There is a widespread push in North America to replace hydraulic lifting systems with electromechanical systems. This trend has been going on for many years in Europe and is now really taking hold in North America. Many engineers are now tasked with the job of eliminating environmentally unfriendly hydraulic oil with systems that are purely electromechanical.

Figure 1: Screw jacks and lifting systems. Source: DieQuaConsiderations

When making this changeover, several important factors need to be considered to ensure that the new design will work properly, efficiently and reliably over the life of the system. This video from DieQua will walk through the critical engineering factors that need to be considered and will detail the creation of a multi-jack lifting system complete with the performance data, 3D drawings and bill of materials.

Advantages

Screw jack systems offer advantages over hydraulic systems. They are easier to install, accurate and repeatable as opposed to hydraulic systems. The speed can be easily controlled as well. Depending on the pitch of the screw or types of jacks used, they can be self-locking, so there is a safety component advantage to using screw jacks.

Use case

One application example encountered by DieQua was with a company that makes high-end auto lifts. The customer had used hydraulic lifting systems up until that point and wanted to explore electromechanical solutions — in other words, screw jacks. They submitted drawings and a checklist with data for their application. Once all the details were gathered, DieQua calculated the best size screw jack for the customer’s specific needs.

When going through the selection process, there are critical calculations that must be completed to ensure that the right selection is made. The information needed for sizing the gearbox includes the lifting force, the maximum lifting length, the effective lifting stroke, the lifting speed, duty factor, work cycle, the type of jack to be used, the type of input power, brake mechanism (if applicable), operating conditions and, finally, the operational layout.

About DieQua

DieQua is a complete assembly center for these screw jack units, and they can fabricate various components like line shafts and spindles, for example. DieQua offers hinge-mounting as well for screw jacks. These screw jack body units are off the shelf and ready to go. They are cut to length and meet configurations to the specific applications that the jack is going to be used for. DieQua’s time frame is typically two to four weeks during normal workload. For more information, contact DieQua.

Watch the video: https://www.youtube.com/watch?v=r3rZvPXwoSw