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The principle of operation of the brakes
Consider the principle of the most simple schematic pneumatic actuator for example, ZIL-130 release 1984 The actuator system consists of: • compressor: • pressure gauge; • cylinders of compressed air; • rear brake chambers; • connection head with the brake system when- flail; • stop valve; • brake valve; • front brake chambers. During engine operation, atmospheric air through the filter it is forced by the compressor into the cylinders, where it is stored under pressure. The air pressure in the cylinders is set Diagram of a pneumatic actuator of brakes of the vehicle the pressure regulator, which is located in the compressor and when the preset pressure level in the cylinders from connects the compressor from the drive system. When tormore- the research Institute of the driver pressing the pedal acts on the brake- Noah crane, which opens the access of air from the cylinders in the top brake chamber wheel brakes. Brake nye camera trigger collapsible fists Colo Doc, which are bred and come into contact with brake BA Rabanne wheel, producing the braking action. When you release the pedal, the brake valve opens you- move compressed air from the brake chambers to atmosphere, the resulting rethimnou the fist rotated to the outcome- tion position, and the coupling spring is removed the pads from Thor- brake drums, is released. Gauge in the driver's cab allows to monitor the pressure level air system pneumatic actuator of the brakes. Since 1984 the cars ZIL-130 entered from changes in the design of the brake system for the purpose of satis- litorania modern safety requirements of motion tion. There was a unification of devices and machines tor- brake system of automobiles KAMAZ. Upgraded the drive consists of independent contours: • wheel brakes of front wheels; • drive of brake mechanisms of back wheels; • drive Parking and emergency brake systems (only for rear wheels); • actuator brake mechanisms of the wheels of the trailer, when- water emergency release the Parking brake Noah systems, actuators other pneumatic devices simultaneously- the moat and units on the vehicle (for example, a pricing system- transonega regulation of air pressure in Chi nah). All the contours are electro pneumatic sensors SWE- tovo emergency alarms reduce the pressure of JUA- air order. Pressure gauges monitored the pressure in the RA- the working brake system. If the system pneumatic actuator emergency occurs lowering the air pressure in the tripping the spring-loaded brake and slow down rear wheels. For the subsequent release needed should press the emergency release. In case tea absence of compressed air in the system the car could but disinhibited manually screw devices for mechanical compression of the accumulator spring. The purpose, design and operation of major appliances and units of pneumatic actuator. Compressor — two cylinder, piston, leads- Xia in action V-belt from the pulley of a valve- Thor. The pressure regulator maintains the specified level the air pressure in the system actuator. While the who- rastenie pressure up to 0,7-0,75 MPa compressed air from the comp spring arrives in the pneumatic system. When the pressure of the air ha rises to a maximum level limit of regular of stimulation, opens the discharge valve. Injection air compressor with virtually no response at- chinet out into the atmosphere. The pressure in the system reduces Xia. Once the pressure drops to the lower limit of the reg- cancellation (0,62-0,65 MPa), the discharge valve closes- Xia, and the compressor again begins to pump the air in the pneumo- the drive system until the next cycle of unplugging the comp spring. Double safety valve serves to: • division highway, extending from air Bal- womb for two independent circuits; • disable one of the paths if damaged; • saving of compressed air in the intact. - d or both loops when feeding damage line. The brake valve controls a working brake tion system of the vehicle and the braking mechanism the MOU of the trailer. Applied to these two circuits, but dis- a few to use in three separate circuits. The crane Parking brake (manual) is designed to the control of the Parking and emergency braking systems and to enable valve control of the brake system the theme of the trailer (semi-trailer). Brake chambers actuate Thor- brake mechanisms of the wheels, transmitting the pressure of the compressed air Ghost on the ramparts razgonnyj Kulakov, who is moving on to- boats, braked. When you press on the brake pedal, the compressed air steps- et from brake valve radiofrequency in the cavity of the Cham- ry and causes movement of the diaphragm. Effort reports- expressed in terms of the supporting steel disk on the rod and to the lever, causing its deflection and rotation rasinovo fist Thor- brake mechanism. Brake pads thus tightened- toil to the drum, causing a braking of the wheel. When the holiday- the Kania pedals air escapes from the brake chamber through the the faucet in the atmosphere, and brake pads free of bar- ban, stopping the inhibition. Brake chambers rear wheels work in startup the research Institute of the working, Parking and emergency brake systems. If the camera operates in the mode of braking, braking me- the mechanism is driven by the diaphragm device. In the mode of the Parking or emergency brake — spring- tion standard, and the Parking brake provides only the full release of air from the cylinder- DRA accumulator, and the spare — partial release air. |
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