Rack Lifting Apparatus for Data Center IHS
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Solution Overview
Problem
Rack-mounted information handling systems (IHS) are difficult to lift due to their weight and limited space constraints in data centers, which can lead to damage and labor-intensive caster replacement processes.
Innovation Solution
A rack lifting apparatus with pair of rack lifting structures positioned beside opposing lateral sides of the rack, utilizing furniture jacks to lift the rack by engaging a jack engagement surface within a vertical support, allowing weight transfer through top and bottom lateral frame members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a portable crane is used to lift the rack-mounted IHS, then the lifting capability is sufficient, but the overhead clearance is insufficient due to cable trays and air flow containment
Solution Approach 1:
The lifting apparatus transitions from vertical overhead lifting (requiring high ceiling clearance) to horizontal lateral lifting (utilizing side space). The lifting structures attach to the lateral sides of the rack and extend outward horizontally, allowing furniture jacks to lift the rack from the sides rather than from below, thereby avoiding overhead clearance constraints while maintaining full lifting capability for the 2400+ lb rack-mounted IHS
Solution Approach 2:
The lifting apparatus introduces intermediary lifting structures that couple between the rack frame and the furniture jacks. These structures include lifting struts with attachment mechanisms that connect to the rack's lateral frame members, serving as mediators that transfer the lifting force from the jacks to the rack without requiring direct overhead access or modification of the rack structure
2Ease of operation
If the rack is placed on its side to replace casters, then access to casters is improved, but the frame structure and IT gear can be damaged
Solution Approach 1:
The lifting apparatus applies preliminary anti-action by lifting the rack vertically upward before any caster replacement operations begin. This preemptive lifting elevates the rack off the floor, preventing the frame and IT gear from suffering damage that would occur if the rack were placed on its side. The lifting action counteracts the harmful effect of lateral positioning by maintaining the rack in its proper vertical orientation throughout the caster replacement process
3Ease of repair
If the rack is lifted using conventional methods, then the casters can be replaced, but the process is labor-intensive and time-consuming
Solution Approach 1:
The lifting apparatus performs preliminary action by pre-positioning the lifting structures laterally against the rack's side frame members before lifting begins. The feet of the lifting structures are attached to the floor in advance, and the lifting struts are connected to the rack frame, preparing the entire lifting mechanism beforehand. This preliminary setup allows the rack to be quickly elevated and stabilized, enabling rapid caster replacement without the labor-intensive manual handling that would otherwise be required
Solution Approach 2:
The lifting apparatus enables self-service by using the rack's own lateral frame members as attachment points for the lifting structures. The lifting struts connect directly to existing structural elements of the rack, allowing the rack to lift and support itself without requiring external heavy equipment or multiple operators. This self-service mechanism reduces labor requirements and accelerates the caster replacement process
Data Source
AI summary
A rack-mounted information handling system (IHS) includes a rack to mount functional compute components between opposing lateral sides that are being supported by floor supports. A pair of rack lifting structures are each respectively positioned beside a different opposing lateral side of the rack. Each rack lifting structure includes a foot having at least front and rear floor contacting portions. A vertical support includes a lower portion that is coupled to the foot and an upper portion that extends above an adjacent top lateral frame member of the rack. A top member is coupled to the vertical support and presents front and rear attachment components to engage the adjacent top lateral frame member. A jack engagement surface is defined within the vertical support to receive one or more furniture jacks that can be used to lift the pair of rack lifting structures and the attached rack-mounted IHS.