Building Cleaning Rope Fixing Device with Reinforcing Bar Anchors
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Solution Overview
Problem
Existing devices for fixing ropes for building cleaning are not stably fixed to the wall due to losses of wires tied to auxiliary reinforcing bars and escape of concrete under building aging, leading to safety concerns for workers.
Innovation Solution
A device for fixing a rope that allows a loop fastener to be directly fitted to a reinforcing bar, with side plate-reinforcing portions to prevent deformation under concrete pressure, and a case bracket connected to the reinforcing bar for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device is supported only against the fixing piece tied to the auxiliary reinforcing bar, then the device can be installed in the wall, but the device is not stably fixed to the wall due to losses of wires and escape of concrete under building aging
Solution Approach 1:
The device is divided into multiple independent fixation components: a fixing piece with a first fixing portion that engages with the auxiliary reinforcing bar, and a case bracket with a second fixing portion that engages with the main reinforcing bar. This segmentation allows each component to perform its specific fixation function independently, improving overall stability without requiring a single complex structure.
Solution Approach 2:
The fixing piece and case bracket are merged into a single integrated device body, where the fixing piece is fixed to the case bracket. This merging allows the device to utilize both the auxiliary reinforcing bar and main reinforcing bar for simultaneous fixation, enhancing stability while maintaining a unified structure that is easier to install and maintain.
2Ease of manufacture
If the body is molded to a relatively thin metal plate, then the device is easy to manufacture, but the sides of the body are concavely deformed under concrete pouring pressure and expansion pressure
Solution Approach 1:
The device incorporates local reinforcement features at critical locations: the fixing piece has a first fixing portion with enhanced structural strength to engage with the auxiliary reinforcing bar, and the case bracket has a second fixing portion to engage with the main reinforcing bar. These localized strengthening elements prevent concave deformation under concrete pressure while maintaining the overall thin plate design for ease of manufacture.
3Reliability
If the rope loop is forcedly pulled out to lock the rope, then the rope can be secured, but the body may be damaged or broken
Solution Approach 1:
The device employs a self-locking mechanism where the fixing piece and case bracket automatically secure the rope loop in place through their engagement with the reinforcing bars. The fixing portions are designed to maintain constant contact with the rope loop, providing continuous locking without requiring forceful pulling operations that could damage the body structure.
Data Source
AI summary
The present disclosure relates to a device for fixing a rope for building cleaning, including: a body case having a loop-receiving portion formed in an open front surface thereof and a fastener-fitting hole formed on an upper portion of the loop-receiving portion; a loop fastener having a loop-fixing plate, a loop-fitting hole formed on one side of the loop-fixing plate, a rope loop rotatably fitted to the loop-fitting hole, and reinforcing bar-fitting holes formed on the other side of the loop-fixing plate in such a way as to pass through the fastener-fitting hole of the body case and allow a reinforcing bar of a building to be inserted into any one thereof; and a case bracket fixed to the underside of the rear surface of the body case in such a way as to be supported against another reinforcing bar of the building.