Novel motor train unit wheel set hollow shaft cleaner

Abstract

The utility model relates to the field of cleaning equipment, and particularly discloses a novel motor train unit wheel set hollow shaft cleaner which comprises a cleaning head and a rod body, the cleaning head is detachably connected with the rod body, the cleaning head comprises a cleaning head body, and the cleaning head body is connected with the rod body. The cleaning head body is sequentially sleeved with an aluminum alloy spacer bush, a nylon pressing plate and a nylon outer hexagon bolt from the end close to the rod body to the end away from the rod body, and the aluminum alloy spacer bush is sleeved with a first silica gel scraper assembly. When the silica gel scraper assembly enters the motor train unit wheel set hollow shaft or retreats from the motor train unit wheel set hollow shaft, directional pressure difference can be generated in the motor train unit wheel set hollow shaft to form the piston effect, dirt in the motor train unit wheel set hollow shaft is discharged through the piston effect, and the cleaning efficiency is improved; and meanwhile, cleaning paper is omitted, the cleaning head can be independently replaced, the operation and maintenance cost is reduced, and the problems that an existing motor train unit wheel set hollow shaft cleaner is low in cleaning efficiency, high in operation and maintenance cost and high in safety risk are solved.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment, and specifically discloses a novel hollow shaft cleaner for high-speed train wheelsets. Background Technology

[0002] Hollow axles for high-speed train wheelsets are a crucial component and a key part of ensuring operational safety. With the increasing maintenance workload of high-speed trains in the railway system, the cleaning of hollow axles, a vital aspect of flaw detection, has become increasingly important. Faced with heavy maintenance tasks, the efficiency and thoroughness of hollow axle cleaning directly affect the accuracy of flaw detection results. Traditional cleaning methods are no longer sufficient to meet the demands of high-frequency, large-scale operations. Due to the complex internal structure of hollow axles, which are relatively enclosed and narrow spaces, dirt, oil, metal debris, and other impurities easily accumulate within, making them difficult to clean thoroughly with conventional wiping. Inadequate cleaning can interfere with ultrasonic testing signals during flaw detection, making it difficult to accurately detect minute cracks and defects, thus posing a safety hazard to train operation. Time costs are also a significant factor. Increased maintenance workloads mean more compact work processes; lengthy and inefficient cleaning processes can cause delays, hindering the overall maintenance schedule and affecting the timely commissioning of high-speed trains. Moreover, if the cleaning is not thorough, the flaws will be found during the inspection and a second cleaning and re-inspection will be required, which will greatly waste human and material resources and reduce the operating efficiency of the maintenance workshop.

[0003] Currently, the hollow axle cleaners used for flaw detection of EMU wheelsets in various railway EMU depots are all one-piece sponge heads and rods, and require multiple cleanings with a large amount of special cleaning paper to barely achieve a cleaning effect. Existing hollow axle cleaners for EMU wheelsets have the following drawbacks:

[0004] 1. Low cleaning efficiency. Although sponges have high oil absorption, they tend to come loose after repeated use, resulting in poor cleaning effectiveness. Repeated cleaning is required to achieve the desired cleaning effect, which greatly reduces cleaning efficiency.

[0005] 2. High Operation and Maintenance Costs. Once the sponges on the existing hollow axle cleaners for EMU wheelsets lose their cleaning function, the manufacturer's monopoly on these cleaners prevents the separate purchase of cleaning heads. The entire assembly, including the cleaning head, must be replaced, increasing operation and maintenance costs. With the development of high-speed rail, the amount of EMU maintenance is increasing year by year. The annual cost of replacing hollow axle cleaners for EMU wheelsets in a single EMU depot is approximately 150,000 yuan. There are seven EMU depots and about 50 EMU maintenance stations nationwide, all of which involve the replacement of hollow axle cleaners for EMU wheelsets. Therefore, the overall cost of replacing hollow axle cleaners for EMU wheelsets is quite high.

[0006] In addition, the existing hollow shaft cleaners for EMU wheelsets require repeated cleaning with special cleaning paper to achieve the desired cleaning effect. This cleaning paper is expensive, with the annual cleaning paper expenditure for a single EMU depot reaching 50,000 yuan. It can be seen that the overall cost of cleaning paper is relatively high across the seven EMU depots and more than 50 EMU stations nationwide.

[0007] 3. Safety Risks. The cleaning head and rod of the existing hollow shaft cleaner for EMU wheelsets are usually connected by bolts. Over long-term use, the bolts are prone to loosening, posing a safety hazard of bolts falling into the hollow shaft, thus affecting the safe operation of the EMU. In other words, the unreasonable connection structure between the cleaning head and the rod leads to safety risks for the EMU.

[0008] In addition, the existing hollow axle cleaners for EMU wheelsets are telescopic structures, and the total length of the hollow axle cleaner when unfolded is less than the length of the hollow axle. There is a risk that the hollow axle cleaner may be left inside the hollow axle, which could lead to safety hazards in the EMU and has resulted in related accidents. Utility Model Content

[0009] The purpose of this utility model is to provide a new type of hollow axle cleaner for EMU wheelsets, which solves the problems of low cleaning efficiency, high maintenance costs, and safety risks of existing hollow axle cleaners for EMU wheelsets.

[0010] The specific solution of this utility model is as follows:

[0011] A novel hollow axle cleaner for high-speed train wheelsets includes a cleaning head and a rod. The cleaning head and the rod are detachably connected. The cleaning head includes a cleaning head body, which is connected to the rod. An aluminum alloy spacer, a nylon pressure plate, and a nylon hexagonal bolt are sequentially fitted on the cleaning head body from the end closest to the rod to the end furthest from the rod. A first silicone scraper assembly is fitted on the aluminum alloy spacer.

[0012] In some embodiments, a second silicone scraper assembly is also fitted onto the aluminum alloy spacer, with the first silicone scraper assembly and the second silicone scraper assembly disposed opposite to each other.

[0013] In some embodiments, an absorbent sponge is also fitted onto the aluminum alloy sleeve, and the absorbent sponge is disposed between the first silicone scraper assembly and the second silicone scraper assembly.

[0014] In some embodiments, adjacent silicone scrapers in the first silicone scraper assembly and the second silicone scraper assembly are provided with aluminum alloy spacers.

[0015] In some embodiments, the connecting end of the rod is provided with a slot, and the connecting end of the cleaning head is provided with a plug-in part. One end of the plug-in part is inserted into the slot and connected to the rod, and the other end of the plug-in part is connected to the cleaning head body.

[0016] In some embodiments, the slot is provided with a snap-fit ​​hole, the plug part is provided with a snap-fit ​​groove that matches the snap-fit ​​hole, a spring is provided in the snap-fit ​​groove, one end of the spring is fixedly connected to the bottom of the snap-fit ​​groove, and the other end of the spring is provided with a snap-fit ​​part that extends out of the snap-fit ​​hole.

[0017] In some embodiments, the connector is a nylon mandrel.

[0018] In some embodiments, the rod is a titanium alloy tube.

[0019] In some embodiments, a rubber handle is provided on the end of the rod away from the cleaning head.

[0020] In some embodiments, the length of the hollow axle cleaner for train wheelsets is greater than the length of the hollow axle for train wheelsets.

[0021] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0022] 1. This utility model uses a silicone scraper assembly to replace sponges and cleaning paper for cleaning. The silicone scraper assembly can fit tightly against the inner wall of the hollow shaft of the train wheelset. During cleaning, when the silicone scraper assembly enters or exits the hollow shaft of the train wheelset, it generates a directional pressure difference inside the shaft, creating a piston effect. Through this piston effect, the coupling oil, rust-preventive oil, and debris mixture are discharged from the hollow shaft of the train wheelset according to the fluid dynamics and oil adhesion characteristics, eliminating residual hazards, improving cleaning effect, shortening cleaning time, greatly improving cleaning efficiency, eliminating the need for cleaning paper and reducing maintenance costs. Furthermore, it breaks the manufacturer's monopoly by allowing for individual replacement of the cleaning head, further reducing maintenance costs.

[0023] 2. By placing an adsorption sponge between the first and second silicone scraper assemblies, with the silicone scraper assemblies facing opposite directions, the silicone scraper assemblies can perform two cleaning processes on the hollow wheelset axle of the train set when entering and exiting the axle. At the same time, the strong adsorption capacity of the adsorption sponge can adsorb residual dirt, achieving two comprehensive and meticulous cleaning processes, which greatly improves the cleaning effect.

[0024] 3. The cleaning head is detachably connected to the slot of the rod body through the plug part, which replaces the traditional bolt connection. This not only enables quick installation and disassembly, effectively saving installation and disassembly time, but also avoids the safety hazards of bolts falling into the hollow shaft of the train wheelset.

[0025] 4. By using a wheel set hollow shaft cleaner that is longer than the wheel set hollow shaft, the risk of bolts loosening and falling off is avoided, and the safety hazard of the wheel set hollow shaft cleaner being left inside the wheel set hollow shaft is eliminated. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a novel hollow shaft cleaner for EMU wheelsets according to the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the rod body of this utility model.

[0028] Figure 3 This is a schematic diagram of the structure of the plug-in part of this utility model.

[0029] Reference numerals: 1-cleaning head, 11-cleaning head body, 12-aluminum alloy spacer, 13-nylon pressure plate, 14-nylon hexagonal bolt, 15-first silicone scraper assembly, 16-second silicone scraper assembly, 17-absorbent sponge, 18-aluminum alloy spacer, 19-insertion part, 191-slot, 192-spring, 193-slot, 2-rod, 21-slot, 22-slot hole, 23-rubber handle. Detailed Implementation

[0030] The specific implementation method is described below with reference to the accompanying drawings.

[0031] The frequent vibrations and impacts of high-speed train operation are transmitted to the hollow axles of the train wheelsets, resulting in complex alternating stresses on the hollow axles caused by track irregularities, train acceleration and deceleration, and centrifugal forces during high-speed train operation and curves. While the hollow axle reduces weight and helps buffer some stress compared to a solid axle, it also presents significant stress concentration issues in critical areas such as the journals and wheel connections, making them prone to microcrack initiation and affecting long-term service performance. The hollow axle's internal structure is a closed piston shape, and the internal contamination consists of residual coupling oil from flaw detection, a mixture of vaporized rust-preventive oil added after flaw detection, and metal debris.

[0032] The hollow axle of the EMU wheelset is hollow and slender, running axially through the axle; its diameter is usually within a specific range, such as 30mm-65mm; its length varies depending on the model, approximately 1350mm-1356mm; its wall thickness is uniform, requiring a high degree of adaptability to cleaning tools, which must be able to maneuver flexibly without damaging the inner wall.

[0033] High-strength alloy steel, such as chromium-molybdenum steel, is often used for the hollow axles of EMU wheelsets. It has high hardness, good toughness and fatigue resistance, but its chemical activity makes it susceptible to corrosion by certain substances.

[0034] The hollow axles of EMU wheelsets are subjected to complex alternating stresses during EMU operation, including vertical, lateral, and longitudinal loads, which makes it easy for metal debris to accumulate inside the hollow axles. The high-speed operation of the EMU generates frictional heat, which makes oil stains easy to carbonize and adhere to the inner wall of the hollow axles. The hollow axles of EMU wheelsets are also corroded by external dust and moisture, resulting in complex and stubborn dirt composition, which greatly increases the difficulty of cleaning.

[0035] Existing hollow axle cleaners for high-speed train wheelsets typically consist of a cleaning head and a retractable cleaning rod. The cleaning head includes a cleaning base on which a cleaning sponge is directly fixed. The cleaning head and the retractable cleaning rod are connected by bolts. The cleaning principle of existing hollow axle cleaners for high-speed train wheelsets relies on the friction of the cleaning paper combined with the absorbent capacity of the sponge to achieve the cleaning function. The working process of existing hollow axle cleaners for high-speed train wheelsets is as follows: Step 1, fold the cleaning paper and place it at the end of the cleaning head; Step 2, hold the retractable cleaning rod and push the cleaning paper and cleaning head into the hollow axle to wipe back and forth until cleaning is complete. This method relies on the friction of the cleaning paper to wipe away dirt and the absorbent function of the cleaning sponge on the cleaning head to absorb grease inside the hollow axle. Repeated cleaning is required to achieve the desired effect, and the cleaning paper must be replaced after each cleaning. Although the working principle of the existing hollow shaft cleaner for EMU wheelsets is relatively simple, after long-term use, the cleaning sponge will deform and fall out due to stress, making it inconvenient to use. Moreover, the overall cleaning effect is not ideal, and multiple cleanings are required to meet the cleanliness requirements of subsequent ultrasonic flaw detection of hollow shafts.

[0036] Example 1

[0037] A new type of hollow axle cleaner for high-speed train wheelsets, such as Figure 1 As shown, it includes: a cleaning head (1) and a rod (2). The cleaning head (1) and the rod (2) are detachably connected. The cleaning head (1) includes a cleaning head body (11). The cleaning head body (11) is connected to the rod (2). An aluminum alloy spacer (12), a nylon pressure plate (13) and a nylon external hexagonal bolt (14) are sequentially fitted on the cleaning head body (11) from the end near the rod to the end away from the rod. A first silicone scraper assembly (15) is fitted on the aluminum alloy spacer (12).

[0038] The silicone scraper of the first silicone scraper assembly (15) is made of silicone. The silicone material itself has good flexibility and sealing properties, which allows the first silicone scraper assembly (15) to fit tightly against the inner wall of the hollow shaft of the train wheelset. During the cleaning operation, when the first silicone scraper assembly (15) enters or exits the hollow shaft of the EMU wheelset, the first silicone scraper assembly (15) moves against the inner wall of the hollow shaft of the EMU wheelset, which can generate a directional pressure difference inside the hollow shaft of the EMU wheelset to form a piston effect. Through the pushing force of the "piston", following the fluid dynamics and oil adhesion characteristics inside the hollow shaft of the EMU wheelset, the mixed dirt of residual coupling oil, vaporized rust-preventive oil and metal debris is accurately and efficiently squeezed out from the hollow shaft of the EMU wheelset, eliminating residual hidden dangers, improving the cleaning effect, shortening the cleaning time, greatly improving the cleaning efficiency, and breaking the manufacturer's monopoly. The cleaning head (1) can be replaced separately. The cleaning head (1) has a low cost, saving the overall replacement cost and reducing the operation and maintenance cost. In actual operation, the first silicone scraper assembly (15), which moves against the inner wall of the hollow shaft of the EMU wheelset, acts like a precise "cleaner," systematically pushing away oil and impurities along the axial direction of the hollow shaft, greatly improving cleaning efficiency and quickly and effectively treating mixed contaminants attached to the shaft wall. Furthermore, using the first silicone scraper assembly (15) as the cleaning component eliminates the need for cleaning paper, reducing reliance on it, simplifying procedures, compressing material costs, and lowering maintenance costs. Overall, its application in the railway system has broad prospects, saving millions of yuan annually.

[0039] The nylon pressure plate (13) is used to define the position of the aluminum alloy spacer and the first silicone scraper assembly, and to isolate the first silicone scraper assembly (15) from the nylon external hex bolt (14) to prevent the first silicone scraper assembly (15) from directly contacting the first silicone scraper assembly (15) and causing damage to the first silicone scraper assembly (15).

[0040] In some embodiments, a second silicone scraper assembly (16) is also fitted on the aluminum alloy sleeve (12), and the first silicone scraper assembly (15) and the second silicone scraper assembly (16) are arranged opposite to each other.

[0041] During the cleaning operation of the hollow shaft cleaner for EMU wheelsets, when the cleaning head (1) enters and exits the hollow shaft of the EMU wheelsets, it performs two cleaning operations on the inside of the hollow shaft of the EMU wheelsets through the first silicone scraper assembly (15) and the second silicone scraper assembly (16), further removing dirt that may have been missed after the first cleaning. In this way, one cleaning operation achieves two comprehensive cleaning processes, which greatly improves the overall quality of cleaning the inside of the hollow shaft of the EMU wheelsets.

[0042] In some embodiments, an absorbent sponge (17) is also fitted on the aluminum alloy sleeve (12), and the absorbent sponge (17) is disposed between the first silicone scraper assembly (15) and the second silicone scraper assembly (16).

[0043] The absorbent sponge (17) has a loose and porous structure, and its numerous tiny pores give it a strong adsorption capacity. For the mixture of residual coupling oil, vaporized rust-preventive oil and metal debris inside the hollow shaft of the EMU wheelset, the absorbent sponge (17) can adsorb these dirtes into its own pores through physical adsorption. During the cleaning operation, when the absorbent sponge (17) moves along the hollow shaft of the EMU wheelset, the absorbent sponge (17) makes full contact with the inner wall of the hollow shaft of the EMU wheelset, just like a series of tiny "sludge suction stations", actively capturing the oil and debris left behind by the first silicone scraper assembly (15) or the second silicone scraper assembly (16) after cleaning. Even some very fine metal shavings are hard to escape, further improving the fineness of the cleaning inside the hollow shaft of the EMU wheelset and ensuring a more thorough cleaning effect.

[0044] By placing an adsorbent sponge (17) between the first silicone scraper assembly (15) and the second silicone scraper assembly (16), and with the first and second silicone scraper assemblies having opposite silicone scraper directions, the multi-layer reciprocating design meets the cleaning requirements of the narrow and enclosed space of the hollow shaft of the EMU wheelset, achieving double the cleaning efficiency and ensuring that the hollow shaft of the EMU wheelset is flawlessly clean. Its excellent cleaning power sweeps away impurities, far exceeding the previous cleaning level, and meets the stringent standards of advanced maintenance. When the hollow axle cleaner for EMU wheelsets enters the hollow axle of the EMU wheelset, the first silicone scraper assembly (15) and the adsorption sponge (17) take the lead in cleaning the inner wall of the hollow axle for the first time. The first silicone scraper assembly (15) scrapes off the thicker layer of oil and some large metal debris on the inner wall of the hollow axle of the EMU wheelset, while the adsorption sponge (17) adsorbs relatively small impurities and oil. When the hollow axle cleaner for EMU wheelsets exits the hollow axle of the EMU wheelset, the second silicone scraper assembly (16) and the adsorption sponge (17) perform a second cleaning of the inner wall of the hollow axle of the EMU wheelset, further removing any pollutants that may have been missed after the first cleaning. In this way, two comprehensive and meticulous cleaning processes are achieved, which greatly improves the overall quality of the cleaning inside the hollow axle of the EMU wheelset, enabling the inside of the hollow axle of the EMU wheelset to reach a higher cleaning standard, meeting the strict requirements for the cleanliness of the hollow axle of the EMU wheelset for safe and stable operation, and greatly improving the cleaning efficiency. While improving cleaning effectiveness, it significantly reduces the number of cleaning operations, thereby greatly reducing the workload and intensity of the workers.

[0045] In some embodiments, adjacent silicone scrapers in the first silicone scraper assembly and the second silicone scraper assembly are provided with aluminum alloy spacers (18).

[0046] In some embodiments, such as Figure 2 and Figure 3 As shown, the connecting end of the rod is provided with a slot (21), and the connecting end of the cleaning head is provided with a plug (19). One end of the plug is inserted into the slot and connected to the rod (2), and the other end of the plug is connected to the cleaning head body (11).

[0047] The plug (19) can be a T-shaped structure. The smaller end of the plug is inserted into the slot (21) and connected to the rod (2). The larger end of the plug is connected to the cleaning head body (11) and used to define the position of the second silicone scraper assembly.

[0048] The cleaning head is detachably connected to the rod body through the plug (19) and the slot (21), replacing the traditional bolt connection. This not only enables quick installation and disassembly, effectively saving installation and disassembly time, but also avoids the safety hazards caused by loose bolts falling into the hollow shaft of the train wheelset, significantly improving the safety factor.

[0049] In some embodiments, such as Figure 2 and Figure 3 As shown, the slot is provided with a snap-fit ​​hole (22), and the plug part is provided with a snap-fit ​​groove (191) that matches the snap-fit ​​hole. A spring (192) is provided in the snap-fit ​​groove (191). One end of the spring is fixedly connected to the bottom of the snap-fit ​​groove, and the other end of the spring is provided with a snap-fit ​​part (193). The snap-fit ​​part (193) extends out of the snap-fit ​​hole (22).

[0050] In some embodiments, the plug (19) is a nylon mandrel.

[0051] In some embodiments, the rod (2) is a titanium alloy tube.

[0052] The rod body (2) is made of titanium alloy tube and is refined according to the characteristics of hollow shaft of EMU wheelset and working environment. It breaks through the limitations of traditional materials and can greatly reduce the operating burden of operators by utilizing the lightweight characteristics of titanium alloy tube.

[0053] In some embodiments, a rubber handle (23) is provided on the rod body away from the cleaning head end.

[0054] In some embodiments, the length of the hollow axle cleaner for train wheelsets is greater than the length of the hollow axle for train wheelsets.

[0055] By using a wheel set hollow shaft cleaner that is longer than the wheel set hollow shaft, the risk of bolts loosening and falling off is avoided, and the safety hazard of the wheel set hollow shaft cleaner being left inside the wheel set hollow shaft is eliminated.

[0056] The aforementioned hollow axle cleaners for EMU wheelsets are durable and reliable, showing no signs of fatigue even after high-frequency use. They are easy to maintain, effectively supporting intensive maintenance schedules and ensuring the timely and high-quality commissioning of EMUs. In the long run, the hollow axle cleaners for EMU wheelsets are a key piece of the puzzle in EMU maintenance technology innovation. They not only pave the way for processes such as flaw detection of hollow axles for EMU wheelsets, but also contribute to the advancement of overall operation and maintenance efficiency, providing a model for overcoming similar challenges in the industry and promoting the iteration of cleaning technologies for industry equipment. Furthermore, they can be continuously upgraded based on new model types and technologies, expanding functions and adapting to diverse scenarios, leading a new chapter in the high-quality and intelligent development of EMU maintenance, and continuously empowering railway traffic safety and efficient operation.

[0057] Example 2

[0058] A specific embodiment of a novel hollow axle cleaner for high-speed train wheelsets, such as... Figure 1 As shown, it includes: a cleaning head (1) and a rod (2). The cleaning head (1) includes a cleaning head body (11). An aluminum alloy spacer (12), a nylon pressure plate (13), and a nylon hexagonal bolt (14) are sequentially fitted on the cleaning head body (11) from the end near the rod to the end away from the rod. A second silicone scraper assembly (16), an absorbent sponge (17), and a first silicone scraper assembly (15) are sequentially fitted on the aluminum alloy spacer (12) from the end near the rod to the end away from the rod. The first silicone scraper assembly (15) and the second silicone scraper assembly (16) are arranged opposite to each other. A slot (21) is provided at the connecting end of the rod. A plug-in part (19) is provided at the connecting end of the cleaning head. It has a T-shaped structure. The smaller end of the plug is inserted into the slot (21) and connected to the rod (2). The larger end of the plug is connected to the cleaning head body (11), the aluminum alloy spacer (12), and the second silicone scraper assembly (16). The slot is provided with a snap-fit ​​hole (22). The plug is provided with a snap-fit ​​groove (191) that matches the snap-fit ​​hole. A spring (192) is provided in the snap-fit ​​groove (191). One end of the spring is fixedly connected to the bottom of the snap-fit ​​groove. The other end of the spring is provided with a snap-fit ​​part (193). The snap-fit ​​part (193) extends out of the snap-fit ​​hole (22). The plug (19) is a nylon spindle. The rod (2) is a titanium alloy tube. A rubber handle (23) is provided at the end of the rod away from the cleaning head.

[0059] Among them, the length of the hollow shaft cleaner for the EMU wheelset is 3000mm, which is greater than the length of the hollow shaft for the EMU wheelset; the length of the rubber handle (23) is 100mm, the length of the snap-fit ​​part (193) is 5mm, the length of the connection surface between the larger end of the plug and the smaller end of the plug to the contact surface between the nylon pressure plate (13) and the nylon external hexagonal bolt (14) is 66mm, the length of the aluminum alloy spacer (12) is 48mm, the diameter of the aluminum alloy spacer (12) is 24mm, the diameter of the cleaning head body (11) is 18mm, the nylon external hexagonal bolt (14) is M8, the diameter of the nylon pressure plate (13) is 28mm, and the diameter of the cleaning head (1) is 30mm.

[0060] The new hollow wheelset axle cleaner for high-speed trains has been officially put into use at the Chengdu High-Speed ​​Train Depot. It is being maintained and operated according to standardized tooling management procedures to ensure its long-term stable service in cleaning the hollow wheelsets of high-speed trains. After cleaning the hollow wheelsets with this cleaner, the cleaning effect was visually and effectively verified using a high-intensity flashlight. The test results showed that the cleaner thoroughly cleaned the inside of the hollow wheelsets, fully meeting the standards for advanced maintenance operations, providing strong evidence of its cleaning capabilities. In previous maintenance operations, traditional hollow wheelset axle cleaners required additional tools such as special cleaning paper for further wiping and checking of cleanliness. This new cleaner eliminates the need for cleaning paper, directly cleaning the wheelsets, simplifying the operation process, saving material costs, and improving overall efficiency. It is believed that as the hollow shaft cleaner for the trainset wheelsets continues to be used on-site, more practical data and experience will be accumulated, providing strong support for possible optimization and improvement, making its performance more perfect, and better assisting in the efficient and high-quality maintenance of the trainset.

Claims

1. A new type of EMU wheel set hollow axle cleaner, characterized in that, include: The cleaning head and the rod are detachably connected. The cleaning head includes a cleaning head body, which is connected to the rod. An aluminum alloy spacer, a nylon pressure plate, and a nylon hexagonal bolt are sequentially fitted on the cleaning head body from the end near the rod to the end away from the rod. A first silicone scraper assembly is fitted on the aluminum alloy spacer.

2. A new type of EMU wheel set hollow axle cleaner according to claim 1, characterized in that: The aluminum alloy spacer is also fitted with a second silicone scraper assembly, with the first silicone scraper assembly and the second silicone scraper assembly arranged opposite to each other.

3. A novel hollow axle cleaner for EMU wheelsets according to claim 2, characterized in that: An absorbent sponge is also fitted onto the aluminum alloy sleeve, and the absorbent sponge is positioned between the first silicone scraper assembly and the second silicone scraper assembly.

4. A new type of EMU wheel set hollow axle cleaner according to claim 1, 2 or 3, characterized in that: Both adjacent silicone scrapers in the first and second silicone scraper assemblies are provided with aluminum alloy spacers.

5. A new type of EMU wheel set hollow axle cleaner according to claim 1, characterized in that: The connecting end of the rod is provided with a slot, and the connecting end of the cleaning head is provided with a plug-in part. One end of the plug-in part is inserted into the slot and connected to the rod, and the other end of the plug-in part is connected to the cleaning head body.

6. A new type of EMU wheel set hollow axle cleaner according to claim 5, characterized in that: The slot is provided with a snap-fit ​​hole, and the plug part is provided with a snap-fit ​​groove that matches the snap-fit ​​hole. A spring is provided in the snap-fit ​​groove. One end of the spring is fixedly connected to the bottom of the snap-fit ​​groove, and the other end of the spring is provided with a snap-fit ​​part that extends out of the snap-fit ​​hole.

7. A new type of EMU wheel set hollow axle cleaner according to claim 5 or 6, characterized in that: The connector is a nylon mandrel.

8. A novel hollow axle cleaner for EMU wheelsets according to claim 1, characterized in that: The rod is a titanium alloy tube.

9. A new type of EMU wheel set hollow axle cleaner according to claim 1, characterized in that: A rubber handle is provided at the end of the rod away from the cleaning head.

10. A new type of EMU wheel set hollow axle cleaner according to claim 1, characterized in that: The length of the hollow axle cleaner for EMU wheelsets is greater than the length of the hollow axle of the EMU wheelsets.

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