CN112078621A

CN112078621A - Primary suspension device of bogie

Info

Publication number: CN112078621A
Application number: CN202010966523.7A
Authority: CN
Inventors: 秦烺; 蔡超; 邓小星; 谭桐; 彭波; 李燕慧; 杨亚楠; 刘金菊; 申长宏
Original assignee: CRRC Zhuzhou Locomotive Co Ltd
Current assignee: CRRC Zhuzhou Locomotive Co Ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2020-12-15

Abstract

The invention relates to a bogie primary suspension device for a railway vehicle, in particular to a primary suspension device which is fixed between an axle box and a framework by adopting a rubber spring. The invention achieves the purpose of fitting with the outer surface of the axle box body by adapting the appearance of the rubber spring to the outer surface of the outer shell of the axle box body, thereby reducing the occupied space and increasing the damping contact surface.

Description

Primary suspension device of bogie

Technical Field

The invention relates to a bogie primary suspension device for a railway vehicle, in particular to a primary suspension device which is fixed between an axle box and a framework by adopting a rubber spring.

Background

A prior art primary suspension system using rubber springs is shown in fig. 1. The primary suspension apparatus includes an axle housing enclosure A1, a primary suspension mount A3, and a rubber spring A2 mounted between the axle housing and the primary suspension mount. The existing suspension device has the following problems: 1) the rubber spring is arranged between the axle box body shell and the primary suspension seat, and the irregular space between the axle box body shell and the primary suspension seat is complex in positioning and poor in manufacturability; 2) because the rubber spring occupies the space of a part of axle boxes, particularly axle box bearings, the axle weight of the bogie is limited, and the bogie is generally used for light rail vehicles; 3) the primary suspension seat is of a U-shaped structure, a lifting rod A4 is arranged at the bottom of the primary suspension seat, and the lifting rod is matched with the axle box body to realize a primary lifting function, so that the lower suspension device has large limitation on a framework structure and can only be applied to a two-axle bogie; 4) the whole set of device has a large weight.

Disclosure of Invention

The invention aims to provide a novel bogie primary suspension device which is simple in structure, small in occupied space, light in weight, suitable for larger axle weight and applicable to a two-axle or three-axle bogie.

In order to achieve the purpose of the invention, the technical scheme provided by the invention is as follows: a bogie primary suspension device comprises an axle box body shell, a rubber spring and a primary suspension seat, wherein

The rubber spring is a rubber body, wherein one surface of the rubber spring is adapted to the outer surface of the axle box body shell and is arranged on the outer surface of the axle box body shell; a suspension is coupled to the axle housing.

The invention achieves the purpose of fitting with the outer surface of the axle box body by adapting the appearance of the rubber spring to the outer surface of the outer shell of the axle box body, thereby reducing the occupied space and increasing the damping contact surface.

The further improvement lies in that the outer surface of the axle box body shell connected with the rubber spring is arc-shaped, and the rubber spring is attached to the arc-shaped. The arc shape is a good stress surface, so if the axle box body shell, especially the position where the rubber spring is installed, is designed to be the arc shape, the contact surface of the corresponding rubber spring is also the arc shape so as to be attached to the axle box body shell. Such a design may increase load bearing capacity to accommodate vehicles with greater axle weights.

According to the embodiment of the invention, the length or/and the width of the arc-shaped partition plate or the arc-shaped cover plate are preferably larger than the corresponding length or/and width of the rubber spring, so that the edges of the arc-shaped partition plate and the arc-shaped cover plate exceed the edges of the rubber spring. The rubber spring is not beyond the edge of the arc-shaped partition plate or/and the arc-shaped cover plate when stressed and deformed due to the structural characteristics, so that the rubber spring is protected.

In order to improve the buffering effect of the rubber spring, the rubber spring is designed into multiple layers, and arc-shaped partition plates are arranged among the multiple layers. The arc-shaped partition plate can be made of a steel plate with elasticity, such as a spring plate.

The top surface of the rubber spring, or when the rubber spring is a multilayer rubber spring, the top surface of the uppermost rubber spring is covered with an arc-shaped cover plate attached to the top surface. The purpose is to realize the positioning matching with a primary suspension seat and transmit traction force and braking force through an arc-shaped cover plate.

The rubber spring is provided in plurality at intervals along the outer surface of the axle box housing. Preferably, the rubber springs are arranged in an axially symmetrical mode relative to the axle box at intervals so as to ensure that the rigidity and the damping of two sides are equal and the stress is balanced. The vertical rigidity can be effectively reduced for monoblock rubber spring in the setting of a plurality of rubber spring, can optimize the bogie dynamics performance through the regulation of spring rigidity.

In the invention, the rubber spring is preferably connected and fixed with the surface which is contacted with the rubber spring through vulcanization.

Preferably, the outer surface of the axle box body shell is circular, and the rubber spring, the arc-shaped partition plate or/and the arc-shaped cover plate are concentric with the outer surface of the axle box body shell.

According to the invention, a plurality of first bosses are arranged on the upper outer surface of the arc-shaped cover plate; and a second boss or a groove corresponding to the boss is arranged on the primary suspension seat. The first boss and the second boss are matched to complete positioning of the suspension device, and the positioning comprises transverse positioning and longitudinal positioning.

The primary suspension seat arranged on the framework comprises a side beam lower cover plate and support plates symmetrically arranged below the side beam lower cover plate, and arc-shaped surfaces matched with the arc-shaped cover plates are arranged on the support plates so as to be attached to the side beam lower cover plate.

The advantageous effects of the present invention can be reflected from its structure.

1) The rubber spring is solidified on the axle box body shell, so that the integrated axle box suspension device is formed, the weight is reduced, the occupied space is reduced, and further, the rubber spring adopts an integrated multi-layer sector structure taking the axle box body shaft as the center, so that the bearing space of the axle box is not occupied, the bearing capacity can be effectively improved, and the integrated axle box suspension device is suitable for vehicles with larger axle weights;

2) because the framework primary suspension seat is a side beam lower cover plate and support plates symmetrically arranged below the side beam lower cover plate, the framework primary suspension seat can adapt to a two-axle or three-axle bogie;

3) because the rubber spring can provide all-directional rigidity and damping, the primary suspension device does not need to be provided with an independent shock absorber, and the structure is simpler.

Drawings

FIG. 1 is a schematic view of a prior art primary suspension system;

FIG. 2 is a schematic structural diagram of an embodiment of the present invention;

FIG. 3 is a schematic view of an axlebox housing with a cured rubber spring according to an embodiment of the present invention;

FIG. 4 is a schematic view of a suspension base according to an embodiment of the present invention.

Detailed Description

Referring to fig. 2 and 3, a suspension system for a rail vehicle is shown in an embodiment of the invention, comprising a rubber spring 102 disposed between a frame and an axle housing, of which only an axle housing 101 is shown. The rubber spring 102 is in the form of a rubber block, and is attached to the outer surface of the pedestal housing 101. Since the pedestal housing 101 is cylindrical, the rubber spring 102 is connected to the pedestal housing 101 in a fan shape, and the rubber spring 102 has a multi-layer structure with an arc-shaped partition plate 103 provided between layers. In the present embodiment, two layers are provided. While two multi-layered rubber springs 102 are symmetrically disposed on the top of the pedestal housing 101. The upper surfaces of the two multi-layer rubber springs 102 are covered with arc-shaped cover plates 105. The length and the width of the arc cover plate 105 and the arc partition plate 103 are both larger than those of the rubber spring 102, so that the edges of the arc partition plate 103 and the arc cover plate 105 are beyond the edges of the rubber spring. A plurality of

first bosses

106, 104 are further provided on the upper surface of the arc-shaped cover plate 105, wherein the first boss 106 functioning as a longitudinal stopper is provided at the middle of the arc-shaped cover plate 105, and the first bosses 104 at both ends of the upper surface of the arc-shaped cover plate function as lateral stoppers.

Referring to fig. 4, a primary suspension apparatus according to an embodiment of the present invention is disclosed in which a primary suspension base is provided on a frame (the frame is not shown). The lower cover plate 201 of the side beam of the framework and the supporting plate 204 symmetrically arranged under the lower cover plate 201 of the side beam are provided with arc surfaces 203 matched with the arc cover plate 105 on the supporting plate 204, so that the two are jointed. A space is formed between the top ends of the two oppositely arranged support plates 204, the bulge 106 which has the function of longitudinal stopping on the arc-shaped cover plate 105 is accommodated, and the second boss 202 which is positioned with the first bosses at the two ends of the upper surface of the arc-shaped cover plate is arranged at the lower end of the support plate, so that the transverse positioning function is realized. A reinforcing member 205 is also provided between the two support plates 204 provided at the same end of the side sill lower cover 201.

Claims

1. A bogie primary suspension device comprises an axle box housing (101), a rubber spring (102) and a primary suspension seat (2), and is characterized in that

The rubber spring (102) is a rubber body, wherein one surface of the rubber spring (102) is adapted to the outer surface of the axle box housing (101) and is arranged on the outer surface of the axle box housing (101);

a suspension is coupled to the axle housing.

2. The primary suspension apparatus according to claim 1, wherein the outer surface of the pedestal housing (101) that is connected to the rubber spring (102) is curved, and the rubber spring (102) conforms to the curved shape.

3. The primary bogie suspension according to claim 2 wherein the rubber spring (102) is provided in a plurality of layers with arcuate partitions (103) disposed therebetween.

4. A bogie primary suspension according to claim 3 characterised in that the top surface of the rubber spring (102) is provided with an arcuate cover plate (105) which abuts the top surface.

5. The bogie primary suspension apparatus according to claim 2 or 3 wherein the length or/and width of the curved spacer (103) or curved cover plate (105) is greater than the corresponding length or/and width of the rubber spring (102) such that the edges of the curved spacer (103) and curved cover plate (105) extend beyond the edges of the rubber spring.

6. Bogie-suspension according to one of the claims 1 to 4, characterized in that the rubber spring (102) is arranged in a plurality spaced apart along the outer surface of the axlebox housing.

7. Bogie-suspension according to one of claims 1 to 4, characterized in that the rubber spring (102) is attached by vulcanization to the surface with which it is in contact.

8. Bogie-suspension according to one of the claims 1 to 4 characterized in that the pedestal housing (101) outer surface is circular and the rubber spring (102), the curved spacer (103) or/and the curved cover plate (105) are concentric with the pedestal housing outer surface.

9. The primary bogie suspension system according to claim 4 wherein said arcuate cover plate has a plurality of first bosses (106, 104) on an upper outer surface thereof;

second bosses or grooves (206, 202) corresponding to the bosses are arranged on the primary suspension seats.

10. A primary suspension arrangement according to claim 4, characterised in that the primary suspension seat is provided with an arcuate surface which mates with the arcuate cover plate (105).