SU996243A1 - Pressure regulator - Google Patents

Description

one

The invention relates to mechanical engineering, in particular to pneumatic brake systems of vehicles, and can be used in the automotive and tractor industries.

Closest to the present invention, the pressure regulator is advantageous for pneumatic brake brake systems of vehicles, comprising a housing in which the differential and auxiliary is interfered with the ability to interact with each other and auxiliary valve, a double valve that is perpendicular to the diaphragm piston, and chambers nejeoro peryntiH are formed in the housing , j rundown pressure, second regulating pressure, and regulated pressure, the first of which is limited by the upper working surface of the dresser and upper working surface. 20 auxiliary pistons, a second differential channel surface of the auxiliary pistons in the upper working surface, and a third the lower working surface of the differential piston til. However, the well-known regulator of temp. The reliability is insufficient because there is no adjustable pressure in the absence of the first regulating pressure. In addition, the regulator creates resistance to the passage of compressed air of the VS cylinder into the brake chambers, which significantly increases the time it takes for the pressure in the brake chambers to increase.

The purpose of the invention is to increase reliability and &

This goal is achieved by the fact that a supply pressure chamber is formed in the housing, and the double valve element is made in the form of an accelerator valve. A node that alternately communicates a regulating pressure chamber with a supply pressure chamber and atmosphere.

Fig. 1 shows a diagram of a brakes system with a davnevku regulator; on feg. 2 — pressure regulator; va fig.Z-3 6 the same, the first modification; Fig, 4 is the same, the second modification. In pressure regulator 1 (Figs. 1 and 2), opening 2 connects chamber A of the first regulating pressure P via pipeline 3 to the main brake control valve 4, and opening 5 to chamber B of the second regulating pressure P2 through pipe 6 to the compressed air supply line brake chambers 7, the pressure in which is changed by the brake force regulator 8, bore 9 - chamber B of the regulated pressure Pj through pipe 10 with brake chambers 11, and hole 12 - chamber G of the supply pressure P, through pipe 13 with a compressed air cylinder 14 . Hole 15 is intended to release compressed air from chamber B (brake chambers 11) to the atmosphere. The auxiliary piston 16 is provided with an elastic element 17 and under the action of its coupling the SC is pressed against the stop 18. Articulated telescopically with the auxiliary piston 16, the differential piston 19 is equipped with an elastic element 20 and under the action of its force / Qj is pressed against the stop 21, which is made in the auxiliary piston 16 In the center of the housing 22 of the controller 1 run-. The 23 intake valve 23 is not fit, and the differential piston 19 is on the saddle 25 of the outlet clip 26. Both valves 24 26 are connected to each other by the rod 27, on which the elastic element is fitted, 28 which presses the inlet valve 24 to its saddle 23, and form an accelerator valve knot. In the initial position, the inlet valve 24 is closed and the exhaust valve 26 is open. The adjustment mechanisms 29 and 30 allow the pre-tension of the elastic elements 17 and 2O to be re-tested and, consequently, the characteristic of the regulator. Non-working cameras D and E have a message with the atmoofer. The compressed air points 14 are connected to the main brake control clathan 4 via a pipe heat exchanger 31, and the points 32 are connected via a pipe 33, the main valve 4 controls the brakes and the 6- wire 34 with the brake regulator 8. . Vspomogatelvy porshev 16 vmeet verhvyuyu working poverhvost 35 shyushadyu P in vizhvyuyu working poverhvost 36 with an area Fj, Dvfferevtsvalvy porshev 19 vmeet verhvyuyu working over ness 37 with an area P, aifferevshash hydrochloric poverhvost 38 with n gasydvyu P4 434 nizhshoyu working surface 39 plopshdyu Fy . The controller (Fig. 2) works as follows. During deceleration, compressed air from cylinder 14 through pipeline 31, main valve 4 for controlling brakes, pipeline 3 and opening 2 enters chamber A of regulator 1 under pressure P-, I interact on top working surface 35 with area F, a piston 16 and the upper working surface 37 with the piston of the rim of the piston 19 differential. At the same time, the compressed air from the cylinder 32 through the pipeline 33, the main brake control valve 4, the pipeline 34 goes to the brake force regulator 8, and then, under pressure 2. to the brake chambers 7, and through the pipe 6 and the hole 5 - into the chamber B of the regulator 1, I will act on the lower working surface 36 with the auxiliary piston area FQ. 16 and on the Differential surface 38 with an area P4 of the differential matrix 19. Under the influence of the pressures P and P2 of the compressed air, overcoming the force Gl2 of the elastic element 20, the differential piston 19 moves downwards. At the same time, the exhaust valve 26 is closed, and with further movement of the differential piston 19, the inlet valve 24 is opened and compressed air from chamber D under pressure RD enters into chamber B and then through port 9, pipeline 1O goes into brakes 11. At the same time, compressed air acts under pressure P on the lower working surface 39 with an area Fg-differential piston 19. Thus, in chamber B, & The pressure P is determined from the expression (before the auxiliary piston starts to affect the differential piston) P - P – i P3 + P2 F4 + Q2 where svak - Corresponds to the effect of an elastic element 20 va differential piston upwards; zvah + - top vvvz. If pressure is P, the acting auxiliary piston 16 on top of the BECAUSE becomes greater than the force Q of the elastic element 17 and the pressure Pg, acting on it upwards, then the piston moves downwards and has an additional effect on the displaced pressure on it. P is determined from expression 1 P – P – 1 (P – mbp) + P2 (F4 – F2) Qi + Q2 F5 When the brake pressure in chambers A in B decreases, the auxiliary valves and the differential pistons move up. Inlet valve 24 closes, and the exhaust valve 26 is opened, and compressed fresh air: from the brake chambers 11 through the chamber B and the opening 15 goes out into the atmosphere. When the main chambers 7 exit (when), the regulator 1 works in a similar way. When braking, the compressed air from the cylinder 14 through pipe 31 | The main brake control valve 4, the pipe 3 and the opening 2 enters chamber A under pressure P, acting on the upper working surface 35 of the auxiliary piston 16 and on the upper working surface 37 of the differential piston 19. Under the influence of pressure P, overcoming the force QI of the elastic element a20, dyfferenyialny piston peremeshaets VNV This exhaust valve 26 is closed and the inlet valve 24 opens and compressed air from the chamber under Pressure T & Niemi Fv enters chamber Viv-1 brake. 11. At the same time, compressed air under pressure P acts on a wide working surface 39 of the differential piston 19. The value of pressure Pa is determined by the expression (before the auxiliary pores on the differential piston) P P + Qa If the pressure force P acting on when the auxiliary pole becomes higher than the force Q ynpyrtvogo element 17 acting on it from the bottom up, the auxiliary piston moves down and additionally acts on the differential piston. In this case, the value of Pj is determined from the relation P Pi () - Q-i + Qa P3 -; F5 With rastrimazhivanin pressure in Carmer A decreases, the auxiliary to the differential pistons P move up. Vent valve 24 is closed, and exhaust valve 26 opens into the compressed air from the brake chambers 11 through chamber B and vent 15 to the atmosphere.

& 96243 Regulator 1 can work even if G is connected to the compressed air supply line from the main brake control valve 4 to the opening 2 of the regulator 1. In FIG. 3 in 4 shows some modifications of the controller. Regulator 1, shown in FWG, 3, is distinguished by the fact that differential 19 and auxiliary 16 are not made stepless, which makes them difficult to manufacture. At the same time, the sum of the areas of the upper working 37 in the differential 38 surfaces of the active piston is equal to the area of its lower working surface 39 (Pa + Pl F5) t and the area of the upper working surface. 35 auxiliary piston (the area of its lower working surface 36 (F-, p2). In addition, the differential piston is not equipped with an elastic element 20. Regulator 1, shown n {1st on fvg. 4,: differs from the controller shown in FIG. 3 in that the auxiliary piston 16 is stepped, and the area of the upper working surface 35 is less than the area of the lower working surface 36 (). In addition, the auxiliary piston is not equipped with a single element 17 (the case when it is not necessary to adjust the characteristic of the controller). The proposed regulator provides any necessary correlation between regulating pressure regulators, as well as fast filling of brake chambers, which significantly increases the traffic safety of vehicles. In addition, regulating the characteristics of the regulator allows unification of vehicle braking systems with different design parameters. Formula acquired The pressure regulator is predominantly for the pneumatic brake systems of vehicles, which contains an integral casing in which they are placed with the possibility of operating with each other differential piston, a double valve, controlled by a two-pair 1-port port, and a displacement. the regular pressure of the second regulating pressure in the regulated pressure, first ke

Whose surface of the upper working surface of the two-piston and upper working surface of the auxiliary pistons, the second is the top of the two-sided two-sided piston in the working one of the secondary auxiliary piston, and a third is the bottom of the working surface of the two-shear-alloyed piston of the outer piston, and a third is the one of the two working surfaces of the two-shear-alloyed piston, which is the second piston; a fastCTBB5I, a pvta chamber is formed in the housing

The double pressure, and the double valve, is designed as an accelerating valve assembly, alternately with a pressure regulating chamber with a pressure supply chamber and an atmosphere.

Sources of information taken into consideration during the examination

1. USSR author's certificate in application number 2679166/11,, cl. 60 T 8/26, 1978.

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Claims (1)

Claim The pressure regulator is mainly for pneumatic brake systems of vehicles, comprising a housing in which the differential and auxiliary pistons are arranged to interact with each other. a double valve controlled by a differential piston, wherein chambers of a first control pressure, a second control pressure and a regulated pressure are formed in the housing, the first of 7 966843 of which are limited by the upper working surface of the differential and upper working surface of the auxiliary piston, the second by the differential by / · the upper differential and lower working surface of the auxiliary piston, and the third by the lower working surface of the differential piston, casting so that, in order to increase reliability and speed , a pressure chamber is formed in the housing, and a double valve is made in the form of an accelerating valve assembly, alternately communicating the camera in an adjustable manner The camera is powered on with the pressure and the atmosphere pressure.