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Surface Mounted Automatic Vehicle Restraint Systems
The Madoors USA SMVR-800 Surface Mounted Automatic Vehicle Restraint System is a hydraulic-operated surface-mounted automatic wheel locking system that secures trucks, lorries, and trailers to the loading dock before transhipment operations begin — preventing the vehicle from sliding forward during loading and unloading and releasing the vehicle with simple push-button control once transhipment is complete. No excavation is required at the factory site — the SMVR-800 is surface-mounted, assembled, and operational quickly without groundworks. The PLC automation system integrates the wheel lock with the dock leveler, motorized industrial door, and dock shelter — coordinating the complete loading dock sequence automatically after vehicle lock confirmation. Guaranteed for 2 years with 10-year spare parts availability.
The most rugged wheel restraint solution for extreme weather conditions, the SMVR-800 operates reliably in all weather with self-lubricated guide bearings, no mechanical drive components to wear out, and the simplest maintenance profile available. Two-tone signaling lights for the driver and LED interior/exterior lights for the operator provide clear communication for all participants in the loading operation.
TECHNICAL SPECIFICATIONS
The Madoors USA SMVR-800 operates through a hydraulic wheel chocking mechanism — the restraint engages the rear wheel of the docked truck from below and behind, physically preventing forward movement during loading and unloading operations. The hydraulic actuation provides consistent, high-force engagement and disengagement regardless of ambient temperature — maintaining reliable operation in the extreme cold and heat conditions that cause mechanical and pneumatic systems to underperform or fail.
The system is surface-mounted — no pit excavation or foundation works are required at the dock floor. The above-ground mounting means that dock operations continue regardless of weather conditions — frozen ground, standing water, and ice accumulation in pit-mounted systems do not affect the surface-mounted SMVR-800 performance.
Self-lubricated guide bearings eliminate the scheduled bearing lubrication requirement — reducing maintenance intervals and eliminating the maintenance event that is most commonly missed at high-cycle loading dock positions. No mechanical drive components to wear out removes the primary mechanical failure mode of wheel restraint systems — the hydraulic actuation has no gear, chain, or belt mechanism subject to progressive wear.
The PLC automation system manages the complete loading dock sequence after vehicle lock confirmation — in the standard sequence: vehicle tire wheel is locked, the loading bellows advance to the forward closing position and interrupt indoor/outdoor air circulation, the loading ramp activates, and the factory industrial panel door opens. All dry contact signals between the PLC, dock leveler, motorized door, and dock shelter are processed automatically — the operator's single push-button vehicle lock command initiates the complete coordinated dock activation sequence.
Available in both manually operated and hydraulically operated configurations — manually operated for budget-sensitive or lower-cycle applications, hydraulically operated for the highest-cycle continuous production and logistics environments where push-button automation is the operational requirement.
Standard equipment includes LED interior and exterior lights in green and red, power LED green-red status lights, sounder signal, remote control buttons, loop detectors for vehicle presence detection, and human safety photocell sensors for operator and personnel protection during wheel engagement and disengagement.
KEY FEATURES
Surface Mounted — No Excavation Required
The surface-mounted installation is the primary practical advantage of the SMVR-800 over pit-mounted vehicle restraint systems — no excavation, no concrete pit construction, no drainage installation, and no underground service coordination are required. The SMVR-800 is installed directly on the existing dock floor surface, assembled, and put into immediate operation. This installation simplicity directly reduces the installation cost, timeline, and disruption to ongoing dock operations during installation.
PLC Integration — Automated Complete Dock Sequence
The PLC-based software management system integration with the dock leveler, motorized door, and dock shelter creates a fully coordinated loading dock sequence from the single vehicle lock command — the operator locks the wheel and the entire dock activates in sequence automatically. This coordinated automation eliminates the multi-step manual activation sequence that conventional systems require, reduces operator error in the activation sequence order, and directly increases loading productivity by minimizing the setup time between vehicle arrival and loading commencement.
100% Secure Vehicle Lock — Loading Accident Prevention
The 100% secure vehicle lock before loading prevents the truck from sliding forward during loading — the most common cause of loading dock accidents where a forklift or operator falls into the gap created by a vehicle moving away from the dock face during loading. The SMVR-800 eliminates this gap-creation risk by physically restraining the wheel against any forward movement throughout the complete loading operation.
Extreme Weather Operation — Most Rugged Restraint Solution
The above-ground hydraulic surface mount provides operation in all weather conditions — the system continues working during snow, ice, rain, and temperature extremes that halt pit-mounted systems through ground freezing, ice accumulation in the pit, and water ingress into the below-ground mechanism. This all-weather reliability directly maintains loading dock productivity through the winter months when weather-related dock equipment failures create the most significant operational disruption.
Self-Lubricated Bearings — No Mechanical Wear Components
The self-lubricated guide bearings and absence of mechanical drive components eliminate the two primary maintenance requirements of conventional wheel restraint systems — bearing lubrication and drive component replacement. This maintenance-free mechanical design directly reduces the total maintenance cost and maintenance downtime of the loading dock over the full service life of the SMVR-800.
Two-Tone Driver Signal & LED Operator Lights — Clear Communication
The two-tone light signal for the truck driver provides clear red/green visual communication of the dock status from the driver's cab — confirming when the wheel is locked and departure is not authorized, and when the restraint has been released and departure is permitted. LED interior and exterior lights provide the same status information to the operator inside the loading area. This dual-audience signaling system eliminates the communication ambiguity between driver and loading operator that causes departure accidents when the driver is not clearly informed of the lock/release status.
Hydraulic Wheel Chocking — Simple Push-Button Control
The hydraulic wheel chocking engagement and disengagement by simple push-button control eliminates the physical effort and time of manual wheel chocking — where operators must manually position, wedge, and remove heavy chock blocks. Push-button hydraulic engagement is faster, more consistent, and more reliably executed than manual chocking under the time pressure of production logistics operations. The hydraulic force of engagement also provides more positive restraint than manual chock placement.
Lift Gate Compatible — Landing Gear Non-Interference
The SMVR-800 wheel restraint engages the tire/wheel assembly without impeding lift gate operation or interfering with the vehicle's landing gear — allowing normal dock operations to proceed without the equipment conflicts that affect restraint systems with larger above-ground profiles that obstruct vehicle access equipment.
Virtually Any Truck Configuration — Universal Application
The restraint system capability to secure virtually any truck or vehicle configuration covers the complete range of vehicles using loading docks — straight trucks, articulated lorries, semi-trailers, refrigerated vehicles, and specialized transport vehicles. Universal vehicle compatibility eliminates the need for configuration-specific restraint systems at mixed-fleet loading docks.
PLC AUTOMATED DOCK SEQUENCE
Step 1 — Vehicle Detection
Loop detectors confirm vehicle presence at the dock position. The operator initiates the restraint engagement.
Step 2 — Wheel Lock Engagement
The hydraulic wheel chocking system engages the vehicle rear wheel. Lock confirmation is transmitted to the PLC. Green driver signal changes to red — departure not authorized. Green operator LED confirms vehicle locked.
Step 3 — Dock Shelter Activation
The PLC commands the dock shelter bellows to advance to the forward closing position — interrupting indoor/outdoor air circulation and completing the dock seal.
Step 4 — Dock Leveler Activation
The PLC commands the dock leveler to activate — bridging the dock face to the truck bed for forklift and pallet jack access.
Step 5 — Industrial Door Opening
The PLC commands the motorized industrial door to open — providing the full loading access opening for the loading operation.
Step 6 — Loading Operation
The complete dock is active and sealed. Loading or unloading proceeds with the vehicle 100% secured and all dock equipment coordinated.
Step 7 — Release Sequence
Loading complete. Operator initiates the release sequence. The door closes, the dock leveler retracts, the shelter bellows retract, and the wheel restraint disengages. Driver signal changes to green — departure authorized.
ASSEMBLY & INSTALLATION SEQUENCE
Dock Assessment & System Configuration
Dock floor surface condition, vehicle wheel position at dock, required restraint model — manual or hydraulic — PLC integration requirements with dock leveler, door, and shelter, and LED signal light positions are confirmed.
Surface Preparation & Anchor Installation
The SMVR-800 mounting position on the dock floor is confirmed. Anchor bolt positions are drilled and anchor bolts are installed. No excavation is required.
SMVR-800 Unit Installation & Anchoring
The surface-mounted unit is positioned at the confirmed dock floor position and anchored. Wheel engagement geometry for the specific truck wheel position at the dock is verified.
Hydraulic System Connection
Hydraulic supply lines are connected from the hydraulic power unit to the SMVR-800 mechanism. The system is filled, bled, and pressure-tested through multiple engagement and disengagement cycles.
PLC Integration & Control System Connection
PLC dry contact wiring between the SMVR-800 and the dock leveler, motorized door, dock shelter, LED lights, sounder, and remote control buttons is completed. The automated dock sequence program is loaded and tested.
Loop Detector & Photocell Installation
Vehicle presence loop detectors are installed at the dock floor approach position. Human safety photocell sensors are positioned and calibrated for restraint engagement and disengagement protection.
LED Signal Light & Sounder Installation
Driver two-tone LED signal lights are installed at the vehicle approach position. Operator interior LED lights are installed at the dock control station. Sounder signal installation and test are completed.
Full System Sequence Testing & Handover
Complete automated dock sequence testing — vehicle detection, lock engagement, shelter activation, leveler activation, door opening, loading simulation, release sequence — is conducted. 2-year guarantee documentation and 10-year spare parts guarantee are compiled into the project handover package.
DEPLOYMENT SCENARIOS & USE CASES
Madoors USA SMVR-800 Surface Mounted Automatic Vehicle Restraint Systems are specified for any loading dock requiring push-button vehicle wheel locking with PLC-integrated dock automation.
- Factory production loading dock vehicle restraint systems
- Logistics and distribution center dock restraint systems
- Cold storage and refrigerated warehouse dock restraints
- Food and beverage production facility dock systems
- Pharmaceutical manufacturing facility loading docks
- Automotive manufacturing plant loading dock restraints
- Retail distribution center vehicle restraint systems
- Chemical and industrial facility loading dock restraints
- E-commerce fulfillment center loading dock systems
- Airport cargo terminal loading dock vehicle restraints
- Port and maritime terminal loading dock restraints
- Supermarket and retail supply chain dock systems
- Hospital and healthcare supply loading dock restraints
- Government and military supply depot dock systems
- Any loading dock requiring 100% secure automated vehicle wheel restraint with PLC dock integration
- Category: Vehicle Restraint & Dock Equipment