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HOME > Autimotive > Messring
Decelerator Sled System.
Decelerator_Sled_Test Systems_1AB-A_VD_E.pdf
Decelerator Sled Test Systems
MESSRING sled systems are compatible and available with different decelerators
  • bending bar brake
  • PU-tube brake
  • programmable hydrobrake Handling and operation standard on the level of a MESSRING car crash facility System features
  • Hydraulic drive with digital speed control
  • Large sled clamping surface
  • Quick stop through integrated emergency-brake function
  • Automatic positioning and retraction system
  • Low space requirement
  • Low-power electrical connection
  • Excellent price-performance ratio
  • Brake System.
    Programmable Decelerator for Sled Test
    MESSRING has redesigned its well proven crash pulse simulation system.
    Since 1997 we upgrade car- and sled test facilities with hydrobrake systems.
    Our customers all around the globe are satisfied working with this reliable high performing system.
    Based on the experience of these customers we developed a system which is a cost effective alternative to any acceleration system available.
    With the hydrobrake you get a tool that enables you to simulate crash pulses that can not be realized by conventional systems in a nondestructive way.
  • Crash pulse simulation on car and sled test facilities capable for upgrade of existing facilities
  • Excellent accuracy of pulse reproduction and velocity plot
  • Fast test preparation through automatic adjustment
  • Comfortable user interface and easy programming
  • Fast modification of crash pulse by integrated software tool
  • Capable for duplex operation on car test facilities
  • High testing rate by short converting time
  • Maximum braking force 2 MN or 3.2 MN
  • Space and cost effective system
  • High performance and reliability
  • Bending Bar Brake System
    Bending Bar Brake consisting of sheet metal brake system with roller guides and height adjustable sheet metal rests on both sides, including all fastening elements, max. stopping force app. 1 MN.
    PU-Tube Brake System
    Brake body with 3 x 3 holes, ø 60 mm, to take up to 9 PU tubes with a maximum length of 850 mm. Depending on the diameter of the brake olive, affixed to the mandrel, each tube can generate a braking force of up to 100kN. After braking, the mandrels are hydraulically pressed out of the brake.
    They are divided longitudinally, so they can be easily pulled off the brake mandrels.
    The scope of supply includes 1 set of PU tubes. The braking force can be adjusted by varying the number of tubes and the diameter of the so-called “olives” that are screwed to the front of the brake mandrels.
    Three sets of 9 olives are supplied: undersized, normal and oversized.
    Track Rails
    Micro Track Rail_2CA_VD_E.pdf
    MicroTrack Rail

  • Perfect combination of accurate guiding and almost unlimited view from film pit
  • Rail System which combines perfect guiding of vehicles with almost
  • unlimited view despite track rails
  • Usable in standard crash-test facilities and sled-test facilities as well
  • Surface mounted track rails; easy to install at any angle to center line
  • Designed for outdoor installation
  • Can be easily crossed with cars
  • Used on concrete and transparent cover panels
  • High stiffness
  • Easy relocatability
  • Very low height
  • Corrosion protection
  • Installation in existing rails possible
    Enhanced track rail system for guiding passenger cars, trucks and sleds.
    Unparalleled small dimensions-gap only 30mm! -
    and unique design combine guiding ultimate capabilities and view from
    a film pit that is limited by a beam not wider than70mm only!
  • MicroTrack Trolley
    This trolley is required in all cases in which a vehicle or truck has to be accelerated.
    The trolley is symmetrical, so it is suitable for tests in either direction. To change direction, all you have to do is to mount the vehicle hook rotated by 180°.
    Standard Rails
    vailable when requested for facility extensions. Standard rails are available as single-channel, dual-channel, triple-channel!
    Additional beams as ultra-precise runway for sled platforms are available too

    Please note:
    MicroTRACK can be built into standard rails without any major construction works!
    Standard Trolley
    For clamping the vehicle or sled to the steel cable. For use with propulsion systems with integrated rapid-braking feature.
    The trolley at both ends is firmly attached to the drive cable and is guided on all sides within the track rail system.
    Barriers & Accessories
    Static Rollover Test System
    Rear Impact FMVSS 208_2HA-B1_VD_E.pdf
    Rear Impact_ECE_R 34_2HB-B1_VD_E.pdf
    Rollover Sled FMVSS 208_2RA-A11_VD_E.pdf
    Side Impact ECE R 95__2HB-A1_VD_E.pdf
    SideRear Impact FMVSS 214301_VD_E.pdf
    Static Rollover Test System_1AF-A_VD_E.pdf
    The static rollover-test system is suitable for fuel leakage-tests according to FMVSS 301 before and after a crash test.
    It is either available for passenger cars up to 3,500 kg or 4,500 kg gross weight rating.
    The systems consists of:
    - Moveable frame with size: 8,800 mm x 3,320 mm
    - Three-phase motor with gearbox
    - Automatical positioning of the vehicle in steps of 90°
    - Rotational speed: 1-3 min./90°, adjustable
    - Dimensions of platform: 6,400 mm x 2,300 mm
    - Required space: 10,000 mm x 5,000 mm x 4,300 mm.
    All given dimensions refer to the system for cars up to 4,500kg.
    Rollover Sled FMVSS 208
    Rollover test system according to FMVSS 208. Sled with platform for the test vehicle and deceleration equipment for mounting on the roadway.

    The system is suitable for rollover tests of passenger cars in accordance with the regulations FMVSS 208 for vehicles up to 3,000 kg.
    The sled is designed for the pickup of all passenger cars and is guided in an existing track system, with tilt loading area for easy loading,
    the sled is coupled to the drive cable by means of a hydraulically actuated cable clamp or a trolley, the sled is braked at the unseating point by means of two hydraulic bumpers or by two crush tube bumpers mounted to ground anchors.
    Side/Rear Impact - FMVSS 214/301
    Moveable Impact Block_2EB_VD_E.pdf
    Moveable barrier for the test of occupant protection by side and rear impact according to FMVSS214/301 new.
    The barrier is equipped with fasteners for deformable test bodies (honeycombs), adjustable wheel angle 0°/±27° and 4 disc-brakes. The adjustment of the total mass is given by loading weights, which have to be mounted on predetermined spots.
    Side Impact - ECE-R 95
    Moveable barrier for occupant protection tests according to ECE-R 95.
    The barrier is equipped with fasteners for deformable honeycombs, a front shield with height adjustment and disk-braking of all 4 wheels. The center of gravity is equipped with fastening flange for triax accelerometer (NCAP).
    Rear Impact - ECE-R 34
    Moveable barrier for tests of occupant protection during rear-impacts according to ECE-R 34.
    The barrier is equipped with an integrated brake system acting on every of the 4 disc brakes.
    Rear Impact - FMVSS 208
    Moveable barrier for the test of occupant protection during rear impacts according to FMVSS 208 and 301. The barrier is equipped with fasteners for honeycomb blocks, 4 disc brakes and hydropneumatic emergency brake equipment. The impact surface of the barrier consists of a vertical, rigid, flat rectangle plywood plate (1,981 mm wide and 1,524 mm high) perpendicular to its direction of movement, with its lower edge horizontal and 127 mm above the ground surface.
    The moving barrier, including the impact surface, supporting structure, and carriage, weighs 1,814 kg in total.
    Impact Block & Attachments
    Moveable Impact Block
  • Each of the four faces can be used for impact
  • For 3,500 kg / 60 G
  • Can be rotated on the spot
  • Rotated by 360° in under ten minutes
  • Automatic guidance
  • Usable on uneven floors
  • Climbing performance 1 % at a total mass of > 90,000 kg
  • Anchored to the foundation at crash position
  • Four hydraulic undercarriages with two heavy-duty wheels each
  • Rotation or moving time typ. < 10 min

    This self moving block is fully remote controlled with integrated hydraulic supply.
    The intel-ligent, electronically monitored steering system, in connection with induction loops laid in the floor, al-lows a simple and fully automatic movement of the block.

    The hydraulic undercarriage system places much lower requirements on the flatness of the usually heavily stressed facility floor, compared to crash blocks moved on air cushions.

    The four impact faces and the possibility to rotate on the spot minimize the preparation time for various test configurations.
    In order to prevent a movement or tilt of the block at high crash loads, the block is anchored to the foundation for the crash test.
  • Fixed Impact Block
    Fixed impact block with mounted steel impact plate.
    The impact plate has grid for fastening crash barriers and deceleration devices , as well as for installation of cameras, barrier face load cells or impact barriers.
    The grid consisting of M16 threaded holes and grid patterns of 100 mm x 100 mm incl. 19 mm plywood sheet.
    For compensation of concrete tolerances (right angle to track, verticality and flatness) the impact plate is installed in a special procedure.
    The casting of a special concrete to achieve a positive-engaged connection to the concrete is the responsibility of the customer.
    Side Impact Pole
    Pole impact barrier, steel tube construction, concrete filling, post diameter acc. to customer specifications, welded, weld seams grinded smooth on the top and on the underside, surfaces primed and painted (RAL1004), height of post 1m
    30° Barrier
    Barrier for installation at the barrier face, symmetric design can be used on both sides, continuously height adjustable, made of steel segments, completely assembled and provided with all necessary fastening holes, welded segments, surfaces primed and painted (RAL1004), both impact surfaces coated with 19mm plywood panel.
    ECE Offset-Barrier
    Offset-barrier according to ECE. Barrier for installation at the impact block front side, made of steel segments, completely assembled and provided with all necessary fastening holes, welded segments, surfaces primed and painted (RAL1004), impact surface with 19 mm thick plywood panel.
    Control System
    Hydraulic OnBoard Brake System_2PA-B_VD_E.pdf
    Hydro-Pneumatic Vehicle Brake_2PA-A1_VD_E.pdf
    Trailing Cable Box_3AK-C31-1_VD_E.pdf
    Trailing Cable Box_3AK-C31-1_VD_E.pdf
    Trigger Box_3DA-A_VD_E.pdf
    Process control PLC system for crash operation.
    Fully automatic crash operation,controls all individual functions of the crash test facility (propulsion system…) and auxiliary systems (door interlock, lighting….).
    Provides closed loop control, guarantees for meeting the speed that is defined in the test preparation very precisely independently of speed and actual mass of the vehicle under test. Communicates with the peripheral components via profibus.
    Includes PLC-adapter and modem for remote maintenance and diagnosis.
    Uses a PLC type SIMATIC S7 that communicates via MPI with the facility control PC. The standard equipment provides power supply, CPU and digital and analog I/Os according to the facility requirements.
    Hydraulic OnBoard Brake System
    The system replaces the master brake cylinder of the test vehicle.
    It uses the in-car brake system, especially the front wheel brakes, for emergency stops after test abort.
    The brake system includes a pressure accumulator, hydraulic valve, pressure sensor, display, rechargeable battery and electronic control.
    The brake can either be operated via trailing cable and radio control.
    Additionally the brake can be activated by means of a tape switch e.g. for use on movable barriers.
    The tape switch trigger can be delayed by an integrated, adjustable timer.
    Hydro-Pneumatic Vehicle Brake
    The system replaces the master brake cylinder to brake a car under test by means of its internal braking system (front-wheel brakes) in the event of an emergency shut-down of the test.
    The system includes: 2 l stainless steel compressed-air reservoir, 24 V valve, air pressure monitoring controlled by the facility control system, Harting-plug and socket for connection to facility control, short-stroke master brake piston (6 bars air pressure generate 160 bars hydraulic pressure), mounted on a base plate.
    Trailing Cable Box
  • Power-, Network- and Trigger Distribution Box
  • Backup power supply with additional Li-Polymer battery (162Wh)
  • Separate housing for battery pack
  • Network or Profibus communication for switching and monitoring functions
  • Network switch 100 Mbit with 5 ports for DAS
  • Network switch 1 Gbit with 5 ports for cameras
  • Single plug system by AMP connector
  • Video synchronizing via trailing cable
  • Complete trigger distribution included
  • Emergency trigger with integrated accelerometer
  • with status display
  • universal I/O
    The crash proof trailing cable box for on-board use is designed to decrease weight of the trailing cable system. It also enables for various control and monitoring functions due to the integrated LAN or Profibus system, such as battery charge control, monitoring of power supply voltages and currents, switching of the power supply outputs or activating the emergency brake system in case of vehicle tests. Another function, realized by LAN or Profibus is the video control and monitoring of the video ready signal.

    The new trailing cable box consists of a junction box and a separate Li-Polymer battery pack. The battery pack contains 9 Li-Polymer cells with their charge and monitoring circuit. The battery pack can be separated from the junction box for maintenance.
  • Trailing Cable
    Light-weight trailing cable system (umbilical) PU-wrapped, kevlar-reinforced wear-resistant cable, diameter 18.5mm, ca. 550g/m, equipped with different wires for on-board power and net supply.
    Trigger Box
  • Suitable for coupling and uncoupling trigger signals
  • Crash-proof and compact
  • Internal shock sensor
  • NA3x compatible
  • Trigger-bus
  • 3 Switch outputs
  • Trigger input
  • RS485 I/O
  • Special Test Equipment
    Flying Floor FMVSS 201_RB-A_VD_E.pdf
    Universal Test Sled_2KA-B1_VD_E.pdf
    Universal Test Sled

    Test sled for use in tests with Hydrobrake, bending bar brake or PU-tube brake
    Threaded hole grid M12 50×100 mm
    Maximum deceleration force 3.2 MN
    Basic test sled for payload up to 1 t , size approximately 1.80 m x 2.80 m, welded rectangular profile frame, aluminium grid plate with M12 thread insert in a 50 x 100 mm grid for mounting of sled components.
    Flange plate for installation of impact wedge, 4 pendulum suspensions each equipped with 2 “Vulkolan” rollers, sideward and vertical guidance by means of demountable guide elements (front and rear), sled weight approximately 1,000 kg (with no wedge mounted), maximum allowable total weight 2,000 kg, mounting of camera, lighting and measurement assemblies possible.
    Delivery inclusive cabling and terminal connector.
    Flying Floor FMVSS 201
    Sled with platform (dimensions 6m x 5m, width x length) for lateral pole impact tests and curb tests.
    The sled running on PU-rollers is guided in track rail system and propelled by the regular trolley.
    A transparent floor insert in the center (3m x 2m) guarantees a perfect view for filmimg from below. The system is suitable for tests with passenger cars up to 4,000 kg.
    Film pit
    Steel frame for film pit. The frame is designed to be compatible with transparent and non -transparent cover panels.
    It is a precision steel structure that it designed to fit perfectly into the crash test facility environment and floor.
    It is equipped with a variety of setting options for alignment.
    Concrete Covers
    Non-transparent cover panels for film pits. The cover panels fit perfectly into the film pit frame and provide an excellent and rigid surface area for all kinds of crash tests.
    Each panel is individually aligned on-site to provide a perfect flat floor for heavy duty applications and shows a minimized gap to adjacent panels as well as to the film pit frame.
    The panels consist of a precision-welded steel pan, which various alignment options allow an outstanding integration into the floor environment of the crash area.
    MicroTRACKs are firmly installed in the panels also aligned and levelled to perfection.
    Transparent Covers
    Transparent cover panels for film pits. Replace the non-transparent panels whenever high-speed movie shots are taken from underneath. The cover panels fit perfectly into the film pit frame and provide an excellent and rigid surface area.
    Each panel is individually aligned on-site to provide a perfect flat floor and shows a minimized gap to adjacent panels as well as to the film pit frame.
    Even in case transparent and non-transparent panels are mixed a perfect flat test surface is guaranteed.
    The panels consist of an acrylic (PMMA) block (thickness according to static requirements) in a precision-welded steel frame, which various alignment options allow an outstanding integration into the floor environment of the crash area.
    MicroTRACKs are firmly installed in the panels also aligned and levelled to perfection. This type of panels combines almost unlimited view (limited by a beam not wider than 70mm) with guiding by the impact point.
    The acrylic is topped by a replaceable polycarbonate sheet (PC) as an impact protection.
    Propulsion Systems
    Electric Propulsion System
    Electric motor propulsion system for crash test facilities. Suitable for the testing of vehicles or sled structures.
    Operation in both directions possible.
    Power and performance according to test system specifications.

    Scope of supply:
    - electric motor
    - drive frame with drive shaft
    - drive winch with friction insert and clutches
    - hydraulic disc brake
    - brake winch with hydraulic disc brake
    - hydraulic cable pretensioner
    - second output for second cable possible digital encoder
    Hydraulic Propulsion System
    Hydraulic propulsion unit, operation in both directions possible.
    Welded steal frame with drive wheel with special lining, hydraulically actuated disk brake, hydraulic motor, hydraulic control manifold with servo-valve and pressure transducers, brake wheel with special lining, speed sensing, deflection pulleys for drive cable, hydraulic piping system, highspeed cable pretensioner. Power, torque and max. rpm according to application and technical test specifications. Components are primed and painted according to customer´s requirements.