Test Stand Construction Section

SPRING TESTING STAND

MODEL TC2-2

This test rig has been designed for determining the performance curves of compression metal and rubber-metal elements of vehicle suspension systems and for recording the measurement results in the form of paper printouts and digital files saved on a computer hard disc. When the spring to be tested is installed on the test stand, the test cycle is automatically carried out with current test data being continuously recorded. The test parameters are set and the test stand operation is controlled by a computer program. The test stand is used at the Repair Department of the company METRO WARSZAWSKIE Sp. z o.o.

Technical specifications:

·   Maximum compression force 120 kN;

·   Maximum test stroke 475 mm;

·   Maximum outside diameter of the spring 320 mm;

·   Test speed:

–   Minimum 0.9 mm/min;

–   Maximum 908 mm/min;

·   Number of preliminary loading cycles 0 ÷ 99;

·   Power consumption 1.5 kW max.;

·   Overall dimensions:

–   Test machine 700×700×2070 mm;

–   Control cabinet with test equipment 700×700×800 mm;

·   Mass about 750 kg

The test stand may be adapted for the testing of springs having other characteristics.

BRAKE SERVO TESTING STAND

MODEL AB-778

This device is intended for testing vacuum power brake servos (servomechanisms, boosters) complete with a master cylinder (such assemblies being often referred to as a power brake unit) or without the master cylinder, within the scope of leak-tightness, negative pressure value at ambient temperature with or without load, efficiency ratio without and with vacuum applied, brake pedal stroke absorption by the servo, as well as force, work, and/or power output.

The test stand includes:

·   Hydraulic system for precise control of brake servos complete with a master cylinder;

·   Pneumatic system enabling precise control of the test conditions;

·   Measuring, monitoring, and control system making it possible to carry out test procedures in the auto (programmable) or manual control mode.

STAND FOR TESTING THE BRAKE CALLIPER SHIFTING FORCE

MODEL AB-779

This facility has been designed for determining the force necessary to shift the callipers of hydraulic disc brakes of passenger cars and light trucks and vans.

The test stand includes:

·   Pneumatic system enabling precise control of the test conditions;

·   Measuring, monitoring, and control system making it possible to carry out test procedures in the auto (programmable) or manual control mode.

HANDBRAKE TESTING STAND

MODEL AB-780

This stand has been designed for testing the handbrake systems of drum brake mechanisms of passenger cars and goods vehicles of up to 3.5 t capacity within the scope of durability, efficiency of the mechanical system, and fatigue strength.

The test stand includes:

·   Pneumatic system enabling precise control of the test conditions;

·   Hydraulic system;

·   Measuring, monitoring, and control system making it possible to carry out test procedures in the auto (programmable) or manual control mode.

GENERAL-PURPOSE BRAKE CALLIPER TESTING STAND

MODEL AB-781

This test rig has been designed for testing callipers of hydraulic disc brakes of passenger cars and light trucks and vans within the scope of leak-tightness, residual braking torque, stroke absorption, piston movement starting pressure, rollback, and piston return load.

The test stand includes:

·   Set of fixtures for the fastening of all calliper types to customer’s requirements;

·   Hydraulic system for precise feeding of brake fluid to the callipers under tests

·   Pneumatic system enabling precise control of the pressure-generating actuators and the hydraulic part;

·   Measuring system for direct monitoring of the test conditions

·   Measuring, monitoring, and control system making it possible to carry out test procedures in the auto (programmable) or manual control mode.

STAND FOR TESTING POWER BRAKE UNITS AND THEIR COMPONENTS

MODEL AB-782

This facility has been designed for functional testing of power brake units, vacuum brake servos, and master cylinders.

The test stand includes:

·   Positive pressure pneumatic system for leak-tightness testing of reservoirs;

·   High vacuum system for the feeding of brake servos;

·   Two testing stations with linear electric drive systems;

·   Measuring, monitoring, and control system making it possible to carry out test procedures in the auto (programmable) or manual control mode.

LABORATORY STAND FOR FUNCTIONAL CHECKING OF BRAKE UNITS OF AGRICULTURAL TRACTORS

Model AB-787

The AB-787 test stand is a general-purpose system designed for testing components of pneumatic and hydraulic brake systems; in particular, it is intended for functional testing of brake units used in agricultural tractors.

RUBBER PROFILE CUT-TO-FIT MACHINE

Model AB-788

The machine provides a possibility of automatic cutting of rubber profiles to a preset length. The shape of the surface of cutting may be set to user’s needs.

MACHINE FOR LASER MAKING OF VALIDATION MARKING STAMPS Model AB-790