Disc brake lining for railway transport and industrial vehicle

FIELD: transport.

SUBSTANCE: invention relates to railway and industrial vehicles, particularly, to disc brake linings. This lining comprises load-bearing plate and multiple friction elements. Every friction element features long shape with two bent parallel sides. Every friction element is secured at load bearing plate so that long side bent line makes, in fact 0 degree angle relative to appropriate concentric circles of the disc with said lining. Every friction element is secured to said plate via anti-turn lock.

EFFECT: ruled out shift of friction elements, efficient braking, decreased noise.

9 cl, 6 dwg

 

The present invention relates to a disc brake pad for use in rail vehicles and vehicle industrial purposes.

As you know, disc brakes are experiencing significant pressures and optimum braking action depends on effective transfer of braking pressure from the pads to the disk.

Research conducted in the last few years has shown that many of the friction elements on a single plate is more efficient than a large one friction element.

In European patent EP 1099061 described pad disc brake, in particular for railway transport, containing a multitude of friction elements attached to the carrier plate. Each friction element has an elongated shape attached to the carrier plate by means of two rivets, and is different from the other elements relative to the concentric circles of the disk, while maintaining the angle in the range 0°<a<45° relative to the concentric circles of the disk.

It was found that the curved elongated friction elements, which are arranged along concentric circles of the disk, provide improved performance in terms of braking performance and noise.

The technical object of the present invention is durable�Xia creating pads disc brakes for use in railway transport and the vehicle for industrial use, the main characteristics, specified in paragraph 1 of the claims, and the preferred and/or auxiliary characteristics, specified in clauses 2-9 of the claims.

Below for an example will be described using the accompanying drawings two non-limiting embodiment of the present invention.

In the drawings:

Fig. 1 is a partially transparent plan view of the first embodiment of the lining according to the present invention;

Fig. 2 is a partially transparent plan view of a second embodiment of the lining according to the present invention;

Fig. 3 is a plan view of the parts common to the embodiments of Fig. 1 and 2;

Fig. 4 is a plan view of another part that is common to the embodiments of Fig. 1 and 2;

Fig. 5 is a graph showing the results of tests on noise disc brakes, made of cast iron; and

Fig. 6 is a graph showing the results of tests on noise disc brakes made from steel.

Reference position 1 in Fig. 1 designates, generally, the first embodiment of the lining according to the present invention.

Trim 1 essentially comprises a supporting plate 2 and eight friction elements 3, each of which is mounted on a support plate 2 with a single rivet. Each friction element 3 has an elongated shape and is formed by two parallel curved long� sides 5A and 5b.

The friction elements 3 are fixed on the base plate 2 so that the lines of curvature of the sides 5A and 5b form an angle of 0° relative to the concentric circles X disk D, which is exposed trim 1.

Thus, each friction element 3 has an elongated friction surface 3A formed by two curved long sides, which are located at work along concentric circles X disk D.

Due to the fact that the linings of disc brakes for use in railway transport and industrial vehicle destination have only one position relative to the disk, the position of the friction elements on the plate can be determined for the purposes of the invention by determining their position relative to the disk.

In particular, the friction elements 3 are essentially rectangular, with two curved parallel long sides.

Each friction element 3 is provided with a reinforcing element 6 (see Fig. 3), which is embedded in the friction element 3, leaving the mounting surface of the reinforcing element is open, i.e. the mounting surface of the reinforcing member 6 is flush with the surface of the friction element 3 facing the carrier plate.

As shown in Fig. 3, each reinforcing element 6 contains the plate 7 in which clicks�sawano Central hole 8 for a blind rivet 4 and two round tooth 9, passing perpendicularly from opposite sides of the Central hole 8, and which, as described below, contribute to the prevention of rotation of the friction element 3. Each reinforcing element 6 also includes two attachment part 10, located at the two ends of the plate 7, each of which has two retaining tooth 11, passing inside of the friction element 3 is perpendicular to the plate 7 and on the opposite side relative to the tooth 9.

Plate 1 contains many of the elements 12 to prevent rotation (one of which is shown in Fig. 4), each of which has a first surface for mounting on a support plate 2 and a second mounting surface on the corresponding reinforcing element 6.

As shown in Fig. 4, each element 12 to prevent rotation of the plate contains 13 in which is formed a Central hole 14 for rivets 4 and two holes 15 for the reception of the tooth 9 of the reinforcing element 6.

Each element 12 to prevent rotation has two recesses 16, each of which is formed along the respective side 17 of the plate 13 and receives the corresponding pin block rotation (not shown for simplicity) extending from the carrier plate 2.

As can be understood from the above description, the arrangement of the friction elements is an important feature of the present invention and therefore�u must be maintained during operation of the brake. Consequently, the necessary elements to prevent rotation, the importance of which is even larger given the fact that each friction element is attached to a support plate with rivets around which he thereby can be rotated.

Due to the fact that the reinforcing element 6 is integrally formed with a friction element 3, that is embedded in and fixed the tooth 9 that communicate with the holes 15 in the element 12 to prevent rotation, which in turn is fixed relative to the carrier plate 2 with the grooves 16, ensures the retention of the friction element 3 in position on the pad during operation.

Elements 12 prevent rotation also serve as spacers to allow air circulation between the friction elements 3 and the supporting plate 2.

Regardless of the specified additional benefits element 12 to prevent rotation in the scope of the present invention also includes other means to prevent rotation, which is able to equally maintain the position of the friction elements during operation.

Fig. 2 by the reference position 21 indicated, in General, the second embodiment of the lining disc brake according to the present invention.

Identical parts of the plates 21 and 1 are denoted by the same�uloznymi positions and will not be described further.

Plate 21 is different from lining 1 is essentially the form of the friction elements. Plate 21 contains eight essentially trapezoidal frictional elements 22, the direction of the large and small bases of which are curved so as to obtain the desired angle relative to the concentric circles X disk D.

In this case, the friction elements 22 have an elongated shape and is formed by two parallel long sides 23a, 23b, but unlike the friction elements 3 have two long sides of different lengths, despite that both form an elongated shape.

The friction elements 22 have a possible extra advantage over the friction elements 3 due to the presence of the longer sides, thereby providing more friction where the peripheral speed is greater.

Fig. 5 and 6 show the results of testing the noise level of the disk size h mm, made of cast iron and steel respectively.

Test of noise level was carried out under the same conditions described above using the pad 1 and known standard control pad. In particular, the control pad contains a triangular friction elements arranged differently relative to the concentric circles of the disk and made of the same material as that of the friction lining elements 1.

p> The noise was recorded for three series of brake applications (1-9, 10-18, 19-27) at different pressures. Each series includes three braking at a disk speed of 50 km/h, three - speed drive 70 km/h and three - speed drive 100 km/h. These speeds were chosen to simulate the speed of the train at or near the approach to the station, that is, when the noise level is the most important.

Shown in the graphs of Fig. 5 and 6 the test results, in decibels, show that the pads according to the present invention have a much lower noise level than the control pads, without compromising braking performance.

1. Trim disc brakes for use in railway transport and the vehicle for industrial use, containing a carrier plate and a multitude of friction elements, characterized in that each friction element has an elongated shape, with two curved parallel long sides, and each friction element attached to the carrier plate in such a way that the lines of bending the long sides form an angle of essentially 0° relative to the respective concentric circles of the disk, which uses the overlay, each of the friction elements attached to the carrier plate through the means of preventing rotation.

2. Pad disc brake according to claim 1, wherein �each of the friction elements attached to the carrier plate with a single rivet.

3. Pad disc brake according to claim 1, characterized in that the means for preventing rotation contain a reinforcing element embedded in the friction element and prevent rotation, which is on one side attached to a support plate, and on the other side interacts with the reinforcing element in such a manner to prevent rotation.

4. Pad disc brake according to claim 3, characterized in that each reinforcing element comprises a plate in which is formed a Central hole for rivets and two locking teeth.

5. Pad disc brake according to claim 4, characterized in that each reinforcing element comprises two fastening portions placed at both ends of the plate, each of which has two teeth, passing inside of the friction element, perpendicular to the plate and on the opposite side relative to the locking teeth.

6. Pad disc brake according to claim 5, characterized in that each element preventing rotation includes a plate in which is formed a Central hole for rivets and two holes for placement of the locking teeth.

7. Pad disc brake according to claim 6, characterized in that each element preventing rotation includes two recesses formed along the respective sides of the plate, for all the appropriate elements�tov rotation lock, extending from the carrier plate.

8. Pad disc brake according to claim 1, characterized in that the friction elements are essentially rectangular.

9. Pad disc brake according to claim 1, characterized in that the friction elements are essentially trapezoidal.



 

Same patents:

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FIELD: machine building.

SUBSTANCE: invention refers to the field of machine-building, namely, to the friction disks. The friction disk comprises a metal frame with eight recesses along external contour of the frame and eight holes with composite friction cover plates secured thereto. The friction surfaces of the friction cover plates are provided with twelve grooves each. The frame holes and recesses alternate along the disk circumference. Four grooves are located at one of the cover plates in the area of frame recesses, while the other grooves are located beyond the area of frame recesses and holes. Four grooves are located at the other cover plate within areas of frame holes, while the rest grooves are located beyond the area of frame recesses and holes.

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EFFECT: longer life, higher reliability.

2 cl, 3 dwg

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