Automated Tractor-Trailer Coupler with Curved Track Alignment

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Solution Overview

Problem

The manual process of connecting and disconnecting pneumatic and electrical systems between tractor and trailer vehicles is inefficient, requiring drivers to exit the cab and physically manipulate connectors, which is unsafe and time-consuming.

Innovation Solution

A multi-function connector system with flexible, extensible lines and sensors, integrated with a tractor-mounted mechanism that enables automatic lateral and vertical movement, allowing for remote or automated connection and disconnection of pneumatic and electrical systems between tractor and trailer, including a pneumatic cylinder for interconnection and a powered lock for secure engagement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If manual connection process is used, then drivers can directly control the coupling, but the process is time-consuming and requires drivers to exit the cab

Engineering Contradiction:
Improveautomation of coupling processVSAvoidcomplexity of coupling system
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The system enables self-service automation where the coupling mechanism automatically detects, aligns, and connects the pneumatic and electrical connectors without requiring manual intervention. The automated mechanism serves itself by using sensors to detect connector positions and actuators to perform the coupling actions, eliminating the need for drivers to exit the cab while managing the complexity through integrated control systems.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical operations with an automated mechanical system equipped with sensors and actuators. The system uses optical or proximity sensors to detect connector positions and electrically-controlled actuators to perform the coupling movements, substituting the manual mechanical process with an automated electromechanical system that reduces driver involvement while managing system complexity through electronic control.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If manual connection process is used, then the system is simple, but the process is unsafe and time-consuming

Engineering Contradiction:
Improvespeed of coupling processVSAvoidcomplexity of coupling system
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by pre-positioning the connectors using extensible cables and pre-aligning them through automated movement mechanisms before the actual coupling occurs. The sensors detect connector positions in advance, and the automated mechanism prepares the connection by bringing connectors into alignment, enabling faster coupling while managing complexity through proactive positioning systems.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces slow manual mechanical operations with an automated electromechanical system that uses sensors for detection and electrically-controlled actuators for rapid movement and connection. This substitution significantly increases coupling speed by eliminating manual manipulation while managing system complexity through integrated electronic control systems.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If extensible cables are used for connectors, then flexibility is provided, but alignment between tractor and trailer is challenging

Engineering Contradiction:
Improveflexibility of connector positioningVSAvoidalignment precision of connectors
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The system uses sensors to continuously monitor the positions of the extensible cables and connectors, providing feedback to the control system. Based on this feedback, the automated mechanism adjusts cable extension and connector positioning in real-time to achieve precise alignment, maintaining flexibility while ensuring accurate connection despite variations in tractor-trailer positioning.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent employs dynamic adjustment mechanisms that allow the extensible cables to flex and extend while the automated system actively controls their positioning. The system dynamically adjusts cable length and connector orientation based on real-time sensor data, maintaining both the flexibility needed for misalignment accommodation and the precision required for successful coupling through continuous active control.

Inventive Principle:
Principle #15Dynamics

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

Enables safe, efficient, and automated coupling and uncoupling of tractor-trailer systems, reducing driver intervention and improving safety by allowing the system to operate without manual handling of connectors, while being compatible with existing vehicles for retrofitting or new installations.

Implementation Method 1

A pneumatic cylinder for interconnection and a powered lock for secure engagement

Methodology Applied
Scientific EffectPneumatic pressure: Pressure Increase

Data Source

PatentUS8505949B2Automatic pneumatic/electrical coupler system for tractor-trailer combination vehicles
Publication Date: 2013.08.13 SAF HOLLAND INC
  • US8505949B2 patent drawing
  • US8505949B2 patent drawing
  • US8505949B2 patent drawing

AI summary

A powered coupling system is configured to interconnect utility lines such as fluid and/or electric lines of a vehicle tractor to a trailer. A curved track is mounted to a frame of the tractor, and the system includes pneumatic and/or electrical connectors that move along the curved track to align the connectors with a corresponding connectors on a trailer. A linear actuator causes the connectors on the tractor to shift vertically to connect and disconnect the connectors on the tractor to connectors on the trailer. The curved track permits alignment of the connectors on the tractor with the connectors on the trailer even if the trailer is not in a straight line with the tractor.