Circular broom and related fixing device
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Solution Overview
Problem
Existing circular broom attachment systems for sweeping machines require complex alignment and tool-assisted replacement, leading to inefficiencies in handling and production costs.
Innovation Solution
A positive-locking structure on the outer circumference of the disc broom allows for torque transmission and secure attachment to the carrier in any orientation, eliminating the need for axial bolts and enabling the use of lightweight, cost-effective materials, with a quick-change system that includes a radially extending holder and pivoting retaining bracket for tool-free replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If axial bolts and through-holes are used for torque transmission, then secure attachment is achieved, but alignment complexity and replacement time increase
Solution Approach 1:
The attachment system is segmented into a modular quick-change mechanism consisting of a carrier with receptacle, a disc broom with plate body, and a retaining bracket. This segmentation allows the disc broom to be quickly detached and replaced without complex alignment of multiple bolts and holes, while the retaining bracket ensures secure attachment during operation.
Solution Approach 2:
The retaining bracket is designed to pivot between an open position for quick insertion/removal and a closed position for secure attachment. This dynamic mechanism enables rapid replacement while maintaining reliable torque transmission during sweeping operations, resolving the contradiction between speed and security.
2Reliability
If traditional bolt-based attachment systems are used, then torque transmission is reliable, but device complexity and manufacturing costs increase
Solution Approach 1:
The invention extracts and eliminates the complex alignment requirements of traditional bolt-and-hole systems. The positive-locking structure on the outer circumference of the plate body engages with the receptacle to provide reliable torque transmission without requiring multiple axially aligned bolts and through-holes, thereby reducing device complexity.
Solution Approach 2:
The attachment function and torque transmission function are merged into a single integrated quick-change mechanism. The retaining bracket simultaneously secures the disc broom axially and enables torque transmission through the positive-locking structure, eliminating the need for separate bolt alignment and securing operations.
3Reliability
If precise axial alignment of bolts and holes is required, then secure attachment is achieved, but ease of operation and replacement simplicity deteriorate
Solution Approach 1:
The plate body features an asymmetric positive-locking structure on its outer circumference that engages with the receptacle. This asymmetric design provides rotational invariance, allowing the disc broom to be attached in any rotational orientation without requiring precise axial alignment of multiple features, greatly simplifying the replacement operation while maintaining secure attachment.
4Reliability
If multiple screw bolts and socket pins are used for detachable arrangement, then torque transmission is ensured, but ease of manufacture and production cost effectiveness worsen
Solution Approach 1:
The disc broom is designed as a disposable wearing part with a simple plate body structure that can be quickly replaced. The positive-locking structure and quick-change mechanism enable rapid replacement without expensive fastening hardware, reducing manufacturing costs while ensuring reliable torque transmission during the service life of the disc broom.
Data Source
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AI summary
The present invention relates to a circular broom for interchangeable arrangement on a carrier (12; 112) that can be rotatably arranged on a sweeping or cleaning machine, with a disc-shaped plate body (22) for a torque-transmitting attachment to the carrier (12; 112), the plate body (22 ) on its outer circumference (24), at least in sections, has a form-fitting structure (26; 36; 46; 56; 66; 76) for forming a torque-transmitting connection between the carrier (12; 112) and plate body (22). Furthermore, the invention relates to a fastening device provided for this purpose for the rotatable arrangement of the circular broom on a sweeping or cleaning machine.