Brake arrangement

Abstract

A brake arrangement for a commercial vehicle is proposed, comprising an axle element (1) for mounting a wheel hub and a drum brake, which includes at least one brake drum rotatable with the wheel hub and a support (50) connected to the axle element (1) for a brake camshaft of the drum brake. The brake camshaft is a rotationally fixed unit consisting of a cam element (55) acting against the brake shoes of the drum brake, a shaft (54) extending parallel to the longitudinal axis (A) of the axle element (1), and a drive section (53). The support (50) is provided with a rotary bearing (51) for radial support of the shaft (54), through which the shaft (54) passes. To reduce difficulties in the final assembly of a drum brake, which are caused by the specific characteristics of a drum brake, in particular by the spatial separation of the functional areas of brake shoe support and brake shoe spreading, the carrier (50) comprises a base body (71) connected to the axle element (1) and a bearing block (72). The bearing block (72) has the pivot bearing (51) and is detachably attached to the base body (71). The bearing block (72) is supported against a surface (76A, 76B) of the base body (71) that lies in a plane (E) extending parallel to the longitudinal axis (A) of the axle element (1).

Description

[0001] The invention relates to a brake arrangement for a commercial vehicle, with an axle element for supporting a wheel hub and with a drum brake, which comprises at least one brake drum rotatable with the wheel hub and a carrier for a brake camshaft of the drum brake, which carrier is connected to the axle element, wherein the brake camshaft is a rotationally fixed unit comprising a cam element working against the brake shoes of the drum brake, a shaft extending parallel to the longitudinal axis of the axle element and a drive section, and wherein the carrier is provided with a pivot bearing for radially supporting the shaft shaft, through which the shaft shaft passes.

[0002] Such a brake arrangement for use on a commercial vehicle axle with compressed air brakes is known from EP 1 242 753 B1 and from Fig. 5 of DE 10 2005 038 275 A1 and WO 2016 / 154 007 A1. A component of the device for spreading the two brake shoes of the drum brake apart from one another is a carrier attached to an axle element of the commercial vehicle axle, which carrier is provided with a mounting opening for a pivot bearing. The brake camshaft of the drum brake is radially supported in the pivot bearing such that when the brake camshaft is rotated, the brake shoes are spread apart from one another against the brake drum. The brake camshaft itself is a rotationally fixed unit consisting of the actual cam element in the form of, for example, a double cam, a shaft arranged parallel to the longitudinal axis of the axle element, which is supported in the pivot bearing, and a drive section.

[0003] During the final assembly of the commercial vehicle axle, i.e., the fitting of the axle with the individual elements or assemblies of the air brake, the known brake arrangement has assembly-related disadvantages. This is particularly true when this assembly is not carried out by the axle manufacturer, who specializes in this area, but rather by its customer, i.e., the vehicle manufacturer. The assembly-related problems are partly due to the fact that the function of the support rigidly attached to the axle element is often not only to accommodate the pivot bearing for the brake camshaft, but the brake shoe support can also be arranged on the same support – that is, the single or double bearing pin on which the two brake shoes pivot with their other, non-spread ends.In addition, these two different functional areas of the carrier—the axle-mounted brake shoe support on the one hand and the pivot bearing of the spreader device on the other—are located on different sides of the axle element that is inevitably arranged between them. This circumstance also leads to disadvantages during the final assembly of the commercial vehicle axle.

[0004] The aim of the invention is to reduce, by means of suitable design measures, such difficulties in the final assembly of a drum brake on a commercial vehicle axle which are caused by the special features of a drum brake, in particular by the spatial separation of the functional areas of brake shoe support on the one hand and brake shoe spreading on the other.

[0005] To achieve this object, a brake assembly for a commercial vehicle with the features of patent claim 1 is proposed. In this brake assembly, the support consists of a base body connected to the axle element and a bearing block, which directly accommodates the pivot bearing in a through-opening and is releasably attached to the base body. The bearing block is supported against a surface of the base body that lies in a plane extending parallel to the longitudinal axis of the axle element. In a particularly advantageous embodiment, this plane also extends parallel to a plane in which the longitudinal axis of the axle element lies.

[0006] By dividing the assembly into, first, a base body connected to the axle element and, second, a bearing block that can be separately attached to the base body and directly accommodates the pivot bearing for the brake camshaft in a through-hole, this simplified final assembly is achieved by equipping the commercial vehicle axle with the individual elements or assemblies of the pneumatically actuated drum brake. The improved assembly is essentially based on the fact that the bearing block, which forms a separate element, is supported against a surface of the base body that lies in a plane extending parallel to the longitudinal axis of the axle element. This leads to a particularly favorable assembly direction when attaching and attaching the bearing block to the axle-fixed base body.

[0007] Advantageous embodiments of the brake arrangement are specified in the subclaims.

[0008] In connection with one embodiment, it is proposed that the bearing block be screwed to the base body in such a way that the axis of the screw connection runs perpendicular to the surface. Preferably, this embodiment provides a total of two screw connections, whose axes run on different sides of a plane spanned by the longitudinal axis of the axle element and a straight line parallel to one of the axes of the two screw connections.

[0009] In another design variant, the bearing block is also screwed to the base body via two screw connections, although their axes run parallel to the longitudinal axis of the axle element.

[0010] For efficient force distribution, a further design proposes centering means that align the bearing block and the base body in a direction transverse to the longitudinal extension of the axle element. For a compact and material-saving design, the centering means are preferably arranged between the screw connections.

[0011] The centering means are preferably pairs of surfaces, each consisting of a surface on the bearing block and an opposite surface on the base body, wherein the surfaces extend parallel to a plane in which the longitudinal axis of the axle element lies, and the surfaces are preferably also arranged at right angles to the aforementioned plane.

[0012] A further embodiment of the brake assembly is characterized by a second carrier, which is designed as a brake carrier. This second carrier is provided with one or more bearing pins that serve to pivotally support the two brake shoes of the drum brake. The second carrier is also preferably attached to the axle element, with the first carrier and second carrier being attached to the axle element from opposite sides.

[0013] In another embodiment, the base body is also the brake carrier of the drum brake, i.e. the bearing pins for pivotably supporting the two brake shoes of the drum brake are also formed directly on the base body.

[0014] In the following, exemplary embodiments of the invention are explained with reference to the drawings, and further details and advantages are given. They show: Fig. 1 shows a perspective view of a fully assembled brake arrangement for a commercial vehicle, which serves to connect a drum brake to an axle element of a commercial vehicle axle; Fig. 2 a cross-section through the axle element in the area of ​​the connection with the brake carrier, the brake carrier itself not being shown; Fig. 3 in an exploded view the objects according to Fig. 1 before assembly; Fig. 4 an enlarged section of Fig. 3; Fig. 5 shows a view of a second embodiment of a fully assembled brake arrangement for a commercial vehicle, which serves to connect a drum brake to an axle element of a commercial vehicle axle; Fig. 6 the brake arrangement according to Fig. 5 in perspective view; Fig. 7 in an exploded view the objects according to Fig. 5 or Fig. 6 before assembly; Fig. 8 shows a view of a third embodiment of a fully assembled brake arrangement for a commercial vehicle, which serves to connect a drum brake to an axle element of a commercial vehicle axle; Fig. 9 the brake arrangement according to Fig. 8 in perspective view; Fig. 10 in an exploded view the objects according to Fig. 8 or Fig. 9 before assembly.

[0015] The brake arrangement described here is used on the vehicle axle of a commercial vehicle and preferably on a rigid vehicle axle with an elongated axle body 3 which is provided at both ends with steering knuckles 2 for supporting the wheel hubs and the wheels of the vehicle.

[0016] The commercial vehicle axle is also equipped with a drum brake near each wheel hub. The drum brake consists of two brake shoes, the first ends of which are pivotally mounted on a brake carrier fixed to the axle, and the second ends of which can be spread apart from each other against the brake drum by means of a brake camshaft. As is common with heavy commercial vehicle axles, the brake camshaft is driven pneumatically by means of a compressed air cylinder attached to the axle element.

[0017] The brake arrangement described below allows for a high degree of flexibility. In particular, this flexibility is so great that even during final assembly, when the axle element is already fully produced, the most suitable brake components for the respective application can be determined and then installed. This is achieved through a modular design not only of the axle element 1 of the vehicle axle, but also of the brake support components.

[0018] In general, the brake carrier is the axle-fixed element of a drum brake. Depending on their functionality, drum brakes also have rotating parts, such as the brake drum, which rotate with the wheel hub.

[0019] The vehicle axle designed as a rigid axle consists in its central section of an axle tube 3 of round or square cross-section, at both ends of which the axle elements 1 are arranged, for example by welding to the central axle tube 3.

[0020] Each axle element 1 includes a mounting section 4 and, on the outside, the steering knuckle 2, on which the vehicle's wheel hub and the drum brake drum are rotatably mounted by means of corresponding roller bearings. A mounting section 4 is located between the steering knuckle 2 and the central axle tube 3, on the same longitudinal center axis A. This section serves to connect the axle-mounted brake elements.

[0021] On the brake carrier 40 of the drum brake, one or more bearing pins 43 are formed for pivotally supporting the two brake shoes of the drum brake. According to Fig. 3, a first support foot 46 and a second support foot 47 are further formed on the brake carrier 40, with which the brake carrier 40 is supported on the axle element 1.

[0022] For supporting the brake carrier 40 and for supporting a further, opposite carrier 50, the axle element on the fastening section 4 consists of a primarily cylindrical base body 5 arranged on the longitudinal center axis A of the steering knuckle 2 and of two and only two brackets 6, 7. These are formed in one piece, ie of the same material, on the base body 5.

[0023] Fig. 2 shows a cross-section through the base body 5 and the two wing-like brackets 6, 7 projecting outwards from the base body 5.

[0024] The axle element is designed, at least on the mounting section 4, as a forged component comprising the solid base body 5 and the brackets 6, 7 projecting from it. This is forged, for example, in a drop forging die, which results in the component's high strength and toughness.

[0025] After the forging process, four mounting surfaces 6A, 6B, 7A, and 7B are machined on the forged component, e.g., by milling or grinding these surfaces. In addition, two holes 26.1 and 26.2 are drilled in bracket 6 and two holes 27.1 and 27.2 in bracket 7 using appropriate drilling tools.

[0026] The axle element 1 is designed and connected to the axle tube 3 in such a way that the steering knuckle 2 and the base body 5 of the fastening section 4 are arranged on a common longitudinal central axis A.

[0027] According to Fig. 2, the two brackets 6, 7 are arranged on opposite circumferential sections of the primary cylindrical base body 5. At the Fig. 2 on the left, there is a first fastening surface 6A and, facing away from it, a second fastening surface 6B. Likewise, there is Fig. 2, the second bracket 7 shown on the right has a first fastening surface 7A and, facing away from this surface, a second fastening surface 7B.

[0028] The four fastening surfaces 6A, 6B, 7A, 7B are preferably machined flat and each have a greater extension in the longitudinal direction than in the radial direction of the axle element 1. The longitudinal extension is preferably two to six times the radial extension. The two fastening surfaces 6A, 6B of the first bracket 6 extend parallel to one another. Likewise, the two fastening surfaces 7A, 7B of the second bracket 7 extend parallel to one another.

[0029] In the exemplary embodiment, the two first fastening surfaces 6A, 7A extend in a common plane, and the two second fastening surfaces 6B, 7B also extend in a common plane. These planes are parallel to one another, the distance between which is between 15% and 35% of the diameter of the cylindrical base body 5.

[0030] Due to the parallelism of all four mounting surfaces 6A, 6B, 7A, 7B, the surface normals N perpendicular to these surfaces run tangentially with respect to the central longitudinal axis A of the axle element 1. The surface normals N of the mounting surfaces 6A and 7A are parallel to each other and point in the same direction. Likewise, the surface normals N of the mounting surfaces 6B and 7B are parallel to each other and point in the same direction.

[0031] On each of the brackets (e.g. on bracket 6) there is therefore a fastening surface (e.g. 6A) with a surface normal N tangential to the longitudinal center axis A and parallel to the surface normal N of a fastening surface (e.g. 7A) present on the other bracket 7 to support the brake carrier.

[0032] The first bracket 6 is provided with two holes 26.1, 26.2, each extending at right angles between the mounting surfaces 6A, 6B of the bracket and arranged one behind the other in the longitudinal direction of the axle element 1. Similarly, the second bracket 7 is provided with two holes 27.1, 27.2, each extending at right angles between the mounting surfaces 7A, 7B of the bracket and arranged one behind the other in the longitudinal direction of the axle element 1.

[0033] A screw 36.1, 36.2, 37.1, and 37.2 passes through each of the holes 26.1, 26.2, 27.1, and 27.2. The screws removably attach the brake carrier 40 and the carrier 50 to the axle element 1.

[0034] According to Fig. 3, the brake carrier 40 is provided with a first support foot 46 and a second support foot 47 for its fastening purpose. Both support feet 46, 47 are provided with a flat, machined underside, with which they are supported against the first fastening surface 6A of the bracket 6 and against the first fastening surface 7A of the bracket 7, respectively.

[0035] Direct contact between the brake carrier 40 and the axle element 1 also only exists at the brackets or support feet. Although the brake carrier 40 is provided with a bridge section 48 between the support feet 46, 47, there is no contact between the brake carrier 40 and the steering knuckle 1 in the area of ​​the bridge section 48. Rather, there is a radial clearance between the inner side 49 of the bridge section 48 facing the axle element 1 and the outer side of the primarily cylindrical base body 5.

[0036] The brackets 6, 7 serve not only to attach the brake carrier 40, but also to attach the carrier 50, which is also an axially fixed element of the drum brake and consists of a base body 71 and a bearing block 72. The carrier 50 serves, by means of a pivot bearing 51 arranged on the bearing block 72, to pivotally support a shaft 54. At one end, the shaft has a drive section 53 and, at its other end, carries the cam element 55 designed as a double spreading cam, which spreads the two brake shoes of the drum brake away from each other during braking. The inherently rotationally fixed unit consisting of the cam element 55, shaft 54, and drive section 53 forms the brake camshaft of the brake.

[0037] The base body 71 of the support 50 has a first support leg 56, a second support leg 57, and a bridge section 58 connecting the support legs 56, 57 and supporting the eye 51. The undersides of the support legs 56, 57 are machined flat. The support leg 56 rests against the second mounting surface 6B of the bracket 6, and the support leg 57 rests against the second mounting surface 7B of the bracket 7.

[0038] Overall, therefore, the carrier 50 of the drum brake is supported with its base body from one side against the wing-shaped brackets 6, 7, whereas the second carrier 40 (brake carrier) is supported from the other side against the brackets 6, 7. The first carrier 50 is also in contact with the axle element 1 exclusively via the support feet 56, 57. However, there is a radial free space between the inner side 59 of the bridge section 58 facing the axle element 1 and the outer side of the primarily cylindrical base body 5 of the axle element.

[0039] The carrier 50 and the second carrier 40 (brake carrier) are fastened to the two brackets 6, 7 with a total of four screws 36.1, 36.2, 37.1, 37.2. The two first support feet 46 and 56 are connected to each other by two screws, which preferably extend with their unthreaded shaft portion through the holes 26.1, 26.2 of the first bracket 6. The two second support feet 47 and 57 are connected to each other by two screws, which preferably extend with their unthreaded shaft portion through the holes 27.1, 27.2 of the second bracket 7.

[0040] The screws therefore each have a threaded portion, a shank portion, and a screw head 38. They are inserted from opposite directions. The insertion of screw 36.1 is shown by a dotted line. This screw 36.1 rests with its screw head 38 on the support foot 56 of the two-part support 50, penetrates the bore 26.1 of the first bracket 6, and engages with its threaded portion into a thread in the support foot 46 of the support 40.

[0041] The other screw 36.2, which also serves for fastening to the first bracket 6, rests with its screw head 38 on the support foot 46 of the carrier 40, penetrates the second bore 26.2 of the bracket 6, and engages with its threaded portion in a thread in the support foot 56 of the carrier 50.

[0042] In the same way, the second support feet 47 and 57 are attached to the second bracket 7 using the other two screws 37.1 and 37.2.

[0043] The alternating screw connection results in an axial offset of the bridge section 48 relative to the further bridge section 58. This, in turn, allows for an axial offset of the functional elements formed on the two-part carrier 50 on the one hand and the carrier 40 on the other. In the exemplary embodiment, the bearing pins 43 of the brake carrier 40 are arranged offset in the direction of the longitudinal center axis A relative to the pivot bearing 51, which surrounds and radially supports the shaft 54.

[0044] For ease of assembly, the support 50 is in two parts and consists of the base body 71 and the bearing block 72, which is detachably screwed to the base body 71. The bearing block 72 accommodates the pivot bearing 51 in a through-hole, in which the shaft 54 ​​of the brake camshaft is rotatably supported. The through-hole and the pivot bearing 51 extend parallel to the longitudinal axis A of the axle element 1.

[0045] The bearing block 72 is screwed to the base body 71 of the support 50 by means of two screw connections 57A, 57B. The bearing block 72 rests against two surfaces 76A, 76B of the base body 71. The surfaces 76A, 76B lie in a common plane E. This plane E extends parallel to a plane in which the longitudinal axis A of the axle element 1 lies.

[0046] The axes of the screw connections 75A, 75B are perpendicular to the surfaces 76A, 76B arranged in the plane E and run tangentially with respect to the longitudinal axis A.

[0047] Also for improved assembly, the bearing block 72 and the base body 71 are aligned with each other in a direction transverse to the longitudinal extent of the axle element 1 by means of centering means. For this centering, a projection is formed on the bearing block 72, which projects into a recess 80 in the base body 71 with at most slight lateral play. The recess 80 in the base body 71 is located between the two surfaces 76A, 76B used to secure the bearing block. Fig. 4 and Fig. 7, the centering means are pairs of surfaces, each consisting of a surface 82 on the bearing block 72 and an opposite surface 81 on the base body 71. The surfaces 82, 81 of the pairs of surfaces extend parallel to the longitudinal axis A. Furthermore, the surfaces 82, 81 are arranged at right angles to the plane E in which the fastening surfaces 76A, 76B extend. Due to this design and arrangement, the centering means are designed exclusively for the mutual alignment of the bearing block 72 and the base body 71 in the direction transverse to the longitudinal extent of the axle element 1. However, the centering means do not mutually align the bearing block 72 and the base body 71 in the longitudinal direction of the axle element 1.

[0048] Therefore, the variants according to the Fig. 4 and Fig. 7, the fastening of the bearing block 72 is primarily achieved by attaching it to the surfaces 76A, 76B in a radial movement relative to the axis A. However, in these variants, there is the option of attaching the bearing block 72 to the surfaces 76A, 76B by a movement parallel to the longitudinal direction of the axle element 1.

[0049] The screw connections 75A, 75B each comprise a screw which is supported by its screw head on the bearing block 72, which passes with its shank or threaded portion through a through-opening in the bearing block 72, and which engages with its thread into a threaded hole 87 of the bracket 71 which opens onto the respective fastening surface 76A, 76B.

[0050] In the second embodiment, which is shown in the Fig. 5 to Fig. 7, only one carrier 50 is present, which combines the functions of carrier and brake carrier. This common carrier 50 forms the base body 71, which is designed as a fork with a first and a second leg 106A, 106B. This base body 71 is mounted radially to the longitudinal center axis A on the axle element 1. On the legs 106A, 106B, facing inner surfaces are formed. According to Fig. 7, the axle element 1 has a first contact surface 107A for contacting the inner surface of the first leg 106A, and a second contact surface 107B parallel to the first contact surface 107A for contacting the inner surface of the second leg 106B.

[0051] Each of the two legs 106A, 106B of the fork is provided with an opening 126, which is arranged coaxially with the opening 126 in the other leg 106B, 106A, and coaxially with a through-hole 127 in the axle element 1, which extends between the contact surfaces 107A, 107B. A connecting element 136 designed as a transverse bolt is guided simultaneously through the bores or threaded bores 126 in the legs 106A, 106B and through the through-hole 127 in the axle element 1. The connecting element 136 is a screw bolt here. It serves to radially fix the base body 71, which is designed as a fork.

[0052] The axle element 1 has a third and a fourth contact surface 107C, 107D for the fork portion of the brake carrier 100, wherein a bore extends radially from the respective contact surface 107C, 107D toward the longitudinal center axis A. The axial position of the brake carrier 100 on the axle element 1 can thus be changed between the contact surfaces 107C, 107D on the one hand and 107A, 107B on the other hand, in order to adapt to the respective offset of the vehicle wheel.

[0053] For this purpose, the two contact surfaces 107C, 107D are identically designed, but are offset in the axial direction from the two contact surfaces 107A, 107B. All four contact surfaces 107A-107D are parallel to each other. Furthermore, the contact surfaces 107A, 107C are located in a common plane, and the contact surfaces 107B, 107D are located in a common plane.

[0054] The bores 127 in the axle element 1 are preferably two longitudinal sections of an overall continuous opening, which thus extends between the first contact surface 107B or 107D and the second contact surface 107A or 107C.

[0055] The common support 100 is formed in two parts, consisting of the base body 71, designed as a forked section, and the bearing block 72 detachably attached thereto. The bearing block 72, together with the base body 71, completely encloses the axle element 1.

[0056] The bearing block 72 has a first and a second through-bore 74, each of which receives a screw 75A, 75B for releasably fastening the bearing block 72 to the base body 71. The through-bores 74 are threadless, while the bores in the base body 71 are threaded holes 87 for the fastening elements designed as screws 75A, 75B. The two bores 87 in the bearing block 72 are arranged tangentially with respect to the longitudinal axis A of the axle element 1.

[0057] As in the first embodiment, the bearing block 72 has a first and a second short leg, the first leg being screwed to the end face of the first leg 106A of the fork section, and the second leg being screwed to the end face of the second leg 106B of the fork. These two end faces thus form the surfaces or fastening surfaces 76A and 76B, which, as in the first embodiment, lie in the plane E, which extends parallel to a plane along the longitudinal axis A.

[0058] The two legs 106A, 106B of the fork-shaped base body 71 of the carrier 50 are connected to one another via a bridge section 130, wherein there is a radial free space between the inner side of this bridge section 130 facing the axle element 1 and the axle element 1.

[0059] On the base body 71, facing away from the free ends of the two legs 106A, 106B, the bearing pins 43 for pivotably supporting the two brake shoes of the drum brake are formed or fastened. As in the first embodiment, the pivot bearing 51 arranged parallel to the longitudinal axis A for rotatably supporting the shaft 54 ​​( Fig. 4) trained.

[0060] Also in the third embodiment, which is shown in the Fig. 8 to Fig. As shown in Figure 10, only one carrier 50, or brake carrier, is present, which combines both carrier functions. This carrier is again a base body 71 designed as a fork with a first and a second leg 106A, 106B, and is mounted radially to the longitudinal center axis A on the axle element 1.

[0061] The common support 50 is again formed in two parts, consisting of the base body 71, designed as a fork section, and the bearing block 72 detachably attached thereto. The bearing block 72 closes the fork and, together with the base body 71, completely encloses the axle element 1.

[0062] The bearing block 72 has a first and a second through-bore 94, each of which receives a screw 95A, 95B for releasably fastening the bearing block 72 to the base body 71. Unlike the second embodiment, the bores 94 in the bearing block 72, the bores 98 in the legs 106A, 106B, and the screws 95A, 95B penetrating both bores 94, 98 are arranged such that the axes of the bores 94, 98 and the screw connections 95A, 95B run parallel to the longitudinal axis A of the axle element 1.

[0063] The bearing block 72 has a first and a second leg. The first leg is screwed in the direction of the longitudinal axis A against the first leg 106A of the base body 71, and the second leg is also screwed in the direction of the longitudinal axis A against the second leg 106B of the base body 71. Furthermore, surfaces 96A and 96B are formed on the legs 106A, 106B, but not on their end faces, against which the bearing block 72 is supported. The surfaces 96A, 96B, in turn, lie in a plane E, which extends parallel to a plane in the longitudinal axis A.

[0064] Each of the two surfaces 96A, 96B lying in plane E is formed by the wall of a groove with which the respective leg 106A, 106B is provided on its side facing the axle tube 3. The two legs of the bearing block 72 are each provided with a tongue 99 corresponding to the groove (tongue and groove connection). The screws 95A, 95B are each located outside the groove or tongue 99. Centering surfaces 81, 82 on the base body 71 and the bearing block 72 align these components with each other in a direction transverse to the longitudinal extent of the axle element 1 ( Fig. 10).

[0065] In the third embodiment, the bearing pins 43 for pivotably supporting the two brake shoes of the drum brake are also formed or fastened on the base body 71, facing away from the ends of the two legs 106A, 106B.

[0066] On the bearing block 72, the pivot bearing 51 is arranged parallel to the longitudinal axis A for the rotatable mounting of the shaft 54 ​​( Fig. 4) trained. List of reference symbols 1 axle element 2 steering knuckles 3 axle tube 4 Fastening section 5 basic bodies 6 first console 6A first mounting surface 6B second mounting surface 7 second console 7A first mounting surface 7B second mounting surface 26.1 Borehole 26.2 Borehole 27.1 Borehole 27.2 Borehole 36.1 Screw 36.2 Screw 37.1 Screw 37.2 Screw 38 screw head 40 second carrier, brake carrier 43 bearing journals 46 first support leg 47 second support leg 48 bridge section 49 Inside 50 carriers 51 pivot bearings 53 Drive section 54 shaft 55 Cam element, expanding cam 56 first additional support leg 57 second additional support leg 58 bridge section 59 Inside 71 basic bodies 72 bearing block 74 through hole 75A screw connection, screw 75B screw connection, screw 76A surface; mounting surface 76B Surface, mounting surface 80 recess 81 Surface, centering surface 82 Surface, centering surface 87 threaded hole 94 Through hole 95A screw connection, screw 95B screw connection, screw 96A area 96B area 98 bore 99 spring 106A Leg 106B Thigh 107A contact surface 107B contact surface 107C contact surface 107D contact surface 126 Opening 127 passage opening 130 bridge section 136 Fastener, screw bolt A Longitudinal axis E Level N surface normal

Claims

[1] Brake arrangement for a commercial vehicle, with an axle element (1) for supporting a wheel hub and with a drum brake, which comprises at least one brake drum rotatable with the wheel hub and a carrier (50) connected to the axle element (1) for a brake camshaft of the drum brake, wherein the brake camshaft is a rotationally fixed unit comprising a cam element (55) working against the brake shoes of the drum brake, a shaft (54) extending parallel to the longitudinal axis (A) of the axle element (1) and a drive section (53), and wherein the carrier (50) is provided with a pivot bearing (51) for radially supporting the shaft (54), through which the shaft (54) passes, characterized byin that the support (50) is composed of a base body (71) connected to the axle element (1) and a bearing block (72) which directly receives the pivot bearing (51) in a through-opening and is detachably fastened to the base body (71), wherein the bearing block (72) is supported against a surface (76A, 76B, 96A, 96B) of the base body (71) which lies in a plane (E) which extends parallel to the longitudinal axis (A) of the axle element (1). [2] Brake arrangement according to claim 1, characterized by that the plane (E) in which the surface (76A, 76B, 96A, 96B) lies also extends parallel to a plane in which the longitudinal axis (A) lies. [3] Brake arrangement according to claim 1 or 2, characterized by that the bearing block (72) is screwed to the base body (71), the axis of the screw connection (75A, 75B) running perpendicular to the surface (76A, 76B). [4] Brake arrangement according to claim 3, characterized bya total of two screw connections (75A, 75B), the axes of which run on different sides of a plane spanned by the longitudinal axis (A) of the axle element (1) and a straight line arranged parallel to one of the axes of the two screw connections (85A, 75B). [5] Brake arrangement according to claim 1 or 2, characterized by that the bearing block (72) is screwed to the base body (71) via two screw connections (95A, 95B), the axes of which run parallel to the longitudinal axis (A) of the axle element (1). [6] Brake arrangement according to one of the preceding claims, characterized by Centering means which align the bearing block (72) and the base body (71) in a direction transverse to the longitudinal extent of the axle element (1). [7] Brake arrangement according to claim 6 in conjunction with claim 4 or 5, characterized by that the centering means are arranged between the screw connections (75 A, 75B, 95A, 95B). [8] Brake arrangement according to claim 6 or 7, characterized by that the centering means are pairs of surfaces, each consisting of a surface (82) on the bearing block (72) and an opposite surface (81) on the base body (71), the surfaces (82, 81) extending parallel to a plane in which the longitudinal axis (A) lies. [9] Brake arrangement according to one of claims 6 to 8, characterized by that the centering means are designed exclusively for mutual alignment transversely to the longitudinal direction of the axle element (1) and not for mutual alignment parallel to the longitudinal direction of the axle element (1). [10] Brake arrangement according to one of claims 1 to 9, characterized by a second carrier (40) which is designed as a brake carrier with one or more bearing pins (43) for pivotably supporting the two brake shoes of the drum brake. [11] Brake arrangement according to claim 10, characterized bythat the second support (40) is also fastened to the axle element (1), wherein the first support (50) and the second support (40) are attached to the axle element (1) from opposite sides. [12] Brake arrangement according to one of claims 1 to 9, characterized by that the base body (71) simultaneously forms a brake carrier with one or more bearing pins (43) for pivotably supporting the two brake shoes of the drum brake.

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