A bogie wheel set lifting structure

Abstract

The present invention provides a bogie wheel set lifting structure, which includes a bogie and an axle box body located below the bogie; the axle box body includes a bearing box and a bearing box base integrally connected to the lower end of the bearing box; two primary rubber springs are arranged between the bogie and the bearing box base; the two primary rubber springs are respectively located on both sides of the bearing box; each primary rubber spring includes a metal outer shell; each metal outer shell is provided with a convex block; a vertical chute is respectively arranged on both sides of the bearing box; a lifting stop is arranged at the upper end of the vertical chute; each convex block can be slidably inserted and installed in a vertical chute. The present invention can not only realize the function of wheel set lifting, but also meet the strength requirements under running vibration and impact. When a large horizontal load appears between the bogie and the wheel set axle box, a reliable horizontal limit connection can be generated between the convex block and the chute, ensuring the stability of the horizontal connection between the bogie and the wheel set axle box and preventing large horizontal displacement of the primary rubber spring.

Description

Technical Field

[0001] The present invention belongs to the field of railway vehicle bogies, and particularly relates to a bogie wheel set lifting structure. Background Art

[0002] The wheel set lifting is an important structure of the conical rubber spring positioning bogie. When lifting and transporting the bogie, in order to avoid the abnormal stretching of the primary rubber spring, it plays a role in lifting the wheel set. As Figure 1 , the existing wheel set lifting structure realizes the function of lifting the wheel set through the lifting pin 101 welded on the side beam of the frame and the wheel set lifting ring 102 installed on the boss 103 of the front cover of the axle box by bolts. Since the existing wheel set lifting ring is installed at the axle end position where the vehicle vibration and impact are the greatest, and the installation of the lifting ring is a relatively long cantilever structure, when the vehicle runs on a track with severe corrugation, the installation boss on the front cover of the axle box and the installation bolts used are prone to cracks or even fractures, and falling will affect the driving safety. Summary of the Invention

[0003] To solve the above problems, the present invention provides a bogie wheel set lifting structure, which can not only realize the function of lifting the wheel set, but also meet the strength requirements under the vibration and impact of the vehicle, realize the long-term good use of the lifting structure, and meet the driving safety requirements.

[0004] Technical Solution: The present invention provides a bogie wheel set lifting structure, including a bogie and an axle housing located below the bogie; the axle housing includes a bearing housing and a bearing housing base integrally connected to the lower end of the bearing housing; two primary rubber springs are arranged between the bogie and the bearing housing base; the two primary rubber springs are respectively located on both sides of the bearing housing; each primary rubber spring includes a metal shell; a convex block is arranged on one side of each metal shell close to the bearing housing; a vertical chute is arranged on each side of the bearing housing; a lifting stop is arranged at the upper end of the vertical chute; one convex block on each side can be slidably inserted and installed in a vertical chute.

[0005] Further, the lifting stop is detachably installed at the upper end of the vertical chute.

[0006] Further, it is fixed to the upper end of the vertical chute by bolts.

[0007] Further, the convex block is integrally cast and connected to the metal shell.

[0008] Further, the convex blocks are arranged at intervals between the vertical chute and the lifting stop.

[0009] Further, the width of the convex block is slightly smaller than the width of the vertical chute.

[0010] Beneficial effects: The present invention realizes the function of wheel set lifting through the bumps on both sides of the bearing box and the lifting stop, playing a longitudinal stop role. This structure has high strength and good reliability, can meet the strength requirements under the vibration and impact of the train operation, realize the long-term intact use of the lifting structure, and meet the requirements of train operation safety. And in extreme cases, when there is a large horizontal load between the bogie and the axle box body, reliable horizontal limit connections can be generated between the bumps and the inner side wall of the vertical chute, as well as between the bumps and the bottom of the vertical chute, ensuring the stability of the horizontal connection between the bogie and the axle box body, preventing large horizontal displacements of the primary rubber springs, and improving the safety and reliability. Description of the Drawings

[0011] Figure 1 It is a schematic diagram of the existing wheel set lifting structure;

[0012] Figure 2 It is a schematic diagram of the structure of the present invention;

[0013] Figure 3 It is Figure 2 The partial enlarged view of I in

[0014] Figure 4 It is a schematic diagram of the primary rubber spring of the present invention;

[0015] Figure 5 It is a schematic diagram of the axle box body of the present invention. Detailed Embodiments

[0016] As Figure 2 and Figure 3 shown, the present invention provides a bogie wheel set lifting structure, which includes a bogie 1 and an axle box body located below the bogie 1; the axle box body includes a bearing box 2 and a bearing box base 3 integrally connected to the lower end of the bearing box 2.

[0017] Two primary rubber springs are arranged between the bogie 1 and the bearing box base 3; the two primary rubber springs are respectively located on both sides of the bearing box 2; each primary rubber spring includes a metal shell 4.

[0018] As Figure 4 , a bump 5 is integrally cast on the side of each metal shell 4 close to the bearing box 2. As Figure 5 , a vertical chute 6 is respectively arranged on both sides of the bearing box 2; a lifting stop 7 is arranged at the upper end of the vertical chute 6, and the lifting stop 7 is fixed to the upper end of the vertical chute 6 by a bolt 8. One bump 5 on each side can be slidably inserted and installed in a vertical chute 6. To facilitate the sliding of the bump 5 in the vertical chute 6 in the vertical direction, the width of the bump 5 is slightly smaller than the width of the vertical chute 6.

[0019] When the vehicle is assembled and in normal running state, the bump 5 and the lifting stop 7 are arranged at intervals and do not generate acting forces. The bogie and the wheel set are damped by the primary rubber springs. When the bogie is lifted and transported, the primary rubber springs are stretched until the bump 5 contacts the lifting stop 7, and the wheel set is lifted by the acting force between the bump 5 and the lifting stop 7 to avoid excessive stretching of the primary rubber springs.

[0020] During the assembly of the present invention, first, the bogie and the primary rubber springs are assembled, and then they are aligned and lowered from above the wheel set. The lifting stop 7 is in a disassembled state, so that one of the bumps 5 on each side can be slidably inserted and installed in a vertical chute 6. During the static load test, check the vertical, longitudinal and lateral clearance dimensions between the bump 5 and the vertical chute 6. After the three-way clearance dimensions meet the requirements, install the lifting stop 7 at the upper end of the vertical chute 6.

[0021] The material of the metal shell 4 is ductile iron, and the structure of the bump 5 is calculated by strength simulation analysis to meet the use requirements.

[0022] The present invention realizes the function of lifting the wheel set by the bumps 5 on both sides of the bearing housing 2 and the lifting stop 7, playing a longitudinal stop role; this structure has high strength and good reliability, can meet the strength requirements under the vibration and impact of the train operation, realizes the long-term perfect use of the lifting structure, and meets the train operation safety requirements. And in extreme cases, when a large horizontal load appears between the bogie 1 and the axle box body, reliable horizontal limit connections can be generated between the bump 5 and the inner side wall of the vertical chute 6, as well as between the bump 5 and the bottom of the vertical chute 6, ensuring the stability of the horizontal connection between the bogie 1 and the axle box body, preventing large horizontal displacements of the primary rubber springs, and improving the safety and reliability.

Claims

1. A bogie wheel set lifting structure, comprising a bogie (1) and an axle box body located below the bogie (1); the axle box body includes a bearing box (2) and a bearing box base (3) integrally connected to the lower end of the bearing box (2); two primary rubber springs are provided between the bogie (1) and the bearing box base (3); the two primary rubber springs are respectively located on both sides of the bearing box (2); each primary rubber spring includes a metal housing (4); characterized in that: On one side of each of the metal housings (4) close to the bearing housing (2), a convex block (5) is provided; the material of the metal housing (4) is ductile iron, and on both sides of the bearing housing (2), a vertical chute (6) is provided respectively; at the upper end of the vertical chute (6), a lifting stop (7) is provided; one of the convex blocks (5) on each side can be slidably inserted and installed in a vertical chute (6), and the convex block (5) forms a horizontal limit fit with the inner side wall of the vertical chute (6).

2. The bogie wheel set lifting structure according to claim 1, characterized in that: The lifting stop (7) is detachably installed at the upper end of the vertical chute (6).

3. The bogie wheel set lifting structure according to claim 2, characterized in that: The lifting stop (7) is fixed to the upper end of the vertical chute (6) by bolts (8).

4. The bogie wheel set lifting structure according to any one of claims 1-3, characterized in that: The convex block (5) is integrally cast and connected to the metal housing (4).

5. The bogie wheel set hanger structure according to claim 4, characterized in that: The convex block (5) and the lifting stop (7) are arranged at intervals.

6. The bogie wheel set lifting structure according to claim 5, characterized in that: The width of the convex block (5) is slightly smaller than the width of the vertical chute (6).

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