Anti-loose metal clamping sleeve type sealing joint combination

Abstract

The utility model discloses an anti-loose metal clamping sleeve type sealing joint combination, and relates to the technical field of sealing joints. The anti-loose metal clamping sleeve type sealing joint combination comprises a joint body and a welding transition joint, the welding transition joint is connected to one end of the joint body, an annular groove is formed in the inner side wall of the end of the joint body, the diameter of the annular groove is matched with the outer diameter of the welding transition joint, the welding transition joint is inserted into the annular groove, and the welding transition joint is connected with the end of the joint body. A trumpet-shaped limiting groove expanding outwards is formed in a groove opening of the annular groove; the welding transition joint is sleeved with a locknut, the locknut is in sliding connection with the welding transition joint, a first threaded section in an external thread shape is arranged on the outer side of the joint body, the locknut is in threaded connection with the joint body, and a clamping sleeve is arranged between the inner wall of the locknut and the outer wall of the welding transition joint. The end, close to the connector body, of the clamping sleeve is provided with a conical cutting edge.

Description

Technical Field

[0001] This utility model relates to the field of sealing joint technology, specifically to an anti-loosening metal ferrule type sealing joint assembly. Background Technology

[0002] Currently, the joint seals used in vehicle braking systems are rubber seals, which are prone to leakage in extremely cold winter climates. When vehicles operate in high-temperature environments, rubber is prone to aging, plastic deformation, and other defects, reducing the service life of the rubber rings or causing leakage problems. Utility Model Content

[0003] Therefore, this utility model provides an anti-loosening metal ferrule type sealing joint assembly to solve the problems existing in the above-mentioned technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A non-loosening metal ferrule type sealing joint assembly includes a joint body and a welding transition joint. The welding transition joint is connected to one end of the joint body. An annular groove is formed on the inner sidewall of the end of the joint body. The diameter of the annular groove is adapted to the outer diameter of the welding transition joint, and the welding transition joint is inserted into the annular groove. An outwardly expanding horn-shaped limiting groove is formed at the opening of the annular groove.

[0006] The welding transition joint is fitted with an anti-loosening nut, which is slidably connected to the welding transition joint. The outer side of the joint body has a first threaded section with an external thread. The anti-loosening nut is threadedly connected to the joint body. A retainer is provided between the inner wall of the anti-loosening nut and the outer wall of the welding transition joint. The retainer has a tapered cutting edge at one end near the joint body.

[0007] Optionally, the width of the annular groove is adapted to the wall thickness of the welded transition joint.

[0008] Optionally, the lock nut is a single nut structure;

[0009] The anti-loosening nut includes an annular first connecting part, which is sleeved on the welding transition joint. The outer side of the first connecting part extends toward the joint body to form an annular second connecting part, and the inner diameter of the second connecting part is larger than the inner diameter of the welding transition joint. The inner diameter of the second connecting part is adapted to the outer diameter of the joint body. A second threaded section is provided on the inner sidewall of the second connecting part. The anti-loosening nut is threadedly connected to the first threaded section on the joint body through the second threaded section. When the joint body is rotated, the first connecting part slides on the welding transition joint and drives the ferrule to move toward the joint body.

[0010] Optionally, the lock nut is a double nut structure;

[0011] The anti-loosening nut includes a fastening nut and a locking nut. One end of the fastening nut protrudes outward along the axial direction to form a fixed section. The inner diameter of the fixed section is the same as the inner diameter of the fastening nut. The inner walls of the fastening nut and the fixed section are provided with a continuous third thread section that matches the first thread section. The outer diameter of the fixed section is provided with a fourth thread section. One end of the locking nut is recessed inward to form a locking section. The outer diameter of the locking section is the same as the outer diameter of the locking nut. The inner diameter of the locking section is smaller than the inner diameter of the locking nut and the same as the outer diameter of the fixed section. The inner wall of the locking section is provided with a fifth thread section that matches the third thread section. The inner wall of the locking nut is provided with a sixth thread section that matches the first thread section.

[0012] The fastening nut and the locking nut are threadedly connected by the fourth and fifth thread segments. The fastening nut is threadedly connected to the first thread segment on the connector body by the third thread segment, and the locking nut is threadedly connected to the first thread segment on the connector body by the sixth thread segment.

[0013] Optionally, the ferrule includes an annular sliding portion, which is fitted between the anti-loosening nut and the welded transition joint. The thickness of the sliding portion gradually decreases at one end near the joint body, forming a tapered cutting edge structure, and the tapered cutting edge structure is adapted to the shape of the limiting groove.

[0014] Optionally, the ferrule is connected between the connector body and the weld transition joint by an interference fit of the cutting edge.

[0015] Optionally, the outer side of the fastening nut and / or the outer side of the locking nut are provided with arrow markings indicating the direction of screwing in the nut.

[0016] Optionally, the sleeve is made of stainless steel.

[0017] Optionally, both the fastening nut and the locking nut are provided with alignment marks, and the positions corresponding to the two alignment marks are the locking positions of the nuts.

[0018] Optionally, the fastening nut and the locking nut are provided with mating marks for pairing.

[0019] This utility model has at least the following beneficial effects:

[0020] This invention features a joint body and a welding transition joint. The welding transition joint is inserted into an annular groove on the joint body and connected to the joint body by a locking nut on the welding transition joint. Rotating the locking nut causes it to slide on the welding transition joint, which in turn moves the ferrule inside the locking nut toward the joint body. The ferrule's tapered cutting edge undergoes plastic deformation and inserts into a limiting groove on the joint body, where it fits tightly to achieve a sealing effect.

[0021] By making the ferrule out of stainless steel, it is less affected by changes in ambient temperature, thus ensuring a good seal. It also has excellent resistance to high and low temperatures, which can improve the service life of the ferrule and reduce the number of maintenance cycles.

[0022] By setting the anti-loosening nut as a double-nut structure, the fastening nut and the locking nut are threaded together to form a second friction surface. Both the fastening nut and the locking nut are threaded to the connector body, forming a second friction surface. After the fastening nut and the locking nut are screwed in, under impact and vibration loads, the friction force of the first friction surface will decrease and disappear. However, at the same time, the first nut will be compressed, which will further increase the friction force of the second friction surface. The nut must overcome the first and second friction forces to loosen. Since the first friction force decreases while the second friction force increases, the anti-loosening effect can be improved.

[0023] By setting up welded transition joints, installation becomes simpler, costs are reduced, and it can be adapted to various types of pipelines. Attached Figure Description

[0024] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0025] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0026] Figure 1 This is a schematic diagram of the internal structure of Embodiment 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of Embodiment 2 of the present invention;

[0028] Figure 3 for Figure 1 Enlarged structural diagram of section A;

[0029] Figure 4 is a schematic diagram of the adapter structure of the ferrule and connector body according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Connector body; 2. Welded transition joint; 3. Annular groove; 4. Limiting groove; 5. Anti-loosening nut; 51. First connecting part; 52. Second connecting part; 53. Fastening nut; 54. Locking nut; 55. Fixed section; 56. Locking section; 6. Sleeve; 61. Sliding part; 62. Conical cutting edge. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0033] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," "fourth," etc. (if present), in the specification, claims, and accompanying drawings of this utility model are intended to distinguish the objects they refer to. For schemes with a sequential flow, this terminology need not be interpreted as describing a specific order or sequence; for schemes with device structures, this terminology does not distinguish between matters of importance or positional relationships.

[0034] Furthermore, the terms “comprising,” “having,” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may also include other steps or units that are not expressly listed but are inherent to these processes, methods, products, or devices, or steps or units added based on further optimizations of the inventive concept.

[0035] Example 1

[0036] like Figure 1 , Figure 3 and Figure 4 As shown, this utility model discloses a type 6 anti-loosening ferrule sealing joint, which includes a joint body 1 and a welding transition joint 2. The welding transition joint 2 is connected to one end of the joint body 1. An annular groove 3 is provided on the inner side wall of the end of the joint body 1. The diameter of the annular groove 3 is adapted to the outer diameter of the welding transition joint 2, and the welding transition joint 2 is inserted into the annular groove 3. An outwardly expanding trumpet-shaped limiting groove 4 is provided at the opening of the annular groove 3.

[0037] The welding transition joint 2 is fitted with an anti-loosening nut 5, which is slidably connected to the welding transition joint 2. The outer side of the joint body 1 is provided with a first threaded section in the shape of an external thread. The anti-loosening nut 5 is threadedly connected to the joint body 1. A retainer 6 is provided between the inner wall of the anti-loosening nut 5 and the outer wall of the welding transition joint 2. A tapered cutting edge 62 is provided at one end of the retainer 6 near the joint body 1.

[0038] The aforementioned connector body 1 can be a straight-through, tee, or other pipe structure. In this embodiment, it is a tee structure. One end of the welded transition connector 2 is connected to the connector body 1, and the other end is welded to a pipe.

[0039] The specific connection structure between the welding transition joint 2 and the joint body 1 is as follows: an annular groove 3 is opened on the inner wall of the joint body 1. The difference between the radius of the annular groove 3 on the joint body 1 and the inner diameter of the joint body 1 is the wall thickness of the welding transition joint 2. After the welding transition joint 2 is inserted into the joint body 1, it is placed in the annular groove 3 and the inner walls of the two are flush. Then, an outwardly flared horn structure (conical) is opened on one side of the annular groove 3 away from the end of the joint body 1, which serves as the limiting groove 4 of the ferrule 6.

[0040] To install the welding transition joint 2, first put the anti-loosening nut 5 on the welding transition joint 2. The anti-loosening nut 5 has a U-shaped structure and a second threaded section on its inner side wall, which is used to connect with the first threaded section on the outer side wall of the joint body 1. Rotating the anti-loosening nut 5 will allow the anti-loosening nut 5 to move along the welding transition joint 2 toward the joint body 1.

[0041] An annular gap is provided between the U-shaped anti-loosening nut 5 and the side wall of the welding transition joint 2. The ferrule 6 is placed in the gap. The movement of the anti-loosening nut 5 drives the ferrule 6 to move toward the joint body 1.

[0042] It should be noted that, during use, both the anti-loosening nut 5 and the ferrule 6 are pre-installed on the welding transition joint 2.

[0043] The specific structure of the anti-loosening nut 5 is as follows: The anti-loosening nut 5 includes an annular first connecting part 51, which is sleeved on the welding transition joint 2. The outer side of the first connecting part 51 extends toward the joint body 1 to form an annular second connecting part 52, and the inner diameter of the second connecting part 52 is larger than the inner diameter of the welding transition joint 2. The inner diameter of the second connecting part 52 is adapted to the outer diameter of the joint body 1. A second threaded section is provided on the inner side wall of the second connecting part 52. The anti-loosening nut 5 is threadedly connected to the first threaded section on the joint body 1 through the second threaded section. When the joint body 1 is rotated, the first connecting part 51 slides on the welding transition joint 2 and drives the ferrule 6 to move toward the joint body 1.

[0044] The ferrule 6 includes an annular sliding portion 61, which is fitted between the anti-loosening nut 5 and the welding transition joint 2. The thickness of the sliding portion 61 gradually decreases at the end near the joint body 1, forming a tapered cutting edge 62 structure, and the tapered cutting edge 62 structure is adapted to the shape of the limiting groove 4. The ferrule 6 is connected between the joint body 1 and the welding transition joint 2 by an interference fit of the cutting edge.

[0045] The ferrule 6 is divided into two parts. One part is an annular sliding part 61, which can move along the outside of the welding transition joint 2. The other part is a tapered cutting edge 62 formed by the sliding part 61 extending towards one side of the joint body 1. The thickness of the tapered cutting edge 62 gradually decreases, and the tapered cutting edge 62 can be plastically deformed and inserted into the limiting groove 4 on the joint body 1, and fits tightly with the limiting groove 4 to form a sealing structure.

[0046] The card holder 6 can be made of stainless steel, or other metal materials can be selected according to needs.

[0047] Example 2

[0048] like Figure 2 and Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that:

[0049] The lock nut 5 has a double nut structure;

[0050] The anti-loosening nut 5 includes a fastening nut 53 and a locking nut 54. One end of the fastening nut 53 protrudes outward along the axial direction to form a fixing section 55. The inner diameter of the fixing section 55 is the same as the inner diameter of the fastening nut 53. The inner walls of the fastening nut 53 and the fixing section 55 are provided with a continuous third thread section that matches the first thread section. The outer diameter of the fixing section 55 is provided with a fourth thread section. One end of the locking nut 54 is recessed inward to form a locking section 56. The outer diameter of the locking section 56 is the same as the outer diameter of the locking nut 54. The inner diameter of the locking section 56 is smaller than the inner diameter of the locking nut 54 and the same as the outer diameter of the fixing section 55. The inner wall of the locking section 56 is provided with a fifth thread section that matches the third thread section. The inner wall of the locking nut 54 is provided with a sixth thread section that matches the first thread section.

[0051] The fastening nut 53 and the locking nut 54 are threadedly connected by the fourth and fifth thread segments. The fastening nut 53 is threadedly connected to the first thread segment on the connector body 1 by the third thread segment, and the locking nut 54 is threadedly connected to the first thread segment on the connector body 1 by the sixth thread segment.

[0052] In this embodiment, the anti-loosening nut 5 is set as a double nut locking structure, and the fastening nut 53 and the locking nut 54 are threadedly connected, and the fastening nut 53 and the locking nut 54 are also threadedly connected to the connector body 1 at the same time.

[0053] Specifically, the fastening nut 53 consists of two parts: the main body of the fastening nut 53 (with an internal thread structure) and a fixing section 55 extending to one side (which can be integrally formed). Both the inner and outer sides of the fixing section 55 have threaded structures. The threaded structure on the inner wall of the fixing section 55 forms a continuous third threaded segment with the internal thread of the fastening nut 53. The external threaded structure on the outer side of the fixing section 55 forms a fourth threaded segment. Furthermore, the outer diameter of the fixing section 55 is smaller than the outer diameter of the fastening nut 53. It has a stepped structure; the locking nut 54 is also composed of two parts, one part is the main body of the locking nut 54 (internal thread structure), and the other part is the locking section 56 (integral molding) extending to one side of the main body of the locking nut 54. The locking section 56 also has an internal thread structure, and the inner diameter of the locking section 56 is larger than the inner diameter of the locking nut 54. The inner diameter of the locking section 56 is matched with the outer diameter of the fixing section 55. The thread structure of the inner wall of the locking section 56 is the fifth thread segment, and the thread structure of the locking nut 54 is the sixth thread segment.

[0054] The fastening nut 53 is connected to the first threaded section on the connector body 1 via the third threaded section, and the locking nut 54 is connected to the fourth threaded section of the fastening nut 53 via the fifth threaded section. At the same time, the locking nut 54 is connected to the first threaded section on the connector body 1 via the sixth threaded section.

[0055] The fastening nut 53 mentioned above has a through hole on its main body that is compatible with the welding transition joint 2, so that it can be fitted onto the welding transition joint 2. The inner diameter of the threaded section of the fastening nut 53 is slightly larger than the inner diameter of the welding transition joint 2, forming a gap between the two for installing the ferrule 6.

[0056] During installation, the fastening nut 53 and the locking nut 54 need to be rotated synchronously first to push the tapered cutting edge 62 at the front end of the ferrule 6 into the limiting groove 4 of the connector body 1, and then the locking nut 54 is rotated to lock it.

[0057] The locking principle between the fastening nut 53 and the locking nut 54 is as follows: Two friction surfaces are generated between the fastening nut 53, the locking nut 54, and the connector body 1. The first friction surface is between the anti-loosening nut assembly and the fastened component (connector body 1), and the second friction surface is between the fastening nut 53 and the locking nut 54. During installation, the preload on the first friction surface is 80% of that on the second friction surface. Under impact and vibration loads, the friction force on the first friction surface decreases and disappears, but simultaneously, the first nut is compressed, causing the friction force on the second friction surface to further increase. Loosening the nut requires overcoming both the first and second friction forces, as the first friction force decreases while the second friction force increases.

[0058] Furthermore, the outer side of the fastening nut 53 and / or the outer side of the locking nut 54 are provided with arrow markings indicating the direction of screwing in the nut. The arrow markings can be provided by means of painting, engraving, or other methods.

[0059] Arrow markings are provided on the outside of the locking nut 54 and / or fastening nut 53 to facilitate construction work.

[0060] Both the fastening nut 53 and the locking nut 54 are provided with alignment marks, and the positions corresponding to the two alignment marks are the locking positions of the nuts.

[0061] Alignment marks (not shown in the figure) are provided on fastening nut 53 and locking nut 54 to help construction workers determine whether the two nuts are aligned. The pairing marks can be graphic marks or symbols engraved on the two nuts.

[0062] The fastening nut 53 and the locking nut 54 are provided with matching marks for pairing.

[0063] Pairing marks are set on fastening nuts 53 and locking nuts 54 to facilitate pairing of fastening nuts 53 and locking nuts 54, ensuring that each fastening nut 53 corresponds to only one dedicated locking nut 54, and preventing them from being mixed up after disassembly.

[0064] The pairing identifier can be the same symbol or character mark set on each set of fastening nuts 53 and locking nuts 54, and two identical symbols form a group, which facilitates pairing.

[0065] The above specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0066] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

[0067] The present invention has been described in a relatively specific and detailed manner above through general description and specific embodiments. It should be noted that, without departing from the concept of the present invention, various modifications and improvements can be made to these specific embodiments, all of which fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A lockwire metal ferrule type seal joint assembly characterized by: The application relates to a joint body and a welding transition joint connected to one end of the joint body, an annular groove is formed in the inner wall of the end of the joint body, the diameter of the annular groove is matched with the outer diameter of the welding transition joint, the welding transition joint is inserted into the annular groove, and an outwardly expanded horn-shaped limiting groove is formed at the opening of the annular groove. A lock nut is sleeved on the welding transition joint, the lock nut is in sliding connection with the welding transition joint, an outer thread-shaped first thread section is formed on the outer side of the joint body, the lock nut is in threaded connection with the joint body, a clamping sleeve is arranged between the inner wall of the lock nut and the outer wall of the welding transition joint, and a tapered blade edge is arranged on one end of the clamping sleeve close to the joint body. The clamping sleeve is connected between the joint body and the welding transition joint through the blade edge interference fit. The lock nut is a double-nut structure. The lock nut comprises a fastening nut and a locking nut, one end of the fastening nut is outwardly protruded along the axial direction to form a fixed section, the inner diameter of the fixed section is the same as that of the fastening nut, the inner wall of the fastening nut and the fixed section is provided with a continuous third thread section matched with the first thread section, the outer diameter of the fixed section is provided with a fourth thread section, one end of the locking nut is inwardly recessed to form a locking section, the outer diameter of the locking section is the same as that of the locking nut, the inner diameter of the locking section is smaller than that of the locking nut and the same as that of the fixed section, the inner wall of the locking section is provided with a fifth thread section matched with the third thread section, and the inner wall of the locking nut is provided with a sixth thread section matched with the first thread section. The fastening nut and the locking nut are in threaded connection through the fourth thread section and the fifth thread section, the fastening nut is in threaded connection with the first thread section on the joint body through the third thread section, and the locking nut is in threaded connection with the first thread section on the joint body through the sixth thread section.

2. A lockwire type sealed joint assembly according to claim 1, wherein: The width of the annular groove is matched with the wall thickness of the welding transition joint.

3. A lockwire seal joint assembly as defined in claim 2 wherein: The clamping sleeve comprises an annular sliding part, the sliding part is sleeved between the lock nut and the welding transition joint, the thickness of one end of the sliding part close to the joint body gradually decreases to form a tapered blade edge structure, and the tapered blade edge structure is matched with the shape of the limiting groove.

4. A lockwire seal assembly as defined in claim 1 wherein: The outer side of the fastening nut and / or the outer side of the locking nut is provided with an arrow mark representing the screwing direction of the nut.

5. A lockwire seal assembly as defined in claim 3 wherein: The clamping sleeve is made of stainless steel.

6. A lockwire seal assembly as defined in claim 4 wherein: The fastening nut and the locking nut are provided with alignment marks, and the corresponding positions of the two alignment marks are the locking positions of the nuts.

7. A lockwire seal assembly as defined in claim 6 wherein: The fastening nut and the locking nut are provided with matching marks for matching.

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