Air operated disc brake. RU patent 2520181.

IPC classes for russian patent Air operated disc brake. RU patent 2520181. (RU 2520181):

F16D65/14 - Actuating mechanisms for brakes; Means for initiating operation at a predetermined position (brake control systems, parts thereof B60T)

Another patents in same IPC classes:

Air operated disc brake / 2514538
Invention relates to disc brake. Propose brake comprises brake external clamp (1), brake shoe linings (2) to be pressed against brake disc, one being driven by brake lever (5) that turns about clamp cam pin. Brake rod (6) abuts on the clamp from end side, said rod being connected from opposite side to lining (2) from clamp side or to guide plate (9) connected therewith. It comprises two spaced apart pressure rods (4) located in one direction connected to clamp (1) and lining (2) or to guide plate (9), and self-booster. Clamp (1) has hemisphere-shaped bearing seats (13, 15) accommodating plain bearing elements (14, 16) fitted therein for brake lever (5) and pressure rod (4) to thrust by their side bent off lining (2) against clamp (1). Brake rod (6) is coupled with lining (2) and latch.

Disc brake with calliper for automobiles of industrial application, as well as calliper and actuating mechanism of such brake / 2509929
Disc brake includes a calliper, an actuating mechanism and a fastener to fix an actuating mechanism on the calliper. Functional holes of the calliper and the actuating mechanism serve for connection of the actuating mechanism to a clamping device. The fastener is designed so that the second flange surface in the area located between the second functional hole and the fastener can be bent or deformed against elastic restoring force, and the restoring force can bring the second flange surface in individual sections to the pre-tension state in the direction to the first flange surface. The disc brake calliper, in which the first flange surface between the fastener and the functional holes is not flat. The actuating mechanism of the brake, in which the second flange surface between the fastener and the functional holes is not flat.

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Disk braking mechanism with self-boosting, and brake pad / 2493450
Disk braking mechanism with self-boosting includes a clamp of disk braking mechanism, which is retained on a stationary support of disk braking mechanism, with brake pads, a self-boosting device and a brake plunger having the possibility of being brought into action by means of a brake lever, with a clamping device and with an adjustment device to adjust wear rate of brake pad and/or brake disk. Self-boosting device has a pressure plunger that adjoins the brake pad through an expanding support on end surface on the clamp side and that is located with its end zone facing the brake pad in a guide plate movably retained in the braking mechanism support. Expanding support in non-operating position of the self-boosting device is enclosed with sealing structure. Brake pad includes a cavity having a ramp outline, and pressure disk of the brake pad or another disk include a collar on the side facing from the friction pad, with a receiving element having the possibility of retaining pressure plunger.

Combined cylinder with force transfer mechanism that features variable transfer ratio / 2486084
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Method of controlling lifting machine brake (versions) and lifting machine / 2460912
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Hydraulic brake with self-amplification / 2454338
Invention relates to machine building and may be used in automotive brake systems. Proposed device comprises moving coupling member. The latter is filled with hydraulic fluid to press brake clamp to braking surface. Said moving coupling member is connected with brake actuator to create pressure force introduced via coupling member into brake clamp. Brake clamp is connected via connectors with pressure pickup arranged on vehicle body and comprises thrust cylinder filled with hydraulic fluid interacting with thrust piston. Said cylinder is communicated hydraulic lines with brake actuator. Said cylinder is divided by thrust piston into thrust chamber and thrust discharge chamber. There are adjusting appliances to set braking force subject to preset magnitude by adjusting pressure difference between hydraulic pressure in thrust chamber and hydraulic pressure in thrust discharge chamber.

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Disk brake and disk-stabilising element / 2360159
Disk brake comprises disk-stabilising elements, which are installed between every brake disk and hub or part joined to hub, without fixation and are arranged and installed with the possibility of deviation in axial direction in process of braking and creation of force that provides for axial return of brake disks in case of brakes release. Disk-stabilising element may have rectangular shape mainly, with two long sides and two short sides, by means of which short sides are installed in gaps between teeth or splines in brake disk. Disk-stabilising element may have two free lower ends, which are engaged with top of two adjacent splines or teeth of braking disk, and one upper bent end, which is engaged with base between two adjacent splines or teeth of braking disk. Disk-stabilising element may include helical spring, which is installed in braking disk gap, therefore both ends of helical spring pass radially from helical spring in opposite directions and end with brackets. Disk-stabilising element may be made of metal sheet having shape of "П"-shaped double-sided contour element with two branches, which are joined by base.

Block brake and its cam / 2364765
Invention relates to cam-driven block brakes and their components. Cam (38) has one or several ledges (62, 64) with multiple sections (62A-C, 64A-C) that feature various profiles in axial cross section. Varying the cam profile allows producing the cam with the extreme outer ends or apexes of the ledges with length exceeding that of common cams, the mechanical strength being preserved. Increased travel of brake shoes allows using brake shoe lining of increased thickness.

Drive mechanism of vehicle disk brake / 2398979
Drive mechanism of disk brake of vehicle includes bracket consisting of case and cover, brake drive shaft and screw gear installed in bracket, and also lever mounted on external side of bracket on brake drive shaft. A mechanism of automatic control of the brake including a driving link is installed inside the lever. The driving link of automatic control of the brake is arranged coaxially to the brake drive shaft and is kinematically coupled with the bracket. A movable in circumferential direction packing is positioned between the bracket and a controller of the drive lever so, that internal cavities of the bracket and the lever form a common cavity sealed from the side opposite to the bracket.

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Electromechanical brake / 2424136
Invention relates to machine building, particularly, to braking equipment and may be used at transport facilities. Proposed electromechanical brake comprises brae shoes, case accommodating cup with spring coupled with motor. Said cup houses one or several springs arranged to get unclamped when acted on by electromagnetically controlled latches. Cup allows controlling its translation and is coupled with motor via toothed-surface tie rod, gear wheel coupled with tie rod, electromagnetic coupling and self-braking screw gear. Note here that latch control electromagnets, electromagnetic coupling and motor are connected with control unit connected, in its turn, with brake pickup and that indicating force exerted by cup on shoes.

Compact disk brake block for railway vehicle / 2431067
Proposed disk brake block comprises two flanges with appropriate friction linings to allow friction against disk. Said flanges are articulated on ends of two levers driven by brake force source that comprises first piston displacing along first axis A. Brake block comprises also assembly to automatically control the gap between friction linings and said disk. First piston transmits braking force to pusher arranged inside aforesaid source to increase and transmit said force via said assembly and, along second axis B perpendicular to said first axis A, to ends of said levers perpendicular to those where said flanges are articulated with.

Hydraulically drive braking system with protection function / 2454337
Invention relates to machine building and may be used in automotive brake systems. Proposed device comprises guided connecting element, braking cylinder, braking piston, hydraulic pipeline and emergent braking means. Said guiding connecting element serves to press brake clamp lining against braking surface. Braking piston is coupled with connecting element. Hydraulic pipeline is communicated with braking cylinder. Emergent braking means driven by fluid medium and manually serve to communicate braking cylinder with hydraulic pipeline or pipelines. Emergent braking means comprise braking valve, mechanical and hydraulic transducers.

FIELD: transport.

SUBSTANCE: invention relates to disc brake. Proposed brake comprises brake beam calliper (1) surrounding the brake disc (2) and brake shoe-linings (3) to be pressed against disc (2) both sides, one can be actuated on clamp side by the cam of clamping device brake lever (5) turning about the pin. Besides, this brake comprises the self-reinforcing device that features self-reinforcement factor selected so that after braking this brake releases automatically. Compressed air brake cylinder push-rod can act on lever (5). Said lever (5) thrusts on at least one ball-like support element (10) in calliper (1) that makes the cam pivot pin. Said element (10) abuts on support ball (9) located in direction of push-rod action above support element (10) and positioned in brake plunger (6) connected with lining (3) located on clamp side. Pressure plungers (7) are arranged on both sides of plunger (6) and spaced apart. One end of said pressure plunger rests on clamp (1) while opposite end thrusts via support ball (16) on lining (3). Pressure plunger (7) is secured in guide plate (4) arranged to displace to the axis of brake disc (2) in the brake mechanism shield (8).

EFFECT: optimised design, weight and sizes, higher efficiency.

9 cl, 4 dwg

The invention relates to the pneumatic disc brakes according to the restrictive part of paragraph 1 of the claims.

Such pneumatic disc brakes known, for example, from the EP 0553105 B1 and EP 1230491 B1.

This formed on the end of the eccentric, based on the bracket of disk brake brake lever due subject to transfer high actuation forces made a very solid in the form of forged steel parts or casting of spheroidal cast iron.

Due to the high ratio of the instrument, for example, i=L1: e=15,6:1 (L1 = length of the lever arms, e = eccentricity), which is derived from the ratio of the attached brake force and efforts established the brake cylinder, which again implies correspondingly large angle of rotation of the brake lever, there are correspondingly high friction losses in the support of an eccentric. To reduce apply half of the bearing, which cover support eccentric.

This lever has such a form that the transmission from the rests of rolling bearings bearing eccentric not bending moments, all of which could lead to distortions in the bracket disk brake mechanism.

However, the implementation of such linear guides is only possible with higher costs for manufacturing with correspondingly high cost of manufacture.

In addition, such a support roller, of course, relatively sensitive to damage that is not consistent with optimized service life.

That is why the document EP 1230491 B1 proposed to support the brake lever on the bracket disk brake mechanism to apply exclusively bearings, which along with low cost manufacturing are particularly high reliability.

However, friction coefficients applied, maintenance-free bearings are several times higher than the coefficient of resistance to rolling bearings, which naturally affects the provision of braking effort, which should be created in the brake cylinder.

Because of the relatively large diameter of the bearing follows the distance from the axis of rotation of the eccentric to the point of application of force to the brake pad, located from the side of the clamp that turns out to additional bending moments acting on the brake lever. To keep the resulting deformation of brake lever at a low level, he is very solid, though completely impossible to avoid these deformations and following from this increased requirement in the brake cylinder.

In General, known for the corresponding kind of disc brakes, in particular, do not meet the requirements in part the necessary constructive space available weight and efficiency.

The objective of the invention is the further development of the disk brake of a generic type that is optimized in terms of its constructive space, its weight, its efficiency and its cost of production.

This problem can be solved with the help of disc brakes with signs of paragraph 1 of the claims.

Thanks provided according to the invention of the device of the self, which to date used exclusively driven by Electromechanical means disc brakes, reduces the need for power brake cylinder, which leads to significant reduction of constructive space while continuing working characteristic of the brake.

Already at relatively low coefficients of the self possibly significant decrease of overall dimensions brake cylinder. At the same time, zamovlennya using sizing wedges or ramp is chosen so that the maximum possible coefficient of friction brake pads ensures reliable auto brake is released.

Differently than in disc brakes with an electric motor, the motor should not be used to clamp brakes, and also for release.

The decrease constructive size possible, in particular, due to the lower course of which, for example, decreased from 65 to 24 mm Equally necessary energy to actuate reduced to one third of the current energy to actuate.

This allows you to have significantly smaller items bearings brake lever, resulting in decreased also bending moments acting on the brake lever.

Along with that desired and provided by the invention of the effect is also achieved noticeable reduction of friction in the bearings, which, first, is achieved due to the smaller and, secondly, thanks to minimized the necessary corner of turn of brake lever, leading to increased mechanical efficiency.

Given the decrease angle stems from the reduction ratio of the lever, which, as mentioned, is the disc brake according to the technical level of 15.6:1, while it is thanks to the invention lies in the range from 7:1 to 10:1, i.e. significantly less.

Using of the invention, thus possibly reducing constructive length of the brake cylinder, as well as savings in weight, which corresponds related to these requirements, which in General should fuel economy. In addition, due to the reduced bending stresses in the brake lever it can be calculated optimized in terms of weight, and brake lever corresponds only with the brake piston acting in the plane of the axis tantricheskiy about the axis of rotation of the disc brakes, which built the two arranged to do this on both sides operating with one hand on the handle of disk brake mechanism and on the other hand on the brake pad, located on the part of pressure, pressure plungers that her reaction brought directly into the bracket brake mechanism.

Brake lever is made mostly in the form of forgings without treatment, associated with the formation of chips, and can be formed in relatively thin-walled forged parts with stamped signs nests bearing, in the form of so-called exact forged parts, or parts, stamped from sheet. Fundamentally, it is possible to manufacture brake lever of spheroidal cast iron, with the subsequent processing associated with the formation of chips.

According to other aspects of the invention brake lever is equipped with at least partially going around the bent edge, which at small weight is achieved increased stiffness. Additionally can be arranged stiffening of large pipes and the like.

To increase the strength liner brake lever can be hardened or improved.

Installation of bearing pockets, in the form of spherical nests, equipped reduce friction and/or wear coated or lined cups for the bearings, connected with the metal.

To drive device adjustment in the brake lever can be stamped timing circuit suitable for engagement with the driving wheel Adjuster, or may be fixed, for example, by welding in the form of separate details.

Other preferred options run characterized by signs of dependent claims.

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

figure 1 - part of the proposed according to the invention disc brakes, view from above in the section,

figure 2 - perspective view of another part of the disk brake

figure 3 - brake lever disc brakes, perspective view,

figure 4 - a longitudinal section of the brake lever on the line IV-IV on the figure 3.

In figures 1 and 2 is a self-reinforcing disk brake with fixed brake shield bracket 1 brake mechanism, a brake cover plate 3, placed side down, and one is not shown brake pad, located from the side of the counter, which can snuggle up to the brake disc 2.

For pressing of brake pads provided by clamping device in the form of a brake and brake lever 5 plunger 6, with which the brake pad 3 by pressing able to move axially with respect to an axis of rotation of the brake disc 2.

While the brake cylinder 18 (figure 2), which can be fed compressed air through the attached pusher 19 acts on the brake lever 5, and brake lever 5 in the area of impact of the pusher has 19 reference sphere nest 20, which is adapted to the formed convex mechanical side of the pusher 19.

Brake lever 5 can rotate in relation to the brake piston 6 axis eccentric, which is formed by two spherical support elements 10, which on one hand are a spherical nests 12 brake lever 5 and on the other hand in spherical projection 11 jacks staples disk brake mechanism, with ledges 11 spherical form nests almost respectively emphasis.

Between the supporting elements 10, forming both thrust bearing or intended spherical nests 13 in brake lever is provided by the bulge 12, adjusted to the reference 9 ball, which is supporting ball, 9 which on the other hand pinned on the brake piston 6.

This eccentricity brake lever 5 indicates the distance of the center of spherical nests 13 or supporting elements 10 to convexity 12 or inside the anchor 9 ball, and supporting ball in relation to the reference sphere socket is above 20 supporting elements 10.

According to the invention further provides for the device of the self, which has a sliding bearings, which are designed accordingly push the plunger 7 who are engaged with the adjusting device 23 for due to depreciation adjustment brake linings 3.

Push plungers 7 of its addressed to brake pad 3 terminal area attached to the guide plate 4, which can move in the direction of pressure in the brake shield 8.

When braking, i.e. when the brake pad 3 use the brake lever 5 is pressing to brake disk 2, there are tangential forces that brake pad 3 is shifted in the direction of rotation of the brake disc 2, when you change the distance brake linings 3 to pressure plunger 7.

When you release the brake brake pad 3 use is not shown recoil is returned in the so-called unclenched its original position in which supporting ball 16 is practically free of functions in deepening the brake pads 3.

In figures 3 and 4 shows an example of executing the brake lever 5, which is formed in the form of details, formed of the sheet.

You can see that the brake lever is roughly trapezoidal lateral surface, on the wide side which boosted both spherical nests 13, while on the opposite end of the field formed with the same direction of the reference sphere nest 20.

Between the two spherical nests 13 in the direction of the reference sphere nests 20 on the distance to them is having the form of a spherical nests bulge 12, namely, with its concave inner side opposite the inside spherical formations nests 13 and the reference sphere socket 20.

To stiffen the brake lever 5 it has partially passing around the edge of the folded edge of 22, which extends towards the protrusion of convexity 12, and not only in the tail region of the reference sphere nests 20. Further to increase the bending stiffness between the bulge 12 and bearing spherical nest is located 20 deepening 21.

1. Pneumatic brake disk containing covering brake disc (2) bracket (1) disk brake mechanism, and made with the possibility of pressing to brake disk (2) on both sides of the brake pads (3), one side of the clip made with the possibility of activating using the rotary axis Cam brake lever (5) of the clamping device, with a pusher (19) loaded with compressed air brake cylinder (18) made with the possibility of impact on the brake lever (5)and the device of the self, which is the ratio of the self chosen so that after braking brake is released automatically, and brake lever (5) is based on at least installed in the bracket (1) disk brake mechanism spherical reference item (10), forming the axis of rotation of the eccentric, and adjacent to the bearing ball (9), located in the direction of the impact of the pusher above the reference item (10), and which is positioned in brake plunger (6), United with brake lining (3), located from the side of the clamp, and on both sides of the brake of a plunger (6) in parallel on distance from each other is, respectively, one pressure plunger (7), which one end is based on the bracket brake mechanism, and other end - through supporting ball (16) the brake cover plate (3), wherein push the plunger (7) is fixed into the guide bracket (4), installed with the possibility of displacement in axial direction brake disc (2) the Board (8) the brake mechanism.

2. Pneumatic disc brake according to claim 1, characterized in that it contains two of the reference item (10), between which is supporting ball (9).

3. Pneumatic disc brake according to claim 1 or 2, characterized in that the installation of support structures (10) brake lever (5) has spherical socket (13), and for the installation of the base of the ball (9) bulge (12).

4. Pneumatic disc brake according to claim 1 or 2, wherein the supporting elements (10) are based on projections (11) spherical slots of the bracket (1) disk brake mechanism.

5. Pneumatic disc brake according to claim 1 or 2, wherein the pusher (19) with the face parties established in the reference sphere Jack (20) brake lever (5).

6. Pneumatic disc brake according to claim 1 or 2, wherein the ratio of the rotating lever i = L1 (the distance between the centers of spherical nests 13 to reference ball socket 20): e (eccentricity = the distance of the center of spherical nests 13 to convexity 12) lies in the range from 7:1 to 10:1, preferably 7,5:1.

7. Pneumatic disc brake according to claim 1 or 2, wherein the brake lever (5) equipped with at least partially passing through the circle bent edge (22).

8. Pneumatic disc brake according to claim 1 or 2, wherein rotating the lever (5) made in the form of parts, stamped from sheet, or casting.

9. Pneumatic disc brake according to claim 1 or 2, wherein rotating the lever (5) equipped with at least one recess (21) to stiffen.