Air-driven disc brake mechanism and brake cylinder

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Proposed mechanism comprises support surrounding brake disc and brake linings abutting on brake disc on both sides. One of said linings on clap side can be actuated by clamp rotary lever. Disc brake support flange accommodates brake cylinder secured thereto to receive compressed air. Said cylinder can act on said rotary lever by cylinder rod and has return spring. Cylinder rod is displaced by spring back into free state to abut on the flange or on bottom resting on cover flange. Said flange makes the return spring support. Cover is made of thin-wall sheet of stable-shape metal foil. Concentric hole is made in said cover. In compliance with first version, brake mechanism cylinder has said cover makes form the preassembled assy without cylinder rod. In compliance with second version, brake mechanism cylinder return spring abut on thin-wall cover abuts on brake mechanism disc flange to made its support.

EFFECT: longer life.

17 cl, 5 dwg

 

The invention relates to pneumatically disc brake mechanism in accordance with the restrictive part of paragraph 1 of the claims, and is arranged to feed him in a compressed air brake cylinder in accordance with paragraph 13 of the claims.

Such pneumatically disc brake mechanism is known, for example, from EP W.

When this brake cylinder by means of a threaded bolt secured directly to the flange of the caliper disk brake mechanism, and by means of the threaded bolt is determined by the position of the brake cylinder to the brake mechanism, and thus the position of the connection heads for compressed air, resulting in various installation conditions identified different ways of mounting the cylinders.

For filing a high level of air pressure to actuate the lever of the brake mechanism proper dimensions of the brake cylinder, which revealed a number of deficiencies.

Due to arise in the process of riding shocks or vibrations threaded connection between the brake cylinder and the caliper disk brake mechanism must be executed in the same massive, and cover the brake cylinder through which mounting conducted in the options and on the inner wall of which is usually based recoil.

Thus, the center of gravity of the brake cylinder is located relatively far from the area of connection with the caliper disk brake mechanism, resulting in mounting screws acts accordingly a large bending moment, which requires aligned with the constructive execution of the screws.

In addition, functionally determined, a relatively large structural length of the brake cylinder is contrary to the requirements optimize structural dimensions and, equally, the optimization of the mass.

The piston rod of the brake cylinder passes through the slot in the flange of the caliper disk brake mechanism, which in respect to the additional space of the brake cylinder sealed by also covering the stem of the bellows.

In accordance with the stroke length of the rod due to compression or stretching of the bellows is formed, a displacement volume, which causes in a tightly closed caliper disk brake pressure changes. Under full braking consequently, the caliper disk brake mechanism may occur excessive pressure to 0.4 bar. This problem can be solved in accordance with the invention, below will be considered in more detail based on the example implementation.

In the particular case of incomplete sealing against the environment at such a phase of excessive pressure air is ejected, so when reverse motion of the brake cylinder upon actuation of the brake system establishes a low pressure.

Due to temperature fluctuations is also called an effect, which of course largely exposed to the brake mechanism. Thus the air in the caliper disk brake mechanism expands when heated and contracts when cooled.

As in the preferred embodiment installed in a cargo vehicle disc brakes are often used due to environmental conditions of high humidity, in the presence of the above-mentioned lack of water tightness under conditions of low pressure is sucked into the inner space of the brake mechanism, which can lead, for example, to corrosion of mechanical structural elements with the risk of total failure of the brake system.

Due to the aforementioned large working stroke length is removed from the caliper disk brake mechanism of the unstable location of the seal, which is problematic for maintenance and transportation elements of the disc brake mechanism before installing, that is, before the brake cylinder will be mounted so that there is a danger of damage the Oia seal before mounting the brake cylinder on the caliper disk brake mechanism.

The basis of the invention lies in the task of improving pneumatically disk brake or the brake cylinder in accordance with the original version so that they were optimized in weight and in respect of the design space and that their lifespan was increased, and the braking cylinder could be attached more easily and with little cost (ventilation due to the position of the variant implementation of the invention).

This problem is solved by a disk brake mechanism, characterized by signs of paragraph 1 of the claims, or by the brake cylinder, characterized by the signs of paragraph 13 of the claims. In accordance with paragraph 1 of the claims flange forms itself - or, if necessary, together with thin - not working independently as a support - leaf foil between them - support for the return spring. Thereby attaching the brake cylinder to the caliper disk brake mechanism can be significantly optimized due to the small size and light weight as opposed to previous variants of carrying out the invention. The cylinder may, in a preferred embodiment of form and also pre-assembled site without rod cyl is echoes.

For account established in accordance with paragraph 2 of the claims of the device of the self, which to date has used made with the possibility of Electromechanical controls the disk brake mechanisms, reduced to the same power consumption of the brake cylinder, which has the consequence of a significant decrease in constructive space while maintaining performance properties of the brake mechanism.

Already with relatively small coefficients of the self is possible a significant reduction in the overall dimensions of the brake cylinder, and a spring energoakkumulyator. Thus the device of the self through the appropriate selection of the parameters of the angles of the wedge or ramp is chosen so that the maximum possible coefficient of friction of the brake lining has a reliable auto release the brake mechanism.

Otherwise than electrically driven disk brake, engine for clamping the brake mechanism thus should not be used for vacation.

The reduction of the structural size is possible, in particular, by reducing the stroke length, which for a gain of, for example, 2.7 and with a corresponding transmission ratio of the brake mechanism at the present time, for example, s mm is reduced by 24 mm

Such a small length of the course leads to the fact that covering the bellows can be made very compact and in the simplest case, can be performed with only one corrugation, and bellows with reinforced steel seal surface is inserted directly into the through-hole at the junction of the brake cylinder and caliper disk brake mechanism, and then into the hole of the caliper disk brake mechanism, through which is passed a rod.

In principle, the rod may be made of two parts and, moreover, to consist of a cylinder rod, which end face is adjacent to the brake lever and plate stock, which is approximately hemispherical recess, in which the cylinder rod is inserted the other end. Plate rod forms together with membrane diaphragm piston, which divides the formed chamber of the brake cylinder and which in the case of braking is supplied compressed air. The cylinder can be made as simple as membrane cylinder, which has no plot braking by spring energoakkumulyator.

Attach the brake cylinder to the caliper of the disc brake cylinder due to the small dimensions and low weight compared to the previous variants of execution can be optimized. So, a cap which is akrival brake cylinder on its facing the flange side, made in the form of thin-walled shaped sheet items, by type stable in the form of a metal foil, to which its end is adjacent the return spring, while the other end rests on a plate stem (plate membrane).

The cover is located in shaped glass flange of the caliper disk brake mechanism, the flange forms a support for the return spring, as the thickness of the sheet cover can be selected so thin that it is impossible not accompanied by deformation of the seal return spring to the cover.

The invention relates also to the subject in accordance with paragraph 18 of the claims, according to which the return spring is designed to directly or through a thin, type foil lid against the flange of the disk brake mechanism as a support.

Minimizing the thickness of the cover also leads to reduction of weight, as well as to the refusal of the fixing screws for fixing the brake cylinder on the caliper disk brake mechanism.

Instead, the brake cylinder can be attached to the caliper disk brake mechanism, for example, by means of the tie ribbon.

In addition, first, cover the brake cylinder is made in the form of a so-called rolling of the edges, whereby the membrane cylinder is held on the housing of the brake cylinder. In accordance with this brake cylinder housing of the brake cylinder, diaphragm cylinder, lid, plate, rod and recoil spring are pre-mounted in a single unit, while the cylinder rod and the bellows are integral parts of a pre-assembled caliper disk brake mechanism.

When mounting the brake cylinder he only placed on the shaped glass flange caliper disk brake mechanism, and the cylinder rod almost automatically centered in the hemispherical recess of the plate stock.

Next to consider another advantage of the disk brake mechanism in accordance with the invention according to paragraph 2 of the claims.

For normal braking mechanism indeed, for example, the following.

The amount of displacement of the piston rod in the bellows at full stroke length of the known brake is approximately 65 cm3.

The amount of absorption traveling rod, if necessary, with the bellows, when the stroke length of 4.1 (i=15,6) is about 16.5 cm3.

For volume changes ΔV really following expression:

ΔV=65-16,5=48,5 cm3.

For the brake mechanism with samozrejme in accordance with the invention, indeed, on the contrary, following.

The amount of displacement of the rod Zilin the RA bellows is at full stroke length of 30 cm approximately 30.5 cm 3.

The amount of absorption of three performed with the possibility of the rod bellows is, on the contrary, when 4,16 cm (i=7,2) approximately 25 cm3.

So, really the following expression:

ΔV=30,5-25-5 .5 cm3.

Residual volume changes are minor and at the proper calculation of the dimensions of the bellows can be completely omitted.

Thus, the problems caused by the presence of low or excessive pressure as described above is further prevented.

Other preferred embodiments of the invention are disclosed in the subsequent dependent claims.

The invention is illustrated by drawings, which presents the following:

figure 1 is a fragment of the disk brake mechanism in accordance with the invention, in section, in side view;

figure 2-4 disc brake mechanism in different positions of adjustment;

5 is a schematic top view of a fragment of the disk brake mechanism in the context.

Figure 5 presents a disk brake with move support, located on both sides of the brake disc 55 of the brake pads 2, 3.

An embodiment in the form of a disk brake with move support is a feasible alternative design.

Embodiments of the in the form of a disk t is masnago mechanism with rotary support plate or disk brake mechanism with a stationary caliper or mixed forms of designs are also possible, however, in this case is not presented.

Disk brake with move support has a support plate 32, which contains the clamping device.

The support plate 32 of the disc brake mechanism through the guide 46 to bias the caliper moving image passes through stationary relative to the axis of the shield 31 of the brake mechanism.

Presented in figure 1-4 brake cylinder 27 as the engine is installed on the support plate 32 of the disc brake mechanism and through the rod 26 of the cylinder acts on the clamping device through the established in the preferred embodiment, the eccentric in the support plate 32 of the disk brake rotary lever 15 of the disk brake, which is designed to perform a rotary movement by means of the rod 26 of the cylinder upon actuation of the brake mechanism.

2 and 3 show a disc brake mechanism, respectively, before mounting the brake cylinder 27, while figures 1 and 4 show an assembled position, the brake cylinder 27 on the support plate 32 of the disc brake mechanism.

Figure 2 and 3 we can clearly discern that the brake cylinder forms a separate structural node and attached to the support plate 32 of the disc brake mechanism of the end zone is closed provided with a concentric hole to which the cap 49 in the area of the outer edge, and through a hole in a preferred embodiment, may be a control rod or rod 26 of the cylinder.

For connection to the support plate 32 of the disc brake mechanism formed flange 1, which is in the form of glass and has a concave inner side wall, which becomes oriented radially outward circular flange 51.

On the fixed flange 1, the brake cylinder 27, which are provided with clamping ring 50 which encircles the flange 51 on the one hand and the flange 53 of the housing 42 of the brake cylinder, and presses them together.

Between the two ribs 51, 53 clamped circular thickening 52 formed on the membrane cylinder 44, which divides the brake cylinder 27 to section 40 of the working brake and the space 43, which may be supplied with compressed air.

On facing the flange 1 side of the membrane cylinder 44 is fixed to the plate 45 of the piston rod is made in the form of a hemispherical recess 54, in which the face side includes a rod 26 of the cylinder.

The rod 26 of the cylinder passes through the hole in the flange 1 that holds the o-ring 25 for installation of the bellows 20, which, on the other hand, through the seal 47 is attached to the rod 26 of the cylinder, and the seal 47 is fixed on the rod 26 of the cylinder.

Bellows, for example, with only one corrugation hermetics the separating section 40 working braking from the inner part of the caliper 32 disk brake mechanism.

As a pre-assembled structural elements of the support plate 32 of the disc brake mechanism is completed by a rod 26 of the cylinder and the bellows 20 and the brake cylinder 27 on its facing toward the flange 1 side in the area of the outer edge is closed by a cover 49.

This cover 49 grabs thickening 52 as well as the flange 53 of the housing 42 of the brake cylinder, and serves as a support for the return spring 48, which on the other hand relies on a plate 45 of the stem.

While the contour of the cover 49 is aligned with the flange 1, i.e. it is made convex on the outer surface and adjacent to the concave wall of the flange 1.

The flange 1 is, thus, as a support for the return spring 48, which is in the off position, i.e. during transport of the brake cylinder 27, as a pre-assembled structural node is in the fully uncompressed state.

When the above-mentioned rotation of the rotating lever 15 of the brake mechanism in the event of braking it directly through at least one brake plunger 11 or through the pressure plate 4 acts on the brake pad 3 of the clamp (figure 5).

When this brake plunger 11 and the rotating lever 15 of the brake mechanism and brake plunger 11 and the pressure disc 4 articulated to each other so clicks the zoom, what brake plunger 11 when the clamp disk brake mechanism is fully or at least mostly able to follow the movement of the brake pads 3 of the clamp in the direction of the periphery of the brake disc 55 and the clamping device is designed so that the brake pad 3 may influence compressive force.

Brake pad 3 of the clamp is in the compression disk 4, which can move parallel to the friction surface of the brake disc and at the expense of the contained rolling bodies in the form of beads 5 and 6 may be in working connection with a wedge-shaped ramps 7, 8 axially varying along the length of the pressure plungers 9, 10, which are at an acute angle of more than 9° and less than 90° oriented relative to the friction surface of the brake disk.

The ramp 7, 8 could be additionally formed in the compression disk 4. The balls 5, 6, or other suitable rolling elements would be conducted in this case in hemispherical recesses of the pressure plungers 9, 10, which would be part of the device of the self in accordance with paragraph 1 of the claims.

With pressure disk 4, as mentioned earlier, articulated brake plunger 11 to transmit force in the direction of the brake disc 55 compressive and tensile forces. This swivel is sudestada in this case by means of a bolt 33 and a fork head 34.

This swivel at the offset of the pressure disk 4 in the direction of the periphery allows rotary movement of the brake plunger 11 around the center 12 of the bulb (located on the eccentric to the axis of rotation of the spherical bearing 13.

The spherical bearing 13 on the eccentric axis 14 of the rotating lever 15 of the disk brake mechanism for transfer of control efforts is placed on the brake plunger 11. He swinfen with the screw rod 16, and the threaded rod 16 is again rigidly connected to the housing 17 of the hinged support.

Brake plunger 11 forms together with the screw rod 16 is arranged to change the length to adjust the wear rod or adjusting piston.

Similarly, both the pressure of the plunger 9, 10 swiney with threaded spindles 18, 19, which transmit the reference force of the pressure plungers 9, 10 on the support plate 32 of the disc brake mechanism.

Threaded spindles 18, 19 are connected with the screw shaft 16 through the synchronization mechanism. This achieves the fact that the rotational movement of the adjusting drive only simultaneously affects both push plunger 9, 10, and the brake plunger 11.

The rotating lever 15 of the brake mechanism with low friction losses placed in two of the support bracket 21, 22 by means of two bearings 23, 24 the quality of the Oia, moreover, the support brackets 21, 22 are rigidly connected to the support plate 32 of the disc brake mechanism.

Push the plungers 9, 10 its facing the brake disc 55 ends placed in the guide plate 28 so or formed so that existing ramps 7, 8 parallel to the friction surface of the brake disc support efforts are introduced into the guide plate 28 and from it depending on the direction of rotation of the brake disc 55 on the guide surfaces 29 or 30 are displayed on the shield 31 of the brake mechanism.

The direction of the pressure plungers 9, 10 and brake plunger 11 is carried out on them facing the brake disc 55 ends solely by the guide plate 28 and the shield 31 of the brake mechanism.

The support plate 32 of the disc brake mechanism and the actuator 35, 36, 37 of the adjusting device, as well as a guide for the displacement of the caliper is not exposed to the County efforts. When this pressure plungers 9, 10 in the preferred embodiment, the simply screwed directly to the guide plate 28 or pressed therein.

Further, as an example describes the process of braking with disc brake.

In recognition of the intention of carrying out braking by actuating the brake pedal and thereby connected to t rosnay pedal brake setting device to the brake cylinder 27 is supplied compressed air, so when the deviation of the membrane 44, the rod 26 of the cylinder is moved.

The rotating lever 15 of the disk brake mechanism is rotated in its bearings 23, 24 rolling and moves, thus, also its eccentric shaft 14, and thereby the spherical bearing 13 in accordance with the ratio arms of the lever in the direction of the brake disc 55. The movement of the spherical bearing 13 through the brake plunger 11 or chain structural elements 12→13→17→16→11→33→34 is transmitted to the clutch disc 4.

Pressure disc 4 at first to overcome the air gap with the brake plate 3 perpendicular to its surface friction is moved to the brake disk 55. When you fit the brake pads 3 to the friction surface of the brake disc 55 of the brake pad 3 and coupled with it the pressure disc 4 due to the friction forces arising are moved together with the brake disc 55 in the direction of its rotation.

The balls 5, 6 are held along the ramps 7, 8, and contribute this to the fact that the pressure plate 4 in addition to its movement on the periphery as the device of the self strenuously moves to the brake disk 55.

Transferred from the brake plunger 11, the force of adhesion is increased in accordance with increased brakes caliper 32 disk brake mechanism. Due to peripheral offset the deposits of the pressure disc 4 brake plunger 11 carries out a rotary movement around the spherical bearing 13 and the bolt 33.

Brake lining 2 side operation, as the brake with move support, usually due to the offset of the caliper disk brake mechanism is mounted on the brake disc 55. In this case, should not be provided by any of the devices of the self.

The brake cylinder 27 is made in this case in the form of a combined brake cylinder with section 40 of the working brake and section 41 of the Parking brake.

1. Pneumatically disc brake, contains
covering the brake disc (55) caliper (32) of the brake mechanism,
designed to fit on both sides of the brake disc (55) brake pads (2, 3), from which the brake lining (3) of the clamp is arranged to actuate by means of a clamping device, preferably by rotating the lever (15) of the clamping device,
and on the flange (1) caliper (32) of the disc brake mechanism is fixed brake cylinder (27), is arranged to feed it with compressed air,
which is made with the possibility of exposure to rotating the lever (15) of the brake mechanism via a rod (26) of the cylinder and which has a return spring (48)through which the piston rod (26) of the cylinder is moved back in the unloaded source put the e and adjacent to the flange or to the bottom resting on the flange of the cover (49), characterized in that the flange (1) forms a support for the return spring (48), and cover (49) is made of a thin sheet in the form of long-term stable in the form of a metal foil and/or in the cover (49) is performed preferably concentric with the hole.

2. The brake mechanism according to claim 1, characterized in that it contains a device of the self, which has, in particular, the coefficient of the self, which is chosen in such a way that after braking is automatic vacation of the brake mechanism.

3. The brake mechanism according to claim 1 or 2, characterized in that the flange (1) is made in the form of a Cup and has on its inner side, a concave side wall, which adjoins adjusted her cap (49).

4. The brake mechanism according to claim 1 or 2, characterized in that the cover (49) with clip holds the circular edge of the membrane cylinder (44) on the housing (42) brake cylinder.

5. The brake mechanism according to claim 1 or 2, characterized in that the edge of the membrane cylinder (44) made in the form of thickenings (52).

6. The brake mechanism according to claim 1 or 2, characterized in that the cover (49) holds thickening (52) on the flange (53) of the housing (42) of the brake cylinder, the cover (49) captures thickening (52) and the flange (53).

7. The brake mechanism according to claim 1 or 2, characterized in that the partially overlapping the rod (26) of the cylinder bellows (20), with one of the parties, hermetically attached to the hole of the flange (1), and, on the other hand, tightly attached to the rod (26)of the cylinder.

8. The brake mechanism according to claim 1 or 2, characterized in that the rod (26) of the cylinder with his converts to a rotating lever (15) brake end is a plate (45) rod fixed to facing the flange (1) the bottom side of the membrane cylinder (44).

9. The brake mechanism according to claim 1 or 2, characterized in that the spherical end of the rod (26) of the cylinder is installed in the hemisphere (54) plate (45) stem.

10. The brake mechanism according to claim 1 or 2, characterized in that the flange (1) has a circular, extending radially outward, the flange (51), which partially adjacent the cover (49), and to connect the brake cylinder (27) and flange (1) provided with clamping ring (50), which is designed to compress together the flange (51), the cover (49), thickening (52) membrane cylinder (44) and the flange (53) of the housing (42) brake cylinder.

11. The brake mechanism according to claim 1 or 2, characterized in that at least the brake pad (3) of the clamp is arranged to move in the direction parallel to the axis D of rotation of the brake disc and parallel to the friction surface of the brake disk.

12. Pneumatic brake cylinder, in particular for a disk brake according to any one of claims 1 to 11, containing to bus (42) brake cylinder and located therein a return spring (48), which is adjacent to the bottom of the cover (49), characterized in that the cover (49) is made of a thin sheet in the form of long-term stable in the form of a metal foil and/or it forms a pre-assembled site without cylinder rod.

13. Brake cylinder according to item 12, characterized in that the cover (49) is performed preferably concentric with the hole.

14. Brake cylinder according to item 12 or 13, characterized in that the cover (49) with clip holds the circular edge of the membrane cylinder (44) on the housing (42) brake cylinder.

15. Brake cylinder according to item 12 or 13, characterized in that the edge of the membrane cylinder (44) made in the form of thickenings (52).

16. Brake cylinder according to item 12 or 13, characterized in that the cover (49) holds thickening (52) on the flange (53) of the housing (42) of the brake cylinder, the cover (49) captures thickening (52) and the flange (53).

17. Pneumatic brake cylinder, in particular for a disk brake according to any one of claims 1 to 11, comprising a housing (42) brake cylinder and located therein a return spring (48), characterized in that the return spring (48) through a thin-type foil lid is attached to the flange of the disk brake mechanism as a support.



 

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30 cl, 13 dwg

FIELD: transport.

SUBSTANCE: invention relates to machine, particularly, to vehicle braking systems. Bake chamber has common body. In the body, through guiding hole with sealing, rod is passing which contacts from one side with rod of power assembly and from energy accumulator - with membrane dividing energy accumulator into cavities which membrane communicates with fluid pressure source from one side and spring from other side. Rod of spring cavity is made hollow and fixed against axial displacement by means of clamping member rigidly fixing the membrane between disks. Power spring is installed between disk and energy accumulator cover. Brake retraction mechanism is made as screw pair including screw and its threaded fixation in the centre of cover; the screw is installed in hollow part of rod with possibility to contact with inner surface of hollow part of rod by means of pulling member. Pulling and clamping members are made capable to displace hollow part of rod within gaps. Contact points of hollow part of rod inner surface with pulling and clamping members are located on surfaces with intersecting curvature radii having common intersecting point located inside hollow part of rod.

EFFECT: lower load on sealing installed in the hole of brake chamber common body, as well as increase in possible tilt angles of rod in spring cavity without substantial increase in sealing load.

1 dwg

FIELD: railway transport.

SUBSTANCE: invention refers to the field of railway transport and in particular to brake equipment of the railway transportation vehicles. The brake equipment of the railway transportation vehicle contains subsystems with brake control valves, control reservoirs, automatic modes, air brake cylinders for each guided vehicle and provides independent transfer of braking efforts to the operating mechanism of the guided vehicles pursuant to its operational conditions. The system is equipped with an additional control reservoir so that each guided vehicle has one (two) reservoir (a) located in the body of the bolster, two double-piston (triple-piston) or coupled air brake cylinders that influence the wheel pair jaws in parallel.

EFFECT: more efficient brake holding ability of the transportation vehicles, more stable braking characteristics and operational safety, more optimal configuration of the braking equipment on the guided vehicle without any changes to the existing dimensions.

3 cl, 3 dwg

Car braking device // 2506179

FIELD: transport.

SUBSTANCE: invention relates to railway wheeled vehicles. Bar braking device consists of brake conduit connected via pipes with disconnecting valve and air pressure control valve. The latter is connected in its turn with extra cylinder and extra tank connected in its turn with extra cylinder on its opposite side. Hollow plunger slides inside said extra cylinder and houses sliding piston with rod having the channel to communicate hollow plunger above-piston chamber with atmosphere. Said piton is spring-loaded by compression spring. Helical compression spring is fitted between hollow plunger end section and extra cylinder. Piston rod is articulated with lever gearing acting at brake shoes that get in contact with car wheel in braking.

EFFECT: compact design, expanded operating performances of braking hardware.

1 dwg

FIELD: transport.

SUBSTANCE: invention relates to railway transport, particularly, to electric rolling stock braking systems. Electric rolling stock braking system comprises brake main line, air control valve, spare tank, extra tank, stepless axial regulator and two-step pressure relay. Stepless axial regulator comprises diverging weights secured at the cup to interact with moving thrust bearing interacting via elastic element with moving baffle for control over inlet valve. Moving baffle is provided with vent channel. Two-step pressure relay has one of control valves confined by a large moving baffle and small moving baffle interconnected by a rod. Transfer mechanism is composed of toothed rack secured at moving thrust bearing to interact with gear and cam fitted on the shaft together with said gear. Said cam interacts with the stop.

EFFECT: simplified design, higher reliability and efficiency.

4 cl, 1 dwg

FIELD: transport.

SUBSTANCE: invention relates to railway wheeled vehicles. Proposed brake comprises brakes shoes with lever-type control system, brake main line, air control valve and spare tank with communication lines. One of control levers is connected with brake cylinder rod and slotted clevis to accommodate extra cylinder rod pin therein, extra cylinder including compression spring. Annular grooves are made on extra tank cylindrical surface generatrix to interact with spring-loaded solids of revolution fixed in radial channels of spring-loaded piston. Extra tank under-piston chamber is communicated with pipeline feeding compressed air from air control valve via feed valve to charge said extra tank. Said feed valve operates at compressed air pressure higher than that required to retain railway vehicle in braked state.

EFFECT: simplified design.

2 dwg

FIELD: transport.

SUBSTANCE: invention relates to railway wheeled vehicles. Proposed brake comprises brake line connected with air control valve with spare tank and main braking cylinder and extra cylinder. Extra cylinder rod can reciprocate and is fitted in the groove of clevis hinged to two-arm lever of the main brake cylinder. Brake and extra cylinders are arranged one cylinder block so that their length mirror axes are located in parallel in one plane. Through channel is made in cylinder block wall, between cylinders, for rod to slide therein, rod one end is rigidly coupled with extra cylinder piston rod and opposite end is rigidly coupled with bush sliding on brake cylinder rod to abut on brake cylinder piston.

EFFECT: higher reliability, compact design.

2 dwg

FIELD: transport.

SUBSTANCE: invention relates to railway wheeled vehicles. Proposed brake comprises brake line connected with air control valve with spare tank and main braking cylinder. Piston of said main braking cylinder is coupled via rod and two-arm lever with brake shoe control lever gearing. Piston rod is furnished with lengthwise axial valve with plunger spring-loaded by expansion spring at one of its end sides. Plunger is shaped to truncated cone interacting with thrust displacing in vertical plane of braking cylinder, said thrust being fitted on rod wall through lengthwise slot. Axial channel is communicated via flexible pipeline with that feeding compressed air to braking cylinder under-piston space via check valve.

EFFECT: ruled out spontaneous motion in depletion of brake.

4 dwg

FIELD: transport.

SUBSTANCE: invention relates to railway transport, particularly, to freight train brake systems. Proposed method comprises emergent braking of train front, simultaneous injection of command of emergency braking to last car actuators from engine driver cabin and receiving response about execution of said instruction. Note here that last car brake line compressed air power is converted into electrical power. Said electrical power is fed to actuators in response to command to solenoid valve for it to decrease air pressure in brake line.

EFFECT: higher and expanded operating performances.

10 cl, 5 dwg

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