A kind of rail transit vehicle wheelset gear box paint protection device

Abstract

The utility model discloses a kind of paint protection devices of rail transit vehicle wheelset gear box, it includes support inner ring, the support inner ring is arc, its contour is matched with the curved surface shape of motor train wheelset gear box shell, magnet is embedded in the upper outer surface of the support inner ring, for adsorbing to be attached in gear box shell, protective cover plate is fixedly installed in the outer side of the support inner ring, the protective cover plate contour is greater than and completely covers the bolt area needing protection on gear box, sealing glue is daubed at the connecting bonding surface of the protective cover plate and support inner ring. The device eliminates the cumbersome steps of traditional adhesive tape cutting, sticking, tearing, greatly improves work efficiency. The product uses magnetic force adsorption fixation, protective cover plate and bolt mark surface keep non-contact state, completely avoid the risk of secondary damage to bolt anti-loose mark when disassembling, and will not leave any glue stain residue on paint surface.

Description

Technical Field

[0001] This utility model relates to the field of rail transit vehicle maintenance technology, and in particular to a paint protection device for the wheelset gearbox of a rail transit vehicle. Background Technology

[0002] During the maintenance and repair of rail transit vehicles, wheelsets require axle paint stripping, flaw detection, and repainting. After the wheels of a rail transit vehicle are pressed into place, the gap between the gearbox and the wheel is extremely small, typically only about 70mm. At this point, the gearbox has already undergone maintenance, and anti-loosening marks have been made on the surface of its fastening bolts.

[0003] Traditional wheelset coating protection mainly involves pasting protective tape or film onto the gearbox surface, but this method has significant drawbacks:

[0004] 1. Inefficient: The operation is cumbersome and time-consuming, requiring the cutting and pasting of tape / film according to the complex structure of the gearbox.

[0005] 2. Risk of damage to markings: The adhesive layer of the tape can easily cause secondary damage or detachment of the bolt anti-loosening markings during disassembly.

[0006] 3. Residue problem: Tape can easily leave adhesive residue on painted surfaces, affecting the appearance and potentially interfering with subsequent inspections.

[0007] 4. Limited operating space: The bottom of the wheelset gearbox has a limited height from the ground, making it difficult to perform fine pasting work in a confined space.

[0008] Therefore, there is an urgent need to develop a protective device that can overcome the above-mentioned defects, and this has been put on the research agenda. Utility Model Content

[0009] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a paint protection device for quickly and effectively protecting the marked surfaces of gearbox bolts from paint contamination.

[0010] This utility model discloses a paint protection device for a wheelset gearbox of a rail transit vehicle, comprising a supporting inner ring, the supporting inner ring being arc-shaped and its outline matching the curved surface shape of the gearbox housing. A magnet is embedded in the upper outer surface of the supporting inner ring for adhering to the gearbox housing. A protective cover is fixedly installed on the outer side of the supporting inner ring, the protective cover having a profile larger than and completely covering the bolt area on the gearbox requiring protection. Sealant is applied to the contact surface between the protective cover and the supporting inner ring.

[0011] According to some embodiments of this utility model, the inner support ring is installed on the protective cover plate by screws.

[0012] According to some embodiments of this utility model, the supporting inner ring is made of a non-metallic material that is elastic and wear-resistant.

[0013] According to some embodiments of the present invention, the protective cover is made of a lightweight material that is resistant to paint corrosion.

[0014] According to some embodiments of this utility model, the protective cover is a PVC sheet with a thickness of 3mm.

[0015] According to some embodiments of the present invention, a gap is provided between the inner surface of the protective cover and the bolts of the train wheelset gearbox.

[0016] According to some embodiments of this utility model, the gap is 5mm.

[0017] According to some embodiments of this utility model, the magnet is a permanent magnet block.

[0018] According to some embodiments of this utility model, there are several magnets, which are evenly distributed in a straight line on the upper outer surface of the inner support ring.

[0019] According to some embodiments of the present invention, the magnet is embedded and fixed on the inner support ring.

[0020] This invention offers at least the following advantages: The device eliminates the tedious steps of cutting, pasting, and removing traditional tape, significantly improving work efficiency. Utilizing magnetic adsorption, the protective cover remains in contact with the bolt markings, completely avoiding the risk of secondary damage to the bolt anti-loosening marks during disassembly, and leaving no adhesive residue on the painted surface. Furthermore, the protective cover is customized to the protected area, completely covering the bolt markings, and combined with sealing at the joints, effectively preventing contamination caused by paint splattering or dripping.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Reference Figure 1 , Figure 2 A paint protection device for a wheelset gearbox of a rail transit vehicle includes a supporting inner ring 1. The supporting inner ring 1 is made of a non-metallic material with elasticity and wear resistance, such as nylon rubber. The supporting inner ring 1 is arc-shaped, and its outline matches the curved surface shape of the gearbox housing, ensuring a tight fit after installation. Magnets 2 are embedded in the upper outer surface of the supporting inner ring 1 for adhering to the gearbox housing. The magnets 2 are permanent magnet blocks. To ensure sufficient magnetic force to firmly adhere the supporting inner ring to the metal surface of the gearbox housing, several magnets 2 are evenly distributed at a predetermined interval on the upper outer surface of the supporting inner ring 1. To prevent the magnets 2 from falling off during operation, the magnets 2 are embedded and fixed to the supporting inner ring 1.

[0030] A protective cover plate 3 is fixedly installed on the outer side of the inner support ring 1. The protective cover plate 3 is made of a lightweight, paint-resistant material, such as a 3mm thick PVC sheet. This material effectively reduces the weight of the product and facilitates operation. The outline of the protective cover plate 3 is larger than and completely covers the bolt area on the gearbox that needs protection. The edge of the protective cover plate can be appropriately extended according to the bolt distribution. To ensure a firm and reliable connection, the inner support ring 1 is installed to the protective cover plate 3 with screws 4. To prevent paint penetration, sealant is applied to the contact surface between the protective cover plate 3 and the inner support ring 1 for sealing.

[0031] To ensure that the protective cover does not touch or abrade the bolts and their markings during product loading and unloading, a gap of 5mm is provided between the inner surface of the protective cover 3 and the train wheelset gearbox bolts.

[0032] Before painting the wheelset, align the contoured surface of the inner support ring 1 of this device with the corresponding part of the gearbox housing, press gently, and the embedded magnet 2 will quickly attract and fix it. The protective cover 3 will then automatically cover the bolt marking surface. After the painting operation is completed, simply apply force to overcome the magnetic force and remove the entire device. The disassembly process is quick and will not damage the markings or paint surface, eliminating the tedious steps of cutting, pasting, and tearing traditional tape, greatly improving work efficiency. This product uses magnetic attraction for fixation, and the protective cover 3 remains in a non-contact state with the bolt marking surface, completely avoiding the risk of secondary damage to the bolt anti-loosening markings during disassembly, and leaving no adhesive residue on the paint surface. In addition, the protective cover 3 is customized according to the protected area, which can completely cover the bolt marking surface that needs to be protected. Combined with the sealing treatment at the connection, it effectively prevents pollution caused by paint splashing or running.

[0033] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A paint protection device for the wheelset gearbox of a rail transit vehicle, characterized in that, The system includes a supporting inner ring (1), which is arc-shaped and its outline matches the curved surface shape of the gearbox housing. A magnet (2) is embedded on the upper outer surface of the supporting inner ring (1) for adsorption and attachment to the gearbox housing. A protective cover plate (3) is fixedly installed on the outer side of the supporting inner ring (1). The outline of the protective cover plate (3) is larger than and completely covers the bolt area on the gearbox that needs protection. Sealant is applied to the contact surface between the protective cover plate (3) and the supporting inner ring (1).

2. The paint protection device for a wheel set gearbox of a rail transit vehicle according to claim 1, characterized in that, The inner support ring (1) is installed to the protective cover plate (3) by screws (4).

3. The paint protection device for a wheel set gearbox of a rail transit vehicle according to claim 1, characterized in that, The inner support ring (1) is made of a non-metallic material that is elastic and wear-resistant.

4. The paint protection device for a wheel set gearbox of a rail transit vehicle according to claim 1, characterized in that, The protective cover (3) is made of a lightweight, paint-resistant material.

5. A paint protection device for a wheelset gearbox of a rail transit vehicle according to claim 4, characterized in that, The protective cover (3) is a PVC sheet with a thickness of 3mm.

6. A paint protection device for a wheel set gearbox of a rail transit vehicle according to claim 1, characterized in that, A gap is provided between the inner surface of the protective cover plate (3) and the bolts of the gearbox of the train wheelset.

7. A paint protection device for a wheel set gearbox of a rail transit vehicle according to claim 6, characterized in that, The gap is 5mm.

8. A paint protection device for a wheel set gearbox of a rail transit vehicle according to claim 1, characterized in that, The magnet (2) is a permanent magnet block.

9. A paint protection device for a wheel set gearbox of a rail transit vehicle according to claim 1, characterized in that, The magnets (2) are a plurality of ones, which are evenly distributed in a straight line on the upper outer surface of the inner supporting ring (1).

10. A paint protection device for a wheel set gearbox of a rail transit vehicle according to claim 1, characterized in that, The magnet (2) is embedded and fixed on the inner support ring (1).

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