Tool for replacing independent spring of pantograph spring box

Abstract

The application discloses a tool for replacing independent springs of a pantograph spring box, which comprises a bow-shaped body and an adjusting part; the adjusting part comprises a pushing screw rod, a force-bearing guard plate and a bow head; the bow head is arranged at one end of the bow-shaped body and is used for being hung on a transverse screw rod of the spring box; the pushing screw rod is rotationally arranged at the other end of the bow-shaped body, and the force-bearing guard plate is rotationally connected with the pushing screw rod; and the force-bearing guard plate is used for being in contact with a mounting seat of the spring box. The application can solve the problems of waste of manpower and material resources, inconvenience in operation, low efficiency and high safety risk in replacing the independent tension springs of the pantograph spring box.

Description

Technical Field

[0001] This application belongs to the technical field of railway vehicle maintenance equipment, and specifically relates to a tooling for replacing the independent spring of the pantograph spring box. Background Technology

[0002] In the field of high-speed train operation and maintenance, the pantograph of the CRH2 high-speed train plays a crucial role. Its main function is to transmit electrical energy from the overhead contact line to the train's electrical components, making it an indispensable part of train operation. The independent tension spring in the pantograph head assembly spring box is of great significance in ensuring that the pantograph can withstand longitudinal impacts and maintain its alignment with the contact line. However, in routine high-speed train maintenance, the problem of broken independent tension springs in the pantograph spring box occurs frequently, and the existing replacement methods have many drawbacks.

[0003] Currently, there are two main methods for replacing the independent tension springs in the pantograph spring box of CRH2 EMU trains. One method is to replace the entire spring box assembly. While this method can solve the spring breakage problem, the disassembly and assembly of the spring box assembly is extremely complex. The disassembly and assembly process requires delicate handling of multiple components, which not only consumes a lot of time but also results in significant material waste. Since the price of a single independent tension spring is far lower than the price of the entire spring box assembly, replacing the entire assembly undoubtedly increases unnecessary costs.

[0004] Secondly, replacement requires three people working together, using screwdrivers to neutralize the individual tension spring's force, allowing it to naturally relax before replacing the individual spring. This method demands multiple people, resulting in a significant waste of human resources. Furthermore, the constant resistance to the spring force during this process makes the operation difficult and prone to assembly slippage, causing parts to be thrown away by the spring force. This not only damages parts and increases maintenance costs but also poses a risk of falling objects, threatening the personal safety of maintenance personnel. It also significantly impacts the efficiency of train maintenance operations, extending maintenance time. Utility Model Content

[0005] The purpose of this application is to provide a tooling for replacing the independent springs of the pantograph spring box. This addresses the problems mentioned in the background art regarding the replacement of independent tension springs in pantograph spring boxes, including wasted manpower and resources, inconvenient operation, low efficiency, and high safety risks.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] A tooling for replacing the independent spring of the pantograph spring box, comprising a pantograph-shaped body and an adjusting component;

[0008] The adjusting component includes a push screw, a load-bearing guard plate, and a bow head;

[0009] The bow head is located at one end of the bow-shaped body, and the bow head is used to be attached to the transverse screw of the spring box.

[0010] The push screw is rotatably disposed at the other end of the bow-shaped body, and the load-bearing guard plate is rotatably connected to the push screw. The load-bearing guard plate is used to contact the spring box mounting base.

[0011] In one possible implementation, a finite position head is provided on the bow head.

[0012] In one possible implementation, the limiting head has a slot for accommodating the transverse screw of the spring box.

[0013] In one possible implementation, the push screw is provided with a bolt head.

[0014] In one possible implementation, the bolt head is integrally connected to the push screw.

[0015] In one possible implementation, the load-bearing guard plate is detachably connected to the push screw.

[0016] In one possible implementation, the load-bearing guard plate is provided with anti-slip buckles.

[0017] In one possible implementation, a protective sleeve is provided on the bow-shaped body.

[0018] In one possible implementation, the surface of the load-bearing guard plate that contacts the spring box mounting base is provided with an anti-slip and wear-resistant layer.

[0019] In one possible implementation, the bow-shaped body is made of aluminum alloy.

[0020] Compared with the prior art, this application has the following beneficial effects:

[0021] This application provides a tooling for replacing the independent springs of a pantograph spring box. The pantograph head is attached to a transverse screw on the spring box, which rotates the screw, causing a load-bearing plate to contact the spring box mounting base. This applies force, releasing the elasticity of the independent spring, facilitating disassembly and replacement. Compared to traditional replacement methods, this reduces manpower requirements, increases replacement efficiency, and lowers operational risks.

[0022] In one possible implementation, the limiting head prevents the bow head from accidentally slipping off during the attachment process, improving the stability and safety of the tooling during use. When force is applied to the independent spring of the spring box, the limiting head can better fix the relative position of the bow head and the transverse screw of the spring box, ensuring smooth operation.

[0023] In one possible implementation, the slot further enhances the limiting effect of the limiting head on the transverse screw of the spring box. When the bow head is engaged with the transverse screw of the spring box, the screw is embedded in the slot, effectively preventing the screw from shaking and shifting during tooling operation, making the connection between the tooling and the spring box more stable, and improving the accuracy and reliability of the independent spring replacement operation.

[0024] In one possible implementation, the bolt head design facilitates the operator's use of tools to rotate the push screw. Using a ratchet wrench makes applying torque easier, reducing the effort required to rotate the push screw and improving the convenience and efficiency of tooling operations.

[0025] In one possible implementation, the anti-slip buckle increases the friction between the load-bearing guard plate and the spring box mounting base, preventing the load-bearing guard plate from sliding during tooling operation and improving the stability and safety of the tooling. When a large force is applied to the independent spring of the spring box, the anti-slip buckle can better ensure the relative position of the load-bearing guard plate and the mounting base is fixed, ensuring smooth operation. Attached Figure Description

[0026] Figure 1 This application provides a schematic diagram of the overall structure of a tooling for replacing the independent spring of the pantograph spring box.

[0027] The attached diagram is labeled as follows: 1. Bow-shaped main body; 2. Adjusting component; 21. Push screw; 22. Load-bearing guard plate; 23. Bow head; 24. Limiting head; 25. Slot; 26. Bolt head; 27. Anti-slip buckle. Detailed Implementation

[0028] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0029] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] like Figure 1 As shown, this application discloses a tooling for replacing the independent spring of the pantograph spring box. The tooling for replacing the independent spring of the pantograph spring box includes a bow-shaped body 1 and an adjusting member 2.

[0035] The adjusting component 2 includes a push screw 21, a load-bearing guard plate 22, and an arch head 23.

[0036] The bow head 23 is located at one end of the bow-shaped body and is used to attach to the transverse screw of the spring box.

[0037] Optionally, the bow-shaped body 1 is made of one piece of metal and has a suitable curvature and size to adapt to the spatial structure around the pantograph spring box.

[0038] The push screw 21 is rotatably mounted at the other end of the bow-shaped body. Specifically, the push screw 21 is connected to the other end of the bow-shaped body 1 by a thread, which enables rotation.

[0039] The load-bearing guard plate 22 is rotatably connected to the push screw 21, and the load-bearing guard plate 22 is used to contact the spring box mounting base.

[0040] The load-bearing guard plate 22 is rotatably connected to the end of the push screw 21 via a bearing, so that when the push screw 21 rotates, the load-bearing guard plate 22 will not rotate with it, and can better contact the spring box mounting base.

[0041] The bow head 23 is welded to one end of the bow-shaped body 1, and its shape and size are designed to be accurately attached to the transverse screw of the spring box.

[0042] In use, adjust the push screw 21 counterclockwise to adjust the distance between the load-bearing guard plate 22 and the bow head 23 to a suitable distance. Place the bow-shaped body 1 above the spring box, across the spring plate, so that the bow head 23 engages with the transverse screw of the spring box, causing the load-bearing guard plate 22 to move and engage with the spring box mounting base. Adjust the push screw 21 clockwise to apply force to the load-bearing guard plate 22 and the bow head 23, thereby releasing the elastic force of the independent tension spring of the spring box and returning it to a naturally extended state for easy disassembly.

[0043] After replacement, rotate the push screw 21 counterclockwise to cause the push screw 21 to separate the load-bearing guard plate 22 from the spring box mounting base. After adjusting to a suitable distance, remove the bow-shaped main body 1.

[0044] In this embodiment, the bow head 23 is attached to the transverse screw of the spring box, which drives the screw 21 to rotate, causing the load-bearing guard plate 22 to contact the spring box mounting base. This applies force to release the elastic force of the independent spring in the spring box, facilitating the disassembly and replacement of the independent spring. Compared with traditional replacement methods, this reduces manpower requirements, improves replacement efficiency, and lowers operational risks.

[0045] In one possible embodiment, a limiting head 24 is provided on the bow head 23.

[0046] A limiting head 24 is welded to the end of the bow head 23. The limiting head 24 is made of a metal material with high hardness, and its shape is block-shaped and of moderate size, so as not to affect the bow head 23 from being hooked onto the transverse screw of the spring box.

[0047] In this embodiment, the limiting head 24 prevents the bow head 23 from accidentally slipping off during the attachment process, improving the stability and safety of the tooling during use. When a force is applied to the independent spring of the spring box, the limiting head 24 can better fix the relative position of the bow head 23 and the transverse screw of the spring box, ensuring smooth operation.

[0048] In one possible embodiment, the limiting head 24 has a slot 25 for accommodating the transverse screw of the spring box.

[0049] A slot 25 is machined. The width and depth of the slot 25 are precisely designed according to the diameter and shape of the spring box transverse screw to ensure that the slot 25 can tightly accommodate the spring box transverse screw.

[0050] In this embodiment, the slot 25 further enhances the limiting effect of the limiting head 24 on the transverse screw of the spring box. When the bow head 23 is attached to the transverse screw of the spring box, the screw is embedded in the slot 25, effectively preventing the screw from shaking and shifting during tooling operation, making the connection between the tooling and the spring box more stable, and improving the accuracy and reliability of the independent spring replacement operation.

[0051] In one possible embodiment, the push screw 21 is provided with a bolt head 26.

[0052] At the end of the push screw 21, a bolt head 26 is integrally formed by forging. The bolt head 26 can be hexagonal in shape and its size is compatible with commonly used ratchet wrenches.

[0053] In this embodiment, the bolt head 26 facilitates the operator's use of tools to rotate the push screw 21. Using a ratchet wrench makes applying torque easier, reducing the effort required to rotate the push screw 21 and improving the convenience and efficiency of tooling operations.

[0054] In one possible embodiment, the bolt head 26 is integrally connected to the push screw 21.

[0055] The push screw 21 and bolt head 26 are manufactured using an integral molding process to ensure good connection strength and integrity between them. After integral molding, the bolt head 26 and push screw 21 undergo surface treatment to improve their wear resistance and corrosion resistance.

[0056] In this embodiment, the integrally connected bolt head 26 and push screw 21 prevent loosening or separation during use, ensuring operational stability and reliability. Simultaneously, the one-piece molding process reduces assembly steps, improving tooling manufacturing efficiency and quality.

[0057] In one possible embodiment, the load-bearing guard plate 22 is detachably connected to the push screw 21.

[0058] Specifically, the load-bearing guard plate 22 and the push screw 21 are detachably connected by a threaded connection. An external thread is machined at the end of the push screw 21, and a corresponding internal thread is machined on the load-bearing guard plate 22. The two are then connected by screwing. Additionally, to prevent loosening of the threads during use, a lock nut can be used for reinforcement.

[0059] In this embodiment, the detachable connection design facilitates the replacement and maintenance of the load-bearing guard plate 22. When the load-bearing guard plate 22 becomes worn or damaged, it can be easily removed from the push screw 21 for replacement without replacing the entire tooling, thus reducing usage costs. Furthermore, load-bearing guard plates 22 of different sizes or shapes can be replaced as needed in different application scenarios, improving the versatility of the tooling.

[0060] In one possible embodiment, the load-bearing guard plate 22 is provided with anti-slip buckles 27.

[0061] Anti-slip clips 27 are welded onto the surface of the load-bearing guard plate 22 that contacts the spring box mounting base. The anti-slip clips 27 are made of the same material as the load-bearing guard plate 22 and are used to snap into the spring mounting base.

[0062] In this embodiment, the anti-slip buckle 27 increases the friction between the load-bearing guard plate 22 and the spring box mounting base, preventing the load-bearing guard plate 22 from sliding during tooling operation and improving the stability and safety of the tooling. When a large force is applied to the independent spring of the spring box, the anti-slip buckle 27 can better ensure the relative position of the load-bearing guard plate 22 and the mounting base is fixed, ensuring smooth operation.

[0063] In one possible embodiment, a protective sleeve is provided on the bow-shaped body 1.

[0064] A protective sleeve is placed over the surface of the bow-shaped body 1. The protective sleeve is made of elastic and cushioning materials such as rubber or silicone and is fitted tightly onto the bow-shaped body 1.

[0065] In this embodiment, the protective sleeve protects the bow-shaped body 1 from scratches and collisions during use, extending its service life. Simultaneously, the protective sleeve also acts as a buffer, reducing the impact force between the bow-shaped body 1 and surrounding components during operation, thus lowering the risk of damage to other parts of the pantograph.

[0066] In one possible embodiment, the surface of the load-bearing guard plate 22 that contacts the spring box mounting base is provided with an anti-slip and wear-resistant layer.

[0067] On the surface of the load-bearing guard plate 22 that contacts the spring box mounting base, a non-slip and wear-resistant layer is formed by spraying or plating. The non-slip and wear-resistant layer can be a special metal alloy coating with high hardness and coefficient of friction.

[0068] In this embodiment, the anti-slip and wear-resistant layer increases the friction between the load-bearing guard plate 22 and the spring box mounting base, and also improves the wear resistance of the surface of the load-bearing guard plate 22. During frequent use, the anti-slip and wear-resistant layer can effectively reduce the wear of the load-bearing guard plate 22, extend its service life, and ensure good contact and stable force distribution between the load-bearing guard plate 22 and the mounting base under various working conditions.

[0069] In one possible embodiment, the bow-shaped body 1 is made of aluminum alloy.

[0070] Optionally, the bow-shaped body 1 can be made of high-strength aluminum alloy, such as 6061-T6 aluminum alloy. The basic shape of the bow-shaped body 1 is manufactured through an extrusion molding process, followed by machining and surface treatment to achieve the required dimensions and precision.

[0071] In this embodiment, aluminum alloy is characterized by its light weight and high strength. Using this material to manufacture the bow-shaped body 1 ensures sufficient strength and rigidity of the tooling while reducing its overall weight, making it easier for operators to carry and handle. Furthermore, aluminum alloy has excellent corrosion resistance, extending the tooling's service life and reducing maintenance costs.

[0072] Finally, it should be noted that 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 to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A tooling for replacing the independent spring of the pantograph spring box, characterized in that, It includes an arc-shaped main body (1) and an adjusting component (2); The adjusting component (2) includes a push screw (21), a load-bearing guard plate (22), and a bow head (23); The bow head (23) is located at one end of the bow-shaped body, and the bow head (23) is used to be attached to the transverse screw of the spring box; The push screw (21) is rotatably disposed at the other end of the bow-shaped body, and the load-bearing guard plate (22) is rotatably connected to the push screw (21). The load-bearing guard plate (22) is used to contact the spring box mounting base.

2. The tooling for replacing the independent spring of the pantograph spring box according to claim 1, characterized in that, A limiting head (24) is provided on the bow head (23).

3. The tooling for replacing the independent spring of the pantograph spring box according to claim 2, characterized in that, The limiting head (24) is provided with a slot (25) for accommodating the transverse screw of the spring box.

4. The tooling for replacing the independent spring of the pantograph spring box according to claim 1, characterized in that, The push screw (21) is provided with a bolt head (26).

5. The tooling for replacing the independent spring of the pantograph spring box according to claim 4, characterized in that, The bolt head (26) is integrally connected to the push screw (21).

6. The tooling for replacing the independent spring of the pantograph spring box according to claim 1, characterized in that, The load-bearing guard plate (22) is detachably connected to the push screw (21).

7. The tooling for replacing the independent spring of the pantograph spring box according to claim 1, characterized in that, The load-bearing guard plate (22) is provided with anti-slip buckles (27).

8. The tooling for replacing the independent spring of the pantograph spring box according to claim 1, characterized in that, A protective sleeve is provided on the bow-shaped main body (1).

9. The tooling for replacing the independent spring of the pantograph spring box according to claim 1, characterized in that, The surface of the load-bearing guard plate (22) that contacts the spring box mounting base is provided with an anti-slip and wear-resistant layer.

10. The tooling for replacing the independent spring of the pantograph spring box according to claim 1, characterized in that, The bow-shaped main body (1) is made of aluminum alloy.

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