Rotating wheel mechanism capable of improving rotating stability of wheel set

Abstract

The invention relates to the field of wheel set detection, in particular to a rotating wheel mechanism capable of improving the rotating stability of a wheel set, and the rotating wheel mechanism comprises two rotating wheel assemblies which are oppositely arranged; the rotating wheel assembly is used for being in friction fit with a rim part of a wheel so as to drive the wheel to rotate. As the rim part is generally not stressed, worn and deformed in the use process of the wheel, the shape and the size of the rim are closer to initial design values, the rotating wheel mechanism drives the wheel to rotate in a mode of centering the rim of the wheel in a friction wheel pair, the boundary dimensions of the rims of the wheels on the two sides are consistent, the posture of the wheel pair is stable in the rotating process, and the wheel pair can rotate more stably. And axial movement is not easy to occur.

Description

Technical Field

[0001] The invention relates to the field of wheelset detection, and in particular to a wheel mechanism capable of improving the rotation stability of a wheelset. Background Art

[0002] With the development of my country's high-speed railways, more and more EMUs and high-speed railways are put into operation. Therefore, regular maintenance of wheelsets is one of the key measures to ensure the safety of EMU operation. As a key component of the train, the quality of wheelsets needs to be strictly inspected. After each certain number of kilometers of travel, the wheels of high-speed trains must be inspected all around to ensure the safety of train operation. When the wheelset is tested for wheel drop, the wheel turning mechanism is required to drive the wheels to rotate by rubbing against the wheel treads in the wheelset (the friction force is brought by the gravity of the wheelset) in order to detect various parameters of the wheels. However, when the existing wheel turning mechanism drives the wheels to rotate, due to the inconsistent wear of the wheel treads on both sides of the wheelset, the rotation posture of the wheels may be unstable, and axial movement may occur, resulting in the risk of the wheelset falling off the wheel turning mechanism. Summary of the invention

[0003] In view of this, the present invention provides a turning wheel mechanism that can improve the rotation stability of the wheelset, aiming to reduce the axial movement of the wheelset when the wheelset is driven to rotate by the turning wheel mechanism, and prevent the wheelset from falling off the turning wheel mechanism.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A wheel mechanism capable of improving the rotation stability of a wheelset comprises two wheel assemblies arranged opposite to each other; the wheel assemblies are used for frictionally cooperating with the wheel rim part of the wheel to drive the wheel to rotate.

[0006] In some embodiments, the wheel assembly includes a bracket, a support and a wheel component; the support is installed on the bracket; two wheel components are installed side by side on the support; the wheel component includes a rotating wheel, and the rotating wheel is used to frictionally cooperate with the rim portion of the wheel to drive the wheel to rotate.

[0007] In some embodiments, the rotating wheel in one of the rotating wheel assemblies is a V-shaped rotating wheel or a U-shaped rotating wheel, and the rotating wheel in the other rotating wheel assembly is a straight rotating wheel.

[0008] In some embodiments, the portion of the V-shaped rotating wheel for frictionally engaging with the rim portion of the wheel has a circumferentially arranged V-shaped groove or a trapezoidal groove.

[0009] In some embodiments, the portion of the U-shaped rotating wheel for frictionally engaging with the rim portion of the wheel has a circumferentially arranged U-shaped groove.

[0010] In some embodiments, the portion of the straight rotating wheel for frictionally engaging with the rim portion of the wheel is a cylinder.

[0011] In some embodiments, a transmission mechanism is provided between the two rotating wheel assemblies to enable the rotating wheels to keep rotating synchronously.

[0012] In some embodiments, the transmission mechanism includes a transmission shaft, one end of which is transmission-connected to one of the rotating wheels in one of the rotating wheel assemblies, and the other end of which is transmission-connected to one of the rotating wheels in the other rotating wheel assembly.

[0013] In some embodiments, the transmission mechanism further includes a rotation drive mechanism; the rotation drive mechanism is in transmission connection with the transmission shaft.

[0014] In some embodiments, the transmission mechanism further includes a chain; a driving sprocket is mounted on the rotation drive mechanism; a driven sprocket is mounted on the transmission shaft; and the chain transmission is connected between the driving sprocket and the driven sprocket.

[0015] In summary, compared with the prior art, the present invention has the following advantages and beneficial effects: since the rim part is usually not subjected to force, will not wear or deform during the use of the wheel, the shape and size of the rim are closer to the initial design value, and the turning wheel mechanism described in the present invention drives the wheel to rotate by rubbing the rim of the wheel in the wheelset, and the rims of the wheels on both sides have the same outer dimensions, so the wheelset has a stable posture when rotating and is not prone to axial movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention when the driving wheel pair rotates.

[0017] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0018] Figure 3 It mainly illustrates the positional relationship between the wheel and the rotating wheel.

[0019] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of area A in the middle.

[0020] Figure 5 for Figure 3 Schematic diagram of the enlarged structure of area B in the middle.

[0021] The meanings of the numbers in the figure are: wheelset 1, wheel 11, wheel rim 12, transmission mechanism 2, rotation drive mechanism 21, driving sprocket 22, chain 23, transmission shaft 24, driven sprocket 25, rotating wheel assembly 3, bracket 31, support 32, rotating wheel component 33, rotating wheel 331. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0023] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 invention.

[0024] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there are any descriptions of "first", "second" and the like, they are only used for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] As described in the background technology, the existing wheel turning mechanism drives the wheel to rotate by rubbing the wheel tread in the wheel set. Since the wear of the wheel treads on both sides of the wheel set is inconsistent, the wheel set is prone to axial movement when driving the wheel set to rotate in this way. The fundamental reason is that the tread of the wheel is often in contact with the surface of the rail, which is prone to wear and deformation, resulting in inconsistent external dimensions of the wheel treads on both sides. The wheel rim is the part of the wheel tread that contacts and protrudes from the inner side of the rail. The main function of the wheel rim is to ensure that the wheel does not deviate from the track during driving. The protruding wheel rim part will not wear or deform, so it can always maintain a good initial design size.

[0027] The applicant has designed the following based on this feature of the wheel rim: Figure 1A wheel mechanism for improving the rotation stability of a wheelset is shown, the wheel mechanism comprising two wheel assemblies 3 arranged opposite to each other, the two wheel assemblies 3 being arranged corresponding to the two wheels 11 of the wheelset 1 respectively, the wheel assemblies 3 being used for frictionally cooperating with the rim 12 of the wheel 11 to drive the wheel 11 to rotate. Since the rim 12 is usually not subjected to force during the use of the wheel 11, and will not be worn or deformed, the shape and size of the rim 12 are closer to the initial design value. The wheel mechanism described in the embodiment of the present application drives the wheel 11 to rotate by friction with the rim 12 of the wheel 11 in the wheelset 1, and the rims 12 of the wheels 11 on both sides have the same outer dimensions, so the wheelset 1 is stable in posture during rotation and is not prone to axial movement.

[0028] As an optional implementation, Figure 2 As shown, the wheel assembly 3 may include a bracket 31, a support 32 and a wheel component 33. The support 32 is mounted on the bracket 31, and two wheel components 33 are mounted side by side on the support 32. Optionally, the wheel component 33 may include a rotating wheel 331 and a rotating shaft, the rotating wheel 331 is mounted on one end of the rotating shaft, and the other end of the rotating shaft is mounted on the support 32 through a bearing. The two rotating wheels 331 in the two wheel components 33 in the same wheel assembly 3 are arranged at a certain distance to facilitate the bearing of the wheel rim 12 of the wheel 11, and the rotating wheel 331 is used to frictionally cooperate with the wheel rim 12 of the wheel 11 to drive the wheel 11 to rotate.

[0029] In order to further prevent the wheelset 1 from axial movement when being driven by the wheel mechanism, Figure 3 As shown, in the two rotating wheel assemblies 3 described in the embodiment of the present application, the rotating wheel 331 in one rotating wheel assembly 3 is a V-shaped rotating wheel or a U-shaped rotating wheel, and the rotating wheel 331 in the other rotating wheel assembly 3 is a straight rotating wheel.

[0030] It is necessary to further explain here that Figure 4 As shown, the V-shaped rotating wheel means that the portion thereof used for frictional engagement with the wheel rim 12 of the wheel 11 has a circumferentially arranged V-shaped groove or a trapezoidal groove. The U-shaped rotating wheel means that the portion thereof used for frictional engagement with the wheel rim 12 of the wheel 11 has a circumferentially arranged U-shaped groove, or in other words, the outer surface of the portion of the U-shaped rotating wheel used for frictional engagement with the wheel rim 12 of the wheel 11 is a single-leaf hyperboloid structure.

[0031] And as Figure 5 As shown, the straight rotating wheel refers to a portion thereof that is used for frictional engagement with the rim 12 of the wheel 11 and is a cylinder.

[0032] For example, the rotating wheel 331 in the left rotating wheel assembly 3 is a V-shaped rotating wheel or a U-shaped rotating wheel, and the rotating wheel 331 in the right rotating wheel assembly 3 is a straight rotating wheel. In this way, when the rotating wheel mechanism described in the embodiment of the present application is used to drive the wheelset 1 to rotate, the rim 12 of the left wheel 11 of the wheelset 1 is located in the V-shaped groove, trapezoidal groove or U-shaped groove of the rotating wheel 331. The groove on the rotating wheel 331 can not only support the rim 12, but also guide the rim 12 to move to the lowest point of the groove under the action of gravity, and then restrict it to always move near this lowest point, so as to prevent the wheelset 1 from moving. The straight rotating wheel on the right side only supports the rim 12 of the right wheel 11 of the wheelset 1, so at this time, the wheelset 1 can easily reach a rotational balance posture.

[0033] If the rotating wheels 331 on the left and right are designed to be V-shaped rotating wheels or U-shaped rotating wheels, the rims 12 of the wheels 11 on both sides of the wheelset 1 are located in the grooves of the rotating wheels 331. At this time, the rotating wheel 331 on the left has a guiding and limiting effect on the rim 12 of the left wheel 11. At the same time, the rotating wheel 331 on the right also has a guiding and limiting effect on the rim 12 of the right wheel 11. If the guiding effects on both sides are unbalanced, it may cause the wheelset 1 to be "pulled left and right" when rotating, and then cause axial movement, resulting in unstable rotation posture.

[0034] In addition, if one of the two rotating wheels 331 on the left / right side is a V-shaped rotating wheel or a U-shaped rotating wheel, and the other is a straight rotating wheel, it will still cause the rotation posture of the wheelset 1 to be unbalanced. This is because, assuming that the rim 12 of the left wheel 11 is exactly located in the left V-shaped rotating wheel or the U-shaped rotating wheel, at this time, it is possible that the rim 12 of the right wheel 11 is also exactly located in the right V-shaped rotating wheel or the U-shaped rotating wheel, and the "left-right pulling" as mentioned above will occur, and then axial movement will occur, resulting in an unstable rotation posture, which seriously affects the inspection of the wheelset 1.

[0035] If the left and right rotating wheels 331 are both straight rotating wheels, the wheelset 1 is easy to fall off the straight rotating wheels because there is no restriction on the wheel rim 12 .

[0036] There is also a special case, that is, only one of the rotating wheels 331 on the left and right sides is a V-shaped rotating wheel or a U-shaped rotating wheel, and the other rotating wheels 331 are all straight rotating wheels. At this time, because only one rotating wheel 331 can guide and limit the wheel, it is easy to cause the posture of the wheelset 1 to deflect or tilt, and it is not easy for the wheelset 1 to maintain a balanced posture.

[0037] like Figure 1 and Figure 2As shown, a transmission mechanism 2 can also be arranged between the two rotating wheel assemblies 3 to keep the rotating wheels 331 rotating synchronously. The rotating wheels 331 on the left and right sides keep rotating synchronously, which is beneficial to stabilizing the rotation posture of the wheel set 1.

[0038] The wheelset 1 can be driven to rotate by other driving mechanisms, but as an optional embodiment, such as Figure 2 As shown, the transmission mechanism 2 may further include a transmission shaft 24, one end of which is transmission-connected to one of the rotating wheels 331 in one of the rotating wheel assemblies 3, and the other end of which is transmission-connected to one of the rotating wheels 331 in another rotating wheel assembly 3. This makes one of the rotating wheel components 33 in each rotating wheel assembly 3 become a driving rotating wheel component for driving the wheel 11 to rotate, and the other becomes a driven rotating wheel component for passively bearing the rotation of the wheel 11.

[0039] The transmission mechanism 2 may further include a rotation drive mechanism 21, which is in transmission connection with the transmission shaft 24 so that the driving wheel component can drive the wheel 11 to rotate. The rotation drive mechanism 21 is preferably a servo motor.

[0040] As an optional embodiment, the transmission mechanism 2 further includes a chain 23; a driving sprocket 22 is installed on the rotation drive mechanism 21; a driven sprocket 25 is installed on the transmission shaft 24; and the chain 23 is transmission-connected between the driving sprocket 22 and the driven sprocket 25. The main advantages of the chain transmission method are: no elastic sliding and slipping, accurate average transmission ratio, reliable operation, high efficiency; large power transmission, strong overload capacity, small transmission size under the same working conditions; small required tension force, small pressure on the shaft; can work in harsh environments such as high temperature, humidity, dust, pollution, etc.

[0041] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above preferred embodiments shall not be regarded as limiting the present invention, and the protection scope of the present invention shall be subject to the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications shall also be regarded as the protection scope of the present invention.

Claims

1. A wheel mechanism capable of improving the rotation stability of a wheelset, characterized in that: It comprises two rotating wheel assemblies (3) arranged opposite to each other; The rotating wheel assembly (3) is used to frictionally cooperate with the rim (12) portion of the wheel (11) to drive the wheel (11) to rotate.

2. A wheel mechanism capable of improving the rotation stability of a wheelset as claimed in claim 1, characterized in that: The rotating wheel assembly (3) comprises a bracket (31), a support (32) and a rotating wheel component (33); the support (32) is mounted on the bracket (31); two rotating wheel components (33) are mounted side by side on the support (32); the rotating wheel component (33) comprises a rotating wheel (331), and the rotating wheel (331) is used to frictionally cooperate with a wheel rim (12) portion of the wheel (11) to drive the wheel (11) to rotate.

3. A wheel mechanism capable of improving the rotation stability of a wheelset as claimed in claim 2, characterized in that: The rotating wheel (331) in one rotating wheel assembly (3) is a V-shaped rotating wheel or a U-shaped rotating wheel, and the rotating wheel (331) in the other rotating wheel assembly (3) is a straight rotating wheel.

4. A wheel mechanism capable of improving the rotation stability of a wheelset as claimed in claim 3, characterized in that: The portion of the V-shaped rotating wheel used for frictionally engaging with the wheel rim (12) of the wheel (11) has a circumferentially arranged V-shaped groove or a trapezoidal groove.

5. A wheel mechanism capable of improving the rotation stability of a wheelset as claimed in claim 3, characterized in that: The portion of the U-shaped rotating wheel for frictionally engaging with the wheel rim (12) of the wheel (11) has a circumferentially arranged U-shaped groove.

6. A wheel mechanism capable of improving the rotation stability of a wheelset as claimed in claim 3, characterized in that: The portion of the straight rotating wheel that is used for frictionally engaging with the wheel rim (12) of the wheel (11) is a cylinder.

7. A wheel mechanism capable of improving the rotation stability of a wheelset as claimed in claim 2, characterized in that: A transmission mechanism (2) is arranged between the two rotating wheel assemblies (3) to enable the rotating wheels (331) to keep rotating synchronously.

8. A wheel mechanism capable of improving the rotation stability of a wheelset as claimed in claim 7, characterized in that: The transmission mechanism (2) comprises a transmission shaft (24), one end of the transmission shaft (24) being transmission-connected to one of the rotating wheels (331) in one of the rotating wheel assemblies (3), and the other end of the transmission shaft (24) being transmission-connected to one of the rotating wheels (331) in another rotating wheel assembly (3).

9. A wheel mechanism capable of improving the rotation stability of a wheelset as claimed in claim 8, characterized in that: The transmission mechanism (2) further comprises a rotation drive mechanism (21); the rotation drive mechanism (21) is transmission-connected to the transmission shaft (24).

10. A wheel mechanism capable of improving the rotation stability of a wheelset as claimed in claim 9, characterized in that: The transmission mechanism (2) further comprises a chain (23); a driving sprocket (22) is mounted on the rotation drive mechanism (21); a driven sprocket (25) is mounted on the transmission shaft (24); and the chain (23) is transmission-connected between the driving sprocket (22) and the driven sprocket (25).

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