Rotatable Sewer Repair Head for Precise Channel Wall Bonding
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Solution Overview
Problem
Existing sewer processing devices face challenges in achieving precise positioning and reliable repair of sewer sections due to limitations in their ability to adapt to varying sewer geometries and apply materials effectively.
Innovation Solution
The sewer processing device features a rotatable and movable processing unit with articulated holding plates, supported by guides and actuators, allowing for precise alignment and application of covers or welding plates made of thermoplastic materials, which can be heated for bonding, and includes a pneumatically or hydraulically inflatable cushion for even pressure distribution, enabling flexible positioning and secure attachment to the sewer walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a rigid support plate connected to the base body via motor-driven rotating support arms is used to press the cover against the channel wall, then the device can apply force to secure the cover, but the positioning precision and adaptability to varying sewer geometries are limited
Solution Approach 1:
The base body is segmented into multiple articulated retaining plates that can move independently relative to each other. Each retaining plate can be positioned and adjusted separately, allowing precise adaptation to the specific geometry of the sewer section being repaired while maintaining manageable device complexity through modular design
Solution Approach 2:
The retaining plates are made dynamically adjustable through articulation mechanisms that allow movement between fixed and movable states. This enables the device to adapt its configuration to match varying sewer geometries while maintaining secure contact with the channel wall for precise positioning
2Reliability
If multiple actuators are used to apply pressure to the holding device and cover, then the contact pressure can be controlled and equalized, but the device complexity increases
Solution Approach 1:
Sensors are integrated with the actuators to provide feedback on contact pressure levels. This feedback mechanism allows the control system to monitor and equalize pressure distribution across multiple contact points, ensuring reliable and uniform application of the cover to the channel wall without requiring overly complex manual pressure control
Solution Approach 2:
A pneumatically or hydraulically inflatable cushion is used to apply and distribute pressure evenly across the holding device and cover. This fluid-based pressure application system provides reliable, uniform force distribution while simplifying the mechanical complexity compared to multiple rigid actuators
3Adaptability or versatility
If the processing device is designed to handle both circular and egg-shaped sewer profiles, then the adaptability increases, but the device complexity and adjustment requirements increase
Solution Approach 1:
The base body and retaining plates are designed with universal geometric features that can accommodate both circular and egg-shaped sewer profiles. The articulated retaining plates can adjust their orientation and position to match different cross-sectional geometries, providing multi-functional capability without requiring entirely separate devices for different sewer types
Solution Approach 2:
The device incorporates asymmetric adjustment capabilities in the retaining plates that allow them to adapt to the asymmetric geometry of egg-shaped sewers while maintaining compatibility with symmetric circular profiles. This asymmetric design flexibility enables the same device structure to handle varying geometries effectively
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 allows for precise and reliable repair of sewer sections by enabling the processing device to be positioned accurately along the sewer's circumference, applying high-pressure covers or welding plates with adjustable length and shape, ensuring a secure and leak-proof connection, and facilitating efficient processing of both circular and egg-shaped sewer profiles.
Implementation Method 1
Heating wires can be provided in the thermoplastic cover for heating purposes; these wires heat up when an electrical voltage is applied
Implementation Method 2
the pressing device can include a pneumatically or hydraulically inflatable cushion to apply even pressure to the holding device with the cover against the inside of the channel
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a channel processing device (1) for arrangement within a channel (20), comprising a base body (2) and a processing unit (3) arranged on the base body (2) for processing a channel section by means of a motor. In order to enable precise positioning of the processing unit (3) relative to a channel section to be processed and to enable particularly reliable processing/repair of the channel section, the processing unit (3) is rotatably mounted on the base body (2) about a rotational axis (17) of the base body (2) by means of guides (10) on two opposite sides.