Modular Sensor Holding Device for Road Pavers
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Solution Overview
Problem
Conventional measurement bar devices for road pavers are heavy, require skilled labor for installation, and have limited adjustability and versatility, making them cumbersome and difficult to use across different road paver types.
Innovation Solution
A modular holding device with swivel arm and carrier arm modules, featuring quick-release clamping devices that apply constant clamping forces, allowing for easy installation and adjustment without tools, and enabling versatile sensor positioning and compatibility with various road paver types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid measurement bar device is used for sensor positioning, then measurement stability is improved, but device weight increases and installation complexity increases
Solution Approach 1:
The measurement bar is divided into multiple telescopic segments that can be extended or retracted independently. This segmentation allows the device to maintain stability when extended for measurement while reducing weight when retracted, resolving the contradiction between measurement stability and device weight.
Solution Approach 2:
The measurement bar transitions from a static rigid structure to a dynamic telescopic structure that can change its length and configuration. This dynamic capability allows the bar to be compact during transport (reducing effective weight impact) and extended during measurement (providing stability), thus resolving the weight-stability contradiction.
2Adaptability or versatility
If a telescopic measurement bar with adjustable sensors is used, then sensor positioning flexibility is improved, but device complexity and installation time increase
Solution Approach 1:
The device is segmented into modular components (telescopic bar segments, sensor modules, clamping devices) that can be independently adjusted and configured. This modularity provides positioning flexibility while keeping individual components simple, reducing overall device complexity.
Solution Approach 2:
The telescopic mechanism provides dynamic adjustability of the bar length and sensor positions without requiring complex fixed adjustment mechanisms. The dynamic extension and retraction capability simplifies the overall structure compared to multiple fixed-position components.
3Adaptability or versatility
If threaded screw joints are used to connect measurement bar segments, then adjustable positioning is improved, but assembly time and labor requirements increase
Solution Approach 1:
The clamping devices are designed to automatically engage and secure the telescopic bar segments when the hydraulic system is activated. The system serves itself by using hydraulic pressure to both extend the bar and secure the segments simultaneously, eliminating the need for manual threading and assembly operations.
Solution Approach 2:
Manual threaded screw joints are replaced with a hydraulic actuation system that uses fluid pressure to both position and secure the bar segments. This substitution replaces complex mechanical assembly operations with a simpler hydraulic control system, reducing assembly time and labor requirements.
4Stability of the object's composition
If a heavy measurement bar device is used, then structural stability is improved, but ease of installation and operation deteriorates
Solution Approach 1:
The measurement bar transitions from a static heavy structure to a dynamic telescopic structure that achieves structural stability only when extended and locked into position. During transport and installation, the retracted configuration minimizes weight impact, while the hydraulic locking mechanism ensures stability during operation, resolving the stability-ease of operation contradiction.
Solution Approach 2:
The hydraulic system automatically provides both the force needed to extend the heavy bar and the locking force to secure it in position. This self-service capability eliminates the need for separate heavy-lifting equipment or multiple operators, making installation and operation easier despite the structural stability requirements.
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 modular holding device simplifies installation, reduces downtime, and ensures secure, ergonomic operation, preventing overstretching or loose connections, while allowing for precise sensor alignment and easy upgrading, thus enhancing usability across diverse applications.
Implementation Method 1
the first and the second clamping device are each formed for a predetermined clamping force when the respective clamping devices are in a closed position
Data Source
AI summary
A road paver includes a paving screed adjustable in height for installing a road surface layer and at least one holding device for carrying and positioning of at least one sensor unit. The holding device has at least one swivel arm module for fastening the holding device on the road paver, at least one carrier arm module and at least one sensor module comprising the sensor unit. The carrier arm module is fastened by a first clamping device on the swivel arm module and the sensor module is fastened by a second clamping device on the carrier arm module, wherein the first and the second clamping device are formed respectively for a predetermined clamping force when the respective clamping devices are in a closed position.