Disk brake

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.

13 cl, 15 dwg

 

The technical field to which the invention relates.

The present invention relates to a disk brake having restasurant caliper and one or more brake discs made with the possibility of displacement in the axial direction.

Prior art

Was formerly known installation of one or more brake discs disc brakes with the possibility of displacement in the axial direction. The possibility of bias as brake discs and brake pads is created through the bearing plate or the like. In the presence of a certain number of brake discs instead of one brake disc brake force per brake disc will be reduced. Thus, it is possible to reduce the amount of maintenance and repair of disc brakes.

Summary of the invention

One task of the present invention is to reduce thermal stresses and wear of brake discs and brake pads and, thus, in reducing the frequency of replacement of these parts.

The second objective of the present invention is to reduce the risk of cracks in the brake discs by reducing thermal stresses in them.

The third objective of the present invention is to create for companies that manufacture transport cf is DSTV, the possibility of using disc brakes are the same size for wheels of different sizes without thermal overload of the brake.

An additional object of the present invention is to eliminate or, at least, in reducing noise generation and wear of the connection between the hub and each disk.

The above problem is solved by means of the disk brake in which the brake pads are installed with the possibility of directional displacement in the axial direction in the caliper mounting bracket (clamp) brakes, perceiving the load acting on the brake pads.

Additional objectives and advantages of the invention will become apparent to a person skilled in the art upon studying the following detailed description of preferred embodiments of the invention.

Brief description of drawings

Figure 1 is a perspective representation of the disk brake according to the invention.

Figure 2 is carried out with a spatial separation of the elements of the image of the disk brake of figure 1.

Figure 3 is a cross section made according to line III-III in figure 1.

4, 5A and 5b show a second variant implementation of the connection between the brake discs and the hub disc brakes.

6, 7a and 7b show a third version of the implementation is soedineniya between the brake discs and the hub disc brakes.

Fig-11 show various alternative protective devices.

Figa and 12b represent the image of a truncated form of slots according to one variant embodiment of the invention.

A detailed description of the preferred embodiments

Disc brake according to the invention contains restasurant caliper 1, shown by the imaginary line of the circuit in figure 1 for clarity. The caliper 1 comprises one or more brake discs 2, made with the possibility of displacement in the axial direction. The brake pads 8 are located on both sides of each brake disc 2. Each brake pad 8 has a support 9, the bearing friction of the brake pad on one or both sides. Each brake plate 8 is designed to impact on one of the brake disk 2, when the brake is activated. The brake disk 2 mounted on a rotating hub 3. Brake discs 2 are installed with the possibility of their displacement in the axial direction relative to the hub 3, but without a possibility of rotation relative to it.

In this description, the terms "axial" and "radial", and similar expressions are given with respect to the axis of the hub 3.

Brake discs 2 and the brake pads 8 are shifted in the axial direction on the hub 3 through the bearing plate 6. In other embodiments, about what westline (not shown), a thrust plate is replaced by two or more thrust plates or the like. With each thrust plate usually driven by a single device to create axial forces.

The brake pads 8 installed between the brake disk 2, in one embodiment, is formed from one of a support 9 having a friction brake pads on both sides of the support 9.

At the top of the caliper 1 has a hole 18. The brake pads 8 is inserted and removed through the opening 18 of the caliper 1. In the caliper 1 two guide pins 7 are arranged essentially perpendicular to the disk (disks) in the longitudinal grooves 19. Guide pins attached to the caliper 1 with the removable by means of locking pins 20 or any other suitable fastening means.

The supports 9 of the brake linings 8 are circular recess 12 in the upper corners. The notches 12 are in the form of semicircles. In other embodiments, the implement (not shown) grooves are other forms of cross-sections adapted to form pins 1, for example, oval, rectangular, polygonal, etc. the surface of the grooves 12 of the brake linings 8 interact with the guide pins 7. Thrust plate 6 can be made with grooves (not shown) in the upper corners. The surface of the grooves 11 of the thrust plate 6 also interact with the guide pins 7. The brake pads 8 are attached to the support plate 1 through which the your guide pins 7 and grooves 11 and can be displaced only in the axial direction. The lower edge of the bearing plate 6 and the brake pads 8 are located at some distance from the hub 3. Thus, there is a gap between the hub 3 and, respectively, the thrust plate 6 and the brake linings 8.

When it becomes necessary to replace the brake pads 8, the locking pins 20, which provide a record of the guide pins 7 relative to the caliper 1 is released. After this, the guide pins 7 extend from the grooves 19, causing the brake pads can be raised up out of the caliper 1. New brake pads 8 are lowered down through the hole 18 of the caliper. Then, the guide pins 7 are again inserted into the groove 19, thereby the notches 12 of the brake linings 8 should be located so that the guide pins 7 could enter them. In conclusion, guide pins 7 is fixed relative to the support plate 1 by means of locking pins or the like

Thus, the brake pads 8 mounted for displacement in axial direction on the guide pins 7.

In an alternative construction (not shown) guide pins replaced by support elements formed in the brake caliper 1. The brake pads 8 and possibly resistant(s) plate(s) 6 will be installed with the possibility of a directional bias on the support elements. Bearing 9 of the brake linings 8 and eat the recess for engagement with the supporting elements. The shape of the grooves corresponds to the shape of the supporting elements. To allow insertion and extraction of the brake lining 8, the caliper 1 in the support elements, or near them formed slits.

As described above, the brake disk 2 mounted on the hub 3. While driving the vehicle hub 3 rotates. The connection between the hub 3 and the brake disk 2 has the shape of the slots 4 in the first embodiment, shown in Fig.1-3. Slots 4 provide the possibility of displacement of the brake discs 2 in the axial direction, but transmit the rotation of the hub 3 of the brake disk 2.

The surface of the slots can be processed, and/or they may be of the coating in order to provide wear resistance and reduce friction in the connection between the hub 3 and the brake disk 2.

In the second embodiment, shown in figure 4 and 5, the connection between the hub 3 and the brake disk 2 is a combination of slots 4 and springs 5. The spring 5 is fixed in the notches 14, 15 respectively of the hub 3 and the brake disk 2. Recesses 14, 15 of the hub 3 and the disk 2 are cross-section with the shape of a semicircle. Recesses 14, 15 are located next to each other for the formation of a circular cylinder which is intended for reception of the spring 5. Spring 5 provides the possibility of axial displacement brake disc 2 relative to the part of the hub 3 and the transmitting rotation of the hub 3 disks 2. Figs.4 and 5 show four springs 5 in the connection between the hub 3 and the disk 2. To a person skilled in the art it is obvious that you can use a different number of springs 5. However, you should use at least three springs, with the angular distance between two adjacent springs 120°.

When sending a slight braking torque or in the absence of transmission of the braking torque of the spring 5 provide centering of each of the disk 2 in order to avoid contact with the splines 4 of the hub 3. With the increase of the braking torque of the spring 5 will be elastically deformed in the radial direction, resulting slots 4 will ensure the transfer of the braking torque. The centering of the disk 2 by means of the springs 5 is necessary in order to avoid noise and wear when the disk 2 is rotated in the unloaded state.

In the third embodiment, shown in Fig.6 and 7, the connection between the hub 3 and the brake disk 2 has the form of a spring 5, and does not use any of the slots. As for the second variant implementation, it springs 5 are round cylinders formed by the grooves 14, 15 respectively of the hub 3 and the brake disk 2. When there is no transmission of the braking torque, the disk 2 can be displaced in axial direction by sliding on the springs 5. Due to, for example, is progoti brake caliper 1, there is a need in a certain axial displacement of the disk 2 during torque transmission. When using the elastic properties of the springs 5 in the axial direction is offset in the axial direction can be performed without slipping, which is preferable from the viewpoint of reducing wear. In this case, the spring 5 also provide centering disks 2 and thereby avoid noise and wear when the disk 2 rotates in the unloaded state.

In one embodiment, the last variant of implementation of some of the springs have a somewhat larger and less stiffness compared to the other springs.

To secure the connection between the hub 3 and the brake disk 2 protective devices installed in the gap between the hub and the brake lining 8. Protective devices are installed in the axial direction between the brake disks 2 and also with the outer side of each disk 2. Protective devices must be protected from road dirt and possibly from thermal radiation.

On Fig the location of the protective device shown schematically. To a person skilled in the art it is obvious that the protective device can have many different forms. Figure 9-11 for three different variants of implementation of the protective device shown extended, and shows the area And Fig.

In the first embodiment (Fig.9) protective fit the e is a telescopic tube 10, made from metal. Telescopic tube 10 has elasticity in an axial direction and is compressed when the decrease of the distance between the disks 2. The ends of the telescopic tube 10 is attached to the corresponding brake disc 2.

In the second embodiment (figure 10) protective device is a metal spiral 13. Metal spiral 13 is made of a metal tape, which is wound with the formation of the spiral 13. The coil 13 is formed so that it has elastic properties in the axial direction, i.e. in the direction perpendicular to the disk 2, and is compressed when the decrease of the distance between the disks 2. In addition, the spiral 13 are tightened in the axial direction so that they are always covered the distance between the disk drives 2 on the hub 3 and possibly passed by the wheels 2.

In the third embodiment (11) of the protective device is a tape 16 of the textile material. The ends of the tape 16 from the textile material is affixed to the disk.

In an additional embodiment (not shown) of the protective device can be a combination of a telescopic tube 10 or spiral 13 and the tape 16 from the textile material. In this case, the tape 16 from the textile material normally located inside the tube 10 or spiral 13, then eats the closest to the hub 3.

Protective means 10, 13, 16 will prevent the ingress of dirt road in the area between the hub 3 and the brake disk 2. To reduce heat transfer, slots 4 can be performed with a truncated (cut) shape, as shown in Fig. The form of truncated spline Fig are given only as examples, and those skilled in the art it is obvious that the slots can have many different forms. Due to truncated forms of physical contact between the brake disk 2 and the hub 3 is reduced, and therefore the heat transfer is reduced. Naturally, this applies only to options for implementation, which include slots 4.

When using a disc brake usually driven by means of the brake mechanism, which is driven with a drive (not shown), preferably a pneumatic actuator. In other embodiments, the implementation uses a hydraulic or electric actuator. Since the drive mechanism does not form any part of the present invention, it will not be additionally described in this application. One example of the drive mechanism shown in figure 1-3.

When adjusting the brake action of the brake mechanism will ensure that the offset of the thrust plate 6 or the thrust plate in the direction towards the brake disk 2. At the given offset resistant layer is 6 or plate will cause the input of the brake linings 8 into contact with the brake disk 2. Thrust plate 6 or the plate will cause(ut) offset all of the brake linings 8 and the brake disk 2, with the possible exception of the last brake linings 8, i.e. brake pads, located furthest from the bearing plate 6 or plates. When the brake pads 8 and the brake disks 2 are in contact, the rotation of the hub 3 will slow down or stop as usual. In turn, this will cause a reduction in vehicle speed or stop it. The tangential component of the load acting on the brake pads 8, will be perceived guide pins 7 installed in the caliper 1.

To a person skilled in the art it is obvious that the number of discs may vary, without departing from the scope of the present invention defined by the attached claims.

1. Disc brake mainly for vehicles intended for movement on roads containing restasurant caliper (1), including one or more brake discs (2), one or more thrust plates (6) and the number of brake pads (8), characterized in that the brake disks (2) are mounted on a rotating hub (3) without a possibility of rotation relative to the hub (3), but with the possibility of displacement in the axial direction relative to her through the DG springs (5) for transmitting braking torque from the brake disc (2) to the hub (3), brake pads (8) installed with the possibility of directional displacement in the axial direction in the caliper (1)perceiving the load acting on the brake pads (8), and caliper (1) has a hole (18)through which the brake pads (8) is inserted and removed.

2. Disc brake according to claim 1, characterized in that the thrust(s) plate(s) (6) set(s) with directional bias on the guide pins (7)that is fixed relative to the support plate (1) with the possibility of their removal or supporting elements in the caliper (1).

3. Disc brake according to claim 1, characterized in that the brake pads (8) contain support (9)having a recess (12) for engagement with guide pins (7) or support elements, and the brake pads (8) and brake discs are shifted in axial direction by thrust(s) of the plate (plates) (6).

4. Disc brake according to claim 3, characterized in that the brake pads (8) have the same form.

5. Disc brake according to claim 3, characterized in that the bearing (9), at least one brake lining (8) has a brake friction pad on both sides.

6. Disc brake according to claim 5, characterized in that there are two brake disk (2).

7. Disc brake according to claim 6, characterized in that the brake disks (2) mounted for displacement in the axial direction of the tion on the hub (3) through slots (4), and springs (5), and if the value is below the threshold braking torque the braking torque is transmitted from the brake disc to the hub by means of springs.

8. Disc brake according to claim 7, characterized in that in the case where the connection between the brake disks (2) and the hub (3) includes slots (4), and spring (5), there are at least three springs (5).

9. Disc brake according to claim 7, characterized in that the springs (5) are helical springs that are installed in the axial direction of the brake(s) disk (s) (2) and hub (3)and springs (5) are semicircular recesses (14, 15), respectively, of the hub (3) and the brake(s) disk(s) (2), and spring (5) ensure that offset disk(s) (2) in the axial direction, but resist the displacement of the disk(s) (2 in the radial direction.

10. Disc brake according to claim 9, characterized in that the protective device (10, 13, 16) are provided on the hub (3) in the axial direction between the discs (2) and outside of the disk (2); in this case, the protective devices are tape (16), of textile material, and/or metal tube (10), or spiral (13); and protective devices (13, 16) are drawn in the axial direction, but do not prevent displacement of the brake disc (2) in the axial direction.

11. Disc brake according to claim 10, characterized in that regenye the disk surface(s) (2) and/or hub (3) processed to make them wear resistance and/or corrosion resistance and the brake is actuated by pneumatic, hydraulic or electric drive.

12. Disc brake according to claim 11, characterized in that the slots (4) given some form to reduce heat transfer between the brake disks (2) and the hub (3).

13. Disc brake according to item 12, characterized in that the slots (4) performed truncated to reduce heat transfer.

14. Disc brake according to claim 7, characterized in that if the value is above the threshold braking torque the braking torque is transmitted from the brake disc to the hub by means of splines.



 

Same patents:

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FIELD: mechanical engineering.

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FIELD: mechanical engineering.

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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.

13 cl, 15 dwg

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