CN109131387A - Full aluminium electric flatbed tricycle - Google Patents
Full aluminium electric flatbed tricycle Download PDFInfo
- Publication number
- CN109131387A CN109131387A CN201811230115.4A CN201811230115A CN109131387A CN 109131387 A CN109131387 A CN 109131387A CN 201811230115 A CN201811230115 A CN 201811230115A CN 109131387 A CN109131387 A CN 109131387A
- Authority
- CN
- China
- Prior art keywords
- connect
- vehicle frame
- electric flatbed
- full aluminium
- bogie
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 22
- 239000004411 aluminium Substances 0.000 title claims abstract description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000013016 damping Methods 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 230000032258 transport Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 208000016261 weight loss Diseases 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D15/00—Other railway vehicles, e.g. scaffold cars; Adaptations of vehicles for use on railways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/26—Compressed-air systems
- B60T13/40—Compressed-air systems indirect, i.e. compressed air booster units indirect systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
- B61C17/04—Arrangement or disposition of driving cabins, footplates or engine rooms; Ventilation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/041—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures with bodies characterised by use of light metal, e.g. aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/043—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures connections between superstructure sub-units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
Abstract
The invention discloses a kind of full aluminium electric flatbed tricycles, it is characterized by comprising vehicle frames, battery case, driver's cabin, steering assembly, driving motor component and braking system, battery case is arranged in bottom of frame, the outside of vehicle frame one end is arranged in driver's cabin, the bottom of vehicle frame is equipped with the wheel cooperated with track, wheel is connect with driving motor component, steering assembly includes support base, rubber bumper, pivoting support, bogie and revolving support connector, the side of wheel is arranged in support base, the top of support base is arranged in rubber bumper, the top of rubber bumper is connect with bogie, the top of bogie is arranged in revolving support connector, pivoting support is connect with revolving support connector, the top of pivoting support and the bottom of vehicle frame connect.Full aluminium electric flatbed tricycle complete vehicle weight of the invention is relatively light, safety, transport is stable, conevying efficiency is high, and energy-saving and environment-friendly electric flatbed tricycle is transported for inside plants and used.
Description
Technical field
The present invention relates to equipment technology field of transport, and in particular to a kind of full aluminium electric flatbed tricycle.
Background technique
Large-scale manufacturing enterprise is being modernized, since there are a certain distance for each workshop, so in production process
In, it needs using electric flatbed tricycle as material work implements.Current electric flatbed tricycle uses iron and steel material quality, complete vehicle weight
Heavier, energy consumption is high, and conevying efficiency is low, and maintenance cost is high, and driver's cabin is arranged on shipping platform, occupies flat car and transports load-carrying
Capacity, safety is poor, and existing electric flatbed tricycle cornering difficulties, and easy derailing leads to safety accident.Therefore, it mentions
Stablize for a kind of safety, transport, conevying efficiency is high, energy-saving and environment-friendly electric flatbed tricycle is very important.
Summary of the invention
The purpose of the invention is to relatively light, the safeties that overcomes the deficiencies of the prior art and provide a kind of complete vehicle weight
Can be good, transport is stablized, and maintenance cost is low, and conevying efficiency is high, and energy-saving and environment-friendly electric flatbed tricycle makes for manufacturing enterprise's inside transport
With.
Technical scheme is as follows:
A kind of full aluminium electric flatbed tricycle, it is characterised in that: including vehicle frame, battery case, driver's cabin, steering assembly, driving electricity
Thermomechanical components and braking system, the battery case are arranged in bottom of frame, and the outside of vehicle frame one end is arranged in the driver's cabin, described
Vehicle frame includes main longitudinal grider, crossbeam and bottom girder, and the main longitudinal grider is connected with crossbeam, and the bottom of crossbeam is arranged in the bottom girder,
The bottom of the vehicle frame is equipped with the wheel cooperated with track, and the wheel is connect with driving motor component, the steering assembly packet
Support base, rubber bumper, pivoting support, bogie and revolving support connector are included, the one of wheel is arranged in the support base
The top of support base is arranged in side, the rubber bumper, and the top of the rubber bumper is connect with bogie, the revolution
The top of bogie is arranged in support connector, and the pivoting support is connect with revolving support connector, the pivoting support
Top and the bottom of vehicle frame connect, and the side for connecting with vehicle frame and being located at wheel is arranged in the braking system.
As a preferred technical solution of the present invention, the bogie is surrounded by triangle stiffening plate, the steering
Frame is equipped with the positioning plate for steering angle limiting.
As a preferred technical solution of the present invention, the braking system include air accumulator, brake pedal, brake disc,
The top of driver's cabin is arranged in aerodynamic brake mechanism and axletree, the air accumulator, and the air accumulator passes through air hose and gas
Dynamic braking mechanism connection, the aerodynamic brake mechanism are connect with brake disc, and the brake disc is described by key and wheel axis connection
Brake pedal is connect with air hose, and the air hose is equipped with air-operated solenoid valve.
As a preferred technical solution of the present invention, the aerodynamic brake mechanism include brake cylinder, spring, push rod and
Brake shoes, the air hose are connect with brake cylinder, and the brake cylinder is connect with push rod, and push rod is arranged in the spring
The other end of one end, the brake shoes and push rod connects.
As a preferred technical solution of the present invention, the air accumulator is equipped with pressure gauge.
As a preferred technical solution of the present invention, the vehicle frame is surrounded by anticollison block.
As a preferred technical solution of the present invention, the side of the wheel is equipped with stay bolt and damping spring, described
Damping spring covers in stay bolt, and one end of the stay bolt is connect with vehicle frame.
As a preferred technical solution of the present invention, the vehicle frame and driver's cabin are made of aluminium alloy.
The invention has the advantages that
1, the present invention uses all-aluminium construction design concept, is designed using alloyed aluminium variable section, uses interspersed construction comprehensively
Design, vehicle frame entirety stress improve vehicle frame stiffness and strength, make up aluminum alloy piping welding performance and the low disadvantage of rigidity, carry energy
Power is better than conventional steel flat car.Compared to conventional steel flat car, vehicle weight-loss ratio reaches 40% or more.
2, the present invention uses full aluminium vehicle frame, reduces vehicle center of gravity, significantly reduces turning rollover probability, improves object
Expect the safety of transport.
3, cabin design of the present invention is in frame side, middle control platform lateral arrangement, and vehicle moves forward and backward, has good
The visual field avoids encountering driver's cabin in handling product, and avoid reversing when because material blocks sight, cause traffic safety accident
Occur；Driver's cabin is arranged on shipping platform, is not take up flat car transport load-carrying capacity, improves transport load-carrying capacity.
4, steering assembly is arranged in bottom of frame in the present invention, and steering driving mechanism is designed using four-wheel drive, effectively avoided
Vehicle has skidded phenomenon when heavy duty and turning, guarantees that transport is stablized, improves material transfer efficiency.
5, vehicle braking system of the invention uses aerobraking, and braking distance foreshortens to 6 meters by original 15 meters, and mechanism
Become air hose connection, the more operation of adaptation complex road condition from the original hard connection of machinery, improves the braking system service life, operate
Simply, easy to maintenance, braking system reliability is substantially increased, the guarantee of vehicle operational safety is improved.
Detailed description of the invention
Fig. 1 is the main structure figure of full aluminium electric flatbed tricycle of the invention.
Fig. 2 is the overlooking structure figure of full aluminium electric flatbed tricycle of the invention.
Fig. 3 is the side block diagram of full aluminium electric flatbed tricycle of the invention.
Fig. 4 is the structural schematic diagram of steering assembly of the present invention.
Fig. 5 is the structural schematic diagram of braking system of the present invention.
The opposite component names of serial number in figure:
Vehicle frame 1, battery case 2, driver's cabin 3, wheel 4, main longitudinal grider 5, crossbeam 6, bottom girder 7, steering assembly 8, rear steering group
Part 7, main longitudinal grider 8, anticollison block 9, driving motor component 10, support base 11, rubber bumper 12, pivoting support 13, bogie 14,
Revolving support connector 15, triangle stiffening plate 16, positioning plate 17, stay bolt 18, damping spring 19, air accumulator 20, brake pedal
21, air-operated solenoid valve 22, brake cylinder 23, spring 24, push rod 25, brake shoes 26, brake disc 27, key 28, axletree 29, air
Hose 30, pressure gauge 31.
Specific embodiment
The full aluminium electric flatbed tricycle of the present invention is further described with reference to the accompanying drawings and embodiments.
Embodiment 1
As shown in Figs 1-4, a kind of full aluminium electric flatbed tricycle of the invention, including vehicle frame 1, battery case 2, driver's cabin 3, steering
Component, driving motor component 10 and braking system, in 1 bottom of vehicle frame, the driver's cabin 3 is arranged in vehicle for the setting of battery case 2
The outside of 1 one end of frame, the vehicle frame 1 include main longitudinal grider 5, crossbeam 6 and bottom girder 7, and the main longitudinal grider 5 and crossbeam 6 connect, described
The bottom of crossbeam 6 is arranged in bottom girder 7, and the bottom of the vehicle frame 1 is equipped with the wheel 4 cooperated with track, the wheel 4 and driving
Electric machine assembly 10 connects, and the steering assembly includes support base 11, rubber bumper 12, pivoting support 13, bogie 14 and returns
Turn support connector 15, the side of wheel 4 is arranged in the support base 11, and support base 11 is arranged in the rubber bumper 12
The top of top, the rubber bumper 12 is connect with bogie 14, and the revolving support connector 15 is arranged in bogie 14
Top, the pivoting support 13 connect with revolving support connector 15, the top of the pivoting support 13 and the bottom of vehicle frame 1
The side for connecting with vehicle frame and being located at wheel 4 is arranged in connection, the braking system.
The bogie 14 is surrounded by triangle stiffening plate 16, and the bogie 14, which is equipped with, is used for steering angle limiting
Positioning plate 17.
As shown in figure 5, the braking system include air accumulator 20, brake pedal 21, brake disc 27, aerodynamic brake mechanism and
The top of driver's cabin 3 is arranged in axletree 29, the air accumulator 20, and the air accumulator 20 passes through air hose 30 and aerodynamic brake
Mechanism connection, the aerodynamic brake mechanism are connect with brake disc 27, and the brake disc 27 is connect by key 28 with axletree 29, institute
It states brake pedal 21 to connect with air hose 30, the air hose 30 is equipped with air-operated solenoid valve 22.
The aerodynamic brake mechanism includes brake cylinder 23, spring 24, push rod 25 and brake shoes 26, the air hose 30
It is connect with brake cylinder 23, the brake cylinder 23 is connect with push rod 25, and one end of push rod 25 is arranged in the spring 24, described
Brake shoes 26 is connect with the other end of push rod 25.
The air accumulator 20 is equipped with pressure gauge 31.
The vehicle frame 1 is surrounded by anticollison block 9.
The side of the wheel 4 be equipped with stay bolt 18 and damping spring 19,19 sets of the damping spring in stay bolt 18,
One end of the stay bolt 18 is connect with vehicle frame.
The vehicle frame 1 is made with driver's cabin 3 of aluminium alloy.
The present invention is mainly made of aluminium alloy, and complete vehicle weight is relatively light, energy conservation and environmental protection, and the outer of vehicle frame is arranged in driver's cabin
Side is not take up flat car transport capacity, avoids encountering driver's cabin in handling profile, safety is good, is arranged back in bottom of frame
Turn component, turning is easy, and transport is stablized, and conevying efficiency is high.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (8)
1. a kind of full aluminium electric flatbed tricycle, it is characterised in that: including vehicle frame (1), battery case (2), driver's cabin (3), steering assembly,
Driving motor component (10) and braking system, battery case (2) setting exist in vehicle frame (1) bottom, driver's cabin (3) setting
The outside of vehicle frame (1) one end, the vehicle frame (1) include main longitudinal grider (5), crossbeam (6) and bottom girder (7), the main longitudinal grider (5) and
Crossbeam (6) connection, in the bottom of crossbeam (6), the bottom of the vehicle frame (1) is equipped with to be cooperated with track for bottom girder (7) setting
Wheel (4), the wheel (4) connect with driving motor component (10), and the steering assembly includes that support base (11), rubber are slow
Device (12), pivoting support (13), bogie (14) and revolving support connector (15) are rushed, the support base (11) is arranged in wheel
(4) side, the rubber bumper (12) setting in the top of support base (11), the top of the rubber bumper (12) with
Bogie (14) connection, the revolving support connector (15) are arranged in the top of bogie (14), the pivoting support (13)
It is connect with revolving support connector (15), the top of the pivoting support (13) is connect with the bottom of vehicle frame (1), the braking system
System setting is in the side that wheel (4) are connect and be located at vehicle frame.
2. full aluminium electric flatbed tricycle according to claim 1, it is characterised in that: the bogie (14) is surrounded by three
Angle stiffening plate (16), the bogie (14) are equipped with the positioning plate (17) for steering angle limiting.
3. full aluminium electric flatbed tricycle according to claim 1, it is characterised in that: the braking system includes air accumulator
(20), brake pedal (21), brake disc (27), aerodynamic brake mechanism and axletree (29), air accumulator (20) setting are being driven
The top of room (3) is sailed, the air accumulator (20) is connect by air hose (30) with aerodynamic brake mechanism, the aerodynamic brake machine
Structure is connect with brake disc (27), and the brake disc (27) is connect by key (28) with axletree (29), the brake pedal (21)
It is connect with air hose (30), the air hose (30) is equipped with air-operated solenoid valve (22).
4. full aluminium electric flatbed tricycle according to claim 3, it is characterised in that: the aerodynamic brake mechanism includes braking gas
Cylinder (23), spring (24), push rod (25) and brake shoes (26), the air hose (30) connect with brake cylinder (23), described
Brake cylinder (23) is connect with push rod (25), the spring (24) setting in one end of push rod (25), the brake shoes (26) with
The other end of push rod (25) connects.
5. full aluminium electric flatbed tricycle according to claim 3, it is characterised in that: the air accumulator (20) is equipped with pressure gauge
(31)。
6. full aluminium electric flatbed tricycle according to claim 1, it is characterised in that: the vehicle frame (1) is surrounded by anticollision
Block (9).
7. full aluminium electric flatbed tricycle according to claim 1, it is characterised in that: the side of the wheel (4) is equipped with long spiral shell
Bolt (18) and damping spring (19), the damping spring (19) cover in the stay bolt (18), one end of the stay bolt (18) with
Vehicle frame connection.
8. full aluminium electric flatbed tricycle according to claim 1, it is characterised in that: the vehicle frame (1) and driver's cabin (3) are by aluminium
Alloy is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230115.4A CN109131387A (en) | 2018-10-22 | 2018-10-22 | Full aluminium electric flatbed tricycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230115.4A CN109131387A (en) | 2018-10-22 | 2018-10-22 | Full aluminium electric flatbed tricycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109131387A true CN109131387A (en) | 2019-01-04 |
Family
ID=64809186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811230115.4A Pending CN109131387A (en) | 2018-10-22 | 2018-10-22 | Full aluminium electric flatbed tricycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109131387A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4834608A (en) * | 1988-01-14 | 1989-05-30 | Middaugh Frank R | Railroad car for hauling large highway trucks and method of loading |
| CN201092317Y (en) * | 2007-11-02 | 2008-07-30 | 中国南车集团眉山车辆厂 | Caboose car |
| CN201566542U (en) * | 2009-10-28 | 2010-09-01 | 湖北三江航天万山特种车辆有限公司 | Haulage vehicle for track slabs |
| CN201825044U (en) * | 2010-07-28 | 2011-05-11 | 济南轨道交通装备有限责任公司 | Railway flatcar capable of being provided with subway line cleaner |
| CN202082317U (en) * | 2011-01-28 | 2011-12-21 | 中国铁道科学研究院机车车辆研究所 | Compact disc-shaped braking clamp of rail transit car braking system |
| DE102013000362A1 (en) * | 2013-01-10 | 2014-07-10 | Man Truck & Bus Ag | Cab suspension has cab floor connected to vehicle bodies by spring elements, where cab floor and vehicle body are additionally connected directly or indirectly with longitudinal stabilizer running in vehicle longitudinal direction |
| CN203920906U (en) * | 2014-06-27 | 2014-11-05 | 湖南晟通天力汽车有限公司 | Electric transporting vehicle |
| CN209064093U (en) * | 2018-10-22 | 2019-07-05 | 南南铝业股份有限公司 | Full aluminium electric flatbed tricycle |
-
2018
- 2018-10-22 CN CN201811230115.4A patent/CN109131387A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4834608A (en) * | 1988-01-14 | 1989-05-30 | Middaugh Frank R | Railroad car for hauling large highway trucks and method of loading |
| CN201092317Y (en) * | 2007-11-02 | 2008-07-30 | 中国南车集团眉山车辆厂 | Caboose car |
| CN201566542U (en) * | 2009-10-28 | 2010-09-01 | 湖北三江航天万山特种车辆有限公司 | Haulage vehicle for track slabs |
| CN201825044U (en) * | 2010-07-28 | 2011-05-11 | 济南轨道交通装备有限责任公司 | Railway flatcar capable of being provided with subway line cleaner |
| CN202082317U (en) * | 2011-01-28 | 2011-12-21 | 中国铁道科学研究院机车车辆研究所 | Compact disc-shaped braking clamp of rail transit car braking system |
| DE102013000362A1 (en) * | 2013-01-10 | 2014-07-10 | Man Truck & Bus Ag | Cab suspension has cab floor connected to vehicle bodies by spring elements, where cab floor and vehicle body are additionally connected directly or indirectly with longitudinal stabilizer running in vehicle longitudinal direction |
| CN203920906U (en) * | 2014-06-27 | 2014-11-05 | 湖南晟通天力汽车有限公司 | Electric transporting vehicle |
| CN209064093U (en) * | 2018-10-22 | 2019-07-05 | 南南铝业股份有限公司 | Full aluminium electric flatbed tricycle |
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