High stability bogie

Abstract

The utility model relates to the technical field of bogie, concretely is a kind of high stability bogie, including framework, axle shaft and the wheel being set on axle shaft being rotatedly installed on framework, limiting key is arranged between the axle shaft and the wheel for limiting the relative rotation of both, two pressing mechanisms are arranged on the axle shaft for limiting the both ends of wheel.The high stability bogie, by setting limiting key, the relative rotation between axle shaft and wheel can be limited, so that axle shaft and wheel can rotate synchronously, by setting pressing mechanism, the both ends of wheel can be limited, and the problem of transverse stiffness between wheel and axle shaft being too high can be avoided, to avoid abrasion and deformation between wheel and track when turning.

Description

Technical Field

[0001] This utility model relates to the field of bogie technology, specifically a high-stability bogie. Background Technology

[0002] The bogie is the running gear of a rail vehicle, serving functions such as supporting the car body, transmitting loads, mitigating wheel-rail impacts, and implementing braking. Its parameters directly affect the stability of vehicle operation and ride comfort. The bogie consists of the frame, wheelsets, axle boxes, suspension system, and braking system.

[0003] Traditional bogies mostly use interference fits to fix the wheel and axle together, resulting in excessive lateral stiffness between the wheel and axle. This leads to high friction between the outer wheel and the track during cornering, causing severe wear and deformation. Therefore, we propose a high-stability bogie. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a high-stability bogie that solves the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-stability bogie includes a frame, an axle rotatably mounted on the frame, and wheels disposed on the axle. A limiting key is provided between the axle and the wheel to restrict their relative rotation. Two clamping mechanisms are provided on the axle for limiting the two ends of the wheel.

[0006] Furthermore, the clamping mechanism includes two locking rings, which are symmetrically arranged at both ends of the wheel, and the inner circumferential wall of the locking ring is interference-fitted with the axle, and there is a gap between the locking ring and the wheel.

[0007] Furthermore, each of the two locking rings has a groove at one end facing the other, and a first connecting ring and a second connecting ring are respectively embedded in the two grooves. The first connecting ring and the second connecting ring are both sleeved on the axle, and the first connecting ring and the second connecting ring are respectively in contact with the two end faces of the wheel.

[0008] Furthermore, both the first connecting ring and the second connecting ring include two rigid outer frames, with an elastomer filling the space between the two rigid outer frames, and a gap between the two rigid outer frames.

[0009] Furthermore, the outer peripheral wall of the axle is integrally formed with a fixing ring, the outer peripheral wall of the fixing ring is fitted with the inner peripheral wall of the wheel, the outer peripheral wall of the fixing ring is provided with a first keyway, the inner peripheral wall of the wheel is provided with a second keyway, and the limiting key is embedded between the first keyway and the second keyway.

[0010] Furthermore, a second clearance groove is provided at one end of the wheel, one end of the first keyway is connected to the outside of the fixing ring, and one end of the second keyway is connected to the second clearance groove.

[0011] Furthermore, it also includes a second limit ring and a first limit ring; The inner circumference of the first limiting ring is embedded in the axle, and one end face of the first limiting ring is in contact with one end of the limiting key. The outer circumference of the second limiting ring is embedded in the second clearance groove, and one end of the second limiting ring is in contact with one end of the limiting key.

[0012] Furthermore, one end of the second connecting ring is in contact with the inner wall of the first relief groove, the inner wall of the second relief groove, one end face of the limiting key, and the first and second limiting rings.

[0013] Furthermore, both the second limiting ring and the first limiting ring include a rigid outer frame, the rigid outer frame is filled with an elastomer, and one side of the rigid outer frame has an opening.

[0014] By employing the above technical solution, this utility model provides a highly stable bogie. It possesses at least the following beneficial effects: This high-stability bogie, by setting limit keys, can limit the relative rotation between the axle and the wheel, so that the axle and the wheel can rotate synchronously. By setting clamping mechanism, the two ends of the wheel can be limited, and the problem of excessive lateral stiffness between the wheel and the axle can be avoided, thus preventing wear and deformation between the wheel and the track when cornering. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application: Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is an exploded view of some structures in an embodiment of the present utility model; Figure 3 This is a cross-sectional view of the axle and wheel in an embodiment of this utility model; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the first and second clearance grooves in an embodiment of the present invention.

[0016] In the diagram: 1. Frame; 2. Axle; 201. Fixing ring; 202. First keyway; 203. First annular groove; 204. First clearance groove; 3. Wheel; 301. Second keyway; 302. Second annular groove; 303. Second clearance groove; 4. Limiting key; 5. Second limiting ring; 6. First limiting ring; 7. First connecting ring; 8. Second connecting ring; 9. Locking ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-5 The present invention provides a technical solution as follows: A high-stability bogie includes a frame 1, an axle 2 rotatably mounted on the frame 1, and wheels 3 mounted on the axle 2. Each axle 2 has two wheels 3, and the two wheels 3 rotate synchronously when the axle 2 rotates. Currently, in this type of bogie, the wheels and axles are fixedly connected by an interference fit, which results in excessive lateral stiffness between the wheels and the axle. When cornering, the friction between the outer side of the wheel 3 and the track is large, which easily leads to severe wear and deformation.

[0019] Therefore, in this embodiment, the outer peripheral wall of the axle 2 is integrally formed with a fixing ring 201, and the axle center of the wheel 3 is provided with an insertion hole that matches the fixing ring 201. After the fixing ring 201 is inserted into the insertion hole, its outer peripheral wall will fit against the inner peripheral wall of the insertion hole, preventing relative radial movement between the axle 2 and the wheel 3. The outer peripheral wall of the fixing ring 201 is provided with a first keyway 202, and the inner peripheral wall of the insertion hole of the wheel 3 is provided with a second keyway 301. A limiting key 4 is provided between the first keyway 202 and the second keyway 301. The fixing ring 201 and the wheel 3 are limited by the limiting key 4 to prevent relative rotation between them.

[0020] Combination Figure 5 As shown, one end of the retaining ring 201 is flush with the end face of the wheel 3, and the other end is relatively shorter than the other end face of the wheel 3 to form a first clearance groove 204. A second clearance groove 303 is formed at one end of the wheel 3, and the inner circumference of the second clearance groove 303 communicates with a through hole. One end of the first keyway 202 extends outward from the retaining ring 201 and communicates with the first clearance groove 204. One end of the second keyway 301 communicates with the second clearance groove 303. This facilitates assembly and allows relative axial movement between the axle 2 and the wheel 3, overcoming the problem of excessive lateral stiffness.

[0021] It also includes a second limiting ring 5 and a first limiting ring 6. A first annular groove 203 is formed on the outer peripheral wall of the axle 2. The inner circumference of the first limiting ring 6 can be embedded into the first annular groove 203. After embedding, the outer peripheral wall of the first limiting ring 6 extends into the through hole, and one end face of it fits against one end of the limiting key 4, supporting and limiting one end of the limiting key 4. A second annular groove 302 is formed on the inner peripheral wall of the second clearance groove 303. The second limiting ring 5 can be embedded into the second annular groove 302. The inner peripheral wall of the second limiting ring 5 extends into the through hole, and after the second limiting ring 5 is embedded into the second annular groove 302, one end of it fits against one end of the limiting key 4. Through the cooperation of the first limiting ring 6 and the second limiting ring 5, the support and limiting effect on the limiting key 4 can be improved, making the limiting key 4 more stable.

[0022] The first clearance groove 204 and the second clearance groove 303 facilitate the installation of the first limiting ring 6 and the second limiting ring 5. Both the first limiting ring 6 and the second limiting ring 5 have openings, making them arc-shaped structures that are not 360°. During installation, they can deform to facilitate entry into the first annular groove 203 and the second annular groove 302.

[0023] Both ends of the wheel 3 are equipped with clamping mechanisms to improve the stability of the structure consisting of the axle 2, wheel 3, and limit key 4. The clamping mechanisms consist of a first connecting ring 7, a second connecting ring 8, and two locking rings 9. The first connecting ring 7 and the second connecting ring 8 are located at opposite ends of the wheel 3. Both the first connecting ring 7 and the second connecting ring 8 are fitted onto the axle 2 and locked in place by the two locking rings 9. The inner circumferential wall of the locking ring 9 has an interference fit with the axle 2, ensuring the connection strength and synchronization between the locking ring 9 and the axle 2. The opposite ends of the two locking rings 9 have grooves, and the ends of the first connecting ring 7 and the second connecting ring 8 furthest from the wheel 3 are respectively embedded in the two grooves.

[0024] Specifically, the first connecting ring 7 has a relatively regular shape. One end of it fits tightly against one end face of the wheel 3 and one end face of the fixing ring 201, while the other end fits tightly against the inner wall of the groove in one of the locking rings 9. One end of the second connecting ring 8 fits tightly against the inner wall of the groove in the other locking ring 9, while the other end has a stepped structure to accommodate the shapes of the axle 2 and the wheel 3. Part of the stepped structure fits tightly against the end face of the wheel 3, and part extends into the first clearance groove 204 and the second clearance groove 303. It fits tightly against the inner wall of the first clearance groove 204, the inner wall of the second clearance groove 303, one end face of the limiting key 4, and the first limiting ring 6 and the second limiting ring 5, making the structure more compact and stable.

[0025] The first limiting ring 6, the second limiting ring 5, the first connecting ring 7, and the second connecting ring 8 are all composed of a rigid outer frame and an elastic body filled between the rigid outer frame. The rigid outer frame is made of the same high-strength alloy material as the axle 2, and the elastic body is made of polyurethane engineering plastic. The rigid outer frame has an opening on one side, or is composed of two non-contacting structures, giving it a certain deformation capacity in the axial direction. The locking ring 9 has a certain gap between the end near the wheel 3 and the end face of the wheel 3 to reduce the lateral stiffness between the wheel 3 and the axle 2.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-stability bogie, comprising a frame (1), an axle (2) rotatably mounted on the frame (1), and wheels (3) disposed on the axle (2), characterized in that, A limiting key (4) is provided between the axle (2) and the wheel (3) to restrict their relative rotation. Two clamping mechanisms are provided on the axle (2) to limit the two ends of the wheel (3). The clamping mechanism consists of a first connecting ring (7), a second connecting ring (8), and two locking rings (9). The clamping mechanism includes two locking rings (9), which are symmetrically arranged at both ends of the wheel (3). The inner circumferential wall of the locking ring (9) is interference-fitted with the axle (2), and there is a gap between the locking ring (9) and the wheel (3). Each of the two locking rings (9) has a groove at one end opposite to the other. The first connecting ring (7) and the second connecting ring (8) are respectively embedded in the two grooves. The first connecting ring (7) and the second connecting ring (8) are both sleeved on the axle (2), and the first connecting ring (7) and the second connecting ring (8) are respectively in contact with the two end faces of the wheel (3).

2. The high stability bogie of claim 1, wherein The first connecting ring (7) and the second connecting ring (8) each include two rigid outer frames, an elastic body is filled between the two rigid outer frames, and there is a gap between the two rigid outer frames.

3. The high-stability bogie according to claim 2, characterized in that, The outer peripheral wall of the axle (2) is integrally formed with a fixing ring (201). The outer peripheral wall of the fixing ring (201) fits against the inner peripheral wall of the wheel (3). The outer peripheral wall of the fixing ring (201) is provided with a first keyway (202). The inner peripheral wall of the wheel (3) is provided with a second keyway (301). The limiting key (4) is embedded between the first keyway (202) and the second keyway (301).

4. The high stability bogie of claim 3, wherein One end of the wheel (3) is provided with a second clearance groove (303), one end of the first keyway (202) is connected to the outside of the fixing ring (201), and one end of the second keyway (301) is connected to the second clearance groove (303).

5. The high stability bogie of claim 4, wherein, It also includes a second limiting ring (5) and a first limiting ring (6); The inner circumference of the first limiting ring (6) is embedded in the axle (2), and one end face of the first limiting ring (6) is in contact with one end of the limiting key (4). The outer circumference of the second limiting ring (5) is embedded in the second clearance groove (303), and one end of the second limiting ring (5) is in contact with one end of the limiting key (4).

6. The high stability bogie of claim 5, wherein, One end of the second connecting ring (8) is in contact with the inner wall of the first relief groove (204), the inner wall of the second relief groove (303), one end face of the limiting key (4), the first limiting ring (6), and the second limiting ring (5).

7. The high-stability bogie according to claim 6, characterized in that, Both the second limiting ring (5) and the first limiting ring (6) include a rigid outer frame, the rigid outer frame is filled with an elastic body, and one side of the rigid outer frame has an opening.

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