CN110723164A

CN110723164A - Compact type traction device and bogie with same

Info

Publication number: CN110723164A
Application number: CN201910835399.8A
Authority: CN
Inventors: 李文学; 陈卓; 王云朋; 赵正华; 王绪英; 贾洪龙; 董磊
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-01-24

Abstract

The utility model provides a compact draw gear, is including drawing the core pin, drawing central rubber sleeve, traction seat, retaining ring, gland, draws core pin upper portion to fix to the automobile body on, the lower part falls to and draws the central rubber sleeve in forming conical surface cooperation, draws the central rubber sleeve to pass through interference fit pressure equipment to the traction seat in, it is spacing that the retaining ring embedding forms upper portion in drawing the seat recess, the lower part passes through the bolt with the gland with draw the core pin and be connected its characterized in that: the traction seat and the framework are pressed together by two groups of traction rubber piles, so that the traction seat and the framework traction connection point are lifted to 4 points from 2 points, the traction seat is used for transmitting all-directional acting force and introducing three-directional rigidity, the vibration isolation and buffering effects are realized under various motion postures of a vehicle, the deflection of the corners of the vehicle body and the bogie is realized when curves are borne, the traction seat is simpler and more reasonable in structure, high in strength and light in weight, more convenient to install and maintain, more compact in overall structure, and free of space occupation, and is suitable for the working state with limited space.

Description

Compact type traction device and bogie with same

Technical Field

The invention relates to a traction device on a railway vehicle bogie and a bogie with the traction device.

Background

The traction device is mainly used for transmitting the acting force between the bogie and the vehicle body in all directions and is an important component for ensuring the normal running of the railway vehicle. At present, the main structures of the domestic bogie traction device comprise a single-pull-rod structure and a double-pull-rod structure (shown in figures 5 and 6), and the two structures can meet the application requirements of most standard gauge vehicles. However, for special lines with narrow gauge, small curve radius and strict limit requirements, the chassis of the car body is required to be low, the axle distance of the bogie is required to be small, the distance between the cross beams of the bogie and the rail surface is required to be low, and the displacement capability is required to be improved. For the current situation of small space, the traditional pull rod type traction device has large rigidity, small deformation and poor deflection capability, and can not meet the requirements of traction function and vehicle clearance in the small space. Therefore, people in the industry have researched a collision type traction device which is suitable for the vehicle traction function in a limited space and realizes the vehicle traction function, but the collision type traction device can generate larger longitudinal impact in the vehicle starting and braking processes to influence the running stability and stability of the vehicle, and can only be applied to low-speed vehicles.

Disclosure of Invention

The invention aims to provide a bogie traction device which is suitable for small space installation and lower limit requirements and has small curve passing capacity and a bogie with the traction device, so that the structure compactness of the traction device is improved and the running performance of a vehicle is effectively improved on the premise of ensuring the transmission of acting force between the bogie and a vehicle body in all directions.

In order to achieve the purpose, the invention provides a compact traction device, which comprises a traction center pin, a traction center rubber sleeve, a traction seat, a check ring and a gland, wherein the upper part of the traction center pin is fixed on a vehicle body, the lower part of the traction center pin falls into the traction center rubber sleeve to form conical surface fit, the traction center rubber sleeve is pressed into the traction seat through interference fit, the check ring is embedded into a groove of the traction seat to form upper limit, and the lower part of the traction center pin is connected with the gland through a bolt, and the compact traction device is characterized in that: the traction seat and the framework are pressed together through the two groups of traction rubber piles, so that a traction connection point of the traction seat and the framework is lifted to 4 points from 2 points for transmitting acting force in all directions and introducing three-way rigidity, the vibration isolation and buffering effects are realized under various motion postures of the vehicle, and the deflection of corners of the vehicle body and the bogie is borne when a curve is passed.

The traction seat is of a duplex-shaped structure, the quality is greatly reduced, and the fatigue strength and the service life are further improved.

The two sides of the traction rubber pile are respectively connected with the framework beam mounting hole and the traction seat connecting I-beam through connecting plates by bolts, and the middle of the traction rubber pile is laminated, vulcanized and bonded by rubber metal to form a barrel-shaped structure.

A bogie, comprising a traction device, characterized in that: the traction device is any one of the traction devices.

Compared with the prior art, the invention has the following advantages and progresses:

(1) the traction center rubber pile has larger displacement capacity relative to the traction pull rod and the rubber node, and can adapt to a larger deflection angle generated between a vehicle body and a bogie when a vehicle passes through a small curve;

(2) compared with a traction pull rod and a rubber node, the traction center rubber pile is lighter in weight and more compact in structure, and is beneficial to being suitable for a small-wheelbase bogie and a narrow-wheelbase bogie;

(3) the rigidity selection range of the traction rubber pile is larger than that of the rubber node, the rigidity of each direction of the traction device can be more reasonably selected, the buffering effect is further achieved, the longitudinal impact of the vehicle in the traction, braking and running states is reduced, and the running stability and stability of the vehicle are improved.

(4) The traction seat has the advantages of simpler and more reasonable structure, high strength, light weight and more convenient installation and maintenance.

(5) The whole structure is more compact, the space is not occupied, and the device is suitable for the working state with limited space.

Drawings

FIG. 1 is a cross-sectional view of the structure of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic structural view of a truck according to the present invention;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a cross-sectional view of a prior art draft gear configuration;

fig. 6 is a top view of fig. 5.

Detailed Description

Referring to fig. 1 and 2, the traction center pin comprises a traction center pin 1, a traction center rubber sleeve 2, a traction seat 3, a traction rubber pile 4, a retainer ring 5 and a gland 6, wherein the upper part of the traction center pin 1 is fixed on a vehicle body 7 through bolts and nuts, and the lower part of the traction center pin falls into the traction center rubber sleeve 2 to form conical surface matching. The traction center rubber sleeve 2 is pressed into the traction seat 3 through interference fit, the upper portion is embedded into the groove of the traction seat through the check ring 5 to form upper portion limitation, the lower portion is connected with the gland 6 and the traction center pin 1 through the bolt, and the upper plane of the gland is tightly attached to the lower plane of the traction seat. The two sides of the traction rubber pile 4 are respectively connected with a beam mounting hole of a framework 9 and an I-beam of the traction seat 3 through connecting plates 8 by bolts, and the middle of the traction rubber pile is laminated, vulcanized and bonded by rubber metal into 6 layers to form a barrel-shaped structure for transmitting all-directional acting force and bearing the corner deflection of a vehicle body and a bogie when passing a curve.

Compared with the traditional Z-shaped traction pull rod mechanism, the invention adopts the H-shaped rubber pile traction mechanism, the traction connection point of the traction seat and the framework is lifted to 4 points from 2 points, and the whole structure is more stable and reliable; due to the increase of the traction connection points, the stress state of the whole traction seat is better, so that the traction seat is optimized to be a duplex-shaped structure from a box-shaped structure, the quality is greatly reduced, and the fatigue strength and the service life are further improved. Will pull rubber heap and replace traditional pull rod that pulls, except simplifying the structure, promote the advantage of pulling the tie point, more can introduce the great three-dimensional rigidity of optional scope between automobile body and bogie, pull rubber heap and can play the effect of vibration isolation and buffering under gestures such as vehicle traction, braking, side roll, sway, serpentine motion, cooperate traditional primary and secondary suspension system, can further promote the operation stationarity and the stability of vehicle, and the structure of traditional pull rod cooperation rubber node can't reach the purpose that promotes vehicle dynamics performance.

Referring to fig. 3 and 4, the bogie of the present invention comprises frame side beams 10, axle box rubber springs 11, an altitude valve 12, a non-bolster air spring 13, a safety wire rope 14, a unit brake cylinder 15, a wheel set assembly 16, a torsion bar spring 17, a seamless steel tube cross beam 18, a differential pressure valve 19, a transverse shock absorber 20, a transverse stop 21, a traction center pin 1 and a conical bearing 22, wherein a central traction device is connected to the frame seamless steel tube cross beam 18 through four traction rubber 4 piles.

The transmission sequence of the traction force of the invention is as follows: the vehicle body, the traction center pin, the traction center rubber sleeve, the traction seat, the traction rubber pile, the framework and the wheels ensure the normal running of the vehicle. The device has the advantages of simple structure, compact spatial arrangement, light weight, low cost and strong reliability.

Claims

1. The utility model provides a compact draw gear, is including drawing the core pin, drawing central rubber sleeve, traction seat, retaining ring, gland, draws core pin upper portion to fix to the automobile body on, the lower part falls to and draws the central rubber sleeve in forming conical surface cooperation, draws the central rubber sleeve to pass through interference fit pressure equipment to the traction seat in, it is spacing that the retaining ring embedding forms upper portion in drawing the seat recess, the lower part passes through the bolt with the gland with draw the core pin and be connected its characterized in that: the traction seat and the framework are pressed together through two groups of traction rubber piles, so that the traction connection point of the traction seat and the framework is lifted from 2 points to 4 points.

2. A compact pulling apparatus as defined in claim 1, wherein: the traction seat is of a duplex-shaped structure.

3. A compact pulling apparatus as defined in claim 1, wherein: the two sides of the traction rubber pile are respectively connected with the framework beam mounting hole and the traction seat connecting I-beam through connecting plates by bolts, and the middle of the traction rubber pile is laminated, vulcanized and bonded by rubber metal to form a barrel-shaped structure.

4. A bogie, comprising a traction device, characterized in that: the traction device is any one of the traction devices.