CN217260280U - Tail crossbeam, frame and passenger train - Google Patents

Abstract

The utility model provides a tail crossbeam, a frame and a passenger car, wherein the tail crossbeam comprises a main body, and the main body comprises a front plate, a top plate, a bottom plate, a first side plate and a second side plate; the top plate and the bottom plate are respectively connected to the top edge and the bottom edge of the front plate, and both the top plate and the bottom plate extend towards the head of the frame; the top plate is internally accommodated in the bottom plate, and the orthographic projection of the top plate on the bottom plate is positioned in the coverage range of the bottom plate; the first side plate and the second side plate are connected to two ends of the front plate respectively, the first side plate and the second side plate extend towards the head of the frame, the top end of the first side plate and the top end of the second side plate are connected to two ends of the top plate respectively, and the bottom end of the first side plate and the bottom end of the second side plate are connected to two ends of the bottom plate respectively. The utility model provides a tail crossbeam, frame and passenger train, the area of roof reduces, can increase the space that tail crossbeam and two longerons enclose, and first curb plate and second curb plate can form the support between roof and bottom plate to satisfy power device's space demand and reliability demand simultaneously.

Description

Tail crossbeam, frame and passenger train

Technical Field

The utility model relates to a passenger train technical field especially relates to a tail crossbeam, frame and passenger train.

Background

The passenger car is a commercial vehicle which can be used for carrying passengers and carry-on luggage of the passengers (including a driver seat) by more than 9 persons, and is generally a square carriage.

In the related art, the passenger car is usually of a rear-drive type, that is, the power device of the passenger car is usually installed at the tail of the passenger car, and the volume of the power device is also huge because the carrying capacity of the passenger car is large, especially the volume of a large passenger car and a large passenger car power device is very huge. Meanwhile, the mass of the power device is large, and the reliability design of the parts near the power device is also important due to the influence of the rotational inertia.

However, the design of the tail frame of the existing passenger car is difficult to meet the space requirement and the reliability requirement of the power device at the same time.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tail crossbeam, frame and passenger train for the design of the afterbody frame of solving current passenger train is difficult to satisfy power device's space demand and the problem of reliability demand simultaneously.

The utility model provides a tail beam which is arranged at the tail part of a frame of a passenger car and comprises a main body, wherein the main body comprises a front plate, a top plate, a bottom plate, a first side plate and a second side plate;

the top plate and the bottom plate are respectively connected to the top edge and the bottom edge of the front plate, and both the top plate and the bottom plate extend towards the head of the frame; the top plate is internally accommodated in the bottom plate, and the orthographic projection of the top plate on the bottom plate is positioned in the coverage range of the bottom plate;

the first side plate and the second side plate are connected to two ends of the front plate respectively, the first side plate and the second side plate extend towards the head of the frame, the top end of the first side plate and the top end of the second side plate are connected to two ends of the top plate respectively, and the bottom end of the first side plate and the bottom end of the second side plate are connected to two ends of the bottom plate respectively.

The utility model provides a tail crossbeam, comprising a main body, the main part includes the front bezel, the roof, the bottom plate, first curb plate and second curb plate, roof and bottom plate are connected respectively in the topside and the base of front bezel, and roof and bottom plate all extend to the head of frame, with the intensity of strengthening the front bezel, roof and bottom plate support jointly between two longerons of frame, first curb plate and second curb plate are connected respectively at the both ends of front bezel, and first curb plate and second curb plate all extend to the head of frame, first curb plate and second curb plate are connected with the longeron of frame, the tail crossbeam constitutes the skeleton of passenger train together with the longeron and other crossbeams of frame. The top plate of the tail cross beam is internally accommodated in the bottom plate, the orthographic projection of the top plate on the bottom plate is positioned in the coverage range of the bottom plate, the area of the top plate is reduced, the space enclosed by the tail cross beam and the two longitudinal beams can be increased, and enough installation space is reserved for the power device; the top of first curb plate and the top of second curb plate are connected with the both ends of roof respectively, and the bottom of first curb plate and the bottom of second curb plate are connected with the both ends of bottom plate respectively, and first curb plate and second curb plate can form the support between roof and bottom plate, strengthen the structural strength of tail crossbeam to satisfy power device's space demand and reliability demand simultaneously.

In one implementation, the central region of the top plate has an avoidance gap, which is recessed toward the front plate.

In one implementation, the width of the top plate gradually decreases from the two ends of the top plate to the edges of the corresponding sides of the avoidance gap.

In one implementation, the first side plate and the second side plate are both provided with a plurality of mounting holes.

In one implementation mode, lightening holes are formed in the first side plate and the second side plate, the lightening holes are located in the middle area of the first side plate and the second side plate in the height direction, and the mounting holes are distributed on two sides of the lightening holes.

In one implementation, the body is an integrally formed structure.

In one implementation, the panel further comprises at least one first reinforcing member, wherein the first reinforcing member comprises a first plate portion, a second plate portion and a bent portion;

one side of the first plate part and one side of the second plate part are connected with the front plate, the side edges of the first plate part and the second plate part connected with the front plate are far away from each other, the bent part is positioned between the side edges of the first plate part and the second plate part departing from the front plate, and the first plate part is close to the central area of the main body;

the top of first board and the top of second board all are connected with the roof, and the bottom of first board and the bottom of second board all are connected with the bottom plate.

In one implementation, the angle between the second plate portion and the front plate is equal to 90 °.

In one implementation, the number of the first reinforcing members is two, and the two first reinforcing members are symmetrically arranged with the center line of the front plate as the symmetry axis.

In an implementation mode, the roof panel structure further comprises a second reinforcing part, the second reinforcing part comprises an upper wing panel, an intermediate connecting plate and a lower wing panel which are sequentially connected, the upper wing panel is connected with the top plate, the intermediate connecting plate is attached to the front plate, and the lower wing panel is connected with the bottom plate.

In one implementation, the second stiffener is located at a central region of the front panel and the first stiffener is located laterally of the second stiffener.

The utility model also provides a frame, which is applied to a passenger car and comprises a first longitudinal beam, a second longitudinal beam and any one of the tail cross beams;

first longeron and second longeron all extend along the length direction of passenger train, and first longeron and second longeron set up along the width direction interval of passenger train, and the one end that is close to the afterbody of passenger train of first longeron and second longeron is tail end between them respectively, the first curb plate of tail crossbeam and the trailing end connection of first longeron, the second curb plate of tail crossbeam and the trailing end connection of second longeron.

The utility model provides a frame, which comprises a first longitudinal beam, a second longitudinal beam and a tail cross beam, wherein the first longitudinal beam, the second longitudinal beam and the tail cross beam can form a framework of a passenger car together with other cross beams of the frame; the first longitudinal beam and the second longitudinal beam extend along the length direction of the passenger car, the first longitudinal beam and the second longitudinal beam are arranged at intervals along the width direction of the passenger car, the ends, close to the tail part of the passenger car, of the first longitudinal beam and the second longitudinal beam are tail ends of the first longitudinal beam and the second longitudinal beam respectively, and the tail cross beam is connected between the tail ends of the first longitudinal beam and the second longitudinal beam; specifically, the main part of tail crossbeam includes front bezel, roof, bottom plate, first curb plate and second curb plate, and first curb plate and second curb plate are connected respectively at the both ends of front bezel, and just first curb plate and second curb plate all extend to the head of frame, and first curb plate and second curb plate are connected respectively at the tail end of first longeron and second longeron. The top plate of the tail cross beam is internally accommodated in the bottom plate, the orthographic projection of the top plate on the bottom plate is positioned in the coverage range of the bottom plate, the area of the top plate is reduced, the space surrounded by the tail cross beam, the first longitudinal beam and the second longitudinal beam can be enlarged, and enough installation space is reserved for the power device; the top of first curb plate and the top of second curb plate are connected with the both ends of roof respectively, and the bottom of first curb plate and the bottom of second curb plate are connected with the both ends of bottom plate respectively, and first curb plate and second curb plate can form the support between roof and bottom plate, strengthen the structural strength of tail crossbeam to satisfy power device's space demand and reliability demand simultaneously.

The utility model also provides a passenger car, it includes power device and above-mentioned frame, and power device is located between the first longeron and the second longeron of frame to be close to the tail crossbeam setting of frame.

The utility model provides a passenger car, which comprises a power device and a car frame. The power device is arranged between the first longitudinal beam and the second longitudinal beam of the frame and close to the tail cross beam of the frame, the area of the top plate is reduced, enough installation space is reserved for the power device, and the situation that the distance between the power device and the top plate of the tail cross beam is too small is avoided; the top of first curb plate and the top of second curb plate are connected with the both ends of roof respectively, and the bottom of first curb plate and the bottom of second curb plate are connected with the both ends of bottom plate respectively, and first curb plate and second curb plate can form the support between roof and bottom plate, strengthen the structural strength of tail crossbeam to satisfy power device's space demand and reliability demand simultaneously.

The structure of the present invention and other objects and advantages thereof will be more apparent from the description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

The above and other objects, features and advantages of the embodiments of the present invention will become more readily understood from the following detailed description with reference to the accompanying drawings. Embodiments of the invention will be described, by way of example and not by way of limitation, in the accompanying drawings, in which:

FIG. 1 is a schematic view of a prior art tail boom;

fig. 2 is a schematic view of a tail boom provided by an embodiment of the present invention;

FIG. 3 is an exploded view of FIG. 2;

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

FIG. 5 is a side view of FIG. 3;

fig. 6 is a schematic view of a vehicle frame provided in the embodiment of the present invention.

Reference numerals are as follows:

100-tail beam; 110-a body; 111-a front plate; 112-a top plate; 1121-avoiding the gap; 113-a backplane; 114-a first side panel; 1141-a first mounting hole; 1142-first lightening holes; 115-a second side panel; 1151-a second mounting hole; 1152-a second lightening hole; 120-a first stiffener; 121-a first plate portion; 122-a bending part; 123-a second plate portion; 130-a second stiffener; 131-an upper wing plate; 132-an intermediate connection plate; 133-lower wing plate;

200-a first stringer;

300-second stringer.

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 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 drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Passenger vehicles include a frame, a power unit, and a housing, where the frame is the base member that supports the body of the passenger vehicle, commonly referred to as a chassis frame. The power device and the shell are fixed on the frame, and the frame can bear the static load and the dynamic load generated when the passenger car runs, so that the frame has enough strength and rigidity to ensure that the passenger car cannot be damaged or deformed under various stresses when in normal use. The power device mainly refers to an engine, the mass of the engine is large, and the reliability design of parts near the power device is particularly important due to the influence of the rotational inertia.

In the related art, the frame mainly has two types, namely, a side beam type and a middle beam type, and the side beam type is the most widely used frame. The edge beam type frame is formed by riveting or welding two long longitudinal beams and a plurality of short cross beams, the longitudinal beams mainly bear bending load, and generally adopt channel-shaped steel beams with larger bending strength; the cross beam is in a groove shape, a pipe shape or a mouth shape to ensure the torsional rigidity and the bending strength of the frame, wherein the cross beam arranged at the tail part of the passenger car is called a tail cross beam.

FIG. 1 is a schematic view of a prior art tail boom. The tail cross beam shown in fig. 1 is a common groove-shaped structure, the area size and the shape of an upper wing plate 01 and a lower wing plate 02 of the tail cross beam are the same, the tail cross beam has high bending strength, and two ends of the upper wing plate 01 and two ends of the lower wing plate 02 of the tail cross beam can be respectively installed at the tail parts of two longitudinal beams through connecting plates.

The passenger car is usually of a rear-drive type, that is, the power device is usually installed at the tail of the passenger car, and specifically, the power device is usually installed between two longitudinal beams of the frame and is arranged close to a tail cross beam. Because of the large carrying capacity of the passenger car, the power device of the passenger car is also large in size, and particularly the large passenger car and the large passenger car are large in size. Therefore, the installation space enclosed by the two longitudinal beams and the tail cross beam of the frame should be large enough.

However, the design of the tail frame of the existing passenger car is difficult to meet the space requirement and the reliability requirement of the power device at the same time.

Through repeated thinking and verification, the applicant finds that if the distance between the two longitudinal beams is increased, the structural strength of the frame is changed, the arrangement form of the whole vehicle needs to be redesigned, the workload is huge, and the feasibility is low; then, the applicant thought that the width of the tail boom in the x direction could be reduced to increase the installation space, but the reduction in size of the upper panel 01 and the lower panel 02 of the tail boom would significantly reduce the structural strength of the tail boom, and at the same time, the mode of the entire frame (the mode is the natural vibration characteristic of the structural system) would also be reduced.

In view of this, the embodiment of the present invention provides a tail beam, a frame and a passenger car, wherein the tail beam includes a main body, the main body includes a front plate, a top plate, a bottom plate, a first side plate and a second side plate, the top plate is enclosed in the bottom plate, and an orthographic projection of the top plate on the bottom plate is located in a coverage area of the bottom plate, so as to meet a space requirement of a power device; the first side plate and the second side plate are connected to the two ends of the front plate respectively, the top end of the first side plate and the top end of the second side plate are connected to the two ends of the top plate respectively, and the bottom end of the first side plate and the bottom end of the second side plate are connected to the two ends of the bottom plate respectively, so that the reliability requirements of the power device are met simultaneously.

The following will explain in detail the tail boom, the frame and the passenger car provided by the embodiments of the present invention with reference to the attached drawings.

Example one

Fig. 2 is a schematic view of a tail beam provided in an embodiment of the present invention; fig. 3 is an exploded view of fig. 2. As shown in fig. 2, the embodiment of the present invention provides a tail beam 100, and this tail beam 100 includes a main body 110, as the name suggests, the tail beam 100 is installed in the afterbody of the frame of the passenger car, and the concrete mountable is between two longerons of the frame, and the tail beam 100 constitutes the skeleton of the passenger car together with the longerons and other crossbeams of the frame.

As shown in fig. 3, the main body 110 of the tail boom 100 includes a front plate 111, a top plate 112, a bottom plate 113, a first side plate 114, and a second side plate 115. The top plate 112 and the bottom plate 113 of the tail cross beam 100 are respectively connected to the top edge and the bottom edge of the front plate 111, and the top plate 112 and the bottom plate 113 both extend towards the head of the frame, wherein the top plate 112 is internally accommodated in the bottom plate 113, the orthographic projection of the top plate 112 on the bottom plate 113 is located in the coverage range of the bottom plate 113, the area of the top plate 112 is reduced, the space enclosed by the tail cross beam 100 and the two longitudinal beams can be increased, and enough installation space is reserved for a power device so as to meet the space requirement of the power device.

Specifically, the middle region of the top plate 112 may have an avoidance gap 1121, and the avoidance gap 1121 is recessed toward the front plate 111. The avoidance notch 1121 can avoid a protruding portion of the power device installed near the avoidance notch, so as to reserve a sufficient installation space for the power device, and avoid that the power device is too small in installation space, so that the impact on the top plate 112 caused by too small a reserved distance between the power device and the top plate 112 of the tail cross beam 100 is avoided.

In addition, the first side plate 114 and the second side plate 115 are connected to two ends of the front plate 111 respectively, the first side plate 114 and the second side plate 115 extend towards the head of the frame, the top end of the first side plate 114 and the top end of the second side plate 115 are connected to two ends of the top plate 112 respectively, the bottom end of the first side plate 114 and the bottom end of the second side plate 115 are connected to two ends of the bottom plate 113 respectively, the first side plate 114 and the second side plate 115 can form a support between the top plate 112 and the bottom plate 113, and the structural strength of the tail beam 100 is enhanced, so that the reliability requirement of the power device is met at the same time.

For example, a plurality of mounting holes may be formed in each of the first side plate 114 and the second side plate 115, the first side plate 114 and the second side plate 115 may be mounted on a longitudinal beam of the vehicle frame by bolts, and the connection surface between the tail cross beam 100 and the longitudinal beam is increased, which facilitates the lifting of the local mode of the vehicle frame.

The mounting hole on the first side plate 114 is referred to as a first mounting hole 1141, and the mounting hole on the second side plate 115 is referred to as a second mounting hole 1151. Specifically, the first side plate 114 may be provided with 6 first mounting holes 1141, and the second side plate 115 may also be provided with 6 second mounting holes 1151, so as to ensure the stability of the connection between the first side plate 114 and the second side plate 115 and the longitudinal beam of the vehicle frame.

As shown in fig. 3, the width of the top plate 112 may gradually decrease from two ends of the top plate 112 to the edge of the corresponding side of the avoidance gap 1121, that is, the width of the top plate 112 in the y direction in fig. 3 may gradually decrease. The width of both ends of the top plate 112 is still wide, and the width of the top plate 112 is gradually reduced in the direction from both ends of the top plate 112 to the relief notch 1121, so that when the width of the top plate 112 is reduced, the area of the top plate 112 is kept as large as possible, and the top plate 112 still has a good structural strength. Moreover, the width of the two ends of the top plate 112 is kept consistent with that of the bottom plate 113, and the top plate 112 is also convenient to be connected with the first side plate 114 and the second side plate 115 on the two sides, so that the first side plate 114 and the second side plate 115 have enough area to be stably connected with the longitudinal beam of the frame.

In order to reduce the weight of the tail beam 100, the first side plate 114 and the second side plate 115 may be provided with lightening holes, the lightening holes may be located in the middle area in the height direction of the first side plate 114 and the second side plate 115, and the mounting holes are distributed on two sides of the lightening holes. The mounting holes on the first side plate 114 are referred to as first lightening holes 1142, and the mounting holes on the second side plate 115 are referred to as second lightening holes 1152. During design, the shape and size of the lightening holes can be designed according to the result of topology optimization (topology optimization, which is a mathematical method for optimizing material distribution in a given area according to given load conditions, constraint conditions and performance indexes, and is a structural optimization) on the basis of not influencing overall performance.

In the example, the lightening holes can be of an open structure, so that the area of the lightening holes is increased on the basis of not influencing the overall performance, and a good lightening effect is achieved; in other examples, the lightening holes may also be closed structures.

During actual production, the main body 110 can be an integrally formed structure, so that the assembly process can be simplified, the overall rigidity of the tail beam 100 can be improved, and the structural strength of the tail beam 100 is enhanced.

In addition to the main body 110, the tail boom 100 may further include a reinforcing structure, which may be installed between the top plate 112 and the bottom plate 113 of the main body 110 to reinforce the structural strength of the main body 110.

Fig. 4 is a top view of fig. 3. As shown in fig. 3 and 4, the tail boom 100 provided in the present embodiment may further include a reinforcing structure connected to the main body 110 to reinforce the structural strength of the main body 110. The reinforcing structure includes at least one first reinforcing member 120, and the first reinforcing member 120 includes a first plate portion 121, a second plate portion 123, and a bent portion 122. One side of the first plate portion 121 and the second plate portion 123 is connected to the front plate 111, the sides of the first plate portion 121 and the second plate portion 123 connected to the front plate 111 are far away from each other, the bent portion 122 is located between the sides of the first plate portion 121 and the second plate portion 123 far away from the front plate 111, and the first plate portion 121 is close to the central area of the main body 110; the top end of the first plate portion 121 and the top end of the second plate portion 123 are connected to the top plate 112, and the bottom end of the first plate portion 121 and the bottom end of the second plate portion 123 are connected to the bottom plate 113. The first reinforcement 120 is supported between the top plate 112 and the bottom plate 113 to further increase the structural strength of the tail boom 100 in increasing the stiffness of the central region near the body 110.

Specifically, the top end of the first plate portion 121 and the top end of the second plate portion 123 can be both connected to the top plate 112 in a welded manner, and the bottom end of the first plate portion 121 and the bottom end of the second plate portion 123 can be both connected to the bottom plate 113 in a welded manner, so that the joint between the top end of the first plate portion 121 and the top end of the second plate portion 123 and the top plate 112, the joint between the bottom end of the first plate portion 121 and the bottom end of the second plate portion 123 and the bottom plate 113 are strengthened, and the reliability of connection is ensured.

For example, the angle between the second plate portion 123 and the front plate 111 may be equal to 90 °, and the second plate portion 123 is parallel to the first side plate 114 and the second side plate 115, which may form an effective support in the width direction of the top plate 112 and the bottom plate 113 to enhance the structural strength of the tail beam 100.

It should be noted that all values and ranges of values mentioned herein as 90 ° and referred to hereinafter are approximate values, and that there may be a range of errors depending on the manufacturing process, which may be considered negligible by those skilled in the art.

Meanwhile, the included angle between the first plate portion 121 and the front plate 111 may be less than 90 °, and the distance between the first plate portion 121 and the front plate 111 is gradually decreased in the direction in which both ends of the main body 110 approach the central region of the main body 110, corresponding to the shape of the top plate 112, to effectively support the top plate 112. The smaller the angle between the first plate portion 121 and the front plate 111 is, the slower the distance between the first plate portion 121 and the front plate 111 is, specifically, the angle between the first plate portion 121 and the front plate 111 may be 30 °, 20 °, 10 °, or the like.

In practice, the first plate portion 121 may be a straight plate for easy manufacturing; alternatively, the first plate portion 121 may be an arc-shaped plate bent toward the front plate 111 to increase the length of the first plate portion 121 and enhance the supporting effect of the first plate portion 121.

In addition, since the top plate 112 has a symmetrical shape, the width of the top plate 112 gradually decreases from the two ends of the top plate 112 to the corresponding side edges of the avoidance gap 1121. Correspondingly, the number of the first reinforcing members 120 can be two, and the two first reinforcing members 120 are symmetrically arranged with the center line of the front plate 111 as the symmetry axis, so as to ensure that all parts of the tail beam 100 have good structural strength and avoid the phenomenon of stress concentration.

Fig. 5 is a side view of fig. 3. As shown in fig. 3 and 5, the reinforcing structure provided in this embodiment may further include a second reinforcing member 130, where the second reinforcing member 130 includes an upper wing plate 131, a middle connecting plate 132, and a lower wing plate 133, which are sequentially connected, the upper wing plate 131 is connected to the top plate 112, the middle connecting plate 132 is attached to the front plate 111, and the lower wing plate 133 is connected to the bottom plate 113. The middle connecting plate 132 is used for reinforcing the thickness of part of the front plate 111, the upper wing plate 131 can form a triangular support between the top plate 112 and the front plate 111, and the lower wing plate 133 can form a triangular support between the bottom plate 113 and the front plate 111, so as to enhance the bending rigidity and the torsional rigidity of the tail beam 100, and the tail beam 100 has better bending resistance and torsional resistance.

Specifically, the upper wing plate 131 may be welded to the top plate 112, and the lower wing plate 133 may be welded to the bottom plate 113, so as to enhance the connection strength and ensure the reliability of the connection.

In this embodiment, the second reinforcement member 130 may be located at a central region of the front panel 111, and the first reinforcement member 120 may be located at a side of the second reinforcement member 130 to enhance the structural strength of the middle portion of the tail boom 100. As shown in fig. 5, since the middle region of the top plate 112 has the avoidance gap 1121, the width of the middle region of the top plate 112 is narrower, and the upper wing panel 131 of the second reinforcement 130 extends a short distance so that the upper wing panel 131 can be covered under the top plate 112, and the upper wing panel 131 can be connected with the top plate 112 to enhance the rigidity of the middle region of the tail beam 100.

In actual production, the first reinforcing member 120 and the second reinforcing member 130 may be formed by bending a metal plate such as a steel plate or an aluminum alloy plate.

Example two

Fig. 6 is a schematic view of a vehicle frame provided in the embodiment of the present invention. As shown in fig. 6, the embodiment of the present invention further provides a vehicle frame, which includes a first longitudinal beam 200, a second longitudinal beam 300, and the tail cross beam 100 of the first embodiment. First longeron 200 and second longeron 300 all extend along the length direction of passenger train, and first longeron 200 and second longeron 300 set up along the width direction interval of passenger train, and the one end that is close to the afterbody of passenger train of first longeron 200 and second longeron 300 is both tail ends respectively, and the first curb plate 114 of tail crossbeam 100 and the trailing end connection of first longeron 200, the second curb plate 115 of tail crossbeam 100 and the trailing end connection of second longeron 300.

The top plate 112 of the tail cross beam 100 is internally accommodated in the bottom plate 113, the orthographic projection of the top plate 112 on the bottom plate 113 is located in the coverage range of the bottom plate 113, the area of the top plate 112 is reduced, the space surrounded by the tail cross beam 100, the first longitudinal beam 200 and the second longitudinal beam 300 can be increased, enough installation space is reserved for the power device, and the space requirement of the power device is met.

In addition, the top end of the first side plate 114 and the top end of the second side plate 115 are respectively connected with two ends of the top plate 112, the bottom end of the first side plate 114 and the bottom end of the second side plate 115 are respectively connected with two ends of the bottom plate 113, and the first side plate 114 and the second side plate 115 can form a support between the top plate 112 and the bottom plate 113, so that the structural strength of the tail beam 100 is enhanced; the middle region of the tail boom 100 may also be provided with a first stiffener 120 and a second stiffener 130 to meet power plant reliability requirements simultaneously.

The frame that this embodiment provided is applied to the passenger train, and the frame of passenger train mainly is the boundary beam formula frame, and the simple structure of boundary beam formula frame, the technological requirement is low, and it is easy to make, uses extensively. The edge beam type frame is formed by riveting or welding a first longitudinal beam 200, a second longitudinal beam 300 and a plurality of cross beams, the first longitudinal beam 200 and the second longitudinal beam 300 mainly bear bending load, and channel-shaped steel beams with high bending strength can be adopted. The cross member of this embodiment may also be in a channel shape to ensure torsional rigidity and bending strength of the vehicle frame, wherein the cross member connected to the rear portion of the vehicle frame is the rear cross member 100.

The structure and function of the tail beam 100 are described in detail in the first embodiment, and are not described herein again.

EXAMPLE III

The utility model also provides a passenger train, this passenger train include the frame that power device and embodiment two provided, and power device is located between the first longeron 200 and the second longeron 300 of frame to the tail crossbeam 100 that is close to the frame sets up. The power plant is mainly referred to as an engine.

The structure of the passenger car is mainly non-load bearing type, and the non-load bearing type passenger car is provided with a frame, and the frame is also called a chassis beam frame. The passenger car also comprises a shell, wherein the shell of the passenger car is generally a box-type shell, and the shell is suspended on the car frame and is connected with the car frame through an elastic element. The vibration of the frame is transmitted to the shell through the elastic element, most of the vibration is weakened or eliminated, most of impact force can be absorbed by the frame when collision occurs, and the frame can protect the shell when the passenger car runs on a bumpy road.

The structure and function of the frame are described in detail in the second embodiment, and are not described again here.

In the description of the present invention, it is to be understood that the terms "length", "width", "thickness", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims (13)

1. A tail cross beam is arranged at the tail part of a frame of a passenger car and is characterized by comprising a main body, wherein the main body comprises a front plate, a top plate, a bottom plate, a first side plate and a second side plate;

the top plate and the bottom plate are respectively connected to the top edge and the bottom edge of the front plate, and both the top plate and the bottom plate extend towards the head of the frame; the top plate is accommodated in the bottom plate, and the orthographic projection of the top plate on the bottom plate is positioned in the coverage range of the bottom plate;

the first side plate and the second side plate are connected to two ends of the front plate respectively, the first side plate and the second side plate extend towards the head of the frame, the top end of the first side plate and the top end of the second side plate are connected to two ends of the top plate respectively, and the bottom end of the first side plate and the bottom end of the second side plate are connected to two ends of the bottom plate respectively.

2. The tail boom of claim 1, wherein the middle region of the top panel has an escape notch that is recessed toward the front panel.

3. The tail boom of claim 2, wherein the width of the roof panel gradually decreases from both ends of the roof panel to the edges of the respective sides of the relief notch.

4. The tail boom according to any of claims 1-3, wherein a plurality of mounting holes are provided on each of the first side plate and the second side plate.

5. The tail beam according to claim 4, wherein each of the first side plate and the second side plate is provided with a lightening hole, the lightening hole is located in a middle area in a height direction of the first side plate and the second side plate, and the mounting holes are distributed on two sides of the lightening hole.

6. The tail boom of any of claims 1-3, wherein the body is a unitary structure.

7. The tail boom of any of claims 1-3, further comprising at least one first stiffener comprising a first plate portion, a second plate portion, and a bend portion;

the side edges of the first plate part and the second plate part, which are connected to the front plate, are far away from each other, the bent part is positioned between the side edges of the first plate part and the second plate part, which are far away from the front plate, and the first plate part is close to the central area of the main body;

the top of first board with the top of second board all with the roof is connected, the bottom of first board with the bottom of second board all with the bottom plate is connected.

8. The tail boom of claim 7, wherein an angle between the second plate portion and the front plate is equal to 90 °.

9. The tail boom of claim 7, wherein the number of the first reinforcing members is two, and two of the first reinforcing members are symmetrically arranged with respect to a center line of the front plate as a symmetry axis.

10. The tail boom according to claim 7, further comprising a second reinforcement member, wherein the second reinforcement member comprises an upper wing plate, a middle connecting plate and a lower wing plate which are connected in sequence, the upper wing plate is connected with the top plate, the middle connecting plate is connected with the front plate in an attaching manner, and the lower wing plate is connected with the bottom plate.

11. The tail boom of claim 10, wherein the second reinforcement is located in a central region of the front panel and the first reinforcement is located laterally of the second reinforcement.

12. A vehicle frame for a passenger vehicle comprising a first longitudinal member, a second longitudinal member, and a tail boom according to any of claims 1-11;

the first longitudinal beam and the second longitudinal beam extend along the length direction of the passenger car, the first longitudinal beam and the second longitudinal beam are arranged at intervals along the width direction of the passenger car, the first longitudinal beam and the second longitudinal beam are close to the tail ends of the tail portion of the passenger car respectively, the first side plate of the tail cross beam is connected with the tail end of the first longitudinal beam, and the second side plate of the tail cross beam is connected with the tail end of the second longitudinal beam.

13. A passenger vehicle comprising a power plant and a frame as defined in claim 12, said power plant being located between said first and second longitudinal rails of said frame and being located adjacent to a rear cross member of said frame.

Images