Axles, wheelsets and rail vehicles

Abstract

This invention relates to the field of rail vehicles, providing an axle, wheelset, and rail vehicle. The axle includes an axle body with a mounting base located near the inner side of the wheelset; and a fork arm with a single-arm end and a double-arm end connected to the single-arm end. The single-arm end is connected to the mounting base, and the double-arm end is used to connect to the frame. This axle achieves an efficient and stable connection between the axle and the frame, while optimizing the overall structure and performance of the vehicle. By providing a mounting base near the inner side of the wheelset on the axle body and designing the fork arm to connect to the mounting base with a single-arm end, while the double-arm end is used to connect to the frame, this structure significantly enhances the connection strength between the axle and the frame. This design eliminates the need for an axle box, thereby simplifying the installation steps of the axle, wheelset, and frame. It reduces unnecessary space occupation, making the vehicle design more compact and efficient, while also contributing to improved vehicle load capacity and operating efficiency.

Description

Technical Field

[0001] This invention relates to the field of rail vehicles, and provides an axle, wheelset, and rail vehicle. Background Technology

[0002] Traditional wheelset structures typically use axle bearings to transfer the weight of the wheels and most of the power to the ground. While bearing the wheels, the axle also needs to guide the wheelset, ensuring smooth vehicle movement and controlled trajectory. However, traditional axle bearing structures have certain limitations: firstly, they are relatively large, occupying some of the vehicle's interior space and reducing overall space utilization; secondly, their relative weight increases the vehicle's total mass, impairing driving performance. Summary of the Invention

[0003] This invention provides an axle to address the shortcomings of large size and heavy weight of axles in related technologies, thereby simplifying the axle structure and achieving a lightweight design.

[0004] A second aspect of the present invention also provides a wheelset.

[0005] A third aspect of the present invention also provides a rail vehicle.

[0006] A first aspect of the present invention provides an axle, comprising:

[0007] Axle body, wherein a mounting seat is provided on the axle body near the inner side of the wheelset;

[0008] The fork arm includes a single-arm end and a double-arm end connected to the single-arm end. The single-arm end is connected to the mounting base, and the double-arm end is used to connect to the frame.

[0009] According to one embodiment of the present invention, the mounting base is provided with a cover, and an installation space is formed between the mounting base and the cover. The single arm end is inserted into the installation space and is clearance-fitted with the installation space.

[0010] According to one embodiment of the present invention, a first mounting hole is provided at the end of the single arm, and a first connecting shaft is inserted through the first mounting hole, the first connecting shaft being rotatably connected to the mounting space.

[0011] According to one embodiment of the present invention, the two arms are provided with a second mounting hole, and a second connecting shaft is inserted through the second mounting hole. The two arms are adapted to be connected to the frame through the second connecting shaft.

[0012] According to one embodiment of the present invention, a limiting stage is provided on the second connecting shaft, and the double arm end is adapted to be laterally positioned relative to the frame by the limiting stage;

[0013] and / or

[0014] The second connecting shaft is adapted to be positioned relative to the second mounting hole by means of the limiting platform.

[0015] According to one embodiment of the present invention, a shoulder is provided on the axle body near the inner side of the wheelset, the shoulder being adapted to press the cover of the wheelset against the wheelset and to construct a sealing structure between the cover and the wheelset.

[0016] According to one embodiment of the present invention, a bushing is fitted on the axle body, and a connecting seat is provided on the bushing. The connecting seat is stepped, and the bushing is connected to the motor through the connecting seat. The motor is adapted to achieve lateral positioning with the bushing through the connecting seat.

[0017] A second aspect of the present invention provides a wheelset including a wheel and the aforementioned axle, wherein the wheel is connected to both ends of the axle.

[0018] A third aspect of the present invention provides a rail vehicle, including a frame and the aforementioned axle;

[0019] Or it may include the frame and the aforementioned wheels.

[0020] According to one embodiment of the present invention, a support base is provided on the frame, and a suspension positioning platform is provided on the support base.

[0021] According to the first aspect of the present invention, the axle provides an efficient and stable connection between the axle and the frame, while optimizing the overall structure and performance of the vehicle. By providing a mounting base on the axle body near the inner side of the wheelset, and designing a fork arm with one arm connected to the mounting base and the other arm connected to the frame, this structure significantly enhances the connection strength between the axle and the frame. The double-arm design of the fork arm provides a larger load-bearing area and better stress dispersion, thereby improving the stability and safety of the vehicle during operation. More importantly, this design eliminates the need for axle housing in related technologies, thus simplifying the installation steps of the axle, wheelset, and frame. By placing the mounting base on the axle body near the inner side of the wheelset, not only is the space resource of the axle fully utilized, but the overall layout of the vehicle is also optimized. This design reduces unnecessary space occupation, making the vehicle design more compact and efficient, while also contributing to improved load capacity and operating efficiency. The modular design of the fork arm makes the installation process simpler and faster, reducing installation difficulty and cost. Simultaneously, when maintenance or component replacement is required, the fork arm can be quickly disassembled and replaced, improving maintenance efficiency and convenience. By enhancing the connection between the axle and the frame, the axle design of the present invention helps improve the overall performance of the vehicle, making the vehicle more stable during operation, reducing vibration and noise, and improving passenger comfort and driving smoothness. Therefore, the axle design provided in the first aspect of the present invention exhibits significant technical effects in enhancing structural stability, optimizing spatial layout, simplifying installation and maintenance, improving vehicle performance, and enhancing adaptability. In particular, the omission of the axle box significantly distinguishes it from the axle-wheelset and axle-frame installation structures in related technologies.

[0022] According to the second aspect of the present invention, the wheelset provided exhibits significantly improved overall performance due to the optimized axle design described above. The mounting base and fork arm structure on the axle not only enhance the connection strength between the axle and the frame but also improve the stability and safety of the wheelset under high-speed operation. This stable connection allows the wheels to more accurately follow the vehicle's trajectory, reducing energy loss due to vibration and swaying, and improving driving efficiency. Through the robust connection between the axle body and the fork arm, the wheelset can bear greater weight and load. This high load-bearing capacity ensures stable vehicle operation under various working conditions and extends service life. The modular design of the wheelset makes the installation process simpler and faster. The wheels can be directly connected to both ends of the axle without complex adjustments or alignment work. Similarly, when maintenance or component replacement is required, the wheels or axle assembly can be easily disassembled and replaced, reducing maintenance costs and downtime. The elimination of the axle box significantly improves the efficiency of wheelset assembly. Therefore, the wheelset provided in the second aspect of the present invention, by combining an optimized axle design and wheel connection method, achieves improved overall performance, enhanced load-bearing capacity, simplified installation and maintenance, improved dynamic balance, and wide applicability.

[0023] According to the third aspect of the present invention, the rail vehicle significantly improves the overall performance and operating efficiency of the vehicle by integrating the aforementioned axle or wheelset. Whether using the optimized axle or the wheelset incorporating it, the operational stability of the rail vehicle is greatly enhanced. The structural design of the mounting base, fork arm structure, etc., on the axle ensures a stable connection between the wheelset and the frame, reducing instability caused by vibration and swaying, making the vehicle more stable when running at high speeds or navigating curves. The optimized design of the axle and wheelset not only improves operational stability but also significantly enhances the safety performance of the rail vehicle. The robust connection structure and high-quality manufacturing materials can withstand greater loads and impacts, reducing the risk of safety accidents due to component failure. The axle or wheelset with the above-mentioned design helps optimize the overall spatial layout of the rail vehicle. The compact structural design reduces unnecessary space occupation, making the interior space of the vehicle more spacious and improving passenger comfort. At the same time, the optimized layout also helps improve the vehicle's load capacity and operating efficiency. Due to the reduced vibration and noise caused by the optimized design of the axle or wheelset, the ride comfort of the rail vehicle is significantly improved. Passengers can enjoy a smoother and quieter ride, enhancing their travel experience. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic top view of the frame and wheelset connection provided by the present invention.

[0026] Figure 2 This is a schematic perspective view of the frame and wheelset connection provided by the present invention.

[0027] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0028] Figure 4 This is a schematic perspective view of the fork arm provided by the present invention.

[0029] Figure 5 This is a schematic cross-sectional view of the connection between the axle and wheelset provided by the present invention.

[0030] Figure label:

[0031] 100. Axle body; 102. Wheelset; 104. Mounting seat; 106. Fork arm; 108. Single arm end; 110. Double arm end; 112. Cover; 114. First connecting shaft; 116. Second connecting shaft; 118. Limiting platform; 120. Axle shoulder; 122. Sealing structure; 124. Bushing; 126. Connecting seat; 128. Motor; 130. Support seat; 132. Primary suspension positioning platform; 134. Frame. Detailed Implementation

[0032] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0033] like Figures 1 to 5 As shown, a first aspect of the present invention provides an axle, comprising:

[0034] The axle body 100 has a mounting seat 104 located on the axle body 100 near the inner side of the wheelset 102;

[0035] The fork arm 106 includes a single arm end 108 and a double arm end 110 connected to the single arm end 108. The single arm end 108 is connected to the mounting base 104, and the double arm end 110 is used to connect to the frame 134.

[0036] According to the first aspect of the present invention, the axle provides an efficient and stable connection between the axle and the frame 134, while optimizing the overall structure and performance of the vehicle. By providing a mounting base 104 on the axle body 100 near the inner side of the wheelset 102, and designing a fork arm 106 with a single-arm end 108 connected to the mounting base 104 and a double-arm end 110 used to connect to the frame 134, this structure significantly enhances the connection strength between the axle and the frame 134. The double-arm design of the fork arm 106 provides a larger load-bearing area and better stress dispersion capability, thereby improving the stability and safety of the vehicle during operation. More importantly, this arrangement eliminates the need for axle housing in related technologies, thus simplifying the installation steps of the axle, wheelset 102, and frame 134. By placing the mounting base 104 on the axle body 100 near the inner side of the wheelset 102, not only is the space resource of the axle fully utilized, but the overall layout of the vehicle is also optimized. This design reduces unnecessary space occupation, making the vehicle design more compact and efficient, while also helping to improve the vehicle's load capacity and operating efficiency. The modular design of the fork arm 106 makes the installation process simpler and faster, reducing installation difficulty and cost. At the same time, when maintenance or component replacement is required, the fork arm 106 can be quickly disassembled and replaced, improving maintenance efficiency and convenience. By strengthening the connection between the axle and the frame 134, the axle design of the present invention helps to improve the overall performance of the vehicle, making the vehicle more stable during operation, reducing vibration and noise, and improving passenger comfort and driving smoothness. Thus, the axle design provided by the first aspect embodiment of the present invention exhibits significant technical effects in terms of enhancing structural stability, optimizing spatial layout, simplifying installation and maintenance, improving vehicle performance, and enhancing adaptability. In particular, the omission of the axle box setting is significantly different from the installation structure of the axle and wheelset 102 and the axle and frame 134 in related technologies.

[0037] Please continue reading Figures 1 to 5 The axle proposed in the first aspect of the present invention mainly includes two core parts: the axle body 100 and the fork arm 106.

[0038] The axle body 100, as the main structure of the axle, bears the important tasks of the rotational motion of the wheels and the transmission of the vehicle's weight. A mounting base 104 is specially provided on the axle body 100, near the inner side of the wheelset 102. The design of the mounting base 104 takes into account structural strength and ease of connection, providing a stable foundation for fixing the fork arm 106.

[0039] The fork arm 106 is one of the key innovations of this invention. It consists of a single-arm end 108 and a double-arm end 110. The single-arm end 108 is directly connected to the mounting base 104 on the axle body 100, secured by bolts or other reliable connection methods. The double-arm end 110 extends outwards, forming two branches for connection to the rail vehicle frame 134. This design not only enhances the connection strength between the axle and the frame 134 but also reduces stress concentration through the dispersing effect of the two arms, improving the overall structural stability and durability.

[0040] It is understood that the axle provided in this embodiment of the invention connects the axle body 100 to the frame 134 via the fork arm 106, eliminating the need for a traditional axle box, thus enabling lightweight design of the axle and rail vehicle. Simultaneously, eliminating the axle box improves the assembly efficiency of the rail vehicle, saves space at the axle and wheelset 102 positions, and facilitates space optimization.

[0041] Thus, through the ingenious design of the mounting base 104 and the fork arm 106, the connection between the axle and the frame 134 is more robust and reliable. The double-arm structure of the fork arm 106 provides a larger load-bearing area and better stress dispersion, effectively reducing stress concentration caused by vibration and impact, thereby improving the overall stability and safety of the vehicle. The mounting base 104 is located on the axle body 100 near the inner side of the wheelset 102, making full use of the axle's space resources. This layout not only reduces unnecessary space occupation but also helps optimize the overall structure of the vehicle, making the vehicle design more compact and efficient. The modular design of the fork arm 106 makes the installation process simpler and faster. At the same time, when maintenance or component replacement is required, the fork arm 106 or related components can be easily disassembled and replaced, reducing maintenance costs and downtime. Due to the significantly enhanced connection between the axle and the frame 134, the stability and smoothness of the vehicle during operation are improved. This helps reduce vibration and noise, improving passenger comfort and driving smoothness. Simultaneously, the robust connection also helps improve the vehicle's load capacity and operating efficiency.

[0042] According to one embodiment of the present invention, a cover 112 is provided on the mounting base 104, and an installation space is formed between the mounting base 104 and the cover 112. The single arm end 108 is inserted into the installation space and is fitted with the installation space with a clearance.

[0043] See Figure 1 and Figure 2 According to one embodiment of the present invention, the design of the axle has been further optimized, specifically in the connection method between the mounting base 104 and the single arm end 108 of the fork arm 106.

[0044] In this embodiment, a cover 112 is specially provided on the mounting base 104. The cover 112 and the mounting base 104 fit tightly together to form a semi-enclosed mounting space. The mounting space provides a precise insertion position for the single arm end 108 of the fork arm 106, ensuring the accuracy and stability of the connection.

[0045] The single-arm end 108 of the fork arm 106 is designed to be inserted into the aforementioned mounting space while maintaining a certain gap between it and the mounting space. This gap fit design allows the single-arm end 108 a certain degree of freedom within the mounting space to cope with minor deformations and vibrations during vehicle operation, thereby improving the reliability and durability of the connection.

[0046] The combination of the cover 112 and the mounting base 104 forms a stable mounting frame, providing solid support for the single arm end 108 of the fork arm 106. Simultaneously, the clearance fit between the single arm end 108 and the mounting space avoids stress concentration between them, reducing the safety hazard of the fork arm 106 detaching due to connection fatigue. The design of the cover 112 simplifies the installation process of the single arm end 108 of the fork arm 106. Operators only need to accurately insert the single arm end 108 into the mounting space and secure it with the cover 112, eliminating the need for complex adjustments or alignment, thus improving assembly efficiency. When maintenance or replacement of the fork arm 106 is required, the single arm end 108 can be easily removed simply by opening the cover 112, without disassembling other components. This design reduces maintenance difficulty and cost, and improves maintenance efficiency. By adjusting the design parameters of the cover 112 and the mounting base 104, different specifications and models of the single arm end 108 of the fork arm 106 can be accommodated. This flexibility allows the axle of the present invention to be widely used in different types of vehicles and different operating environments. Because the connection between the mounting base 104 and the fork arm 106 is more robust and reliable, the stability and smoothness of the vehicle during operation are further improved. This helps reduce vibration and noise, improve passenger comfort and driving smoothness, and also helps extend the service life of the vehicle.

[0047] According to one embodiment of the present invention, a first mounting hole is provided at the single arm end 108, and a first connecting shaft 114 is inserted through the first mounting hole, and the first connecting shaft 114 is rotatably connected to the mounting space.

[0048] See Figure 4 According to one embodiment of the present invention, the connection between the axle and the fork arm 106 is designed more precisely, especially the structure of the first connecting shaft 114 is introduced in the connection between the single arm end 108 and the mounting space.

[0049] A first mounting hole is provided on the single arm end 108 of the fork arm 106, and the position and size of the first mounting hole are ensured to match the first connecting shaft 114 in the installation space.

[0050] The first connecting shaft 114 is designed to pass through the first mounting hole and rotatably connect within the mounting space. This means that the first connecting shaft 114 not only serves to fix the single arm end 108, but also allows the single arm end 108 a certain degree of rotational freedom within the mounting space. This design helps to absorb minor vibrations and deformations during vehicle operation, improving the reliability and durability of the connection.

[0051] The first connecting shaft 114, passing through the first mounting hole and rotatably connected to the mounting space, provides more stable support for the single arm end 108. This connection method reduces safety hazards caused by loosening or detachment, improving vehicle operation safety. The rotatable connection design of the first connecting shaft 114 allows the single arm end 108 a certain degree of rotational freedom within the mounting space. This flexibility helps to cope with various complex operating conditions during vehicle operation, such as cornering and uneven road surfaces, thereby improving the vehicle's adaptability and stability. Since the single arm end 108 is rotatably connected to the mounting space via the first connecting shaft 114, this design can more effectively absorb and disperse vibration energy during vehicle operation. This helps to reduce vibration damage to the vehicle structure and components, extending the vehicle's service life. When maintenance or replacement of the fork arm 106 is required, the single arm end 108 can be easily removed simply by disassembling the first connecting shaft 114. This design simplifies the maintenance process and reduces maintenance difficulty and cost. By introducing the design of the first connecting shaft 114, the connection between the axle and the fork arm 106 is more stable and flexible. This optimization not only improves vehicle stability and smoothness, but also helps to enhance vehicle handling and ride comfort.

[0052] According to one embodiment of the present invention, the double arm end 110 is provided with a second mounting hole, and a second connecting shaft 116 is provided through the second mounting hole. The double arm end 110 is adapted to be connected to the frame 134 through the second connecting shaft 116.

[0053] See Figure 4 According to one embodiment of the present invention, the connection between the double-arm end 110 of the fork arm 106 and the vehicle frame 134 is specifically designed, and a structure of a second connecting shaft 116 is introduced.

[0054] Second mounting holes are respectively opened on the double arm ends 110 of the fork arm 106. The position and size of the second mounting holes are ensured to match the second connecting shaft 116 and to be able to dock with the corresponding components on the vehicle frame 134.

[0055] The second connecting shaft 116 passes through the second mounting hole and serves as a connection medium between the double arm end 110 and the frame 134. Through the second connecting shaft 116, the double arm end 110 can be securely connected to the frame 134, ensuring a tight connection between the axle and the overall vehicle structure.

[0056] The second connecting shaft 116, passing through the second mounting hole and connected to the frame 134, provides strong support for the double-arm end 110. This connection method significantly enhances the stability of the connection between the fork arm 106 and the frame 134, reducing safety hazards caused by loosening or detachment. The design of the second connecting shaft 116 takes into account various operating conditions and stress changes during vehicle operation, and can be made of high-strength, high-wear-resistant materials, thus ensuring stable performance during long-term use and improving connection reliability. The design of the second connecting shaft 116 makes the connection between the double-arm end 110 and the frame 134 more compact and rational. This layout not only reduces unnecessary space occupation but also helps optimize the overall vehicle structure and improve operating efficiency. The design of the second connecting shaft 116 makes the installation process between the double-arm end 110 and the frame 134 simpler and faster. At the same time, when maintenance or component replacement is required, the second connecting shaft 116 and related components can be easily disassembled and replaced, reducing maintenance costs and downtime. Because the connection between the fork arm 106 and the frame 134 has been further optimized and enhanced, the stability and ride comfort of the vehicle during operation have been significantly improved. This helps reduce vibration and noise, improve passenger comfort and driving smoothness, and also helps extend the service life of the vehicle.

[0057] According to one embodiment of the present invention, a limiting stage 118 is provided on the second connecting shaft 116, and the double arm end 110 is adapted to be laterally positioned relative to the frame 134 by the limiting stage 118; and / or the second connecting shaft 116 is adapted to be relative to the second mounting hole by the limiting stage 118.

[0058] See Figure 4 According to one embodiment of the present invention, the design of the second connecting shaft 116 is further refined, and a limiting platform 118 is provided on the second connecting shaft 116. The design of the limiting platform 118 not only enhances the connection stability between the double arm ends 110 of the fork arm 106 and the vehicle frame 134, but also improves the accuracy and reliability of the connection.

[0059] See also Figure 4 A limiting stage 118 is provided on the second connecting shaft 116. The limiting stage 118 can be an annular structure protruding from the surface of the connecting shaft, or it can be other shapes, as long as it can achieve the required limiting function.

[0060] One of the main functions of the limiting platform 118 is to limit the lateral positioning between the double arm ends 110 and the frame 134. When the double arm ends 110 are connected to the frame 134 via the second connecting shaft 116, the limiting platform 118 can prevent the double arm ends 110 from moving or shifting too much in the lateral direction, thereby ensuring the stability and accuracy of the connection.

[0061] In addition to defining the lateral positioning of the double arm ends 110 and the frame 134, the limiting platform 118 can also be used to define the relative position between the second connecting shaft 116 and the second mounting hole. By precisely controlling the position and size of the limiting platform 118, it can be ensured that the second connecting shaft 116 can remain in the correct position after being inserted into the second mounting hole, avoiding displacement, tilting or falling off during the connection process.

[0062] The design of the limiting platform 118 effectively prevents the lateral movement or offset of the double arm ends 110, thereby enhancing the stability of the connection between the fork arm 106 and the frame 134. This stability is crucial for the stability and safety of the vehicle during operation. By limiting the relative position between the second connecting shaft 116 and the second mounting hole through the limiting platform 118, the precision and accuracy of the connection can be ensured. This helps reduce problems such as vibration and noise caused by improper connection, improving the overall performance of the vehicle. The design of the limiting platform 118 makes the installation process simpler and faster. The operator only needs to insert the second connecting shaft 116 into the second mounting hole and ensure that the limiting platform 118 contacts the corresponding component on the double arm ends 110 or the frame 134 to achieve a stable connection, without the need for complex adjustments or calibrations. Since the limiting platform 118 improves the stability and precision of the connection and reduces the risk of failure and damage caused by improper connection, it helps to reduce the maintenance costs of the vehicle. At the same time, when maintenance or replacement of parts is required, the design of the limiting platform 118 also helps to simplify the maintenance process and improve maintenance efficiency.

[0063] In summary, the design of the limiting platform 118 not only enhances the stability and precision of the connection between the fork arm 106 and the frame 134, but also helps improve the overall performance of the vehicle. This includes better stability, smoothness, noise control, and a longer service life.

[0064] According to one embodiment of the present invention, a shoulder 120 is provided on the axle body 100 near the inner side of the wheelset 102. The shoulder 120 is adapted to press the cover of the wheelset 102 against the wheelset 102 and to construct a sealing structure 122 between the cover and the wheelset 102.

[0065] See Figure 5According to one embodiment of the present invention, an innovation has been made in the design of the axle body 100, particularly by adding an axle shoulder 120 near the inner side of the wheelset 102. The design of the axle shoulder 120 not only optimizes the connection structure between the axle and the wheelset 102, but also improves the sealing performance inside the wheelset 102, which is of great significance for improving the overall performance and safety of the vehicle.

[0066] Specifically, the shoulder 120 is an annular structure protruding from the surface of the axle body 100, and its shape and size ensure a tight fit with the wheelset 102 and the cover of the axle body 100.

[0067] One of the main functions of the shoulder 120 is to press the cover of the wheelset 102 onto the wheelset 102. When the axle is assembled with the wheelset 102, the shoulder 120 will abut against the outside of the cover and apply a certain pressure to the cover through its protruding structure, so that it fits tightly against the inner surface of the wheelset 102.

[0068] Between the cover and the wheelset 102, a relatively enclosed space is formed due to the pressing action of the axle shoulder 120. Within this space, a sealing structure 122, such as a labyrinth seal or multiple annular sealing rings, can be further installed to enhance the sealing performance inside the wheelset 102. The sealing structure 122 effectively prevents external impurities and moisture from entering the wheelset 102, protecting critical components such as bearings and gears inside the wheelset 102 from damage.

[0069] The fit between the axle shoulder 120 and the cover, along with the sealing structure 122, significantly improves the sealing performance inside the wheelset 102. This helps reduce the erosion and damage to the internal components of the wheelset 102 caused by external factors, extends the service life of the components, and improves the overall performance of the vehicle. The clamping action of the axle shoulder 120 not only enhances the connection stability between the cover and the wheelset 102 but also improves the overall connection strength between the axle and the wheelset 102 by transmitting force to the entire axle system. This stability is crucial for the stability and safety of the vehicle during operation. The presence of the axle shoulder 120 and the sealing structure 122 provides better protection for the internal components of the wheelset 102. When maintenance or component replacement is required, it can be performed simply by opening the cover, without disassembling the entire axle, thus reducing maintenance difficulty and cost. By improving the sealing performance and connection stability inside the wheelset 102, the axle design of this invention helps improve the overall performance of the vehicle. This includes better stability, ride comfort, noise control, and a longer service life. At the same time, by reducing the risk of damage to the internal components of the wheelset 102 from external factors, the probability of vehicle malfunction and maintenance costs are also reduced.

[0070] Furthermore, by setting the shoulder 120, the bolt connection between the axle body 100 and the cover in the related technology is eliminated, which not only simplifies the connection efficiency between the axle and the cover, but also avoids the cover falling off due to bolt aging.

[0071] According to one embodiment of the present invention, a bushing 124 is sleeved on the axle body 100, and a connecting seat 126 is provided on the bushing 124. The connecting seat 126 is stepped. The bushing 124 is connected to the motor 128 through the connecting seat 126, and the motor 128 is adapted to achieve lateral positioning with the bushing 124 through the connecting seat 126.

[0072] See Figure 2 and Figure 3 According to one embodiment of the present invention, the connection method between the axle and the motor 128 is further optimized. The connection structure between the connecting seat 126 on the bushing 124 and the motor 128 not only improves the stability and accuracy of the connection, but also facilitates the installation and positioning of the motor 128.

[0073] Specifically, a bushing 124 is fitted onto the axle body 100. The inner diameter of the bushing 124 matches the outer diameter of the axle body 100 and is fixed to the axle body 100 by interference fit, key connection, or other means. The main function of the bushing 124 is to protect the axle body 100 from wear and corrosion and to act as an intermediary for connecting the motor 128 and other components.

[0074] A connecting seat 126 is provided on the bushing 124. The connecting seat 126 is a stepped structure, and its shape and size can ensure that the connecting seat 126 and the motor 128 fit tightly. The function of the connecting seat 126 is to fix the motor 128 on the bushing 124 and transmit the power generated by the motor 128 to the axle body 100.

[0075] The motor 128 can be connected to the connecting seat 126 by bolts. Since the connecting seat 126 is stepped, its different stepped surfaces can be used to define the relative position of the motor 128 and the bushing 124, thereby achieving lateral positioning of the motor 128. This positioning method not only improves the accuracy and stability of the connection, but also helps to reduce vibration and noise caused by the positional deviation of the motor 128.

[0076] The design of the bushing 124 and the connecting seat 126 provides a more robust support for the connection between the motor 128 and the axle body 100. This connection method can resist various forces and vibrations during vehicle operation, ensuring the continuity and stability of power transmission. The stepped design of the connecting seat 126 allows the motor 128 to be precisely positioned on the bushing 124, reducing vibration and noise caused by positional deviations. This high-precision connection helps improve the overall performance and ride comfort of the vehicle. The design of the bushing 124 and the connecting seat 126 simplifies the installation process of the motor 128. Operators only need to fix the motor 128 on the connecting seat 126 to complete the installation, without the need for complex adjustments and calibrations. At the same time, when maintenance or replacement of the motor 128 is required, related components can be easily disassembled and replaced. By optimizing the connection method between the axle body 100 and the motor 128, the axle design of the present invention helps to improve the overall performance of the vehicle.

[0077] A second aspect of the present invention provides a wheelset 102, including a wheel and the aforementioned axle, wherein the wheel is connected to both ends of the axle.

[0078] According to the second aspect of the present invention, the wheelset 102, due to the aforementioned optimized axle design, significantly improves the overall performance of the wheelset 102. The mounting base 104 and the fork arm 106 structure on the axle not only enhance the connection strength between the axle and the frame 134 but also improve the stability and safety of the wheelset 102 under high-speed operation. This stable connection allows the wheels to more accurately follow the vehicle's trajectory, reducing energy loss due to vibration and swaying, and improving driving efficiency. Through the robust connection between the axle body 100 and the fork arm 106, the wheelset 102 can bear greater weight and load. This high load-bearing capacity of the wheelset 102 ensures stable vehicle operation under various working conditions and extends its service life. The modular design of the wheelset 102 makes the installation process simpler and faster. The wheels can be directly connected to both ends of the axle without complex adjustments or alignment work. Similarly, when maintenance or component replacement is required, the wheels or axle assemblies can be easily disassembled and replaced, reducing maintenance costs and downtime. The elimination of the axle box significantly improves the assembly efficiency of the wheelset 102. Therefore, the wheelset 102 provided in the second aspect of the present invention, by combining an optimized axle design and wheel connection method, achieves improved overall performance, enhanced load-bearing capacity, simplified installation and maintenance, improved dynamic balance, and wide applicability.

[0079] A third aspect of the present invention provides a rail vehicle, including a frame 134 and the aforementioned axle;

[0080] Alternatively, it may include frame 134 and the aforementioned wheelset.

[0081] According to the third aspect of the present invention, the rail vehicle significantly improves the overall performance and operating efficiency of the vehicle by integrating the aforementioned axle or wheelset 102. Whether using the optimized axle or the wheelset 102 containing the axle, the operational stability of the rail vehicle is greatly enhanced. The structural design of the mounting base 104 and the fork arm 106 on the axle ensures a stable connection between the wheelset 102 and the frame 134, reducing instability caused by vibration and swaying, and making the vehicle more stable when running at high speeds or passing through curves. The optimized design of the axle and wheelset 102 not only improves operational stability but also significantly enhances the safety performance of the rail vehicle. The robust connection structure and high-quality manufacturing materials can withstand greater loads and impacts, reducing the risk of safety accidents due to component failure. The axle or wheelset 102 with the above-described design helps optimize the overall spatial layout of the rail vehicle. The compact structural design reduces unnecessary space occupation, making the interior space of the vehicle more spacious and improving passenger comfort. At the same time, the optimized layout also helps improve the vehicle's load capacity and operating efficiency. Thanks to the optimized design of the axle or wheelset 102, vibration and noise are reduced, significantly improving the ride comfort of the rail vehicle. Passengers can enjoy a smoother and quieter riding environment during the journey, enhancing their travel experience.

[0082] According to one embodiment of the present invention, a support base 130 is provided on the frame 134, and a suspension positioning platform 132 is provided on the support base 130.

[0083] See Figure 1 and Figure 2 In one embodiment of the present invention, in order to improve the driving stability and safety of the rail vehicle, a support seat 130 is designed on the frame 134, and a first-stage suspension positioning platform 132 is installed on the support seat 130.

[0084] As the basic support structure of the rail vehicle, frame 134 bears the main weight of the vehicle and various dynamic loads during operation. Its design must have sufficient strength and rigidity to ensure stability and durability under various working conditions.

[0085] A support base 130 is provided on the frame 134. As a key component connecting the frame 134 and the suspension system, the structural design of the support base 130 must fully consider factors such as load-bearing capacity, vibration absorption, and impact resistance. The support base 130 can be made of high-strength materials to ensure stability and reliability under complex working conditions.

[0086] A primary suspension positioning platform 132 is installed on the support 130. The primary suspension positioning platform 132 can integrate various functional components such as a guide mechanism, vibration damping elements, and positioning devices, aiming to achieve an efficient and stable connection between the axle and the frame 134. By precisely adjusting the parameters and layout of each functional component, the primary suspension positioning platform 132 can ensure that the wheels maintain the correct position and direction during driving, while effectively absorbing and dispersing vibrations and impacts from the road surface.

[0087] The support 130 is securely connected to the frame 134 via the primary suspension positioning platform 132. This connection method not only ensures the reliability of the connection but also allows for dynamic adjustments based on the vehicle's driving conditions and road surface conditions. By optimizing the design and adjustment parameters of the suspension system, the suspension system can respond to the vehicle's driving conditions in real time and make dynamic adjustments, thereby improving the vehicle's driving stability and ride comfort.

[0088] Furthermore, compared to the columnar primary suspension positioning structure in related technologies, the primary suspension positioning platform 132 provided in this embodiment of the invention can effectively improve the load-bearing capacity by increasing the platform area. That is, the platform structure in the primary suspension positioning platform 132 can ensure that the primary suspension positioning platform 132 can distribute the load on the bushing 124.

[0089] The support 130 and its primary suspension positioning platform 132 provide a more robust support for the connection between the axle and the frame 134. This design significantly improves the reliability and durability of the connection, reducing safety hazards caused by loosening or failure of the connection. The introduction of the primary suspension positioning platform 132 optimizes the vehicle's suspension system. Through its integrated guiding mechanism, damping elements, and positioning device, the platform effectively enhances the stability and directionality of the wheels during driving. Simultaneously, the suspension system can more effectively absorb and disperse vibrations and impacts from the road surface, improving vehicle driving safety and ride comfort. The setup of the support 130 and the primary suspension positioning platform 132 significantly improves the vehicle's driving stability. They ensure that the wheels maintain the correct position and direction under complex road conditions, reducing the risk of loss of control due to wheel deviation. This helps improve vehicle handling and safety, especially at high speeds or in adverse road conditions. Because the support 130 and the primary suspension positioning platform 132 are designed with durability and ease of maintenance in mind, vehicle maintenance costs can be reduced. These components maintain stable performance over long-term use, reducing downtime and maintenance costs caused by malfunctions and damage. Furthermore, their excellent maintainability and ease of replacement facilitate operation and maintenance work for repair personnel.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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; and these 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 the present invention.

Claims

1. An axle, characterized in that, include: Axle body, wherein a mounting seat is provided on the axle body near the inner side of the wheelset; The fork arm includes a single-arm end and a double-arm end connected to the single-arm end. The single-arm end is connected to the mounting base, and the double-arm end is used to connect to the frame. The double arm ends are provided with a second mounting hole, and a second connecting shaft is inserted through the second mounting hole. The double arm ends are adapted to be connected to the frame through the second connecting shaft. A limiting platform is provided on the second connecting shaft, and the double arm ends are adapted to be laterally positioned relative to the frame by the limiting platform; and / or The second connecting shaft is adapted to be positioned relative to the second mounting hole by means of the limiting platform.

2. The axle according to claim 1, characterized in that, The mounting base is provided with a cover, and an installation space is formed between the mounting base and the cover. The single arm end is inserted into the installation space and is fitted with the installation space with a clearance.

3. The axle according to claim 2, characterized in that, The single arm has a first mounting hole, and a first connecting shaft passes through the first mounting hole and is rotatably connected to the mounting space.

4. The axle according to any one of claims 1 to 3, characterized in that, A shoulder is provided on the axle body near the inner side of the wheelset. The shoulder is adapted to press the cover of the wheelset tightly against the wheelset and to construct a sealing structure between the cover and the wheelset.

5. The axle according to any one of claims 1 to 3, characterized in that, A bushing is fitted onto the axle body, and a connecting seat is provided on the bushing. The connecting seat is stepped, and the bushing is connected to the motor through the connecting seat. The motor is adapted to achieve lateral positioning with the bushing through the connecting seat.

6. A wheelset, characterized in that, It includes wheels and an axle as described in any one of claims 1 to 5, wherein the wheels are connected to both ends of the axle.

7. A rail vehicle, characterized in that, Includes the frame and the axle as described in any one of claims 1 to 5; Alternatively, it may include a frame and the wheelset as described in claim 6.

8. The rail vehicle according to claim 7, characterized in that, The frame is provided with a support base, and a suspension positioning platform is provided on the support base.

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