Ultra-Safe Mobile Machines

written by Gabi Olpp on 26.10.2018

Maximum safety and environmental friendliness are the challenges facing mobile machines today

Safety valves are a small, but essential, part of a machine. When people work at extremely high heights, such as on telescopic work platforms, operator baskets must be positioned at great heights with the utmost safety. These crucial safety valves have become indispensable in the working world.

What do safety valves do?

Safety valves perform three important basic functions:

  • Hold the load in position
  • Control the load
  • Secure the load

Scroll through our interactive story

Or read about it in detail here:

Hold the load

 
Safely in position

Aerial work platforms are used for positioning loads in hard-to-reach locations. Workers must be able to stop their load at a certain position and then keep it stationary over a long period of time.

In the load-holding function, leak-free pilot-operated check valves prevent unwanted, and therefore dangerous, movements of the cylinder. Keeping the worker in a steady position would be impossible if the boom or the stabilizer cylinders continuously drop. Operators would become inefficient at their work if they had to constantly readjust. Thanks to ultra-low leakage, the seat design of the valve poppet in a load-holding valve limits the potential for movement to almost zero, giving workers the confidence that they can finish the job without the boom drifting.

In this area, Bucher Hydraulics offers solutions with pilot-operated check valves:
Load-holding function

Control the load

Responsive and precise positioning

Mobile cranes have to meet stringent and technically complex requirements. Take for example positioning the rotor blades during the assembly of a wind turbine. Preventing any instability in the load is essential.

A correctly designed load-holding valve makes an all-important contribution to preventing this problem. The load-control function stops the cylinders or winches from overrunning. If an important component like the load-holding valve is missing from the system, or if it malfunctions, the result can be uncontrolled cylinder movements or cavitation of the winch hydraulic motor.

One thing is certain: When lowering a load, the operator must always be able to keep complete control of the machine.

In this area, Bucher Hydraulics offers solutions with load-control valves:

Load control function

Secure the load

Absolute safety

In earthmoving work, the soil is often exposed to extreme and constantly changing operating conditions. These mobile machines must not be affected by this and have to deliver the highest productivity levels under every operating condition in a consistent, efficient and safe way. If a problem nevertheless would occur, the first priority is the safety of workers on the ground and excavator drivers.

In trench work, for example, the load-securing function prevents the excavator arm from lowering uncontrollably in the event of a hose burst. Due to sunlight exposure or mechanical damage, hose assemblies have a limited service life and may burst without warning.

In this case, the pipe-rupture valve holds the cylinder securely in position and prevents dangerous loads from falling down without any control.

In this area, Bucher Hydraulics offers the following solutions with pipe-rupture valves:

Load-securing function

Share

 
 

Follow us