Torque-Limiting End Effector for Automated Gladhand Coupling

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Solution Overview

Problem

The manual connection of pneumatic and electric lines in tractor-trailer systems requires substantial dexterity and force, limiting the automation of self-driving vehicles.

Innovation Solution

A mechanized gladhand system using cameras for identification and localization, a clutch for engaging/disengaging the clamp, a motor for controlling the clamp configuration, and a mechanized end effector with a rotational drive mechanism to automate the connection process, reducing the torque and structural requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual connection of pneumatic and electric lines is performed, then the connection can be established, but substantial dexterity and force are required

Engineering Contradiction:
Improveease of connectionVSAvoidforce required
Core Design Contradiction:
Ease of operationVSForce

Solution Approach 1:

The patent replaces manual mechanical operations with an automated end effector system that uses a motor-driven rotational mechanism to couple gladhands. The system substitutes human dexterity and force with automated mechanical actuation, allowing the connection process to be performed without substantial manual effort while establishing reliable pneumatic and electric line connections.

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

2Extent of automation

If automated end effector system is implemented, then automation is improved, but device complexity increases

Engineering Contradiction:
Improveautomation levelVSAvoidsystem complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The end effector is designed as a multi-functional device that can perform multiple operations: it couples gladhands for pneumatic lines, handles electrical connectors, and integrates camera systems for identification and localization. By consolidating these functions into a single automated device, the system achieves high automation while managing complexity through functional integration rather than separate systems.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces a camera system as an intermediary component that enables the automated system to identify and localize targets before execution. This intermediary layer allows the automated end effector to operate autonomously by capturing visual data and translating it into positioning information, thereby achieving high automation without requiring complex direct sensing and control mechanisms.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If torque requirements are reduced, then ease of operation improves, but connection reliability may be compromised

Engineering Contradiction:
Improvephysical exertionVSAvoidconnection reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The automated end effector system replaces manual torque application with a motor-driven rotational mechanism that provides controlled and consistent torque. This substitution ensures that adequate torque is applied reliably to secure connections without requiring high physical exertion from operators, thereby maintaining connection reliability while improving ease of operation through automation.

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

Data Source

PatentUS12509168B2Torque-limiting end effector
Publication Date: 2025.12.30 PACCAR INC
  • US12509168B2 patent drawing
  • US12509168B2 patent drawing
  • US12509168B2 patent drawing

AI summary

The present technology describes systems and methods for a mechanized gladhand and an end effector. The mechanized gladhand may have a collar capable of rotational motion while the mating surface may be in contact with a second surface without rotating. This may reduce reaction loads while maintaining the integrity of the connection. The end effector may include a drive motor, clasping tool, and/or driving installed tool that may be used to couple a tool with the gladhand or may be used in other applications. The end effector may have a compact design to allow precise control. The movement of the end effector with the gladhand may be controlled based on image processing to align the tool with another component.