CN112141143B

CN112141143B - Virtual rail train body structure

Info

Publication number: CN112141143B
Application number: CN202010978362.3A
Authority: CN
Inventors: 周伟旭; 李永宽; 王保瑞; 贾鹏飞
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-10-22
Anticipated expiration: 2040-09-17
Also published as: CN112141143A

Abstract

The invention provides a virtual rail train body structure, which comprises an underframe, side walls, end walls and a roof, and is characterized in that: the chassis still includes wheel district arched girder, wheel district arched girder sets up between low floor district skeleton and one-bit end chassis, two-bit end chassis, and the shape is the arch that matches with the wheel outline, side wall steel skeleton texture sets up wheel district bracing at wheel position upside, set up the crossbeam between the wheel district bracing of every wheel upside, the fixed outer plaque in the side wall steel skeleton outside, the wheel position of the outer plaque of side wall is equipped with the arch opening, the headwall includes left and right baffle, upside crossbeam and wallboard, upside crossbeam both sides and side wall fixed connection, upside and roof aluminium alloy fixed connection, left and right baffle fixed connection both sides wall, wallboard fixed connection is in the left and right baffle, the upside crossbeam outside. The suspension and the vehicle body continuously transmit force to the main structure of the vehicle body through the arched beam and the transition beam on the underframe, so that the force transmission path is improved.

Description

Virtual rail train body structure

Technical Field

The invention belongs to the field of non-wheel-rail contact guided transportation under a public road right operation environment, and particularly relates to a virtual rail train body structure.

Background

At present, urban rail transit mainly comprises subway cars, tramcars, light rail cars and the like, and although each has unique advantages, the urban rail transit has large investment, high operation cost, long construction period and special track compared with public road traffic. The new generation of virtual rail trains is produced in order to meet the requirements of low route construction cost, less occupied ground resources, low urban traffic pressure, environmental protection and the like. The virtual rail train has a medium and low transportation volume system, has the advantages of both a tramcar and a bus, does not need to lay steel rails, does not damage a road surface, is formed by hinging a plurality of carriages in a whole train, has the track following capacity, can realize automatic guidance, adopts a novel full-electric drive rubber-tyred train system, continues to use part of rail vehicle application technologies, has the characteristics of short project construction period, small infrastructure investment and flexible scheduling, and is a solution of the medium transportation volume traffic system which takes into account transportation capacity and cost.

The train body is a main bearing part of the virtual rail train and is required to bear various equipment loads and acting forces of longitudinal, transverse and vertical impact loads in operation in the operation process, so that the train body has enough strength and rigidity, the safety and the stability of train operation are ensured, and space and support are provided for integration of various systems. Because the virtual rail train runs on a common road by replacing a bogie of the traditional rail vehicle with rubber wheels, the load conditions, the running conditions and the like borne by the train body bearing structure are obviously different from those of the rail vehicle running on a steel rail, and the train body bearing structure has no mature case. The vehicle body structure adaptive to the virtual rail train on the premise of light weight is provided, and the method has important significance.

Disclosure of Invention

The invention aims to provide a virtual rail train body structure, which meets the bearing requirements of a virtual rail train on a train body and the integration requirements of system interfaces, and simultaneously ensures that the train body is continuous in stress conduction, reasonable in structure and light in weight.

In order to achieve the purpose, the invention provides a virtual rail train body structure, which comprises an underframe, side walls, end walls and a train roof, wherein the underframe comprises a primary end underframe, a secondary end underframe and a low floor area skeleton, the primary end underframe, the secondary end underframe, the low floor area skeleton and the main body of the side wall adopt a truss type steel skeleton structure in a crossed ring arrangement, and the train roof is an aluminum profile structure with a self-mounted sliding groove, and is characterized in that: the chassis still includes wheel district arched girder, wheel district arched girder sets up between low floor district skeleton and one-bit end chassis, two-bit end chassis, and the shape is the arch that matches with the wheel outline, side wall steel skeleton texture sets up wheel district bracing at wheel position upside, set up the crossbeam between the wheel district bracing of every wheel upside, the fixed outer plaque in the side wall steel skeleton outside, the wheel position of the outer plaque of side wall is equipped with the arch opening, the headwall includes left and right baffle, upside crossbeam and wallboard, upside crossbeam both sides and side wall fixed connection, upside and roof aluminium alloy fixed connection, left and right baffle fixed connection both sides wall, wallboard fixed connection is in the left and right baffle, the upside crossbeam outside. The suspension and the vehicle body continuously transmit force to the main structure of the vehicle body through the arched beam and the transition beam on the underframe, so that the force transmission path is improved.

Wheel district arched girder includes that the steel pipe connects the arch boundary beam that forms and connects two a plurality of little crossbeams between the arch boundary beam, wherein a plurality of little crossbeams are connected side by side on arch boundary beam upper portion, both adapted to wheel pair installation, pivot angle and high lift demand, guarantee automobile body intensity again, and a plurality of little crossbeams of upside guarantee arched girder upside intensity simultaneously, adapt to the automobile body and bear the demand.

And a transition beam is arranged in an arched side beam of each wheel area arched beam positioned on the inner side of the vehicle body, so that the strength of the wheel area arched beam is increased on one hand, and the wheel area arched beam is connected with a suspension on the other hand.

The underframe further comprises a plurality of suspension interface mounting seats, and the suspension interface mounting seats are arranged on a transition beam at a wheel area arched beam or a low floor area framework and serve as connection interfaces of the suspension and the car body.

Virtual rail train body construction still includes the connecting plate, connecting plate one end fastening connection is at the upside crossbeam downside of headwall, and one end fastening connection roof aluminium alloy tip, reuse connecting plate reinforced connection behind headwall and the roof fixed connection increases the fastness of connecting.

The car roof further comprises sealing plates, the sealing plates are fixedly connected to the end portions of the aluminum profiles at the two ends of the car roof, the outer sides of the sealing plates are connected with the side beams on the end walls, and the sealing plates are mainly used for sealing cavities of the car roof profiles and connecting the end walls.

The vehicle body structure of the invention innovatively adopts a multi-material mixed application scheme. Compare single metal material structure, effectively improved material utilization rate, improved structure lightweight degree and design flexibility, accord with virtual rail train simultaneously and to the integrated demand of the bearing demand of automobile body, each system interface.

According to the vehicle body structure, under the condition of arranging the wheel area arched beam, the truss type steel frameworks are reasonably arranged, the continuity of force transmission is realized by using various connection modes, and stress concentration and local overlarge stress are avoided. The suspension and the vehicle body continuously transmit force to the main structure of the vehicle body through the arched beam and the transition beam on the underframe, and the force transmission path is improved to the maximum extent. Meanwhile, the structure form is simple and regular, and the vehicle production and manufacturing process can be greatly simplified.

Drawings

FIG. 1 is an isometric view of the vehicle body structure of the present invention;

FIG. 2 is a half sectional view of the vehicle body structure of the present invention;

FIG. 3 is a schematic view of the chassis assembly of the present invention;

FIG. 4 is a partial view of the wheel arch of the present invention;

FIG. 5 is a schematic view of the sidewall composition of the present invention;

FIG. 6 is a schematic view of the end wall assembly of the present invention;

FIG. 7 is a schematic view of the roof assembly of the present invention;

FIG. 8 is a schematic view of a connecting structure between a side wall and a roof of the present invention;

fig. 9 is a schematic view of the connection structure between the end wall and the roof of the vehicle.

Wherein: 1-underframe, 2-side wall, 3-end wall, 4-roof, 5, structural adhesive and 6-fastener

101-one-position end underframe, 102-wheel area arched beam, 103-low floor area skeleton, 104-two-position end underframe, 105-hinged support, 106-suspension interface mounting seat and 107-transition beam

201-side wall upper side beam, 202-door upper cross beam, 203-main upright post, 204-window upper cross beam, 205-window lower cross beam, 206-composite board outer skin, 207-wheel zone diagonal brace, 208-outer plate reinforcement, 209-small upright post and 210-connecting cross beam

301-upper side beam, 302-connecting plate, 303-wall plate, 304-baffle plate

401-roof aluminum profile, 402-sealing frame, 403-sealing plate

Detailed Description

Referring to fig. 1 and 2, the vehicle body structure of the present invention mainly includes: chassis 1, side wall 2, headwall 3, roof 4.

With reference to fig. 3 and 4, the undercarriage 1 according to the invention mainly comprises: the system comprises a primary end chassis 101, a wheel arch beam 102, a low floor area framework 103, a secondary end chassis 104, a hinged support 105 and a suspension interface mounting seat 106. The primary end underframe 101 and the secondary end underframe 104 adopt high-strength truss type steel skeleton structures, mainly use channel steel materials and square steel pipes, and the cross beam is provided with lightening holes; the cross beams are connected through groove-shaped longitudinal beams; the high and low planes of the framework are supported by groove-shaped and square upright posts; the reasonable arrangement and welding of the cross beams, the longitudinal beams and the upright columns form a truss type steel skeleton structure with a crossed ring arrangement, so that a closed force transmission path is realized, and the functions of bearing accessories on a vehicle and increasing the integral rigidity of the end underframe are achieved. The arrangement mode that the end part of the one-position end underframe 101 adopts the transverse inward contraction of the train body and the vertical lifting of the train body can meet the requirements of the appearance and the installation of the train head cover, and the lifting angle can also adapt to various complex road conditions. Each wheel arch beam 102 is composed of two arched boundary beams formed by welding square steel pipes end to end, a small cross beam is welded between the two arched boundary beams, the upper parts of the arched boundary beams are connected with a plurality of small cross beams side by side, and transition beams 107 are arranged in the arched boundary beams positioned on the inner side of the vehicle body. The primary end underframe 101, the secondary end underframe 104 and the low floor area skeleton 103 are connected into an integral underframe, mainly bear the vertical load transmitted by the suspension air spring, and simultaneously transmit the stress to the primary end underframe 101, the secondary end underframe 104 and the low floor area skeleton 103. The low floor area framework 103 is mainly formed by sequentially welding cross beams, longitudinal beams and side beams of channel steel; lightening holes are formed in the cross beam to reduce weight; the low floor area framework 103 is a low floor area of the underframe 1, the framework is flat and simple in arrangement, the height from the road surface is less than 300mm, the occupancy of the low floor area of the passenger room is improved to the maximum extent, and meanwhile, the arrangement of passenger room facilities and passengers getting on and off the vehicle are facilitated. The suspension frame interface mounting seat 106 is arranged on a framework of a low floor area between the transition beam 107 and the wheel pair, is made of forged steel materials, and is provided with a through hole matched with a suspension frame interface bolt so as to realize mounting and fixing of a suspension frame fork arm and load transfer. The hinged support 105 is made of forged steel and welded to the end beam of the two-position end chassis 104 to provide a mounting seat for the hinged support mechanism between vehicles.

Referring to fig. 5, the sidewall 2 of the present invention mainly includes: side wall upper side beams 201, door upper cross beams 202, main upright posts 203, window upper cross beams 204, window lower cross beams 205, composite plate outer skins 206, wheel area diagonal braces 207, outer plate reinforcements 208, small upright posts 209 and connecting cross beams 210. The side wall boundary beam 201 is a hollow steel section which is long along the longitudinal direction of the vehicle body. The connecting beam 210 connects and fixes the first and second sides of the side wall 2, and bolt mounting holes are formed in the upper plane of the connecting beam, so that the side wall 2 can be connected with the roof 4 by using fasteners 6. The connecting cross beam 210 and the main upright 203 are provided with lightening oblong holes so as to lighten the weight on the premise of ensuring the strength and the rigidity. The side wall upper side beam 201, the connecting cross beam 210, the main upright column 203, the window upper cross beam 204, the window lower cross beam 205 and the door upper cross beam 202 are connected in a welding mode to form a main truss of the side wall 2. And then welding the wheel area inclined strut 207, the small upright post 209 and the outer plate reinforcement 208 with the main truss to form a complete side wall 2 framework. The composite board skin 206 is made of a composite material, and has the functions of heat preservation and insulation, sound absorption and noise reduction, decoration and blocking and the like.

Referring to fig. 6, the headwall 3 of the present invention mainly includes: upper side crossbeam 301, connecting plate 302, steel wallboard 303, baffle 304. The upper cross member 301 is formed by welding closure plates at both ends from a hollow steel profile. The baffle 304 is a steel plate along the height direction of the vehicle body, and a V-shaped groove is arranged at the contact position of the baffle and the steel wallboard 303. The steel wall plate 303 is welded with the upper cross beam 301 and the baffle plate 304 respectively to form a whole.

Referring to fig. 7, the roof 4 of the present invention mainly includes: roof section bar 401, sealing frame 402, closing plate 403. The roof section bar 401 is formed by combining and welding a plurality of aluminum sections with mounting chutes; the inner ribs are arranged in the aluminum profile cavity, so that the rigidity of the car roof 4 can be obviously improved; the hollow cavity of the aluminum profile can provide a reasonable path for electrical wiring or is internally filled with a heat-insulating sound-absorbing material; the aluminum profile is provided with a mounting chute, so that a mounting seat and a lifting point can be respectively provided for the equipment mounted on the upper surface and the lower surface of the car roof 4. The sealing plate 403 is an aluminum profile, is located at the first end and the second end of the roof 4, is provided with a V-shaped groove at the position contacting with the roof profile 401 and is welded with the V-shaped groove, and mainly has the functions of blocking the cavity of the roof profile 401 and connecting the upper side cross beam of the end wall 3. The sealing frame 402 is an aluminum section bar, is welded with the roof section bar 401, and mainly has the function of providing a sealing installation seat for an air conditioner air port on the vehicle.

Referring to fig. 8 and 9, the connection mode among the components according to the present invention is: an upper side cross beam 301, a steel wall plate 303 and a baffle plate 304 on the end wall 3, a side wall upper side beam 201 and a main upright column 203 on the side wall 2, a primary end underframe 101, a secondary end underframe 104 and a low floor area skeleton 103 on the underframe 1 are welded in a combined manner. The roof aluminum profile 401 and the closing plate 403 on the roof 4 are respectively bonded with the upper side cross beam 301 of the end wall 3 and the side wall side beam 201 on the side wall 2 by using the structural adhesive 5. The end wall 3 is firmly connected with the roof 4 by using the connecting plate 302 and the fastener 6. The side wall 2 is tightly connected with the roof 4 through the connecting cross beam 210 and the fasteners 6. And finally, the composite board skin 206 is adhered to the outer vertical surfaces of the two sides of the side wall 2 by using the structural adhesive 5 to form an integral vehicle body bearing structure.

The lower sides of the end walls 3 and the side walls 2 are welded with the periphery of the bottom frame 1, the upper sides of the first-position side wall and the second-position side wall are fixedly connected through a connecting beam 210, bolt mounting holes are formed in the upper plane of the first-position side wall and the second-position side wall, the side walls 2 and the roof 4 can be connected through fasteners 6, the side wall upper side beams 201 and roof profiles are bonded through structural adhesive 5, the end wall upper side beams 5 and the roof sealing plate 403 are bonded through the structural adhesive 5, and then the end walls 3 and the roof 4 aluminum profiles are fastened and connected through connecting plates 302 and the fasteners 6. And finally, the composite board skin 206 is adhered to the outer vertical surfaces of the two sides of the side wall 2 by using the structural adhesive 5 to form an integral vehicle body bearing structure.

Based on the vehicle body structure, the vehicle body bearing requirements, the integration requirements and the technological requirements of the virtual rail train on the vehicle body can be met. The design has been validated through finite element analysis and testing and validated in production.

Claims

1. The utility model provides a virtual rail train body structure, includes chassis (1), side wall (2), headwall (3), roof (4), chassis (1) includes one-position end chassis (101), two-position end chassis (104), low floor district skeleton (103), the truss-like steel skeleton texture that "circle of handing over" arranged is adopted to the main part of one-position end chassis (101), two-position end chassis (104), low floor district skeleton (103) and side wall (2), roof (4) are from the aluminum profile section structure of taking the installation spout, its characterized in that: the underframe (1) also comprises a wheel area arched beam (102), the wheel area arched beam (102) is arranged between the low-floor area skeleton (103) and the first-position end underframe (101) and the second-position end underframe (104) and is in an arch shape matched with the outer contour of the wheel, the side wall (2) steel skeleton structure is provided with a wheel area inclined strut (207) at the upper side of the wheel position, a cross beam is arranged between the wheel area inclined struts (207) at the upper side of each wheel, an external decorative plate is fixed at the outer side of the steel skeleton of the side wall (2), the wheel position of the outer decorative plate of the side wall (2) is provided with an arched opening, the end wall (3) comprises a left baffle plate (304), a right baffle plate (304), an upper side beam (301) and a wallboard (303), the upper side is fixedly connected with a roof aluminum profile (401), the left baffle plate (304) and the right baffle plate (304) are fixedly connected with the side walls (2) at two sides, the wall plate (303) is fixedly connected to the outer sides of the left baffle plate (304), the right baffle plate (304) and the upper side cross beam (301).

2. The virtual rail train body structure according to claim 1, characterized in that: the wheel area arched beam (102) comprises arched boundary beams formed by connecting steel pipes and a plurality of small cross beams connected between the two arched boundary beams, wherein the upper parts of the arched boundary beams are connected with the plurality of small cross beams side by side.

3. The virtual rail train body structure according to claim 2, characterized in that: and a transition beam (107) is arranged in the arched boundary beam of each wheel area arched beam (102) positioned on the inner side of the vehicle body.

4. The virtual rail train body structure according to claim 3, characterized in that: also included are a plurality of suspension interface mounts (106), the plurality of suspension interface mounts (106) disposed on the transition beam (107) or the low floor frame (103) at the wheel bay camber beam (102).

5. The virtual rail train body structure according to claim 1, characterized in that: still include connecting plate (302), connecting plate (302) one end fastening connection is in the upside crossbeam (301) downside of headwall (3), and one end fastening connection roof aluminium alloy (401) lower part.

6. The virtual rail train body structure according to claim 1, characterized in that: still include shrouding (403), shrouding (403) fixed connection is in the aluminium alloy tip at roof (4) both ends, and shrouding (403) outside is connected end wall (3) side cross member (301).