Air operated disc brake
SUBSTANCE: 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.
EFFECT: perfected simple design, lower costs, longer life and higher reliability.
7 cl, 4 dwg
The invention relates to a pneumatic disk brake according to the restrictive part of paragraph 1 of the claims.
Such a disc brake with the possibility pneumatic actuation is known, for example from document EP 0553105 B1, and EP 1230491 B1. In the known technical solutions brake lever made on the same end as the Cam rests on the brake calliper as controvery. Due to the functional dependency a relatively large angle of rotation of the brake lever appear relatively high friction losses eccentric bearing. Therefore, to reduce use of the hemisphere of the rolling bearing, protecting around the eccentric bearing. However, the implementation of such linear guides is only possible with considerable cost of their production with correspondingly high production costs. Along with this is the bearing of course is relatively susceptible to damage, which prevents optimal lifetime.
Therefore, the above-mentioned document EP 1230491 B1 proposed to use to install the brake lever on the brake calliper exclusively bearings, different along with low production costs especially great strength. However, the coefficients of friction used it is livemix bearings many times higher than the value of the resistance to rolling bearings, which, of course, affects the production generated by the hydraulic cylinder brake braking force.
Therefore, to optimize pneumatically actuated disc brakes unpublished document DE 102008004806 proposed to equip the disc brake device of the self with the coefficient of the self-chosen so that the brake switches itself off after braking. This event provides the opportunity to make a move cylinder hydraulic brake actuator, whereby with the aid of the attached plunger can be actuated brake lever, substantially shorter, resulting in the reduction of the angle of rotation of the brake lever and, as a result, decreases the coefficient of friction slewing bearings. When the brake lever is attached to a push rod that moves upon actuation of the brake lever in the axial direction of the brake disc and attached clamping of the clamp pad brake pads to the brake disk.
For a bearing pads brake pads as well as for the implementation of the device of the self, when viewed in the direction of the circumference of the brake disc on both sides of the stock brakes are respectively push rods installed with one hand on the brake calliper, and on the other the hand connected with pad brake Shoe. In General, push rods are used when interacting with podregulirovan device for the correction due to the wear of the gap.
In the known document EP 1230491 B1 to implement the sliding bearing of the brake lever on the brake calliper provided socket bearing in the form of hemispheres, inside which are the bearing elements in the form of beads, resting, on the other hand, the brake lever. To handle nests bearing should perform the brake calliper of two parts and screw both halves of the bracket disk brake mechanism after processing.
However, this screw connection is potentially vulnerable place as the screws must accept the forces acting on the brake calliper. Perform end-to-end and threaded holes as well as the manufacturing of screws, is a factor that adversely affect the production costs of special importance, particularly when it comes to series-produced disc brakes used in large quantities products.
Therefore, the basis of the invention lies task is to improve disk brake of known type so that it is easier and more cost-effective to manufacture and to increase the duration of its operational reliability.
the same problem is solved by disc brakes, characterized by signs of paragraph 1 of the claims.
This constructive design allows you to choose the dimensions of the slots of the bearing in the form of hemispheres is so small that a suitable tool for processing, you can enter in all the brake calliper. The tools for processing, usually spindles for processing, you must enter obliquely to the axis of rotation of the brake disc. To bear the corresponding angle more limits for accurate processing it is advisable to run the back side of the bracket of the brake mechanism so that no loss of strength to provide sufficient clearance for spindles for processing.
Thanks designed in the shape of hemispheres nests bearing using a suitable tool, you can choose largely open angular position of the axis of rotation of the spindle for processing. It is particularly preferable above all when it is impossible concentric conducting spindle for processing through the back side of the bracket of the brake mechanism, because otherwise the corresponding holes unacceptably reduce its strength.
The device of the self that includes a guide plate fixed on plate brake pads, as well as the wedge system, cause the increased size of the niche Thor is oz, compared with the disk brake device without the self what contributes to the introduction of a tool for processing inside the bracket of the brake mechanism.
Instead entered obliquely spindle for processing processing nests bearing in the form of hemispheres you can also head angular milling cutter, so that the possible axial treatment slots of the bearing.
Although the size of the niche bracket disc brake mechanism, as indicated, increased due to application of the device of the self, the entire structural size of the disk brake is reduced when viewed in the direction of the axis of the brake disc, now due to the reduced stroke of the cylinder of the hydraulic brake, and a reduced angle of rotation of the brake lever.
According to a preferred variant implementation of the invention push rods, rod brakes, and podregulirovan device, including the device synchronization for synchronous podregulirovan wear push rods with the bottom sheet covering the mounting opening bracket brake mechanism,and the guide plate are combined into one structural unit.
The push rod so connected with pad brake pads, that there is a possibility for a slight rotary movement of the adjusting rod in accordance with emerging during actuation of the brake system offsets perimeter pads brake pads.
Required when servicing simple razedinennosti connection rod of the brake lining of the brake pads preferably occurs by means of a snap connection, for example, accommodated in the groove of the rod brake spring ring, completely displaced when large tensile effort required to disconnect the connection when replacing brake pads, through the annular inclined ledge in the lining of the brake pads, so both of the structural element stock brake/ plate brake pads are separated.
A groove for receiving a spring ring may be provided instead of placing it in compression rod, also in the lining of the brake pads, in particular in the base plate pads brake pads, while the annular inclined protrusion is provided in the corresponding structural element.
Necessary to disconnect the connection dilatory force much more, preferably many times, of a spring force of a return spring, to prevent unwanted separation of the connection.
Other preferred embodiments of the invention are characterized by the features of dependent claims.
The present invention is illustrated by drawings, which presents the following:
figure 1 - fragment e is ment corresponding to the invention of the disk brake in the top view;
figure 2-4 - section bracket brake mechanism during processing according to the invention.
Figure 1 shows a disk brake with samozrejme fixed on the fixed bracket 8 brake bracket 1 brake, plate 2 brake pads of the clamp and the trigger can be pressed to the brake disk. In the example of execution represented only plate 2 brake pads of the clamp.
To clamp provided with clamping device with rotary lever 5 and the rod 6 of the brake, whereby the cover plate 2 brake pads can move in the axial direction relative to the axis of rotation of the brake disk.
In addition, the device of the self with rethimnou support 10 on bearings with the appropriate pressure rod 4 which engages with podregulirovan device due to wear podregulirovan pads 2 brake pads.
Push rods 4 are fixed to their faces the cover plate 2 brake pads the final part of the guide plate 9, which can move in the bracket 8 of the brake in the direction of the clip.
Each Razina bearing 10 bearing is inserted from the end face into the corresponding push rod 4 ball 12 bearing inside with the other hand in ug is ubienii in the shape of a hemisphere pads 2 brake pads, the side wall of which is made in the form of a rising ramp 11.
During braking, when the cover plate 2 brake pads squeeze the brake lever 5 to the brake disc, there are regional efforts, by means of which the plate 2 brake pad is moved in the direction of rotation of the brake disc to change the distance of the push rod 4. When turning off the brake plate 2 brake pad returns the return spring 7, so to speak, in the unloaded initial position in which the ball 12 of the bearing is practically not functioning, contained within the recessed pads brake pads.
Brake lever 5 is made to rotate around the axis of rotation of the eccentric relative to the shaft 6 of the brake, which is formed by two spherical elements 14 of the bearing, on the one hand on the inside of the hemisphere brake, lever 5, and on the other hand - in the slots 13 of the bearing in the form of hemispheres 13 bracket 1 disk brake mechanism.
Push rods 4, located, when viewed in the direction of the circumference of the brake disc on both sides next to the stem 6 of the brakes, installed on your turned from the pad 2 brake pads front side into the slots 15 of the bearing in the form of hemispheres bracket 1 disk brake mechanism, and on the respective end sides of nimn the x rods 4 preferowan made in the form of a spherical segment element 16 of the sliding bearing, inside the slots 15 of the bearing. Instead priparkovannogo element 16 of the sliding bearing may be provided in a separate spherical element bearings, now located inside accordingly priparkovannogo deepening of the adjusting rod 4, similarly located opposite the bead 12 of the bearing on the plot Rethimno bearings 10 bearings.
Socket 13, 15 of the bearing located on the same surface of the bracket 1 of the brake mechanism, indicated on this site, such as the head bracket is installed preferably manufactured by molding the protrusions, if the bracket 1, the brake mechanism is in the form of a solid element of the casting.
Processing, respectively, in the form of semispherical recesses of the slots 13, 15 of the bearing, as shown in figure 2 and 3, can be realized by means of the tool 17 for processing with the spindle to handle 18, which is directed obliquely from below through the niche 21 of the bracket of the brake mechanism, with the head in the form of a spherical segment, with the help of which you can handle the indentation in the shape of a hemisphere sockets 13, 15 of the bearing.
The spindle 18 for processing in motion by a drive mechanism 19 and he is supported by means of the control element 20 protruding in the recess 21.
If figure 2 shows a top view in section of the brake calliper, what about the figure 3 shows a side view in section. However, in both cases, the spindle 18 to the handle 18 is introduced obliquely, which allows implementation in the form of hemispheres sockets 13, 15 of the bearing.
Another treatment option is shown in figure 4. Here as a tool for processing is provided an angular actuator 22 through which the spindle 18 for processing, you can enter coaxially. In this case, the angular actuator 22 can be entered from below through the niche 21 in the bracket 1 of the brake mechanism.
1. Pneumatic disc brake, contains a spanning disk brake bracket (1) brake lining (2) brake pads made with pressure from two sides to the brake disk, one of which is actuated by the brake lever (5)is made with the possibility of rotation around the axis of the eccentric clamping device to which is attached from the front side of the rod (6) brake attached the other side to the cover plate (2) brake pads of the clamp or connected with it the guide plate (9), two located in the same direction and in the distance the push rod (4), respectively attached to the bracket (1) the brake mechanism and the cover plate (2) brake pads or guide plate (9), and the device of the self, characterized in that the bracket (1) the brake mechanism includes a Jack (13, 15) of the bearing in the form of hemispheres, NR the three which are adjusted to them elements (14, 16) slide bearing through which the brake lever (5) and push rod (4) based its turned from the pad (2) brake pads side of the bracket (1) the brake mechanism, and the spindle brake is connected with the possibility of separation from the lining of the brake pads by means of a snap connection.
2. Pneumatic disc brake according to claim 1, characterized in that the bracket (1) the brake mechanism is made whole.
3. Pneumatic disc brake according to claim 1 or 2, characterized in that the socket (13,15) bearing made in preferowanych ledges.
4. Pneumatic disc brake according to claim 1 or 2, characterized in that the bearing made four slots (13, 15), in particular two - for brake lever (5) and respectively one for push rods (4).
5. Pneumatic disc brake according to claim 1 or 2, characterized in that related to the brake lever (5) elements (14) of the sliding bearing is made in the form of a support balls.
6. Pneumatic disc brake according to claim 1 or 2, characterized in that the elements (16) sliding push rods (4) are fulfilled by providing the spherical shape of the corresponding side of the corresponding push rod (4).
7. Pneumatic disc brake according to claim 1 or 2, characterized in that each element (16) of the bearing pressure is on rod (4) is made of the reference ball.
SUBSTANCE: invention relates to automotive industry. Proposed mechanism comprises support surrounding brake disc and brake linings abutting on brake disc on both sides. One of said linings on clap side can be actuated by clamp rotary lever. Disc brake support flange accommodates brake cylinder secured thereto to receive compressed air. Said cylinder can act on said rotary lever by cylinder rod and has return spring. Cylinder rod is displaced by spring back into free state to abut on the flange or on bottom resting on cover flange. Said flange makes the return spring support. Cover is made of thin-wall sheet of stable-shape metal foil. Concentric hole is made in said cover. In compliance with first version, brake mechanism cylinder has said cover makes form the preassembled assy without cylinder rod. In compliance with second version, brake mechanism cylinder return spring abut on thin-wall cover abuts on brake mechanism disc flange to made its support.
EFFECT: longer life.
17 cl, 5 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to machine building and may be used in crank press brakes. Said brakes serve to absorb energy of press clutch drive part after clutch is disengaged and to retain actuator jointly with drive part in position that corresponds to press slider to position. Brake comprises bearing, drive and pressure plates, pressure plate drive and cover. Drive is composed of modules. Every module comprises slider and end motor with inner and outer ring-like stators. Stators are mounted at press bed to get in magnetic contact with disc rotor. Rotor shaft is engaged via planetary reduction fear and torque converter with slider.
EFFECT: simplified design, accelerated operation.
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: machine building.
SUBSTANCE: annular disc brake includes a rotating disc and at least one disc shoe installed on each side of the rotating disc. Brake shoe or shoes on one side are connected to an axially guided load-carrying element of the brake shoe. The brake has a force transfer mechanism creating enhancement of increase in force between the axially driven element and load-carrying element. The method for increasing gripping force of brake shoe in annular disc brake consists in the fact that the first force is generated synchronously with the brake drive; at that, the first force has the direction that is parallel to rotation axis of the rotating disc. Also, rotating torque is generated using the first force; at that, rotating torque has the rotation centre that coincides with rotation axis of the rotating disc. Besides, the second force is generated using rotating torque; at that, the second force has the direction that is essentially identical to the direction of the first force and is higher than the first force. The second force is used for gripping of brake shoes on opposite sides of the rotating disc.
EFFECT: increasing brake compactness and providing uniform distribution of braking force in a circumferential direction of the rotating disc.
20 cl, 12 dwg
FIELD: mechanical engineering.
SUBSTANCE: modular brake mechanism mounted in the support provided with the port at least in its front side comprises braking lever, front rack that is connected with the braking lever when the brake operates, and at least one stop plate which is mounted on the transverse rack and overlaps the plate for closing the port in the front side of the support. The transverse rack moves by the lever in the plane virtually perpendicular to the plane of the brake disk. The brake mechanism is modular and comprises two or more units. At least one of the units has at least two members. Each of the units can be dismounted through the port in the support.
EFFECT: facilitated dismounting of out-worn units.
6 cl, 7 dwg
FIELD: mechanical engineering; disk brakes.
SUBSTANCE: proposed disk brake contains caliper enclosing brake disk and provided with cavity for mounting brake mechanism. Brake mechanism has support bracket installed inside in port in caliper wall furthest from brake disk. Brake mechanism is provided with adjuster, adjusting shaft and shaft for restoring initial position. Device is used to transmit motion between shafts to adjust and restore initial position. Adjuster is set into operation by pin of lever arranged on brake mechanism lever and is installed in support bracket at assembling.
EFFECT: improved synchronization of adjusting motion between two thrust units of brake mechanism, provision of compactness, facilitated servicing of brake mechanism.
10 cl, 8 dwg
FIELD: automobile production.
SUBSTANCE: 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.
EFFECT: improving reliability owing to reducing negative effects on an actuating mechanism and a disc brake.
16 cl, 8 dwg
SUBSTANCE: disc brake consists of shoe body, shoe friction linings, brake disc, mechanism with two bell cranks and springs, brake air cylinder and pins of said bell cranks. Brake disc is fitted at mounted axle of transport facility. Disc brake comprises friction discs arranged at both sides of friction disc that make, along with shoe friction linings, at least three surfaces of friction. Inner friction discs are composed of segments secured at body axle. Outer friction discs are composed of segment rings secured at brake disc axles with straps coupling said segments by screws. Friction discs comprises extra springs fitted at axles to make clearance over friction surface.
EFFECT: higher efficiency of braking, decreased sizes, simplified design, expanded operating performances.
FIELD: machine building.
SUBSTANCE: automatic slack adjuster includes a casing in which there provided is a hole into which a breaking cam shaft is inserted, a worm gear having the possibility of being engaged with a breaking worm shaft, a drive of a slack adjuster, a lever of the breaking drive and an assembly of one-sided coupling. Assembly of one-sided coupling includes a supporting arm, a supporting bracket attached to the supporting arm without any rotation possibility, a side plate, a gear and a one-sided clutch. The supporting arm has a hole into which a break cam shaft is inserted. The hole in the supporting arm is located coaxially to the hole made in the casing. The sided plate and the gear are coaxially pressed between the supporting arm and the supporting bracket so that rotation of the side plate and the gear about a common axis is provided. One-sided latch is located on the supporting bracket and deflected in radial outside direction from one-sided teeth formed on internal radius of the gear. Teeth of the gear on the outside circumference of the gear of the one-sided coupling are engaged with an adjusting screw that will transfer movement of the gear to the slack adjuster drive.
EFFECT: simpler manufacture of a slack adjuster.
8 cl, 7 dwg
FIELD: machine building.
SUBSTANCE: 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.
EFFECT: improving operating reliability and increasing service life.
24 cl, 1 dwg
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
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.
FIELD: machine building.
SUBSTANCE: proposed device comprises two levers arranged on opposed outer surfaces of casing and system of seals. Brake caliper levers are driven eccentrically by crank. Crank is fitted on eccentric shaft end side. Seal between casing and lever represents tight seal and comprises partially elastic bellow secured to case on one side, and, on opposite side, to brake caliper lever.
EFFECT: improved operating performances.
10 cl, 3 dwg
SUBSTANCE: lifting machine comprises motor to drive lifting machine shaft 14. Machine brake 20 applies braking force to disc 22 coupled with machine shaft 14 to decelerate or stop said shaft. In compliance with one version, brake 20 actuates shifting element 38 to apply shifting pressure to tong-type braking mechanism to apply braking force to disc 22. Brake drive 48 with deformable material displaces to counteract shifting pressure to control adhesion between braking mechanism 32 and disc 22. Controller varies braking force applied to disc 22 to control input force on said deformable material. Position of braking element relative to rotary part is defined using material input signal magnitude.
EFFECT: higher operating performances.
19 cl, 5 dwg
SUBSTANCE: 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.
EFFECT: controlled braking irrespective of actuating force.
18 cl, 2 dwg
SUBSTANCE: 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.
EFFECT: reliable braking.
18 cl, 2 dwg
FIELD: security facilities, blasting.
SUBSTANCE: invention refers to armoured machinery and can be used in chassis of military caterpillar vehicles equipped with fire protection facilities. The chassis of a military caterpillar vehicle contain a frame, a power unit, a power gear including a fan drive with a friction clutch and a cooling system with a fan, and fire protection equipment with an automatic control unit. The fan is secured on a driving hub made with a friction surface. A pressure plate is designed so as to interact with the friction surface of the driving hub. A driven hub is made as a whole with a body of a bearing and is equipped with a cartridge located in its inner cavity and able to rotate around its axis. A chamber forming container is assembled in the cartridge; and an exploder as a source of pneumatic energy is installed in the said container. At that the container is designed with an orifice hole communicating the inner cavity of the container with the chamber and rigidly connected to the driven hub. A feature of electric blasting of the charge of an explosive substance of the exploder is secured to a flange of the container. The said feature is made as a lock with a core. The core is electrically connected with the said automatic control unit, and the lock is equipped with a spring which presses the core to a detonating cap of the exploder.
EFFECT: improvement of fire extinguishing efficiency in a motor-transmission compartment of chassis of a military caterpillar vehicle with hydro mechanic transmission.
SUBSTANCE: 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.
EFFECT: improved technical characteristics of disk brake, elimination of noise and jamming and exclusion of disk incline, by means of its stabilisation with the help of disk-stabilising elements.
44 cl, 42 dwg
SUBSTANCE: 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.
EFFECT: longer life of brake shoe linings.
45 cl, 11 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.
FIELD: machine building.
SUBSTANCE: drive consists of cylinder, of piston installed in cylinder, of fixing device in form of conic bushing with conic insertions arranged inside piston cavity, of un-breaking device in form of an elastic element installed between conic bushing and thrust ring movably positioned on cylinder guide, rigidly tied with cylinder, and of device for retracting piston into initial position. The elastic element of the un-breaking device is made as a compression spring. The thrust ring corresponds to press-on bush with radial orifices. The conic bushing of the fixing device is installed with a minimum clearance relative to end surface made inside the piston; the clearance ensures transfer of force of the compression spring to conic insertions. The conic insertions are movably installed in radial slots of the press-on bush and generate friction force along a cylinder guide deliberately overcoming force of the compression spring.
EFFECT: reduced axial dimensions of drive and expanded functionally of brake drive due to its application in brake systems regardless from pressure value in drain lines.