 1, pass through the mounting holes 4 of the sealing gasket 3 and the connecting holes 5 of the lower flange 6 in sequence, and extend to the lower end of the lower flange 6 to ensure smooth passage of the connecting column 2 and avoid jamming or displacement.
[0039] 3. Tighten the nut: After putting the washer 10 on the lower end of the connecting column 2, use a tool to tighten the nut 11 onto the lower end of the connecting column 2. The washer 10 plays a role in buffering and dispersing pressure, preventing the nut 11 from damaging the upper flange 1 and the lower flange 6 during the tightening process.
[0040] 4. Rotating the studs to drive the locking blocks: Studs 13 are rotatably sleeved on the fixing plates 7 on both sides of the lower end of the lower flange 6. The studs 13 are connected to the fixing plates 7 through bearings 14 to ensure that the studs 13 can rotate flexibly. By rotating the rotating block 8, the studs 13 are driven to rotate in place. Since the studs 13 are threaded with cross-shaped locking blocks 12 or triangular locking blocks 15, and are respectively locked in the corresponding cross-shaped moving grooves or triangular moving grooves of the fixing plates 7, when the studs 13 rotate, the cross-shaped locking blocks 12 and triangular locking blocks 15 will move linearly along the corresponding moving grooves and be locked into the cross-shaped locking grooves 9 or triangular grooves 16 on the connecting column 2, thereby strengthening and supporting the connecting column 2.
[0041] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A novel SAE flange quick-assembly and disassembly structure, comprising an upper flange (1) and a lower flange (6), characterized in that, A sealing gasket (3) is provided between the upper flange (1) and the lower flange (6). Connecting columns (2) are fixed on both sides of the lower end of the upper flange (1). The connecting columns (2) pass through the sealing gasket (3) and the lower flange (6) and extend to the lower end of the lower flange (6). A nut (11) is threaded onto the lower end of the connecting column (2). A fixing plate (7) is fixed on both sides of the lower end of the lower flange (6). A stud (13) is rotatably sleeved on the fixing plate (7). A rotating block (8) is fixed at one end of the stud (13). A cross-shaped moving groove is provided on one side of the fixing plate (7). A cross-shaped locking block (12) is engaged in the cross-shaped moving groove. One end of the cross-shaped locking block (12) is threaded onto the stud (13). A cross-shaped locking block (12) on the same side is engaged on a connecting column (2) on the same side.
2. The novel SAE flange quick-assembly and disassembly structure according to claim 1, characterized in that: The sealing gasket (3) has mounting holes (4) on both sides, and the lower flange (6) has connecting holes (5) on both sides. A connecting post (2) on the same side passes through a mounting hole (4) and a connecting hole (5) on the same side and extends to the lower end of the lower flange (6).
3. The novel SAE flange quick-assembly and disassembly structure according to claim 1, characterized in that: The lower end of the connecting column (2) is fitted with a washer (10), and the upper end of the nut (11) abuts against the lower end of the washer (10).
4. The novel SAE flange quick-assembly and disassembly structure according to claim 1, characterized in that: A bearing (14) is installed on one side of the fixing plate (7), and the stud (13) is installed on the bearing (14).
5. The novel SAE flange quick-assembly and disassembly structure according to claim 1, characterized in that: The upper end of the connecting column (2) is provided with a cross-shaped slot (9), and a cross-shaped block (12) on the same side is engaged in a cross-shaped slot (9) on the same side.
6. The novel SAE flange quick-assembly and disassembly structure according to claim 1, characterized in that: A triangular locking block (15) is threaded onto the stud (13). A triangular moving groove is provided on one side of the fixing plate (7). The triangular locking block (15) is locked in the triangular moving groove. A triangular groove (16) is provided on one side of the connecting column (2). A triangular locking block (15) on the same side is locked in a triangular groove (16) on the same side.