CN108545118B - Aluminum alloy totally-enclosed vehicle transportation semitrailer - Google Patents
Aluminum alloy totally-enclosed vehicle transportation semitrailer Download PDFInfo
- Publication number
- CN108545118B CN108545118B CN201810715064.8A CN201810715064A CN108545118B CN 108545118 B CN108545118 B CN 108545118B CN 201810715064 A CN201810715064 A CN 201810715064A CN 108545118 B CN108545118 B CN 108545118B
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- Prior art keywords
- assembly
- bottom plate
- door
- carriage
- plate assembly
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 20
- 239000000725 suspension Substances 0.000 claims abstract description 23
- 239000000956 alloy Substances 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 19
- 229910052782 aluminium Inorganic materials 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 241001286345 Cervaria rivini Species 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/04—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded
Abstract
The invention discloses an aluminum alloy totally-enclosed vehicle transportation semitrailer which is applied to the technical field of semitrailers and comprises a frame assembly, a left carriage plate assembly, a right carriage plate assembly, a front door assembly, a rear door assembly, an upper bottom plate assembly and a suspension assembly; the lifting mechanism is connected and arranged between the upper-layer bottom plate assembly and the frame assembly and can lift the upper-layer bottom plate assembly up and down. According to the invention, the aluminum alloy materials are used for selecting the car body structure part, and reasonable car body structure arrangement is adopted, so that the structural strength of the car body can be ensured on the basis of reducing the weight of the car body, and the maximum volume of the car is realized by lifting the upper-layer bottom plate assembly to the highest point, so that the car can transport as much goods as possible in the return process, the transportation cost is reduced, the transportation benefit of the car is improved, and the profit is increased.
Description
Technical Field
The invention belongs to the technical field of semi-trailers, and particularly relates to an aluminum alloy totally-enclosed type vehicle transportation semi-trailer.
Background
The existing vehicle transportation semitrailer market in China mainly exists in three structural forms of skeleton type, semi-closed type and full-closed type. The skeleton type car is characterized in that the skeleton type car is composed of upright posts, namely side plates, front plates, rear doors and top plates are omitted, the car is light in weight, low in cost and small in oil consumption, but inconvenient in transporting goods, and the car is easy to damage due to insufficient structural strength. The totally enclosed car transporting vehicle, namely the side plates and the front plates are all sealed by using the mask, the rear door is arranged, the top plate is a awning rod tarpaulin, and the car transporting vehicle has the advantages of high integral strength, car protection, other goods transportation, high dead weight, high cost and high oil consumption.
Disclosure of Invention
Therefore, the invention aims to provide the aluminum alloy fully-enclosed vehicle transportation semitrailer which is used for selecting aluminum alloy materials for the vehicle body structure part, adopts reasonable vehicle body structure arrangement, ensures the structural strength of the vehicle body on the basis of reducing the weight of the vehicle body, and realizes the maximization of the vehicle volume by lifting the upper-layer bottom plate assembly to the highest point, thereby realizing the transportation of the freight as much as possible during the return process of the car transportation vehicle, reducing the transportation cost, improving the transportation benefit of the vehicle and increasing the profit.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the aluminum alloy totally-enclosed vehicle transportation semitrailer comprises a frame assembly, a left carriage plate assembly, a right carriage plate assembly, a front door assembly, a rear door assembly, an upper bottom plate assembly and a suspension assembly, wherein the frame assembly comprises a front end connecting assembly, a middle connecting assembly and a suspension fixing beam assembly which are arranged from front to back; the left side and the right side of the front end connecting assembly, the middle connecting assembly and the suspension fixing beam assembly are respectively provided with an edge beam; the side beams are formed by connecting an aluminum side beam on the outer side and a steel side beam on the inner side, and a plurality of cross beams are vertically connected between the two side beams; the bottoms of the front end connecting assembly, the middle connecting assembly and the suspension fixing beam assembly are respectively provided with a plurality of local cross beams, local longitudinal beams and fixing beams which are made of aluminum alloy materials; the left carriage plate assembly and the right carriage plate assembly comprise carriage plates assembled by carriage plate units in a clamping way and upright posts fixedly connected with the adjacent carriage plates; the carriage plate unit is an aluminum profile formed by one-time extrusion and comprises a clamping joint at the head and the tail, a clamping groove and a hollow channel therebetween; the front door assembly and the rear door assembly comprise door plates assembled by the door plate units in a clamping mode and door frames for fixing the door plates; the door plate unit is an aluminum profile formed by one-time extrusion, and comprises a clamping joint, a clamping groove and a hollow channel between the clamping joint and the clamping groove, wherein the clamping joint and the clamping groove are all the same as the carriage plate unit; the door frame is made of steel; the upper-layer bottom plate assembly comprises an upper-layer front bottom plate assembly, an upper-layer rear bottom plate assembly and an upper-layer bottom plate connecting shaft assembly which is connected and arranged between the upper-layer front bottom plate assembly and the upper-layer rear bottom plate assembly; the upper front bottom plate assembly and the upper rear bottom plate assembly comprise frames and panels; the frame is formed by connecting a plurality of vertically staggered aluminum flat pipes and I-beams; the suspension assembly mainly comprises a tire, a transmission shaft and a power mechanism for driving the transmission shaft and the tire to rotate; the lifting mechanism is connected and arranged between the upper-layer bottom plate assembly and the frame assembly and can lift the upper-layer bottom plate assembly up and down.
Preferably, the jacking mechanism comprises hydraulic cylinders respectively positioned at the left side and the right side of the front end connecting assembly, the middle connecting assembly and the suspension fixing beam assembly, wherein the hydraulic cylinders in the middle connecting assembly and the suspension fixing beam assembly are arranged in the upright post.
Preferably, the upright post is formed by bending and welding steel plates, and the bottom and the side beam are welded into a whole.
Preferably, a split door is arranged at the middle part of the right carriage plate assembly.
Preferably, the thickness of the carriage plate unit is 20mm.
Preferably, the door panel unit has a thickness of 30mm.
Preferably, reinforcing ribs are arranged in the hollow channels of the carriage plate unit and the door plate unit.
Preferably, grooves are formed in two sides of the upright post; after the carriage plate is inserted into the groove, the carriage plate is fixedly connected with the upright post through a fastener.
The invention has the beneficial effects that: according to the invention, the aluminum alloy materials are used for selecting the car body structure part, and reasonable car body structure arrangement is adopted, so that the structural strength of the car body can be ensured on the basis of reducing the weight of the car body, and the maximum volume of the car is realized by lifting the upper-layer bottom plate assembly to the highest point, so that the car can transport as much goods as possible in the return process, the transportation cost is reduced, the transportation benefit of the car is improved, and the profit is increased.
Drawings
In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for description:
FIG. 1 is a perspective view of the present invention (hidden left side car plate assembly);
FIG. 2 is a front view of the present invention (concealing the left side deck assembly);
FIG. 3 is a rear view of the present invention;
FIG. 4 is a left side view of the present invention;
FIG. 5 is a right side view of the present invention;
FIG. 6 is a front view of the frame assembly;
FIG. 7 is a top view of the frame assembly;
FIG. 8 is a bottom view of the frame assembly;
FIG. 9 is a front view of the left side car plate assembly;
FIG. 10 is a cross-sectional view A-A of FIG. 9;
FIG. 11 is a schematic diagram of a deck unit;
FIG. 12 is a front view of the right side car plate assembly;
FIG. 13 is a cross-sectional view taken along line B-B of FIG. 12;
FIG. 14 is a top view of the upper floor assembly;
FIG. 15 is a front view of the upper floor assembly;
FIG. 16 is a cross-sectional view of FIG. 15;
FIG. 17 is an enlarged view of a portion of region M of FIG. 16;
FIG. 18 is a perspective cross-sectional view of the present invention;
fig. 19 is a partial enlarged view of the N region in fig. 18.
The figures are marked as follows: the frame assembly 1, the front end connection assembly 11, the middle connection assembly 12, the suspension fixing beam assembly 13, the side rail 14, the outer aluminum side rail 141, the inner steel side rail 142, the cross rail 15, the partial cross rail 16, the partial longitudinal rail 17, the fixing beam 18, the left side car plate assembly 2, the car plate unit 21, the clamping joint 211, the clamping groove 212, the hollow channel 213, the car plate 22, the upright post 23, the groove 231, the fastener 232, the right side car plate assembly 3, the side-by-side door 31, the front door assembly 4, the rear door assembly 5, the door panel 51, the door frame 52, the upper bottom plate assembly 6, the upper front bottom plate assembly 61, the upper rear bottom plate assembly 62, the upper bottom plate connection shaft assembly 63, the frame 64, the aluminum flat tube 641, the i-beam 642, the panel 65, the suspension assembly 7, and the hydraulic cylinder 8.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
1-5, an aluminum alloy totally-enclosed vehicle transportation semitrailer comprises a frame assembly 1, a left side carriage plate assembly 2, a right side carriage plate assembly 3, a front door assembly 4, a rear door assembly 5, an upper layer bottom plate assembly 6 and a suspension assembly 7, wherein the frame assembly 1 comprises a front end connecting assembly 11, a middle connecting assembly 12 and a suspension fixing beam assembly 13 which are arranged from front to back, as shown in fig. 6-8; the left side and the right side of the front end connecting assembly 11, the middle connecting assembly 12 and the suspension fixing beam assembly 13 are respectively provided with an edge beam 14; the side beams 14 are formed by connecting an outer aluminum side beam 141 and an inner steel side beam 142, as shown in fig. 18-19, a plurality of cross beams 15 are vertically connected between the two side beams 14; the bottoms of the front end connecting assembly 11, the middle connecting assembly 12 and the suspension fixing beam assembly 13 are respectively provided with a plurality of local cross beams 16, local longitudinal beams 17 and fixing beams 18 which are made of aluminum alloy materials, as shown in figure 8; the left carriage plate assembly 2 and the right carriage plate assembly 3 comprise carriage plates 22 assembled by the carriage plate units 21 in a clamping way, and upright posts 23 fixedly connected with the adjacent carriage plates 22, as shown in figures 9-12; the carriage plate unit 21 is an aluminum profile formed by one-time extrusion and comprises a clamping joint 211, a clamping groove 212 and a hollow channel 213 between the clamping joints; the front door assembly 4 and the rear door assembly 5 include door panels 51 assembled by the door panel units in a clamped manner, and door frames 52 for fixing the door panels 51 (the door panel units of the door panels 51 have the same structure and assembly mode as the carriage panel units 21, and only have the difference in the thickness of the plates, so the structure thereof is not shown in detail); the door plate unit is an aluminum profile formed by one-time extrusion, and comprises a clamping joint, a clamping groove and a hollow channel between the clamping joint and the clamping groove, wherein the clamping joint and the clamping groove are the same as the carriage plate unit 21; the door frame 52 is made of steel; the upper floor assembly 6 comprises an upper front floor assembly 61, an upper rear floor assembly 62 and an upper floor connecting shaft assembly 63 which are connected and arranged between the upper front floor assembly and the upper rear floor assembly, as shown in fig. 14-17; the upper front floor assembly 61, the upper rear floor assembly 62 includes a frame 64 and a panel 65; the frame 64 is formed by connecting a plurality of vertically staggered aluminum flat tubes 641 and an I-beam 642; the suspension assembly 7 mainly comprises a tire, a transmission shaft and a power mechanism for driving the transmission shaft and the tire to rotate, and the power mechanism is a conventional power mechanism arranged below a chassis of the semitrailer, so the power mechanism is not shown in detail in the figure; the lifting mechanism is connected and arranged between the upper-layer bottom plate assembly 6 and the frame assembly 1, and can lift the upper-layer bottom plate assembly 6 up and down.
In this embodiment, the frame structure of the frame assembly 1 has only two side beams 14 in the length direction of the vehicle body, that is, there are no additional longitudinal beams between the two side beams 14, so that the overall weight of the frame assembly is reduced, and the structure is a full-load structure, so that the center of gravity of the whole vehicle can be effectively reduced.
In this embodiment, the side beam 14 is formed by connecting an outer aluminum side beam 141 and an inner steel side beam 142, the strength of the side beam 14 is ensured by the inner steel side beam 142, but the overall weight of the side beam 14 is reduced by the outer aluminum side beam 141, and the outer aluminum side beam 141 can make the appearance of the whole car more attractive.
In this embodiment, the local cross beam 16, the local longitudinal beam 17 and the fixed beam 18 are made of aluminum alloy materials, and all the above components in the conventional structure are made of steel materials, so that the weight of the whole vehicle can be effectively reduced by replacing the components with aluminum alloy components under the condition of ensuring the overall strength.
In this embodiment, the lifting mechanism is used to lift the upper floor assembly 6 to the highest point to maximize the vehicle volume, so as to realize that the car transports as much cargo as possible in the return process, reduce the transportation cost, improve the transportation benefit of the car and increase the profit.
In this embodiment, the carriage plate unit 21 is an aluminum profile formed by one-time extrusion, and the carriage plate 22 is formed by connecting a plurality of carriage plate units 21 in series from end to end, and for the carriage plate of the steel fully-closed vehicle transportation semitrailer, most of the carriage plate is formed by welding steel corrugated plates, and the carriage plate 22 in this embodiment has the advantages of convenience in assembly forming, lighter weight, smooth and smooth surface, easiness in advertising by a vehicle enterprise, smaller wind resistance, contribution to reducing oil consumption and improving the capacity of resisting the carriage expansion. The door panel unit of the door panel 51 has the same structure and assembly as the car panel unit 21, and only the difference in the thickness of the plate material exists, so the structure thereof is not shown in detail. Similarly, the door panel 51 has the characteristics of light weight and the like of the compartment panel 22. And the door frame 52 is made of steel, and the left and right side beams are welded, so that the strength of the door frame 52 can be increased.
In this embodiment, the frame 64 is formed by connecting a plurality of vertically staggered aluminum flat tubes 641 and an i-beam 642, so that the overall weight of the upper floor assembly 6 can be effectively reduced.
In summary, this embodiment is through selecting for the body structure part aluminium alloy materials to adopt reasonable body structure to arrange, on the basis of reducing the automobile body weight, can guarantee the structural strength of automobile body simultaneously, and realize the vehicle volume maximize through jacking upper strata bottom plate assembly to the highest point, thereby realize that the sedan-chair fortune car is at the freight of returning journey in-process as much as possible, reduce cost of transportation, improve the transportation benefit of vehicle, increase profit.
Further, the jacking mechanism adopted in this embodiment includes hydraulic cylinders 8 respectively located at left and right sides of the front end connection assembly 11, the middle connection assembly 12 and the suspension fixing beam assembly 13, as shown in fig. 1, so that the upper floor assembly 6 is jacked up by respectively bearing force, wherein the hydraulic cylinders in the middle connection assembly 12 and the suspension fixing beam assembly 12 are arranged in the upright post 23 (only the hydraulic cylinders 8 which are not arranged in the upright post 23 are shown in the figure, and the hydraulic cylinders 8 which are arranged in the upright post 23 are not shown because of being shielded), so that the expansion and the regularity of the rear space in the carriage are facilitated.
Further, the upright post 23 adopted in the embodiment is formed by bending and welding steel plates, meets the fixing requirement of the hydraulic cylinder 8 in the upright post 23, and is welded with the frame side beam into a whole to improve the strength of the whole vehicle frame.
Further, the middle part of the right carriage plate assembly 3 adopted in this embodiment is provided with a split door 31, as shown in fig. 12, the design benefit of this structure is that: 1. the visual field of vehicle operators can be widened when the car is assembled and disassembled, the operation is convenient, and the assembling and disassembling efficiency is improved. 2. When other cargoes are transported in the return stroke, the efficiency of loading and unloading cargoes is improved by opening the side door, the time is saved, and the cost is reduced.
Further, the thickness of the carriage plate unit 21 employed in the present embodiment is 20mm.
Further, the thickness of the door panel unit adopted in this embodiment is 30mm, which is slightly higher than the thickness of the carriage plate unit 21.
Further, in the present embodiment, the hollow channels 213 of the carriage plate unit 21 and the door plate unit are provided with reinforcing ribs (not shown in the figure), so that the carriage plate 22 is not easy to deform due to the stress during the transportation of bulk cargo.
Further, in this embodiment, the two sides of the upright post 23 are provided with grooves 231; after the carriage plate 22 is inserted into the groove 231, the carriage plate is connected and fixed with the upright 23 through a fastener 232, as shown in fig. 13.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (4)
1. The utility model provides an aluminum alloy totally enclosed vehicle transportation semitrailer, includes frame assembly, left side railway carriage or compartment board assembly, right side railway carriage or compartment board assembly, qianmen assembly, back door assembly, upper strata bottom plate assembly and suspension assembly, its characterized in that: the frame assembly comprises a front end connecting assembly, a middle connecting assembly and a suspension fixing beam assembly which are arranged from front to back;
the left side and the right side of the front end connecting assembly, the middle connecting assembly and the suspension fixing beam assembly are respectively provided with an edge beam; the side beams are formed by connecting an aluminum side beam on the outer side and a steel side beam on the inner side, and a plurality of cross beams are vertically connected between the two side beams; the bottoms of the front end connecting assembly, the middle connecting assembly and the suspension fixing beam assembly are respectively provided with a plurality of local cross beams, local longitudinal beams and fixing beams which are made of aluminum alloy materials;
the left carriage plate assembly and the right carriage plate assembly comprise carriage plates assembled by carriage plate units in a clamping way and upright posts fixedly connected with the adjacent carriage plates; the carriage plate unit is an aluminum profile formed by one-time extrusion and comprises a clamping joint at the head and the tail, a clamping groove and a hollow channel therebetween;
the front door assembly and the rear door assembly comprise door plates assembled by the door plate units in a clamping mode and door frames for fixing the door plates; the door plate unit is an aluminum profile formed by one-time extrusion, and comprises a clamping joint, a clamping groove and a hollow channel between the clamping joint and the clamping groove, wherein the clamping joint and the clamping groove are all the same as the carriage plate unit; the door frame is made of steel;
the upper-layer bottom plate assembly comprises an upper-layer front bottom plate assembly, an upper-layer rear bottom plate assembly and an upper-layer bottom plate connecting shaft assembly which is connected and arranged between the upper-layer front bottom plate assembly and the upper-layer rear bottom plate assembly; the upper front bottom plate assembly and the upper rear bottom plate assembly comprise frames and panels; the frame is formed by connecting a plurality of vertically staggered aluminum flat pipes and I-beams;
the lifting mechanism is connected and arranged between the upper-layer bottom plate assembly and the frame assembly and can lift the upper-layer bottom plate assembly up and down; the jacking mechanism comprises hydraulic cylinders respectively positioned at the left side and the right side of the front end connecting assembly, the middle connecting assembly and the suspension fixing beam assembly, wherein the hydraulic cylinders in the middle connecting assembly and the suspension fixing beam assembly are arranged in the upright post;
a split door is arranged at the middle part of the right carriage plate assembly; the thickness of the carriage plate unit is 20mm; the thickness of the door panel unit is 30mm.
2. The aluminum alloy fully enclosed vehicle transportation semitrailer of claim 1, wherein: the upright post is formed by bending and welding steel plates, and the bottom and the side beams are welded into a whole.
3. The aluminum alloy fully enclosed vehicle transportation semitrailer of claim 1, wherein: reinforcing ribs are arranged in hollow channels of the carriage plate unit and the door plate unit.
4. The aluminum alloy fully enclosed vehicle transportation semitrailer of claim 1, wherein: grooves are formed in two sides of the upright post; after the carriage plate is inserted into the groove, the carriage plate is fixedly connected with the upright post through a fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810715064.8A CN108545118B (en) | 2018-06-29 | 2018-06-29 | Aluminum alloy totally-enclosed vehicle transportation semitrailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810715064.8A CN108545118B (en) | 2018-06-29 | 2018-06-29 | Aluminum alloy totally-enclosed vehicle transportation semitrailer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108545118A CN108545118A (en) | 2018-09-18 |
| CN108545118B true CN108545118B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810715064.8A Active CN108545118B (en) | 2018-06-29 | 2018-06-29 | Aluminum alloy totally-enclosed vehicle transportation semitrailer |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112238904A (en) * | 2019-07-16 | 2021-01-19 | 晟通科技集团有限公司 | Compartment floor |
| CN112298368A (en) * | 2019-07-28 | 2021-02-02 | 晟通科技集团有限公司 | Van-type semi-trailer |
| CN111267712A (en) * | 2020-02-24 | 2020-06-12 | 中铝材料应用研究院有限公司 | Refrigerator car |
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| CN103569201A (en) * | 2012-08-07 | 2014-02-12 | 哈尔滨隆大正新物流设备有限公司 | Wholly-disassembled type general chassis using air suspension assembly monomer wide tires of trailer or semitrailer |
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| CN107738692A (en) * | 2017-11-14 | 2018-02-27 | 辽宁忠旺特种车辆制造有限公司 | The section bar side bar and its vehicle frame of a kind of aluminium alloy side curtain semitrailer |
| CN208439324U (en) * | 2018-06-29 | 2019-01-29 | 辽宁忠旺特种车辆制造有限公司 | A kind of aluminium alloy totally enclosed type half-trailer for vehicle transport |
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2018
- 2018-06-29 CN CN201810715064.8A patent/CN108545118B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103569201A (en) * | 2012-08-07 | 2014-02-12 | 哈尔滨隆大正新物流设备有限公司 | Wholly-disassembled type general chassis using air suspension assembly monomer wide tires of trailer or semitrailer |
| CN204296895U (en) * | 2014-10-15 | 2015-04-29 | 广东信源物流设备有限公司 | A kind of aluminium alloy structure weight-saving semi-mounted stream carrier vehicle |
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| CN108545118A (en) | 2018-09-18 |
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