Magnetic Clamp with Adjustable Friction Base for Concrete Slab Positioning
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Solution Overview
Problem
Magnetic clamps used in pre-casting concrete slabs face difficulties in adjusting position due to high clamping force and weight, making precise placement challenging.
Innovation Solution
An adjustable magnetic clamp with a friction reducing arrangement featuring retractable pins and a spring-based urging mechanism, allowing for reduced contact area for easier maneuvering and increased contact area for secure clamping, enabling precise positioning and adjustment of sideforms on a steel bed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the magnetic clamp exerts a large clamping force to secure the sideform, then the clamping reliability is improved, but the ease of adjusting the position of the magnetic clamp deteriorates
Solution Approach 1:
The magnetic clamp incorporates a controllable magnetic attraction mechanism that allows the clamping force to be dynamically adjusted. The magnetic attraction can be controlled to exceed a predetermined magnitude for secure clamping, yet remains adjustable for position correction, resolving the contradiction between reliable clamping and ease of positioning adjustment
2Force
If the magnetic clamp is made heavy to increase clamping force, then the clamping force is improved, but the ease of adjusting the position of the magnetic clamp deteriorates
Solution Approach 1:
Rather than relying solely on increased weight for clamping force, the invention uses a controllable magnetic attraction mechanism that can generate substantial clamping force on demand. This dynamic magnetic force can be adjusted to provide sufficient clamping while allowing for position adjustments when needed, avoiding the drawback of excessive permanent weight
3Stability of the object's composition
If the area of contact between the base and work surface is increased for stability, then the stability is improved, but the ease of maneuvering the magnetic clamp deteriorates
Solution Approach 1:
The magnetic clamp incorporates a movable friction reducing arrangement that can dynamically adjust the contact area with the work surface. When maneuvering is needed, the friction reducing arrangement decreases contact area for easier movement. When stability is required, the arrangement increases contact area, resolving the contradiction between stability and ease of maneuvering
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
Facilitates easier and more accurate positioning of sideforms during concrete slab fabrication, allowing for enhanced manufacturing tolerances and secure clamping without excessive force or weight-related difficulties.
Implementation Method 1
an operating member arranged on the housing for displacing the magnet relative to the housing between an active state in which the magnet exerts a clamping force for clamping the housing to the work surface
Implementation Method 2
An urging means may be associated with each friction reducing element to urge the friction reducing element to its extended position. Each urging means may be in the form of a spring, and more particularly, a coil spring
Data Source
AI summary
A magnetic clamp has a housing, the housing defining a base for resting on a work surface. An adjustable friction reducing arrangement is associated with the base of the housing. The friction reducing arrangement is movable relative to the base between a first position in which the friction reducing arrangement reduces an area of contact between the base of the housing and the work surface and a second position in which the area of contact between the base of the housing and the work surface is increased.