Asymmetric Tractor Trailer Connection Device
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Solution Overview
Problem
The manual connection of electrical and pneumatic lines between tractors and trailers is time-consuming and prone to errors, and there is a need for automation in areas where human presence is undesirable or prohibited.
Innovation Solution
A connection device with complementary pneumatic and electrical plug elements, featuring non-rotationally symmetrical and rotationally symmetrical double occupancy designs, along with a fastening device and locating system, enables automated and secure connections between tractor and trailer, preventing defective connections and allowing for easy positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual connection of electrical and pneumatic lines is used, then flexibility and simplicity are maintained, but the process is time-consuming and prone to errors
Solution Approach 1:
The patent combines multiple separate connection functions (electrical plug connection, pneumatic line connection, and mechanical coupling) into a single integrated connection device. The electrical plug and pneumatic lines are bundled together as one assembly that connects to the tractor in a single operation, eliminating the need for separate manual connections and significantly reducing connection time while maintaining manageable complexity through functional integration.
Solution Approach 2:
The connection device serves multiple functions simultaneously: it provides electrical power and control signals through the plug connection, transmits pneumatic pressure for brake control through integrated lines, and maintains mechanical coupling. This multi-functionality in a single device improves productivity by eliminating sequential connection steps while the standardized design keeps complexity manageable.
2Reliability
If automated connection is implemented, then connection time is reduced and errors are minimized, but device complexity increases
Solution Approach 1:
The electrical plug connection employs an asymmetrical design where the plug and socket have complementary non-circular geometries that allow connection in only one correct orientation. This asymmetric design ensures automatic correct alignment during automated connection processes, guaranteeing connection accuracy without requiring complex alignment mechanisms or control systems, thus maintaining manageable device complexity.
3Productivity
If multiple lines are connected simultaneously, then connection time is reduced, but the risk of defective connection increases
Solution Approach 1:
Multiple connection functions (electrical plugs, pneumatic lines, mechanical coupling) are merged into a single integrated connection assembly. This ensures that all connections are made simultaneously in the correct configuration, eliminating the risk of defective connections that could occur with sequential manual connections. The integrated design maintains reliability while achieving fast simultaneous connection.
Solution Approach 2:
The asymmetrical plug and socket design ensures that multiple connection elements are automatically aligned in the correct orientation during insertion. This geometric constraint guarantees that all electrical and pneumatic connections are made in the proper configuration simultaneously, preventing defective connections while maintaining high connection speed.
Data Source
AI summary
A connection device for connecting of electrical and pneumatic lines between a tractor and a trailer having a first end, a second end, and at least two lines connecting the two ends, wherein at least a first pneumatic plug element and at least a first electrical plug element is arranged at the first end and wherein a first plug-in unit is arranged at the second end, having at least a first pneumatic connecting element and at least a first electrical connecting element.