JPS6212407B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a brake housing which rotates around an axle and is connected to a wheel to be braked, which comprises two brake annular plates and a cylindrical cover arranged at a distance in the axial direction. a brake lining, each consisting of a plurality of arcuate sections, can be pressed by the actuating device against braking surfaces located inside the brake annular plate and facing each other, and at least one arcuate section of the brake lining in each case is arranged on the axle. The present invention relates to an annular plate brake that is mounted on an arcuate brake lining holding piece that is axially movable on a fixed brake holding body.

For such annular plate brakes, in order to replace the brake lining, the housing must be opened and
It is considered a disadvantage that it has to be at least partially disassembled and, in many cases, the operating device also has to be disassembled and removed.

Annular plate brakes have also been proposed in which the housing is provided with a plurality of notches and the lining can be replaced through these notches. Although this construction allows very easy and rapid lining replacement, it has the disadvantage that the rigidity of the housing is reduced. Therefore, this structure cannot be applied when subjected to extreme loads. Furthermore, the notch does not allow the use of the entire lining surface.

Furthermore, two-part solutions are known, in which the housing is held together by screws or clamps. Once uncoupled, the housing halves can be moved axially apart from each other and the lining can be replaced. However, this structure can only be used if there is sufficient space on both sides of the annular disc brake. However, this location is not available, especially on the front axle of the vehicle, due to the provision of the steering nut.

Therefore, it is an object of the present invention to maintain sufficient rigidity of the brake housing while allowing the brake lining to be replaced more easily, and to provide additional support to the sides of the brake annular plate, that is, in the axial direction, in order to replace the brake lining. It consists in constructing an annular plate brake of the first type mentioned so that no space is required.

According to the invention, the cylindrical cover is connected to the brake annular plate by means of removable attachment means at its axial end face, and after the coupling with the brake annular plate is removed, parts of the cover are radially outwardly The solution is that the cover is divided so that it can be swung to the top.

According to the present invention, the brake lining can be replaced without disassembling or removing the operating device provided inside the brake housing, that is, between both brake annular plates and radially inward of the cylindrical cover. Moreover, the brake lining can be replaced by swinging a part of the cylindrical cover radially outwards, leaving both brake annular plates in their substantially normal installed position, and then removing the brake lining radially through the opening thus created. This is important if there is little space available on both sides of the housing, ie on the axially outer sides of both brake annular plates.

The invention will now be explained in more detail with reference to the accompanying drawings, in which examples of embodiments thereof are shown.

1 and 2, which show two cross-sections of an embodiment of an annular disc brake according to the present invention. The annular plate brake of FIGS. 1 and 2 has a housing consisting of two brake annular plates 2 and 4 and a cylindrical cover 6 formed by a plurality of parts divided along a radial plane passing through the axis. . Housing parts 2, 4, 6 have mounting screws 8
are combined by In order to replace the brake lining, the mounting screw 8 is removed, a part of the cover 6 is taken out to the outside, and the operating device, consisting essentially of a piston 10 and a cylinder 12, is moved onto the projection 14 on the piston 10 or the cylinder 12. is axially compressed by the dimension of the protrusion 16 in the area, so that the remaining brake annular plate 2
The brake lining retaining pieces 18 and 20, which consist of two or more parts, can be removed radially outwards and replaced without having to displace the brake linings 18 and 4 too much in the axial direction. As can be seen from FIG. 2, the brake lining retaining piece in this embodiment has a protrusion 1 in the form of a snout.
It consists of three parts each having a recess 22 that engages into the 6. The brake lining holding piece has projections 24 and 26 which engage into U-shaped projections 28 of a brake holding body fixed to the axle.

FIG. 3 shows another embodiment of the invention, an annular disc brake with split covers 30, 32. When replacing the brake lining, although the mounting screw 34 is removed, part 3
0 is connected to the brake annular plate via a pin or bolt 36, not shown, which is arranged in the brake annular plate and engages in a suitable hole 37 in the cover part 30. The replacement of the brake lining takes place through the opening that is created after removing the part 32. After carrying out a replacement of the lining, the correct mutual position of the brake annular plate and the cover part is established by first tightening the screws 34 of the cover part 30 and then placing them tangentially in the appropriate holes 42, 44 of the cover part. The cover part 32 is fixed via a centering element 38, 40, each having a bush 38 and a screw 40, which is secured by being tightened by the mounting screw 34 of the cover part 32.
By ensuring the mutual position of the parts in this way, it is possible to ensure that the separation and subsequent assembly of the cover parts does not result in unbalances that could have an adverse effect on the wheel support. .

FIG. 4 shows a modification of the annular disc brake of FIG. The cover part 50, which is not removed when replacing the brake lining, is mounted between the brake annular plates (not shown), as in the embodiment of FIG. However, the centering element is omitted. The removable cover part 32 of FIG. 3 is replaced in the embodiment of FIG. 4 by one or more outwardly swingable cover parts 52. When replacing the brake lining,
As in the illustrated embodiment, the mounting screws 54 of the cover part remaining on the brake annular plate are removed, the mounting screws 56 are removed from the outwardly swinging part 52, and the reamer bolt at the center of rotation 59 is removed. 5
8 is loosened. Centering during assembly is effected by a reamer bolt 58 and another reamer bolt in a hole 60 provided at the end of the outwardly pivotable cover part.

In the embodiments of FIGS. 3 and 4, in order to obtain optimum concentricity, it is advantageous to make the cover part in one piece as a ring with holes and to divide it as desired in subsequent working steps. .

In the embodiment of the annular plate brake according to the invention shown in FIG. The possibility of taking out and rocking out is shown. A spreading screw 80 is passed through the cover part 70 to be opened, which is guided by a threaded hole 82 in one brake annular plate and rests on the inner surface of the other brake annular plate 76 . When tightening the spreader screws, the brake annular plates 74 and 76 are pushed apart. In this way, removal or outward swinging of the cover 70 is possible.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an annular plate brake according to the present invention, FIG. 2 is a sectional view taken along line A--D in FIG. 1, FIGS. 3 and 4 are sectional views of the cover portion, and b is a plan view of a part of another cover portion and a sectional view thereof taken along the line AA. 2, 4... Brake annular plate, 6... Cylindrical cover, 8... Mounting means, 10, 12... Operating device (piston and cylinder), 18, 20... Brake lining holding piece, 52... Cover portion .

Claims (1)

[Claims] 1. A brake housing that rotates about an axle and is coupled to at least one wheel to be braked, comprising two brake annular plates and a cylindrical cover arranged at a distance in the axial direction. The brake lining consists of a plurality of arcuate pieces, each consisting of a plurality of arcuate pieces.
Arc-shaped brakes which can be pressed by means of an actuating device against mutually opposing braking surfaces on the inside of the brake annular plate, and in which at least one arc-shaped piece of the brake lining is movable in the axial direction on a brake holder fixed to the axle. In the lining retaining piece, a cylindrical cover 6 is connected to the brake annular plates 2 and 4 by a removable attachment means 8 at its axial end face, and is disconnected from the brake annular plates 2 and 4. An annular plate brake, characterized in that the cover 6 is divided so that the rear cover part 52 can swing radially outwards. 2 The cover 6 or the cover parts 50, 52 are
The annular plate brake according to claim 1, wherein the annular plate brake is removably attached to the brake annular plates 2 and 4 by means of attachment screws 8 as attachment means. 3 Cover portion 52 that can swing outward in the radial direction
The annular plate brake according to claim 1 or 2, wherein the annular plate brake is attached at the rotation center 59 by a reamer bolt 58 as attachment means.