Coil Spring Elastic Element Concrete Adhesion
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Solution Overview
Problem
Existing jolting devices for construction machines, particularly slip-form pavers, face issues where concrete additives adhere to the coil springs, causing them to become immobile and lose their elastic qualities, leading to vibration transmission to the machine frame and potential damage.
Innovation Solution
The interspaces between the spring windings of the coil springs are filled or closed using an elastic element, such as rubber or elastomeric material, to prevent concrete adherence and maintain elastic properties, while also providing a removable shaped component and optional outer elastic layer to encase the springs, ensuring effective decoupling and easy disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the fastening means with coil springs is immersed in construction material during operation, then the jolting device can effectively liquefy and condense concrete, but concrete additives adhere to the springs causing them to become immobile and lose elastic qualities
Solution Approach 1:
The patent introduces an elastic element as an intermediary component between the coil spring and the construction material. This elastic element prevents concrete additives from directly contacting and adhering to the spring windings, thereby maintaining spring mobility and elastic qualities while allowing the jolting device to remain immersed in concrete for effective operation
Solution Approach 2:
The patent employs an elastic element that can be configured as a flexible covering or film surrounding the coil spring. This flexible structure allows the spring to maintain its decoupling function while preventing concrete material from penetrating into and adhering to the spring windings, thus preserving the spring's elastic properties over prolonged operational periods
2Duration of action of moving object
If the coil springs are exposed to construction material, then the jolting device can be used during concrete pouring, but the springs eventually become immobile causing vibration transmission to the machine frame
Solution Approach 1:
The elastic element serves as a protective intermediary that enables the coil spring to remain immersed in construction material for extended durations without direct contact between the spring windings and concrete additives. This prevents the spring from becoming immobile and transmitting harmful vibrations to the machine frame while maintaining the decoupling function throughout the operational period
Solution Approach 2:
The patent applies beforehand cushioning by pre-installing the elastic element on the coil spring before immersion in concrete. This protective layer is in place prior to contact with construction material, preventing adhesive contamination from occurring in the first place and ensuring the spring maintains its elastic qualities throughout the entire operational duration
3Device complexity
If the springs are not protected, then the device structure remains simple, but concrete granules adhere between spring windings causing elastic qualities to deteriorate
Solution Approach 1:
The elastic element is introduced as a relatively simple intermediary component that can be configured as a basic covering or film around the coil spring. This adds minimal structural complexity while effectively preventing concrete granules from adhering between spring windings, thereby maintaining the spring's decoupling effect and reliability without significantly complicating the fastening means structure
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
This solution maintains the elastic qualities of the jolting device, prevents vibration transmission to the machine frame, and extends the useful life of the device by preventing concrete adherence and potential damage, ensuring continued effective operation even when immersed in construction material.
Implementation Method 1
the elastic qualities of the at least one coil spring are, together with those of the elastic element, adapted to the vibration of the vibration generator
Implementation Method 2
the fastening means being provided with at least one spring, particularly a coil spring which largely or fully prevents the transmission of vibrations of the vibration generator to the construction machine
Data Source
AI summary
In a jolting device (1) for a construction machine, particularly for a slip-form paver, comprising a housing (18), a vibration generator (19) arranged in the housing (18), and a fastening means (10) including at least one coil spring (8) having a plurality of spring windings, with said fastening means (10) being operative for fastening the housing (18) to the construction machine, it is provided that the interspaces between the spring windings of said at least one coil spring (8) are closed or at least partially filled towards the interior by an elastic element (22).