What Is a Water Crane?

For firefighting, in cold areas of the north, when fire trucks are replenishing water during the fire suppression process, in order to effectively complete the fire extinguishing task, fire water supply equipment is required-fire cranes can be operated by special fire tools in various weather conditions For fast water supply.

For firefighting, in cold areas of the north, when fire trucks are replenishing water during the fire suppression process, in order to effectively complete the fire extinguishing task, fire water supply equipment is required-fire cranes can be operated by special fire tools in various weather conditions For fast water supply. The upper part of the horizontal water pipe can bend the front end of the pipe from left to right and bend down like a crane's head. ^[1]

According to the requirements of the fire department, the technical requirements for fire cranes are as follows:

1. Fire-fighting cranes for fire-fighting (operated by special tools), beautiful, compact, and easy to operate;

2. Fire water cranes have good anti-freezing performance. According to China's specific conditions, the general requirements are between minus 50C and minus 50C.

3 The water outlet of the fire crane can swing 0 to 100 degrees, and can also extend and contract 0 to 300 mm;

4 The height of the water outlet of the fire crane is 3150 3500mm from the ground;

5. Water refueling speed of fire crane is not less than 0.6 m3 / min;

6. Under the nominal pressure, the fire fighting water crane must not leak at the connection part and the residual water discharge device.

According to the analysis of technical requirements, the function of fire water cranes can be defined as: "fire water supply water", according to

Therefore, it can be further decomposed into functions such as steering, telescoping, opening water supply, closing water supply, and quick draining. Analyzing the above functional requirements, steering and telescopic functions are relatively easy to implement in engineering, and they are independent sub-functions that can be implemented by two mechanisms. Water supply, closed water supply, and fast draining need to be prominent in operation, fast and easy to operate, and have antifreeze characteristics. Therefore, when looking for a structural carrier to achieve these functions, it must be considered uniformly, which means that the realization of these functions is best achieved through a Mechanism to operate, so as to make the fire crane simple and compact. To sum up, we can divide the structure of the fire water crane into six parts, namely: the shell part, the water supply channel part, the steering, telescopic part, the switch water supply, the fast drain part, the connection part with the water pipe, and the foundation part.

From the above analysis, we can know that the key mechanisms of fire water cranes are water supply, rapid drainage, steering and telescopic.