CN112744253B

CN112744253B - Energy-absorbing structure, pilot device, rail vehicle

Info

Publication number: CN112744253B
Application number: CN202110033507.7A
Authority: CN
Inventors: 刘克健; 苏超; 宋显刚; 赵红伟; 岳仁法
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2022-09-23
Anticipated expiration: 2041-01-11
Also published as: CN112744253A

Abstract

The invention discloses an energy absorption structure, a barrier removal device and a rail vehicle, wherein the energy absorption structure comprises a U-shaped frame, an energy absorption pipe front seat and an energy absorption pipe rear seat, wherein the U-shaped frame and the energy absorption pipe are all made of composite materials; and the energy absorption pipe front seat and the energy absorption pipe rear seat are both provided with metal bosses, and the energy absorption pipe and the metal bosses are mutually nested and fixed. The scheme adapts to the energy absorption requirements of different vehicle types by adjusting the quantity and the length of the energy absorption pipes, and the application range is wider; the U-shaped frame made of the composite material is used as a main body, the front seat and the rear seat of the energy absorption tube are made of metal and used as frameworks, and the weight can be effectively reduced on the basis of certain structural strength; the metal boss and the energy absorption pipe are fixed in a nesting mode, and the energy absorption pipe made of the composite material is reliably installed.

Description

Energy-absorbing structure, pilot device, rail vehicle

Technical Field

The invention relates to the technical field of vehicles, in particular to an energy absorption structure, a barrier removal device and a rail vehicle.

Background

At present, a railway passenger car realizes energy absorption during collision by a special energy absorption device, so that passive safety of the car is provided, but a bottleneck exists in the energy absorption structural design, the application is not flexible, and the energy absorption effect is difficult to further promote.

Disclosure of Invention

The invention provides an energy absorption structure, which comprises a U-shaped frame and an energy absorption pipe, wherein the U-shaped frame and the energy absorption pipe are both made of composite materials, and an energy absorption pipe front seat and an energy absorption pipe rear seat are both made of metal; and the energy-absorbing tube front seat and the energy-absorbing tube rear seat are both provided with metal bosses, and the end parts of the energy-absorbing tubes and the metal bosses are mutually nested and fixed.

Optionally, the metal boss is a metal sleeve, and an end of the energy absorption pipe is inserted into the metal sleeve, or the metal sleeve is inserted into an end of the energy absorption pipe; and/or the energy absorption pipe and the metal boss are bonded, riveted and fixed.

Optionally, the cross section of the U-shaped frame is U-shaped, a clamping groove with an inward notch is formed, the energy-absorbing tube rear seat is provided with an upper flange and a lower flange, two ends of the energy-absorbing tube rear seat are inserted into the clamping groove at the tail end of the U-shaped frame, and the upper flange, the lower flange and the top and the bottom of the clamping groove at the tail end of the U-shaped frame are fixed.

Optionally, the upper flange and/or the lower flange is/are provided with a riveting operation hole so as to rivet the energy-absorbing pipe and the metal boss arranged on the rear seat of the energy-absorbing pipe.

Optionally, the energy-absorbing tube rear seat further comprises an upper cover and/or a lower cover, the upper cover is fastened to the top of the U-shaped frame and the top of the energy-absorbing tube rear seat, and the lower cover is fastened to the bottom of the U-shaped frame and the bottom of the energy-absorbing tube rear seat.

Optionally, an adhesive tape is arranged between the upper cover and/or the lower cover and the energy absorption pipe.

Optionally, two sides of the lower cover extend out of the U-shaped frame and form a step surface, and the step surface is used for connecting a bottom plate of the obstacle deflector.

Optionally, the upper cover and/or the lower cover comprises two layers of composite material, and a foam layer or a honeycomb layer located between the two layers of composite material.

Optionally, the composite material is at least one of carbon fiber, glass fiber, aramid fiber.

The invention also provides a barrier removing device which comprises a barrier removing device and any one of the energy absorbing structures, wherein the barrier removing device comprises a barrier removing frame and a barrier removing plate positioned on the front side of the barrier removing frame, and the energy absorbing structure is arranged in the barrier removing frame.

The invention also provides a rail vehicle which comprises a vehicle head, wherein the obstacle deflector device and the main energy absorption device are arranged below the vehicle head.

In the scheme, the energy absorption structure comprises the energy absorption pipes made of the composite materials, external energy is absorbed through the crushing of the energy absorption pipes, the energy absorption requirements of different vehicle types can be met by adjusting the number and the length of the energy absorption pipes, the application range is wider and more flexible, and the energy absorption effect is better; the U-shaped frame made of the composite material is used as a main body, the front seat of the energy absorption tube and the rear seat of the energy absorption tube are made of metal and used as frameworks, and an annular space for arranging the energy absorption tube can be formed in an enclosing mode, so that the weight can be effectively reduced on the basis of certain structural strength; in addition, metal bosses are arranged on the front seat and the rear seat of the energy absorption pipe and are connected with the energy absorption pipe in a nesting and fixing mode, so that the energy absorption pipe made of the composite material is reliably installed; the energy-absorbing structure can be arranged on the barrier removal device, so that the barrier removal device also has an energy-absorbing function, and the energy-absorbing structure can be matched with a main energy-absorbing structure of a vehicle to be used, so that the energy-absorbing effect is improved.

The pilot device and rail vehicle that this scheme provided have the same technological effect, no longer give unnecessary details.

Drawings

FIG. 1 is a schematic structural view of one embodiment of an energy absorbing structure provided by the present invention;

FIG. 2 is a schematic view of the energy absorbing structure of FIG. 1 with the upper cover removed;

FIG. 3 is a schematic view of the energy absorbing tube of FIG. 2 connected to a front seat and a rear seat of the energy absorbing tube;

FIG. 4 is a schematic view of FIG. 2 with the energy absorbing tube removed;

fig. 5 is a top view of fig. 2.

The reference numerals in fig. 1-5 are illustrated as follows:

a 10-U shaped frame;

20-a metal boss;

30-energy absorbing tube front seats;

40-energy absorbing tube backseat; 401-flanging; 401 a-riveting operation hole;

50-lower cover;

60-an energy absorbing tube;

70-adhesive tape;

80-upper cover.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-2, fig. 1 is a schematic structural view of an embodiment of an energy absorbing structure according to the present invention; FIG. 2 is a schematic view of the energy absorbing structure of FIG. 1 with the upper cover 80 removed.

The energy absorbing structure in this embodiment includes a U-shaped frame 10 made of a composite material, and an energy absorbing tube 60, where the composite material may be, for example, functional fibers such as carbon fibers, glass fibers, and aramid fibers, and the composite material may include one of the fibers or a mixed fabric of at least two of the fibers. The energy-absorbing structure is arranged at the head of a vehicle after being installed, the end part of the U-shaped frame 10 faces the front of the vehicle and is defined as the front part of the U-shaped frame 10, the two sides of the front part are side parts, the two side parts are gradually expanded backwards, at least one energy-absorbing pipe 60 is preferably arranged in a plurality, three energy-absorbing pipes 60 are shown in figure 2, the energy-absorbing pipes 60 extend in the front-back direction, namely extend in the length direction of the vehicle, the energy-absorbing pipes 60 crush and deform so as to absorb external energy, mainly absorb the energy of collision, and the number and the length of the energy-absorbing pipes 60 can be adjusted to adapt to the energy-absorbing requirements of different vehicle types. In addition, the energy absorbing tube 60 may be designed to have an outer diameter gradually increasing from front to back to guide the collapsing direction, thereby improving the energy absorbing effect.

Referring to fig. 3, fig. 3 is a schematic view illustrating the connection of the energy absorbing tube 60, the energy absorbing tube front seat 30 and the energy absorbing tube rear seat 40 in fig. 2.

The energy-absorbing structure further comprises an energy-absorbing tube front seat 30 and an energy-absorbing tube rear seat 40, wherein the energy-absorbing tube front seat 30 is made of metal, the energy-absorbing tube front seat 30 is fixed to the front portion of the U-shaped frame 10, as shown in fig. 2, the cross section of the U-shaped frame 10 in the embodiment is U-shaped, an opening of the U-shaped frame faces inwards, a clamping groove (inner, which is close to and faces the middle portion of the U-shaped frame) with an inward notch is formed, at the moment, the energy-absorbing tube front seat 30 can be fixed in the clamping groove in the front portion of the U-shaped frame 10, the fixing is reliable, and the energy-absorbing tube front seat 30 can be of a plate-shaped structure shown in fig. 3. The rear part of the U-shaped frame 10 is open towards the rear, and two ends of the energy absorption tube rear seat 40 are respectively fixed with two tail ends of two side parts of the U-shaped frame 10 so as to form a closed ring shape by enclosing with the U-shaped frame 10.

In order to increase the fixing reliability, in the present embodiment, the energy absorbing tube rear seat 40 has flanges extending inward from top to bottom to form an upper flange 401 and a lower flange, as shown in fig. 2, the upper flange 401 and the lower flange are inserted and clamped in the clamping groove at the tail end of the U-shaped frame 10, and are attached and fixed to the top and the bottom of the tail end of the U-shaped frame 10, and may be specifically locked and fixed by a fastener. As shown in fig. 3, the energy-absorbing tube rear seat 40 is provided with an upper flange 401 and a lower flange, and both sides of the upper flange and the lower flange are turned forward to form side flanges, and the side flanges are abutted against and fixed with the side walls of the tail end of the U-shaped frame 10, so that a more stable connection is formed, and the energy-absorbing tube rear seat 40 can also have higher strength and has a better skeleton supporting function.

With continued reference to fig. 2 and 3 and as understood in conjunction with fig. 4, fig. 4 is a schematic view of fig. 2 with the energy absorbing tube 60 removed.

Energy-absorbing pipe 60 arranges between energy-absorbing pipe front bezel 30 and energy-absorbing pipe back bezel 40, and, energy-absorbing pipe front bezel 30 and energy-absorbing pipe back bezel 40, all be equipped with metal boss 20, the metal boss 20 of energy-absorbing pipe back bezel 40 is the same structure, metal boss 20 can integrated into one piece in energy-absorbing pipe front bezel 30 and energy-absorbing pipe back bezel 40, for the ease of processing, metal boss 20 also can be fixed to corresponding energy-absorbing pipe front bezel 30 by the components of a whole that can function independently, energy-absorbing pipe back bezel 40, in fig. 4, metal boss 20 passes through the bolt fastening to energy-absorbing pipe front bezel 30, energy-absorbing pipe back bezel 40. In addition, in the scheme, the energy absorption pipe 60 and the metal boss 20 are mutually nested and fixed.

In this embodiment, as can be seen from fig. 4, the metal boss 20 fixed to the front seat 30 of the energy absorbing tube is a metal sleeve, and the metal sleeve can be inserted into the end of the energy absorbing tube 60, it can be understood that the metal boss 20 may be a solid column, or the metal boss 20 may be a metal sleeve, and the end of the energy absorbing tube 60 may also be inserted into the metal sleeve, and this solution is not particularly limited, and no matter the energy absorbing tube 60 is inserted into the metal boss 20, or the metal boss 20 is inserted into the energy absorbing tube 60, a better installation position may be provided for the energy absorbing tube 60 made of a composite material, and the metal boss 20 is set to be a sleeve structure, and the weight may also be reduced. In addition, when the metal boss 20 is detachably fixed to the energy-absorbing tube front seat 30 and the energy-absorbing tube rear seat 40, the metal boss 20 can be replaced together with the energy-absorbing tube 60, and the operation is convenient.

In the embodiment, the energy absorption structure comprises the energy absorption pipes 60 made of composite materials, the external energy is absorbed through the crushing of the energy absorption pipes 60, the number and the length of the energy absorption pipes 60 can be adjusted to meet the energy absorption requirements of different vehicle types, the application range is wider and more flexible, and the energy absorption effect is better; the U-shaped frame 10 made of composite materials is used as a main body, the energy absorption tube front seat 30 and the energy absorption tube rear seat 40 are made of metal and used as frameworks, an annular space for arranging the energy absorption tubes 60 can be formed in an enclosing mode, and on the basis of certain structural strength, weight can be effectively reduced; in addition, the metal bosses 20 are arranged on the energy-absorbing tube front seat 30 and the energy-absorbing tube rear seat 40 and are connected with the energy-absorbing tube 60 in a nesting and fixing mode, so that the energy-absorbing tube 60 made of the composite material is reliably installed.

After the energy absorption pipe 60 and the metal boss 20 are nested, the energy absorption pipe 60 and the metal boss 20 can be further fixed in a sticking riveting mode, namely, the energy absorption pipe 60 and the metal boss 20 are bonded and riveted at the same time, so that the stability and the reliability of the fixation of the energy absorption pipe 60 and the metal boss 20 are improved. After the end of the energy absorbing pipe 60 is nested with the metal boss 20, a plurality of riveting points can be riveted along the circumferential direction by a riveting gun, preferably, the riveting points are uniformly arranged along 360 degrees along the circumferential direction, for example, four riveting points are formed at intervals of 90 degrees.

Continuing with fig. 4 and 5, fig. 5 is a top view of fig. 2.

The energy-absorbing tube rear seat 40 comprises an upper flanging 401 and a lower flanging, at least one of the upper flanging 401 and the lower flanging can be provided with a riveting operation hole 401a, the riveting operation hole 401a is formed in the upper flanging 401 in fig. 4, a riveting gun can stretch into the riveting operation hole 401a to rivet the energy-absorbing tube 60 and the metal boss 20 arranged on the energy-absorbing tube rear seat 40, interference of the upper flanging 401 on riveting operation is avoided, and riveting work is facilitated. For the sticking riveting of the energy-absorbing tube 60 and the energy-absorbing tube front seat 30, the energy-absorbing tube front seat 30 and the energy-absorbing tube 60 can be nested, stuck and riveted firstly, and then the U-shaped frame 10 is installed, so that the top of the front part of the U-shaped frame 10 can not interfere with the riveting.

With continued reference to fig. 1, the energy absorbing structure includes an upper cover 80 and a lower cover 50, the upper cover 80 is fastened and fixed on the top of the U-shaped frame 10, the lower cover 50 is fastened and fixed on the bottom of the U-shaped frame 10, and the upper cover 80 and the lower cover 50 are fixed on the top and bottom of the energy absorbing tube rear seat 40 at the same time, and the fixing manner may be rivet bonding to ensure the reliability of the fixing. The arrangement of the upper cover 80 and the lower cover 50 enables the energy absorption structure to be an energy absorption box, the sealing performance of the whole energy absorption structure is guaranteed, the strength of the whole structure is improved, and of course, only one of the upper cover 80 and the lower cover 50 can be arranged.

In addition, in this embodiment, the upper cover 80 and the lower cover 50 may be a sandwich structure, that is, the upper cover 80 and the lower cover 50 may include two composite material layers, and a foam layer or a honeycomb layer between the two composite material layers. The upper cover 80 and the lower cover 50 have the advantages of light weight and high strength. The composite material layers of the upper cover 80 and the lower cover 50 may be made of functional fiber materials such as carbon fiber and glass fiber.

Further, as shown in fig. 2, an adhesive tape 70 is further disposed between the upper cover 80, the lower cover 50 and the energy absorbing tube 60, and the adhesive tape 70 may be a rubber adhesive tape without adhesiveness or an adhesive for adhering the upper cover 80, the lower cover 50 and the energy absorbing tube 60. After the rubber strip 70 is arranged, under the extrusion of the upper cover 80 and the lower cover 50, the rubber strip 70 deforms, so that the energy absorption tube 60 is compressed, the energy absorption tube 60 is prevented from vibrating in the energy absorption box, the energy absorption tube 60 is protected, the energy absorption tube 60 is prevented from displacing, and the energy absorption function is kept to be fully exerted. As shown in FIG. 2, the rubber strips 70 extend transversely, more than one rubber strip 70 can be arranged, and after the upper cover 80, the lower cover 50 and the U-shaped frame 10 are assembled, each rubber strip 70 simultaneously presses a plurality of energy absorbing pipes 60.

As shown in fig. 2, both sides of the lower cover 50 extend out of the U-shaped frame 10 and form a step surface for connecting a barrier remover, particularly, a bottom plate of the barrier remover. The main frame of the obstacle deflector is of a U-shaped structure, the front part of the obstacle deflector is provided with an obstacle deflector for removing obstacles on a railway, in the scheme, the energy absorption structure is also of a U shape to be arranged in the obstacle deflector in a matching way, step surfaces extend from two sides of a lower cover 50 of the energy absorption structure, and then the step surfaces can extend to the lower part of a bottom plate of the obstacle deflector, so that the step surfaces are connected with the bottom plate of the obstacle deflector, and the energy absorption structure can be conveniently installed on the obstacle deflector.

The embodiment also provides a barrier removal device, which comprises a barrier removal device and the energy absorption structure in any embodiment, wherein the barrier removal device comprises a main body frame and a barrier removal plate positioned on the front side of the main body frame, the energy absorption structure is arranged in the main body frame, and the barrier removal device has the same technical effect as the energy absorption structure in any embodiment. In addition, locate the obstacle deflector with the energy-absorbing structure for the obstacle deflector device also has the energy-absorbing function concurrently, can use with rail vehicle's main energy-absorbing device cooperation, as supplementary energy-absorbing device, in order to promote the energy-absorbing effect. Of course, the main energy absorption device is not arranged according to different types of railway vehicles, and the energy absorption structure of the barrier removal device can absorb energy.

This embodiment still provides a rail vehicle, including the locomotive, the below of locomotive sets up as above the pilot device, has the same technological effect, does not give unnecessary details.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. An energy absorption structure is characterized by comprising a U-shaped frame (10) and an energy absorption pipe (60), wherein the U-shaped frame (10) and the energy absorption pipe are both made of composite materials, and an energy absorption pipe front seat (30) and an energy absorption pipe rear seat (40) are both made of metal, the energy absorption pipe front seat (30) is fixed on the inner side of the front part of the U-shaped frame (10), two ends of the energy absorption pipe rear seat (40) are respectively fixed with two tail ends of the U-shaped frame (10), and the energy absorption pipe (60) is fixed between the energy absorption pipe front seat (30) and the energy absorption pipe rear seat (40); the energy absorption pipe front seat (30) and the energy absorption pipe rear seat (40) are both provided with metal bosses (20), and the end parts of the energy absorption pipes (60) and the metal bosses (20) are mutually nested and fixed;

the cross section of the U-shaped frame (10) is U-shaped, a clamping groove with an inward notch is formed, an upper flanging (401) and a lower flanging are arranged on the energy absorption tube rear seat (40), two ends of the energy absorption tube rear seat (40) are inserted into the clamping groove at the tail end of the U-shaped frame (10), and the upper flanging and the lower flanging are fixed with the top and the bottom of the clamping groove at the tail end of the U-shaped frame (10);

the energy absorption pipe (60) and the metal boss (20) are fixed in a sticking and riveting mode; and the upper flanging (401) and/or the lower flanging are/is provided with riveting operation holes (401a) so as to rivet the energy-absorbing pipe (60) and the metal boss (20) arranged on the energy-absorbing pipe rear seat (40).

2. Energy absorbing structure according to claim 1, characterized in that the metal boss (20) is a metal sleeve into which the end of the energy absorbing tube (60) is inserted or into which the end of the energy absorbing tube (60) is inserted.

3. The energy absorbing structure of claim 1, further comprising an upper cover (80) and/or a lower cover (50), wherein the upper cover (80) is fastened to the top of the U-shaped frame (10) and the energy absorbing tube rear seat (40), and the lower cover (50) is fastened to the bottom of the U-shaped frame (10) and the energy absorbing tube rear seat (40).

4. Energy-absorbing structure according to claim 3, characterized in that an adhesive strip (70) is provided between the upper cover (80) and/or the lower cover (50) and the energy-absorbing tube (60).

5. Energy absorbing structure according to claim 3, characterized in that the lower cover (50) extends beyond the U-shaped frame (10) on both sides and forms a step surface for attachment of a floor of a barrier drain.

6. Energy absorbing structure according to claim 3, characterized in that the upper cover (80) and/or the lower cover (50) comprises two layers of composite material, and a foam layer or a honeycomb layer between the two layers of composite material.

7. The energy absorbing structure of any of claims 1-6, wherein the composite material comprises at least one of carbon fibers, glass fibers, aramid fibers.

8. A barrier removing device, comprising a barrier removing device and an energy absorbing structure as claimed in any one of claims 1 to 7, wherein the barrier removing device comprises a barrier removing frame and a barrier removing plate positioned at the front side of the barrier removing frame, and the energy absorbing structure is arranged in the barrier removing frame.

9. The rail vehicle comprises a vehicle head, and is characterized in that the obstacle deflector device as claimed in claim 8 and a main energy absorption device are arranged below the vehicle head.