Vehicle wheel set, bogie and rail vehicle

Abstract

The invention discloses a vehicle wheel set, a bogie and a railway vehicle. The elastic wheels are fixedly arranged on the outer side of the axle in a sleeving mode, the two elastic wheels are symmetrically arranged at the two ends of the axle, and the elastic wheels are used in cooperation with a first steel rail; the rigid wheels are fixedly arranged on the outer side of the axle in a sleeving mode, the two rigid wheels are symmetrically arranged on the axle, each rigid wheel is provided with a supporting part and a rim part, the outer diameter of each supporting part is smaller than that of each rim part, and each rim part is used for making contact with the side face of a second steel rail for guiding. Compared with the prior art, the vehicle wheel set, the bogie and the rail vehicle can temporarily bear the vehicle when the rubber wheels are abraded, normal operation of the vehicle is guaranteed, and guiding can be conducted.

Description

Technical Field

[0001] The present application relates to the technical field of rail vehicles, and more specifically, to a vehicle wheelset, a bogie and a rail vehicle. Background Art

[0002] Wheelset is the part of the locomotive that contacts the rails. It consists of two wheels firmly pressed on the same axle. The function of the wheelset is to ensure the running and steering of the locomotive on the rails, bear all the static and dynamic loads from the locomotive, transfer them to the rails, and transfer the loads caused by the unevenness of the track to the various parts of the locomotive.

[0003] At present, the wheelsets of subway vehicles often use rubber-tyred rail transit products. Since rubber-tyred rail transit products use rubber tires for load-bearing and guiding, their climbing ability, curve noise and vehicle comfort have been significantly improved.

[0004] However, rubber-tyred rail transit products also have certain shortcomings during use. Specifically, on the one hand, when the rubber wheels are worn to a certain extent, the vehicle will be unable to operate; on the other hand, rubber-tyred vehicles cannot be guided.

[0005] Therefore, there is an urgent need for a vehicle wheelset, a bogie and a rail vehicle, which can temporarily carry the vehicle when the rubber wheel is worn, ensure the normal operation of the vehicle, and also guide the vehicle. Summary of the invention

[0006] In order to solve the above technical problems, the present application provides a vehicle wheelset, a bogie and a rail vehicle, which can temporarily carry the vehicle when the rubber wheel is worn, ensure the normal operation of the vehicle, and can also guide it.

[0007] The technical solutions provided by this application are as follows: A vehicle wheelset, comprising: Axles; An elastic wheel fixedly sleeved on the outer side of the axle, two elastic wheels symmetrically arranged at two ends of the axle, and the elastic wheel is used in conjunction with the first rail; A rigid wheel is fixedly mounted on the outer side of the axle, two of the rigid wheels are symmetrically arranged on the axle, the rigid wheel has a support portion and a rim portion, the outer diameter of the support portion is smaller than the outer diameter of the rim portion, and the rim portion is used to contact the side of the second rail for guidance.

[0008] Preferably, the outer diameter of the support portion is smaller than the outer diameter of the elastic wheel.

[0009] Preferably, the elastic wheel comprises: A mounting plate fixedly mounted on the axle; An elastic wheel is sleeved on the outer side of the mounting plate.

[0010] Preferably, it also includes: A locking member is disposed between the mounting plate and the rigid wheel.

[0011] Preferably, there is interference fit between the mounting plate and the axle, and between the rigid wheel and the axle.

[0012] Preferably, the elastic wheel is arranged on the outside of the rigid wheel; The elastic wheel is arranged on the inner side of the rigid wheel.

[0013] Preferably, it also includes: An axle box is sleeved on the outside of the axle and is rotatably connected to the axle. Two axle boxes are symmetrically arranged on both sides of the axle.

[0014] Preferably, the axle box is arranged on the inner side of the rigid wheel; or, The axle box is arranged on the outer side of the elastic wheel.

[0015] A bogie comprises the vehicle wheelset described in any one of the above items.

[0016] A rail vehicle comprises the bogie described above.

[0017] The vehicle wheelset provided by the present invention firstly comprises an axle and an elastic wheel, wherein the elastic wheel is fixedly sleeved on the outer side of the axle, and the two elastic wheels are symmetrically arranged on both sides of the axle, and the elastic wheel is used to cooperate with the first rail. When the vehicle is in a normal driving state, the elastic wheel bears the weight of the whole vehicle, and the rotation of the elastic wheel drives the vehicle to run on the first rail, so that the vehicle runs more smoothly and comfortably, and the running noise is smaller; secondly, a rigid wheel is also provided, the rigid wheel is fixedly sleeved on the axle, and the two rigid wheels are symmetrically arranged on the axle, the rigid wheel has a supporting part and a rim part, the outer diameter of the supporting part is smaller than the outer diameter of the rim part, and the rim part is used to contact with the side of the second rail for guiding, when the vehicle is running normally, the outer surface of the elastic wheel contacts with the first rail, and is used to bear the weight of the vehicle, and the rim part contacts with the side of the second rail to guide the running direction of the vehicle. The current elastic wheels are prone to wear during operation. When the outer surface of the elastic wheel is severely worn, the vehicle cannot operate normally. In this application, by setting a rigid wheel, when the outer surface of the elastic wheel is severely worn, the support part contacts the second rail, and the whole vehicle can be supported urgently. It can be seen that compared with the prior art, the vehicle wheelset in the embodiment of the present invention can temporarily carry the vehicle when the rubber wheel is worn, ensure the normal operation of the vehicle, and guide the vehicle.

[0018] The present invention also provides a bogie, including the above-mentioned vehicle wheelset, which can also achieve the above-mentioned technical effect.

[0019] The present invention also provides a rail vehicle, including the above-mentioned bogie, which can also achieve the above-mentioned technical effects and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of a first structural example of a vehicle wheelset provided by an embodiment of the present invention; Figure 2 for Figure 1 A cross-sectional view of Figure 3 A second structural schematic diagram of a vehicle wheelset provided by an embodiment of the present invention; Figure 4 A third structural schematic diagram of a vehicle wheelset provided in an embodiment of the present invention.

[0022] Figure numerals: 1, axle; 2, elastic wheel; 3, rigid wheel; 4, axle box; 31, support part; 32, wheel rim; 21, mounting plate; 22, elastic wheel; 7, locking piece; 5, first rail; 6, second rail. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0027] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0028] The embodiments of the present invention are written in a progressive manner.

[0029] like Figures 1 to 4 As shown, Figure 1 and Figure 2 A vehicle wheelset is provided, wherein Figure 1 and Figure 2 In the embodiment, the rigid wheel 3 is arranged on the outside of the elastic wheel 2, and the axle box is arranged on the outside of the rigid wheel 3; Figure 3 A second vehicle wheelset is provided, wherein the elastic wheel 2 is arranged on the outside of the rigid wheel 3, and the axle box is arranged on the inside of the rigid wheel 3; Figure 4 A third vehicle wheelset is provided, wherein the elastic wheel 2 is arranged on the outside of the rigid wheel 3, and the box axle is arranged between the elastic wheel 2 and the rigid wheel 3.

[0030] An embodiment of the present invention provides a vehicle wheelset, comprising: an axle 1; an elastic wheel 2 fixedly mounted on the outer side of the axle 1, wherein the two elastic wheels 2 are symmetrically arranged at both ends of the axle 1, and the elastic wheels are used in conjunction with a first rail 5; a rigid wheel 3 fixedly mounted on the outer side of the axle 1, wherein the two rigid wheels 3 are symmetrically arranged on the axle 1, and wherein the rigid wheel 3 has a support portion 31 and a rim portion 32, wherein the outer diameter of the support portion 31 is smaller than the outer diameter of the rim portion 32, and the rim portion 32 is used to contact the side of the second rail 6 for guidance.

[0031] It should be noted that the inner side in the present application refers to a side close to the center of the axle 1 , and the outer side in the present application refers to a side close to both ends of the axle 1 .

[0032] At present, the common wheel pairs of subway vehicles are rubber-wheeled vehicles and steel-wheeled vehicles. Rubber-wheeled vehicles use rubber wheels to carry loads, and their climbing ability, curve noise, and vehicle comfort have been significantly improved. However, rubber wheels are easy to wear. When rubber-wheeled vehicles are in an emergency situation such as severe wear, the vehicle may not be able to operate. Secondly, rubber-wheeled vehicles may have problems with being unable to guide when passing through switches.

[0033] Steel-wheeled vehicles are not easily worn and can guide vehicles when passing through switches, but they are noisy and not very comfortable.

[0034] In view of the above problems, the present invention provides a vehicle wheelset. The present invention provides a vehicle wheelset, firstly, because an axle 1 and an elastic wheel 2 are provided, wherein the elastic wheel 2 is fixedly sleeved on the outer side of the axle 1, and the two elastic wheels 2 are symmetrically arranged on both sides of the axle 1, and the elastic wheel 2 is used to cooperate with the first rail 5. When the vehicle is in a normal driving state, the elastic wheel 2 bears the weight of the whole vehicle, and the elastic wheel 2 rotates to drive the vehicle to run on the first rail 5, so that the vehicle runs more smoothly and comfortably, and the running noise is smaller; secondly, a rigid wheel 3 is also provided, the rigid wheel 3 is fixedly sleeved on the axle 1, and the two rigid wheels 3 are symmetrically arranged on the axle 1, the rigid wheel 3 has a support portion 31 and a rim portion 32, the outer diameter of the support portion 31 is smaller than the outer diameter of the rim portion 32, and the rim portion 32 is used to contact the side of the second rail 6 for guidance. When the vehicle is running normally, the outer surface of the elastic wheel 2 contacts the first rail 5 for bearing the weight of the vehicle, and the rim portion 32 contacts the side of the second rail 6 to guide the direction of the vehicle. The current elastic wheel 2 is prone to wear during operation. When the outer surface of the elastic wheel 2 is severely worn, the vehicle may not be able to operate normally. In the present application, a rigid wheel 3 is provided. When the outer surface of the elastic wheel 2 is severely worn, the support portion 31 contacts the second rail 6, thereby providing emergency support for the entire vehicle.

[0035] It can be seen that, compared with the prior art, the vehicle wheelset in the embodiment of the present invention can temporarily carry the vehicle when the rubber wheel is worn, ensure the normal operation of the vehicle, and can also guide the vehicle.

[0036] Furthermore, the elastic wheel 2 in the embodiment of the present invention is used to cooperate with the first rail 5, and the rigid wheel 3 is used to cooperate with the second rail 6. When the elastic wheel 2 is not worn, the outer peripheral surface of the elastic wheel 2 contacts the top surface of the first rail 5. At this time, the rim 32 of the rigid wheel 3 contacts the side of the second rail 6, and there is a preset gap between the support portion 31 of the rigid wheel 3 and the top surface of the second rail 6. The vehicle is supported by the first rail 5 and the elastic wheel 2, and guided by the side of the second rail 6 and the rim 32. When the elastic wheel 2 is worn to a certain extent, the support portion 31 of the rigid wheel 3 contacts the top of the second rail 6, and the vehicle is temporarily supported and guided by the side of the second rail 6 and the rim 32.

[0037] In order to ensure that there is a gap between the support portion 31 of the rigid wheel 3 and the second rail 6 when the elastic wheel 2 is not worn, as one implementation, the outer diameter of the support portion 31 in the embodiment of the present invention is smaller than the outer diameter of the elastic wheel 2 .

[0038] In the above structure, in order to make the second rail 6 and the rim 32 cooperate when the vehicle passes the switch, as one of the implementation methods, the surface of the rim 32 in the embodiment of the present invention that contacts the second rail 6 has a certain taper, which plays a guiding role.

[0039] Furthermore, when the turnout passes through a curve, the contact surface between the wheel rim 32 and the second steel rail 6 forms a certain taper, which plays a guiding role. Current rubber-tyred vehicles often need to be provided with guide wheels for guidance. Since the present application is provided with rigid wheels, there is no need to provide guide wheels. When the vehicle is running in a straight line, there is a gap between the wheel rim and the second steel rail 6, and there is no direct contact. When the vehicle moves along a curve, the wheel rim directly contacts the second steel rail 6, which plays a guiding role.

[0040] In the above structure, as one of the implementation modes, the elastic wheel 2 in the embodiment of the present invention includes a mounting plate 21 and an elastic wheel 22, wherein the mounting plate 21 is fixedly connected to the axle 1, and the elastic wheel 22 is fixedly mounted on the outer side of the mounting plate 21. The elastic wheel 22 can buffer the vibration of the vehicle and improve the comfort of the passengers.

[0041] Furthermore, the elastic wheel 22 and the mounting plate are detachably connected. When the elastic member is worn, the elastic wheel 22 can be replaced without replacing the entire elastic wheel 2.

[0042] As a first implementation manner, the elastic wheel 22 may be made of an elastic material, preferably a rubber material.

[0043] As a second embodiment, a buffer may be provided between the elastic wheel 22 and the mounting plate 21 to reduce vibration and noise.

[0044] In the above structure, as one of the implementation modes, the mounting plate 21 in the embodiment of the present invention and the axle 1 are specifically an interference fit, so that the mounting plate 21 is fixed on the axle 1, and the rigid wheel 3 and the axle 1 are specifically an interference fit, so that the rigid wheel 3 and the axle 1 are fixed.

[0045] In the above structure, in order to further ensure the stability of the elastic wheel 2 during operation, as one of the implementation modes, the vehicle wheelset in the embodiment of the present invention also includes a locking member 7, wherein the fastener is used to connect the mounting plate 21 and the rigid wheel 3, further ensuring that the mounting plate is fixedly set on the axle 1, and further ensuring the stability of the elastic wheel 2 during operation.

[0046] In the above structure, the specific position between the rigid wheel 3 and the elastic wheel 2 can be selected according to the actual use conditions. As a first specific implementation, the elastic wheel 2 in the embodiment of the present invention is arranged on the inner side of the rigid wheel 3, and correspondingly, the first rail 5 is arranged on the inner side of the second rail 6. As a second specific implementation, the elastic wheel 2 in the embodiment of the present invention is arranged on the outer side of the rigid wheel 3, and correspondingly, the first rail 5 is arranged on the outer side of the second rail 6. In the above two cases, when the vehicle is running normally, the elastic wheel 2 cooperates with the first rail 5, the elastic wheel 2 bears the weight of the vehicle, drives the vehicle to travel, and guides the vehicle through the cooperation of the rigid wheel 3 and the second rail 6.

[0047] In the above structure, as one specific implementation, the vehicle wheelset provided in the embodiment of the present invention further includes an axle box 4, which is sleeved on the axle 1, and the axle box 4 is rotatably connected to the axle 1. Two axle boxes 4 are provided, and the two axle boxes 4 are symmetrically arranged on both sides of the axle 1. Specifically, the axle box 4 in the embodiment of the present invention is connected to the axle 1 through a bearing.

[0048] Furthermore, as one of the specific implementations, the position of the axle box 4 in the embodiment of the present invention can be adjusted according to the operating conditions of the vehicle. Specifically, the axle box 4 in the embodiment of the present invention can be set on the inner side of the rigid wheel 3, or the axle box 4 is set on the outer side of the elastic wheel 2; or the axle box is set between the elastic wheel 2 and the rigid wheel 3.

[0049] Preferably, the axle box 4 in this embodiment is arranged on the inner side of the rigid wheel 3, and the elastic wheel 2 is arranged on the outer side of the rigid wheel 3. In this case, the arrangement of the vehicle wheel set structure is more compact.

[0050] In the above structure, as one of the implementation modes, the vehicle wheelset in the embodiment of the present invention further includes a driving member, the output shaft of the driving member is connected to the axle 1, and the axle 1 is driven to rotate by the driving member, thereby driving the rigid wheel 3 and the elastic wheel 2 to rotate.

[0051] The present invention also provides a bogie, including the above-mentioned vehicle wheelset. Since a rigid wheel 3 and an elastic wheel 2 are provided, in an emergency, when the elastic wheel 2 cannot carry load, the rigid wheel 3 can be used for emergency load carrying, thereby solving the problem that the vehicle cannot move.

[0052] The present invention also provides a rail vehicle, including the above-mentioned bogie, which can also achieve the above-mentioned technical effects and will not be described in detail here.

[0053] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle wheelset, characterized in that: include: Axle (1); an elastic wheel (2) fixedly sleeved on the outside of the axle (1), wherein two elastic wheels (2) are symmetrically arranged at two ends of the axle (1), and the elastic wheels (2) are used in conjunction with a first steel rail (5); A rigid wheel (3) is fixedly mounted on the outside of the axle (1), and two rigid wheels (3) are symmetrically arranged on the axle (1). The rigid wheel (3) comprises a support portion (31) and a rim portion (32). The outer diameter of the support portion (31) is smaller than the outer diameter of the rim portion (32). The rim portion (32) is used to contact the side of the second rail (6) for guidance.

2. The vehicle wheelset according to claim 1, characterized in that: The outer diameter of the support portion (31) is smaller than the outer diameter of the elastic wheel (2).

3. The vehicle wheelset according to claim 2, characterized in that: The elastic wheel (2) comprises: A mounting plate (21) fixedly mounted on the axle (1); An elastic wheel (22) is sleeved on the outer side of the mounting plate (21).

4. The vehicle wheelset according to claim 3, characterized in that: Also includes: A locking member (7) is arranged between the mounting plate (21) and the rigid wheel (3).

5. The vehicle wheelset according to claim 4, characterized in that: There is an interference fit between the mounting plate (21) and the axle (1), and between the rigid wheel (3) and the axle (1).

6. The vehicle wheelset according to any one of claims 1 to 5, characterized in that: The elastic wheel (2) is arranged on the outside of the rigid wheel (3); The elastic wheel (2) is arranged on the inner side of the rigid wheel (3).

7. The vehicle wheelset according to claim 6, characterized in that: Also includes: An axle box (4), the axle box (4) being sleeved on the outside of the axle (1), the axle box (4) being rotationally connected to the axle (1), and the two axle boxes (4) being symmetrically arranged on both sides of the axle (1).

8. The vehicle wheelset according to claim 7, characterized in that: The axle box (4) is arranged on the inner side of the rigid wheel (3); or, The axle box (4) is arranged on the outside of the elastic wheel (2).

9. A bogie, characterized in that: A vehicle wheelset comprising any one of claims 1 to 8.

10. A rail vehicle, characterized in that: Including the bogie described in claim 9.

Images