WO2023198160A1 - Bolster assembly and bogie - Google Patents

Abstract

The present disclosure relates to the technical field of goods wagons. Disclosed are a bolster assembly and a bogie. The bolster assembly comprises: a bolster (10), a center plate (30), a sand prevention ring (40) and side bearers (60); the center plate (30) is arranged on the bolster (10), and the side bearers (60) are arranged on the bolster (10) and located on two sides of the center plate (30); the sand prevention ring (40) is arranged on the bolster (10) and is sleeved outside the center plate (30), and the sand prevention ring (40) is higher than the center plate (30) in height. According to the bolster assembly and the bogie provided by the present disclosure, sand and dust can be effectively prevented from entering the position between a center bowl and a center plate, and the safety of a vehicle is ensured.

Description

A bolster composition and bogie

Cross-references to related applications

This application claims priority from the Chinese patent application filed on April 14, 2022 with application number 202210391543.5 and titled "A bolster composition and bogie", the entire content of which is incorporated herein by reference.

Technical field

The present disclosure belongs to the technical field of railway freight cars and relates to a bolster composition and a bogie.

Background technique

The three-piece bogie bolster consists of a center plate and side bearings assembled in the middle and upper part, which support the total weight of the car body through the center plate and side bearings. The upper and lower center discs of the vehicle have an open rotating and mating contact structure. Sand and gravel dust can easily enter between the upper and lower center discs. If too much sand and gravel accumulates, the friction capacity of the center disc will be weakened and the function of stable vehicle operation will be lost, which will affect the vehicle. In extreme cases, the vehicle may derail or overturn, causing immeasurable economic losses.

Contents of the invention

The present disclosure provides a bolster composition and a bogie, aiming to solve to a certain extent the technical problem in the prior art that the upper and lower center discs of the bogie bolster composition are prone to accumulation of sand and dust, deteriorating friction capabilities, and causing safety risks.

According to one aspect of the present disclosure, a bolster composition is provided, including: a bolster, a lower core plate, a sand-proof ring, and a side bearing; the lower core plate is provided on the bolster, and the side bearing is provided on the bolster and located On both sides of the lower core disk; the sand prevention ring is arranged on the bolster and is sleeved outside the lower core disk, and the sand prevention ring is higher than the height of the lower core disk.

In some embodiments, the lower core plate is provided with an annular placement groove, and the sand control ring is disposed in the annular placement groove.

In some embodiments, the width of the upper groove body of the annular placement groove is greater than the width of the lower groove body.

In some embodiments, the sand control ring is a flexible elastic material piece.

In some embodiments, the top of the sand control ring is configured as a raised portion with a triangular cross-section.

In some embodiments, the top of the protrusion is configured as an arc-shaped contact surface.

In some embodiments, the bolster is provided with a side support fixing part, and the side support fixation part is provided with a pair of side supports arranged oppositely along the thickness direction of the bolster.

In some embodiments, the bolster composition further includes: a side bearing mounting base;

The side bearing mounting base is fixed on the side bearing fixing part, and the pair of side bearings are arranged on the side bearing mounting base.

In some embodiments, the side supports are elastic side supports.

According to another aspect of the present disclosure, a bogie is provided, including: the bolster composition.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, a brief introduction will be made below to the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 shows a schematic structural diagram of a bolster according to some embodiments of the present disclosure;

Figure 2 shows a schematic structural diagram of a bolster composed of the bolster in Figure 1;

Figure 3 shows a front view of the bolster assembly in Figure 1;

FIG. 4 shows a schematic structural diagram of the side support mounting seat composed of the bolster in FIG. 1 .

Among them, 10-cushion, 20-side bearing mounting seat, 21-side bearing mounting surface, 22-side bearing fixing hole, 30-lower center plate, 31-lower center plate groove, 32-center plate wear plate, 33-center Pin hole, 34-center pin, 35-annular placement groove, 40-sand prevention ring, 50-upper center plate, 51-upper pin hole, 60-side bearing.

Detailed ways

By providing a bolster assembly and a bogie, the present disclosure solves the technical problem in the prior art that the upper and lower core discs of the bogie bolster assembly are prone to accumulation of sand and dust, thereby degrading the friction capacity and causing safety risks. At the same time, it is also possible to realize the universal interchangeability of the bolster side bearing installation structure by setting the side bearing arrangement, so that one bolster can be installed on two different car bodies, improving versatility.

Referring to FIG. 1 , the bolster provided by the present disclosure is composed as a part of the bogie of a railway vehicle and is used to carry the carriage structure.

In some embodiments, the bolster 10 , the lower core 30 disposed thereon, and the side supports 60 disposed on both sides of the lower core 30 carry the upper core 50 and the vehicle body respectively.

Due to the snap fit mode of the upper core disc 50 and the lower core disc 30 , there is a large open connection gap area between the two, and sand and dust can easily adhere and embed in the connection gap area, degrading the friction performance; as the dust accumulates, it may even This caused the upper center plate 50 to derail, seriously threatening driving safety.

Referring to Figures 1, 2 and 3, in some embodiments, a sand-proof ring 40 can be provided on the bolster 10, and the ring is placed outside the lower core plate 30, so that sand and dust can be restricted when the upper and lower core plates are in a clamped and assembled state. Enter the connecting and engaging area of the upper and lower core disks; in order to improve the dust and sand blocking effect, the height of the sand control ring 40 can be set higher than the height of the lower core disk 30, so that when the upper and lower core disks are engaged and assembled, the height of the sand prevention ring 40 The top is pressed against the bottom surface of the upper core disk 50, thereby forming a sealed space in combination with the upper and lower core disk structures, which greatly improves the dust-proof and sand-blocking effect.

Referring to FIG. 3 , in some embodiments, the lower core plate 30 is configured as a circular sunken groove 31 opened on the bolster 10 . The sunken groove 31 can be processed and formed after the bolster 10 is cast, and then the core disc wear disc 32 is disposed in the sunken groove 31 . Therefore, after dropping off the vehicle, the center plate 50 on the vehicle body or joint connector It falls on the core disc wear disc 32 and forms an effective rotary friction pair with it.

In some embodiments, the core disc wear disc 32 is in the shape of a circular bowl, that is, the edge is set as an upward extension, forming a cylindrical side wall structure as a whole, and an arc-shaped connecting portion is provided with the bottom of the disc. Moreover, the core disk wear disk 32 is made of wear-resistant material and has a stable friction coefficient, ensuring stable friction between the upper core disk and the upper core disk and ensuring vehicle operation safety.

In order to realize the accurate positioning of the upper and lower center plates, a center pin hole 33 can be provided at the center of the circular sunken groove 31, and the center pin 34 can be inserted into the center pin hole 33; when the vehicle is dropped, the upper center plate 50 The upper pin hole 51 opened in the center is matched and sleeved on the center pin 34, and falls on the core disc wear disc 2 along the axial direction of the center pin 34.

Referring to Figure 2, in order to stably fix the sand control ring 40, an annular placement groove 35 can be provided outside the sunken groove 31, and the sand control ring 40 can be embedded in the annular placement groove 35 to achieve stable positioning and fixation.

In order to facilitate installation, the width of the upper groove body of the annular placement groove 35 can be set to be larger than the width of the lower groove body, that is, the opening of the annular placement groove 35 is larger at the top and smaller at the bottom, thereby facilitating cutting placement.

In some embodiments, the sand control ring 40 is made of a flexible elastic material, which can establish elastic contact when it abuts against the upper core disc 50 , thereby maintaining stable and reliable contact and improving the sealing performance and sand and dust blocking performance of the sand control structure. performance. On the other hand, the elastic and flexible performance of the sand control ring 40 can be used to well adapt to the assembly gap of the upper and lower core discs, thereby always maintaining stable and good contact between the sand control ring 40 and the upper core disc 50 . At the same time, the material of the sand prevention ring 40 can be set to a material with wear-resistant properties, so that when the upper and lower heart plates rotate relative to each other, it can adapt to relative sliding friction in all directions, maintain structural integrity, and improve sealing performance.

In order to meet the contact sealing requirements between the upper core disk 50 and the sand-proof ring 40 , the top of the sand-proof ring 40 abuts against the bottom surface of the outer lip extending from the outside of the upper core disk 50 , thereby covering the main body of the upper core disk 50 . , to prevent sand and dust from entering.

In order to meet the reliability of contact and take into account the low friction with the upper core plate 50, the top of the sand prevention ring 40 can be set as a raised portion with a triangular cross-section, and the pointed top of the raised portion abuts the bottom surface of the outer lip. Achieve contact sealing.

In some embodiments, in order to ensure the morphological stability of the abutting portion of the raised portion and the reliability of the contact seal, the top of the raised portion can be configured as an arc-shaped contact surface.

Taking into account the elastic and soft properties of the sand control ring 40, the force generated by the contact at the arc-shaped contact surface of the triangular tip is small, and the impact on the relative movement between the upper and lower heart disks is small.

In some embodiments, the lower part of the sand control ring 40 is configured as a ring-shaped member, and the cross-section along its width direction is configured as a rectangular surface, so as to be stably embedded in the annular placement groove 35 .

Referring to Figure 1, in order to adapt to the support of a variety of different car bodies, a pair of side supports 60 can be arranged oppositely along the thickness direction of the bolster 10 to respectively support the front and rear adjacent car bodies; thus, the side supports 60 can be selected to support different car bodies. The shape is adapted to different car bodies, so that one bolster can adapt to the assembly needs of different car bodies, improving the versatility of the bolster composition. For this reason, a side support fixing part can be provided on the bolster 10 for fixing the side support. 60; and a side bearing mounting surface 21 adapted to the side bearing 60 can be provided in the side bearing fixing part, and a side bearing fixing hole 22 can be formed thereon for placing fasteners of the side bearing 60.

In other embodiments, other fixing structures may also be provided on the side bearing mounting surface 21, which is not limited here.

Referring to FIGS. 1 and 4 , in some embodiments, a side bearing mounting base 20 may also be provided on the side bearing fixing part for supporting and fixing the side bearing 60 . At the same time, the height of the side support 60 is raised relative to the bolster 10 to meet the installation requirements of different car bodies and different heights.

In some embodiments, the side supports 60 may be configured as elastic side supports.

Referring to Figures 2 and 3, the body of the bolster 10 can adopt a fish-belly variable cross-section box structure, and the interior of the bolster adopts a variable-height half-box structure supported by double webs of variable cross-section, which has light weight, low manufacturing cost, and variable cross-section. The double web facilitates opening holes on the side of the web for installation of other devices.

In some embodiments, side bearing mount 20 may be configured as a box cast structure.

In some embodiments, a bogie is also provided, which is composed of the above bolster.

The bolster composition and the bogie provided in one or more embodiments disclosed in this application are equipped with a sand-proof ring on the outer core of the lower core of the bolster, and the sand-proof ring is higher than the height of the lower core, so that the upper and lower cores snap together. At this time, the top of the sand-proof ring can be pressed against the upper core disk to block the connection area between the two, changing the existing open structural form of the connection area between the upper and lower core disks, preventing sand and dust from entering, and ensuring the movable connection area between the upper and lower core disks. The friction performance ensures its stable operation and safety.

Although the preferred embodiments of the present application have been described, those skilled in the art will be able to make additional changes and modifications to these embodiments once the basic inventive concepts are understood. Therefore, it is intended that the appended claims be construed to include the preferred embodiments and all changes and modifications that fall within the scope of this application.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (10)

1. A pillow consists of: a pillow, a lower heart plate, a sand-proof ring and a side support;

   The lower core plate is arranged on the bolster, and the side supports are arranged on the bolster and located on both sides of the lower core plate;

   The sand control ring is arranged on the bolster and is sleeved outside the lower core disk, and the sand control ring is higher than the height of the lower core disk.
2. The bolster composition according to claim 1, wherein the lower core plate is provided with an annular placement groove, and the sand prevention ring is arranged in the annular placement groove.
3. The bolster composition according to claim 2, wherein the width of the upper groove body of the annular placement groove is greater than the width of the lower groove body.
4. The bolster composition according to claim 1, wherein the sand-proof ring is a flexible elastic material.
5. The bolster composition according to claim 4, wherein the top of the sand control ring is configured as a convex portion with a triangular cross-section.
6. The bolster composition according to claim 5, wherein the top of the convex portion is configured as an arc-shaped contact surface.
7. The pillow composition according to claim 1, wherein the pillow is provided with a side support fixing part, and the side support fixation part is provided with a pair of side supports arranged oppositely along the thickness direction of the pillow.
8. The bolster assembly according to claim 7, wherein the bolster assembly further includes: a side bearing mounting base;

   The side bearing mounting base is fixed on the side bearing fixing part, and the pair of side bearings are arranged on the side bearing mounting base.
9. The bolster composition according to claim 8, wherein the side supports are elastic side supports.
10. A bogie, comprising: the bolster according to any one of claims 1 to 9.