EP3741643A1

EP3741643A1 - Vehicle and vehicle body collision energy absorption device thereof

Info

Publication number: EP3741643A1
Application number: EP20754132.7A
Authority: EP
Inventors: Shihong JIANG; Hanqin MIN; Lixin CONG; Qiang Zhang; Wenyue SUN
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2019-02-26
Filing date: 2020-02-25
Publication date: 2020-11-25
Anticipated expiration: 2040-02-25
Also published as: EP3741643A4; SG11202007588WA; HUE063554T2; RS64841B1; EP3741643B1; WO2020173436A1

Abstract

A vehicle and a vehicle body collision energy absorbing device thereof are disclosed by this application. A coupler (8) of the vehicle body collision energy absorbing device includes a coupler body (81) and an expansion pipe (82) that absorbs energy and expands relative to the coupler body, and the coupler body (81) is arranged on a coupler mounting plate (1). A vehicle body structure (2) is provided with an energy absorbing cavity, and the coupler mounting plate (1) and the expansion pipe (82) are arranged in the energy absorbing cavity. The vehicle body collision energy absorbing device further includes a compression energy absorbing unit (6) arranged in the energy absorbing cavity, a locking device (3) that locks the coupler mounting plate (1) relative to the energy absorbing cavity, a retreat support (5) arranged between the coupler mounting plate (1) and the compression energy absorbing unit (6), and a shear pin (4) connecting the vehicle body structure (2) with the retreat support (5). One end of the compression energy absorbing unit (6) abuts against a rear plate of the energy absorbing cavity. The retreat support (5) is slidably arranged in the energy absorbing cavity, and is provided with a locking component and a linkage structure. The locking component unlocks the locking device (3) after being away from the coupler mounting plate (1), and the linkage structure has a positioning structure axially positioned with the expansion pipe (82). The vehicle body collision energy absorbing device improves the energy absorption effect and ensures the safety of passengers' lives and properties.

Description

The present application claims the priority to Chinese Patent Application No. 201910141398.3 , titled "VEHICLE AND VEHICLE BODY COLLISION ENERGY ABSORBING DEVICE THEREOF", filed with the China National Intellectual Property Administration on February 26, 2019, which is incorporated herein by reference in its entirety.
The present application claims the priority to Chinese Patent Application No. 201920244002.3 , titled "VEHICLE AND VEHICLE BODY COLLISION ENERGY ABSORBING DEVICE THEREOF", filed with the China National Intellectual Property Administration on February 26, 2019, which is incorporated herein by reference in its entirety.

FIELD

The present application relates to the technical field of energy absorption safety protection equipment, and in particular to a vehicle and a vehicle body collision energy absorbing device thereof.

BACKGROUND

With the rapid development of China's rail transportation construction, traveling is more convenient, and the harm caused by accidents is also increasing. While improving the reliability of active control, the passive safety of rail vehicles has gradually become the focus of attention. In order to alleviate the huge damage to the vehicle body structure when rail transportation vehicles collide with each other, how to ensure the safety of vehicle collision is worthy of designers' deep consideration. When rail vehicles collide, the leading vehicle is subjected to the greatest impact, and the impact on subsequent vehicles gradually reduces. Considering the vehicle energy absorption requirements and the actual energy absorption means, an absorbing device with large energy absorption capability is generally arranged on the leading vehicle.
When two high-speed trains collide, the coupler is impacted first. In order to absorb the energy generated by train collision as much as possible, it should be ensured that the structure of the coupler can safely and reliably absorb more energy.
Therefore, how to improve the energy absorption effect and ensure the safety of passengers' lives and properties is an urgent problem to be solved by those skilled in the art.

SUMMARY

In view of this, a vehicle body collision energy absorbing device is provided according to the present application, so as to improve the energy absorption effect and ensure the safety of passengers' lives and properties. A vehicle including the vehicle body collision energy absorbing device is further provided according to the present application.
In order to achieve the above objects, the following technical solutions are provided according to the present application.
A vehicle body collision energy absorbing device includes a coupler, a coupler mounting plate and a vehicle body structure. The coupler includes a coupler body and an expansion pipe that absorbs energy and expands relative to the coupler body. The coupler body is arranged on the coupler mounting plate.
The vehicle body structure is provided with an energy absorbing cavity, and the coupler mounting plate and the expansion pipe are arranged in the energy absorbing cavity.
The vehicle body collision energy absorbing device further includes a compression energy absorbing unit arranged in the energy absorbing cavity, a locking device that locks the coupler mounting plate relative to the energy absorbing cavity, a retreat support arranged between the coupler mounting plate and the compression energy absorbing unit, and a shear pin connecting the vehicle body structure with the retreat support.
One end of the compression energy absorbing unit abuts against a rear plate of the energy absorbing cavity. The retreat support is slidably arranged in the energy absorbing cavity, and is provided with a locking component and a linkage structure. The locking component unlocks the locking device after being away from the coupler mounting plate, and the linkage structure has a positioning structure axially positioned with the expansion pipe. When the expansion pipe drives a guide pipe and the retreat support to slide, the shear pin breaks.
Preferably, in the vehicle body collision energy absorbing device, the locking device is a trapezoidal block which is rotatable relative to the vehicle body structure, an end surface of the coupler mounting plate inclines towards the coupler along a direction of approaching the compression energy absorbing unit;
when the locking device is in a locked state, a large end of the trapezoidal block contacts the retreat support, one side surface of the trapezoidal block contacts the end surface of the coupler mounting plate, and the other side surface of the trapezoidal block contacts the locking component; and
after the retreat support is separated from the trapezoidal block, the trapezoidal block can rotate relative to the vehicle body structure and be separated from the coupler mounting plate.
Preferably, in the vehicle body collision energy absorbing device, a cross section of the trapezoidal block is a right-angled trapezoid;
the oblique sideline of the right-angled trapezoid is located on the side surface of the trapezoidal block in contact with the end surface of the coupler mounting plate; the right-angle sideline of the right-angled trapezoid is located on the side surface of the trapezoidal block in contact with the locking component; and
the locking component is a position-limiting block provided between the trapezoidal block and the vehicle body structure.
Preferably, the vehicle body collision energy absorbing device further includes a position-limiting protrusion arranged at an opening of the energy absorbing cavity and configured to restrict the coupler mounting plate from sliding out of the energy absorbing cavity.
Preferably, in the vehicle body collision energy absorbing device, two position-limiting protrusions are provided and are symmetrically arranged on two sides of the opening of the energy absorbing cavity.
Preferably, in the vehicle body collision energy absorbing device, the linkage structure is a guide pipe that is fixedly connected to the retreat support and penetrates through the compression energy absorbing unit, and the guide pipe is sleeved on the outside of the expansion pipe.
Preferably, in the vehicle body collision energy absorbing device, the rear plate of the energy absorbing cavity is provided with an avoidance hole for the guide pipe and the expansion pipe to pass through.
Preferably, in the vehicle body collision energy absorbing device, the positioning structure of the guide pipe is a stepped surface; and
the outer surface of the expansion pipe has a shoulder structure capable of cooperating with the stepped surface.
Preferably, in the vehicle body collision energy absorbing device, two locking devices are provided and are symmetrically arranged at two ends of the coupler mounting plate.
A vehicle is further provided according to the present application, which includes the vehicle body collision energy absorbing device according to any one of the above aspects.
It can be seen from the above technical solutions that, in the vehicle body collision energy absorbing device provided by the present application, when two high-speed trains collide with each other, the coupler is impacted, and the expansion pipe extends outward relative to the coupler body to complete the first energy absorption; moreover, the linkage structure has a positioning structure which is axially positioned with the expansion pipe; after the expansion pipe extends outward relative to the coupler body, the expansion pipe drives the guide pipe and the retreat support to slide, and the shear pin breaks, so that the retreat support moves away from the coupler mounting plate, the locking component unlocks the locking device, and the locking device unlocks the coupler mounting plate; and the coupler mounting plate slides in the energy absorbing cavity under the action of the impact force and moves toward the compression energy absorbing unit, and the compression energy absorbing unit is compressed to complete the second energy absorption. The vehicle body collision energy absorbing device provided by the present application effectively improves the energy absorption effect and ensures the safety of passengers' lives and properties.
A vehicle is further provided according to the present application, which includes the vehicle body collision energy absorbing device according to any one of the above aspects. Since the aforementioned vehicle body collision energy absorbing device has the aforementioned technical effects, the vehicle having the aforementioned vehicle body collision energy absorbing device should also have the same technical effects, which will not be repeated here.

BRIEF DESCRIPTION OF THE DRAWINGS

For more clearly illustrating embodiments of the present application or technical solutions in the conventional technology, the drawing referred to for describing the embodiments or the conventional technology will be briefly described hereinafter. Apparently, the drawings in the following description are only some examples of the present application, and for those skilled in the art, other drawings may be obtained based on the provided drawings without any creative efforts.

Figure 1 is a schematic view of a first structure of a vehicle body collision energy absorbing device provided by an embodiment of the present application;
Figure 2 is a schematic view of a second structure of the vehicle body collision energy absorbing device provided by an embodiment of the present application;
Figure 3 is a schematic view of a third structure of the vehicle body collision energy absorbing device provided by an embodiment of the present application; and
Figure 4 is a schematic view of a fourth structure of the vehicle body collision energy absorbing device provided by an embodiment of the present application.

DETAILED DESCRIPTION OF EMBODIMENTS

A vehicle body collision energy absorbing device is disclosed according to the present application, so as to improve the energy absorption effect and ensure the safety of passengers' lives and properties. A vehicle including the vehicle body collision energy absorbing device is further provided according to the present application.
The technical solutions in the embodiments of the present application will be described clearly and completely hereinafter in conjunction with the drawings in the embodiments of the present application. The described embodiments are only a part of the embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all of other embodiments, made by the person skilled in the art without any creative efforts, fall into the scope of the present application.
Referring to Figure 1, a vehicle body collision energy absorbing device provided by the embodiment of the present application includes a coupler 8, a coupler mounting plate 1 and a vehicle body structure 2. The coupler 8 includes a coupler body 81 and an expansion pipe 82 that absorbs energy and expands relative to the coupler body 81. The coupler body 81 is arranged on the coupler mounting plate 1. The vehicle body structure 2 is provided with an energy absorbing cavity, and the coupler mounting plate 1 and the expansion pipe 82 are arranged in the energy absorbing cavity. The vehicle body collision energy absorbing device further includes a compression energy absorbing unit 6 arranged in the energy absorbing cavity, a locking device 3 that locks the coupler mounting plate 1 relative to the energy absorbing cavity, a retreat support 5 arranged between the coupler mounting plate 1 and the compression energy absorbing unit 6, and a shear pin 4 connecting the vehicle body structure 2 with the retreat support 5. One end of the compression energy absorbing unit 6 abuts against a rear plate of the energy absorbing cavity. The retreat support 5 is slidably arranged in the energy absorbing cavity, and is provided with a locking component and a linkage structure. The locking component unlocks the locking device 3 after being away from the coupler mounting plate 1, and the linkage structure has a positioning structure axially positioned with the expansion pipe 82. When the expansion pipe 82 drives a guide pipe 7 and the retreat support 5 to slide, the shear pin 4 breaks.
In the vehicle body collision energy absorbing device provided by the embodiment of the present application, when two high-speed trains collide with each other, the coupler 8 is impacted, and the expansion pipe 82 extends outward relative to the coupler body 81 to complete the first energy absorption; moreover, the linkage structure has a positioning structure which is axially positioned with the expansion pipe 82; after the expansion pipe 82 extends outward relative to the coupler body 81, the expansion pipe 82 drives the guide pipe 7 and the retreat support 5 to slide, and the shear pin 4 breaks, so that the retreat support 5 moves away from the coupler mounting plate 1, the locking component unlocks the locking device 3, and the locking device 3 unlocks the coupler mounting plate 1; and the coupler mounting plate 1 slides in the energy absorbing cavity under the action of the impact force and moves toward the compression energy absorbing unit 6, and the compression energy absorbing unit 6 is compressed to complete the second energy absorption. The vehicle body collision energy absorbing device provided by the embodiment of the present application effectively improves the energy absorption effect and ensures the safety of passengers' lives and properties.
As shown in Figures 2, 3 and 4, after the shear pin 4 is broken, a first shear pin portion 41 fixed in the vehicle body structure 2 and a second shear pin portion 42 fixed in the retreat support 5 are formed.
In this embodiment, the locking device 3 is a trapezoidal block which is rotatable relative to the vehicle body structure 2. An end surface of the coupler mounting plate 1 inclines towards the coupler 8 along a direction of approaching the compression energy absorbing unit 6. When the locking device 3 is in a locked state, a large end of the trapezoidal block contacts the retreat support 5, one side surface of the trapezoidal block contacts the end surface of the coupler mounting plate 1, and the other side surface of the trapezoidal block contacts the locking component. After the retreat support 5 is separated from the trapezoidal block, the trapezoidal block can rotate relative to the vehicle body structure 2 and be separated from the coupler mounting plate 1. After the retreat support 5 is away from the coupler mounting plate 1, the other side surface of the trapezoidal block is separated from the locking component, and the trapezoidal block can rotate relative to the vehicle body structure 2, so that one side surface of the trapezoidal block is separated from the end surface of the coupler mounting plate 1, and the coupler mounting plate 1 can move toward the compression energy absorbing unit 6 under the action of impact force.
Since the end surface of the coupler mounting plate 1 inclines toward the coupler 8 along a direction of approaching the compression energy absorbing unit 6, the trapezoidal block restricts the movement of the coupler mounting plate 1 when one side surface of the trapezoidal block contacts the end surface of the coupler mounting plate 1.
Preferably, the contact between one side surface of the trapezoidal block and the end surface of the coupler mounting plate 1 and the contact between the other side surface of the trapezoidal block and the locking component are both surface contact.
In order to further improve stability, the cross section of the trapezoidal block is a right-angled trapezoid. The oblique sideline of the right-angled trapezoid is located on the side surface of the trapezoidal block in contact with the end surface of the coupler mounting plate 1. The right-angle sideline of the right-angled trapezoid is located on the side surface of the trapezoidal block in contact with the locking component. The locking component is a position-limiting block provided between the trapezoidal block and the vehicle body structure 2.
The vehicle body collision energy absorbing device provided by the embodiment of the present application further includes a position-limiting protrusion arranged at an opening of the energy absorbing cavity and configured to restrict the coupler mounting plate 1 from sliding out of the energy absorbing cavity. By providing the position-limiting protrusion, the structural stability of the coupler mounting plate 1 is effectively improved without restricting the normal sliding of the coupler mounting plate 1 in the energy absorbing cavity.
Further, two position-limiting protrusions are provided and are symmetrically arranged on two sides of the opening of the energy absorbing cavity. Through the above arrangement, the stability is effectively improved. The position-limiting protrusion may have an annular structure and be arranged along the inner wall of the opening of the energy absorbing cavity.
In this embodiment, the linkage structure is a guide pipe 7 that is fixedly connected to the retreat support 5 and penetrates through the compression energy absorbing unit 6, and the guide pipe 7 is sleeved on the outside of the expansion pipe 82. Through the above arrangement, the guide pipe 7 provides a guide operation for the expansion pipe 82, which effectively avoids the situation that the expansion pipe 82 is externally located, and further improves the stability of energy absorption.
In this embodiment, the rear plate of the energy absorbing cavity is provided with an avoidance hole for the guide pipe 7 and the expansion pipe 82 to pass through. Through the above arrangement, the guide pipe 7 and the expansion pipe 82 can directly pass through the avoidance hole during the process of the guide pipe 7 and the expansion pipe 82 driving the retreat support 5 to move toward the compression energy adsorbing unit 6, the structural stability is effectively improved, and the length requirement of the energy absorbing cavity is reduced, further improving the structural stability.
In order to ensure the axial positioning of the guide pipe 7 and the expansion pipe 82, the positioning structure of the guide pipe 7 is a stepped surface. The outer surface of the expansion pipe 82 has a shoulder structure capable of cooperating with the stepped surface. It is also applicable that one end of the guide pipe 7 is closed. The axial positioning of the guide pipe 7 and the expansion pipe 82 is completed after the end of the expansion pipe 82 contacts the closed end of the guide pipe 7.
When the locking device 3 locks the coupler mounting plate 1 and the retreat support 5 is in contact with the coupler mounting plate 1, there is a certain distance between the stepped surface of the guide pipe 7 and the shoulder of the expansion pipe 82, so that the coupler mounting plate 1 is further unlocked to complete the second energy absorption operation after the expansion pipe 82 extends out relative to the coupler body 81 to complete the first energy absorption.
The distance between the stepped surface of the guide pipe 7 and the shoulder of the expansion pipe 82 is determined according to actual requirements, and is not specifically limited here.
Further, two locking devices 3 are provided and are symmetrically arranged at two ends of the coupler mounting plate 1. Through the above arrangement, the structural stability of locking the coupler mounting plate 1 is effectively improved, and the stable sliding of the coupler mounting plate 1 in the energy absorbing cavity in the unlocked state is also ensured.
A vehicle is further provided by the embodiment of the present application, which includes the vehicle body collision energy absorbing device according to any one of the above aspects. Since the aforementioned vehicle body collision energy absorbing device has the aforementioned technical effects, the vehicle having the aforementioned vehicle body collision energy absorbing device should also have the same technical effects, which will not be repeated here.
In the present specification, the embodiments are described in a progressive manner. Each embodiment mainly focuses on an aspect different from other embodiments, and reference can be made to these similar parts among the embodiments.
According to the above description of the disclosed embodiments, those skilled in the art can implement or practice the present application. Various modifications to the embodiments are apparent to the person skilled in the art, and the general principle herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Hence, the present application is not limited to the embodiments disclosed herein, but is to conform to the widest scope in accordance with the principles and novel features disclosed herein.

Claims

A vehicle body collision energy absorbing device, comprising a coupler (8), a coupler mounting plate (1) and a vehicle body structure (2); the coupler (8) comprising a coupler body (81) and an expansion pipe (82) that absorbs energy and expands relative to the coupler body (81), and the coupler body (81) being arranged on the coupler mounting plate (1);
wherein, the vehicle body structure (2) is provided with an energy absorbing cavity, and the coupler mounting plate (1) and the expansion pipe (82) are arranged in the energy absorbing cavity;
the vehicle body collision energy absorbing device further comprises a compression energy absorbing unit (6) arranged in the energy absorbing cavity, a locking device (3) that locks the coupler mounting plate (1) relative to the energy absorbing cavity, a retreat support (5) arranged between the coupler mounting plate (1) and the compression energy absorbing unit (6), and a shear pin (4) connecting the vehicle body structure (2) with the retreat support (5); and
one end of the compression energy absorbing unit (6) abuts against a rear plate of the energy absorbing cavity; the retreat support (5) is slidably arranged in the energy absorbing cavity and is provided with a locking component and a linkage structure, the locking component unlocks the locking device (3) after being away from the coupler mounting plate (1), and the linkage structure has a positioning structure axially positioned with the expansion pipe (82); and when the expansion pipe (82) drives a guide pipe (7) and the retreat support (5) to slide, the shear pin (4) breaks.
The vehicle body collision energy absorbing device according to claim 1, wherein the locking device (3) is a trapezoidal block which is rotatable relative to the vehicle body structure (2), an end surface of the coupler mounting plate (1) is inclined towards the coupler (8) along a direction of approaching the compression energy absorbing unit (6);
when the locking device (3) is in a locked state, a large end of the trapezoidal block contacts the retreat support (5), one side surface of the trapezoidal block contacts the end surface of the coupler mounting plate (1), and another side surface of the trapezoidal block contacts the locking component; and
after the retreat support (5) is separated from the trapezoidal block, the trapezoidal block is rotatable relative to the vehicle body structure (2) and is separated from the coupler mounting plate (1).
The vehicle body collision energy absorbing device according to claim 2, wherein a cross section of the trapezoidal block is a right-angled trapezoid;
an oblique sideline of the right-angled trapezoid is located on a side surface of the trapezoidal block in contact with the end surface of the coupler mounting plate (1);
a right-angle sideline of the right-angled trapezoid is located on the side surface of the trapezoidal block in contact with the locking component; and
the locking component is a position-limiting block provided between the trapezoidal block and the vehicle body structure (2).
The vehicle body collision energy absorbing device according to claim 1, further comprising a position-limiting protrusion arranged at an opening of the energy absorbing cavity and configured to restrict the coupler mounting plate (1) from sliding out of the energy absorbing cavity.
The vehicle body collision energy absorbing device according to claim 4, wherein two position-limiting protrusions are provided and are symmetrically arranged on two sides of the opening of the energy absorbing cavity.
The vehicle body collision energy absorbing device according to claim 1, wherein the linkage structure is a guide pipe (7) that is fixedly connected to the retreat support (5) and penetrates through the compression energy absorbing unit (6), and the guide pipe (7) is sleeved on the outside of the expansion pipe (82).
The vehicle body collision energy absorbing device according to claim 6, wherein the rear plate of the energy absorbing cavity is provided with an avoidance hole for the guide pipe (7) and the expansion pipe (82) to pass through.
The vehicle body collision energy absorbing device according to claim 6, wherein the positioning structure of the guide pipe (7) is a stepped surface; and
an outer surface of the expansion pipe (82) has a shoulder structure capable of cooperating with the stepped surface.
The vehicle body collision energy absorbing device according to any one of claims 1 to 8, wherein two locking devices (3) are provided and are symmetrically arranged at two ends of the coupler mounting plate (1).
A vehicle comprising a vehicle body collision energy absorbing device, wherein the vehicle body collision energy absorbing device is the vehicle body collision energy absorbing device according to any one of claims 1 to 9.