Clasp brake and spreader bar

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly, to clasp brakes. The propose clasp brake incorporates a caliper enveloping one or more brake plates, a hub or a part linked up wit the hub. Spreader bars are arranged between the brake disk and hub or the part linked up wit the hub. The spreader bars are arranged to prevent contact between brake plate spline end faces and the hub spline end faces, or the part jointed to the hub, at whatever radial shift of the brake plate relative to the hub or the part jointed thereto. At least, one part of the spreader bar features such sizes and rigidity relative to the brake plate, hub or part splines that, at whatever radial shifts of the brake plate to the hub or part jointed thereto, all radial forces are transmitted from the brake plate to the hub or the part jointed to it only via, at least, one part of the spreader bar. The sizes are selected so as to provide a contact between the brake plate spline end faces those of the hub or the part jointed thereto in rotary engagement between the brake plate and hub or the part jointed thereto to transmit rotary motion in braking.

EFFECT: damping radial impacts or radial shifts between brake plate and hub, particularly, between end faces of appropriate splines.

13 cl, 9 dwg

 

The present invention relates to disc brakes and spacer elements used in such disc brakes. Disc brakes are usually either rigidly fixed to the caliper, or a sliding caliper. The present invention relates to disc brakes with fixed or floating caliper and one or more brake discs, at least one of which is moving. The present invention applies to disc brakes in which the brake pads are designed to impact only on a limited part of the full circle and disc brakes in which the brake pads are designed to impact on almost a full circle along the brake discs. The above-mentioned type brakes also referred to as disk-type brakes.

Moving the brake discs are usually placed on the sleeve, the hub or the like, via a gear, spline, or other connection, or any other method that provides a fixed connection in the direction of rotation and sliding connection in the axial direction. Bushing, hub or the like mounted on the wheel axis and is connected with it. Depending on the type and manufacture of brake the brake disc can be mounted on the sleeve or, in other words, is connected to the hub, which is connected with the axis of the wheel or brake disc can is to be placed directly on the hub without the use of any sleeve. In this description for convenience usually uses the term "hub", although it does not make any restrictions, as it can also be used bushing, clutch, etc. To ensure slip must be some clearance between the teeth, slots or the like on the inner periphery of the brake disc and teeth, slots or the like on the outer periphery of the hub or sleeve.

Brake having one or more sliding disk, you may encounter problems as in the released position, and braking and the brake is released. In the released position may cause noise, distortion and/or failure in the braking. When braking and releasing of the brakes can cause problems with the proper separation of brake pads and brake discs.

Because of the clearance required between the disc and the hub to provide relative sliding movement and to remove the lock function of the slip due to dirt and corrosion, probably the appearance of noise in the released position, as the gap between the slots or the like in General provides a large radial and rotational displacement of the brake disc relative to the hub, or the like, compared with the risk of instability drive a thumping sound may be a consequence of the fact that the axis of the wheel and, thus, the hub rotates, and the brake discs are "freely" available on the hub, through the m which the noise is generated by the movement of the disc relative to the hub. Noise may also be caused by driving on rough surfaces, which leads to the movement of the vehicle strokes.

This problem is often solved due to the fact that between the hub and the brake disc set of springs or the like to provide radial forces on the disc to stabilize and prevent noise and grinding.

If the disk is warped, there is a risk of locking in skewed positions in the released position. Without proper separation of brake discs and brake pads after braking may occur excessive wear of brake pads and can occur braking, when the brake disc or discs remain in contact with the brake pads in the released position.

In addition, in some circumstances, such spring elements have the disadvantage that they are limited free axial movement of the brake disc to such an extent that in the released position of the disk brake is undesirable braking.

Apart from the noise of other problems in disc brakes is heating. When braking discs become very hot. The heat generated during braking is transmitted to the hub and, thus, also to the bearings located in the hub, in accordance with the greater part of the heat is conducted to the bearings when the brake is in the fired position, which, of course, takes place over a longer period of time than when the brake is used for the purpose. The bearings and lubricant used in the bearings are very sensitive to heat. Therefore, the heat that is present at a certain temperature level for a long time, essentially reduces the service life of the bearings in the hub. Their replacement will significantly increase maintenance costs.

Heat transfer mainly occurs through the splined connection between the disks and the hub or the part connected to the hub. A greater number of points of contact between the splines or teeth of the brake disc and the hub or the part connected to the hub, on the one hand, or a smaller air gap, i.e. the gap between the surfaces of the splines or teeth, on the other hand, lead to a larger amount of heat to the bearings. In addition, if the gap is splined connection varies greatly due to incorrect translational or rotational alignment of the brake disc relative to the hub or the part connected to the hub, the bearings also passed a larger amount of heat.

In other words, the amount of air space or gap in the splined connection between the brake disc and the hub is critical to reduce PR is Vedemosti heat from the brake disc to the hub or details, connected to the hub.

Normal clearances are in the range of from 0.2 to 1.0 mm

The above-mentioned problems, in particular, the problem of incomplete release, resolved by stabilizing the drive elements, which are known, for example, from the publication WO 2006/002932 A1. Disclosed in this publication stabilizing disk elements provide the function of abstraction by creating efforts that support axial discharge of the brake disc when the brake is released. To provide reliable and adequate function of abstraction, to compensate for any manufacturing tolerances and to reduce the sensitivity of the site to dirt and corrosion, and is designed such stabilizing the drive element, so that in him, in addition, there is a gap between the more rigid parts and the parts of the elements and the hub and/or disk.

However, this gap does permit radial displacement of the brake disc relative to the hub or the part connected to the hub, to such an extent that does not hinder the formation of noise. Compared with the possibility of vibration of the brake disc relative to the hub noise is mainly obtained as a result of the repeated collision of the brake disc to the hub when driving on rough roads, through which the ends of the splines of the brake disc really come into contact with the ends of the splines of the hub or children who do, connected to the hub.

The relevant part of the roll drive elements according to the prior art are stiff enough to counteract the forces of inertia of the brake disc when driving on rough roads, or have a special design, aimed mainly at ensuring the function of abstraction, and between the slots of the disk and the splines of the hub not posted any equivalent hard part or parts of the stabilizing disk element to assume the impact instead of the ends of these slots.

The present invention is directed to solving the above problems occurring in the disk brakes.

In particular, the invention relates to a disk brake having a caliper, surrounding one or more brake discs, with at least one brake disc is placed slidable on the hub or the part connected to the hub through vzaimostsepljaemost slots as the brake disc and the hub or the part connected to the hub, and between the brake disc and the hub or the part connected to the hub, placed spacers, while the spacer elements are located and arranged to prevent contact between the ends of the splines of the brake disc and the ends of the splines of the hub or part, with is United with the hub, any radial displacement of the brake disc relative to the hub or the part connected to the hub.

According to the invention the spacer elements arranged to prevent contact of the end face when the rotational engagement of the brake disc and the hub or the part connected to the hub for transmitting torque braking, while the spacer elements do not allow any contact ends in all radial directions and after releasing the brakes.

In other words, solely and separately for the released condition of the brake spacer elements according to the invention always prevent, restrict or damping radial movement of the brake disc relative to the hub so that the ends of the splines of the brake disc and hub never come in contact.

For this purpose, at least a portion of the spacer part has, at least, such a rigidity that the radial influence of the brake disc are damped to avoid undesirable contact between the ends.

The rigidity of the spacer elements are selected in such a way that has always been provided resistance to the forces of inertia of the brake disc, although these parts are more elastic in comparison with the rigidity of the slots of the disk and hub directly.

According to the invention the spacer elements t is the train only to provide the function of damping effects, or for the specified function can serve only part of the spacer elements, while the spacer elements can, however, perform other functions, as will be described later.

Spacers are separated from each other around the circumference of the brake disk or hub to provide essentially the same functional independence of the rotational position of the brake disc. Preferably three spacer element parts are separated from each other at equal intervals around the brake disc, each spacer element is formed in such a way as to ensure that the circumference is equal to the gaps between the splines of the brake disc and the splines of the hub or the part connected to the hub, thus rotationally aligning the brake disc relative to the hub or the part connected to the hub.

The gap will be at least essentially so that the gap between the ends exceeds a preset value that is greater than the clearance between the spacer elements or damping parts of the spacer elements and the brake disc or hub. Preferably the spacer elements are made and are arranged so that the gap on both sides of the slots, that is, between the ends of the splines of the brake disc and the ends of the splines of the hub is the same.

Recommended clearance at the ends of the slots exceeds the gap between the houses is Mimi elements and the brake disc or wheel hub by 50% preferably 70% and most preferably 100%.

According to the invention the spacer elements or parts of the damping spacer elements, at least, is formed so that the contact between them and the brake disc, on the one hand, and between them and the hub, on the other hand, was such that no power is not limited axial sliding of the brake disc. Most preferably the spacer elements or parts of the damping spacer elements are made with the possibility of non-simultaneous contact with the brake disc and the hub or the part connected to the hub.

To avoid any simultaneous contact between the spacer elements and the brake disc or wheel hub, or parts of damping, the gap should be at least 0.1 mm, preferably at least 0.2 mm and most preferably at least 0.3 mm

This made the gap between the parts of the damping spacers or spacer elements and the brake disc or wheel hub, provides reliable cushioning and relaxed axial releasing disk even in the presence of normal manufacturing tolerances in the brake discs and hubs and imperfect rotational center of the brake disc on the hub.

In one embodiment, the spacer element or at least part of the races who priori element may be in the form of helical springs, made from one single wire, which must be placed between the splines of the brake disc and the hub and which preferably passes through the thickness of the brake disk. Helical springs or part helical springs transmit the impact from the perpendicular to the brake disk on its longitudinal axis.

According to another variant implementation of the spacer element is designed in the form of a cylindrical tube, preferably made of steel, which is elastic, for example by means of longitudinal axial section, and transfers the impact perpendicular to the load on its longitudinal axis.

The spacer elements may be made as separate elements, which are used for damping the impact. In a preferred embodiment according to the invention such spacer elements additionally provide other functions, such as disclosed in the publication WO 2006/002932 A1.

One particular feature that could be included in the design of the spacer element part is the creation of a force when sliding the brake disc on the hub, which facilitates axial abstraction of the brake disc when the brake is released. This can be achieved by the specific features of the spacer elements, as they were, for example, described in the publication WO 206/002932 A1. When the disc slips under the application of braking force at least part of the spacer elements elastically deflected in the axial direction, which ensures the application of axial force to the disc to move it back again when the brake is released.

In addition, the spacer elements are preferably made with the possibility of axial sliding with the brake disk when the corresponding brake pad wear. To compensate for wear of the brake pads spacers are formed so that the friction to hold on axis with the hub or the part connected to the hub, so that the spacer elements are deflected in the axial direction, while they remain stationary axis on the hub or the part connected to the hub, if the applied axial force, sufficient to overcome the axial frictional engagement between the spacer elements and the hub or the part connected to the hub, and spacer elements are deflected in the axial direction and slide on the axis on the hub or the part connected to the hub, when the applied axial force sufficient to overcome the frictional engagement between the spacer elements and the hub or the part connected to the hub. Such compensation for wear may be either unilateral or bilateral. The present invention can be is used with both types of wear compensation.

Other features include stabilization of the disk and preventing heat transfer between the brake disc and the hub or the part connected to the hub.

The invention relates not only to the disc brakes with spacer elements, as described above, but also to the spacer elements as such.

Additional objects and advantages of the present invention will be obvious to experts in the art after reading the following detailed description of preferred embodiments of the invention.

Hereinafter the present invention will be described in more detail with reference to the accompanying drawings, on which:

Figure 1 is a view in perspective of one common example of a brake disc mounted slidable on the hub with spacer elements according to the first variant implementation of the present invention;

Figure 2 is a top view of the brake disc and hub with 1;

Figa - view in an enlarged scale of part 2;

Fig.3b - another view in enlarged scale of part 2;

Figs is a view in cross section along the line C-C Figa;

Figa is a perspective view of spacer element according to the second variant of implementation of the present invention;

Fig.4b is a partial top view illustrating the spacer element Figa in its mounted position;

5 is a top view t is masnago disk and hub with spacer elements according to the third variant of implementation of the present invention; and

6 is a view in enlarged scale of part 5.

Used in this description, the terms "axial", "radial", "rotational" etc. refer to the axis of the wheel (not shown)connected to the brake, and the brake disk, the hub, coupling, etc. placed directly or through intermediate parts on the wheel axis.

1 schematically shows a brake disk 1 and the hub 2, and the brake disk 1 is sent slidable on the hub 2. This design can be used in any type of disc brake Assembly, in which at least one brake disc is placed with the opportunity slip.

The brake disc 1 contains directed radially inward of the teeth or slots 3, which vzaimozachety with directed radially outward teeth or slots 4 arranged on the hub 2. Splined engagement provides a rotational force or torque transmission after engagement of the brake disk 1 brake pads (not shown) and at the same time, the axial sliding of the brake disc 1 on the hub 2.

Between the slots 3 of the brake disc 1 and the slots 4 of the hub 2 on the circle are equidistant spacer elements 5 areas of mutual engagement of the brake disk 1 and the hub 2.

Spacers 5 made of a single single spring wire and codereading part 5.1, formed like a coil spring. Spring wire coil spring 5.1 radially and tangentially passes at both ends so that the continuation 5.2 and 5.3 are directed in opposite directions, and one continuation 5.2 abuts against one side of the brake disc 1 and the other continued 5.3 rests on the other side of the brake disc 1.

At the ends of each extension 5.2 and 5.3 ends hook 5.4, which is directed away from the coil springs 5.1 and which passes through the gap between the slots 3 of the brake disc 1 and the slots 4 of the hub 2, respectively.

On Figa and 4b show a second variant implementation of the spacer elements, which is similar to the variant implementation Figure 1-3c.

Shows a variant implementation of the spacer elements 6 also contains a spiral spring section 6.1 and continue 6.2 and 6.3 in each tangential direction, which end with the hooks 6.4 respectively. Hooks 6.4 placed in the grooves 7, which are located in the tops of the slots 3 of the brake disc 1, respectively.

In all embodiments of the invention, the helical spring section 5.1 or 6.1 has a stiffness that takes radial impact away from the brake disk 1, which is the result of driving on rough roads with the brake in the released state.

Through this excluded the contact tor the s 8 slots 3 of the brake disc 1 with the ends 9 of the slots 4 of the hub 2. However, as shown in the drawings, mainly spacer elements 5, 6 does not prevent any rotational engagement of these ends 8 and 9, while braking occurs.

On Figa-3c shows the views in enlarged scale of part 2.

According to the invention the spacer elements 5 and 6 is designed so that the gap S1 between the coil spring parts 5.1 and 6.1 and the top of the slots 3 of the brake disc 1 is always smaller than the gap S2 between the end faces 8 of the slots 3 of the brake disc 1 and the end faces 9 of the slots 4 of the hub 2.

As several spacer elements 5 or 6 are located around the circumference of the zone of mutual engagement or interaction of the brake disk 1 and the hub 2, the gap S2 between all the ends 8 and 9 of the slots 3 and 4 respectively remain essentially equal.

Figure 5 shows the top view of another design of the brake disk 1 and the hub 2, and 6 represents an enlarged portion of Figure 5.

Between the brake disk 1 and the hub 2 are elements 10 stabilization of the disk, which, among other things, provide effort of abstraction for the axial discharge of the brake disk 1 on the hub 2, when not applied no power braking. In addition, the spacer elements 11 are located between the slots 3 of the brake disc 1 and the slots 4 of the hub 2 at equal distances, namely between the two elements 10, stabilizing disks, meet the but.

Taking into account the fact that the damping effects and additional features such as stabilization of the disk and the axial abstraction inherent in one spacer element 5 or 6 according to the options implementation Figure 1-4b, the spacer elements 11 according to Figure 5 provide only the radial damping effect and, therefore, inserted between the brake disk 1 and the hub 2 as additional elements.

As shown in Fig.6, the spacer element 11 consists of passing through the axis of a cylindrical tube with an appropriate stiffness or elasticity. Elasticity is achieved through the incision 12, passing through the axis of the tube.

The gap S2 in this embodiment, is retained by items 10, the stabilizing disk, while the gap S1 formed by the selected dimensions of the cylindrical tube 11.

Spacers 11 can be made with the possibility of axial sliding with the brake disc 1 in accordance with the wear of the brake pads; and, alternatively, they can be made with the possibility of axial fixation relative to the hub 2, and the elements 10, the stabilizing disk made with the possibility of axial sliding with the brake disc 1.

Specialists in the art it will be obvious that the exact form of the spacer elements may vary as long as they comply with the acceptable functions, in particular, damping effects, the same or similar way as described above.

1. Disc brake with caliper, surrounding one or more brake discs, with at least one brake disc is placed slidable on the hub or the part connected to the hub through vzaimostsepljaemost slots as the brake disc and the hub or the part connected to the hub, and between the brake disc and the hub or the part connected to the hub, placed spacers, characterized in that the spacer elements are located and arranged to prevent contact between the ends of the splines of the brake disc and the ends of the splines of the hub or the part connected to the hub, any radial displacement of the brake disc relative to the hub or the part connected to the hub, while maintaining such contact when the rotational engagement of the brake disc and the hub or the part connected to the hub for transmission of torque during braking.

2. Disc brake according to claim 1, characterized in that at least part of the spacer element has such rigidity to damp radial impact away from the brake disk.

3. Disc brake according to claim 1 or 2, characterized in that the spacer elements are designed to ensure that QA is agnosti equal gaps between the splines of the brake disc and the splines of the hub or details, connected to the hub, thus rotationally aligning the brake disc relative to the hub or the part connected to the hub.

4. Disc brake according to claim 1 or 2, characterized in that the spacer elements are located and designed in such a way that the spacer elements or parts of the damping spacer elements are in contact simultaneously with the brake disc and the hub or the part connected to the hub.

5. Disc brake according to claim 4, characterized in that the spacer elements are arranged and configured to provide clearance for the ends of the splines of the brake disc and the ends of the splines of the hub or the part connected to the hub, which exceeds the clearance between the spacer elements or parts of the damping spacer elements and the brake disc or wheel hub or the part connected to the hub.

6. Disc brake according to claim 5, characterized in that the gap between the ends of the splines of the brake disc and the ends of the splines of the hub or the part connected to the hub exceeds the gap between the spacer elements or parts of the damping spacer elements and the brake disc or wheel hub or the part connected to the hub, at 50%, preferably 70% and most preferably 100%.

7. Disc brake according to claim 1 or 2, characterized in that the spacer elements are in the form of coil springs Il is an elastic cylindrical tubes.

8. Disc brake according to claim 7, characterized in that the spacer elements are of at least the thickness of the brake disk.

9. Disc brake according to claim 1 or 2, characterized in that the spacer elements are made with the possibility of creating efforts that facilitate axial removal of the brake disc when the brake is released.

10. Disc brake according to claim 1 or 2, characterized in that the spacer elements are made with the possibility of axial sliding with the brake disc on the hub or the part connected to the hub.

11. The spacer element placed between the brake disc and the hub or the part connected to the hub, and brake disc placed slidable on the hub or the part connected to the hub, through the respective slots, characterized in that at least one part of the spacer element shall be of such dimensions and stiffness relative to the splines of the brake disc and the hub or the part connected to the hub, that at any radial displacement of the brake disc relative to the hub or the part connected to the hub, all radial forces are transmitted from the brake disc to the hub or the part connected to the hub, exclusively through at least one part of the spacer element, the dimensions are selected so that th is would ensure contact between the ends of the splines of the brake disc and the ends of the splines of the hub or details, connected to the hub, when the rotational engagement of the brake disc and the hub or the part connected to the hub for transmission of torque during braking.

12. The spacer element according to claim 11, characterized in that the portion of the spacer element or spacer element has a symmetrical shape of the rotation.

13. The spacer element according to item 12, wherein the portion of the spacer element or spacer element is designed in the form of a coil spring or an elastic cylindrical tube.



 

Same patents:

FIELD: transport.

SUBSTANCE: clasp brake incorporates a caliper with one or more brake-shoe linings surrounding one or more brake disks. One of the brake disks slides on over the central part representing a hub, sleeve or the like part. The said central part is fitted on the wheel axle or the like part. The disks are coupled with the central part with the help of teeth, splines or the like parts so the disks cannot rotate but are fitted to slide on along the axle. The contact parts of the teeth or the like parts of at least one disk and/or of the central part feature an arc-like shape if seen along the wheel axle. The contact parts represent the parts of the teeth surfaces to be engaged with each other with the brake released. The said contact parts of every tooth and/or spline of the said central part feature the arc-like shape with the total arc length exceeding 360°/Z, and preferably larger than 2(360°/Z), where Z is the number of teeth of the disk and central part respectively.

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FIELD: mechanical engineering.

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8 cl, 3 dwg

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FIELD: mechanical engineering.

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Braking device // 2126503

Disk brake // 2269695

FIELD: mechanical engineering.

SUBSTANCE: disk brake comprises support that is rigidly connected to the brake and embraces one or more brake disks, at least one stop plate, and set of braking linings. The brake disks are mounted on the rotating hub without permitting rotation with respect to the hub and for permitting movement in the axial direction with respect to the hub by means of springs for transmitting brake moment from the brake disk to the hub. The braking linings are mounted for permitting movement in the axial direction inside the support that undergoes loading on the brake linings. The support has an opening through which the brake lining can be inserted or removed.

EFFECT: enhanced reliability.

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FIELD: automotive industry; disk brakes.

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FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly, to clasp brakes. The propose clasp brake incorporates a caliper enveloping one or more brake plates, a hub or a part linked up wit the hub. Spreader bars are arranged between the brake disk and hub or the part linked up wit the hub. The spreader bars are arranged to prevent contact between brake plate spline end faces and the hub spline end faces, or the part jointed to the hub, at whatever radial shift of the brake plate relative to the hub or the part jointed thereto. At least, one part of the spreader bar features such sizes and rigidity relative to the brake plate, hub or part splines that, at whatever radial shifts of the brake plate to the hub or part jointed thereto, all radial forces are transmitted from the brake plate to the hub or the part jointed to it only via, at least, one part of the spreader bar. The sizes are selected so as to provide a contact between the brake plate spline end faces those of the hub or the part jointed thereto in rotary engagement between the brake plate and hub or the part jointed thereto to transmit rotary motion in braking.

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13 cl, 9 dwg

FIELD: transport.

SUBSTANCE: in compliance with first version, brake cooling system comprises cylinder with pressurised water-alcohol fluid, electrically driven valve, sprayer and extra pipeline. Extra pipeline comprises cylinder with low-boiling-point fluid, for example, nitrogen, filling neck with check valve and electrically driven valve arranged upstream of pipeline connection nearby sprayer. In compliance with second version, brake cooling system comprises cylinder with pressurised water-alcohol fluid, electrically driven valve, sprayer and extra pipeline. Water is said fluid in cylinder. In compliance with third version, brake cooling system comprises cylinder with pressurised water-alcohol fluid, electrically driven valve, sprayer and extra pipeline. Alcohol is said fluid in cylinder. In compliance with fourth version, system comprises electrically driven valve and sprayer arranged nearby brake disks of every wheel and cylinder with low-boiling-point fluid, for example, nitrogen, filling neck with check valve.

EFFECT: higher efficiency of cooling and safety.

4 cl, 1 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly, to braking systems. Drive assembly comprises central housing, drive input and output elements, braking system, lateral housing and separator of housings. Central housing has lengthwise element and two lateral ends. Drive input and output elements are connected with central housing. Braking system is connected with central housing. Lateral housing is connected with one of lateral ends of central housing to accommodate drive assembly output. Separator of housings is arranged between central housing and lateral housing to make the former longer. Method of facilitating drive universal possibilities consists in increasing braking capacity of the brake by assembling brake system with additional brake disc and making central housing longer so that is accommodates extra brake disc.

EFFECT: possibility to incorporate brake system and drive assembly with different vehicles without notable modification of components.

10 cl, 3 dwg

FIELD: transport.

SUBSTANCE: invention relates to air transport, specifically to electromechanical drives of aircraft brakes. The unit consists of two modules installed on flange fixed on wheel axle. Each of the modules has body, thrust plunger, screw mechanism located in the body, electric motor connected with screw drive reducing gear. In the inside axial cavity of the screw, electric motor with rotor is installed. On one of electric motor shaft ends, wave former of the first stage of double-stage harmonic reducing gear and wave former incorporating separator of the first stage of harmonic reducing gear are placed. The separator is connected with electric motor body and has the first intermediate rotation bodies interacting with separator incorporating rigid wheel, with inner waved surface. Rigid wheel of the second stage has shaft installed coaxially with electric motor rotor which shaft has wave former of the second stage of harmonic reducing gear, with separator connected with electric motor body which separator has the second intermediate rotation bodies. Part of screw surface incorporating harmonic reducing gear second stage wave former has inside waved surface.

EFFECT: decreased unit dimensions, higher unit efficiency and reliability.

4 cl, 4 dwg

FIELD: transport mechanical engineering.

SUBSTANCE: ventilated disk comprises friction ways connected with the bearing hub of the disk through connecting members made of studs distributed over the periphery of the bearing hub of the disk. One end of the stud is provided with a gripping device embedded in the material of the friction way. The opposite end of the stud is made of an insert which slides in axial direction in the material of the bearing hub of the disk. The friction ways and bearing hub of the disk are cast with the use of the common casting rod with studs.

EFFECT: improved performance.

7 cl, 7 dwg

FIELD: mechanical engineering.

SUBSTANCE: disc has assembly bulge for fastening to nave of transportation vehicle wheel and back band connected with bulge and having opposite surfaces of braking to provide interaction with brackets of brake's support to have an breaking effect onto transportation vehicle. At least one braking surface has at least one pair of channels, which have to be reflectively symmetrical to radius of disc. Channels pass in such a manner to embrace the whole thickness of back band, which intends for interaction with brackets. Continuity of each channel is provided along its total length. All four channels of at least one pair of channels pass the route which has at least one straight part and one curved part. Each channel of any pair of channels has at least a part of its route, which is located close to inner edge of back band and is oriented at radial direction mainly. Moreover mentioned channels of at least one pair of channels do not cross each other. All four channels pass the route without being damaged. Any channel passes the route from head or inner end to tail or inner end. The end mentioned is closed with dead edge where side walls of channel connect to each other.

EFFECT: improved efficiency of operation; improved reliability of operation of baking system.

27 cl, 7 dwg

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