Recently, on its way to the market, the merchant state occasionally encountered a “4 x 2 tractor + 2 axial bone frame + 110 cubic wagon” express transporter, but looked closely at the fuel tank on both sides of the shelf, rather than the battery tank. It turns out to be a recently introduced 513kwh 4x2 electric weight card for a given brand. What are the technical differences between the current 6x4 weight cards on the market? Are 4x2 electrodynamic weights stuck in express transport competitively
01
Structural differences in 4x2 electric weight cards
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Many believe that the 6x4 and 4x2 vehicles are structurally short of a driving bridge, with no difference. This may be true for traditional energy weight cards, but there are significant differences between them in the area of electric weight cards。
The current 6x4 electric weight card is followed by a back cell with a maximum power of 600 kwh and a battery box weighing around 4. 6 tons. The front axle of diesel tractors is approximately 3 tons, mainly engines + gearboxes (1. 4 tons) and cabs (0. 7 tons), so that the front bridge transecting panel springs require only one or two pieces to enhance the driver's deviance performance. Because of the small amount of the front axle of the bridge, the steering wheel, which is held to very low voltage, can be manipulated to a high level; and the 6x4 electric weight card, which matches the 600 kwh back battery tank, has a front axle of about 6 tons, of which 600 kwh battery box (4. 6 tons), the cab (0. 7 tons) and the electrical control equipment (0. 4 tons). At this time, the pre-bridge transecting panel spring required three pieces, and the driver's deviation was reduced. In addition, following the increase in the front axle of the bridge, the steering wheel will increase and control performance will decrease relatively。
The use of battery bottom placement will help to reduce the weight of the whole vehicle
According to the above analysis, 4x2 electric weight cards are not suitable to match back 600kwh battery boxes, but require bottom battery setting, with the weight of the battery boxes distributed by the front and back bridges, with the front axle bearing around 4 tons, matching the two transected panel springs to meet the carrying capacity and the vibration ability. Since bottom batteries occupy the space of the original total power and transfer axis, the driver programme can only use electrically driven bridges. It follows that the best placement option for 4x2 electric weight cards is “bottom battery + electric bridge”。
4x2 electric weight cards are electrically driven by a bridge
02
Use scene differences
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Currently, 6x4 electric weight cards are mainly used for resource-type transportation and for the transportation of materials, such as coal, sandstone, steel, etc., some 300 km away, and are based on “ton kilometres” of freight. The type of transport vehicle is: 6x4 tractor + 3-axis semi-mounted, with a total weight of 49 tons. In contrast to traditional energy weight cards, the current weight of 400 kwh is around 10. 2 tons, a deficit of approximately 2. 4 tons for diesel weight cards and 1. 6 tons for lng weight cards, with gross revenues of 5 per cent - 7. 5 per cent below those for traditional energy vehicles, which is the main shortfall in the 6x4 electro-heavy weight trucking resource category。
6x4 electric power of 400, 500, 600 kwh in turn heavy cut
It is clear that 4x2 electric weight cards are not suitable for short transport of resources and materials and are more suitable for express transport of about 1,000 kilometres, with transport vehicles of the following types: 4x2 tractors + 2 axial skeletal vehicles + 110 cubic cars, with a total weight of 36 tons. According to previous data, 110 cubic courier cargo weighs about 12 tons. The 4x2 electric tractor weighs 10. 5 tons, the 2-axis skeleton weighs 4. 5 tons and the 110 cubic wagon weighs 4 tons, while the total weight of the train is 31 tons. Express freight is calculated as “cubic kilometres” or “kilometres”, so there is no problem of a loss of tons of 4x2-wheel-carrying, and its gross revenues are largely consistent with traditional energy weight cards。
03
Tco advantage for express transport
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The express delivery market has now entered a serious internalization era, and the cycle of external bidding by major courier companies has been reduced from one year to six months, or even a quarter. Transport prices fell by about 2 per cent after each tender, making it urgent for third-party carriers to reduce transport costs。
Truck, 4x2 diesel tractor + 2 axle skeleton + 110 cubic freighter
For example, the merchant state uses a delivery route from chengdu to changsha 1150 km with a time limit of 18 hours. As the total weight of the train is around 31 tons, when the vehicle is travelling at 89km/h, electric tractor power is at 1. 1 kwh/kwh and electricity is at $1139, based on an average electricity price of $0. 9/kwh; fuel is at $1656, based on the price of diesel fuel at 24l/100 km. In addition, in order to encourage the development of new energy weight cards, some regions have introduced a high-speed rate discount of 80 per cent for new energy weight cards, which can save $414 based on an average high-speed rate of 1. 8 per km for 4-axis vehicles. On the basis of the above two cost calculations, the single-time cost savings of electric weight cards over fuel weight cards would be $931. Based on 10 trips per month, a total of $18. 6 million was saved。
It is assumed that the purchase price of 600 kwh 4x2 electric weight cards will be $590,000 and the price of 4x2 diesel fuel will be $350,000, leaving a difference of $240,000. A combination of insurance costs and fluctuations in electricity costs would compensate for the procurement gap after 15-18 months of operation of the vehicle。
The greatest disadvantage of 4x2 mvc delivery is its timeliness, requiring multiple stopovers. At the time of the ningde era, 2c batteries have been launched, with a maximum current of 600a for two guns, with 360kw power-charged stakes and double-guns, and soc 15-85 per cent of the battery within 50 minutes, and vehicles can travel 380 km. With the gradual spread of electric weight cards over the last two years, heavy card charging stations along highways are now growing as fast as they are after the rain, so that, as long as we avoid the 0-6 p. M. Hour period, the electric weight cards can be kept on the line and the recharge is no longer a problem. From chengdu to changsha, 1150 km, only two stopovers will be required to pre-empt charge locations and recharge times, so that the electric weight card will meet the express delivery company's time limit。
According to comptroller statistics, the penetration rate of electric weight cards has now reached 30 per cent in some regions, and full access to the 1,000 km express transport market is expected in 2026. With the application of new technologies and products, such as 800kwh 4c batteries and megawatt overcharges, it is expected that in the future electric weight cards will meet the 2000 km express transport demand。
