Actuator with push rod for compact modules with disc brake support and lock lever that can thrust against resilient stop

FIELD: transport.

SUBSTANCE: invention relates to railway transport, particularly, to railway vehicles brakes. This disc brake drive comprises disc brake support with both collet levers are connected from one end with brakes shoes and, on opposite side, with wear regulator. Wear regulator length is adjusted by control mechanism depending on brake force regulator lift height, this regulator acting on wear regulator actuator with the help of control system link. Regulator with thrust section is fitted along with free running mechanism in wear regulator case and stressed at initial position which does not require adjustment relative to case thrust by return spring. Said thrust include resilient element arranged in direction of impact.

EFFECT: decreased wear of disc brake.

10 cl, 8 dwg

 

The invention relates to a disk brake of a rail vehicle with a caliper disk brake mechanism, both collet lever of which one end is connected with the brake pads, on the other hand - with the regulator of wear, and the length of the slider wear is controlled by the control mechanism depending on the lifting height of the braking force regulator, which acts on the control element of the regulator wear with traction control system, wherein the regulating member is mounted together with the freewheel mechanism in the controller casing wear and feels the load in the initial position, requiring no adjustment, together with the stop element against the stop plate of the housing, at least one element with a return spring, in accordance with the restrictive part of paragraph 1.

In compact modules with a caliper disk brake mechanism for railway vehicles the wear of the friction linings of the brake pads and discs brake mechanism is automatically compensated by the lengthening or shortening of the actuating mechanism with the push or pull rod. Lengthening or shortening of the actuating mechanism is performed through a screw gear in the form of a system of "screw - nut". In order to provide more control�ovcu in a single operation, the thread is made with a very large step. So the thread is not self-locking. At the time, while one workpiece screw gear is held without the possibility of rotation, for example a nut, another detail of helical gears, for example, the screw can be rotated. Through regulatory mechanism mounting the lever is rotated through the mechanism of free running (for example, the freewheel mechanism with sleeve), which, in turn, thus rotates the screw or nut actuating mechanism of the push rod, the length of this actuator, for example, increases. The adjustment operation ends if the setting lever hits the stop in the housing of the actuating mechanism, or if the enforcement mechanism, for example, if the disk brake pads installed, there is an axial force that regulates the mechanism of actuating mechanism can no longer overcome. Such a regulatory mechanism, for example, described in patent EP 0732247 B1.

In the actuator with the push rod shown in Fig.2 patent EP 0732247 B1, the nut is locked against rotation in the bracket, and a screw mounted rotatably in the guide tube located in the housing of the actuating mechanism. To adjust the setting lever is actuated using at�IMEI rod with a spherical head, which is included in the spherical socket of the adjusting lever. Through the mechanism of free running with the clutch pressed in the installation of the lever, the screw may rotate. The freewheel mechanism with a spiral spring is slipping in the direction in which the overrunning clutch is not transmitting torque. If when you unlock the brake push rod is again ceases to press on the installation lever with return spring, he again returns to the original position in which it strikes the fixed stop in the housing of actuating mechanism. The freewheel mechanism with sleeve rotates in the direction in which the overrunning clutch is not transmitting torque, wherein the screw is locked twisted spring from joint rotation.

In the patent EP 0699846 B1 also describes a disk brake mechanism for railway vehicles with the caliper disk brake mechanism and controller of wear. As described in the patent embodiment, the implementation as an Executive mechanism with push rod control element is applied with a regulating nut with external gear (position 61 in Fig.5 and 6). In this regulatory bushing pressed into the freewheel mechanism with sleeve. Into engagement with the regulating sleeve includes a toothed segment �Olesa, through which the lever can be rotated governing the sleeve against the force of the return spring. The nut is captured by a freewheel mechanism with sleeve, and as a result, the length of the actuating mechanism of the push rod is increased. A screw is installed in the bracket actuating mechanism without the possibility of rotation. Return spring rotates the regulating sleeve and, thereby, also the segment of a gear wheel to its original position, wherein the segment gear hits the fixed stop on the housing of actuating mechanism.

When applying the actuator from the pressure rod rotation, for example, screw in the transmission of "screw - nut" in the actuator with the push rod in the direction of shortening is prevented by means of a freewheel mechanism with a spiral spring that is installed between the screw and the housing of actuating mechanism. This freewheel mechanism with a spiral spring forms, in addition to the freewheel mechanism regulating element, an additional or second freewheel mechanism. By means of a freewheel mechanism with a spiral spring, the screw is held in its position, when the control element is returned in a reverse direction by the force of its return spring into its initial position, i.e. when braking on Executive �echanism is a large pressing force, and as a result, the screw has a large torque. If such a freewheel mechanism with a spiral spring is transmitted torque, it experiences an elastic deformation which, on the one hand, is the result of stretching of the spring wire and, on the other hand, the result of pulling the coils on the connected parts, such as screws and the housing of actuating mechanism. In extreme conditions under the influence of external vibrations may increase the elastic strain, resulting in locally under some of the turns of friction is reduced, and thus a greater number of turns involved in the transmission of torque. If under the action of the load, the freewheel mechanism with a spiral spring is too badly deformed, i.e., stretched in the transverse direction, the torque acting in the transfer of "screw - nut", should be partially or completely block using the freewheel mechanism with sleeve regulating element, if the control element is in its starting position at the stop of the housing of actuating mechanism. In this case we can not exclude damage to the freewheel mechanism with sleeve regulating element and, therefore, the functions of the regulator of wear.

Object of the invention, in contrast, is to prevent�'it congestion control wear in a disc brake mechanism of the above type.

Overload freewheel mechanism regulating element can be prevented if the emphasis for regulatory element located in its original position contains at least one elastic element, stretchable in the direction of impact. In this case, you can compensate for the blow when too much torque.

The advantage of this scheme is that the freewheel mechanism regulating element is better protected from overloads that may occur in extreme conditions of high vibration. In addition, requirements to accuracy of manufacturing additional or second overrunning clutch, made of, for example, in the form of a freewheel mechanism with a spiral spring, can be reduced, since in this case it may be stronger to deform at high loads, which is beneficial to the cost.

Control element moves to its original position, requiring no adjustment, in which he tests the load from the element with return spring, for example, in the inoperative position of the brake or clamping position of the brakes, if there is no need for additional adjustment knob wear.

Through the measures outlined in the following paragraphs, possible preferred embodiments of and improvements of the invention.

Especially preferably pre-tensioned by at least one elastic element, wherein the pretensioning force of the elastic element is greater than the force of at least one return spring acting on the control element against impact.

When a large elastic deformation of the spiral spring mechanism the freewheel with a spiral spring is pre-tensioned elastic element, for example a compression spring, is under great pressure. Moment acting on the regulating element, and means on the freewheel mechanism with sleeve, limited by time, which is introduced by means of a force exerted by an elastic element, for example, the tension force of the spring.

In the housing of the actuating mechanism as the elastic element is preferably at least one pre-tensioned spring compression so that the regulating element it was used, if it is rotated to its original position by the force of the element return spring. Because the force pre-tension pre-tensioned compression springs more force of the return spring ensures a certain initial position of the regulating element. On the other hand, the pretensioning force of at least one elastic element �now so large, that moment acting on the freewheel mechanism regulating element, if at least one elastic element is experiencing the load of the regulating element becomes smaller than the torque that can be set by the freewheel mechanism regulating element.

For this reason, preferably, the elastically deformed, at least one elastic element if the force exerted by the regulating element, is greater than the preset value of the maximum force, which is otherwise essentially elastic deformation of at least one elastic element does not occur.

It is preferable to set at least one compression spring in the recess of the housing of the actuating mechanism, and there pre-stretch it from both ends, and at least one compression spring is in contact with the regulating element through the hard part, which is installed in the recess of the housing is movable.

In particular, at least one elastic element, i.e. preferably a compression spring is retained within a hollow screw which is screwed from the outside into the through hole of the housing of actuating mechanism. Then this elastic gripper is a simple method additionally includes using the�to epatica in the existing regulator of wear moreover, in the case of the Executive mechanism of the controller of wear of the threaded hole, and a hollow screw with pre-tensioned by a compression spring and the bracket screwed into a threaded hole.

In addition to the emphasis that is designed to bring the regulating member to its original position and performed together with one elastic element, in the housing of the actuating mechanism of the regulator wear is an additional focus, of which strikes a regulatory element having the resistant section, if the regulator wear is set to the maximum position.

The invention is illustrated by drawings, on which:

Fig.1 is a top view of a disk brake of a rail vehicle with a single actuator with a push rod as a regulator of wear in accordance with a preferred embodiment of the invention;

Fig.2 - caliper disk brake mechanism in the context of Fig.1;

Fig.3 is a cross-sectional view of the actuating mechanism with a push rod disc brake mechanism of Fig.1;

Fig.4 is a cross-sectional view of the actuating mechanism with the push rod along the line IV-IV of Fig.3, which shows a regulating member mounted in the housing of the actuating mechanism together with the overrunning clutch with the bushing�th, in the initial position;

Fig.5 - control element of Fig.4, released from its initial position under load;

Fig.6 - fragment shown in Fig.5, on an enlarged scale;

Fig.7 - control element of Fig.4, in the position corresponding to the maximum adjustment of the actuating mechanism with a push rod of Fig.3;

Fig.8 is another embodiment of the actuating mechanism with a push rod in cross section.

Fig.1 and Fig.2 shows a disk brake mechanism 100, in particular, for the wheelsets of rail vehicles with the 7 disc caliper brake mechanism with eccentric drive, both of antlers of the lever 6, 8 are connected at their ends with the brake pads 15 and in the middle pane, with brake pressure regulator 14. Disk 1 brake mechanism is shown only partially in the form of an axial disk.

On one of the brake box 2 are connected in one provided by the hospital connection 10 by means of a bolt 9 both cheeks collet lever with double walls 6 of 7 disc caliper brake mechanism rotatably around the axis of rotation. Located on the other side of the collet lever 8 is connected at the connection 10 by means of a bolt 9 to the brake box 2 rotatably, wherein the bolt 9 is located on the brake box 2 rotatably �district to the axis of rotation parallel to the axis of rotation and supports passing eccentrically parallel to the axis of the protrusions 11 of the bolt, on which the collet lever 8.

From the bolt 9 departs pivot arm 12, the end of which a connecting rod cylinder, hydraulic brake actuator, as the body 13 for discharging force of the brake force controller 14. Both lever collet 6 and 8 at their one ends are connected with the brake pads 15 which can be pressed on disk 1 of the brake mechanism, and the other ends are connected to connecting their regulator wear 16, made of, in particular, in the form of actuating mechanism with the push rod can rotate in the joints 17, 18, 19 and 20. The actuator with the push rod, i.e., the housing is provided for the connection places of the supports that are located, respectively, between the two cheeks 4 and 5 collet levers 6 and 8. These places further supports are also described as the first or second housing 21, 22 of the controller of wear.

Upon impact of the working environment, for example, in the pneumatic brake force controller 14, the body 13 to the PTO rotates the pivot arm 12, due to the eccentric arrangement of the protrusions 11 of the collet bolt lever 8 is rotated around its junction 20 to the actuator from the push rod towards the brake pads 15 on disc 1 of the brake mechanism. Design and principle of operation the eccentric device for tensioning the soup�Orta 7 disc brake mechanism complies with the principle, which is described in the already mentioned document EP 0732247 A2. After the collet lever 8 is pressed the brake pad 15 to the disk 1 brake mechanism, collet lever 8 begins to turn around the connections 18 to the brake Shoe 15, and above the junction 20, the push rod and the connection 19 of the collet lever 6 is rotated around the connections 10 to clamp your brake pads 15 to the disc 1, the brake mechanism.

The actuator with the push rod, respectively, increases its length depending on the wear of the brake pads 15. For this set to the control element 24 in the form of the adjusting lever, which is mounted on the collet lever 6 of the first housing 21 of the regulator wear with the possibility of rotation around the longitudinal axis 25 of the actuating mechanism with a push rod. Made in the form of trunnion thrust section 23 of the regulating element 24 returns to its original position by the return spring 26 resting in front of the first housing 21 of the regulator wear and against the stop plate 37, shown in Fig.3-8.

As shown in Fig.3, the screw thread 27 that is located coaxially to the longitudinal axis 25 is blocked from turning by means of a pre-stretched gearing 53 without the possibility of rotation and is held axially in place on�ora 22 without the possibility of displacement. Opposite him, on the first body 21 of the slider wear is rotatably adjusting nut 31 screwed on the screw thread 27. The adjusting nut 31 can be connected with the first housing 21 of the regulator wear single pass through swivel coupling with the twisted spring 28 or the freewheel mechanism with a spiral spring 29 without the possibility of rotation. On the other hand, the adjusting nut 31 is actuated through the mechanism 38 freewheel with the plug by means of a regulating element 24 in the form of the adjusting lever in the direction to extend the actuator from the push rod. The basic design and principle of operation of Executive mechanisms with the push rod of this type with helical gear and two single-acting rotary couplings, i.e. the mechanisms of free running, known in the art, and therefore not necessary to describe in detail. But there may be also the regulators wear a different type, for example, actuating mechanism with a pull rod, wherein the main thing is that he had one control element 24 in the form of the adjusting lever.

In shown in Fig.3 embodiment, the screw thread 27 is installed without the possibility of rotation, and an adjusting nut 31 on the contrary, with the possibility of rotation in the housing 21, 22. If you experience �rawaudio torque coil spring 28 is supported by a nut 31 directly on the housing 21 of the actuating mechanism, ie supports in place. The control element 24 in the form of the adjusting lever mechanism 38 freewheel sleeve, you can turn a nut 31 threaded into the actuator with the push rod for wear adjustment in the direction of elongation. However, it is also possible execution, for example in accordance with EP 0732247 A2, in which a screw 27 threaded to rotate by means of a regulating element 24 in the form of the adjusting lever and the adjusting nut 31 is installed without the possibility of rotation.

Between the two cheeks 4 and 5, the collet lever 6 passes the rod 32 of the control system, rear side of which is of a round form in a booster cushion is pressed against the free end of the regulating member 24 in the form of the adjusting lever. Thus, the rod 32 of the control system is connected via the connection 33 with the regulatory element 24, however, in Fig.2 control element 24 is not shown. In the middle zone 32 of the control system to prevent collisions with other nodes, in particular, with the brake force controller 14, a recess from the outer side of the caliper disk brake mechanism. Front, also the rounded end of the tie rod 32 of the control system are placed in a booster cushion (not shown) pivot arm 35, as shown in Fig.2. Average area dvuplechego pivot arm 3 is placed in the swivel seat 36 with the possibility of rotation and has a free shoulder 35A. The principle of operation of the rotary lever 35 with the adjacent structural elements described in the document EP 0732247 A2.

The free end 35A of the rotary lever 35 is installed to form the device a dead course 44, as seen in Fig.2, a disk brake mechanism at a distance s from the lever 45. The lever 45 is in the form of elongation of the rotary shoulder 12. The distance s corresponds to a path, which passes the end of the lever 45 in the absence of a pressing force on both brake pads 15 to the disk 1 of the brake mechanism, when released disk brake mechanism with the proper free travel. Hold the brake lever 45 hits directly on the shoulder 35A of the rotary lever 35.

During the braking process, based on, for example, that when wear of the brake pads is just too big free wheeling disc brake mechanism, first overcome excess free lifting lever 45 with the continuation of the movement to achieve the clamping of the brake transmits the rotation to the shoulder 35A by rotation of the pivot arm 35, and traction control system 32 is shifted in the direction of the regulatory element 24 in the form of the adjusting lever, and operate the actuator with the push rod. Disk brake front end traction systems� management 32 thus can be connected via the connection 46, covering the pivot arm 35, with the body 13 for discharging the braking forces of the brake force controller 14.

In accordance with another variant of execution of the collet levers on the caliper disk brake mechanism may be pivotally connected in the middle on the actuator with the push rod, which is driven by means of the regulating element 24 in the form of the adjusting lever in the direction of shortening of the actuating mechanism with a push rod. The actuator with the push rod may be of any type, however, it must be, as already mentioned, the adjusting lever. The holder of the caliper disk brake mechanism for a stationary node, ultimately, on the frame of the vehicle or the bogie, can be installed on a different connection than the connection 10, the design of the module of the caliper disk brake mechanism may if necessary be equipped with a brake box. Also the clamping device 7 disc caliper brake mechanism may be different one of many known methods, for example, in the form of a cylinder of a hydraulic brake actuator connected to the collet levers 6, 8 directly or via a lever mechanism.

In addition, the length of the actuating mechanism with the push rod can set�to train with the help of control mechanism depending on the lifting height of the regulator of brake forces which with a lever 32 of the control system acts on the control element 24 in the form of the adjusting lever actuating mechanism with a push rod. As shown in Fig.3-Fig.8, the control element 24 with the mechanism 38 freewheel with sleeve arranged in the housing of the actuating mechanism, i.e., in the housing 21 of the actuating mechanism with a push rod and tests a load in the initial position, in which adjustment is not required, with the stop element in the form of pins 23 against the stop plate 37 in the housing 21 of the controller of wear, i.e. in the lid 21, the return spring 26. This situation is shown in particular in Fig.4, in which the control element 24 is in its original position under the action of load from the spring.

The stop 37 is in its original position regulating member 24 includes at least one elastic element 39, stretchable in the direction of impact, preferably a compression spring. The compression spring is pre-stretched, and the force of its pre-tension is greater than the force of the return spring 26, which is testing the load of the regulating member 24 in the direction of the stop 37. In the housing 21 of the controller of wear, i.e. in the cover 21A of the elastic member 39 is mounted so that the control element 24 is used on it, if it is under the force of the return spring 26 povorachivaet�Xia in its original position. Since the pretensioning force of pre-strained elastic element 39 is greater than the force of the return spring 26, is provided a certain initial position of the regulating element 24.

In particular, the compression spring 39 is placed, for example, in a cylindrical recess 40 in the housing 21 of the controller of wear, i.e. in the cover 21A of the actuating mechanism with a push rod, and there is pre-tensioned from both ends, and the elastic member 39 presses on the setting lever 24 via the pressure piece 41, which is placed in the recess 40 and can be moved in the direction of focusing, as shown in Fig.4 and Fig.6. Push the part 41 is locked at the output of the recess 40, for example, by a spring retaining ring 42, which is mounted in the recess 40 of the radial inner annular grooves in the lid 21 a, and thus provide initial compression of the elastic element 39 in the form of compression springs. In other words, push the part 41 by means of pre-tensioned compression spring presses on the axis located in the recess 40 the emphasis, which is formed by a spring retaining ring 42. From Fig.4 it follows that the presence of the cover 21 and makes it easy to mount the elastic member 39, the pressure piece 41, and a return spring 26.

The return spring 26, here pre�respectfully conical coil spring, holds, in addition, control element 24 to its original position. Meanwhile, the regulatory element 24 adjacent to the pressure parts 41 which is positioned in the recess 40, formed, for example, in the form of a blind hole in the housing 21 of the regulator wear with the possibility of displacement and can be moved against a pre-compressed elastic element 39.

As shown in Fig.4, 5 and 7, except the stop 37, the restraint control element 24 in the initial position, with the elastic element 39, in place of the support, i.e. the cap 21 and provided additional stop 43 with thrust area 42 in the form of axle, which rests against the adjusting piece 24 under the influence of the return spring 26 when the actuator with the push rod set at its maximum setting. This situation is shown in Fig.7.

When a large elastic deformation of the twisted spring 28 of the freewheel mechanism with a spiral spring 29 of the elastic element 39 becomes overloaded, as shown in Fig.5 and Fig.6. Moment acting on the control element 24, and hence on the mechanism 38 freewheel sleeve in this case is limited to the moment, i.e. a force that acts on the mechanism 38 freewheel by means of an elastic element 39. Then, in the case of elastic deformation of the elastic element 39, as shown in Fig.6, lever detail 41 add a little�is located in the recess 40, i.e. in the bore, and rises with a snap ring 42, which in the initial state, forms an axial stop for the pressure parts 41.

If, in addition, the freewheel mechanism with a spiral spring 29 as a result of elastic deformation allows a certain rotation of the nut with pipe thread 31 in the direction of shortening, the adjusting lever 24 can adjust the tension against the force of compression spring, compression detail 41 moves linearly (see Fig.6). The freewheel mechanism with sleeve 38 is loaded only from the moment, which is the result of the tension force of the elastic element 39 and the distance of its line of action from the axis of rotation of the adjusting nut 31, which is located along the longitudinal axis 25.

In accordance with another shown in Fig.8 a variant of the invention, the compression spring 39 and clamp the workpiece 41 is held within a hollow screw 51, which is screwed from the outside in made in the form of a threaded hole through hole 52 in the housing 21. Thus, a simple way to install elastic stop 37 in the existing enforcement mechanism with a push rod 16. In other respects, the construction and principle of operation of the elastic stop 37 remain as described in the above embodiment. Finally, in this variant� execution according to Fig.8 there is no cover 21 a, which has in the embodiment according to Fig.4-Fig.6.

In accordance with another, not shown here is a variant of the invention, the elastic member 39 may be formed not as a compression spring, and like any other elastic element. In particular, it can be made in the form of conical springs, in the form of elastomer located, i.e. installed separately or connected to the housing 21 or the location on the support vulcanized.

The elastic member may also be made in the form of forming integrally with the housing 21, which due to the special geometric shape has a higher elasticity than the adjacent to the housing 21. In addition, in this case, higher flexibility, i.e. the elasticity, is not because the material has less rigidity, and the fact that the stop 37 has a special geometric shape and has a lower rigidity than the zones bordering the housing 21.

1. Disc brake (100) of a rail vehicle, with a support plate (7) disk brake mechanism, both collet lever (6, 8) of which one end is connected with the brake pads (15), and on the other hand - with the regulator of wear (16), and length of the controller of wear (16) is controlled by the control mechanism depending on the lifting height, etc�RA braking force (14), which affects the control element (24) of the regulator of wear (16) with a lever (32) of the control system, and the adjusting piece (24) with thrust portion (23) is installed together with a mechanism (38) freewheel in the housing (21) controller of wear (16) and loaded in the initial position, do not require adjustment from the stop (37) of the housing (21) through at least one return spring (26), characterized in that the stop (37) contains in the direction of impact, at least one elastic element (39).

2. The mechanism according to claim 1, characterized in that it contains pre-stretched, at least one elastic element (39), wherein the pretensioning force of the elastic element (39) is greater than the force of at least one return spring (26) acting on the regulating element (24) against the stop (37).

3. The mechanism according to claim 2, characterized in that the at least one elastic element (39) is capable of elastic deformation when the force acting on it by means of the regulating element (24) is greater than the preset value of the maximum force, which is otherwise essentially elastic deformation of at least one elastic element (39) does not occur.

4. The mechanism according to claim 2 or 3, characterized in that the elastic element (39) is made in the form of at least od�Oh pre-tensioned compression springs.

5. The mechanism according to claim 4, characterized in that the at least one specified compression spring mounted in a recess (40) of the housing (21) controller of wear (16) and pre-tensioned from both ends, and at least one specified compression spring in contact with the regulating element (24) via a pressure piece (41) which is located in the recess (40) is movable.

6. A mechanism according to any one of claims. 1-3, characterized in that the at least one elastic element (39) is fixed to the inside of the hollow screw (51), which is screwed from the outside into the through hole (52) of the housing (21).

7. A mechanism according to any one of claims. 1-3, characterized in that the control element (24) is in its home position, requiring no adjustment in the inoperative position of the brake or clamping position of the brakes, if there is no need for additional adjustment of the regulator of wear (16).

8. A mechanism according to any one of claims. 1-3, characterized in that the element of the return spring (26) comprises at least one compression spring.

9. The mechanism according to claim 8, characterized in that the at least one specified compression spring made in the form of conical springs.

10. A mechanism according to any one of claims. 1-3, characterized in that on the housing (21) is an additional stop (43) for regulating element (24), which hits the adjusting piece (24), having�second resistant portion (49), while the regulator of wear (16) is set to the maximum position.



 

Same patents:

FIELD: transport.

SUBSTANCE: invention relates to transport machine building, particularly, to disc brakes. The disk braking mechanism includes support, clamping device, two adjusting screws, regulating device and cylindrical gear wheel segment located on brake lever and passing in direction of its turning. The clamping device has brake lever and is located in support of disk braking mechanism. Two adjusting screws are located in parallel and independently from each other with possibility to be moved in axial direction by means of clamping device. The regulating device is positioned in support of disk braking mechanism, made capable to be actuated by brake lever and to compensate for change of air gap between brake pad and brake disk which change is associated with wear. This compensation is performed by means of adjusting screw axial displacement. To implement regulation the cylindrical gear wheel segment is engaged with gear with end teeth which gear is in working connection with adjusting screw. The gear is nonturnably fixed on driving screw installed with possibility of rotation at the centre between adjusting screws which driving screw provides possibility to actuate adjusting screw via reducing gear. The cylindrical gear wheel segment is monolithically connected with brake lever made as moulded piece.

EFFECT: improved technical characteristics of device and simplification of its manufacturing.

3 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: invention refers to an adjustment device for a disk brake mechanism. The adjustment device (1) is intended to control wear of brake pads (23) and pneumatically controlled disk brake mechanism (20) with a brake disk (20). The adjustment device (1) is actuated by a rotating lever of a clamping device. The clamping device can be inserted into an adjustment screw (25) of the disk brake mechanism (20). The adjustment device (1) comprises a connection ring (8) for coupling with a bush (14) made from resilient material which is engaged with the adjustment screw (25). A blocking unit is installed between the adjustment screw (25) and the adjustment device (1) and forms a limiter in the tangential direction in relation to the direction of rotation for the adjustment screw (25).

EFFECT: limitation of return rotation of the adjustment screw is provided.

6 cl, 13 dwg

FIELD: transport.

SUBSTANCE: invention relates to machine building, particularly, to disc brakes. Air controlled disc brake comprises support, brake cylinder and self-booster. Brake support comprises brake shoes arranged on clamp side and counteraction side. Brake cylinder can be loaded with compressed air to generate braking force and to act on clamp for clamping the brake shoe. Said clamp comprises rotary brake lever. Brake shoe on clamp side can displace both parallel with brake disc rotational axis and with brake disc friction surface. Self-booster features boost factor selected so that brake automatically releases after braking. Said factor is smaller than or equals 2.2.

EFFECT: higher reliability, safe and faultless design.

13 cl, 5 dwg

FIELD: transport.

SUBSTANCE: set of invention relates to automotive industry, particularly, to disc brakes. Adjustment device comprises connecting sleeve. Connecting sleeve consists of the sleeve and connecting insert to be fitted axially therein with geometrical closure, and disc brake. Pneumatic disc brake comprises adjustment device with connecting sleeve.

EFFECT: better operating performances, compact and strong device.

8 cl, 5 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Device for control over air-operated disc brake lining and brake disc wear comprises clamp arranged to be actuated by rotary lever. Pressure device can be fitted in disk brake setscrew and mounted at disk brake mechanism by means of thrust ring. Thrust bearing is arranged axially on one side of drive ring while bearing ramp clutch with free running function is arranged on opposite side. Said clutch comprises bearing, drive ring arranged on one axle between thrust bearing and clutch bearings ion drive side, and coupling ring on power takeoff side. Taper bush is arranged between said coupling ring and cylindrical spring sleeve. Torque-dependent clutch with retaining section is fitted on axle between said taper bush and spring sleeve. Air operated disc brake incorporated abode described adjustment device.

EFFECT: precise adjustment, perfected manual return mechanism.

9 cl, 6 dwg

FIELD: transport.

SUBSTANCE: adjustment device intended for compensate for brake-shoe lining and air-operated disk brake disk is activated by rotary lever. Pressure device can be fitted in disk brake setscrew and mounted at disk brake mechanism by means of thrust ring. Axial bearing is fitted axially on driven ring side while coupling with ball ramp with free running function. Said coupling comprises balls, driven sleeve located on drive side between axial bearing and its balls and clutch ring arranged on power takeoff side. Tape coupling is arranged between said clutch ring and cylindrical spring guide sleeve. Said clutch ring forms turn working angle (αA) confined by at least one thrust.

EFFECT: compact design, ruled out clutch ring slip.

8 cl

FIELD: machine building.

SUBSTANCE: adjustment device for tuning to wear of brake pads and brake disk of pneumatic disk brake is brought into action with pressure device by means of a rotating lever. Pressure device has the possibility of being introduced to an adjustment screw of disk brake. Axial bearing is installed along the axis on the side of a drive ring, on the opposite end of which there installed is a ball coupling with a ramp for balls with free travel function. The above coupling with ramp includes balls, drive sleeve located on the drive side along the axis between axial bearing and its balls, and coupling ring located on power takeoff side. Conical coupling is located between coupling ring located on power takeoff side and guide sleeve of spring for cylindrical spring. Conical coupling has coupling ring located on power takeoff side and conical sleeve connected to guide sleeve. Clamping balls are located between coupling ring and conical sleeve.

EFFECT: creation of a compact design and improvement of operating reliability of the device.

10 cl, 6 dwg

FIELD: transport.

SUBSTANCE: invention relates to rolling stock brake systems. Disc brake comprises friction unit. Friction unit is composed of radial double-row thrust bearing with medium ring making the brake disc rigidly fitted on mounted axle while two thrust rings make linings. Said linings are pressed to medium ring by levers coupled with brake cylinder. Outer surface of medium ring and inner surfaces of thrust rings have taper grooves to accommodate the balls.

EFFECT: reduced thermal load and wear of disc brake friction pair.

4 dwg

FIELD: transport.

SUBSTANCE: 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.

EFFECT: higher operating performances.

12 cl, 7 dwg

Disk brake // 2331804

FIELD: engines and pumps.

SUBSTANCE: disk brake comprises a housing with a cramp enveloping the disk brake, a leader coupled with the brake lever, two blocks with friction linings and a nut set up to reciprocate. The leader coupled with the brake lever is furnished with an additional opposite-direction threaded section. The nut is coupled with the leader additional section connected to the brake lever. The movable block is fixed on the nut. The cramp is arranged on the housing to move parallel to the disk rotation axis. The housing is made up of two segments rigidly interconnected and enveloping the brake disk. Note that every segment is furnished with a hole, corresponding to the shape of blocks with linings, to accommodate the latter to move parallel to the disk rotation axis. The leader coupled with the brake lever is made up of a cylinder and a shaft with a larger and smaller diameter opposite-direction outer threads. The space between the cylinder with the thread and the shaft with the opposite thread direction accommodates an inner thread nut coupled with the leader shaft linked with the brake lever, its cylinder being in contact with the cramp inner thread.

EFFECT: longer life, higher efficiency and lower steel intensity of the brake.

5 cl, 1 dwg

FIELD: transport.

SUBSTANCE: disc brake comprises disc and support. When actuated by brake lever, said support thrusts brake-shoe lining arranged at holder against brake disc. Brake lever and brake-shoe lining are articulated by hinge. Brake lever and brake-shoe lining are electrically isolated.

EFFECT: ruled out feed of inverse current from rail to car body.

16 cl, 7 dwg

Clamp brake // 2492373

FIELD: transport.

SUBSTANCE: clamp brake is mounted at vehicle comprising body and wheel with brake surface to braking force to be applied to said wheel. Clamp brake comprises brake shoe, brake shoe holder, main clamping body, two support pins and drive. Support pins hold said holder at main clamp body to allow its displacement toward brake surface and therefrom. Drive allows pressing brake shoe to wheel brake surface by aforesaid holder. Said drive comprises diaphragm, drive pressure chamber, piston and connected gear. The latter comprises screws and screw bores made in said piston to receive screws to be screwed in through holder to attach the piston thereto.

EFFECT: efficient conversion of fluid pressure into brake shoe pressing force, stable braking force.

10 cl, 5 dwg

FIELD: transport.

SUBSTANCE: invention relates to machine building, particularly, to combine brake cylinders. Combined brake cylinder comprises cylinder of working braking mechanism, an active working brake, driven by working fluid displaced by piston and braking mechanism cylinder with spring energy accumulator, a passive parking brake. Piston of aforesaid braking mechanism cylinder with spring energy accumulator and rod of cylinder of working braking mechanism piston are aligned. In case piston stroke in aforesaid braking mechanism cylinder with spring energy accumulator increases power transfer ratio increases as well. Rail mounted vehicle disc type braking mechanism support unit incorporates said combined braking cylinder.

EFFECT: compact design, maximised force of braking.

25 cl, 15 dwg

FIELD: transport.

SUBSTANCE: invention relates to rolling stock brake systems. Disc brake comprises friction unit. Friction unit is composed of radial double-row thrust bearing with medium ring making the brake disc rigidly fitted on mounted axle while two thrust rings make linings. Said linings are pressed to medium ring by levers coupled with brake cylinder. Outer surface of medium ring and inner surfaces of thrust rings have taper grooves to accommodate the balls.

EFFECT: reduced thermal load and wear of disc brake friction pair.

4 dwg

FIELD: transport.

SUBSTANCE: proposed device comprises body, brake support, brake support levers, system of bearings and axial bearing. Levers are arranged on body outer surfaces directed in opposite directions to support eccentric shaft. Every lever may be driven by eccentric shaft crank. System of bearings is arranged between body and brake support lever. Eccentric shaft crank arranged at shaft end to extend from said body to rotate therein. Revolving eccentric shaft makes crack moving eccentrically relative to body to drive brake support lever. Axial bearing transfers axial forces from brake support lever to body. Axial bearing is located in zone of crank, between brake support lever and body, or part secured thereon. Axial force flow is directed from brake support lever directly to axial bearing and, therefrom, to body, or part secured thereon.

EFFECT: decreased friction.

6 cl, 3 dwg

FIELD: transport.

SUBSTANCE: 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.

EFFECT: higher operating performances.

12 cl, 7 dwg

Vehicle clamp brake // 2429393

FIELD: transport.

SUBSTANCE: brake clamp comprises first braking lever arranged opposite vehicle wheel first friction surface and second braking lever arranged opposite second friction surface. Moving brake shoe is mounted on first braking lever to apply brake force to first friction surface. Brake clamp houses pistons to move moving brake shoe in response to membrane extension and guide frame to guide pistons in direction perpendicular to first friction surface. Moving brake shoe applies uniform brake force to vehicle wheel together with brake shoe secured to second braking lever.

EFFECT: uniform pressure on revolving wheel surface.

13 cl, 12 dwg

FIELD: machine building.

SUBSTANCE: 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.

EFFECT: simplification of design, raised maintainability and service life of mechanism of vehicle dick brake drive.

1 dwg

Modular disk brake // 2298712

FIELD: mechanical engineering, namely, disk brakes, having floating or sliding support.

SUBSTANCE: disk brake contains body for positioning braking mechanism on it and support, detachably connected to body. Disk brake is formed of various modules. Body acts as supporting means for fastening other modules. One of modules is formed by support together with at least three guiding fingers. Lid of braking mechanism is strongly connected to body. Seal is positioned and compressed during assembly between lid and body.

EFFECT: increased technical characteristics of disk brake.

18 cl, 7 dwg

Brake mechanism // 2292497

FIELD: mechanical engineering.

SUBSTANCE: brake mechanism comprises two pivotally interconnected levers and two opposite brake blocks secured to the levers for permitting periodical interaction with the rotating disk. The brake mechanism is provided with air-operated cylinder mounted at one of the ends of the lever so that its housing is secured to one of the levers and the rod is secured to the other lever. The brake blocks are mounted at the second end of the levers whose pivot joint is interposed between brake blocks and air-operated cylinder. One of the brake blocks is made of a current-carrying bus spring-loaded with respect to the lever for permitting connection with a power source. The levers are spring-loaded one with respect to the other by means of an extension springs interposed between the pivot joint of levers and air-operated cylinder. The rotating disk is made of two members whose bases are rigidly interconnected. One of the members is mounted for permitting contact with the current-carrying bus, is made of a conducting material, and is provided with a member for releasing voltage .

EFFECT: expanded functional capabilities.

2 dwg

FIELD: transport.

SUBSTANCE: invention relates to railway transport, particular to brake cylinders with mechanisms for adjustment of clearances between brake shoes and rolling stock wheel rolling surfaces. Cylinder with automatic regulator of clearances comprises case, covers defining the pressure chamber accommodating spring-loaded piston and barometric chamber with rod. Rod extends through pressure chamber cover bore to behind the piston in barometric chamber and is composed by thrust screw of automatic regulator leverage. Spring-loaded nuts are fitted on regulator leverage screw as well as ear to transfer piston force to leverage. Rod end extending from cylinder rear cover has means to secure said cylinder to parking brake.

EFFECT: decreased number of levers in said leverage.

1 dwg

Up!