CN111284511A

CN111284511A - Carriage and roof thereof, and passenger car with roof

Info

Publication number: CN111284511A
Application number: CN201811494468.5A
Authority: CN
Inventors: 刘晋; 王琰; 刘宇; 冯亮; 王国静
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2018-12-07
Filing date: 2018-12-07
Publication date: 2020-06-16

Abstract

The invention provides a carriage, a roof of the carriage and a passenger car with the roof, and belongs to the technical field of rail transit equipment manufacturing. Wherein, the roof includes: the method comprises the following steps: the device comprises a high-top camber beam, a high-top skin and a device mounting beam group; the high-top skin covers a plurality of high-top camber beams which are distributed at intervals along the length direction of the car roof; the equipment mounting beam group extends along the length direction of the vehicle roof and is fixed on the high-top skin; the high-top camber beam is an integrated structure manufactured by a stretch bending process; the equipment mounting beam group is used for mounting equipment. The through-length roof is manufactured by adopting the stretch-bending integrated high-top camber beam, the high top and the flat top are not divided during the production of the roof, the total number of parts and the welding amount required by the formation of the roof are reduced, and the production period and the production cost of the whole product are reduced.

Description

Carriage and roof thereof, and passenger car with roof

Technical Field

The invention relates to a carriage, a roof of the carriage and a passenger car with the roof, and belongs to the technical field of rail transit equipment manufacturing.

Background

Railroad trains, i.e., trains, are historically important vehicles for humans. The railway train can be divided into a freight car for carrying goods and a passenger car for carrying passengers according to loads. The passenger car has the advantages of large passenger capacity and low energy consumption, and is very suitable for the national conditions of wide breadth of our country and large population. Therefore, the rail transit in China develops very rapidly.

The roof of a certain type of passenger car used in China at present needs to be provided with equipment such as an air conditioner and the like, so that the roof is divided into areas with different heights by using a flat top skin and a high top skin at the roof part for placing the equipment, so that the equipment such as the air conditioner and the like can be arranged on an equipment mounting seat at the flat top position; at the same time, a connecting top skin is also used to connect the high top skin and the low top skin into a complete roof.

However, when the roof of the conventional passenger car is assembled, at least three tire positions, namely a high-top assembling tire, a low-top assembling tire, a roof connecting tire and the like, need to be prepared for assembly so as to realize the installation of one roof. The assembly mode enables the cost for preparing the tooling clamping fixture to be high during production, and meanwhile, because the high top and the flat top respectively generate assembly errors during assembly, the assembly errors caused by the two parts are not easy to adjust when the car roof is connected, the repair workload is large, and the production efficiency is low.

Disclosure of Invention

The invention provides a carriage, a roof of the carriage and a passenger car with the roof, which are used for overcoming the defects in the prior art.

A first aspect of the present invention provides a vehicle roof comprising: the device comprises a high-top camber beam, a high-top skin and a device mounting beam group;

the high-top skin covers a plurality of high-top camber beams which are distributed at intervals along the length direction of the car roof; the equipment mounting beam group extends along the length direction of the vehicle roof and is fixed on the high-top skin; the high-top camber beam is an integrated structure manufactured by a stretch bending process; the equipment mounting beam group is used for mounting equipment.

Optionally, a plurality of the high-top camber beams are uniformly arranged along the length direction of the roof.

Optionally, the equipment mounting beam set includes: two equipment mounting beams are arranged at intervals along the width direction of the vehicle roof, and the two equipment mounting beams are symmetrical along the center line of the width of the vehicle roof.

Optionally, the equipment mounting rail is welded to the roof skin.

Optionally, the number of equipment mounting beam sets is at least two.

Optionally, at least two of the equipment mounting beam sets are spaced apart along the length of the roof.

Optionally, a plurality of the equipment-mounting beam sets are provided at intervals along the length direction of the roof.

Optionally, the equipment mounting beam set extends along the length of the roof for the same length as the roof.

Another aspect of the present invention provides a vehicle compartment, including: the vehicle comprises a floor, the roof and two side walls which are arranged between the floor and the roof and are arranged oppositely, wherein the floor, the roof and the side walls enclose an accommodating space for accommodating passengers.

Yet another aspect of the present invention provides a passenger vehicle, comprising: locomotive and at least one section of the carriage connected with the locomotive.

The invention provides a carriage and a roof thereof, and a passenger car with the roof, wherein the roof comprises: the device comprises high-top camber beams, high-top skins and a device mounting beam group, wherein the high-top camber beams are arranged at intervals along the length direction of a vehicle roof, and the high-top skins cover the high-top camber beams; the equipment mounting beam group extends along the length direction of the vehicle roof and is fixed on the high-top skin. The integral structure manufactured by adopting the stretch bending process is used as the high-top camber beam, the high-top camber beam is not divided into a high top and a flat top during the production of the roof, the total number of parts and the welding quantity required by the formation of the roof are reduced, the production period and the production cost of products are reduced, and the production efficiency of the products is improved.

Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

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

FIG. 1 is a schematic structural diagram of a stretch bender according to an embodiment;

FIG. 2 is a schematic view of the working state of the arc die provided by the embodiment;

FIG. 3 is a schematic structural diagram of a high-top camber beam provided by an embodiment;

FIG. 4 is a schematic side view of a first vehicle roof according to an embodiment;

FIG. 5 is a top view of a first vehicle roof according to an embodiment;

FIG. 6 is a schematic end view of a vehicle roof according to an embodiment;

FIG. 7 is a top view of a second vehicle roof according to an embodiment;

FIG. 8 is a schematic structural diagram of an end face of a vehicle compartment provided by the embodiment;

FIG. 9 is a schematic structural diagram of a passenger car according to an embodiment.

In the figure:

100: a stretch bender; 101: a controller; 102: a radian mould;

103: a first rotating arm; 104: a second rotating arm; 105: a second cylinder;

106: a second cylinder holder; 107: a first cylinder power source; 108: a work table;

109: a caliper; 110: a first cylinder; 200: a vehicle roof;

210: a high top camber beam; 220: high-top skin; 221: an air inlet;

222: an air outlet; 230: mounting a beam group on the equipment; 231: an equipment mounting beam;

300: a floor; 400: a side wall; 500: a carriage;

600: a locomotive; 260: a 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 or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

It should be understood that the following examples do not limit the order of execution of the steps of the claimed method. The various steps of the method of the invention can be performed in any possible order and in a round-robin fashion without contradicting each other.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, references to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Examples

Fig. 1 is a schematic structural diagram of a stretch bender according to this embodiment. Fig. 2 is a schematic view of the working state of the arc die provided in this embodiment. Fig. 3 is a schematic structural view of the high-top camber beam provided in this embodiment. Fig. 4 is a schematic side view of the first vehicle roof according to the embodiment. Fig. 5 is a plan view of the first vehicle roof provided in the present embodiment. Fig. 6 is a schematic end view of the roof according to the present embodiment. Fig. 7 is a plan view of the second vehicle roof provided in the present embodiment. Fig. 8 is a schematic end face structure diagram of the vehicle compartment provided in the present embodiment. Fig. 9 is a schematic structural diagram of a passenger car provided in this embodiment.

Referring to fig. 1 to 9, the vehicle roof provided in this embodiment includes: high top camber beams 210, high top skin 220, and equipment mounting beam sets 230; the high-top skin 220 is coated on a plurality of high-top camber beams 210 which are distributed at intervals along the length direction of the vehicle roof; the equipment mounting beam set 230 extends along the length direction of the roof and is fixed on the high top skin 220; the high-top camber beam 210 is an integrated structure manufactured by a stretch bending process; the equipment mounting beam set 230 is used to mount equipment.

Specifically, in the embodiment, the bending machine is used for processing the integrated high-top camber beam 210, so that the forming mode of the existing vehicle-top camber beam is changed, a spliced camber beam structure is avoided, the number and welding amount of parts required for forming the high-top camber beam 210 are reduced, the forming speed of the high-top camber beam 210 is increased, and the production period of the high-top camber beam 210 is shortened; further, the through-length roof manufactured by the stretch-bending integrated high-top camber beam 210 has no high top and flat top during roof production, so that the total number of parts and the welding amount required by roof forming are reduced, and the production period and the production cost of the whole product are reduced.

Specifically, in the present embodiment, referring to fig. 1, the stretch bender 100 includes: the arc die 102 and the controller 101 are integrated on the workbench 108, the first rotating arm 103 and the second rotating arm 104 are installed on the workbench 108, the second air cylinder bracket 106, the second air cylinder 105, the first air cylinder power source 107, the caliper 109 and the first air cylinder 110. Wherein, the first rotating arm 103 and the second rotating arm 104 are symmetrically arranged about the center line x of the workbench 108, and the first rotating arm 103 and the second rotating arm 104 are connected with the workbench 108 through a revolute pair, i.e. the first rotating arm 103 and the second rotating arm 104 both rotate with the joint with the workbench 108 as the rotation center. A second cylinder bracket 106 is mounted on each of the first pivot arm 103 and the second pivot arm 104, and a second cylinder 105 is fixed to each of the first pivot arm 103 and the second pivot arm 104. The two second cylinders 105 are fixed by the calipers 109 and both ends of the high-top camber beam 210. The arc mold 102 is provided with an arc groove for clamping the middle portion of the high-top camber beam 210, and the arc shape of the arc mold 102 is the final bending shape of the high-top camber beam 210 to be processed. The first cylinder power source 107 is connected with the first cylinder 110 and drives the telescopic action of the first cylinder 110, the telescopic action of the first cylinder 110 drives the first rotating arm 103 and the second rotating arm 104 to rotate relative to the workbench 108, and the first rotating arm 103 and the second rotating arm 104 rotate to bend a workpiece to be stretch-bent, for example, with two vertical edges, to be consistent with the radian of the groove of the radian mould 102. In this process, the two second cylinders 105 stretch the two right-angled sides of the workpiece to be stretch-bent to stretch the workpiece to be stretch-bent to the same length as the overhead camber beam. Based on the above, the stretch bender 100 can bend the workpiece to be bent with two right-angled sides into the same radian as the groove of the radian mould through the close fit of the two

rotating arms

103 and 104 and the two second cylinders 105, and simultaneously elongate the two right-angled sides of the workpiece to be bent, so as to obtain the desired integrated high-top camber beam 210.

The stretch bending forming process of the high-top camber beam 210 is briefly described as follows:

firstly, a steel plate is cut into a preset size as an original base material of the high-top camber beam 210, wherein the preset size can be a size which is relatively close to that of the final high-top camber beam 210 or a size which is convenient to process; of course, other materials satisfying the supporting strength required for the overhead bent beam 210 may be used as the original base material of the overhead bent beam 210, and the present embodiment will be described with a steel plate as the original base material.

Further, the original base material is bent by a bending method commonly used by those skilled in the art, and the original base material is bent into a predetermined shape. For example, in the present embodiment, as shown in fig. 2, the original substrate is bent into a right-angled shape by using an existing bending machine, two right-angled edges of the bent original substrate are clamped in the grooves on the side surface of the radian mould 102, and before bending, the ends of the two right-angled edges of the original substrate need to be fixed by a caliper 109 and a second cylinder 105 on the first rotating arm 103 and the second rotating arm 104, respectively, which are commonly used by those skilled in the art, so as to prepare for installation before the bending process. Here, it should be noted that, in the actual production process, the original base material may be bent to a desired predetermined angle according to the cross-sectional shape of the roof required by each different type of train, and this embodiment only shows the shape of the bend at a right angle by way of example, and the bent shape of the original base material is not particularly limited.

Still further, the bent piece formed by bending is installed in the bending machine shown in fig. 1, that is, two ends of the bent piece are respectively fixed with the first rotating arm 103 and the second rotating arm 104 by using the caliper 109, and the middle part of the bent piece is clamped in the clamping groove on the radian mould 102, so that the bent piece is prevented from deflecting relative to the radian mould 102, and the accuracy of the bending operation is improved.

After a bent piece is installed, a power supply of the bending machine 100 is started, the controller 101 controls the first cylinder power source 107 to be started, the first cylinder power source 107 drives the first rotating arm 103 and the second rotating arm 104 to rotate in opposite directions, that is, as shown in fig. 1, after the power supply of the bending machine 100 is switched on, the controller 101 controls the first cylinder power source 107 to start operating, the first cylinder power source 107 drives the telescopic rod of the first cylinder 110 to perform contraction motion, at this time, the first rotating arm 103 performs clockwise rotation motion, the second rotating arm 104 performs counterclockwise rotation, and the controller 101 controls the rotating arms and the second rotating arm 104 to rotate by a predetermined angle. At the same time, the expansion rods of the two second air cylinders 105 contract to stretch the workpiece, thereby forming the preparation of the high-top camber beam 210. Here, the preset angle of rotation of the first rotating arm 103 and the second rotating arm 104 is an angle at which the bent piece is bent into the end surface shape of the overhead camber beam 210 required for the roof, and may be specifically set according to the requirement of machining a specific vehicle model, and the present embodiment is not particularly limited thereto.

Still further, the stretch bending part is compared with the detection sample plate of the high-top bent beam 210, the stretch bending program is corrected for the over-tolerance part of the stretch bending part, that is, the stretch bending part is stretched for the second time, the over-tolerance part refers to the shape error between the standard high-top bent beam 210 required by the end surface shape of the stretch bending part formed through the stretch bending program and the vehicle roof, the stretch bending error can be reduced through the second stretching, so that the stretch bending part is kept in the shape error range of the high-top bent beam 210, for example, until the gap between the stretch bending part and the detection sample plate is smaller than 2mm, that is, the stretch bending part is qualified, and the next processing program of the high-top bent beam 210 can be carried out.

Finally, the qualified stretch-bent piece is subjected to a crop operation, that is, the excess end structures at both ends of the stretch-bent piece are removed, so as to form the final high-top bent beam 210. For example, a three-dimensional laser cutting machine may be used to cut and remove the end portions of the two ends of the stretch-bent piece, and the stretch-bent piece after the end cutting operation is the qualified high-top bending beam 210. For example, the structure shown in fig. 3 is the final shape of the qualified high-top camber beam 210 in the present embodiment. Here, it should be noted that other suitable cutting methods commonly used by those skilled in the art may be used for the head cutting operation, and the embodiment is not particularly limited.

Specifically, the high-top skin 220 may be formed by bending a metal plate in a square shape, and have the same end surface shape as the high-top camber beam 210. For example, in some examples, a steel skin may be used as the high top skin 220 to meet roof structural strength requirements. Here, it should be noted that the steel plate support and the overhead camber beam 210 have the same-shaped end surface structure using a profiling operation commonly used by those skilled in the art. For another example, in this embodiment, a light alloy material such as an aluminum alloy plate may be used as the high-top skin 220, for example, the aluminum alloy plate is bent to form a structure as shown in fig. 4 and 5 as the high-top skin 220, and the roof made of the high-top skin 220 made of the aluminum alloy plate meets the design requirement of train light weight.

Further, the surface of the roof skin can be provided with a coating (such as an anti-rust coating or an anti-oxidation coating), so that the high-top skin 220 of the roof is isolated from the outside air, and the corrosion of rainwater to the high-top skin 220 in rainy days is avoided, so that the maintenance rate of the roof is reduced, and the service life of the roof is prolonged.

Specifically, in this embodiment, as shown in fig. 5, a rectangular air inlet 221 and a rectangular air outlet 222 may be further disposed on the high-top skin 220 to provide an air exchange inlet and outlet for use of a roof air conditioner, and the air inlet 221 on the high-top skin 220 is communicated with the air outlet of the air conditioner to realize that the air conditioner provides cold and hot air for the interior of the train; the air outlet 222 of the high-top skin 220 communicates with the air inlet of the air conditioner, and displaces the air in the train to the atmosphere. In addition, in some other examples, the air inlet 221 and the air outlet 222 may also be provided in a circular shape or other shapes suitable for an air conditioner, and this embodiment is not illustrated here.

Furthermore, filter screens can be arranged on the air inlet 221 and the air outlet 222 of the high-top skin 220 of the car roof, so that sundries in the outside air can be prevented from entering the interior of the train through the air inlet 221 or the air outlet 222 of the high-top skin 220.

Further, in the present embodiment, the lower surface of the high-top skin 220 is generally provided with a plurality of high-top camber beams 210, and the plurality of high-top camber beams 210 are uniformly arranged along the length direction of the roof 200 to improve the strength of the roof. In other examples, the plurality of high-top beams 210 may not be uniformly arranged, and may be arranged according to an actual installation manner of the roof, and the embodiment is not particularly limited.

With continued reference to fig. 5, the roof 200 may further include a plurality of side rails 260, the plurality of side rails 260 and the high top camber 210 collectively supporting the high top skin 220 as the roof. For example, in some embodiments, a columnar steel bar may be used as the longitudinal beam 260, and for example, in this embodiment, a channel steel may also be used as the longitudinal beam 260, and of course, in other examples, a steel bar commonly used in the art may also be used as the longitudinal beam 260, and this embodiment does not specially limit the form of the longitudinal beam 260.

Specifically, as shown in fig. 6, by providing an equipment-mounting beam group 230 above the high-top skin 220, the equipment-mounting beam group 230 extends along the length direction of the roof 200 and is fixed to the high-top skin 220, so that some equipment required for a train, such as an air conditioner and the like, can be mounted on the roof 200.

Further, referring to fig. 5, the equipment-mounting beam assembly 230 includes: two device mounting beams 231 are provided at intervals in the width direction of the roof, and the two device mounting beams 231 are symmetrical along the center line of the roof width. For example, in some examples, a strip-shaped plate structure as shown in fig. 5 may be employed as the equipment-mounting beam 231, two strip-shaped plate structures symmetrical along the center line of the width of the roof constitute one equipment-mounting beam group 230, and equipment such as an air conditioner is mounted on the roof by the equipment-mounting beam group constituted by the two equipment-mounting beams 231.

It should be noted that each of the equipment-mounting beams 231 and the roof 200 may be detachably fixed by bolts or may be non-detachably connected by welding. For example, in the present embodiment, the equipment-mounting beams 231 and the high-top skin 220 are connected by full-weld welding, where full-weld welding is used to fully weld the contact portions between the equipment-mounting beams 231 and the upper surface of the high-top skin 220, so as to ensure that the equipment-mounting beam group 230 is reliably mounted on the upper surface of the high-top skin 220 of the roof 200.

For example, in the present embodiment, two steel bars symmetrically disposed about the longitudinal axis of the roof 200 may be used as the equipment mounting beams 231, the bottom surfaces of the steel bars may be fixed to the upper surface of the high-top skin 220 by welding, the upper surfaces of the steel bars serve as the mounting surfaces of the equipment, and the equipment is mounted near the longitudinal axis of the roof 200 by using the two equipment mounting beams 231 symmetrically disposed about the longitudinal axis of the roof, thereby ensuring the reliability of the equipment mounting. For example, in other examples, section steel such as U-shaped steel or i-shaped steel may be used as the equipment mounting beam 231 to meet the mounting requirements of different equipment.

Alternatively, mounting different equipment on the roof along its length may be achieved by providing at least two equipment mounting rail sets 230 above the high top skin 220 of the roof 200. For example, in the present embodiment, two device-mounting beam sets 230 may be disposed at intervals along the length direction of the roof 200, and the two device-mounting beam sets 230 are symmetrical along the center line of the length of the roof 200. In this way, by providing one equipment mounting beam set 230 at each end of the roof 200 in the longitudinal direction, for example, one air conditioner can be installed at each end of the roof 200 to ensure the air requirement in the train. Of course, the equipment-mounting beam set 230 may also be provided in plural, for example, in some examples, five equipment-mounting beam sets 230 may be provided and arranged at regular intervals along the length direction of the roof 200, the number and arrangement manner of the equipment-mounting beam sets 230 may be determined by the type according to the number of the equipments mounted above the specific roof 200, the arrangement manner of the equipment-mounting beam sets 230 ensures the reliability of the equipment mounting, and the present embodiment is not particularly limited.

For example, in other embodiments, the length of the device mounting beam set 230 along the length of the roof may be the same as the length of the roof, i.e., only one device mounting beam set 230 having the same length as the roof is required to be mounted on the roof, so that devices can be mounted at any position on the roof.

The present embodiment provides a vehicle roof 200, the vehicle roof 200 including: the high-top camber beam 210, the high-top skin 220 and the equipment mounting beam group 230 adopt an integrated structure manufactured by a stretch bending process as the high-top camber beam 210, so that the full-length roof 200 without high top and flat top can be manufactured, the total number of parts and welding amount required by the forming of the roof 200 are reduced, the production period and the production cost of products are reduced, and the production efficiency of the products is improved. In addition, by adopting a manner that a plurality of equipment mounting beam groups 230 are arranged along the length direction of the roof 200, equipment required for the train is mounted at different positions of the roof 200 along the length direction.

As shown in fig. 8, the present embodiment provides a vehicle compartment 500 including: the vehicle comprises a floor 300, the roof 200 and two side walls 400 which are arranged between the floor 300 and the roof 200 and are opposite to each other, wherein the floor 300, the roof 200 and the side walls 400 enclose an accommodating space for accommodating passengers. The floor 300 and the side wall 400 may be made of a structure commonly used by those skilled in the art, such as the floor 300 and the side wall 400 made of cut steel plates.

As shown in fig. 9, the present embodiment also provides a passenger vehicle, including: the locomotive 600 and the carriages 500 connected with the locomotive 600 draw the subsequent carriages 500 to advance through the locomotive 600, so that the passenger car can carry passengers comfortably. In this embodiment, as shown in fig. 9, three carriages 500 and one locomotive 600 are adopted as the whole passenger car, which belongs to a small passenger car, and in actual production, the number of carriages 500 can be increased or decreased according to the passenger capacity adaptability, and this embodiment does not specifically limit the number of carriages 500.

The carriage 500 provided by the embodiment simplifies the processing procedure of the carriage 500 and improves the production efficiency of the carriage 500 by adopting the vehicle roof 200; the passenger car that this embodiment provided, from the general, not only accelerated the production speed of passenger car, also reduced the manufacturing cost of passenger car.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.

Claims

1. A vehicle roof, comprising: the device comprises a high-top camber beam, a high-top skin and a device mounting beam group;

2. The vehicle roof as claimed in claim 1, wherein a plurality of said high top camber beams are arranged uniformly along a length direction of the vehicle roof.

3. The vehicle roof as claimed in claim 1, wherein the equipment mounting beam set comprises: two equipment mounting beams are arranged at intervals along the width direction of the vehicle roof, and the two equipment mounting beams are symmetrical along the center line of the width of the vehicle roof.

4. The vehicle roof of claim 3, wherein the equipment mounting rail is welded to the roof skin.

5. The vehicle roof as claimed in any one of claims 1-4, wherein there are at least two of said equipment mounting beam sets.

6. The vehicle roof of claim 5, wherein at least two of the equipment mounting beam sets are spaced apart along the length of the vehicle roof.

7. The vehicle roof as claimed in claim 6, wherein a plurality of the equipment mounting beam sets are provided at intervals along a length direction of the vehicle roof.

8. The vehicle roof of claim 4, wherein the equipment mounting rail set extends along the length of the vehicle roof for the same length as the length of the vehicle roof.

9. A vehicle compartment, comprising: the vehicle roof of any one of claims 1 to 8, and two side walls disposed between and opposite to the floor and the vehicle roof, the floor, the vehicle roof and the side walls enclosing a receiving space for accommodating passengers.

10. A passenger vehicle, comprising: a locomotive and at least one car of claim 9 connected to the locomotive.