Flood Relief Three Thousand Question Q: Why can't engineering machinery equipment replace manpower sandbags?

The flood-resisting terrain is classified in engineering as complex terrain. As to what kind of special equipment to go in is not the main difficulty, the difficulty is how to go in.

There are four major categories of mobile chassis technology for special road conditions:

1 wheeled off-road

Unimog, the Daben family, which is commonly used in international disaster relief, is considered to be the ultimate in the traditional all-wheel-drive wheeled chassis ( Unimog is the name of the " Universal Motor Geraumlt " in German - "General-purpose self-propelled equipment") . Including Wuhan dragons, Dong Feng warriors, these are basically wheeled off-road chassis, wading depth of less than one meter five (usually need to add a dedicated wading device), a slope of less than 45 ° is a common functional level.

However, when the wheeled chassis is under flood rescue, the ground pressure is too high, which is not rigid or soft. The fundamental problem of slipping and subsidence of the mud is not solved, and the complexity of the road surface is still low (for example, the slope gap is less than half of the track length. The time is basically abolished, so it can be carried on a reliable road, but in extremely complex terrain, it is basically completely abandoned. Therefore, although the research direction of the wheeled chassis is now extended to the center, reversed or waterway dual purpose, but the fight against the muddy land can not save others, they first got into it.

2 , track chassis

The tracked chassis has markedly increased resistance to sandy and muddy ground, but it is too destructive to the ground. Moreover, the international all-terrain transport vehicles are basically designed to respond to the same terrain environment and respond to multiple types of terrain. And the biggest problem is - too slow.

In an extremely complex land surface environment, the crawler-type chassis has a slow passing speed and causes too great destructiveness, even causing secondary damage and damage. This is why the track-type chassis emerged with a particularly small number of times when fighting floods. Of course, if you don’t say that the crawler chassis is small, I’m not denying it, but the premise of our discussion is whether it is flood-fighting or disaster relief:

3 , wheel composite chassis:

In fact, the wheel-type composite chassis is not too late: But now the combined wheel type, most of the tires are no longer used, or that the radius of the turn is already enough to deter people, but also both the shortcomings, not the law dry. A major trend now is to use tracks as wheeled or variable tracks. Another trend is to make track and wheel chassis replaceable.

4 , foot chassis

Due to the comparison of a large number of chassis models in the front, or the most reliable people, the bionic technology began to do more research in the chassis technology. Of course, the practicality of the biped's bionic chassis is particularly poor, and there are more four-legged and many-legged.

  However, there is a difficult problem with multiple confrontations: there are too many changes in the environment. Therefore, if many multi-foot chassis cannot be pre-modeled, the response to the remote control environment is the best solution.

The so-called helicopter airdrop technology is not only limited by the weather and meteorological issues, it cannot cope with all weather conditions, and it cannot guarantee the accuracy of throwing in the case of insufficient visibility.

It is certainly not advisable to have an office that is worthless.

The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network.