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WO2001092749A1 - Air-suspended axle structure provided with a braking device - Google Patents

Air-suspended axle structure provided with a braking device Download PDF

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Publication number
WO2001092749A1
WO2001092749A1 PCT/EP2001/006280 EP0106280W WO0192749A1 WO 2001092749 A1 WO2001092749 A1 WO 2001092749A1 EP 0106280 W EP0106280 W EP 0106280W WO 0192749 A1 WO0192749 A1 WO 0192749A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric motor
axle
brake
drive shaft
ball screw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2001/006280
Other languages
German (de)
French (fr)
Inventor
Reinhold Pittius
Michael Pehle
Rupert Habersatter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BPW Bergische Achsen KG
Original Assignee
BPW Bergische Achsen KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BPW Bergische Achsen KG filed Critical BPW Bergische Achsen KG
Priority to EP01943471A priority Critical patent/EP1287270A1/en
Priority to AU2001266045A priority patent/AU2001266045A1/en
Publication of WO2001092749A1 publication Critical patent/WO2001092749A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • F16D65/183—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes with force-transmitting members arranged side by side acting on a spot type force-applying member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
    • F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
    • F16D55/36—Brakes with a plurality of rotating discs all lying side by side
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0008—Brake supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0016—Brake calipers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0062—Partly lined, i.e. braking surface extending over only a part of the disc circumference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40—Screw-and-nut
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/56—Shafts for transmitting torque directly

Definitions

  • the invention relates to an axle construction provided with a braking device, in particular for air-sprung vehicle trailers, with a brake caliper arranged on the axle body and brake linings guided therein, between which at least one brake disk which is non-rotatable with respect to the vehicle wheel is arranged, and with a brake disk attached to the brake caliper and by an electric motor Drivable actuating device for generating the brake application pressure directed towards the brake disc.
  • Disc brakes are already known in which the application pressure is applied by means of an electric motor.
  • the electric motor and the actuating device are arranged as integrated components on the brake caliper of the disc brake.
  • a braking device is not suitable for air-suspended axle constructions of vehicle trailers.
  • the invention is based on the objective of creating an axle construction, in particular for air-sprung vehicle trailers, with a braking device in a maintenance-friendly and flexible construction.
  • the electric motor is fastened to the axle body separately from the actuating device, and that the electric motor and actuating device are connected to one another in a rotationally fixed manner via a drive shaft which are transverse to the direction of travel and in extends substantially parallel to the axle beam.
  • the construction according to the invention is particularly suitable for use in air-suspended axle constructions of vehicle trailers. For example, it is possible to fasten the electric motor inwards on the axle body so that a collision with the other parts of the axle construction and in particular the trailing arm of the vehicle axle cannot occur.
  • Another advantage is the flexible design, since different spatial conditions can be taken into account in the respective axle constructions by appropriately adapting the length of the drive shaft.
  • Another advantage is the maintenance-friendly design due to the spatial separation of the electric motor from the actuating device, so that both parts are easily accessible for maintenance work.
  • a maintenance-friendly and simple assembly of the braking device also contributes if, according to a preferred embodiment, the drive shaft is rotatably mounted exclusively on the actuating device on the one hand and in the area of the electric motor on the other hand and it extends freely between these two storage locations.
  • the drive shaft is rotatably mounted exclusively on the actuating device on the one hand and in the area of the electric motor on the other hand and it extends freely between these two storage locations.
  • one of the two rotary bearings of the drive shaft is located within the housing of the electric motor.
  • one of the two rotary bearings of the drive shaft take place in a flange fastened to the axle body, to which the housing of the electric motor is fastened.
  • the drive shaft is guided under the longitudinal link of the axle construction connected to the axle body.
  • the electric motor should preferably be arranged between the trailing arm and the vehicle center axis.
  • the electric motor is fastened to the axle body by means of a clamp around it.
  • the drive shaft is assembled by first inserting its outer end into the actuating device arranged on the brake caliper when the clamp is released, and then the electric motor is pushed onto the other end of the drive shaft by means of the released clamp, before finally the fastening elements of the clamp are tightened.
  • the drive shaft is dismantled in the reverse order.
  • a further embodiment of the invention is characterized by a gear arranged in the power flow between the electric motor and drive shaft and arranged together with the electric motor in the same housing.
  • the actuating device has a ball screw spindle connected to the drive shaft in a rotationally fixed manner for generating the pressure of the brake pads on the brake disc, the ball screw spindle together with one on it arranged ball screw nut forms a ball screw drive and performs an infeed movement when actuating the actuating device in each case only one of the brake pads arranged on both sides of the brake disc.
  • this can be fastened to the axle body in a simple manner by means of a fastening element.
  • the brake caliper of the braking device is designed as a fixed caliper and for this purpose the ball screw spindle of the actuating device and the drive shaft are arranged axially immovably relative to the axle body and the brake caliper, and the ball screw nut Part of a yoke for transmitting an axial movement of the ball screw drive to at least one pressure ram that can be moved against one of the brake linings.
  • the yoke be designed as a ball screw nut for transmitting the axial movement of the ball screw drive to two pressure stamps.
  • the invention is not limited to a brake device of the fixed caliper type, it can also be applied to floating caliper brakes. Because in this case the brake caliper including the actuating device can be displaced in relation to the axle body, it is proposed with a further embodiment of the invention that the drive shaft enables axial compensation. This can be achieved with an axially displaceable torque transmission with balls interposed, preferably between the driven part of the transmission and the drive shaft. Such a ball drive allows low-friction, efficient axial compensation with complete torque transmission.
  • FIG. 1 shows a perspective, partially sectioned illustration of an air-sprung axle construction of a trailer axle including the braking device and the vehicle wheel with rim
  • FIG. 2 shows the objects according to FIG. 1 according to another embodiment
  • FIG. 3 shows a drive motor with an integrated gear for the braking device in an enlarged representation compared to FIG. 2,
  • Figure 4 is a plan view of a brake device with a caliper after
  • FIG. 5 shows a side view of the braking device according to FIG. 4,
  • FIG. 6 shows a diagram of the braking device
  • Figure 7 is an enlarged view of the actuating device according to Figure 4.
  • FIG. 8 shows a diagrammatic representation of a toothing with negative view
  • FIG. 9 shows a diagrammatic representation of the brake caliper with the adjusting device
  • FIG. 10 shows a view of a brake lining with lateral guide edges
  • Figure 11 is a perspective view of a support plate of the brake caliper with a bearing plate
  • Figure 12 is a graphical representation on the bearing plate of the brake caliper with a screwed housing for the actuating device.
  • FIG. 1 shows the axle construction of an air-sprung vehicle trailer with the trailing arm 1 supported by an air bellows on the vehicle frame and the axle body 2 running transversely to it and to the direction of travel.
  • the axle body 2 is provided at its end with an axle stub on which the roller bearings support the Wheel hub 3 of the driveless vehicle wheel is mounted.
  • a brake device designed as a disc brake, which essentially consists of a brake caliper 4 with an actuating device 5 and a drive.
  • the brake application pressure directed towards the brake disc is generated by means of the actuating device 5.
  • the actuating device is driven by an electric motor 6, which is attached to the axle body 2 in a straight alignment with the actuating device 5.
  • a reduction gear is integrated into the housing of the electric motor 6.
  • the electric motor 6 is not attached or flanged directly to the actuating device 5, but rather separately from the actuating device on the axle body.
  • the electric motor 6 and the actuating device 5 are connected to one another in a rotationally fixed manner via a drive shaft 7.
  • the approximately 40 to 80 cm long drive shaft 7 extends transversely to the direction of travel and, as can be seen in FIG. 1, essentially parallel to the axle body 2.
  • the drive shaft 7 is preferably connected to the actuating device and the electric motor by means of splines formed at both ends.
  • the drive shaft 7 is first in the corresponding Wedge teeth of the actuating device 5 inserted, then the electric motor 6 is plugged onto the other end of the drive shaft 7 from the other side and the electric motor is fastened to the axle body 2 in this position. A separate fixation of the drive shaft 7 in the axial direction is therefore not necessary.
  • the electric motor 6 is screwed with its housing onto a flange 8 a, which in turn is welded onto the axle body 2.
  • the housing of the electric motor is fastened on a plate 8b, which in turn is screwed to a shell.
  • the shell and plate together form a clamp 8c which engages around the axle body 2 in its tubular middle section. After loosening the screw connection, the clamp 8c can advantageously be fastened to the axle body 2 in different longitudinal positions.
  • the drive shaft 7 is guided under the trailing arm 1 of the axle construction connected to the axle body.
  • the electric motor is well protected against the effects of dirt in an area of the axle construction which offers favorable space conditions. Since the electric motor 6 is fastened to the front end face of the axle body 2, its overall height is hardly larger than the overall height of the axle body itself.
  • the brake caliper 4 is designed as a fixed caliper, so that both the brake caliper and the electric motor are rigidly connected to the axle body and relative movements cannot occur. If, on the other hand, the brake caliper is designed as a floating caliper, relative movements between the brake caliper with the actuating device and the electric motor occur during driving operation. In this case, the drive shaft 7 must allow axial compensation. This can be achieved with an axially displaceable torque transmission with balls interposed, preferably between the driven part of the transmission and the drive shaft.
  • Figures 4 and 5 show details of the braking device. One or two axially displaceable brake disks 10 and a corresponding number of brake pads 11 are located in the brake caliper 4.
  • the braking device is arranged in the vehicle wheel, and a part of the actuating device 5 can protrude from the wheel.
  • the brake caliper is a fixed caliper and, as such, is made in one piece. It is firmly connected to the axle tube 2, so that the brake caliper 4 is held freely projecting towards the end of a wheel hub 13.
  • the brake caliper 4 has, for attachment to a flange 2a of the axle tube 2, from a thickened central part 16a, in the bearing plate 16, legs 14 and 15 protruding and offset on both sides, which is shown in more detail in FIG.
  • the brake caliper 4 is connected to the flange 2a by screwing means 17, the flange 2a being arranged in the stepped portions of the legs 14, 15. It encompasses the axle tube 2 and is preferably connected to it by welding.
  • the brake caliper 4 has - in relation to the wheel - in addition to the front bearing plate 16 at a parallel distance from it a support plate 18, these plates 16 and 18 preferably being formed in one piece via a saddle bridge 19. Furthermore, the brake caliper 4 can also have multiple parts.
  • the brake pads 11 can be slid on guide edges 22, 23 on the respective pad backing plates on corresponding guide edges 25, 26 of the brake caliper 4.
  • the shape of the guide edges 22, 23 and 25, 26 are designed according to the requirements. In the drawings, these guide edges are only shown schematically.
  • the brake disks 10 are each arranged between the brake pads 11 and axially displaceable on the wheel hub 13 in at least one drive toothing 27, for example an involute toothing.
  • the brake linings or the brake disks are supported during the braking process on the support plate 18 of the brake caliper 4. This can have ribs 28 and similar elevations on their inner surface, so that an optimal contact is ensured.
  • a closed housing 20 is connected to the bearing plate 16 by screwing means 21, in which the actuating device 5 for braking actuation is arranged and stored in a protected manner.
  • the actuating device 5 essentially comprises a ball screw drive with a spindle 30, in particular a ball screw spindle, which is rotated by means of the spline shaft 45 arranged rotatably but not axially displaceably in the housing 20.
  • the drive shaft 7 is placed on the spline shaft 45.
  • a ball screw 35 is arranged in the one-piece yoke 36, which in its end position lies against an end face 37 of the housing 20.
  • the ball screws interact with balls arranged in between.
  • the ball screw spindle 30, which is preferably made in one piece with the spline shaft 45, is therefore arranged axially immovably with respect to the steering knuckle.
  • the spindle 30 is rotatably supported in the bearing plate 16 of the brake caliper 4 and in the housing neck 32 via a respective bearing 31 and 33, the bearing plate 16 forming an abutment for the screw drive.
  • the pressure stamps 39, 40 are displaceable on slide bearings G, which are fixedly arranged in the bearing plate 16.
  • the punches 39, 40 are displaceable on slide bearings G1, which are each arranged in the sleeve of the punches 39, 40.
  • the spindle 30 is rotatably supported in the bearing plate 16 by means of a thrust washer A.
  • a pressure ram 39 and 40 is arranged on both sides of the spindle 30, which are guided axially displaceably by bolts 41, 42 held in the housing 20.
  • ram heads 43, 44 are provided which are guided and supported in the bearing plate 16 of the brake caliper 4.
  • the two pressure rams 39, 40 are preferably arranged in a plane XX with the spindle 30, the pressure forces acting approximately in the center of the brake pads, which is shown in more detail in FIG. 10. Furthermore, the ball screw 30 is arranged approximately axially parallel to the axis of rotation R of the brake disc 10. In the exemplary embodiment, two pressure stamps 39, 40 are shown, which is necessary because of the size of the brake lining. Designs with more than two pressure stamps are also conceivable, or only one pressure stamp can be used for relatively small brake pads, which can then be arranged coaxially with the spindle 30, for example.
  • the pressure stamps 39, 40 preferably consist of a sleeve element so that an internal guidance can take place via the bolts 41, 42. Full stamps with outside guidance via sleeves are also possible. Torque is also supported via these bolts 41, 42.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention relates to an air-suspended axle structure, which is provided with a braking device and which is to be used, in particular, in vehicle trailers. An integral part of the braking device is an adjusting device (5), which is fastened to the brake caliper (4) and which can be driven by an electric motor (6). Said adjusting device is provided for generating the brake application pressure directed toward the brake disk (10). The aim of the invention is to obtain an easy to maintain and versatile braking device design inside the axle structure. To this end, the electric motor (6) is fastened to the axle body (2) separate from the adjusting device (5). The electric motor (6) and the adjusting device (5) are connected to one another in a rotationally fixed manner via a drive shaft (7), which extends perpendicular to the direction of travel and essentially parallel to the axle body (2).

Description

Mit einer Bremseinrichtung versehene, luftqefederte Achskonstruktion Air-sprung axle construction with a braking device

Die Erfindung betrifft eine mit einer Bremseinrichtung versehene Achskonstruktion, insbesondere für luftgefederte Fahrzeuganhänger, mit einem an dem Achskörper angeordneten Bremssattel und darin geführten Bremsbelägen, zwischen denen mindestens eine bezüglich des Fahrzeugrades drehfeste Bremsscheibe angeordnet ist, und mit einer an dem Bremssattel befestigten und durch einen Elektromotor antreibbaren Stelleinrichtung zur Erzeugung des in Richtung auf die Bremsscheibe gerichteten Zuspanndrucks der Bremse.The invention relates to an axle construction provided with a braking device, in particular for air-sprung vehicle trailers, with a brake caliper arranged on the axle body and brake linings guided therein, between which at least one brake disk which is non-rotatable with respect to the vehicle wheel is arranged, and with a brake disk attached to the brake caliper and by an electric motor Drivable actuating device for generating the brake application pressure directed towards the brake disc.

Es sind bereits Scheibenbremsen bekannt, bei denen mittels eines Elektromotors der Zuspanndruck aufgebracht wird. Hierbei sind Elektromotor und Stelleinrichtung als integrierte Bauteile an dem Bremssattel der Scheibenbremse angeordnet. Eine solche Bremseinrichtung eignet sich aufgrund ihrer baulichen Gegebenheiten jedoch nicht für luftgefederte Achskonstruktionen von Fahrzeuganhängern.Disc brakes are already known in which the application pressure is applied by means of an electric motor. Here, the electric motor and the actuating device are arranged as integrated components on the brake caliper of the disc brake. However, due to its structural conditions, such a braking device is not suitable for air-suspended axle constructions of vehicle trailers.

Der Erfindung liegt die A u f g a b e zugrunde, eine Achskonstruktion insbesondere für luftgefederte Fahrzeuganhänger mit einer Bremseinrichtung in wartungsfreundlicher und flexibler Bauweise zu schaffen.The invention is based on the objective of creating an axle construction, in particular for air-sprung vehicle trailers, with a braking device in a maintenance-friendly and flexible construction.

Zur L ö s u n g dieser Aufgabe wird bei einer Achskonstruktion mit den eingangs genannten Merkmalen vorgeschlagen, daß der Elektromotor getrennt von der Stelleinrichtung an dem Achskörper befestigt ist, und daß Elektromotor und Stelleinrichtung über eine Antriebswelle drehfest miteinander verbunden sind, die sich quer zur Fahrtrichtung und im wesentlichen parallel zum Achskörper erstreckt. In Folge der räumlichen Trennung des Bremssattels mit der Stelleinrichtung einerseits und des Elektromotors andererseits ist die erfindungsgemäße Konstruktion in besondere Weise für den Einsatz in luftgefederten Achskonstruktionen von Fahrzeuganhängern geeignet. So ist es zum Beispiel möglich, den Elektromotor so weit einwärts an dem Achskörper zu befestigen, daß eine Kollision mit den übrigen Teilen der Achskonstruktion und insbesondere dem Längslenker der Fahrzeugachse nicht eintreten kann. Von Vorteil ist ferner die flexible Bauweise, da durch entsprechende Anpassung der Länge der Antriebswelle unterschiedlichen räumlichen Gegebenheiten bei den jeweiligen Achskonstruktionen Rechnung getragen werden kann. Von Vorteil ist ferner die wartungsfreundliche Bauweise durch die räumliche Trennung des Elektromotors von der Stelleinrichtung, wodurch beide Teile für Wartungsarbeiten gut zugänglich sind.To solve this problem, it is proposed in an axle construction with the features mentioned at the outset that the electric motor is fastened to the axle body separately from the actuating device, and that the electric motor and actuating device are connected to one another in a rotationally fixed manner via a drive shaft which are transverse to the direction of travel and in extends substantially parallel to the axle beam. As a result of the spatial separation of the brake caliper with the actuating device on the one hand and the electric motor on the other hand, the construction according to the invention is particularly suitable for use in air-suspended axle constructions of vehicle trailers. For example, it is possible to fasten the electric motor inwards on the axle body so that a collision with the other parts of the axle construction and in particular the trailing arm of the vehicle axle cannot occur. Another advantage is the flexible design, since different spatial conditions can be taken into account in the respective axle constructions by appropriately adapting the length of the drive shaft. Another advantage is the maintenance-friendly design due to the spatial separation of the electric motor from the actuating device, so that both parts are easily accessible for maintenance work.

Zu einer wartungsfreundlichen und einfachen Montage der Bremseinrichtung trägt ferner bei, wenn gemäß einer bevorzugten Ausgestaltung die Antriebswelle ausschließlich an der Stelleinrichtung einerseits und im Bereich des Elektromotors andererseits drehbar gelagert ist und sie sich zwischen diesen beiden Lagerorten frei erstreckt. Hierzu wird ferner vorgeschlagen, daß sich die eine der beiden Drehlagerungen der Antriebswelle innerhalb des Gehäuses des Elektromotors befindet. Alternativ wird vorgeschlagen, daß die eine der beiden Drehlagerungen der Antriebswelle in einem an dem Achskörper befestigten Flansch erfolgt, an dem das Gehäuse des Elektromotors befestigt ist.A maintenance-friendly and simple assembly of the braking device also contributes if, according to a preferred embodiment, the drive shaft is rotatably mounted exclusively on the actuating device on the one hand and in the area of the electric motor on the other hand and it extends freely between these two storage locations. For this purpose, it is also proposed that one of the two rotary bearings of the drive shaft is located within the housing of the electric motor. Alternatively, it is proposed that one of the two rotary bearings of the drive shaft take place in a flange fastened to the axle body, to which the housing of the electric motor is fastened.

Im Hinblick auf die besondere bauliche Situation bei einer luftgefederten Achskonstruktion für Fahrzeuganhänger wird mit einer weiteren Ausgestaltung vorgeschlagen, daß die Antriebswelle unter dem mit dem Achskörper verbundenen Längslenker der Achskonstruktion hindurch geführt ist. In diesem Fall sollte der Elektromotor vorzugsweise zwischen Längslenker und Fahrzeugmittelachse angeordnet sein.In view of the special structural situation in the case of an air-suspended axle construction for vehicle trailers, it is proposed with a further embodiment that the drive shaft is guided under the longitudinal link of the axle construction connected to the axle body. In this case, the electric motor should preferably be arranged between the trailing arm and the vehicle center axis.

Zwecks Vereinfachung der Montage der Antriebswelle wird mit einer weiteren Ausgestaltung vorgeschlagen, daß der Elektromotor mittels einer den Achskörper umgreifenden Schelle an diesem befestigt ist. In diesem Fall erfolgt die Montage der Antriebswelle, indem diese bei gelöster Schelle zunächst mit ihrem äußeren Ende in die an dem Bremssattel angeordnete Stelleinrichtung eingeführt wird, und sodann der Elektromotor mittels der gelösten Schelle auf das andere Ende der Antriebswelle aufgeschoben wird, bevor schließlich die Befestigungselemente der Schelle angezogen werden. Die Demontage der Antriebswelle erfolgt in umgekehrter Reihenfolge.In order to simplify the assembly of the drive shaft, it is proposed with a further embodiment that the electric motor is fastened to the axle body by means of a clamp around it. In this case, the drive shaft is assembled by first inserting its outer end into the actuating device arranged on the brake caliper when the clamp is released, and then the electric motor is pushed onto the other end of the drive shaft by means of the released clamp, before finally the fastening elements of the clamp are tightened. The drive shaft is dismantled in the reverse order.

Eine weitere Ausgestaltung der Erfindung ist gekennzeichnet durch ein im Kraftfluß zwischen Elektromotor und Antriebswelle angeordnetes, gemeinsam mit dem Elektromotor im selben Gehäuse angeordnetes Getriebe.A further embodiment of the invention is characterized by a gear arranged in the power flow between the electric motor and drive shaft and arranged together with the electric motor in the same housing.

Um die Bremseinrichtung kompakt und kleinbauend zu halten und einen optimalen Wirkungsgrad zu erzielen, wird mit einer weiteren Ausgestaltung vorgeschlagen, daß die Stelleinrichtung eine mit der Antriebswelle drehfest verbundene Kugelgewindespindel zur Erzeugung des Drucks der Bremsbeläge auf die Bremsscheibe aufweist, wobei die Kugelgewindespindel gemeinsam mit einer darauf angeordneten Kugelgewindemutter einen Kugelgewindetrieb bildet und bei einer Betätigung der Stelleinrichtung jeweils nur einer der beiderseits der Bremsscheibe angeordneten Bremsbeläge eine Zustellbewegung ausführt. Es läßt sich auf diese Weise ein gewichtmäßig leichter und kompakter Bremssattel einschließlich Stelleinrichtung erzielen. Dieser ist, ebenso wie der elektrische Antriebsmotor, in einfacher Weise mittels eines Befestigungselements an dem Achskörper befestigbar.In order to keep the braking device compact and small in size and to achieve optimum efficiency, it is proposed with a further embodiment that the actuating device has a ball screw spindle connected to the drive shaft in a rotationally fixed manner for generating the pressure of the brake pads on the brake disc, the ball screw spindle together with one on it arranged ball screw nut forms a ball screw drive and performs an infeed movement when actuating the actuating device in each case only one of the brake pads arranged on both sides of the brake disc. In this way it is possible to achieve a lightweight and compact brake caliper including adjusting device. Like the electric drive motor, this can be fastened to the axle body in a simple manner by means of a fastening element.

Es wirkt sich auf die Größe des Aufnahmeraums vorteilig aus und vereinfacht die Kraftübertragung sowie die Drehlagerung, wenn der Bremssattel der Bremseinrichtung als Festsattel ausgebildet ist und hierzu die Kugelgewindespindel der Stelleinrichtung sowie die Antriebswelle axial unverschiebbar gegenüber dem Achskörper und dem Bremssattel angeordnet sind, und die Kugelgewindemutter Bestandteil eines Joches zur Übertragung einer axialen Bewegung des Kugelgewindetriebs auf mindestens einen gegen einen der Bremsbeläge verfahrbaren Druckstempel ist.It has an advantageous effect on the size of the receiving space and simplifies the transmission of power and the rotary mounting if the brake caliper of the braking device is designed as a fixed caliper and for this purpose the ball screw spindle of the actuating device and the drive shaft are arranged axially immovably relative to the axle body and the brake caliper, and the ball screw nut Part of a yoke for transmitting an axial movement of the ball screw drive to at least one pressure ram that can be moved against one of the brake linings.

In weiterer Ausgestaltung der Stelleinrichtung wird vorgeschlagen, daß das Joch als Kugelgewindemutter zur Übertragung der axialen Bewegung des Kugelgewindetriebs auf zwei Druckstempel ausgebildet ist. Die Erfindung ist nicht auf eine Bremseinrichtung nach dem Festsattel-Typ beschränkt, sie läßt sich auch bei Schwimmsattel-Bremsen anwenden. Weil in diesem Fall der Bremssattel einschließlich der Stelleinrichtung in Bezug zu dem Achskörper verlagerbar ist, wird mit einer weiteren Ausgestaltung der Erfindung vorgeschlagen, daß die Antriebswelle einen axialen Ausgleich ermöglicht. Dies ist mit einer axial verschiebbaren Drehmomentübertragung mit zwischengeschalteten Kugeln erreichbar, vorzugsweise zwischen dem Abtriebsteil des Getriebes und der Antriebswelle. Ein solcher Kugeltrieb läßt einen reibungsarmen effizienten Axialausgleich bei zugleich vollständiger Drehmomentübertragung zu.In a further embodiment of the actuating device, it is proposed that the yoke be designed as a ball screw nut for transmitting the axial movement of the ball screw drive to two pressure stamps. The invention is not limited to a brake device of the fixed caliper type, it can also be applied to floating caliper brakes. Because in this case the brake caliper including the actuating device can be displaced in relation to the axle body, it is proposed with a further embodiment of the invention that the drive shaft enables axial compensation. This can be achieved with an axially displaceable torque transmission with balls interposed, preferably between the driven part of the transmission and the drive shaft. Such a ball drive allows low-friction, efficient axial compensation with complete torque transmission.

Ausführungsbeispiele der Erfindung sind auf der Zeichnung dargestellt und werden nachfolgend näher beschrieben. Es zeigen:Embodiments of the invention are shown in the drawing and are described in more detail below. Show it:

Figur 1 in perspektivischer, teilweise geschnittener Darstellung eine luftgefederte Achskonstruktion einer Anhängerachse einschließlich der Bremseinrichtung und dem Fahrzeugrad mit Felge,FIG. 1 shows a perspective, partially sectioned illustration of an air-sprung axle construction of a trailer axle including the braking device and the vehicle wheel with rim,

Figur 2 die Gegenstände nach Figur 1 gemäß einer anderen Ausführungsform,2 shows the objects according to FIG. 1 according to another embodiment,

Figur 3 in gegenüber Figur 2 vergrößerter Darstellung einen Antriebsmotor mit integriertem Getriebe für die Bremseinrichtung,FIG. 3 shows a drive motor with an integrated gear for the braking device in an enlarged representation compared to FIG. 2,

Figur 4 eine Draufsicht auf eine Bremseinrichtung mit Bremssattel nach demFigure 4 is a plan view of a brake device with a caliper after

Festsattel-Prinzip, Stelleinrichtung, Bremsscheiben und Bremsbelägen,Fixed caliper principle, adjusting device, brake discs and brake pads,

Figur 5 eine Seitenansicht auf die Bremseinrichtung nach Figur 4,FIG. 5 shows a side view of the braking device according to FIG. 4,

Figur 6 eine schaubildliche Darstellung der Bremseinrichtung,FIG. 6 shows a diagram of the braking device,

Figur 7 eine vergrößerte Darstellung der Stelleinrichtung gemäß Figur 4 undFigure 7 is an enlarged view of the actuating device according to Figure 4 and

5,5,

Figur 8 eine schaubildliche Darstellung auf eine Mißnahmeverzahnung, Figur 9 eine schaubildliche Darstellung auf den Bremssattel mit Stelleinrichtung,FIG. 8 shows a diagrammatic representation of a toothing with negative view, FIG. 9 shows a diagrammatic representation of the brake caliper with the adjusting device,

Figur 10 eine Ansicht auf einen Bremsbelag mit seitlichen Führungskanten,FIG. 10 shows a view of a brake lining with lateral guide edges,

Figur 11 eine schaubildliche Ansicht auf eine Abstützplatte des Bremssattels mit Lagerplatte undFigure 11 is a perspective view of a support plate of the brake caliper with a bearing plate and

Figur 12 eine schaubildliche Darstellung auf die Lagerplatte des Bremssattels mit angeschraubtem Gehäuse für die Stelleinrichtung.Figure 12 is a graphical representation on the bearing plate of the brake caliper with a screwed housing for the actuating device.

Figur 1 zeigt die Achskonstruktion eines luftgefederten Fahrzeuganhängers mit dem über einen Luftfederbalg an dem Fahrzeugrahmen abgestützten Längslenker 1 und dem quer hierzu sowie zur Fahrtrichtung verlaufenden Achskörper 2. In üblicher Weise ist der Achskörper 2 an seinem Ende mit einem Achsschenkel versehen, auf dem mittels Wälzlagern die Radnabe 3 des antriebslosen Fahrzeugrades gelagert ist. Mit dem Achskörper 2 verbunden ist eine als Scheibenbremse ausgebildete Bremseinrichtung, die sich im wesentlichen aus einem Bremssattel 4 mit Stelleinrichtung 5 und einem Antrieb zusammensetzt. Mittels der Stelleinrichtung 5 wird der in Richtung auf die Bremsscheibe gerichtete Zuspann- druck der Bremse erzeugt. Der Antrieb der Stelleinrichtung erfolgt über einen Elektromotor 6, der in gerader Fluchtung zu der Stelleinrichtung 5 an dem Achskörper 2 befestigt ist. Bei der Ausführungsform nach Fig. 2 und Fig. 3 ist in das Gehäuse des Elektromotors 6 ein Untersetzungsgetriebe integriert.FIG. 1 shows the axle construction of an air-sprung vehicle trailer with the trailing arm 1 supported by an air bellows on the vehicle frame and the axle body 2 running transversely to it and to the direction of travel. In a conventional manner, the axle body 2 is provided at its end with an axle stub on which the roller bearings support the Wheel hub 3 of the driveless vehicle wheel is mounted. Connected to the axle body 2 is a brake device designed as a disc brake, which essentially consists of a brake caliper 4 with an actuating device 5 and a drive. The brake application pressure directed towards the brake disc is generated by means of the actuating device 5. The actuating device is driven by an electric motor 6, which is attached to the axle body 2 in a straight alignment with the actuating device 5. In the embodiment according to FIGS. 2 and 3, a reduction gear is integrated into the housing of the electric motor 6.

Erfindungsgemäß ist der Elektromotor 6 nicht unmittelbar an der Stelleinrichtung 5 befestigt oder angeflanscht, sondern getrennt von der Stelleinrichtung an dem Achskörper. Zur Übertragung des Antriebsmomentes sind Elektromotor 6 und Stelleinrichtung 5 über eine Antriebswelle 7 drehfest miteinander verbunden. Die ca. 40 bis 80 cm lange Antriebswelle 7 erstreckt sich quer zur Fahrtrichtung und, wie die Figur 1 erkennen läßt, im wesentlichen parallel zu dem Achskörper 2.According to the invention, the electric motor 6 is not attached or flanged directly to the actuating device 5, but rather separately from the actuating device on the axle body. To transmit the drive torque, the electric motor 6 and the actuating device 5 are connected to one another in a rotationally fixed manner via a drive shaft 7. The approximately 40 to 80 cm long drive shaft 7 extends transversely to the direction of travel and, as can be seen in FIG. 1, essentially parallel to the axle body 2.

Vorzugsweise ist die Antriebswelle 7 über an ihren beiden Enden ausgebildete Keilverzahnungen mit der Stelleinrichtung und dem Elektromotor verbunden. Zur Montage wird die Antriebswelle 7 zunächst in die korrespondierende Keilverzahnung der Stelleinrichtung 5 eingesteckt, anschließend wird von der anderen Seite her der Elektromotor 6 auf das andere Ende der Antriebswelle 7 aufgesteckt und der Elektromotor in dieser Stellung an dem Achskörper 2 befestigt. Eine gesonderte Fixierung der Antriebswelle 7 in axialer Richtung ist daher nicht erforderlich.The drive shaft 7 is preferably connected to the actuating device and the electric motor by means of splines formed at both ends. For assembly, the drive shaft 7 is first in the corresponding Wedge teeth of the actuating device 5 inserted, then the electric motor 6 is plugged onto the other end of the drive shaft 7 from the other side and the electric motor is fastened to the axle body 2 in this position. A separate fixation of the drive shaft 7 in the axial direction is therefore not necessary.

Bei der Ausführungsform nach Figur 1 ist der Elektromotor 6 mit seinem Gehäuse an einem Flansch 8a angeschraubt, der seinerseits an dem Achskörper 2 angeschweißt ist.In the embodiment according to FIG. 1, the electric motor 6 is screwed with its housing onto a flange 8 a, which in turn is welded onto the axle body 2.

Demgegenüber ist bei der Ausführungsform nach den Figuren 2 und 3 das Gehäuse des Elektromotors auf einer Platte 8b befestigt, die wiederum mit einer Schale verschraubt ist. Schale und Platte bilden zusammen eine Schelle 8c, die den Achskörper 2 in seinem rohrförmigen Mittelabschnitt umgreift. Die Schelle 8c läßt sich nach Lösen der Verschraubung vorteilhafter Weise in unterschiedlichen Längspositionen an dem Achskörper 2 befestigen.In contrast, in the embodiment according to FIGS. 2 and 3, the housing of the electric motor is fastened on a plate 8b, which in turn is screwed to a shell. The shell and plate together form a clamp 8c which engages around the axle body 2 in its tubular middle section. After loosening the screw connection, the clamp 8c can advantageously be fastened to the axle body 2 in different longitudinal positions.

Gemäß den Figuren 1 und 2 ist die Antriebswelle 7 unter dem mit dem Achskörper verbundenen Längslenker 1 der Achskonstruktion hindurch geführt. Auf diese Weise ergibt sich eine gegen Schmutzeinwirkung gut geschützte Unterbringung des Elektromotors in einem günstige Platzverhältnisse bietenden Bereich der Achskonstruktion. Da der Elektromotor 6 an der vorderen Stirnseite des Achskörpers 2 befestigt ist, fällt seine Bauhöhe kaum größer aus, als die Bauhöhe des dahinter angeordneten Achskörpers selbst.According to FIGS. 1 and 2, the drive shaft 7 is guided under the trailing arm 1 of the axle construction connected to the axle body. In this way, the electric motor is well protected against the effects of dirt in an area of the axle construction which offers favorable space conditions. Since the electric motor 6 is fastened to the front end face of the axle body 2, its overall height is hardly larger than the overall height of the axle body itself.

Bei dem Ausführungsbeispiel ist der Bremssattel 4 als Festsattel ausgebildet, so daß sowohl der Bremssattel, als auch der Elektromotor starr mit dem Achskörper verbunden sind und Relativbewegungen nicht auftreten können. Falls der Bremssattel hingegen als Schwimmsattel gestaltet ist, treten im Fahrbetrieb Relativbewegungen zwischen Bremssattel mit Stelleinrichtung und Elektromotor auf. In diesem Fall muß die Antriebswelle 7 einen axialen Ausgleich ermöglichen. Dies ist mit einer axial verschiebbaren Drehmomentübertragung mit zwischengeschalteten Kugeln erreichbar, vorzugsweise zwischen dem Abtriebsteil des Getriebes und der Antriebswelle. In den Figuren 4 und 5 sind Einzelheiten der Bremseinrichtung dargestellt. In dem Bremssattel 4 befinden sich ein oder zwei axial verschiebbare Bremsscheiben 10 und eine entsprechende Anzahl von Bremsbelägen 11. Die Bremseinrichtung ist im Fahrzeugrad angeordnet, wobei ein Teil der Stelleinrichtung 5 aus dem Rad herausragen kann. Der Bremssattel ist beim Ausführungsbeispiel ein Festsattel und als solcher einteilig ausgeführt. Er ist mit dem Achsrohr 2 fest verbunden, so daß der Bremssattel 4 zum Ende einer Radnabe 13 hin frei vorkragend gehalten ist.In the exemplary embodiment, the brake caliper 4 is designed as a fixed caliper, so that both the brake caliper and the electric motor are rigidly connected to the axle body and relative movements cannot occur. If, on the other hand, the brake caliper is designed as a floating caliper, relative movements between the brake caliper with the actuating device and the electric motor occur during driving operation. In this case, the drive shaft 7 must allow axial compensation. This can be achieved with an axially displaceable torque transmission with balls interposed, preferably between the driven part of the transmission and the drive shaft. Figures 4 and 5 show details of the braking device. One or two axially displaceable brake disks 10 and a corresponding number of brake pads 11 are located in the brake caliper 4. The braking device is arranged in the vehicle wheel, and a part of the actuating device 5 can protrude from the wheel. In the exemplary embodiment, the brake caliper is a fixed caliper and, as such, is made in one piece. It is firmly connected to the axle tube 2, so that the brake caliper 4 is held freely projecting towards the end of a wheel hub 13.

Der Bremssattel 4 weist zur Befestigung mit einem Flansch 2a des Achsrohres 2 von einem verdickten Mittenteil 16a, in der Lagerplatte 16 ausgehend zu beiden Seiten abstehende und abgesetzte Schenkel 14 und 15 auf, was in Figur 11 näher dargestellt ist. Mit dem Flansch 2a ist über Schraubmittel 17 der Bremssattel 4 verbunden, wobei der Flansch 2a in den Absetzungen der Schenkel 14, 15 angeordnet ist. Er umgreift das Achsrohr 2 und ist vorzugsweise über eine Schweißung mit diesem verbunden.The brake caliper 4 has, for attachment to a flange 2a of the axle tube 2, from a thickened central part 16a, in the bearing plate 16, legs 14 and 15 protruding and offset on both sides, which is shown in more detail in FIG. The brake caliper 4 is connected to the flange 2a by screwing means 17, the flange 2a being arranged in the stepped portions of the legs 14, 15. It encompasses the axle tube 2 and is preferably connected to it by welding.

Der Bremssattel 4 weist - in bezug auf das Rad - neben der vorderseitigen Lagerplatte 16 in einem parallelen Abstand dazu eine Abstützplatte 18 auf, wobei diese Platten 16 und 18 über eine Sattelbrücke 19 vorzugsweise einteilig ausgebildet sind. Desweiteren kann auch eine Mehrteiligkeit des Bremssattels 4 vorliegen.The brake caliper 4 has - in relation to the wheel - in addition to the front bearing plate 16 at a parallel distance from it a support plate 18, these plates 16 and 18 preferably being formed in one piece via a saddle bridge 19. Furthermore, the brake caliper 4 can also have multiple parts.

Im Bremssattel 4 sind die Bremsbeläge 11 auf Führungskanten 22, 23 an den jeweiligen Belagrückenplatten auf korrespondierenden Führungskanten 25, 26 des Bremssattels 4 gleitend verschiebbar. Die Form der Führungskanten 22, 23 und 25, 26 sind den Erfordernissen entsprechend ausgeführt. In den Zeichnungen sind diese Führungskanten nur schematisch dargestellt.In the brake caliper 4, the brake pads 11 can be slid on guide edges 22, 23 on the respective pad backing plates on corresponding guide edges 25, 26 of the brake caliper 4. The shape of the guide edges 22, 23 and 25, 26 are designed according to the requirements. In the drawings, these guide edges are only shown schematically.

Die Bremsscheiben 10 sind jeweils zwischen den Bremsbelägen 11 angeordnet und auf der Radnabe 13 in mindestens einer Mitnahmeverzahnung 27, beispielsweise einer Evolventenverzahnung axial verschiebbar. Eine Abstützung der Bremsbeläge bzw. der Bremsscheiben erfolgt beim Bremsvorgang an der Abstützplatte 18 des Bremssattels 4. Diese kann Rippen 28 und dergleichen Erhebungen an ihrer Innenfläche aufweisen, damit eine optimale Anlage gewährleistet ist. Mit der Lagerplatte 16 ist ein abgeschlossenes Gehäuse 20 über Schraubmittel 21 verbunden, in dem die Stelleinichtung 5 zur Bremsenbetätigung geschützt angeordnet und gelagert ist.The brake disks 10 are each arranged between the brake pads 11 and axially displaceable on the wheel hub 13 in at least one drive toothing 27, for example an involute toothing. The brake linings or the brake disks are supported during the braking process on the support plate 18 of the brake caliper 4. This can have ribs 28 and similar elevations on their inner surface, so that an optimal contact is ensured. A closed housing 20 is connected to the bearing plate 16 by screwing means 21, in which the actuating device 5 for braking actuation is arranged and stored in a protected manner.

Die Stelleinrichtung 5 umfaßt im wesentlichen einen Kugelgewindetrieb mit einer Spindel 30, insbesondere einer Kugelgewindespindel, welche über die drehbar, aber axial nicht verlagerbar in dem Gehäuse 20 angeordnete Keilzahnwelle 45 in Drehung versetzt wird. Auf die Keilzahnwelle 45 ist die Antriebswelle 7 aufgesetzt. Zu dem Kugelgewinde bzw. den Kugelbahnen 34 der Spindel 30 ist korrespondierend ein Kugelgewinde 35 in dem einteiligen Joch 36 angeordnet, das sich in seiner Endlage an einer Stirnfläche 37 des Gehäuses 20 anlegt. Die Kugelgewinde sind über zwischenliegend angeordnete Kugeln zusammenwirkend. Die vorzugsweise einstückig mit der Keilzahnwelle 45 ausgeführte Kugelgewindespindel 30 ist daher axial unverschiebbar gegenüber dem Achsschenkel angeordnet.The actuating device 5 essentially comprises a ball screw drive with a spindle 30, in particular a ball screw spindle, which is rotated by means of the spline shaft 45 arranged rotatably but not axially displaceably in the housing 20. The drive shaft 7 is placed on the spline shaft 45. Corresponding to the ball screw or the ball tracks 34 of the spindle 30, a ball screw 35 is arranged in the one-piece yoke 36, which in its end position lies against an end face 37 of the housing 20. The ball screws interact with balls arranged in between. The ball screw spindle 30, which is preferably made in one piece with the spline shaft 45, is therefore arranged axially immovably with respect to the steering knuckle.

Die Spindel 30 ist in der Lagerplatte 16 des Bremssattels 4 und im Gehäusehals 32 drehbar über jeweils ein Lager 31 und 33 abgestützt, wobei die Lagerplatte 16 ein Widerlager für den Gewindetrieb bildet. Die Druckstempel 39, 40 sind auf Gleitlagern G, die in der Lagerplatte 16 fest angeordnet sind, verschiebbar. Desweiteren sind die Stempel 39, 40 auf Gleitlagern G1 , die jeweils in der Hülse der Stempel 39, 40 angeordnet sind, verschiebbar. Die Spindel 30 ist in der Lagerplatte 16 mittels einer Anlaufscheibe A drehbar abgestützt.The spindle 30 is rotatably supported in the bearing plate 16 of the brake caliper 4 and in the housing neck 32 via a respective bearing 31 and 33, the bearing plate 16 forming an abutment for the screw drive. The pressure stamps 39, 40 are displaceable on slide bearings G, which are fixedly arranged in the bearing plate 16. Furthermore, the punches 39, 40 are displaceable on slide bearings G1, which are each arranged in the sleeve of the punches 39, 40. The spindle 30 is rotatably supported in the bearing plate 16 by means of a thrust washer A.

Zu beiden Seiten der Spindel 30 ist jeweils ein Druckstempel 39 und 40 angeordnet, die über im Gehäuse 20 gehaltene Bolzen 41 , 42 axial verschieblich geführt sind. Endseitig der Druckstempel 39, 40 an ihren dem Bremsbelag 11 zugerichteten Enden, sind Stempelköpfe 43, 44 vorgesehen, die in der Lagerplatte 16 des Bremssattels 4 geführt und gelagert sind.A pressure ram 39 and 40 is arranged on both sides of the spindle 30, which are guided axially displaceably by bolts 41, 42 held in the housing 20. At the ends of the pressure rams 39, 40 at their ends facing the brake pad 11, ram heads 43, 44 are provided which are guided and supported in the bearing plate 16 of the brake caliper 4.

Die beiden Druckstempel 39, 40 sind vorzugsweise in einer Ebene X-X mit der Spindel 30 angeordnet, wobei die Druckkräfte etwa jeweils mittig der Bremsbeläge angreifen, was in Figur 10 näher dargestellt ist. Desweiteren ist die Kugelgewindespindel 30 annähernd achsparallel versetzt zu der Rotationsachse R der Bremsscheibe 10 angeordnet. Es sind im Ausführungsbeispiel zwei Druckstempel 39, 40 gezeigt, was aufgrund der Größe des Bremsbelages erforderlich ist. Denkbar sind auch Ausführungen mit mehr als zwei Druckstempeln oder aber bei relativ kleinen Bremsbelägen kann auch nur ein Druckstempel verwendet werden, der dann beispielsweise koaxial zur Spindel 30 angeordnet sein kann.The two pressure rams 39, 40 are preferably arranged in a plane XX with the spindle 30, the pressure forces acting approximately in the center of the brake pads, which is shown in more detail in FIG. 10. Furthermore, the ball screw 30 is arranged approximately axially parallel to the axis of rotation R of the brake disc 10. In the exemplary embodiment, two pressure stamps 39, 40 are shown, which is necessary because of the size of the brake lining. Designs with more than two pressure stamps are also conceivable, or only one pressure stamp can be used for relatively small brake pads, which can then be arranged coaxially with the spindle 30, for example.

Die Druckstempel 39, 40 bestehen vorzugsweise aus einem Hülsenelement, damit eine innere Führung über die Bolzen 41 , 42 erfolgen kann. Es sind auch Vollstempel mit einer außenseitigen Führung über Hülsen möglich. Über diese Bolzen 41 , 42 erfolgt auch eine Drehmomentabstützung.The pressure stamps 39, 40 preferably consist of a sleeve element so that an internal guidance can take place via the bolts 41, 42. Full stamps with outside guidance via sleeves are also possible. Torque is also supported via these bolts 41, 42.

Bei einer Verdrehung der Keilzahnwelle 45 bzw. der Spindel 30 der Stelleinrichtung 5 dreht sich diese und betätigt über das Joch 36 die Druckstempel 39, 40 und verschiebt diese gemeinsam in Pfeilrichtung 46, so daß die Bremsbeläge die Bremsscheibe 10 gegen die ortsfeste Abstützplatte 18 des Bremssattels 4 und gegen die Bremsbeläge gepreßt werden und ein Bremsvorgang eingeleitet wird. When the spline shaft 45 or the spindle 30 of the actuating device 5 is rotated, it rotates and actuates the pressure rams 39, 40 via the yoke 36 and displaces them together in the direction of the arrow 46, so that the brake linings brake the brake disc 10 against the stationary support plate 18 of the brake caliper 4 and pressed against the brake pads and a braking process is initiated.

BezuαszeichenlisteLIST OF REFERENCE NUMERALS

1 Längslenker 34 Kugelbahn1 trailing arm 34 ball track

2 Achskörper 35 Kugelgewinde2 axle bodies 35 ball screw

2a Flansch 36 Joch2a flange 36 yoke

3 Radnabe 37 Stirnfläche3 wheel hub 37 end face

4 Bremssattel 39 Druckstempel4 brake calipers 39 pressure stamp

5 Stelleinrichtung 40 Druckstempel5 setting device 40 pressure stamp

6 Elektromotor 41 Bolzen6 electric motor 41 bolts

7 Antriebswelle 42 Bolzen7 drive shaft 42 bolts

8a Flansch 43 Stempelkopf8a flange 43 punch head

8b Platte 44 Stempelkopf8b plate 44 stamp head

8c Schelle 45 Keilzahnwelle8c clamp 45 spline shaft

10 Bremsscheibe 46 Pfeil10 brake disc 46 arrow

11 Bremsbelag11 brake pad

13 Radnabe A Anlaufscheibe13 Wheel hub A thrust washer

14 Schenkel G Gleitlager14 legs G plain bearings

15 Schenkel G1 Gleitlager15 legs G1 plain bearing

16 Lagerplatte R Rotationsachse16 bearing plate R axis of rotation

16a Mittenteil16a middle part

17 Schraubmittel17 screwdriver

18 Abstützplatte18 support plate

19 Sattelbrücke19 saddle bridge

20 Gehäuse20 housing

21 Schraubmittel21 screwdriver

22 Führungskante22 leading edge

23 Führungskante23 leading edge

25 Führungskante25 leading edge

26 Führungskante26 leading edge

27 Mitnehmerverzahnung27 drive teeth

28 Rippe28 rib

30 Spindel30 spindle

31 Lager31 bearings

32 Gehäusehals32 housing neck

33 Lager 33 bearings

Claims

P a t e n t a n s p r ü c h e Patent claims 1. Mit einer Bremseinrichtung versehene Achskonstruktion, insbesondere für luftgefederte Fahrzeuganhänger, mit einem an dem Achskörper (2) angeordneten Bremssattel (4) und darin geführten Bremsbelägen (11 ), zwischen denen mindestens eine bezüglich des Fahrzeugrades drehfeste Bremsscheibe (10) angeordnet ist, und mit einer an dem Bremssattel (4) befestigten und durch einen Elektromotor (6) antreibbaren Stelleinrichtung (5) zur Erzeugung des in Richtung auf die Bremsscheibe (10) gerichteten Zuspanndrucks der Bremse, d a d u r c h g e k e n n z e i c h n e t, daß der Elektromotor (6) getrennt von der Stelleinrichtung (5) an dem Achskörper (2) befestigt ist, und daß Elektromotor (6) und Stelleinrichtung (5) über eine Antriebswelle (7) drehfest miteinander verbunden sind, die sich quer zur Fahrtrichtung und im wesentlichen parallel zum Achskörper (2) erstreckt.1. With a braking device provided axle construction, in particular for air-sprung vehicle trailers, with a brake caliper (4) arranged on the axle body (2) and brake linings (11) guided therein, between which at least one brake disc (10) which is non-rotatable with respect to the vehicle wheel is arranged, and With an actuating device (5) attached to the brake caliper (4) and drivable by an electric motor (6) for generating the brake application pressure directed towards the brake disc (10), characterized in that the electric motor (6) is separate from the actuating device ( 5) is fastened to the axle body (2), and that the electric motor (6) and actuating device (5) are connected to one another in a rotationally fixed manner via a drive shaft (7) which extends transversely to the direction of travel and essentially parallel to the axle body (2). 2. Achskonstruktion nach Anspruch 1 , dadurch gekennzeichnet, daß die Antriebswelle (7) ausschließlich an der Stelleinrichtung (5) einerseits und im Bereich des Elektromotors (6) andererseits drehbar gelagert ist und sie sich zwischen diesen beiden Lagerorten frei erstreckt.2. Axle structure according to claim 1, characterized in that the drive shaft (7) is rotatably mounted exclusively on the actuating device (5) on the one hand and in the region of the electric motor (6) on the other hand and it extends freely between these two storage locations. 3. Achskonstruktion nach Anspruch 2, dadurch gekennzeichnet, daß sich die eine der beiden Drehlagerungen der Antriebswelle (7) innerhalb des Gehäuses des Elektromotors (6) befindet.3. Axle construction according to claim 2, characterized in that one of the two rotary bearings of the drive shaft (7) is located within the housing of the electric motor (6). 4. Achskonstruktion nach Anspruch 2, dadurch gekennzeichnet, daß die eine der beiden Drehlagerungen der Antriebswelle (7) in einem an dem Achskörper (2) befestigten Flansch (8a) erfolgt, an dem das Gehäuse des Elektromotors (6) befestigt ist.4. Axle construction according to claim 2, characterized in that one of the two rotary bearings of the drive shaft (7) in a on the axle body (2) attached flange (8a) on which the housing of the electric motor (6) is attached. 5. Achskonstruktion nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Antriebswelle (7) unter dem mit dem Achskörper (2) verbundenen Längslenker (1 ) der Achskonstruktion hindurch geführt ist. 5. Axle construction according to one of the preceding claims, characterized in that the drive shaft (7) is guided under the longitudinal link (1) connected to the axle body (2) of the axle construction. 6. Achskonstruktion nach Anspruch 5, dadurch gekennzeichnet, daß der Elektromotor (6) zwischen Längslenker (1) und Fahrzeugmittelachse angeordnet ist.6. Axle construction according to claim 5, characterized in that the electric motor (6) is arranged between the trailing arm (1) and the vehicle center axis. 7. Achskonstruktion nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Elektromotor (6) mittels einer den Achskörper (2) umgreifenden Schelle (8c) an dem Achskörper (2) befestigt ist.7. Axle construction according to one of the preceding claims, characterized in that the electric motor (6) is fastened to the axle body (2) by means of a clamp (8c) encompassing the axle body (2). 8. Achskonstruktion nach einem der vorangehenden Ansprüche, gekennzeichnet durch ein im Kraftfluß zwischen Elektromotor und Antriebswelle (7) angeordnetes, gemeinsam mit dem Elektromotor im selben Gehäuse angeordnetes Getriebe.8. Axle construction according to one of the preceding claims, characterized by a arranged in the power flow between the electric motor and drive shaft (7), arranged together with the electric motor in the same housing gear. 9. Achskonstruktion nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Stelleinrichtung (5) eine mit der Antriebswelle (7) drehfest verbundene Kugelgewindespindel (30) zur Erzeugung des Drucks der Bremsbeläge (11) auf die Bremsscheibe (10) aufweist, wobei die Kugelgewindespindel (30) gemeinsam mit einer darauf angeordneten Kugelgewindemutter einen Kugelgewindetrieb bildet und bei einer Betätigung der Stelleinrichtung (5) jeweils nur einer der beiderseits der Bremsscheibe (10) angeordneten Bremsbeläge (11 ) eine Zustellbewegung ausführt.9. Axle structure according to one of the preceding claims, characterized in that the actuating device (5) with the drive shaft (7) rotatably connected ball screw (30) for generating the pressure of the brake pads (11) on the brake disc (10), the Ball screw spindle (30) together with a ball screw nut arranged thereon forms a ball screw drive and, when the actuating device (5) is actuated, only one of the brake linings (11) arranged on both sides of the brake disc (10) executes an infeed movement. 10. Achskonstruktion nach Anspruch 9, dadurch gekennzeichnet, daß die Antriebswelle (7) und die Kugelgewindespindel (30) der Stelleinrichtung (5) axial unverschiebbar gegenüber dem Achskörper (2) und dem Bremssattel (4) angeordnet sind, und daß die Kugelgewindemutter Bestandteil eines Joches (36) zur Übertragung einer axialen Bewegung des Kugelgewindetriebs auf mindestens einen gegen einen der Bremsbeläge (11) verfahrbaren Druckstempel (39, 40) ist.10. Axle structure according to claim 9, characterized in that the drive shaft (7) and the ball screw spindle (30) of the actuating device (5) are arranged axially immovably relative to the axle body (2) and the brake caliper (4), and that the ball screw nut is part of a Yoke (36) for transmitting an axial movement of the ball screw drive to at least one pressure ram (39, 40) movable against one of the brake linings (11). 11. Achskonstruktion nach Anspruch 9, dadurch gekennzeichnet, daß das Joch (36) als Kugelgewindemutter zur Übertragung der axialen Bewegung des Kugelgewindetriebs auf zwei Druckstempel (39, 40) ausgebildet ist. 11. Axle construction according to claim 9, characterized in that the yoke (36) is designed as a ball screw nut for transmitting the axial movement of the ball screw drive to two pressure stamps (39, 40). 2. Achskonstruktion nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Bremssattel ein Schwimmsattel ist und die Antriebswelle einen axialen Ausgleich ermöglicht. 2. Axle construction according to one of the preceding claims, characterized in that the brake caliper is a floating caliper and the drive shaft enables axial compensation.
PCT/EP2001/006280 2000-06-02 2001-05-30 Air-suspended axle structure provided with a braking device Ceased WO2001092749A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP01943471A EP1287270A1 (en) 2000-06-02 2001-05-30 Air-suspended axle structure provided with a braking device
AU2001266045A AU2001266045A1 (en) 2000-06-02 2001-05-30 Air-suspended axle structure provided with a braking device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000127429 DE10027429A1 (en) 2000-06-02 2000-06-02 Air-suspended axle construction with a braking device
DE10027429.3 2000-06-02

Publications (1)

Publication Number Publication Date
WO2001092749A1 true WO2001092749A1 (en) 2001-12-06

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PCT/EP2001/006280 Ceased WO2001092749A1 (en) 2000-06-02 2001-05-30 Air-suspended axle structure provided with a braking device

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Country Link
EP (1) EP1287270A1 (en)
AU (1) AU2001266045A1 (en)
DE (1) DE10027429A1 (en)
WO (1) WO2001092749A1 (en)

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WO2004097243A1 (en) 2003-04-29 2004-11-11 Haldex Brake Products Ab Positioning of a brake caliper
WO2006007886A1 (en) * 2004-07-15 2006-01-26 Otto Sauer Achsenfabrik Keilberg Kg Brake system with a brake caliper fixing device
EP1826446A1 (en) * 2006-02-22 2007-08-29 Delphi Technologies, Inc. Brake device for vehicle wheel

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Publication number Priority date Publication date Assignee Title
WO2004097243A1 (en) 2003-04-29 2004-11-11 Haldex Brake Products Ab Positioning of a brake caliper
US7353917B2 (en) 2003-04-29 2008-04-08 Haldex Brake Products Ab Positioning of a brake caliper
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US7506731B2 (en) 2003-04-29 2009-03-24 Haldex Brake Products Ab Guidance of a disc brake
WO2006007886A1 (en) * 2004-07-15 2006-01-26 Otto Sauer Achsenfabrik Keilberg Kg Brake system with a brake caliper fixing device
WO2006007892A1 (en) * 2004-07-15 2006-01-26 Otto Sauer Achsenfabrik Gmbh(Os Achsenfabrik Gmbh ) Braking device with a brake caliper attachment
AU2005263351B2 (en) * 2004-07-15 2011-01-06 Saf-Holland Gmbh Braking device with a brake caliper attachment
US9429201B2 (en) 2004-07-15 2016-08-30 Saf-Holland Gmbh Braking device with a brake caliper attachment
EP1826446A1 (en) * 2006-02-22 2007-08-29 Delphi Technologies, Inc. Brake device for vehicle wheel

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AU2001266045A1 (en) 2001-12-11
DE10027429A1 (en) 2002-02-14
EP1287270A1 (en) 2003-03-05

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