Vehicle restraint system GRH-100

Overview
This powered rotating hook vehicle restraint (GRH-100) is an entry-level Dok-Lok® rotating hook restraint designed to secure traditional RIG-based trailers by engaging ICC bars, traditional 4x4 RIGs and pentagonal RIGs. The GRH-100 features a third-generation contoured hook providing approximately 20% more wrap than competitive restraints to help prevent traditional trailer separation accidents during loading/unloading operations.

Key Benefits

• Designed to address all traditional trailer separation accidents (e.g., early departure, trailer creep, landing gear collapse, trailer pop-up and upending).
• Exclusive contoured hook provides superior trailer wrap to secure outdated ICC bars and RIG types.
• Mounted carriage positioned above ground to reduce exposure to dirt, debris, snow, ice and standing water, improving reliability.
• Full complement heavy-duty bearings and needle bearing carriage rollers to minimize damage from heavy loads and premature pullout attempts.
• Standard vehicle restraint status communication (red/green lights) to communicate safe docking and departure states to drivers and dock personnel.
• Designed to integrate with interlock controls and digital/connected solutions to enhance safety, uptime and productivity.

Safety at the Loading Dock
Rotating hook restraints such as the GRH-100 help prevent trailer separation accidents by ensuring reliable RIG engagement and continuous status communication. The unit includes factory-set, non-adjustable motor clutch settings to help ensure consistent safety performance in the field.

Designed and Installed for Productivity
The GRH-100 is engineered for reliable operation with features that minimize downtime and unplanned maintenance, including robust bearings at high-pressure failure points and an off-ground carriage for easier maintenance and snow removal. Standard control enclosures (NEMA 4X) and interlock capability support safe, repeatable workflows and can simplify operator training.

Communication and Control

• Standard visual status communication (red/green lights) to indicate safe backing and departure states.
• Supports integration with Dok-Lok® controls and Dok-Commander® combined controls to interlock sequences of dock operations and enhance personnel safety.
• Optional hazard-recognition and verification features (e.g., Corner-Vu™, Leveler-Vu™, Pedestrian-Vu™, Lok-Vu™) provide line-of-sight or camera-based confirmation of safe conditions and can be interlocked with restraints for additional protection.

Connected Capabilities
The GRH-100 supports connection to a centralized digital platform for real-time visibility into equipment status, alerts, cycle counts, service history and analytics to improve safety and productivity. Connected monitoring can surface unsafe events (overrides, entry to unrestrained trailers) and provide maintenance trending to reduce downtime.

Application
The GRH-100 is the safest entry-level rotating hook restraint for traditional loading dock environments where securing RIG-based ICC bars and 4x4/pentagonal RIGs is required. It is best suited for facilities seeking a robust, powered rotating hook restraint with standard communication features and limited upgradeability.

Related Products

• SHR-5100 Shadow Hook® Restraint (upgradable option)
• RHR-1100 Rotating Hook Restraint

Caractéristiques / Spécifications techniques

• Exclusive Contoured Hook Design: Exclusive third-generation machined steel contoured hook with silver zinc plating to secure traditional RIG-based trailers (ICC bars, 4x4 RIGs, pentagonal RIGs).
• Working Range: Approximately 9"–24" working range for consistent RIG and ICC bar contact.
• Housing and Mounting: Spring-loaded structural hardened steel housing with single clad track; enclosed welded steel (5/16" / 8 mm) installation with (15) 5/8" wedge style anchor bolts and 22" of weld to front curb angle to receive trailer impact.
• Carriage Rollers: Full complement needle bearing carriage rollers to minimize damage from heavy loads and premature pullout attempts.
• Motor: 1/4 HP motor rated IP66 for dust- and water-infiltration protection.
• Motor Clutch: Non-adjustable motor clutch, individually factory-set to help ensure field safety.
• Certifications: Designed and tested to meet/exceed ANSI MH30.3 performance testing standards.
• Pull-Out and Mounting Benchmarks: Installed with more than 100,000 lbs of mounting force and 32,000 lbs of pull-out force (benchmark developed by manufacturer).
• Warranty: Standard Warranty — 1 year parts / 1 year labor. Extended Warranty — 2 year parts / 2 year labor.
• Environment and Service: Off-ground mounted carriage to reduce exposure to contaminants and facilitate snow removal; completed dock survey required for proper application and safe installation.