CN110962935A - Low-floor vehicle and frame thereof - Google Patents

Low-floor vehicle and frame thereof Download PDF

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Publication number
CN110962935A
CN110962935A CN201811161643.9A CN201811161643A CN110962935A CN 110962935 A CN110962935 A CN 110962935A CN 201811161643 A CN201811161643 A CN 201811161643A CN 110962935 A CN110962935 A CN 110962935A
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CN
China
Prior art keywords
frame
battery box
main longitudinal
rear axle
section
Prior art date
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Granted
Application number
CN201811161643.9A
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Chinese (zh)
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CN110962935B (en
Inventor
王君
张能忠
张力允
陈维
李振远
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Zhengzhou Yutong Bus Co Ltd
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Zhengzhou Yutong Bus Co Ltd
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Priority to CN201811161643.9A priority Critical patent/CN110962935B/en
Publication of CN110962935A publication Critical patent/CN110962935A/en
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Publication of CN110962935B publication Critical patent/CN110962935B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D21/00Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/02Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00Arrangement or mounting of electrical propulsion units
    • B60K1/04Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00Arrangement or mounting of electrical propulsion units
    • B60K1/04Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0416Arrangement in the rear part of the vehicle

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

The invention relates to the technical field of vehicles, in particular to a low-floor vehicle and a frame thereof, which can solve the problems of limited battery installation and difficulty in maintenance caused by arrangement of batteries on the frame in the prior art. The low-floor vehicle comprises a frame, wherein the frame comprises a rear frame axle section and a rear frame section which is positioned at the rear side of the rear frame axle section, the rear frame axle section is provided with two rear frame main longitudinal beams which are arranged along the length direction of the frame, the rear frame section comprises rear frame main longitudinal beams which are arranged along the length direction of the frame, the rear frame main longitudinal beams are arranged at intervals along the width direction of the frame, a rear frame main cross beam is arranged at the joint of the rear frame axle section and the rear frame section, the front end of each rear frame main longitudinal beam is fixed on the rear frame main cross beam, at least one rear frame main longitudinal beam which is positioned at the outermost side in the width direction of the frame is an outer side staggered beam which is horizontally staggered with the rear frame main longitudinal beams, and at least one outer side staggered beam side forms a battery box installation space which is horizontally arranged with the outer.

Description

Low-floor vehicle and frame thereof
Technical Field
The invention relates to the technical field of vehicles, in particular to a low-floor vehicle and a frame thereof.
Background
With the continuous progress of the technology, the market puts higher requirements on the passenger car, and the low-floor passenger car technology is gradually applied to the passenger car for facilitating the rapid getting on and off of passengers and the movement of people in the passenger car. Taking an electric vehicle as an example, the driving motors of the existing low-floor passenger car are all in a rear-mounted form and are influenced by the sizes and arrangement modes of the driving motors, a gearbox and the like, and the low-floor passenger car is generally free of steps from the front part (front door) to the middle part (middle door).
For example, in patent document No. CN201777132U, publication No. 2011.03.30, a chassis for a passenger car is disclosed, which includes a frame, front and rear wheels, front and rear axles connecting the frame and the front and rear wheels, and a power battery fixed to the frame. The frame is a truss type frame and comprises main longitudinal beams (arranged in a length direction of the frame) which are arranged in an extending mode along the advancing direction of a vehicle, wherein the main longitudinal beams are main bearing parts of the frame and are important parts for forming the frame, the main longitudinal beams of the frame are combined with a main cross beam to form a body of the frame, three sections of front main longitudinal beams, a middle main longitudinal beam and a rear main longitudinal beam are arranged on the frame correspondingly, the front main longitudinal beams are positioned at the front part of the frame, the middle main longitudinal beams are positioned at the middle part of the frame, the rear main longitudinal beams are positioned at the tail part of the vehicle, and a plurality of front main longitudinal. The frame is also provided with a reinforced side wall which is arranged along the vertical direction and is connected with the frame part on the horizontal plane. In addition, a wheel-side motor drive axle is adopted at the rear axle of the chassis, so that the height of the frame at the rear part can be reduced, the whole body of a personnel circulation channel in the vehicle is favorably realized on the same horizontal plane, and passengers can get on or off the vehicle conveniently and personnel in the vehicle can flow at the rear part of the carriage conveniently.
But there are problems in that: in this chassis, power battery arranges the middle section at the frame, and the frame middle section is because the requirement of satisfying the low floor, so ground clearance is less, and the installation space that can provide the battery is less, arranges the power battery integration in the middle section of frame, and the installation quantity that not only can the battery receives the restriction, directly influences the duration of vehicle to still can compress the installation space of various interconnecting link in the battery, be unfavorable for the maintenance in battery later stage, change. Therefore, the battery is arranged at the middle section of the frame, and the problems that the battery is limited to be installed and difficult to overhaul are caused.
Disclosure of Invention
The invention aims to provide a frame, which can solve the problems of limited battery installation and difficult maintenance caused by the arrangement of batteries on the frame in the prior art; another object of the present invention is to provide a low floor vehicle using the vehicle frame, which can improve the cruising ability of the low floor vehicle and facilitate the inspection of the low floor vehicle.
In order to achieve the purpose, the low-floor vehicle adopts the following technical scheme:
the low-floor vehicle comprises a frame, wherein the frame comprises a rear frame axle section and a rear frame section at the rear side of the rear frame axle section, the rear frame axle section is provided with two rear frame main longitudinal beams arranged along the length direction of the frame, the rear frame section comprises rear frame main longitudinal beams arranged along the length direction of the frame, the rear frame main longitudinal beams are arranged at intervals along the width direction of the frame, a rear frame main cross beam is arranged at the joint of the rear frame axle section and the rear frame section, the front end of each rear frame main longitudinal beam is fixed on the rear frame main cross beam, at least one rear frame main longitudinal beam positioned at the outermost side in the width direction of the frame is an outer side staggered beam horizontally staggered with the rear frame main longitudinal beams, and at least one outer side staggered beam side forms a battery box installation space horizontally arranged with the outer side staggered beams and positioned at the outer side of the battery.
The beneficial effects are that: in order to arrange the battery box at frame back end department, form great installation space at the frame back end, remove back end main longitudinal beam along the horizontal direction dislocation, one of them is outside dislocation roof beam in the back end main longitudinal beam, battery box installation space arranges the side at outside dislocation roof beam, can effectively utilize the space of frame back end, this space is compared in the frame middle section among the prior art and will be big, the requirement of ground clearance is not high, it is also comparatively nimble to the arrangement of battery box, the quantity that can increase the battery box improves the duration of vehicle, can have enough big space again to overhaul the battery box and change.
Furthermore, a battery box support is arranged in the battery box installation space and comprises a support rod which is combined to form a frame structure, and a connection short section for enhancing the strength of the frame is arranged between the support rod and the rear main longitudinal beam.
The beneficial effects are that: be provided with the connection nipple joint between battery box support and back end main longitudinal beam, can improve the local structural strength of back end main longitudinal beam and bracing piece side, avoid battery box support department to lack the support and the not enough problem of structural strength who leads to.
Furthermore, the battery box bracket comprises an interlayer arranged along the vertical direction, sectional materials for fixing the battery box are arranged in the interlayer respectively, and a through hole for a fastener to pass through is formed in each sectional material; and extension supports are arranged in the upper spaces of the battery box support and the rear main longitudinal beam, and sectional materials for fixing the battery box are arranged in the extension supports.
The beneficial effects are that: the extension support is additionally arranged in the frame and can support more battery boxes in the frame, so that the cruising ability of the vehicle is improved.
Furthermore, the bottom layer of the battery box support comprises an overhanging beam which extends along the length direction of the frame, and a reinforcing angle is arranged between the overhanging beam and the rear axle section of the frame.
The beneficial effects are that: and a reinforcing angle is arranged between the overhanging beam and the rear axle section of the frame, so that the connection strength between the overhanging beam and the rear axle section of the frame can be improved.
In order to achieve the purpose, the frame adopts the following technical scheme:
the frame comprises a rear frame axle section and a rear frame section located on the rear side of the rear frame axle section, wherein the rear frame axle section is provided with two rear frame main longitudinal beams arranged along the length direction of the frame, the rear frame section comprises two rear frame main longitudinal beams arranged along the length direction of the frame, the rear frame main longitudinal beams are arranged along the width direction of the frame at intervals, a rear frame main cross beam is arranged at the joint of the rear frame axle section and the rear frame section, the front end of each rear frame main longitudinal beam is fixed on the rear frame main cross beam, at least one rear frame main longitudinal beam located on the outermost side in the width direction of the frame is an outer side staggered beam horizontally staggered with the rear frame main longitudinal beams, and at least one outer side staggered beam side forms a battery box installation space horizontally arranged with the outer side staggered beams and located on the outer side of the battery box.
The beneficial effects are that: in order to arrange the battery box at frame back end department, form great installation space at the frame back end, remove back end main longitudinal beam along the horizontal direction dislocation, one of them is outside dislocation roof beam in the back end main longitudinal beam, battery box installation space arranges the side at outside dislocation roof beam, can effectively utilize the space of frame back end, this space is compared in the frame middle section among the prior art and will be big, the requirement of ground clearance is not high, it is also comparatively nimble to the arrangement of battery box, the quantity that can increase the battery box improves the duration of vehicle, can have enough big space again to overhaul the battery box and change.
Furthermore, a battery box support is arranged in the battery box installation space and comprises a support rod which is combined to form a frame structure, and a connection short section for enhancing the strength of the frame is arranged between the support rod and the rear main longitudinal beam.
The beneficial effects are that: be provided with the connection nipple joint between battery box support and back end main longitudinal beam, can improve the local structural strength of back end main longitudinal beam and bracing piece side, avoid battery box support department to lack the support and the not enough problem of structural strength who leads to.
Furthermore, the battery box bracket comprises an interlayer arranged along the vertical direction, sectional materials for fixing the battery box are arranged in the interlayer respectively, and a through hole for a fastener to pass through is formed in each sectional material; and extension supports are arranged in the upper spaces of the battery box support and the rear main longitudinal beam, and sectional materials for fixing the battery box are arranged in the extension supports.
The beneficial effects are that: the extension support is additionally arranged in the frame and can support more battery boxes in the frame, so that the cruising ability of the vehicle is improved.
Furthermore, the bottom layer of the battery box support comprises an overhanging beam which extends along the length direction of the frame, and a reinforcing angle is arranged between the overhanging beam and the rear axle section of the frame.
The beneficial effects are that: and a reinforcing angle is arranged between the overhanging beam and the rear axle section of the frame, so that the connection strength between the overhanging beam and the rear axle section of the frame can be improved.
Drawings
FIG. 1 is a schematic view of the overall construction of the frame of the present invention;
FIG. 2 is a partial structural schematic view of the vehicle frame of the present invention;
FIG. 3 is a rear end structural view of the frame of the present invention;
FIG. 4 is a schematic view of the rear frame section and the battery box of the present invention;
FIG. 5 is a side view of the rear frame section in cooperation with the battery box of the present invention;
FIG. 6 is a schematic structural view of a battery box bracket of the vehicle frame of the present invention;
fig. 7 is a schematic structural view of the battery box bracket from another view angle of fig. 6.
In the figure: 1. a front frame section; 2. a front axle section of the frame; 3. a middle frame section; 4. a rear axle section of the frame; 41. a rear axle main longitudinal beam; 5. a rear frame section; 51. a horizontal beam; 52. connecting short sections; 53. a reinforcement angle; 54. a cantilever beam; 6. a right stringer; 7. a left stringer; 8. a section bar; 9. a battery box.
Detailed Description
The embodiments of the present invention will now be described with reference to the accompanying drawings.
The low-floor vehicle comprises a frame and a skin arranged on the frame, wherein the frame adopts a five-section structure as shown in figure 1 and comprises a frame front section 1, a frame middle section 3 and a frame rear section 5 which are sequentially arranged along the advancing direction of the vehicle, a frame front axle section 2 is arranged between the frame front section 1 and the frame middle section 3, and a frame rear axle section 4 is arranged between the frame middle section 3 and the frame rear section 5. The frame front section 1, the frame front axle section 2, the frame rear axle section 4 and the frame rear section 5 adopt truss structures, and the frame middle section 3 adopts a combined reinforcing structure of a girder and a truss. The front frame section 1 adopts sectional materials with different lengths to form a supporting structure, and the middle frame section 3 adopts an inclined strut to be connected with a crossbeam.
The forward and backward movement directions of the vehicle are defined as the front and rear directions, i.e., the longitudinal direction of the vehicle frame, and the width direction of the vehicle is defined as the left and right directions. The rear axle section of the frame has rear axle main longitudinal beams 41 arranged along the length direction of the frame, the rear axle main longitudinal beams 41 are provided with two rear axle main longitudinal beams which are arranged along the length direction of the frame and are arranged at intervals along the left and right direction, the rear end of the frame comprises the rear end main longitudinal beams arranged along the length direction of the frame, the rear end main longitudinal beams are provided with two rear axle main longitudinal beams which are arranged along the width direction of the frame, a rear axle main cross beam is arranged at the joint of the rear axle section of the frame and the rear end of the frame, the front end of the rear end main longitudinal beam is fixed on the rear axle main cross beam, one rear end main longitudinal beam which is positioned at the outermost side in the width direction of the frame is an outer side staggered beam horizontally staggered with the rear axle main longitudinal beams 41. As shown in fig. 2, the two rear main longitudinal beams include a left longitudinal beam 7 and a right longitudinal beam 6, the left longitudinal beam 7 and the right longitudinal beam 6 are respectively staggered with the rear axle main longitudinal beam 41, the right longitudinal beam 6 forms an outside staggered beam, and a battery box installation space for technicians to assemble the battery box is formed on the right side of the right longitudinal beam 6. The right side of right longeron 6 has formed a great installation space in frame back end 5, be provided with the battery box support that is used for fixed battery box 9 in this installation space, the battery box support is located the right side of right longeron 6, left longeron 7 forms the arrangement form of battery box installation space with the dislocation arrangement mode of right longeron 6 in frame back end 5, the battery box 9 is placed to the space that has utilized frame back end 5, the space is compared in the frame middle section among the prior art will be big, the requirement of ground clearance is not high, it is also comparatively nimble to the arrangement mode of battery box 9, the quantity that can increase battery box 9 improves the duration of vehicle, can have enough big space again to overhaul the change to battery box 9.
As shown in fig. 3, a plurality of sectional materials 8 for supporting the battery box 9 are provided on the right side of the right side member 6, and the sectional materials 8 are combined with other truss structures to support the battery box 9 to form a battery box support. The profile 8 is arranged in a horizontal direction, the profile 8 having a support surface for supporting a side or bottom surface of the battery box 9, and the profile 8 being provided with perforations through which fasteners can be passed, which fasteners can be used by a technician to fix the battery box to the profile 8 in order to fix it. A plurality of profiles 8 are provided in the battery box holder along the vertical direction, and a plurality of battery boxes 9 can be supported in the vertical direction. As shown in fig. 5, two layers of battery cases 9 are arranged inside the battery case support, and the battery cases 9 cannot be directly placed on the right sides of the two battery cases 9 fixed in the battery case support because of the left side member 7. As shown in fig. 4 and 5, an extension bracket fixed to the rear portion of the vehicle body frame is provided above the battery box bracket and the left side member 7, the extension bracket is arranged along the width direction of the vehicle body frame, two battery boxes 9 are provided on the extension bracket, one of the two battery boxes 9 is provided above the battery box bracket, and the other is provided above the left side member 7. Thereby increasing the number of battery boxes 9 in the vehicle and improving the cruising ability.
As shown in fig. 6 and 7, the battery box support in the rear frame section 5 is provided with a support rod forming a frame structure, the support rod includes a horizontal beam 51 arranged along a horizontal plane, the horizontal beam 51 is provided with a profile 8, the horizontal beams 51 arranged in parallel are respectively provided with a profile 8, and the profiles 8 can be matched with each other to fix the bottom of the battery box 9. And between the horizontal beam 51 and the rear main longitudinal beam which are arranged at intervals up and down, a connection short section 52 for connecting the rear main longitudinal beam and the horizontal beam is arranged, and the connection short section 52 is arranged along the vertical direction, so that the local structural strength of the lateral side of the outside dislocation beam can be improved. At the bottom of battery box support, be provided with along the overhanging roof beam 54 that extends the arrangement of fore-and-aft direction, between overhanging roof beam 54 and frame rear axle section, be provided with the reinforcing angle 53 that strengthens both joint strength, reinforcing angle 53 is the panel of triangle-shaped.
In other embodiments, both the left longitudinal beam and the right longitudinal beam can be arranged as outer side dislocation beams, the left longitudinal beam moves to the right in the original position, the right longitudinal beam moves to the left in the original position, and an installation space for installing the battery box is formed in the frame through dislocation of the left longitudinal beam and the right longitudinal beam.
In other embodiments, the extension bracket is not arranged above the battery box bracket and the left longitudinal beam, or the extension bracket is only arranged above the battery box bracket, or the extension bracket is only arranged above the left longitudinal beam.
The frame in the present invention has the same structure as the frame in the above-described low floor vehicle embodiment, and therefore, description thereof will not be repeated.
The above-mentioned embodiments, the objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (8)

1. Low floor vehicle, including the frame, the frame includes frame rear axle section and the frame back end that is in frame rear axle section rear side, and frame rear axle section has the rear axle main longitudinal girder of arranging along frame length direction, and the frame back end includes the back end main longitudinal girder of arranging along frame length direction, its characterized in that: the rear main longitudinal beam is provided with two and arranged along the width direction of the frame at intervals, a rear axle main cross beam is arranged at the joint of the rear axle section of the frame and the rear axle section of the frame, the front end of the rear main longitudinal beam is fixed on the rear axle main cross beam, at least one rear main longitudinal beam which is positioned on the outermost side in the width direction of the frame is an outer side staggered beam horizontally staggered with the rear axle main longitudinal beam, and the side of at least one outer side staggered beam forms a battery box installation space which is horizontally arranged with the outer side staggered beam and is positioned on the outer side of the outer side staggered beam.
2. The low floor vehicle of claim 1, wherein: the battery box comprises a battery box mounting space, and is characterized in that a battery box support is arranged in the battery box mounting space and comprises a support rod which is combined to form a frame structure, and a connection short section for enhancing the strength of a frame is arranged between the support rod and the rear main longitudinal beam.
3. The low-floor vehicle of claim 2, characterized in that: the battery box bracket comprises an interlayer arranged along the vertical direction, sectional materials for fixing the battery box are arranged in the interlayer respectively, and through holes for the fasteners to pass through are formed in the sectional materials; and extension supports are arranged in the upper spaces of the battery box support and the rear main longitudinal beam, and sectional materials for fixing the battery box are arranged in the extension supports.
4. A low-floor vehicle according to claim 2 or 3, characterized in that: the bottom layer of the battery box support comprises an overhanging beam which extends along the length direction of the frame, and a reinforcing angle is arranged between the overhanging beam and the rear axle section of the frame.
5. The frame, including frame rear axle section and the frame back end that is in frame rear axle section rear side, frame rear axle section has the rear axle main longitudinal beam who arranges along frame length direction, and the frame back end includes the back end main longitudinal beam who arranges along frame length direction, its characterized in that: the rear main longitudinal beam is provided with two and arranged along the width direction of the frame at intervals, a rear axle main cross beam is arranged at the joint of the rear axle section of the frame and the rear axle section of the frame, the front end of the rear main longitudinal beam is fixed on the rear axle main cross beam, at least one rear main longitudinal beam which is positioned on the outermost side in the width direction of the frame is an outer side staggered beam horizontally staggered with the rear axle main longitudinal beam, and the side of at least one outer side staggered beam forms a battery box installation space which is horizontally arranged with the outer side staggered beam and is positioned on the outer side of the outer side staggered beam.
6. The frame of claim 5, wherein: the battery box comprises a battery box mounting space, and is characterized in that a battery box support is arranged in the battery box mounting space and comprises a support rod which is combined to form a frame structure, and a connection short section for enhancing the strength of a frame is arranged between the support rod and the rear main longitudinal beam.
7. The frame of claim 6, wherein: the battery box bracket comprises an interlayer arranged along the vertical direction, sectional materials for fixing the battery box are arranged in the interlayer respectively, and through holes for the fasteners to pass through are formed in the sectional materials; and extension supports are arranged in the upper spaces of the battery box support and the rear main longitudinal beam, and sectional materials for fixing the battery box are arranged in the extension supports.
8. The frame as claimed in claim 6 or 7, wherein: the bottom layer of the battery box support comprises an overhanging beam which extends along the length direction of the frame, and a reinforcing angle is arranged between the overhanging beam and the rear axle section of the frame.
CN201811161643.9A 2018-09-30 2018-09-30 Low-floor vehicle and frame thereof Active CN110962935B (en)

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Application Number Priority Date Filing Date Title
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CN110962935A true CN110962935A (en) 2020-04-07
CN110962935B CN110962935B (en) 2024-06-21

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CN102632925A (en) * 2011-02-12 2012-08-15 宋其华 Frame structure for electric passenger vehicle
CN202294976U (en) * 2011-11-02 2012-07-04 常州黄海汽车有限公司 Low-inlet electric motor coach and underframe thereof
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Publication number Priority date Publication date Assignee Title
WO2022226619A1 (en) * 2021-04-30 2022-11-03 Marcopolo S.A. Magazine for electrification items, public service vehicle and method for mounting the magazine
CN113212554A (en) * 2021-05-24 2021-08-06 浙江吉利控股集团有限公司 Frame for vehicle and vehicle

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