Name: Iguana wheeled bridge car.
Production unit: Mann Company, Krupp Co., Ltd. ..
Status: Production.
Equipment: Norway.
abstract
The car was jointly developed by Krupp GmbH, GmbH and Lor for nearly two years. In the process of development, the experience of bridge development in other countries is used for reference, and ready-made parts are used as much as possible.
It is small and agile, and can pass through any terrain in the Federal Republic of Germany. The shaft body is low, which can fully bridge in the shortest time, and the bridge can be closed on both sides of obstacles.
The advantages of this kind of vehicle are large span-up to 26m-and small self-weight, but the load capacity is 60t, which can carry the heaviest combat vehicle.
At the beginning of 1987, MAN signed a contract with the Norwegian Ministry of Defence to provide 14 such bridge cars and 14 additional bridge bodies or 12 additional bridge bodies, with a total contract value of 12 DM. The car has been equipped with Norwegian troops.
design feature
The vehicle consists of three parts: the carrier vehicle, the erection mechanism and the bridge body.
1. vector
This is a VFA 8×8 wheeled off-road vehicle produced by MAN and Austrian Automobile Factory (OAF). In view of the fact that the crossing point is generally close to the expressway, the off-road performance of vehicles is only required at the crossing point. Therefore, the prototype car has no armor protection, and the manufacturer plans to install armor in the cab in the future, so that the vehicle can have certain protection in the frontier area, especially to deal with the threat of mines.
The reinforced chassis supports 1 movable frames, which can move along the length of the chassis and bear all the bridging mechanisms.
2. Bridging mechanism
It consists of an upright arm, a supporting arm and an auxiliary arm. The erection arm is located at the rear end of the mobile frame, and the bridge body moves longitudinally with the help of 1 guide roller and gear transmission device.
The supporting arm is located at the front end and used for supporting the upper half of the bridge body; The auxiliary arm supports the upper half of the bridge body at the rear end. Only two passengers can supervise and bridge automatically. The bridging process is as follows: the vehicle travels backwards to the river bank until the end of the moving frame is about 7.5m away from the edge of the river bank.
After the upper part of the bridge body rises, it hangs in front of the rotating support arm, the lower part of the bridge body moves forward, and then the slope decreases 10%. At the front, the bridge is supported by the rotating arm, and at the back, the bridge is supported by the auxiliary arm. After that, the auxiliary arm descended, which disturbed the two halves of the bridge. Then, the axle body moves backward until its center of gravity is higher than the two rear axles of the carrying vehicle.
At this time, the moving frame extends from below the bridge body and the hydraulic support arm descends. The bridge moved forward completely and crossed the ditch until the end of the springboard reached the other side. The erection arm is retracted from the bridge body, and the end of the erection arm is placed near the shore. The whole bypass process takes about 8 minutes.
3. Bridge body
Made of standard civil aluminum alloy A 1Zn4.5Mg 1, allowing 60-ton vehicles to pass through. It consists of four special frog trusses, with a length of 13m and a width of 2m, each weighing 2.5t The truss beam members are wedge-shaped and stacked on the top of the vehicle when marching. Liang Kuan1.555m for each truss, with an inclination of 3.6 degrees.
operating characteristic
Two passengers, 88 driving modes, 25000kg vehicle weight, about 10000kg bridge body, a total of about 36000kg bridge, total length 12.73m, total width 4.0 1m, no bridge 3. 1m, and total height 3.99.
The height from the ground under the vehicle is 0.4m, the wheelbase 1.5+3.225+ 1.45(m) approach angle/departure angle is 2025, the top speed of the expressway is 73km/h, the journey is 600~700km, the fuel reserve is 400L, and the maximum slope is1.
Transfer case model G080 1, 2-speed, steering device model/type ZF 8046/ circulating ball nut, steering radius 165m, suspension device type: front half elliptical plate spring and incremental loading hollow rubber spring and stabilizer, rear half elliptical spring and stabilizer.
Brakes: dual-loop air braking of main brake, mechanical braking of rear wheels of parking brake, engine exhaust braking, air control of engine exhaust, tire size 16.00×20, tire number 8+ 1 (standby), electrical system voltage 24V, number/voltage/capacity of two batteries 2VI73Ah (each), double-track bridge structure.
Self-weight is 60/70 tons, bridge length is 26m, bridge width is 4.02m, each truss beam 1.55m, bridge center 1. 1m, springboard tip is 0.075m, bridging time is 8min, and there are 2 operators.