Machining protection device for air spring hole of railway vehicle framework
By designing a protective device with snap-fit plates and multiple layers of materials, the problem of inconvenient shrinkage of snap-fit plates in the machining of air spring holes in rail vehicle frames was solved, achieving a stable connection and efficient protection, and improving machining efficiency and durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-04-03
AI Technical Summary
The existing protective device for processing air spring holes in rail vehicle frames lacks a snap-fit plate that can be easily retracted, resulting in inconvenience in component compatibility and storage.
Design a protective device comprising a rectangular plate, a snap-fit plate, a connecting spring, and a fixing bolt. A stable connection is achieved by the snap-fit plate moving within a sliding groove. Rubber plugs and multi-layered material plates are added to improve sealing and durability.
It achieves a stable connection and easy disassembly of components, improves processing efficiency, reduces storage space requirements, and enhances protection and durability.
Smart Images

Figure CN224073927U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of protection technology, specifically a processing protection device for air spring holes in rail vehicle frames. Background Technology
[0002] The machining protection device for air spring holes in rail vehicle frames significantly improves machining efficiency and quality. Firstly, the device effectively prevents chips, coolant, and impurities from entering the air spring holes through sealing components, ensuring cleanliness and reducing secondary cleaning work. Secondly, the robust fixing mechanism maintains the device's position in high-vibration environments, preventing displacement or loosening during machining. Furthermore, the mounting plate is available in various materials to suit specific needs, balancing lightweight design, high strength, corrosion resistance, and cost control.
[0003] The ease of operation of the protective device is also one of its advantages, with rapid installation and disassembly significantly improving production efficiency. Finally, the device's high durability and low maintenance requirements reduce long-term operating costs. It excels in cleanliness, stability, compatibility, and economy, making it an indispensable auxiliary tool in the fabrication of rail vehicle frames.
[0004] However, in common applications of structural components, there is no easy-to-retract snap-fit plate, which is not conducive to the storage and use of the components and reduces their adaptability. Utility Model Content
[0005] The purpose of this application is to provide a processing protection device for the air spring holes of a rail vehicle frame in order to solve the problem of the aforementioned problem of setting a snap-fit plate that is easy to retract.
[0006] The technical solution adopted in this application is as follows: A processing and protective device for air spring holes in a rail vehicle frame includes a rectangular plate. Multiple sliding grooves are provided on the side of the rectangular plate. A snap-fit plate is slidably connected inside the sliding groove. Multiple connecting springs are fixedly connected to the sliding groove inside the rectangular plate. The other end of the connecting spring is fixedly connected to the snap-fit plate. Multiple threaded holes are provided on the side of the snap-fit plate. Multiple fixing bolts are threadedly connected to the side of the rectangular plate. The other end of the fixing bolt passes through the rectangular plate and is inserted into the threaded hole on the side of the snap-fit plate.
[0007] By adopting the above technical solution, during the use of the components, workers can easily fix the position of the rectangular plate by using the snap-fit plate, and then conveniently insert the plug into the air spring hole of the rail vehicle frame, thus facilitating the protection of the air spring hole and preventing external contaminants from entering. During use, workers can remove the fixing bolts, and then move the snap-fit plate in the sliding groove by the connecting spring, thus facilitating the removal of the fixing bolts from the rectangular plate. The fixing bolts are then reinserted into the rectangular plate, and then connected to the threaded hole at the corresponding position on the side of the snap-fit plate, thus ensuring the stable position of the snap-fit plate. This facilitates subsequent use of the snap-fit plate to fix the working position of the rectangular plate and ensures a stable connection between the components.
[0008] In a preferred embodiment, the snap-fit plate has a fixing through hole inside.
[0009] By adopting the above technical solution, the fixing through hole allows workers to pass the fixing bolt through the fixing through hole and then connect the area around the air spring hole, thereby facilitating the use of fixing the rectangular plate in the working position.
[0010] In a preferred embodiment, a handle is fixedly connected to the upper end of the rectangular plate.
[0011] By adopting the above technical solution, the handle plate allows workers to easily hold and pull the rectangular plate to remove the component for subsequent operation.
[0012] In a preferred embodiment, a plug is fixedly connected to the lower end of the rectangular plate, and the plug is made of rubber.
[0013] By adopting the above technical solution, the plug can be easily inserted into the spring hole, thereby ensuring the internal sealing of the spring hole and enabling protective operation. The use of rubber material reduces friction damage during installation and protects the spring hole.
[0014] In a preferred embodiment, the rectangular plate is composed of multiple layers of materials, and an aluminum alloy layer is disposed inside the rectangular plate.
[0015] By adopting the above technical solution, the aluminum alloy layer is lightweight and high-strength, which can effectively reduce the weight of the mounting plate. At the same time, it has good corrosion resistance and is suitable for use in harsh environments. In addition, the aluminum alloy layer is easy to process and form, which can meet complex design requirements.
[0016] In a preferred embodiment, a carbon fiber layer is disposed inside the rectangular plate at the lower end of the aluminum alloy layer.
[0017] By adopting the above technical solution, the carbon fiber layer has extremely high strength and rigidity, while being very lightweight, which can significantly reduce the overall weight and improve energy efficiency. Its excellent fatigue performance enables it to maintain stability during long-term use and provides better protection.
[0018] In a preferred embodiment, a stainless steel layer is disposed inside the rectangular plate at the lower end of the carbon fiber layer.
[0019] By adopting the above technical solution, the stainless steel layer has excellent corrosion resistance and strength, can withstand high temperature and high pressure, is suitable for harsh working environments, is easy to clean, has low maintenance costs, and extends service life.
[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:
[0021] In this application, during the use of the components, the operator uses a snap-fit plate to easily fix the position of the rectangular plate, which is then conveniently inserted into the spring hole of the rail vehicle frame using a plug-in plug. This facilitates the protection of the spring hole, preventing external contaminants from entering. During use, the operator removes the fixing bolts, and then moves the snap-fit plate within the sliding groove via the connecting spring, making it easy to remove the fixing bolts from the rectangular plate. The fixing bolts are then reinserted into the rectangular plate and connected to the threaded holes on the corresponding positions on the side of the snap-fit plate, ensuring the snap-fit plate is firmly positioned. This facilitates subsequent use of the snap-fit plate to fix the rectangular plate in its working position, ensuring a stable connection between the components. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the machining protection device for the air spring hole of the rail vehicle frame in this application;
[0023] Figure 2 This is a schematic diagram showing the unfolded structure of the processing protection device in this application;
[0024] Figure 3 This is a schematic diagram of the card connector assembly structure in this application;
[0025] Figure 4 This is a schematic diagram of the material composition of the protective device in this application.
[0026] The markings in the diagram are: 1. Rectangular plate; 2. Handle plate; 3. Fixing bolt; 4. Snap-fit plate; 5. Insert plug; 6. Threaded hole; 7. Connecting spring; 8. Stainless steel layer; 9. Fixing through hole; 10. Carbon fiber layer; 11. Aluminum alloy layer. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0028] Example:
[0029] Reference Figure 1-3 A protective device for processing air spring holes in a rail vehicle frame includes a rectangular plate 1. Multiple sliding grooves are formed on the side of the rectangular plate 1, and a snap-fit plate 4 is slidably connected inside each groove. Multiple connecting springs 7 are fixedly connected to the sliding grooves inside the rectangular plate 1, and the other end of each connecting spring 7 is fixedly connected to the snap-fit plate 4. Multiple threaded holes 6 are formed on the side of the snap-fit plate 4, and multiple fixing bolts 3 are threadedly connected to the side of the rectangular plate 1. The other end of each fixing bolt 3 passes through the rectangular plate 1 and is inserted into the threaded hole 6 on the side of the snap-fit plate 4. During use, the operator can easily fix the position of the rectangular plate 1 using the snap-fit plate 4, thus facilitating passage. The plug 5 is inserted into the spring hole of the rail vehicle frame to facilitate the protection of the spring hole and prevent external contaminants from entering. During use, the operator removes the fixing bolt 3 and then moves the snap-fit plate 4 in the sliding groove through the connecting spring 7, making it easy to remove the fixing bolt 3 from the rectangular plate 1. The fixing bolt 3 is then reinserted into the rectangular plate 1 and connected to the threaded hole 6 on the corresponding position on the side of the snap-fit plate 4 to ensure the position of the snap-fit plate 4 is stable. This facilitates the subsequent use of the snap-fit plate 4 to fix the working position of the rectangular plate 1 and ensures a stable connection between components.
[0030] Reference Figure 1-3 The snap-fit plate 4 has a fixing through hole 9 inside. The fixing through hole 9 allows the operator to pass the fixing bolt through the fixing through hole 9 and then connect the area around the air spring hole, thereby facilitating the fixing of the rectangular plate 1 in the working position.
[0031] Reference Figure 1-3 A handle plate 2 is fixedly connected to the upper end of the rectangular plate 1. The handle plate 2 allows the staff to hold and pull the rectangular plate 1 to easily remove the component for subsequent operation.
[0032] Reference Figure 1-3 The lower end of the rectangular plate 1 is fixedly connected with a plug 5. The plug 5 is made of rubber. The plug 5 can be easily inserted into the spring hole, thereby ensuring the sealing of the inside of the spring hole and thus performing protective operations. The use of rubber material reduces friction damage during installation and protects the spring hole.
[0033] Reference Figure 1-4 The rectangular plate 1 is composed of multiple layers of materials. An aluminum alloy layer 11 is provided inside the rectangular plate 1. The aluminum alloy layer 11 is lightweight and high-strength, which can effectively reduce the weight of the mounting plate. It also has good corrosion resistance, making it suitable for use in harsh environments. At the same time, the aluminum alloy layer 11 is easy to process and form, which can meet complex design requirements.
[0034] Reference Figure 1-4 The interior of the rectangular plate 1 is provided with a carbon fiber layer 10 at the lower end of the aluminum alloy layer 11. The carbon fiber layer 10 has extremely high strength and rigidity, and is very lightweight, which can significantly reduce the overall weight and improve energy efficiency. Its excellent fatigue performance enables it to maintain stability during long-term use and provides better protection.
[0035] Reference Figure 1-4 Inside the rectangular plate 1, at the lower end of the carbon fiber layer 10, there is a stainless steel layer 8. The stainless steel layer 8 has excellent corrosion resistance and strength, can withstand high temperature and high pressure, is suitable for harsh working environments, is easy to clean, has low maintenance costs, and extends service life.
[0036] The implementation principle of the embodiment of the machining protection device for air spring holes in a rail vehicle frame of this application is as follows:
[0037] In the use of the components, the operator uses the snap-fit plate 4 to easily fix the position of the rectangular plate 1, which is then conveniently inserted into the air spring hole of the rail vehicle frame using the plug plug 5. This facilitates the protection of the air spring hole, preventing external contaminants from entering. During use, the operator removes the fixing bolt 3, and then moves the snap-fit plate 4 in the sliding groove via the connecting spring 7, making it easy to remove the fixing bolt 3 from the rectangular plate 1. The fixing bolt 3 is then reinserted into the rectangular plate 1, and then connected to the threaded hole 6 on the corresponding position on the side of the snap-fit plate 4, ensuring the position of the snap-fit plate 4 is stable. This facilitates subsequent use of the snap-fit plate 4 to fix the working position of the rectangular plate 1, ensuring a stable connection between components. This structure allows the snap-fit plate 4 to be removed when needed and moved back into the rectangular plate 1 when not in use, thus reducing the space occupied by the rectangular plate 1 and facilitating storage and operation.
[0038] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A protective device for processing air spring holes in a rail vehicle frame, comprising a rectangular plate (1), characterized in that: The rectangular plate (1) has multiple sliding grooves on its side. A snap-fit plate (4) is slidably connected inside the sliding groove. Multiple connecting springs (7) are fixedly connected inside the sliding groove of the rectangular plate (1). The other end of the connecting spring (7) is fixedly connected to the snap-fit plate (4). Multiple threaded holes (6) are opened on the side of the snap-fit plate (4). Multiple fixing bolts (3) are threadedly connected to the side of the rectangular plate (1). The other end of the fixing bolt (3) passes through the rectangular plate (1) and is inserted into the threaded hole (6) opened on the side of the snap-fit plate (4).
2. The machining protection device for the air spring hole of a rail vehicle frame as described in claim 1, characterized in that: The snap-fit plate (4) has a fixing through hole (9) inside.
3. The processing protection device for the air spring hole of a rail vehicle frame as described in claim 1, characterized in that: A handle plate (2) is fixedly connected to the upper end of the rectangular plate (1).
4. The machining protection device for the air spring hole of a rail vehicle frame as described in claim 1, characterized in that: The lower end of the rectangular plate (1) is fixedly connected to a plug (5), which is made of rubber.
5. The machining protection device for the air spring hole of a rail vehicle frame as described in claim 1, characterized in that: The rectangular plate (1) is composed of multiple layers of materials, and an aluminum alloy layer (11) is provided inside the rectangular plate (1).
6. The machining protection device for the air spring hole of a rail vehicle frame as described in claim 5, characterized in that: The rectangular plate (1) has a carbon fiber layer (10) located at the lower end of the aluminum alloy layer (11) inside.
7. The machining protection device for the air spring hole of a rail vehicle frame as described in claim 1, characterized in that: The rectangular plate (1) has a stainless steel layer (8) located at the lower end of the carbon fiber layer (10) inside.