CN110843845B

CN110843845B - Railway vehicle coupler buffer protection system

Info

Publication number: CN110843845B
Application number: CN201911059886.6A
Authority: CN
Inventors: 刘若晨; 王益民; 刘舒沁; 汪伟; 薛宇敬阳; 王宇; 张兰春
Original assignee: Jiangsu University of Technology
Current assignee: Jiangsu University of Technology
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-12-04
Anticipated expiration: 2039-11-01
Also published as: CN110843845A

Abstract

The invention relates to the technical field of rail transit, in particular to a buffer protection system for a coupler of a rail vehicle, which comprises a buffer, a pressure sensor, a locking device, an upper computer and a lower computer, wherein the buffer comprises a buffer main body, and an upper end plate and a lower end plate are respectively arranged at the top end and the bottom end of the buffer main body; the pressure sensor is arranged at the bottom of the upper end plate; the locking device is arranged between the upper end plate and the lower end plate and can rotate relative to the upper end plate; the upper computer is connected with the pressure sensor; the lower computer is connected with the upper computer and the locking device. The buffer protection system can lock the buffer at a stage with lower pressure, and the rigidity of the locking device is utilized to offset the pressure at the stage, so that the use frequency of the buffer is reduced, the mechanical property of an elastic element of the buffer is protected, and the service life of the buffer is prolonged.

Description

Railway vehicle coupler buffer protection system

Technical Field

The invention relates to the technical field of rail transit, in particular to a protection system for a coupler buffer of a rail vehicle.

Background

The buffer is an important part of the coupler of the railway vehicle, and the coupler is easy to be damaged and breaks down due to mechanical vibration generated during coupler connection and vehicle running, so that the buffer can reduce the mechanical vibration, protect the coupler and prolong the service life of the coupler. However, the coupler can continuously keep slight vibration in the running process of a vehicle, so that the buffer is always in a low-voltage high-frequency working state, main buffering parts of the buffer are all elastic elements, and the mechanical property of the elastic elements is reduced, the buffering effect of the buffer is not obvious and the buffering efficiency is reduced due to long-term frequent use.

Disclosure of Invention

The invention solves the problems of mechanical property reduction, unobvious buffer effect and buffer efficiency reduction caused by long-term frequent use of an elastic element of a buffer in the related technology, and provides a buffer protection system of a railway vehicle coupler, which can lock the buffer at a stage with lower pressure, and utilizes the rigidity of a locking device to offset the pressure at the stage, thereby greatly reducing the use frequency of the buffer, protecting the mechanical property of an elastic element of the buffer and prolonging the service life of the buffer.

In order to solve the technical problems, the invention is realized by the following technical scheme: a railway vehicle coupler draft gear protection system comprising:

the buffer comprises a buffer main body, and an upper end plate and a lower end plate are respectively arranged at the top end and the bottom end of the buffer main body;

the pressure sensor is arranged at the bottom of the upper end plate;

the locking device is arranged between the upper end plate and the lower end plate and can rotate relative to the upper end plate;

the upper computer is connected with the pressure sensor and is used for receiving signals output by the pressure sensor;

and the lower computer is connected with the upper computer and the locking device and controls the locking device by receiving signals from the upper computer.

Preferably, 2 fixed supports are symmetrically arranged on the lower end plate.

Preferably, the locking devices comprise 4 groups which are distributed at four corners of the upper end plate and the lower end plate.

As preferred scheme, the locking device includes sleeve I, sleeve II and motor, I one end of sleeve is connected with the up end plate and can rotate for the up end plate under motor drive, II one ends of sleeve and lower end plate fixed connection, the other end of sleeve I and the other end of sleeve II are nested each other and can lock.

As a preferred scheme, an automatic return spring is installed in the sleeve II, one end of the automatic return spring is fixedly connected with the lower end plate, and the other end of the automatic return spring is in contact with the wall of the sleeve I.

As a preferred scheme, the lower computer is a PLC controller.

Compared with the prior art, the invention has the beneficial effects that: the buffer protection system can lock the buffer at a stage with lower pressure, and the rigidity of the locking device is utilized to offset the pressure at the stage, so that the use frequency of the buffer is greatly reduced, the mechanical property of an elastic element of the buffer is protected, and the service life of the buffer is prolonged.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic illustration of the draft gear protection system of the present invention mounted to a coupler;

fig. 3 is a flow chart of the operation of the present invention.

In the figure:

1. the automobile bumper comprises an upper end plate, 2, a lower end plate, 3, a pressure sensor, 4, sleeves I and 5, sleeves II and 6, a bumper body, 7, a fixed support, 8, a coupler, 9 and a front slave plate.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1, the railway vehicle coupler buffer protection system comprises a buffer, a pressure sensor 3, a locking device, an upper computer and a lower computer, wherein the buffer comprises a buffer main body 6, and an upper end plate 1 and a lower end plate 2 are respectively installed at the top end and the bottom end of the buffer main body 6; the pressure sensor 3 is arranged at the bottom of the upper end plate 1 and used for receiving the pressure transmitted by the upper end plate 1; the locking device is arranged between the upper end plate 1 and the lower end plate 2 and can rotate relative to the upper end plate 1; the upper computer is connected with the pressure sensor 3 and is used for receiving signals output by the pressure sensor 3; the lower computer is connected with the upper computer and the locking device and controls the locking device to rotate by receiving signals from the upper computer, and the lower computer adopts a PLC (programmable logic controller).

In one embodiment, in order to facilitate the installation of the

car hook

8, 2 fixed supports 7 are symmetrically installed on the lower end plate 2, and an included angle of 120-150 degrees is formed between the two fixed supports 7.

In one embodiment, in order to achieve a better protection effect for the bumper, the locking devices have 4 groups distributed at four corners of the upper end plate 1 and the lower end plate 2.

Further, the locking device comprises a sleeve I4, a sleeve II 5 and a motor, one end of the sleeve I4 is connected with the upper end plate 1 and can rotate relative to the upper end plate 1 under the driving of the motor, specifically, in the invention, four corners of the upper end plate 1 are respectively provided with a groove, each groove is internally provided with an electric control turntable bearing, and one end of the sleeve I4 is connected with the upper end plate 1 through the electric control turntable bearing and can rotate for a certain angle; the electric control turntable bearing is connected with a motor, and the motor is connected with the PLC; the diameter of sleeve I4 is less than sleeve II 5, and II 5 one ends of sleeve and 2 fixed connection of lower end plate, the other end of sleeve I4 and the other end of sleeve II 5 are nested each other and accessible round pin lock is dead.

Further, install automatic re-setting spring in sleeve II 5, automatic re-setting spring's one end and 2 fixed connection of lower end plate, the other end contacts with the section of thick bamboo wall of sleeve I4, automatic re-setting spring also can provide certain damping and help the buffer energy-absorbing when the buffer normally works, after the pressure that upper end plate 1 bore reduces gradually, automatic re-setting spring provides the elastic force and gives the section of thick bamboo wall of sleeve I4, make it resume original position, the locking device deadlocking, buffer stop work.

As shown in fig. 2, a coupler 8 is mounted on the bumper protection system of the present invention, wherein the rear portion of the coupler 8 is located between two fixed supports 7, the coupler 8 generates vibration during the running of the vehicle, pressure is transmitted from a front slave plate 9 to an upper end plate 1, and a pressure sensor 3 mounted on the upper end plate 1 can sense a pressure signal from the upper end plate 1.

As shown in fig. 3, the workflow is as follows:

the pressure sensor 3 receives the pressure from the upper end plate 1, signals are transmitted to the upper computer, the upper computer analyzes the pressure signals from the pressure sensor 3, if the pressure exceeds a threshold value, the upper computer sends an instruction to the lower computer, the lower computer controls the motor to work, the motor shaft rotates to drive the electric control turntable bearing to rotate, the sleeve I4 rotates along with the electric control turntable bearing, the pin lock at the connecting end of the sleeve I4 and the sleeve II 5 is opened, and the buffer is in a normal working state; if the threshold value is not exceeded, the upper computer does not send an instruction to the lower computer, the sleeve I4 and the sleeve II 5 are kept in a locked state, and slight buffering energy is absorbed by the rigidity of the sleeve I4 and the sleeve II 5.

The above embodiments are preferred embodiments of the present invention, and those skilled in the art can make variations and modifications to the above embodiments, therefore, the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A railway car coupler draft gear protection system, comprising:

the buffer comprises a buffer main body (6), wherein the top end and the bottom end of the buffer main body (6) are respectively provided with an upper end plate (1) and a lower end plate (2);

the pressure sensor (3), the said pressure sensor (3) is mounted to the bottom of the upper end plate (1);

a locking device mounted between the upper end plate (1) and the lower end plate (2), the locking device being rotatable relative to the upper end plate (1);

the upper computer is connected with the pressure sensor (3) and is used for receiving signals output by the pressure sensor (3);

2. The railcar coupler draft gear protection system of claim 1, wherein: and 2 fixed supports (7) are symmetrically arranged on the lower end plate (2).

3. The railcar coupler draft gear protection system of claim 1, wherein: the locking device is provided with 4 groups which are distributed at four corners of the upper end plate (1) and the lower end plate (2).

4. The railcar coupler draft gear protection system of claim 3, wherein: the locking device comprises a sleeve I (4), a sleeve II (5) and a motor, one end of the sleeve I (4) is connected with the upper end plate (1) and can rotate relative to the upper end plate (1) under the driving of the motor, one end of the sleeve II (5) is fixedly connected with the lower end plate (2), and the other end of the sleeve I (4) and the other end of the sleeve II (5) are mutually nested and can be locked.

5. The railcar coupler draft gear protection system of claim 4, wherein: and an automatic reset spring is installed in the sleeve II (5), one end of the automatic reset spring is fixedly connected with the lower end plate (2), and the other end of the automatic reset spring is in contact with the cylinder wall of the sleeve I (4).

6. The railcar coupler draft gear protection system of claim 1, wherein: the lower computer is a PLC controller.