Mounting structure of secondary vertical damper and rail vehicle

Abstract

The utility model provides a kind of installation structure of secondary vertical shock absorber and railway vehicle, wherein, the installation structure of secondary vertical shock absorber includes lower mounting seat, upper mounting seat and the secondary vertical shock absorber installed between the two, and the lower mounting seat is fixed to the crossbeam of bogie.The utility model arranges the lower mounting seat of secondary vertical shock absorber in crossbeam, and the degree of tightness of component arrangement outside side beam is reduced;Since the installation position of secondary vertical shock absorber is offset relative to traditional inward side, thus, the additional damping caused by the deflection of car body and bogie is reduced, and the working environment of shock absorber is improved.The utility model also has the advantages of simple structure, compact arrangement, strong overall load capacity.

Description

Technical Field

[0001] This utility model relates to a secondary vertical shock absorber for rail vehicles, and in particular to the installation structure of a secondary vertical shock absorber. Background Technology

[0002] During operation, rail vehicles experience a certain degree of vertical and lateral sway between the bogie and the car body. Therefore, lateral and vertical vibration dampers are installed between the car body and the bogie to improve the vehicle's running stability and safety. With the development of rail transit towards high speed, heavy load, and lightweight design, higher requirements are placed on the layout of various bogie systems, necessitating a novel and high-performance secondary vertical vibration damper installation structure to meet the industry's development needs.

[0003] Traditional secondary vertical dampers are located on the outer side of the side beam, as seen in Chinese invention patent application CN105346552A and Chinese utility model patent CN206797402U. The lower mounting bracket of the secondary vertical damper is welded to the outer side of the bogie, while the upper mounting bracket is welded to the bolster or car body. This installation method occupies space on the outer side of the side beam, and the secondary vertical damper generates additional damping due to the deflection of the car body and bogie, reducing the service life of the rubber joints. Furthermore, because the secondary vertical damper is located on the outer side of the side beam, the working environment is relatively harsh. Utility Model Content

[0004] The main purpose of this utility model is to overcome the problem that the secondary vertical shock absorber occupies the external space of the side beam in the prior art, and to provide an installation structure for the secondary vertical shock absorber, which installs the secondary vertical shock absorber on the bogie crossbeam without occupying the space outside the bogie side beam.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an installation structure for a secondary vertical shock absorber, comprising a lower mounting base, an upper mounting base, and a secondary vertical shock absorber installed between the two, characterized in that: the lower mounting base is fixed to the crossbeam of the bogie.

[0006] Furthermore, two mounting holes are symmetrically opened on the side of the bogie's crossbeam near the side beam, and the lower mounting seats are correspondingly set in the mounting holes.

[0007] To improve the installation strength of the lower mounting base, this utility model includes an upper cover plate, a lower cover plate, and a web plate, with the outer wall of the lower mounting base welded and fixed to the web plate. As a further improvement, stiffening ribs are provided between the web plates, and the web plates and stiffening ribs are welded and fixed to the inner wall of the crossbeam. The lower mounting base is then welded and fixed to the web plate. To further improve the welding strength, the lower end of the lower mounting base is welded and fixed to the lower cover plate of the crossbeam, or the upper end of the lower mounting base is welded and fixed to the upper cover plate of the crossbeam.

[0008] In addition, this utility model also claims protection for a rail vehicle having a car body and a bogie, characterized in that it also has the aforementioned mounting structure for the secondary vertical shock absorber.

[0009] The beneficial effects of this utility model are as follows: 1. This utility model arranges the lower mounting base of the secondary vertical damper on the crossbeam, reducing the space constraints for arranging components on the outer side of the side beam.

[0010] 2. Because the installation position of the secondary vertical shock absorber is offset inwards compared to the conventional method, the additional damping caused by the deflection of the car body and bogie is reduced.

[0011] 3. The secondary vertical shock absorber of this utility model is no longer located on the outside of the side beam, but between the crossbeam and the underframe. Therefore, it is no longer directly exposed to the outside of the vehicle, thus improving the working environment of the shock absorber.

[0012] 4. This utility model also has the advantages of simple structure, compact layout and strong overall load-bearing capacity. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0014] Figure 1 This is a three-dimensional view of the installation structure of the two-stage vertical shock absorber of this utility model.

[0015] Figure 2 This is a top view of the bogie.

[0016] Figure 3 This is a schematic diagram showing the installation relationship between the secondary vertical shock absorber and the bogie of this utility model.

[0017] Figure 4 This is a side view of the installation structure of the two-stage vertical shock absorber of this utility model.

[0018] Figure 5 This is a three-dimensional view of the two-stage vertical shock absorber (with upper and lower elastic nodes) of this utility model.

[0019] Figure 6 This is a perspective view of the lower mounting base of the two-stage vertical shock absorber of this utility model.

[0020] Figure 7 This is a perspective view of the mounting base on the secondary vertical shock absorber of this utility model.

[0021] Explanation of reference numerals in the attached figures: 1. Lower mounting base; 2. Upper mounting base; 3. Secondary vertical shock absorber; 4. Crossbeam; 41. Mounting hole; 42. Lower cover plate; 43. Web plate; 44. Stiffener plate; 45. Upper cover plate; 5. Side beam; 6. Lower elastic joint; 7. Upper elastic joint. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] like Figure 1 As shown, the mounting structure of the secondary vertical shock absorber in this embodiment includes a lower mounting base 1, an upper mounting base 2, and a secondary vertical shock absorber 3 installed between the two. The lower mounting base 1 is fixed to the crossbeam 4 of the bogie, and the upper mounting base 2 is fixed to the chassis frame (in another embodiment, the upper mounting base 2 can also be fixed to the bolster).

[0024] like Figure 1 , Figure 2 In the embodiment shown, two mounting holes 41 are symmetrically opened on the side of the bogie's crossbeam 4 near the side beam 5. Two lower mounting seats 1 are correspondingly installed in the mounting holes 41 and welded to the crossbeam. The appropriate welding position can be selected according to the actual situation. After the frame is balanced and protected, the secondary vertical shock absorber 3 is fixed between the upper mounting seat 2 and the lower mounting seat 1 by bolts to achieve vertical shock absorption connecting the bogie and the car body. In this example, the lower mounting seat 1 is symmetrically arranged with respect to the centerline of the bogie and is located near the two ends of the vehicle.

[0025] like Figure 2 , Figure 3 As shown, in this embodiment, the bogie's crossbeam 4 is a box-shaped structure, comprising an upper cover plate 45, a lower cover plate 42, and a web plate 43. Ribs 44 are welded and fixed between the web plates 43, and both the web plates 43 and the ribs 44 are welded and fixed to the inner wall of the crossbeam 4. In this embodiment, the outer wall of the lower mounting seat 1 is welded and fixed to the web plate 43, and the lower end of the lower mounting seat 1 is welded and fixed to the lower cover plate 42 of the crossbeam 4, forming a fillet weld between the lower mounting seat 1 and the crossbeam. This improves the structural strength of the lower mounting seat 1 and facilitates the absorption of vertical vibrations between the bogie and the car body by the secondary vertical dampers. In this embodiment, the upper mounting seat 2 is fixed to the underframe side beam by bolts.

[0026] like Figure 1 , Figure 4 , Figure 5As shown, the lower end of the secondary vertical damper 3 is bolted to the lower mounting base 1 via a lower elastic node 6. Specifically, the lower end of the secondary vertical damper 3 is fixed with the lower elastic node 6, and the lower mounting base 1 has two mounting blocks with vertical threaded holes. The pins of the lower elastic node 6 are fixed to the mounting blocks with bolts, thus achieving an elastic connection between the lower end of the secondary vertical damper 3 and the lower mounting base 1. Similarly, the upper end of the secondary vertical damper 3 is fixed with an upper elastic node 7, and the upper mounting base 2 has two mounting blocks with vertical threaded holes. The pins of the upper elastic node 7 are fixed to the mounting blocks of the upper mounting base 2 with bolts, thus achieving an elastic connection between the upper end of the secondary vertical damper 3 and the upper mounting base 2. A perspective view of the lower mounting base 1 and the mounting base 2 can be found in [reference needed]. Figure 6 and Figure 7 .

[0027] In this embodiment, the pin of the upper elastic node 7 is arranged along the longitudinal direction of the vehicle, and the pin of the lower elastic node 6 forms an angle with the longitudinal direction of the vehicle. The angle is mainly based on the angle of the side wall 42. Considering that the angle has higher stability, the mounting holes 41 at both ends of the crossbeam in this embodiment are roughly triangular. This hole design makes the pin of the lower elastic node 6 form an angle with the longitudinal direction of the vehicle, and the angle range is generally 40-60°.

[0028] This embodiment also relates to a rail vehicle having a car body, a bogie, and the aforementioned mounting structure for the secondary vertical shock absorber.

[0029] 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 mounting structure for a secondary vertical damper, comprising a lower mounting base (1), an upper mounting base (2), and a secondary vertical damper (3) mounted between the two, characterized in that: The lower mounting base (1) is fixed to the crossbeam (4) of the bogie.

2. The mounting structure of the dual-stage vertical damper as described in claim 1, characterized in that: The bogie's crossbeam (4) has two symmetrical mounting holes (41) on the side near the side beam (5), and the lower mounting base (1) is set in the mounting hole (41) in a corresponding manner.

3. The mounting structure of the dual-stage vertical damper as described in claim 2, characterized in that: The crossbeam (4) has a box-shaped structure, with an upper cover plate (45), a lower cover plate (42) and a web plate (43), and the outer side wall of the lower mounting base (1) is welded and fixed to the web plate (43).

4. The mounting structure of the dual-stage vertical damper as described in claim 3, characterized in that: The lower end of the lower mounting base (1) is welded and fixed to the lower cover plate (42) of the crossbeam (4), or the upper end of the lower mounting base (1) is welded and fixed to the upper cover plate (45) of the crossbeam (4).

5. The mounting structure of the dual-stage vertical damper as described in claim 3, characterized in that: A stiffening plate (44) is provided between the web plates (43), and the web plates (43) and stiffening plates (44) are welded and fixed to the upper cover plate (45) and lower cover plate (42) of the crossbeam (4).

6. The mounting structure of the dual-stage vertical damper as described in claim 1, characterized in that: The lower end of the secondary vertical damper (3) is connected to the lower mounting base (1) through the lower elastic node (6), and the upper end of the secondary vertical damper (3) is connected to the upper mounting base (2) through the upper elastic node (7).

7. The mounting structure of the dual-stage vertical damper as described in claim 6, characterized in that: The pin of the upper elastic node (7) is arranged along the longitudinal direction of the vehicle, and the pin of the lower elastic node (6) forms an angle of 40-60° with the longitudinal direction of the vehicle.

8. The mounting structure of the dual-stage vertical damper as described in claim 6, characterized in that: The lower mounting base (1) is arranged symmetrically with respect to the lower centerline of the steering column.

9. The mounting structure of the dual-stage vertical damper as described in claim 1, characterized in that: The upper mounting bracket (2) is fixedly connected to the vehicle body frame or bolster by welding or bolts.

10. A rail vehicle having a car body and a bogie, characterized in that: It also has the mounting structure of the dual vertical shock absorber as described in any one of claims 1-9.

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