Sliding-Rail Lifting Clamp With Protected Lever Actuation
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Solution Overview
Problem
Existing lifting clamps are complex and prone to unintentional actuation during operation, making them difficult to use securely and efficiently.
Innovation Solution
A lifting clamp with a structurally simple design featuring a sliding rail, abutment device, and levers positioned to prevent unintentional actuation, allowing one-handed operation and secure lifting and lowering mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lifting clamp uses a complex mechanism to achieve lifting and lowering functions, then the lifting capability is improved, but the device complexity increases and unintentional actuation risk increases
Solution Approach 1:
The lifting clamp is divided into functionally independent modules: a lifting mechanism with pushing device and counter-element, a lowering mechanism with lowering lever, and a release mechanism with release lever. Each module operates independently through its own lever system, allowing the lifting function to be achieved without requiring complex integrated mechanisms that could unintentionally activate multiple functions simultaneously.
Solution Approach 2:
The counter-element acts as an intermediary between the pushing device and the abutment device, providing controlled resistance and preventing unintended activation. The release lever serves as an intermediary mechanism that deliberately disengages the blocking element to allow controlled movement, separating the lifting and lowering functions to prevent accidental activation during operation.
2Ease of operation
If the levers are positioned for easy access and operation, then the ease of operation is improved, but the risk of unintentional actuation increases
Solution Approach 1:
The levers are arranged asymmetrically in terms of their actuation characteristics: the pushing device requires upward pivotal movement, the lowering lever requires downward pivotal movement, and the release lever requires lateral displacement. This asymmetric arrangement allows easy one-handed operation while preventing unintentional actuation, as each lever must be deliberately moved in its specific direction and manner.
Solution Approach 2:
Each lever is designed with dynamic characteristics that require deliberate user input: the pushing device and lowering lever pivot about transverse axes requiring hand grip and rotational force, while the release lever requires lateral displacement to disengage the blocking element. These dynamic requirements ensure that only intentional actions activate the mechanisms, preventing accidental activation during normal operation or transport.
3Adaptability or versatility
If the abutment device is made displaceable on the sliding rail for lifting operation, then the lifting function is improved, but the risk of unintended movement increases
Solution Approach 1:
The blocking element is positioned to preemptively prevent unintended displacement of the abutment device along the sliding rail. During lifting operation, the blocking element maintains engagement with the sliding rail to prevent accidental movement, while the release lever provides controlled disengagement only when deliberate activation occurs. This preliminary blocking action ensures position stability during normal operation.
Solution Approach 2:
The release lever mechanism provides feedback control for the abutment device position: when the blocking element is engaged, it prevents unintended displacement; when the release lever is actuated, it deliberately disengages the blocking element to allow controlled movement. This feedback mechanism ensures that the abutment device remains stable unless intentional action is taken to move it.
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
Enables secure, one-handed operation with reduced risk of unintentional actuation, facilitating efficient and safe lifting and lowering of loads.
Implementation Method 1
a first movement mechanism having a pushing device, having an actuation lever that is seated pivotally on the abutment device, and having a counter-element that is fixedly connected to the abutment device, wherein the actuation lever is coupled to the pushing device and, in the event of a pivotal movement of the actuation lever in a lifting function of the lifting clamp, a spacing between the stand arrangement and the at least one abutment element increases stepwise
Implementation Method 2
a second movement mechanism with a lowering lever, wherein the lowering lever is arranged on the abutment device and, as a result of actuation of the lowering lever in the lifting function, a spacing between the at least one abutment element and the stand arrangement decreases stepwise
Implementation Method 3
a third movement mechanism with a release lever, wherein the release lever is seated on the abutment device and, as a result of actuation of the release lever, blocking of the displaceability of the at least one abutment device on the sliding rail is releasable
Data Source
AI summary
A lifting clamp is provided, comprising a sliding rail, an abutment device that is arranged to be displaceable on the sliding rail, having at least one abutment element for a workpiece, wherein an axis of displacement of the abutment device on the sliding rail is parallel to a direction of spacing between a stand arrangement and the at least one abutment element, a first movement mechanism having a pushing device, having an actuation lever that is coupled to the pushing device to bring about a lifting function of the lifting clamp, a second movement mechanism with a lowering lever to bring about a lowering function, and a third movement mechanism with a release lever for freeing the displaceability of the at least one abutment device on the sliding rail. The lowering lever and/or the release lever is positioned between the actuation lever and the counter-element.