Adaptive joint and air cylinder

Abstract

The utility model relates to an adaptive joint and an air cylinder, the adaptive joint comprises a fastener and a rotating nut, a first section of the rotating nut sleeves the outer side of a first part of the fastener through an annular rotating part, an internal thread is arranged in a second section of the rotating nut, and an accommodating cavity is formed between the second section of the rotating nut and a second part of the fastener; the element is arranged in the accommodating cavity; the internal thread of the rotating nut is matched with the external thread of the element to fix the element; and the other connecting section of the adaptive joint is connected with the air cylinder through the external threads. The air cylinder and the drainage ball valve are connected in a threaded mode, disassembly and maintenance of the drainage ball valve are facilitated, sealing is achieved through the sealing ring, and the sealing effect between the air cylinder and the drainage ball valve is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air cylinders, and in particular to an adapter joint and an air cylinder. Background Art

[0002] In rail vehicle air brake systems, air cylinders are commonly used energy storage components. To prevent condensed water from accumulating within the cylinder, a drain ball valve is often installed below the air cylinder. The existing connection method involves first installing a sealing ring and transition joint, then applying fastener glue to the external threads below the transition joint, and finally installing the drain ball valve. After adjusting the ball valve's orientation, it is secured and sealed with threaded fastener glue. This bonding operation requires high standards, with detailed regulations for both the glue application process and glue storage. Furthermore, due to differences in worker skill, the fastening and sealing effects are often inconsistent. Furthermore, using glue to seal the air cylinder and drain ball valve is inconvenient to disassemble and repair, and the quality of the glue applied during disassembly and reinstallation of the ball valve is difficult to guarantee, causing the drain ball valve to loosen and fall off, potentially leaking air at best and impacting driving safety in severe cases. Utility Model Content

[0003] To address the technical issues that the air cylinder and ball valve are currently fixed with glue, resulting in poor sealing and difficulty in disassembly and maintenance, this application provides an adapter joint, including:

[0004] A fastener, the fastener comprising at least one connecting section, the connecting section comprising a first portion and a second portion connected thereto;

[0005] A hollow rotating nut comprising a first section and a second section connected to each other, wherein the first section is sleeved on the outside of the first section, and a receiving cavity is formed between the second section and the second section;

[0006] The annular rotating member is sandwiched between the first section and the first part, and the rotating nut rotates in situ relative to the first part through the annular rotating member.

[0007] Furthermore, the annular rotating member is a rotating ring.

[0008] Furthermore, the inner surface of the second section has a first internal thread. When the connecting section is connected to an element with an external thread, the element is placed in the accommodating cavity, the rotating nut rotates in place through the annular rotating member, and the first internal thread cooperates with the external thread to fix the element.

[0009] Furthermore, the fastener includes a first connecting section and a second connecting section connected to each other, the outer surface of the first connecting section is provided with a first external thread, and the second connecting section is connected to the rotating nut.

[0010] Furthermore, a step is provided between the first connecting section and the second connecting section, and a first sealing ring is provided on a surface of the step close to and facing the first connecting section.

[0011] Furthermore, a force-bearing section is provided between the platform stage and the second connecting section, and the force-bearing section is polygonal along a cross section perpendicular to the central axis of the fastener.

[0012] Furthermore, the end portion of the second portion is configured to have a radius that gradually decreases in a direction away from the first portion.

[0013] Furthermore, a second sealing ring is provided on the outer surface of the end portion of the second portion.

[0014] Furthermore, the first external thread is configured as a G3 / 4 thread.

[0015] Furthermore, a through hole is provided at the axis of the fastener.

[0016] The present application further provides an air cylinder, which includes the above-mentioned adapter joint, and the adapter joint connects the air cylinder and the pipe joint of the drainage ball valve.

[0017] Furthermore, the first connecting section of the adapter joint is connected to the air cylinder, the pipe joint is accommodated in the accommodating cavity, and the first internal thread of the rotating nut cooperates with the external thread of the pipe joint to fix the pipe joint.

[0018] Furthermore, one end of the pipe joint away from the adapter joint is connected to a drainage ball valve.

[0019] The present application relates to an adapter joint and an air cylinder. The adapter joint includes a fastener and a rotating nut. The first section of the rotating nut is sleeved on the outside of the first section of the fastener via an annular rotating member. The second section of the rotating nut is provided with an internal thread, and a receiving chamber is formed between the rotating nut and the second section of the fastener. When connecting a component with an external thread, the component is placed in the receiving chamber, and the internal thread of the rotating nut cooperates with the external thread of the component to fix the component. The other connecting section of the adapter joint is connected to the air cylinder via an external thread. The present application connects the air cylinder and the drain ball valve via a threaded connection, facilitating disassembly and maintenance of the drain ball valve. The sealing is achieved by a sealing ring, thereby improving the sealing effect between the air cylinder and the drain ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the adapter for this application;

[0021] Figure 2 A cross-sectional view of the adapter for this application;

[0022] Figure 3 This is a schematic diagram of the connection between the air cylinder and the adapter;

[0023] Figure 4 An enlarged cross-sectional view of the connection between the air cylinder and the adapter.

[0024] Description of Reference Numerals

[0025] 1. Fastener; 10. Air cylinder; 11. First connecting section; 111. First external thread; 12. Second connecting section; 121. Second sealing ring; 13. Platform stage; 131. First sealing ring; 14. Force-bearing section; 2. Rotating nut; 21. First internal thread; 3. Annular rotating part; 4. Through hole; 5. Central axis; 100. Adapter joint; 200. Pipe joint; 300. Drain ball valve. DETAILED DESCRIPTION

[0026] In order to provide a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the following detailed description of the implementation of the embodiments of the present disclosure is provided in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not intended to limit the embodiments of the present disclosure. In other cases, to simplify the drawings, well-known structures and devices may be simplified.

[0027] The terms "first", "second", etc. in the description and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0028] In the embodiments disclosed herein, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can mean a direct connection, an indirect connection through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments disclosed herein based on the specific circumstances.

[0029] In order to further understand the purpose, structure, features, and functions of this application, the following examples and appendix are provided. Figure 1-4 Detailed instructions are as follows.

[0030] In order to solve the technical problem that the air cylinder and the drain ball valve are fixed with glue, which leads to poor sealing effect and is not easy to disassemble and repair, the present application provides an adapter joint 100, see Figure 1 and Figure 2The adapter joint 100 includes a fastener 1, a rotating nut 2 and an annular rotating member 3, wherein the fastener 1 includes at least one connecting section, and the connecting section includes a first part and a second part connected to each other; the rotating nut 2 is hollow, and the rotating nut 2 includes a first section and a second section connected to each other, the first section is sleeved and connected to the outside of the first part, and an accommodating cavity is formed between the second section and the second part, and the accommodating cavity is an annular cavity; the annular rotating member 3 is clamped between the first section and the first part, and the rotating nut 2 rotates in place relative to the first part through the annular rotating member 3. The setting of the annular rotating member 3 makes it possible for the connecting section of the fastener 1 to be fixed when the rotating nut 2 rotates in place relative to the first part of the connecting section, thereby improving the flexibility and convenience of the connection between the components.

[0031] The fastener 1 may include multiple connecting sections to adapt to different installation scenarios, wherein at least one connecting section includes a first portion and a second portion.

[0032] In one embodiment, the first portion of the connecting section is in a cylindrical structure, and an annular rotating member 3 is sleeved on the outer surface of the connecting section so as to be rotatably connected to the rotating nut 2 via the annular rotating member 3 .

[0033] The rotating nut 2 rotates in situ relative to the first portion via the annular rotating member 3 , that is, when the rotating nut 2 rotates, the rotating nut 2 does not move relative to the connecting section of the fastener 1 in the direction along the central axis 5 of the fastener 1 .

[0034] Preferably, the annular rotating member 3 can be a bearing or a rotating ring. In one embodiment of the present application, the annular rotating member 3 is a rotating ring, which is a circular ring structure, so that the rotating nut 2 can rotate in situ relative to the first part of the fastener 1. Specifically, a rotating ring is provided on the outside of the first part of the connecting section, and the inner diameter of the rotating ring matches the outer diameter of the first part of the fastener 1, ensuring that the rotating ring can be tightly sleeved on the outside of the fastener 1 without falling off. The first part of the fastener 1 is rotatably connected to the first section of the rotating nut 2 through the rotating ring. The outer diameter of the rotating ring matches the inner diameter of the first section of the rotating nut 2, so that the first section of the rotating nut 2 can be sleeved on the rotating ring and realize relative rotation with the first part of the fastener 1 through the rotating ring, that is, rotation in situ.

[0035] The material of the annular rotating member 3 is preferably a wear-resistant, low-friction material, such as polytetrafluoroethylene, nylon, metal, or other materials that meet the wear-resistant, low-friction material requirements to ensure that the rotating nut 2 rotates smoothly and does not easily wear. In this application, the annular rotating member is made of metal.

[0036] Preferably, an annular groove centered about the central axis 5 of the fastener 1 is provided on the outer side of the first portion of the fastener 1 and on the inner side of the first section of the rotating nut 2 to accommodate the annular rotating member 3. The annular groove provides a stable and reliable rotational interface, reducing friction and wear between the rotating nut 2 and the fastener 1.

[0037] In an optional embodiment, the inner surface of the second section of the rotating nut 2 has a first internal thread 21 so as to be able to cooperate with an element with an external thread. When the connecting section is connected to the element with an external thread, the element is placed in the accommodating cavity formed between the rotating nut 2 and the fastener 1, and the rotating nut 2 is rotated in place by the annular rotating member 3 to fix or release the element. As the rotating nut 2 rotates, the first internal thread 21 on the inner surface of the second section thereof will gradually cooperate with the external thread of the element, thereby tightly fixing the element in the accommodating cavity; when it is necessary to disassemble the adapter 100 or replace the element with an external thread, the rotating nut 2 is rotated in the opposite direction so that the first internal thread 21 cooperates with the external thread of the element until it separates, and then the element can be easily removed from the accommodating cavity. The cooperation between the rotating nut 2 and the annular rotating member 3 allows the connection structure between the adapter 100 and the element with an external thread to be easily disassembled and reinstalled without destroying any components, which facilitates subsequent maintenance and repair work.

[0038] In one embodiment, the component with external threads is a pipe connector 200 , which is a standard component connected to the adapter connector 100 and the drainage ball valve 300 in the air cylinder drainage system.

[0039] The fastener 1 includes a first connecting section 11 and a second connecting section 12 connected to each other. The outer surface of the first connecting section 11 is provided with a first external thread 111. The second connecting section 12 is connected to the rotating nut 2. The second connecting section 12 cooperates with the rotating nut 2 to fix the elements to be connected.

[0040] The outer surface of the first connecting section 11 is provided with a first external thread 111 to achieve cooperation and tightening with a component with an internal thread. In the embodiment of the present application, the component with an internal thread is the drain outlet of the air cylinder 10. The first external thread 111 on the first connecting section 11 of the fastener 1 is cooperated and tightened with the internal thread of the drain outlet of the air cylinder 10 to achieve the connection between the adapter joint 100 and the drain outlet of the air cylinder 10.

[0041] Preferably, a step 13 is provided between the first connecting section 11 and the second connecting section 12 , and a first sealing ring 131 is provided on the surface of the step 13 close to and facing the first connecting section 11 , thereby improving the sealing performance of the adapter joint 100 .

[0042] Along a direction perpendicular to the central axis 5 , the cross-sectional area of the terrace section 13 is larger than the cross-sectional area of the first connecting section 11 .

[0043] The stage 13 is used to install a first sealing ring 131. When the first connecting section 11 is connected to other components, the first sealing ring 131 seals a gap generated when the first connecting section 11 is connected to other components.

[0044] Here, the first sealing ring 131 is an SD sealing ring, which can be made of an elastic material that is oil-resistant, high-temperature-resistant, and corrosion-resistant.

[0045] Preferably, a force-bearing section 14 is provided between the step 13 and the second connecting section 12. The force-bearing section 14 has a polygonal shape along a cross-section perpendicular to the central axis 5 of the fastener 1. When a tightening force is applied, the polygonal shape enables the force-bearing section 14 to better resist rotation and slippage. The vertices of the polygon provide more locking points, making the fastener 1 less susceptible to relative rotation and slippage when subjected to external forces, thereby improving the stability and reliability of the connection.

[0046] In an optional embodiment, along a direction perpendicular to the central axis 5 , the cross-sectional area of the force-bearing segment 14 is larger than the cross-sectional area of the platform segment 13 .

[0047] The force-bearing section 14 and the connecting section of the adapter 100 are integrally formed. The polygonal design of the force-bearing section 14 enables the fastening force to be more effectively transmitted from the force-bearing section 14 to the entire fastener 1, thereby improving the fastening efficiency.

[0048] In one embodiment, the end of the second part of the rotating nut 2 is configured to gradually decrease in radius in a direction away from the first part, presenting a cone-like structure, so that the second part can pass more easily when inserted or fitted into other components, reducing friction and resistance during the installation process; at the same time, since the end radius gradually decreases, the conical structure can adapt to the aperture or shape of the component to be connected during the insertion process.

[0049] In order to better implement this application, a second sealing ring 121 is provided on the outer surface of the end of the second part to further improve the sealing and stability of the connection. The second sealing ring 121 is adjacent to the connection interface that needs to be sealed. In this application, the connection interface that needs to be sealed is the outer surface of the end of the second part and the inner surface of the component accommodated in the accommodating cavity.

[0050] In this application, the second sealing ring 121 is configured as an O-shaped annular sealing ring made of an elastic material with excellent deformation and adaptability, allowing it to closely conform to even minor irregularities in the connection interface, ensuring a good seal. Furthermore, the second sealing ring absorbs minor vibrations at the connection interface to a certain extent, reducing the risk of seal failure caused by vibration and improving seal stability.

[0051] Furthermore, the first external thread 111 is configured as a G3 / 4 thread. The G3 / 4 thread is a standard pipe thread whose dimensions and specifications comply with relevant international or national thread standards. "G" represents the pipe thread, and "3 / 4" represents the nominal diameter or size of the thread, which here refers to 3 / 4 inches. Since the first external thread 111 of the first connecting section 11 is configured in accordance with standard specifications, it can be matched and connected with components with the same thread specifications, achieving interoperability between different devices and systems, greatly simplifying the installation and maintenance process.

[0052] In this application, the first external thread 111 of the first connecting section 11 cooperates with the internal thread of the drain port of the air cylinder 10. The drain port of the air cylinder 10 is a standard G3 / 4 thread, and there is no difference between the two, which ensures the tightness and reliability of the connection and effectively prevents drainage leakage between the first external thread 111 and the drain port.

[0053] When the adapter 100 is connected to the air cylinder 10 , drainage of the air cylinder 10 needs to be considered, and a through hole 4 is provided at the axis of the fastener 1 .

[0054] In an optional embodiment, the through hole 4 sequentially passes through the first connecting section 11, the platform section 13, the force-bearing section 14 and the second connecting section 12, so that during the drainage process of the air cylinder 10, water can flow smoothly through the through hole 4, avoiding the problem of poor drainage due to blockage.

[0055] In one embodiment, the diameter of the through hole 4 is set to 3 mm, which ensures smooth drainage of the air cylinder 10 while preventing excessive air leakage. It should be noted that this application does not impose any specific restrictions on the diameter of the through hole 4, and the diameter of the through hole 4 can be flexibly set according to actual needs such as the drainage volume, water pressure, and air leakage requirements of the air cylinder.

[0056] This application also provides a wind cylinder 10, see Figure 3 and Figure 4 The air cylinder 10 includes the above-mentioned adapter joint 100, which connects the air cylinder 10 with the pipe joint 200 of the drain ball valve 300. The adapter joint 100 serves as a bridge connecting the air cylinder 10 and the drain ball valve 300. The first connecting section of the adapter joint 100 is connected to the drain port of the air cylinder 10, and the second connecting section is connected to the pipe joint 200, forming a drainage path. Since the connection parts of the drain port of the air cylinder 10 and the pipe joint 200 are of standard shape and standard size, the size of the adapter joint 100 of the present application is set to match the size of the connection parts of the drain port of the air cylinder 10 and the pipe joint 200. The standardized design ensures the compatibility and interchangeability between different components, simplifies the installation and maintenance process, and at the same time improves the reliability and stability of the connection, reducing leakage and loosening problems caused by size mismatch.

[0057] Preferably, the first connecting section 11 of the adapter joint 100 is connected to the air cylinder 10, and the pipe joint 200 is accommodated in the accommodating cavity. The first internal thread 21 of the rotating nut 2 cooperates with the external thread of the pipe joint 200 to fix the pipe joint 200. The air cylinder 10 and the pipe joint 200 are connected by the adapter joint 100, which facilitates the disassembly and maintenance of each component. At the same time, after the adapter joint 100 and the pipe joint 200 are fixed, the pipe joint 200 withstands the axial tension in the direction of the central axis 5, and is sealed with the help of the second sealing ring of the second connecting section 12.

[0058] Specifically, the outer surface of the first connecting section 11 has a first external thread 111, which cooperates with the internal thread of the drain port of the air cylinder 10 to fix the adapter joint 100 to the air cylinder 10; the second connecting section 12 of the adapter joint 100 is connected to the pipe joint 200, one end of the pipe joint 200 is placed in the accommodating cavity, and the external thread set on its outer surface cooperates with the first internal thread 21 of the rotating nut 2. When the rotating nut 2 is rotated, the first internal thread 21 on the inner surface of the second section will gradually cooperate with the external thread of the component, thereby tightly fixing the component in the accommodating cavity; when it is necessary to disassemble the adapter joint 100 or replace the component with an external thread, rotate the rotating nut 2 in the opposite direction so that the first internal thread 21 and the external thread of the component are separated, and then the component can be easily removed from the accommodating cavity.

[0059] To secure pipe connector 200, rotate nut 2, utilizing the accommodating cavity between its first section and the first portion of fastener 1 to tightly press pipe connector 200 against the inner wall of the accommodating cavity. The annular rotating member 3 allows nut 2 to rotate in place without rotating fastener 1, effectively sealing and securing pipe connector 200 to fastener 1. This effectively prevents loosening of the other connecting sections of fastener 1 as nut 2 rotates. To remove pipe connector 200, rotate nut 2 in the opposite direction to easily remove it from the accommodating cavity.

[0060] The end of the pipe joint 200 away from the adapter joint 100 is connected to the drain ball valve 300. The 300 air cylinder 10 is connected to the adapter joint 100, the pipe joint 200 and the drain ball valve 300 in sequence through the air and drain ports. A through hole 4 is set at the axis of the 300 adapter joint 100, corresponding to the through hole 4 of the pipe joint 200 to the drain ball valve 300, so that the water in the air cylinder 10 flows through the adapter joint 100 and the pipe joint 200 to the drain ball valve 300, and then is discharged or controlled.

[0061] When the air cylinder 10 drains water, the water first enters the adapter joint 100 through the drain port of the air cylinder 10, and flows along the through hole 4 that passes through the axis of the adapter joint 100. Since the through hole 4 corresponds to the through hole of the pipe joint 200, the water continues to flow through the through hole of the pipe joint 200 and finally reaches the drain ball valve 300. At the drain ball valve 300, the water can be discharged to the external environment, or the drain switch and drainage flow rate can be adjusted through the control of the drain ball valve.

[0062] In order to achieve a better sealing effect, the present application provides a first sealing ring 131 on the platform stage 13 of the fastener 1 and a second sealing ring 121 on the outer surface of the end of the second part of the second connecting section 12 of the fastener 1, thereby ensuring a smooth connection and sealing performance between the air cylinder 10 and the drain ball valve 300, so that water can flow freely in the through hole 4 and be discharged or the flow rate can be controlled through the drain ball valve 300.

[0063] The present application relates to an adapter 100 and an air cylinder 10. The adapter 100 includes a fastener 1 and a rotating nut 2. The first section of the rotating nut 2 is sleeved on the outside of the first portion of the fastener 1 via an annular rotating member 3. The second section of the rotating nut 2 is provided with an internal thread, and a receiving chamber is formed between the rotating nut 2 and the second portion of the fastener 1. When connecting a component with an external thread, the component is placed in the receiving chamber, and the internal thread of the rotating nut 2 cooperates with the external thread of the component to fix the component. The other connecting section of the adapter 100 is connected to the air cylinder 10 via an external thread. The present application connects the air cylinder 10 and the drain ball valve 300 via a threaded connection, which facilitates the disassembly and maintenance of the drain ball valve 300. The sealing is achieved by a sealing ring, thereby improving the sealing effect between the air cylinder 10 and the drain ball valve 300.

[0064] In the description of this specification, the reference terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0065] The logic and / or steps represented in the flowchart or otherwise described herein may be considered, for example, as an ordered list of executable instructions for implementing logical functions, and may be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device).

[0066] This application has been described with reference to the aforementioned embodiments. However, these embodiments are merely exemplary embodiments of the present application. It should be noted that the disclosed embodiments do not limit the scope of this application. On the contrary, modifications and enhancements made without departing from the spirit and scope of this application are intended to be protected by this patent.

Claims

1. An adapter, characterized in that: include: A fastener, the fastener comprising at least one connecting section, the connecting section comprising a first portion and a second portion connected thereto; A hollow rotating nut comprising a first section and a second section connected to each other, wherein the first section is sleeved on the outside of the first section, and a receiving cavity is formed between the second section and the second section; The annular rotating member is sandwiched between the first section and the first part, and the rotating nut rotates in situ relative to the first part through the annular rotating member.

2. The adapter according to claim 1, wherein: The annular rotating member is a rotating ring.

3. The adapter according to claim 1, wherein: The inner surface of the second section has a first internal thread. When the connecting section is connected to an element with an external thread, the element is placed in the accommodating cavity, the rotating nut rotates in place through the annular rotating member, and the first internal thread cooperates with the external thread to fix the element.

4. The adapter according to claim 1, wherein: The fastener includes a first connecting section and a second connecting section connected to each other, the outer surface of the first connecting section is provided with a first external thread, and the second connecting section is connected to the rotating nut.

5. The adapter according to claim 4, characterized in that: A step is provided between the first connecting section and the second connecting section, and a first sealing ring is provided on a surface of the step close to and facing the first connecting section.

6. The adapter according to claim 5, characterized in that: A force-bearing section is provided between the platform stage and the second connecting section, and the force-bearing section is polygonal in cross-section along a plane perpendicular to the central axis of the fastener.

7. The adapter according to claim 1, wherein: The end portion of the second portion is configured to have a radius gradually decreasing in a direction away from the first portion.

8. The adapter according to claim 7, wherein: A second sealing ring is provided on the outer surface of the end portion of the second portion.

9. The adapter according to claim 4, wherein: The first external thread is configured as a G3 / 4 thread.

10. The adapter according to claim 1, wherein: A through hole is provided at the axis center of the fastener.

11. An air cylinder, characterized in that: The air cylinder includes the adapter joint described in any one of claims 1 to 10, and the adapter joint connects the air cylinder and the pipe joint of the drainage ball valve.

12. The air cylinder according to claim 11, characterized in that: The first connecting section of the adapter joint is connected to the air cylinder, the pipe joint is accommodated in the accommodating cavity, and the first internal thread of the rotating nut cooperates with the external thread of the pipe joint to fix the pipe joint.

13. The air cylinder according to claim 11, characterized in that: One end of the pipe joint away from the adapter joint is connected to a drainage ball valve.

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