Extension assembly for guide wheel of railway vehicle, guide mechanism, bogie and railway vehicle

Abstract

The utility model discloses an extension assembly for a guide wheel of a railway vehicle, a guide mechanism, a bogie and the railway vehicle, and the extension assembly comprises the guide wheel which is suitable for being in contact with a guide surface of a track beam; and the movable mechanism is connected with the guide wheel to drive the guide wheel to move at least in the height direction so as to be matched with different guide surfaces. The extension assembly designed according to the utility model is used for the guide wheel of the railway vehicle, and can selectively drive the guide wheel to move in the height direction so as to adjust the position of the guide wheel, so that the railway vehicle can be applied to more scenes.

Description

Technical Field

[0001] The utility model relates to the field of rail vehicles, in particular to an extension component for a guide wheel of a rail vehicle, a guide mechanism, a bogie and a rail vehicle. Background Art

[0002] In the related art, rail vehicles generally have front and rear bogies, both of which are provided with guide wheels, and the vehicle is guided by the cooperation between the guide wheels and the track beam. In some existing technologies, the guide wheels provided on the front and rear bogies only satisfy one wheel-rail relationship, which limits the application scenarios of rail vehicles. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to propose an extension assembly for a guide wheel of a rail vehicle. The extension assembly designed according to the utility model is used for the guide wheel of a rail vehicle, which can selectively drive the guide wheel to move in the height direction to adjust the position of the guide wheel, so that the rail vehicle can be used in more scenarios.

[0004] The utility model also provides a guiding mechanism having the extension component.

[0005] The utility model also provides a bogie with the guide mechanism.

[0006] The utility model also provides a rail vehicle with the bogie.

[0007] According to the utility model, the extension assembly for the guide wheel of a rail vehicle comprises: a guide wheel, which is suitable for contacting the guide surface of a track beam; and a movable mechanism, which is connected to the guide wheel to drive the guide wheel to move at least in the height direction to match different guide surfaces.

[0008] According to the extension component of the utility model, the guide wheel is used for the rail vehicle, and its movable mechanism drives the guide wheel to move at least in the height direction, so that the guide wheel can match different guide surfaces, so that the guide wheel can meet various forms of rail beams, enriching the application scenarios of the rail vehicle.

[0009] According to some embodiments of the utility model, the movable mechanism has a switchable first state and a second state; a fixed part is provided on the movable mechanism, and the movable mechanism is connected to a fixed part on the rail vehicle through the fixed part, and a guide wheel connecting part movably connected to the fixed part is also provided on the movable mechanism, and the guide wheel connecting part is rotatably connected to the guide wheel; the movable mechanism is suitable for driving the guide wheel connecting part to move relative to the fixed part so that the movable mechanism switches between the first state and the second state; wherein in the first state, the distance between the fixed part and the guide wheel connecting part in the height direction is D1, and in the second state, the distance between the fixed part and the guide wheel connecting part in the height direction is D2, and satisfies: D1<D2.

[0010] According to some embodiments of the utility model, the movable mechanism includes: an extension frame, which is connected to the fixed part and includes a plurality of connecting rods hinged to each other, wherein the guide wheel connecting part is provided on one of the connecting rods or a hinge point between the connecting rods; a driving member, which includes a driving element and a driving rod, and the driving rod is suitable for moving under the drive of the driving element, the first end of the driving rod is movably connected to the driving element, and the second end of the driving rod is connected to the extension frame to drive the movable mechanism to switch between the first state and the second state.

[0011] According to some embodiments of the utility model, the extension frame includes: a connecting rod mounting seat, which is connected to the fixed part; a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod and a fifth connecting rod; wherein one end of the second connecting rod is hinged to the connecting rod mounting seat, and the other end is hinged to one end of the third connecting rod; the other end of the third connecting rod is hinged to one end of the fifth connecting rod; the other end of the fifth connecting rod is hinged to one end of the fourth connecting rod; the other end of the fourth connecting rod is hinged to one end of the first connecting rod; the other end of the first connecting rod is hinged to the second connecting rod; the guide wheel connecting part is fixedly connected to the third connecting rod; the driving rod is fixedly connected to the fourth connecting rod and is suitable for driving the fourth connecting rod to move in the height direction, so as to drive the guide wheel connecting part to move in the height direction; in the first state, the second connecting rod and the third connecting rod are located in the same straight line and are respectively perpendicular to the driving rod; in the second state, the second connecting rod is parallel to the driving rod, and the third connecting rod is perpendicular to the driving rod.

[0012] The following briefly describes a guide mechanism for a rail vehicle according to an embodiment of the second aspect of the utility model.

[0013] The guide mechanism for a rail vehicle according to the utility model comprises an extension assembly and a guide frame structure for a rail vehicle guide wheel according to any one of the above embodiments; wherein the extension assembly is installed on the guide frame structure. Since the guide mechanism according to the utility model is provided with the extension assembly of the above embodiment, the guide mechanism can drive the guide wheel to move in the height direction, so that the rail vehicle can match different guide surfaces.

[0014] According to some embodiments of the present invention, the extension assembly is configured in plurality, and the plurality of extension assemblies at least include a first extension assembly and a second extension assembly which are spaced apart and symmetrically arranged in a width direction of the rail vehicle.

[0015] According to some embodiments of the present invention, the plurality of extension components further include a third extension component spaced apart from the first extension component in the direction of travel of the rail vehicle and a fourth extension component spaced apart from the second extension component in the direction of travel of the rail vehicle.

[0016] The following briefly describes a bogie for a rail vehicle according to an embodiment of the third aspect of the utility model.

[0017] The bogie for rail vehicles according to the utility model comprises the guide mechanism and axle for rail vehicles according to any one of the above embodiments; the guide frame structure of the guide mechanism is connected to the axle. Since the bogie according to the utility model is provided with the guide mechanism of the above embodiment, the bogie has the same advantages as the guide mechanism.

[0018] According to some embodiments of the utility model, the bogie also includes: a running wheel and a steering rod; wherein the running wheel is rotatably arranged at both ends of the axle; the guide frame structure is rotatably connected to the axle, one end of the steering rod is connected to the guide frame structure, and the other end is connected to the running wheel; the guide wheel is liftably arranged on the guide frame structure through the movable mechanism, the guide wheel drives the guide frame structure to rotate relative to the axle, the guide frame structure rotates to drive the steering rod to move, and the steering rod moves to drive the running wheel to steer.

[0019] According to some embodiments of the utility model, a connecting arm is provided on each of the traveling wheels, and the connecting arms of the two traveling wheels are linked via a steering arm, and the connecting arm is hinged to the steering rod.

[0020] The following briefly describes a rail vehicle according to an embodiment of the fourth aspect of the utility model.

[0021] The rail vehicle according to the utility model comprises the bogie for rail vehicles described in any one of the above embodiments. Since the rail vehicle according to the utility model is provided with the bogie described in the above embodiments, the rail vehicle can be applied in more scenarios and has better driving comfort.

[0022] In summary, according to the extension assembly of the utility model, which is used for the guide wheel of the rail vehicle, its movable mechanism drives the guide wheel to move at least in the height direction, so that the guide wheel can match different guide surfaces, so that the guide wheel can meet various forms of rail beams, enriching the application scenarios of rail vehicles. Among them, the extension assembly including five connecting rods can make the guide wheel translate in the height direction and the horizontal direction at the same time, which can be applicable to the outer guide wheel-rail relationship of the concave beam surface, and can also be applicable to the inner guide wheel-rail relationship of the convex beam surface.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 It is a schematic diagram of the overall structure of the guide mechanism according to an embodiment of the utility model.

[0026] Figure 2 yes Figure 1 Structural schematic diagram when the medium structure is applied to a concave beam surface.

[0027] Figure 3 yes Figure 1 Structural schematic diagram when the medium structure is applied to a convex beam surface.

[0028] Figure 4 It is a schematic diagram of the structure of the guide frame and the extension assembly according to an embodiment of the utility model.

[0029] Figure 5 yes Figure 4 Schematic diagram showing that part of the extended components of the middle structure are in the first state and another part of the extended components are in the second state.

[0030] Figure 6 It is a structural schematic diagram of the extension component according to an embodiment of the utility model when it is in the second state.

[0031] Figure 7 It is a structural schematic diagram of the extension component according to an embodiment of the utility model when it is in the first state.

[0032] Figure 8It is a schematic diagram of the distance between the guide wheel and the guide frame structure when the extension assembly according to an embodiment of the utility model is in the first state.

[0033] Fig. 9 It is a schematic diagram of the distance between the guide wheel and the guide frame structure when the extension assembly according to an embodiment of the utility model is in the second state.

[0034] Fig.10 It is a schematic diagram of the guide frame structure according to an embodiment of the utility model.

[0035] Fig.11 yes Figure 1 Top view of the structure.

[0036] Reference numerals:

[0037] 1. Bogie; 1001. Concave beam surface; 1002. Convex beam surface;

[0038] 10. Axle; 11. Traveling wheels;

[0039] 20. Guide frame structure; 21. Steering wheel; 22. Connecting part;

[0040] 30. Activity organization;

[0041] 311, connecting rod mounting seat; 312, second connecting rod; 3121, guide wheel connecting portion; 313, first connecting rod; 314, third connecting rod; 315, fifth connecting rod;

[0042] 32, driving member; 321, driving element; 322, driving rod; 3221, fourth connecting rod;

[0043] 40. guide wheel; 41. first guide wheel; 42. second guide wheel;

[0044] 50. Steering rod; 60. Steering arm; 70. Connecting arm. DETAILED DESCRIPTION

[0045] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships 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 referred device or element 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.

[0047] 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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] In the related art, rail vehicles generally have front and rear bogies, both of which are provided with guide wheels, and the vehicle is guided by the cooperation between the guide wheels and the track beam. In some existing technologies, the guide wheels provided on the front and rear bogies only satisfy one wheel-rail relationship, which limits the application scenarios of rail vehicles.

[0051] Reference below Figure 1-Figure 11 An extension assembly for a guide wheel of a railway vehicle according to an embodiment of the utility model is described.

[0052] like Figure 1-Figure 7 As shown, the extension assembly according to the utility model is used for the guide wheel of the rail vehicle and includes: a guide wheel 40 and a movable mechanism 30, the guide wheel 40 is suitable for contacting the guide surface of the track beam; the movable mechanism 30 is connected to the guide wheel 40 to drive the guide wheel 40 to move at least in the height direction to match different guide surfaces. Specifically, the movable mechanism 30 is suitable for driving the guide wheel 40 to move in the height direction, thereby changing the position of the guide wheel 40, so that the rail vehicle can travel on more types of road surfaces, such as Figure 2 As shown, the concave beam surface 1001 is formed with a guide groove, and the movable mechanism 30 can drive the guide wheel 40 to move downward so that the guide wheel 40 can contact the guide surface of the guide groove to achieve the guiding effect on the rail vehicle; it can also be as follows Figure 3 As shown, a guide protrusion is formed on the convex beam surface 1002. At this time, the movable mechanism 30 can drive the guide wheel 40 to move upward, so that the guide wheel 40 can contact the guide surface of the guide protrusion to achieve the guidance of the rail vehicle. In addition, the movement of the guide wheel 40 in the height direction can also make the rail vehicle match the guide surface of different heights or make the rail vehicle run on the road without a rail beam, enriching the application scenarios of the rail vehicle.

[0053] According to the extension component of the utility model, the guide wheel of the rail vehicle is used, and its movable mechanism 30 drives the guide wheel 40 to move at least in the height direction, so that the guide wheel 40 can match different guide surfaces, so that the guide wheel 40 can meet various forms of rail beams, enriching the application scenarios of rail vehicles.

[0054] According to some embodiments of the present invention, Figure 5 , Figure 8 , Fig. 9 As shown, the movable mechanism 30 has a switchable first state and a second state; a fixing part is provided on the movable mechanism 30, and the movable mechanism 30 is connected to the fixed part on the rail vehicle through the fixing part, and a guide wheel connecting part 3121 movably connected to the fixing part is also provided on the movable mechanism 30, and the guide wheel connecting part 3121 is rotatably connected to the guide wheel 40; the movable mechanism 30 is suitable for driving the guide wheel connecting part 3121 to move relative to the fixing part so that the movable mechanism 30 switches between the first state and the second state; wherein in the first state, the distance between the fixing part and the guide wheel connecting part 3121 in the height direction is D1, and in the second state, the distance between the fixing part and the guide wheel connecting part 3121 in the height direction is D2, and satisfies: D1<D2.

[0055] Specifically, during the process of the movable mechanism 30 switching from the first state to the second state, the movable mechanism 30 expands so that the guide wheel connecting part 3121 is away from the fixed part, thereby driving the guide wheel 40 to move downward; and during the process of the movable mechanism 30 switching from the second state to the first state, the movable mechanism 30 contracts so that the guide wheel connecting part 3121 is close to the fixed part, thereby driving the guide wheel 40 to move upward.

[0056] According to some embodiments of the present invention, Figure 6 As shown, the movable mechanism 30 includes an extension frame and a driving member 32. The extension frame is connected to the fixed part and includes a plurality of connecting rods hinged to each other, wherein a guide wheel connecting portion 3121 is provided on one of the connecting rods or a hinge point between the connecting rods; the driving member 32 includes a driving element 321 and a driving rod 322. The driving rod 322 is suitable for moving under the drive of the driving element 321. The first end of the driving rod 322 is movably connected to the driving element 321, and the second end of the driving rod 322 is connected to the extension frame to drive the movable mechanism 30 to switch between the first state and the second state.

[0057] Specifically, the driving member 32 is suitable for driving the extension frame to expand or contract. When the extension frame gradually expands, the movable mechanism 30 of the extension assembly switches from the first state to the second state. When the extension frame gradually contracts, the movable mechanism 30 of the extension assembly switches from the second state to the first state. The driving member 32 drives the extension frame to expand or contract, and the expansion or contraction of the extension frame can drive the guide wheel connection part 3121 to move, thereby driving the guide wheel 40 to move. The driving member 32 is provided to make the expansion or contraction of the extension frame controllable, and the position of each guide wheel 40 can be adjusted during the travel of the rail vehicle, so that the rail vehicle can naturally transition between scenes. Figure 6 As shown, the driving member 32 includes a driving element 321 and a driving rod 322. The first end of the driving rod 322 is connected to the driving element 321 and moves in the height direction. The second end of the driving rod 322 is connected to the extension frame to drive the extension frame to switch between the first state and the second state under the drive of the driving element 321.

[0058] In some embodiments, the driving element 321 may be a driving motor or a cylinder.

[0059] According to some embodiments of the present invention, Figure 6As shown, the extension frame includes a connecting rod mounting seat 311, a first connecting rod 313, a second connecting rod 312, a third connecting rod 314, a fourth connecting rod 3221 and a fifth connecting rod 315. The connecting rod mounting seat 311 is connected to the fixing portion; one end of the second connecting rod 312 is hinged to the connecting rod mounting seat 311, and the other end is hinged to one end of the third connecting rod 314; the other end of the third connecting rod 314 is hinged to one end of the fifth connecting rod 315; the other end of the fifth connecting rod 315 is hinged to one end of the fourth connecting rod 3221; the other end of the fourth connecting rod 3221 is hinged to one end of the first connecting rod 313. ; The other end of the first connecting rod 313 is hinged to the second connecting rod 312; the guide wheel connecting part 3121 is fixedly connected to the third connecting rod 314; the driving rod 322 is fixedly connected to the fourth connecting rod 3221 and is suitable for driving the fourth connecting rod 3221 to move in the height direction, so as to drive the guide wheel connecting part 3121 to move in the height direction; in the first state, the second connecting rod 312 and the third connecting rod 314 are located in the same straight line and are respectively perpendicular to the driving rod 322; in the second state, the second connecting rod 312 is parallel to the driving rod 322, and the third connecting rod 314 is perpendicular to the driving rod 322.

[0060] In some embodiments, the fourth connecting rod 3221 extends in the horizontal direction, and the two ends of the fourth connecting rod 3221 in the horizontal direction are respectively hinged with the other end of the third connecting rod 314 and the other end of the fifth connecting rod 315. Specifically, the driving element 321 drives the driving rod 322 to extend or retract in the height direction, which can realize the follow-up of the third connecting rod 314 and the fifth connecting rod 315, and at the same time drive the rise and fall of the guide wheel 40, and can also drive the first guide wheel 41 and the second guide wheel 42 to move closer to or away from each other. In the first state, when the second connecting rod 312 moves to be in the same straight line with the third connecting rod 314, the second connecting rod 312 and the third connecting rod 314 are respectively perpendicular to the driving rod 322, and the extension frame is in the limit position of contraction, and the extension frame cannot continue to contract; in the second state, when the second connecting rod 312 moves to be parallel to the driving rod 322 and the third connecting rod 314 is perpendicular to the driving rod 322, the extension frame is in the limit position of expansion, and the extension frame cannot continue to expand.

[0061] In some embodiments, the third link 314 is generally parallel to the fourth link 3221 .

[0062] The following briefly describes the guide mechanism for a rail vehicle according to the present utility model.

[0063] like Figure 1-Figure 7As shown, the guide mechanism according to the utility model is used for a rail vehicle and includes an extension assembly and a guide frame structure 20 for a rail vehicle guide wheel as described in any one of the above embodiments; wherein the extension assembly is installed on the guide frame structure. Here, the extension assembly is arranged on the guide frame structure 20, and a guide wheel 40 is arranged on the extension assembly and is suitable for driving the guide wheel 40 to move in the height direction to match different guide surfaces. Since the guide mechanism according to the utility model is provided with the extension assembly of the above embodiment, the guide mechanism can drive the guide wheel 40 to move in the height direction, so that the rail vehicle can match different guide surfaces.

[0064] According to some embodiments of the utility model, the extension assembly is constructed in multiples, and the multiple extension assemblies at least include a first extension assembly and a second extension assembly spaced and symmetrically arranged in the width direction of the rail vehicle. In some embodiments, the guide mechanism can be provided with multiple guide wheels 40. During the actual operation of the rail vehicle, the extension assembly can drive the multiple guide wheels 40 to move toward the guide frame structure 20, so that the rail vehicle can travel on the concave beam surface 1001; the extension assembly can drive the multiple guide wheels 40 to move in a direction away from the guide frame structure 20, so that the rail vehicle can travel on the convex beam surface 1002 or a flat road surface, increasing the usable scenarios of the rail vehicle.

[0065] In some embodiments, the rail vehicle may be provided with multiple guide mechanisms, each of which may be provided with multiple guide wheels 40, and each guide wheel 40 corresponds to an extension component, thereby achieving independent control of each guide wheel 40, allowing the rail vehicle to travel on a variety of road surfaces, thereby increasing the use scenarios of the rail vehicle.

[0066] In some embodiments, the first extension assembly and the second extension assembly located on both sides of the rail vehicle in the width direction are respectively connected to the first guide wheel 41 and the second guide wheel 42 to selectively control the first guide wheel 41 to move toward or away from the guide frame structure 20, or to control the second guide wheel 42 to move toward or away from the guide frame structure 20.

[0067] In some embodiments, Figure 5 , Figure 8 , Fig. 9 As shown, in the first state, the distance between the first guide wheel 41 and the second guide wheel 42 is L1, and in the second state, the distance between the first guide wheel 41 and the second guide wheel 42 is L2; ​​and the following is satisfied: L1<L2. During the process of the movable mechanism 30 of the extension assembly switching from the first state to the second state, the movable mechanism 30 drives the first guide wheel 41 and the second guide wheel 42 to move in a direction away from each other, and during the process of the movable mechanism 30 of the extension assembly switching from the second state to the first state, the movable mechanism 30 drives the first guide wheel 41 and the second guide wheel 42 to move in a direction close to each other.

[0068] In some embodiments, when the movable mechanism 30 of the extension component is switched from the first state to the second state, the first guide wheel 41 and the second guide wheel 42 move in a direction away from each other and away from the guide frame structure 20; when the movable mechanism 30 of the extension component is switched from the second state to the first state, the first guide wheel 41 and the second guide wheel 42 move in a direction close to each other and close to the guide frame structure 20.

[0069] According to some embodiments of the utility model, the plurality of extension components further include a third extension component spaced apart in the direction of travel of the rail vehicle relative to the first extension component and a fourth extension component spaced apart in the direction of travel of the rail vehicle relative to the second extension component. In some embodiments, the first extension component and the second extension component are a group of extension components, and the third extension component and the fourth extension component are another group of extension components. In the moving direction of the rail vehicle, the guide wheel 40 generally includes a front guide wheel and a rear guide wheel, the front guide wheel is connected to the above-mentioned group of extension components, and the rear guide wheel is connected to the above-mentioned other group of extension components.

[0070] When the rail vehicle moves forward, only the front guide wheel participates in the guidance. At this time, the third extension component and the fourth extension component connected to the rear guide wheel can drive the rear guide wheel to move toward the guide frame structure 20 to retract the rear guide wheel. When the rail vehicle moves backward, only the rear guide wheel participates in the guidance. At this time, the first extension component and the second extension component connected to the front guide wheel can drive the front guide wheel to move toward the guide frame structure 20 to retract the front guide wheel. The setting of the extension component enables the guiding mechanism to reduce the number of guide wheels 40 participating in the guiding while guiding. By reducing the number of guide wheels 40 in contact with the track beam, it is avoided that too many guide wheels 40 transmit too much road excitation, thereby reducing the vibration transmitted to the rail vehicle body and improving driving comfort.

[0071] In some embodiments, the first extension element, the second extension element, the third extension element and the fourth extension element are independently switched between the first state and the second state.

[0072] In some embodiments, the one group of extension components and the other group of extension components are independently switched between the first state and the second state.

[0073] The bogie 1 for a rail vehicle according to the present utility model is briefly described below.

[0074] According to some embodiments of the present invention, Figure 10-11As shown, the bogie 1 for a rail vehicle comprises the guide mechanism and the axle 10 for a rail vehicle according to any one of the above embodiments; the guide frame structure 20 of the guide mechanism is connected to the axle 10, and the guide wheel 40 can move in the height direction driven by the movable mechanism 30, so that the rail vehicle can be applied to different tracks. Since the bogie 1 according to the utility model is provided with the guide mechanism of the above embodiment, the bogie 1 has the same advantages as the guide mechanism.

[0075] According to some embodiments of the utility model, the bogie 1 further includes a running wheel 11 and a steering rod 50; wherein the running wheel 11 is rotatably arranged at both ends of the axle 10; the guide frame structure is rotatably connected to the axle 10, one end of the steering rod 50 is connected to the guide frame structure, and the other end is connected to the running wheel 11; the guide wheel 40 is movably arranged on the guide frame structure through the movable mechanism 30, the guide wheel 40 drives the guide frame structure to rotate relative to the axle 10, the guide frame structure rotates to be suitable for driving the steering rod 50 to move, and the steering rod 50 moves to drive the running wheel 11 to turn. Here, the running wheel 11 is rotatably arranged on the axle 10, the guide frame structure 20 can rotate relative to the axle 10 and the guide frame structure 20 is connected to the running wheel 11 through the steering rod 50, the guide wheel 40 drives the guide frame structure 20 to move after contacting the guide surface at the curve, and the guide frame structure 20 drives the steering rod 50 to move, thereby driving the running wheel 11 to turn.

[0076] In some embodiments, Fig.10 As shown, the guide frame structure 20 is in an I-shape as a whole, and a steering wheel 21 is provided thereon to be rotatably connected to the axle 10 . A connecting portion 22 is also provided on the guide frame structure 20 to be connected to the steering tie rod 50 .

[0077] According to some embodiments of the present invention, Fig.11 As shown, a connecting arm 70 is provided on each running wheel 11 , and the connecting arms 70 of two running wheels 11 are linked via a steering arm 60 , and the connecting arms 70 are hinged to the steering tie rod 50 .

[0078] In some embodiments, a connecting arm 70 is connected between the steering arm 60 and the steering tie rod 50 , and the connecting arm 70 is hinged to the steering arm 60 and the steering tie rod 50 respectively to transmit the rotation tendency of the guide frame structure 20 to the steering arm 60 , and then to the walking wheel 11 .

[0079] In some embodiments, a connecting arm 70 is connected between the steering arm 60 and the running wheel 11 , and the connecting arm 70 is hinged to the steering arm 60 and the running wheel 11 respectively to transmit the rotation tendency of the guide frame structure 20 to the running wheel 11 .

[0080] The rail vehicle according to the utility model is briefly described below.

[0081] The rail vehicle according to the utility model comprises the guide mechanism described in any one of the above embodiments. Since the rail vehicle according to the utility model is provided with the guide mechanism described in the above embodiments, the rail vehicle can be applied in more scenarios and has better driving comfort.

[0082] In summary, according to the extension assembly of the utility model, the guide wheel 40 of the rail vehicle is used, and its movable mechanism 30 drives the guide wheel 40 to move at least in the height direction, so that the guide wheel 40 can match different guide surfaces, so that the guide wheel can meet various forms of rail beams, enriching the application scenarios of rail vehicles. Among them, the extension assembly including the five-link can make the guide wheel 40 translate in the height direction and the horizontal direction at the same time, which can be applicable to the outer guide wheel-rail relationship of the concave beam surface 1001, and can also be applicable to the inner guide wheel-rail relationship of the convex beam surface 1002.

[0083] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0084] Although embodiments of the present invention have been shown and described above, changes, modifications, substitutions and variations may be made to the embodiments described above.

Claims

1. An extension assembly for a rail vehicle guide wheel, characterized in that: include: A guide wheel (40), wherein the guide wheel (40) is adapted to contact a guide surface of the track beam; A movable mechanism (30) is connected to the guide wheel (40) to drive the guide wheel (40) to move at least in a height direction to match different guide surfaces.

2. The extension assembly for a rail vehicle guide wheel according to claim 1, characterized in that: The movable mechanism (30) has a switchable first state and a second state; The movable mechanism (30) is provided with a fixing part, and the movable mechanism (30) is connected to a fixed part on the rail vehicle through the fixing part. The movable mechanism (30) is also provided with a guide wheel connecting part (3121) movably connected to the fixing part, and the guide wheel connecting part (3121) is rotatably connected to the guide wheel (40); The movable mechanism (30) is suitable for driving the guide wheel connecting portion (3121) to move relative to the fixed portion, so that the movable mechanism (30) switches between the first state and the second state; wherein In the first state, the distance between the fixing portion and the guide wheel connecting portion (3121) in the height direction is D1, and in the second state, the distance between the fixing portion and the guide wheel connecting portion (3121) in the height direction is D2, and satisfies: D1<D2.

3. The extension assembly for a rail vehicle guide wheel according to claim 2, characterized in that: The movable mechanism (30) comprises: An extension frame, the extension frame is connected to the fixing portion and comprises a plurality of connecting rods hinged to each other, wherein the guide wheel connecting portion (3121) is arranged on one of the connecting rods or on a hinge point between the connecting rods; A driving member (32), wherein the driving member (32) comprises a driving element (321) and a driving rod (322), wherein the driving rod (322) is adapted to move under the drive of the driving element (321), wherein a first end of the driving rod (322) is movably connected to the driving element (321), and a second end of the driving rod (322) is connected to the extension frame to drive the movable mechanism (30) to switch between the first state and the second state.

4. The extension assembly for a rail vehicle guide wheel according to claim 3, characterized in that: The extended framework includes: A connecting rod mounting seat (311), wherein the connecting rod mounting seat (311) is connected to the fixing portion; A first connecting rod (313), a second connecting rod (312), a third connecting rod (314), a fourth connecting rod (3221) and a fifth connecting rod (315); wherein One end of the second connecting rod (312) is hinged to the connecting rod mounting seat (311), and the other end is hinged to one end of the third connecting rod (314); the other end of the third connecting rod (314) is hinged to one end of the fifth connecting rod (315); the other end of the fifth connecting rod (315) is hinged to one end of the fourth connecting rod (3221); the other end of the fourth connecting rod (3221) is hinged to one end of the first connecting rod (313); the other end of the first connecting rod (313) is hinged to the second connecting rod (312); The guide wheel connecting portion (3121) is fixedly connected to the third connecting rod (314); The driving rod (322) is fixedly connected to the fourth connecting rod (3221) and is suitable for driving the fourth connecting rod (3221) to move in the height direction, so as to drive the guide wheel connecting part (3121) to move in the height direction; In the first state, the second connecting rod (312) and the third connecting rod (314) are located in the same straight line and are respectively perpendicular to the driving rod (322); In the second state, the second connecting rod (312) is parallel to the driving rod (322), and the third connecting rod (314) is perpendicular to the driving rod (322).

5. A guide mechanism for a rail vehicle, characterized in that: It comprises an extension assembly and a guide frame structure (20) for a rail vehicle guide wheel according to any one of claims 1 to 4; wherein The extension assembly is mounted on the guide frame structure (20).

6. The guide mechanism for a rail vehicle according to claim 5, characterized in that: The extension assembly is configured in plurality, and the plurality of extension assemblies at least include a first extension assembly and a second extension assembly which are spaced apart and symmetrically arranged in the width direction of the rail vehicle.

7. The guide mechanism for a rail vehicle according to claim 6, characterized in that: The plurality of extension components further include a third extension component spaced apart from the first extension component in the direction of travel of the rail vehicle and a fourth extension component spaced apart from the second extension component in the direction of travel of the rail vehicle.

8. A bogie (1) for a rail vehicle, characterized in that: It comprises a guide mechanism and an axle (10) for a rail vehicle according to any one of claims 5 to 7; a guide frame structure (20) of the guide mechanism is connected to the axle (10).

9. The bogie (1) for a rail vehicle according to claim 8, characterized in that Also includes: Traveling wheels (11) and a steering tie rod (50); wherein The running wheels (11) are rotatably arranged at both ends of the vehicle bridge (10); The guide frame structure is rotatably connected to the axle (10); one end of the steering tie rod (50) is connected to the guide frame structure, and the other end is connected to the running wheel (11); The guide wheel (40) is liftably arranged on the guide frame structure through the movable mechanism (30); the guide wheel (40) drives the guide frame structure to rotate relative to the axle (10); the guide frame structure rotates to drive the steering rod (50) to move; the steering rod (50) moves to drive the walking wheel (11) to steer.

10. The bogie (1) for a rail vehicle according to claim 9, characterized in that A connecting arm (70) is provided on each of the running wheels (11), and the connecting arms (70) of the two running wheels (11) are linked via a steering arm (60), and the connecting arm (70) is hinged to the steering tie rod (50).

11. A rail vehicle, characterized in that: It comprises a bogie (1) for a rail vehicle according to any one of claims 8-10.

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