Hydraulic Быстрая остановка Клапан Hägglunds VQCB 800

Description Valid for Hägglunds CA, CB, CBP, CBM Maximum flow 800 l/min Fast response time, i.e. 100 ... 150 ms Maximum pressure 350 bar Open and closed loop Features Compact and robust design Mounted directly on Hägglunds motors Product description Hydraulic circuit, VQCB 800 General The hydraulic quick stop valve VQCB is designed to stop a roll mill rolls without stopping the electric motor and without any need of a mechanical brake. The stop is done by blocking the oil flow from the Hägglunds hydraulic motor. A very short braking time is possible due to the small moment of inertia and quick response from the hydraulic valve. Function The high (working) pressure shall be connected to the INL port and the low (return) pressure to the OUT port on the valve. The cartridge valves (1 and 2) are controlled by the solenoid valves (3 and 4). The stop valve can be mounted to the hydraulic motor for clockwise rotation; A on valve to C on motor, or counter clockwise rotation; A on valve to A on hydraulic motor. The rotation seen viewed from the motor shaft side. Deactivated valve is indicated by an inductive sensor with high output. Running condition In normal operating condition the solenoid valves (3 and 4) are energized, making the valve (2) open and valve (1) closed. Stop condition When activating the quick stop, the solenoid valves (3 and 4) are de-energized which will open valve (1) and close valve (2). In same sequence the pump will be destroked by Hägglunds control system (Spider). Comments Reversed function/rotation is possible, see chapter "Mounting" - section "Installation instructions". General instructions The VQCB hydraulic quick stop valve is designed to be used in open and closed circuits. Project planning, assembly and commissioning of components for radial piston hydraulic motor require the involvement of qualified personnel. Depending on operational state of the radial piston hydraulic motor or stop valve (operating pressure, fluid temperature), the characteristic may vary. Pressure ports: The ports and fixing threads are designed for the specified maximum pressure. The machine or system manufacturer must ensure that the connecting elements and lines correspond to the specified operating conditions (pressure, flow, hydraulic fluid, temperature) with necessary safety factors. The data and notes contained herein must be adhered to. Observe instruction regarding tightening torque and assembling of valve. Connection of valve to the hydraulic motor Wrong connection causes incorrect valve stop function Ensure that the valve is connected correctly to the hydraulic motor due to rotation direction Clockwise rotation (seen from shaft side): A-connection on valve to C-connection on hydraulic motor Counter clockwise rotation (seen from shaft side): A-connection on valve to A-connection on hydraulic motor Type code ln order to identify Hägglunds equipment exactly, the following ordering code is used. These ordering codes should be stated in full in