SU880828A1 - Automatic train braking system - Google Patents

Description

I

FIELD OF THE INVENTION The invention relates to the automotive industry, in particular to the braking systems of the articulated vehicle.

The closest to the proposed one is the braking system of the articulated train, containing a power source, a braking valve, one of which has sections connected to the brake chambers of the tractor and the other to the trailer air distributor, a pneumatic cylinder control valve, one of which is connected to the valve installed in the exhaust manifold of the engine, and the rod of the other - with the fuel pump rail, the cavities of the pneumatic cylinders are connected by a main line to the control cavity of the brake valve section related to the trailer | 1.

The known braking system provides a proportional braking of the trailer depending on the effectiveness of the engine braking; however, this braking is carried out equally for both braking on a slope and for braking the engine in a flat section. 2c This system does not take into account neither the angle of the log nor the loading of the trailers, but the existence of CTBL. HiKi clicks a ml of steady movement.

.trains So, for example, when the valve’s maximum closure is closed, the trailer section of the brake crane is controlled by the maximum pressure, which causes the wheels to lock when the trailer is empty, and when the trailer is fully loaded and at a small angle of opening of the valve, when driving on a slope, the trailer incurs tons of fuel, as The trailer section of the brake valve is proportional to the angle of opening of the flap. The train is moving fast. This system complicates the control of the train, since the effect of engine braking on a vehicle depends on the road profile, on the trailer loading and on the gear engaged.

The aim of the invention is to improve the braking efficiency of the engine of the internal train and to simplify the control when braking the engine by automatically maintaining the required pressure in the trailer brake chambers.

Claims (1)

The goal is achieved by those. that the braking system is equipped with two distributors, successively installed in a line connected to the engine compartment of the brake crane section, referred to as a chain, while the spool of the first distributor cavity is equipped with a kinematic connection for connection with a tow hitch tractor having the shock absorbers are of opposite effect, and the second valve is pneumatically controlled, and its control chamber is connected to the output of the control valve. The drawing shows a diagram of synchrotron-trains system. The system contains sources I and 2 of power, a brake valve 3 connected by lines 4 and 5, respectively, by one section 6 to brake chambers 7 tons of gacha, and the second section 8 to the air distributor 9 of the trailer. The crane 10 is connected to the power source 1, to the pneumatic cylinders 11 and 12, and to the gold distributor 13, which in turn is pneumatically connected by a pipeline to a three-way spool valve 14 and the power source 1. The pneumatic cylinders 11 and 12, respectively, are connected with the valve 15 installed in the exhaust manifold 16 of the engine (not shown) and with the rail 17 of the fuel pump. The three-position spool valve 14 is kinematically connected to the hook 18 with elastic elements of a double-sided action (springs) of the coupling device 19, and the pipe 20 is connected to the control cavity 2 of the Lenin section of the trailer brake valve 3. When braking by the motor train of an internal train, the driver acts on the crane control button 10 , while the compressed air from the power source 1 is fed through a pipeline into the control cavity of pneumatic cylinders II and 12. As a result, the flap 15 and the rail 17 will decrease dissolved orifice of the exhaust manifold 16 and eliminate the fuel supply pump to the engine internal combu-Rani. Simultaneously with the entry of compressed air and pneumatic cylinders I and 12, the air acts on the spool valve 13, the latter occupies the position in which the source 1 of the power supply communicates with the three-position spool valve 14. The latter takes the position corresponding to the force of the Coupling device 19. In the case of compression forces ( pritse 11 runs on the gauge) the hook moves to the left and the distributor 14 occupies the position where the cavity 21 of the brake valve 31 is connected to the distributor 13, and hence to the source ikom 1 nutrition. As a result, the brake valve 3 communicates section 8 and line 5 with power supply 1, and compressed air acts on the air distributor 9 of the trailer, causing the brake chambers of the trailer to communicate with the power source 2 mounted on the trailer. There is a trailer braking. In the case of obtaining forces close to zero, the hook 18 moves to the right and the distributor 14 occupies a neutral position at which the pressure in the cavity 21 is constant, providing a constant braking force. In the event of tension, the valve 14 communicates the cavity 21 of the control valve of the brake valve 3 with the atmosphere, causing a decrease in pressure in the brake chambers of the trailer. When the driver stops acting on the control box of the crane 10, it returns to its original position under the influence of the spring and communicates the pneumatic cylinders 11 and 12 with the atmosphere. At the same time, the distributor 13 occupies the position in which the entrance cavity of the distributor 14 communicates with the atmosphere. Under the influence of the springs, the pneumatic cylinders II and 12 return to their initial position, with the damper 15 increasing the flow area of the exhaust manifold 16, and the rail 17 of the fuel pump is brought to its original position. As the brake stops to stop, the tensile forces in the coupling device 19 begin to increase and the valve 14 communicates the cavity 21 of the brake valve 3 with the atmosphere. Under the action of the spring, the elements of section 8 of the brake valve 3 occupy the same position, together with the atmosphere line 5, connecting it with the air distributor 9 of the trailer. The distributor 9 moves to its initial position and, locking the power supply 2, communicates with the atmosphere the brake chambers of the trailer, as a result, the trailer slows down. In this way, the braking efficiency of the internal combustion engine of the train is increased by 15-20%. This system is universal. It takes into account the slope of the road, loading the trailer and allows you to increase the speed of the trailer on the slope by 10-15%. Since the braking power of the internal combustion engine is spent only on braking t gacha, driving a trailer is greatly facilitated. The invention includes a braking trailer system containing a power source, a thermo crane, one of the sections of which is connected to the brake chambers of the tractor, and the other - with a prig / epha distributor, a pneumatic cylinder control valve, one of which is connected to a flap installed in the exhaust the engine manifold and the rod of the other with the rail of the fuel pump, wherein the cavities of the pneumatic cylinders are connected by a line with the control cavity of the brake valve section relating to the trailer, characterized in that.