A precision structural component for a track traction chain with self-cleaning function

Abstract

This utility model belongs to the field of track traction chain cleaning technology, and discloses a precision structural component for track traction chains with self-cleaning function. The component includes a traction chain, comprising an inner chain plate, an outer chain plate, a pin, and rollers. It also includes an elastic scraper, located inside the inner chain plate. The elastic scraper has an integrally formed fixed end, a connecting part, and a free end. The fixed end is fixedly installed inside the inner chain plate, and as the traction chain moves, the free end can scrape dirt from the surface of the outer chain plate. The contact surface between the inner and outer chain plates has a nano-level textured surface to reduce dirt adhesion. This utility model employs a multi-layered design—physical scraping with an elastic scraper, dynamic drainage with a spiral oil guide groove, and chemical protection with an oleophobic coating—to form a synergistic self-cleaning mechanism. This significantly improves the chain's resistance to contamination in complex environments and solves the problem that most chain structures lack self-cleaning functionality.

Description

Technical Field

[0001] This utility model relates to the field of track traction chain cleaning technology, and in particular to a precision structural component for track traction chains with self-cleaning function. Background Technology

[0002] The precision structural component of the track traction chain with self-cleaning function is a key transmission device specifically designed for rail transit systems. Its core design goal is to automatically remove surface contaminants (such as oil, dust, ice, etc.) through the integration of materials, structure, or function, thereby improving operational stability, extending service life, and reducing the need for manual maintenance.

[0003] The track traction chain is a key transmission component in rail transit systems. Operating in a complex environment for extended periods, it is prone to accumulating dust, oil, and foreign matter, leading to accelerated chain wear, reduced transmission efficiency, and even malfunctions. Traditional chain cleaning mainly relies on regular manual maintenance or external cleaning devices, which suffers from high maintenance costs and incomplete cleaning. Most existing chain structures lack self-cleaning capabilities, and the few solutions using special coatings or materials are costly and lack durability. Therefore, we propose a precision structural component for track traction chains with self-cleaning capabilities. Utility Model Content

[0004] In view of the fact that most of the existing chain structures do not have self-cleaning function, and the few solutions that use special coatings or materials have problems such as high cost and insufficient durability, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A precision structural component for a track traction chain with self-cleaning function includes a traction chain, which comprises an inner chain plate, an outer chain plate, a pin, and rollers. It also includes an elastic scraper disposed on the inner side of the inner chain plate. The elastic scraper includes an integrally formed fixed end, a connecting portion, and a free end. The fixed end is fixedly installed on the inner side of the inner chain plate, and when the traction chain moves, the free end can scrape away dirt from the surface of the outer chain plate.

[0007] As a technical solution of the precision structural component of the track traction chain with self-cleaning function described in this utility model, wherein: the contact surface of the inner chain plate and the outer chain plate is provided with nano-level concave-convex texture for reducing the adhesion of dirt.

[0008] As a technical solution of the precision structural component of the track traction chain with self-cleaning function described in this utility model, wherein: the end of the pin shaft is provided with a micro oil storage cavity arranged in a circumferential array and inclined, and the micro oil storage cavity is filled with a porous oil storage material.

[0009] As a technical solution of the precision structural component of the track traction chain with self-cleaning function described in this utility model, the outer surface of the roller is provided with a spiral oil guide groove, and the lubricating oil is evenly distributed and surface dirt is squeezed out during the rolling process.

[0010] As a technical solution of the precision structural component of the track traction chain with self-cleaning function described in this utility model, the elastic scraper is made of stainless steel spring steel sheet, and the free end of the elastic scraper maintains elastic contact with the surface of the outer chain plate.

[0011] As a technical solution of the precision structural component of the track traction chain with self-cleaning function described in this utility model, all chain plates on the traction chain are treated with an oleophobic and hydrophobic coating.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects:

[0013] 1. This utility model adopts a multi-layered design that uses elastic scrapers for physical scraping, spiral oil guide grooves for dynamic sewage discharge, and oleophobic coating for chemical protection to form a synergistic self-cleaning mechanism. This can significantly improve the chain's anti-pollution ability in complex environments, while solving the problem that most chain structures do not have self-cleaning functions.

[0014] 2. This utility model reduces the wear point by using nano-level concave-convex texture, and the micro oil storage cavity and spiral oil guide groove can optimize the lubrication state. At the same time, combined with the selection of highly elastic materials, it can extend the service life of the traction chain and reduce the maintenance cost of the whole life cycle in multiple dimensions. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the traction chain structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the sub-chain assembly structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the exploded structure of the sub-chain of this utility model.

[0019] Figure 4 For the present utility model Figure 3Enlarged structural diagram at point A in the middle.

[0020] Explanation of reference numerals in the attached figures:

[0021] In the diagram: 1. Traction chain; 11. Inner chain plate; 12. Outer chain plate; 13. Pin; 131. Miniature oil storage chamber; 132. Porous oil storage material; 14. Roller; 141. Spiral oil guide groove; 15. Elastic scraper; 151. Fixed end; 152. Connecting part; 153. Free end. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0025] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0026] Reference Figures 1-4A precision structural assembly for a track traction chain with self-cleaning function is provided. This precision structural assembly for a track traction chain with self-cleaning function includes a traction chain 1, which includes an inner chain plate 11, an outer chain plate 12, a pin 13, and a roller 14. It also includes an elastic scraper 15, which is disposed inside the inner chain plate 11. The elastic scraper 15 includes an integrally formed fixed end 151, a connecting portion 152, and a free end 153. The fixed end 151 is fixedly installed inside the inner chain plate 11, and when the traction chain 1 moves, the free end 153 can scrape off dirt from the surface of the outer chain plate 12. The elastic scraper 15 is made of stainless steel spring steel sheet, and the free end 153 of the elastic scraper 15... The 53 maintains elastic contact with the surface of the outer chain plate 12. In application, a stainless steel spring steel sheet with a thickness of 0.3-0.5mm is stamped into an integral structure with a fixed end 151, a 15° arc-shaped connecting part 152 and a wedge-shaped free end 153. It is fixed to the inner side of the inner chain plate 11 by laser welding to ensure that the free end 153 forms an elastic contact pressure of 0.5-1.2N with the surface of the outer chain plate 12. At the same time, the design of the integrally formed elastic scraper 15 can actively scrape off the dirt on the surface of the outer chain plate 12 when the traction chain 1 moves, realizing dynamic self-cleaning and reducing manual intervention. Meanwhile, the stainless steel spring steel material ensures long-term elastic contact of the elastic scraper 15, avoiding failure of the cleaning function due to wear and improving durability.

[0027] Reference Figure 2 and Figure 3 The contact surfaces of the inner chain plate 11 and the outer chain plate 12 are provided with nanoscale textured surfaces to reduce dirt adhesion. In application, a honeycomb textured surface with a depth of 5-10 μm and a spacing of 20-50 μm is created on the contact surfaces of the chain plates using laser micro-engraving technology. The surface roughness Ra≤0.1 μm. After treatment, a polytetrafluoroethylene composite coating is sprayed on. The nanoscale texture on the contact surfaces of the inner chain plate 11 and the outer chain plate 12 reduces the contact area and surface energy, thereby reducing the probability of dirt adhesion and reducing the accumulation of pollutants from the source.

[0028] Reference Figure 3 and Figure 4 The pin 13 has micro oil reservoirs 131 arranged in a circumferential array and tilted at its end. The micro oil reservoirs 131 are filled with porous oil reservoir material 132. In application, micro oil reservoirs 131 with a 30° tilt and a diameter of 0.8 mm are machined at both ends of the pin 13, filled with copper-based sintered porous material, and pre-filled with grease containing molybdenum disulfide. The tilted micro oil reservoirs 131 combined with the porous oil reservoir material 132 can realize the slow release of lubricating oil, continuously lubricate the friction surface of the pin 13, and reduce the wear rate.

[0029] Reference Figure 3 and Figure 4The outer surface of the roller 14 is provided with a spiral oil guide groove 141, which distributes the lubricating oil evenly and squeezes out surface dirt during the rolling process. In application, a spiral oil guide groove 141 with a pitch of 3 mm and a depth of 0.2 mm is machined on the outer surface of the roller 14. The end of the groove extends to the end face of the roller 14 to form a drain port. The spiral oil guide groove 141 on the surface of the roller 14 distributes the lubricating oil evenly and squeezes out surface dirt through the rolling and squeezing action, which has the dual functions of lubrication enhancement and dirt discharge.

[0030] Reference Figures 1-4 All chain plates on the traction chain 1 are treated with an oleophobic and hydrophobic coating. In application, the coating treatment on the entire chain plate surface forms a chemical barrier to prevent oil stains from penetrating and adhering, forming a complementary protection with the physical cleaning structure.

[0031] The working principle of this utility model is as follows: When the traction chain 1 starts running, the free end 153 of the elastic scraper 15 is relatively displaced due to the bending of the traction chain 1, and reciprocates to scrape the surface of the outer chain plate 12 to remove particulate contaminants on the outer chain plate 12. Meanwhile, the micro oil storage cavity 131 on the pin 13 releases lubricant when the friction heats up. The lubricant is evenly coated on the surface of the roller 14 by the centrifugal action of the spiral oil guide groove 141, and the contaminant particles are thrown out through the groove. The nano-level uneven textured surface makes the oil stains form discontinuous droplets, reducing the adhesion strength. At the same time, the oleophobic and hydrophobic coating prevents the oil stains from penetrating. Combined with the periodic cleaning of the elastic scraper 15, a dynamic anti-fouling barrier is formed, which can significantly improve the anti-fouling ability of the traction chain 1 in complex environments.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A precision structural assembly for a track traction chain with self-cleaning function, comprising a traction chain (1), wherein the traction chain (1) includes an inner chain plate (11), an outer chain plate (12), a pin (13), and rollers (14), characterized in that: Also includes: The elastic scraper (15) is located inside the inner chain plate (11). The elastic scraper (15) includes an integrally formed fixed end (151), a connecting part (152), and a free end (153). The fixed end (151) is fixedly installed inside the inner chain plate (11), and when it moves with the traction chain (1), the free end (153) can scrape off the dirt on the surface of the outer chain plate (12).

2. The rail traction chain precision structure assembly with self-cleaning function according to claim 1, characterized in that: The contact surfaces of the inner chain plate (11) and the outer chain plate (12) are provided with nanoscale textured surfaces to reduce dirt adhesion.

3. The rail traction chain precision structure assembly with self-cleaning function according to claim 1, characterized in that: The end of the pin (13) has a micro oil storage cavity (131) arranged in a circumferential array and tilted, and the micro oil storage cavity (131) is filled with a porous oil storage material (132).

4. The rail traction chain precision structure assembly with self-cleaning function according to claim 1, characterized in that: The outer surface of the roller (14) is provided with a spiral oil guide groove (141), which distributes the lubricating oil evenly and squeezes out surface dirt during the rolling process.

5. The rail traction chain precision structure assembly with self-cleaning function according to claim 1, characterized in that: The elastic scraper (15) is made of stainless steel spring steel sheet, and the free end (153) of the elastic scraper (15) maintains elastic contact with the surface of the outer chain plate (12).

6. The rail chain assembly according to any one of claims 1 to 5, wherein the rail chain assembly has a self-cleaning function. All chain plates on the traction chain (1) are treated with an oleophobic and hydrophobic coating.

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