Insulating Lifting Table Sloped Surface for Electric Shock Prevention
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Solution Overview
Problem
The risk of electric shock to technicians working on high-voltage two-wheelers during maintenance is high due to the conductive nature of lifting tables when liquids such as rain, snow, or leaks from the vehicles come into contact with the metal stands or wheel vices, potentially causing short-circuits.
Innovation Solution
A lifting table with a table top made of electrically insulating material, featuring a sloping surface design with fluid collection zones and an electrical grounding conductor, along with a pneumatic actuator to prevent fluid runoff and ensure safety by grounding the collection area, reducing the risk of electric shock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal stand or wheel vice is used to hold the two-wheeler on the lifting table, then the machine can be securely held during maintenance, but the risk of electric shock to the technician increases due to conductivity when liquids are present
Solution Approach 1:
The patent introduces an electrically insulating material as an intermediary between the metal stand/wheel vice and the lifting table surface. This insulating layer (such as rubber or plastic coating) allows the metal components to maintain their mechanical holding function while preventing electrical contact with the table surface when liquids are present, thus resolving the contradiction between secure holding and electric shock risk
2Object-affected harmful factors
If the lifting table surface is made of electrically insulating material, then the risk of electric shock is reduced, but the ability to collect and channel fluids away from the operator is compromised due to lack of drainage pathways
Solution Approach 1:
The patent incorporates drainage channels and grooves that create three-dimensional pathways on the otherwise flat insulating table surface. These channels elevate and direct fluid flow along predetermined paths away from the operator's position, adding a dimensional element to the two-dimensional insulating surface to simultaneously achieve both electrical insulation and effective fluid management
3Object-affected harmful factors
If the table top is made entirely of electrically insulating material, then electric shock risk is minimized, but the structural strength and durability may be reduced compared to metal surfaces
Solution Approach 1:
The patent employs composite material construction for the lifting table, combining electrically insulating materials (such as fiberglass-reinforced plastic or composite panels with embedded insulation layers) that provide both the required electrical insulation properties and adequate structural strength to support heavy two-wheelers during maintenance operations
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively channels fluids away from the operator and grounds the collection area, significantly reducing the risk of electric shock during maintenance operations on high-voltage two-wheelers, enhancing safety and operational reliability.
Implementation Method 1
The production of a tray with a sloping top face over at least part of its surface makes it possible to channel the fluid present on the table top towards a chosen collection zone remote from the operator. This collection zone is thus capable of allowing the collection of at least part of the runoff fluid coming from the machine and moving by gravity on the surface of said table top.
Implementation Method 2
the or at least one of the collection zones is equipped with an electrical grounding conductor able to allow said collection zone to be grounded. This results in additional safety in terms of reducing the risk of electric shock.
Data Source
Figure 1
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AI summary
The invention relates to a lifting table (1) for the repair and maintenance of rolling stock, particularly two-wheeled vehicles, said table (1) comprising a tabletop (2) made of electrically insulating material with two opposing transverse edges and two opposing longitudinal edges, and a drive device (5) for raising and lowering said tabletop (2). The tabletop (2) is provided, on the side (21) facing the receiving surface of the vehicle, at each of its longitudinal edges (4) with a lip (6) and has at least a portion of its face (21) facing the receiving surface of the vehicle inclined towards at least one fluid collection zone (7) formed on the surface of the tabletop (2).