Connecting rod for axle radial mechanism, axle radial mechanism and railway vehicle

Abstract

The utility model discloses a kind of connecting rod for wheel axle radial mechanism, wheel axle radial mechanism and railway vehicle.The connecting rod is two, each connecting rod includes stem and two connecting hole parts;Two connecting hole parts are connected with the two ends of stem respectively;Stem includes first stem, intermediate stem and second stem connected in turn;Connecting hole part includes connecting portion ontology and elastic hinge sleeve, connecting portion ontology, elastic hinge sleeve are all in cylindrical structure, elastic hinge sleeve is embedded in connecting portion ontology, the center axis of both coincides;Elastic hinge sleeve includes steel inner layer, elastomer layer and steel outer layer from inside to outside in turn;Steel outer layer is in cylindrical shape;The outer surface of elastomer layer is in cylindrical shape;When the center axis of elastic hinge sleeve is in horizontal direction, the outer surface of steel inner layer is in arch bridge type under longitudinal section state, the inner surface of elastomer layer is matched with the outer surface of steel inner layer.The connecting rod is conducive to improving connection strength and rigidity.

Description

Technical Field

[0001] This utility model relates to a connecting rod for a wheel axle radial mechanism, a wheel axle radial mechanism, and a railway vehicle. Background Technology

[0002] The radial mechanism of railway vehicle wheel axles is an important device that ensures the correct position of railway freight car wheel axles during operation, reduces wheel and rail wear, and improves vehicle running performance. The connecting rod is part of the radial mechanism of wheel axles.

[0003] One document reports a radial mechanism for a three-axle bogie of a railway freight car, including a tie rod assembly. This assembly consists of a first tie rod and a second tie rod. The first tie rod is a long rod with a connecting hole in the middle, and the second tie rod is a long rod of the same length as the first tie rod. Mounting holes are provided at both ends of the first and second tie rods. The second tie rod passes through the connecting hole of the first tie rod, forming a cross-shaped connection with it. However, in this document, the second tie rod passing through the connecting hole of the first tie rod is prone to friction, and the mounting hole is directly connected to the load-bearing saddle, indicating that operational reliability needs improvement. Furthermore, the assembly is difficult, which also poses challenges for subsequent maintenance.

[0004] Another document reports a radial mechanism for bogie wheelsets, comprising two intersecting connecting rods. The ends of these connecting rods are pinned to the frame via round pins, and a replaceable elastic material is provided at the junction of the round pins, connecting rods, and frame. However, this elastic material has poor durability, low strength, and poor impact resistance.

[0005] Therefore, it is necessary to further optimize the structure of the connecting rod. Utility Model Content

[0006] In view of this, one object of the present invention is to provide a connecting rod for a wheel axle radial mechanism. The structure of this connecting rod is beneficial to improving its connection strength and rigidity with the U-shaped frame, and improving its impact resistance.

[0007] Another objective of this invention is to provide a wheel and axle radial mechanism.

[0008] Another objective of this utility model is to provide a railway vehicle.

[0009] The present invention achieves the above objectives by adopting the following technical solution.

[0010] On the one hand, this utility model provides a connecting rod for a wheel axle radial mechanism. The connecting rod consists of two rods, which form a cross-shaped structure in use. Each connecting rod includes a rod portion and two connecting holes. The two connecting holes are respectively connected to the two ends of the rod portion.

[0011] The rod portion includes a first rod portion, an intermediate rod portion, and a second rod portion connected in sequence; the first rod portion and the second rod portion are symmetrically arranged; the first rod portion has a first surface and a second surface arranged in parallel, and these two surfaces are perpendicular to the central axis of the connecting hole portion; the intermediate rod portion has a third surface and a fourth surface arranged in parallel, the third surface is configured to be convex relative to the plane where the first surface is located, and the fourth surface is configured to be concave relative to the plane where the second surface is located.

[0012] The connecting hole portion includes a connecting body and an elastic hinge sleeve. Both the connecting body and the elastic hinge sleeve are cylindrical structures. The elastic hinge sleeve is embedded in the connecting body, and their central axes coincide. The elastic hinge sleeve comprises, from the inside out, a steel inner layer, an elastomer layer, and a steel outer layer. The steel outer layer is cylindrical. The outer surface of the elastomer layer is cylindrical. When the central axis of the elastic hinge sleeve is horizontal, the outer surface of the steel inner layer has an arched shape in longitudinal section, and the inner surface of the elastomer layer matches the outer surface of the steel inner layer. This connecting rod structure improves the strength and stiffness, which is beneficial for improving connection reliability, extending service life, and improving impact resistance.

[0013] When in use, the concave fourth surfaces of the middle sections of the two connecting rods are brought close together. This prevents the connecting rods from rubbing against each other during use.

[0014] In this invention, the protrusion direction of the third surface is consistent with the concave direction of the fourth surface.

[0015] In this invention, when the connecting rod is connected to the U-shaped frame, the strength and stiffness of the elastic hinge sleeve with this specific structure are improved, which can enhance the impact resistance. Furthermore, by adjusting the shrinkage of the inner and outer steel layers and the matching elastic body layer, the pre-compression amount and radial and axial stiffness requirements of the elastic hinge sleeve connector can be met. It can also provide different anti-diamond stiffness values ​​for the vibration damping device of railway vehicle (e.g., railway freight car) bogie.

[0016] In this invention, the steel inner layer, the elastomer layer, and the steel outer layer can also be fused together by vulcanization.

[0017] In this invention, both end faces of the inner and outer steel layers are horizontal, while both end faces of the elastomer layer are concave relative to the two end faces of the inner steel layer.

[0018] In this invention, the two connecting rods can be interchanged and are not restricted by direction.

[0019] According to the connecting rod for the radial mechanism of a wheel axle described in this utility model, preferably, the center line of the intermediate rod portion along the length direction coincides with the center line of the first rod portion along the length direction. This can help improve operational reliability during use.

[0020] According to the connecting rod for a radial mechanism of a wheel axle described in this utility model, preferably, the width of the intermediate rod portion is greater than the widths of the first rod portion and the second rod portion. This facilitates the formation of a rod portion having a concave state, a fourth surface, and a convex state, a third surface.

[0021] According to the connecting rod for the radial mechanism of wheel axle described in this utility model, preferably, the length of the intermediate rod portion is greater than the lengths of the first rod portion and the second rod portion.

[0022] According to a specific embodiment of the present invention, the length of the intermediate rod is greater than the length of the first rod, and the length of the intermediate rod is greater than the length of the second rod.

[0023] According to the connecting rod for the radial mechanism of the wheel axle described in this utility model, preferably, the eccentricity of the connecting rod is less than or equal to 15mm. This helps to improve operational reliability.

[0024] According to the connecting rod for the radial mechanism of wheel axle described in this utility model, preferably, the eccentricity of the connecting rod is less than or equal to 10 mm.

[0025] According to a specific embodiment of this utility model, the eccentricity of the connecting rod is 9mm.

[0026] According to the connecting rod for a wheel axle radial mechanism of the present invention, preferably, one end face of the connecting hole is coplanar with the first surface of the first rod, and the other end face of the connecting hole is coplanar with the second surface of the first rod. This is beneficial to improving operational reliability.

[0027] According to the connecting rod for the radial mechanism of a wheel axle described in this utility model, preferably, the rod portion and the connecting portion body are integrally formed. This is beneficial to the stability of the connecting rod structure and improves operational reliability.

[0028] On the other hand, the present invention also provides a wheel axle radial mechanism, which includes a connecting rod for the wheel axle radial mechanism as described above.

[0029] Furthermore, this utility model also provides a railway vehicle, which includes the wheel axle radial mechanism as described above.

[0030] The connecting rod structure for the radial mechanism of the wheel axle of this invention can improve strength and impact resistance, better adapt to existing braking devices, and improve operational reliability. Furthermore, it is easy to assemble. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the connecting rod of the present invention used in the radial mechanism of a wheel axle under operating conditions.

[0032] Figure 2 This is a structural diagram of a connecting rod.

[0033] Figure 3 for Figure 2 A side view diagram.

[0034] Figure 4 This is a schematic diagram of the connecting rod without an elastic hinge sleeve according to this utility model.

[0035] Figure 5 This is a schematic diagram of the connecting rod with an elastic hinge sleeve according to the present invention.

[0036] Figure 6 This is a longitudinal sectional view of the elastic hinge sleeve of this utility model.

[0037] The annotations in the attached figures are explained as follows:

[0038] 211 - First section of the pole, 212 - Middle section of the pole, 213 - Second section of the pole;

[0039] 214 - Connecting hole portion;

[0040] 2141 - Connecting part body; 2142 - Elastic hinge sleeve;

[0041] a-Inner steel layer, b-Elastomer layer, c-Outer steel layer. Detailed Implementation

[0042] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0043] Example 1

[0044] Figure 1 This is a schematic diagram of the connecting rod of the present invention used in the radial mechanism of a wheel axle under operating conditions. Figure 2 This is a structural diagram of a connecting rod. Figure 3 for Figure 2 A side view diagram. Figure 4 This is a schematic diagram of the connecting rod without an elastic hinge sleeve according to this utility model. Figure 5 This is a schematic diagram of the connecting rod with an elastic hinge sleeve according to the present invention. Figure 6 This is a longitudinal sectional view of the elastic hinge sleeve of this utility model.

[0045] In this embodiment, the connecting rod is used in the radial mechanism of the wheel axle to connect the U-shaped frame. For example... Figure 1 As shown, there are two connecting rods, which form a cross-shaped structure when in use.

[0046] like Figures 1 to 5 As shown, each connecting rod includes a rod portion and two connecting hole portions 214. The two connecting hole portions 214 are respectively connected to both ends of the rod portion. The two connecting hole portions 214 are arranged symmetrically.

[0047] The rod section includes a first rod section 211, an intermediate rod section 212, and a second rod section 213 connected sequentially. The first rod section 211 and the second rod section 213 are symmetrically arranged at both ends of the intermediate rod section 212. The first rod section 211 has a first surface and a second surface arranged relatively parallel to each other (these two surfaces are vertically opposite each other in use), and these two surfaces are perpendicular to the central axis of the connecting hole section 214. The intermediate rod section 212 has a third surface and a fourth surface arranged relatively parallel to each other. The third surface is convex relative to the plane containing the first surface, and the fourth surface is concave relative to the plane containing the second surface. In use, the concave fourth surfaces of the two connecting rods are close together.

[0048] The centerline of the intermediate rod 212 along its length coincides with the centerline of the first rod 211 along its length. The width of the intermediate rod 212 is greater than the width of the first rod 211 and the second rod 213. The length of the intermediate rod 212 is greater than the length of the first rod 211 and the second rod 213. The eccentricity of the connecting rod is less than or equal to 15 mm. For example, the eccentricity of the connecting rod is less than or equal to 10 mm. Specifically, the eccentricity of the connecting rod is 9 mm.

[0049] The connecting hole portion 214 includes a connecting body 2141 and an elastic hinge sleeve 2142. The connecting body 2141 has a cylindrical structure. The elastic hinge sleeve 2142 has a cylindrical structure. The elastic hinge sleeve 2142 is embedded in the connecting body 2141, and their central axes coincide. The elastic hinge sleeve 2142, from the inside out (i.e., from the inner surface to the outer surface), includes a steel inner layer a, an elastomer layer b, and a steel outer layer c. When the central axis of the elastic hinge sleeve 2142 is in the horizontal direction, the outer surface of the steel inner layer a has an arched shape in longitudinal section, and the inner surface of the elastomer layer b matches the outer surface of the steel inner layer a. The outer surface of the elastomer layer b is cylindrical. The steel outer layer c is cylindrical.

[0050] One end face of the connecting hole 214 is coplanar with the first surface of the first rod 211, and the other end face of the connecting hole 2142 is coplanar with the second surface of the first rod 211.

[0051] The rod and the connecting body 2141 are integrally formed.

[0052] Example 2

[0053] This embodiment provides a wheel axle radial mechanism, which includes the connecting rod for the wheel axle radial mechanism of Embodiment 1.

[0054] Example 3

[0055] This embodiment provides a bogie that includes the wheel axle radial mechanism described in Embodiment 2.

[0056] Example 4

[0057] This embodiment provides a railway vehicle, particularly a railway freight car, including the wheel axle radial mechanism described in Embodiment 2.

[0058] Example 5

[0059] This embodiment provides a railway vehicle, particularly a railway freight car, including the bogie described in Embodiment 3.

[0060] This utility model is not limited to the above-described embodiments. Any modifications, improvements, or substitutions that can be conceived by those skilled in the art without departing from the essential content of this utility model fall within the scope of this utility model.

Claims

1. A connecting rod for a wheel and axle radial mechanism, characterized in that, The connecting rod consists of two rods, which form a cross-shaped structure when in use. Each connecting rod includes a rod section and two connecting holes, which are respectively connected to the two ends of the rod section. The rod portion includes a first rod portion, an intermediate rod portion, and a second rod portion connected in sequence; the first rod portion and the second rod portion are symmetrically arranged; the first rod portion has a first surface and a second surface arranged in parallel, and these two surfaces are perpendicular to the central axis of the connecting hole portion; the intermediate rod portion has a third surface and a fourth surface arranged in parallel, the third surface is configured to be convex relative to the plane where the first surface is located, and the fourth surface is configured to be concave relative to the plane where the second surface is located. The connecting hole portion includes a connecting body and an elastic hinge sleeve. Both the connecting body and the elastic hinge sleeve are cylindrical structures. The elastic hinge sleeve is embedded in the connecting body, and their central axes coincide. The elastic hinge sleeve includes, from the inside out, a steel inner layer, an elastomer layer, and a steel outer layer. The steel outer layer is cylindrical. The outer surface of the elastomer layer is cylindrical. When the central axis of the elastic hinge sleeve is in the horizontal direction, the outer surface of the steel inner layer is arched in longitudinal section, and the inner surface of the elastomer layer matches the outer surface of the steel inner layer.

2. The connecting rod for a wheel and axle radial mechanism according to claim 1, characterized in that, The centerline of the intermediate rod along its length coincides with the centerline of the first rod along its length.

3. The connecting rod for a wheel axle radial mechanism according to claim 1, characterized in that, The width of the intermediate rod is greater than the width of the first rod and the second rod.

4. The connecting rod for a wheel axle radial mechanism according to claim 1, characterized in that, The length of the intermediate rod is greater than the lengths of the first rod and the second rod.

5. The connecting rod for a wheel axle radial mechanism according to claim 1, characterized in that, The eccentricity of the connecting rod is less than or equal to 15 mm.

6. The connecting rod for a wheel axle radial mechanism according to claim 5, characterized in that, The eccentricity of the connecting rod is less than or equal to 10 mm.

7. The connecting rod for a wheel and axle radial mechanism according to claim 1, characterized in that, One end face of the connecting hole is coplanar with the first surface of the first rod, and the other end face of the connecting hole is coplanar with the second surface of the first rod.

8. The connecting rod for a wheel axle radial mechanism according to claim 1, characterized in that, The rod and the connecting part are integrally formed.

9. A radial mechanism for a wheel and axle, characterized in that, It includes the connecting rod for the wheel axle radial mechanism as described in any one of claims 1 to 8.

10. A railway vehicle, characterized in that, It includes the wheel and axle radial mechanism as described in claim 9.

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