A cast steel member for facilitating connection

Abstract

The utility model relates to cast steel piece technical field discloses a cast steel piece convenient to connect, including cast steel piece no.

Description

Technical Field

[0001] This utility model relates to the field of cast steel parts technology, and in particular to a cast steel part that is easy to connect. Background Technology

[0002] Cast steel components, as key parts in the industrial field that bear heavy loads and adapt to complex working conditions, are widely used in engineering machinery, pipeline systems, heavy equipment, and other fields. In actual assembly and use, the connection efficiency and stability of cast steel components directly affect the overall equipment's installation progress, operational safety, and ease of maintenance. Especially in the modular assembly of large equipment or on-site emergency repair scenarios, the demand for rapid docking, precise positioning, and reliable locking of cast steel components is becoming increasingly prominent. Therefore, developing cast steel components that are easy to connect has become an important direction for improving industrial production efficiency.

[0003] In existing technologies, the connection of cast steel parts mostly adopts traditional flange connections or welding methods. Flange connections are fixed by bolts passing through the through holes of two flanges and tightening them with nuts. The technical principle is to use the preload of the bolts to ensure a tight fit between the flange faces, relying on a gasket between the flange faces for sealing. Welding, on the other hand, involves melting the connecting ends of the cast steel parts at high temperatures, fusing the materials to form a monolithic structure, and using intermolecular bonding forces to ensure connection strength. In addition, some scenarios use pin connections, where a pin passes through the shaft holes of two cast steel parts, supplemented by cotter pins or retaining rings to restrict axial displacement, achieving a detachable connection.

[0004] However, existing technologies have significant limitations in practical applications: traditional flange connections require precise alignment of multiple bolt holes, making the positioning process cumbersome and time-consuming, especially when connecting heavy cast steel parts, where manual labor alone cannot guarantee positioning accuracy; although welding can achieve high-strength connections, it cannot be easily disassembled, and the welding process is prone to stress concentration, affecting the performance of the cast steel parts; pin connections are prone to loosening under vibration conditions, leading to decreased connection stability and making it difficult to meet the requirements for long-term reliable operation. Therefore, a cast steel part that is easy to connect is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a cast steel part that is easy to connect, aiming to improve the problems of inaccurate positioning, cumbersome installation, and easy loosening due to vibration in the connection of cast steel parts in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cast steel component that is easy to connect includes a first cast steel component, a second cast steel component provided on one side wall of the first cast steel component, a fixing component provided on one side wall of the second cast steel component, and a sealing component provided inside the first cast steel component and the second cast steel component.

[0008] The fixing assembly includes a first retaining ring and a second retaining ring. The side wall of the second retaining ring is rotatably connected to the side wall of the first retaining ring. The side walls of the first cast steel part and the second cast steel part are slidably connected inside the first retaining ring and the second retaining ring. A first retaining sleeve is fixedly connected to the side wall of the first retaining ring. A first retaining hook is fixedly connected inside the first retaining sleeve. A second retaining sleeve is fixedly connected to the side wall of the second retaining ring. A second retaining hook is slidably connected inside the second retaining sleeve. A first spring is provided inside the second retaining sleeve. One end of the first spring is fixedly connected to the inside of the second retaining sleeve. The other end of the first spring is fixedly connected to the side wall of the second retaining hook. A pressing plate is fixedly connected to the side wall of the second retaining hook.

[0009] As a further description of the above technical solution:

[0010] The sealing assembly includes an O-ring, the sidewall of which is slidably connected inside the first cast steel part and the second cast steel part.

[0011] As a further description of the above technical solution:

[0012] The side wall of the pressing plate is slidably connected inside the second sleeve, and the first hook engages with the second hook.

[0013] As a further description of the above technical solution:

[0014] A fixing bolt is threaded to one side wall of the ferrule. The fixing bolt is slidably connected to the inside of the second ferrule. A self-locking nut is threaded to the side wall of the fixing bolt. Multiple positioning blocks are fixedly connected to one side wall of the cast steel part. The positioning blocks are slidably connected to the inside of the second cast steel part.

[0015] As a further description of the above technical solution:

[0016] Both cast steel part one and cast steel part two are internally fixedly connected to heat insulation rings, and the sidewalls of the heat insulation rings are fixedly connected to mounting sleeves.

[0017] As a further description of the above technical solution:

[0018] The mounting sleeve has a sliding connection with a sealing gasket, and the sidewall of the sealing gasket is attached to the sidewall of the O-ring.

[0019] As a further description of the above technical solution:

[0020] A second spring is provided inside the mounting sleeve. One end of the second spring is fixedly connected inside the mounting sleeve, and the other end of the second spring is fixedly connected to the side wall of the sealing gasket.

[0021] As a further description of the above technical solution:

[0022] A sealing lip one is fixedly connected to the side wall of the sealing gasket, and a sealing lip two is fixedly connected to the side wall of the sealing gasket. The sealing lip one and the sealing lip two are slidably connected inside the cast steel part one and the cast steel part two.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, through the three-level collaborative structure of precise docking of positioning blocks, pre-fixing of hooks and final tightening of bolts, cast steel part one and cast steel part two can achieve rapid positioning and reliable locking, thereby achieving a convenient, efficient and stable connection. This solves the problems of inaccurate positioning, cumbersome installation and easy loosening due to vibration when connecting existing cast steel parts. The above structure improves the connection efficiency and stability of cast steel parts.

[0025] 2. In this utility model, the heat insulation ring blocks heat transfer and protects the sealing components. At the same time, the spring pushes the sealing gasket to squeeze the O-ring. The double-lip structure of the sealing gasket and the O-ring form a double sealing defense, enabling the sealing assembly to achieve efficient sealing and thus prevent media leakage. This solves the problem that the existing cast steel sealing structure is easily affected by high temperature and has insufficient sealing reliability. The above structure improves the sealing performance and durability of the cast steel connection. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a cast steel part that is easy to connect, as proposed in this utility model.

[0027] Figure 2 This is an exploded view of the structure of a cast steel part that is easy to connect, as proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the internal structure of a ferrule for easy connection of cast steel parts proposed in this utility model;

[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 This is a schematic diagram of the structure of a mounting sleeve for a cast steel part that is easy to connect, as proposed in this utility model.

[0031] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0032] Legend:

[0033] 1. Cast steel part one; 2. Cast steel part two; 3. Snap ring one; 4. Snap ring two; 5. Sleeve one; 6. Sleeve two; 7. Hook one; 8. Hook two; 9. Press plate; 10. Spring one; 11. Positioning block; 12. O-ring; 13. Mounting sleeve; 14. Heat insulation ring; 15. Spring two; 16. Sealing gasket; 17. Sealing lip one; 18. Sealing lip two; 19. Fixing bolt; 20. Self-locking nut. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figures 1-4 The present invention provides an embodiment of a cast steel component that is easy to connect, comprising a cast steel component 1, a cast steel component 2 disposed on the side wall of the cast steel component 1, and a fixing component disposed on the side wall of the cast steel component 1. The fixing component is used to realize the quick connection and stable fixation of the cast steel component 1 and the cast steel component 2, achieving the effect of efficient assembly and reliable load bearing; a sealing component is disposed inside the cast steel component 1 and the cast steel component 2, which is used to block the leakage of the medium, achieving the effect of sealing and preventing leakage.

[0036] The fixing components include a first retaining ring 3 and a second retaining ring 4, both made of alloy steel. Their function is to provide rigid support and enclose the connecting parts. The side wall of the second retaining ring 4 is rotatably connected to the side wall of the first retaining ring 3. The second retaining ring 4 cooperates with the first retaining ring 3 to open and close, achieving the effect of quickly fitting or separating the cast steel parts. The side walls of the first cast steel part 1 and the second cast steel part 2 are slidably connected inside the first retaining ring 3 and the second retaining ring 4. A first retaining sleeve 5 is fixedly connected to the side wall of the first retaining ring 3, and a first retaining hook 7 is fixedly connected inside the first retaining sleeve 5. A second retaining sleeve 6 is fixedly connected to the side wall of the second retaining ring 4, and a second retaining hook 8 is slidably connected inside the second retaining sleeve 6. A spring 1 is installed inside the second retaining sleeve 6. 10. Spring 10 provides elastic driving force. One end of spring 10 is fixedly connected to the inside of sleeve 2 6, and the other end of spring 10 is fixedly connected to the side wall of hook 2 8. Spring 10 moves in conjunction with hook 2 8 to achieve the effect of hook 2 8 automatically popping out and engaging with hook 1 7. A pressing plate 9 is fixedly connected to the side wall of hook 2 8. The pressing plate 9 is used to drive hook 2 8 to compress spring 10, thereby releasing the engagement. The side wall of the pressing plate 9 is slidably connected to the inside of sleeve 2 6. Hook 1 7 engages with hook 2 8. Hook 1 7 moves in conjunction with hook 2 8 to achieve the effect of temporary pre-fixation of the cast steel part.

[0037] The side wall of ferrule 5 is threaded with a fixing bolt 19, which is made of high-strength alloy and serves to provide tightening force. The side wall of fixing bolt 19 is slidably connected inside ferrule 6. The side wall of fixing bolt 19 is threaded with a self-locking nut 20, which cooperates with fixing bolt 19 to perform threaded locking movement, thereby preventing loosening and enhancing connection stability. The side wall of cast steel part 1 is fixedly connected with multiple positioning blocks 11. The positioning blocks 11 are used to embed into cast steel part 2 to achieve precise docking, thereby limiting circumferential rotation and ensuring positioning accuracy. The side wall of positioning block 11 is slidably connected inside cast steel part 2.

[0038] The aforementioned fixing components consist of positioning block 11, retaining ring 1 3, retaining ring 2 4, retaining sleeve 1 5, retaining sleeve 2 6, retaining hook 1 7, retaining hook 2 8, spring 10, fixing bolt 19 and self-locking nut 20. Through the synergistic effect of initial positioning by positioning block 11, pre-fixing by retaining hook and final tightening by bolt, the effect of rapid docking, precise positioning and long-term stable connection of cast steel parts is achieved.

[0039] Reference Figures 5-6 The sealing assembly includes an O-ring 12, which is made of rubber and functions to fill gaps through elastic deformation to achieve a seal. The sidewall of the O-ring 12 is slidably connected inside cast steel part 1 and cast steel part 2. Both cast steel parts 1 and 2 have fixedly connected heat insulation rings 14, which are made of asbestos fiber composite material and have good heat insulation properties. The heat insulation rings 14 are used to block heat transfer to the sealing components, thus protecting the sealing assembly and preventing it from aging and failing due to high temperatures. An installation sleeve 13 is fixedly connected to the sidewall of the heat insulation ring 14. A sealing gasket 16 is slidably connected inside the installation sleeve 13. The sidewall of the sealing gasket 16 is fitted against the sidewall of the O-ring 12, and the sealing gasket 16 is used to compress the O-ring 12 and form a seal. The sealing gasket 16 is designed to enhance the sealing effect. A second spring 15 is installed inside the mounting sleeve 13, providing continuous thrust. One end of the second spring 15 is fixedly connected inside the mounting sleeve 13, and the other end is fixedly connected to the side wall of the sealing gasket 16. The second spring 15 works in conjunction with the sealing gasket 16 to ensure that the sealing gasket 16 always tightly fits the O-ring 12. A first sealing lip 17 and a second sealing lip 18 are fixedly connected to the side wall of the sealing gasket 16. These two lipes contact the inner wall of the cast steel parts to form a first seal, achieving initial leak prevention. The side walls of the first and second sealing lips 17 and 18 are slidably connected inside the cast steel parts 1 and 2.

[0040] The sealing assembly consists of an O-ring 12, a heat insulation ring 14, a mounting sleeve 13, a sealing gasket 16, a second spring 15, a first sealing lip 17, and a second sealing lip 18. Through the synergistic effect of the double sealing defense and the spring preload, it achieves a sealing effect that effectively blocks media leakage and adapts to changes in operating conditions.

[0041] Working principle: When it is necessary to connect cast steel part 1 and cast steel part 2, the initial positioning is achieved first by multiple positioning blocks 11 on the side wall of cast steel part 1. The positioning blocks 11 slide into the corresponding grooves of cast steel part 2, restricting the relative circumferential rotation of the two parts and ensuring accurate docking. After positioning, retaining rings 3 and 4 are placed on the outside of the connection part of cast steel part 1 and cast steel part 2. The arc-shaped structure of the retaining rings wraps around the docking point of the two cast steel parts. Through the rotational connection characteristics of retaining rings 3 and 4, the two parts are closed. At this time, the retaining sleeve 5 on retaining ring 3 and the retaining sleeve 6 on retaining ring 4 are aligned. The retaining hook 8 inside retaining sleeve 6 pops out under the elastic force of spring 10 and automatically engages with the retaining hook 7 inside retaining sleeve 5, realizing the temporary pre-fixation of the two cast steel parts and avoiding misalignment during the connection process.

[0042] After pre-fixing, the fixing bolt 19 on the side wall of the first sleeve 5 passes through the corresponding hole of the second sleeve 6, and the self-locking nut 20 of the threaded connection is tightened. The axial force of the bolt is used to further tighten the first circlip 3 and the second circlip 4, ensuring that the first cast steel part 1 and the second cast steel part 2 fit tightly together. The self-locking nut 20 can prevent loosening caused by vibration and improve the reliability of the connection. If it is necessary to separate the two cast steel parts, press the pressing plate 9 inside the second sleeve 6 to drive the second hook 8 to compress the first spring 10, so that the second hook 8 and the first hook 7 are disengaged. Then loosen the fixing bolt 19 and the self-locking nut 20 to open the circlip and complete the disassembly.

[0043] When the two cast steel parts are joined, the mounting sleeves 13 inside are fixed on the heat insulation rings 14. The heat insulation rings 14 can block the transfer of external heat and protect the sealing components. The spring 15 inside the mounting sleeve 13 pushes the sealing gasket 16 to squeeze the O-ring 12 in the middle, so that the side wall of the sealing gasket 16 fits tightly with the O-ring 12. The sealing lips 17 and 18 on the sealing gasket 16 slide in contact with the inner walls of the cast steel parts 1 and 2 respectively, forming the first sealing line. At the same time, the compression of the O-ring 12 by the two sealing gaskets 16 causes the O-ring 12 to undergo elastic deformation, filling the sealing gap and forming the second sealing line. This double protection prevents media leakage.

Claims

1. A cast steel component that is easy to connect, comprising a cast steel component (1), characterized in that: The side wall of the first cast steel part (1) is provided with a second cast steel part (2), the side wall of the first cast steel part (1) is provided with a fixing component, and the inside of the first cast steel part (1) and the second cast steel part (2) is provided with a sealing component; The fixing assembly includes a first retaining ring (3) and a second retaining ring (4). The side wall of the second retaining ring (4) is rotatably connected to the side wall of the first retaining ring (3). The side walls of the first cast steel part (1) and the second cast steel part (2) are slidably connected inside the first retaining ring (3) and the second retaining ring (4). The side wall of the first retaining ring (3) is fixedly connected to a first retaining sleeve (5). The inside of the first retaining sleeve (5) is fixedly connected to a first hook (7). The side wall of the second retaining ring (4) is fixedly connected to a second retaining sleeve (6). The inside of the second retaining sleeve (6) is slidably connected to a second hook (8). The inside of the second retaining sleeve (6) is provided with a first spring (10). One end of the first spring (10) is fixedly connected inside the second retaining sleeve (6), and the other end of the first spring (10) is fixedly connected to the side wall of the second hook (8). The side wall of the second hook (8) is fixedly connected to a pressing plate (9).

2. The cast steel part for easy connection according to claim 1, characterized in that: The sealing assembly includes an O-ring (12), the sidewall of which is slidably connected inside the first cast steel part (1) and the second cast steel part (2).

3. The cast steel part for easy connection according to claim 1, characterized in that: The side wall of the pressing plate (9) is slidably connected inside the second sleeve (6), and the first hook (7) engages with the second hook (8).

4. A cast steel part that is easy to connect according to claim 1, characterized in that: The side wall of the first ferrule (5) is threaded with a fixing bolt (19), the side wall of the fixing bolt (19) is slidably connected to the inside of the second ferrule (6), the side wall of the fixing bolt (19) is threaded with a self-locking nut (20), the side wall of the first cast steel part (1) is fixedly connected with multiple positioning blocks (11), the side wall of the positioning blocks (11) is slidably connected to the inside of the second cast steel part (2).

5. A cast steel component for easy connection according to claim 2, characterized in that: Both the first cast steel part (1) and the second cast steel part (2) are fixedly connected to a heat insulation ring (14), and the side wall of the heat insulation ring (14) is fixedly connected to an installation sleeve (13).

6. A cast steel component for easy connection according to claim 5, characterized in that: The mounting sleeve (13) has a sliding connection to a sealing gasket (16), and the sidewall of the sealing gasket (16) is attached to the sidewall of the O-ring (12).

7. A cast steel component for easy connection according to claim 6, characterized in that: The mounting sleeve (13) is provided with a second spring (15), one end of the second spring (15) is fixedly connected to the inside of the mounting sleeve (13), and the other end of the second spring (15) is fixedly connected to the side wall of the sealing gasket (16).

8. A cast steel part that is easy to connect according to claim 6, characterized in that: The sealing gasket (16) is fixedly connected to a sealing lip one (17) on its side wall, and the sealing gasket (16) is fixedly connected to a sealing lip two (18) on its side wall. The sealing lip one (17) and the sealing lip two (18) are slidably connected inside the cast steel part one (1) and the cast steel part two (2).

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