MX2012010209A - Door driving device. - Google Patents

Abstract

A door driving device (1) for a vehicle door (2) is disclosed, particularly a railroad door. The device (1) of the door driving device comprises a rotary driving spindle (14) for engaging at least one linearly-movable output element (56) which may be rotatably actuated by an electrically driven motor (22) disposed on an end portion (17). An electromechanical locking brake (25) which temporarily prevents the driving spindle (14) from rotating is also located at the same end portion (17) of the driving spindle, where the vehicle motor (22) is disposed.

Description

DOOR DRIVING DEVICE DESCRIPTION OF THE INVENTION The invention relates to a door drive device for the door of a vehicle, in particular of a railroad, comprising a rotary drive spindle with which a linearly movable output element coupled or engages with the door engages , an electric drive motor disposed at an end portion of the drive spindle to produce a rotary movement of the drive spindle, and an electromechanical locking brake also disposed at an end portion of the drive spindle to temporarily block the rotary movement of the drive spindle. drive.

A door drive device of this type known from document O 01/69025 A1 includes a drive spindle with two opposite thread sections in which one drive motor is disposed at one end portion and at its other end portion a drive motor. an electromechanical locking brake. With each threaded section an output element engages which is connected to the door leaf of a two-leaf sliding door. By activating the drive motor it is it is possible to print a rotation to the drive spindle, so that the associated door is opened or closed by the simultaneous movement in the opposite direction of the door leaves. With the help of the locking brake it is possible to stop the rotation of the drive spindle by temporarily blocking it, in particular to prevent the door from opening inappropriately. This results in a safety aspect when using the door drive device in combination with the door of a railway, for example a subway or a tram.

Especially when restructuring older railways to more modern door drive systems, by virtue of the local conditions of the rail car to be restructured, space constraints are generally confronted. For this reason, it is not uncommon for wagons to be structurally modified considerably in order to install the new door drive device. This goes hand in hand with a high expenditure of time and also financial.

The object of the invention is to create a door drive device with which it is possible to equip and, in particular, to economically and economically restructure the vehicles and in particular the railways even under conditions of unfavorable space.

In order to solve this problem, in combination with the features mentioned at the beginning, it is proposed that the drive motor and the blocking brake be arranged in one and the same external portion of the drive spindle.

In this way, the drive and brake components of the door drive device which require a mounting space which is not inconsiderable are concentrated in one and the same end portion of the drive spindle. This reduces the necessary mounting space in the opposite end portion of the drive spindle. Frequently in the railways the conditions of space in the region of a door are configured so that on one side there are rather narrow space conditions, but nevertheless on the opposite side there is relatively much space for assembly. In all these cases it is now possible for the door drive device according to the invention to be installed comfortably in such an orientation that the drive motor and the blocking brake are in the spatially less limited region, while the opposite end portion of the drive spindle becomes where the mounting conditions are rather limited. It is very flexible with the installation and cost-intensive structural changes are saved in the rail car itself. A further advantage of the concentration of drive motor and locking brake in the same end portion of the drive spindle is that the electrical connection measures are concentrated in a narrow area and thereby the electrical wiring generally necessary is substantially simplified.

The favorable improvements of the invention arise from the subordinate claims.

Preferably the sequence of the locking brake arrangement and drive motor is selected such that the locking brake is disposed on the rear part of the drive motor axially remote from the drive spindle. In this context, the drive motor advantageously has a continuous motor shaft with one end cooperating with the drive spindle and the other end with the locking brake.

A structure which contemplates that the drive motor and the blocking brake are combined in a design unit designated as the drive and brake unit is considered particularly favorable. This drive and brake unit is characterized by a very structured Compact and can be installed in a particularly simple way.

Preferably the drive and brake unit also has a reduction gear acting between the drive motor and the drive spindle and which in particular serves to reduce the number of revolutions of the drive spindle with respect to the number of revolutions of the drive motor and simultaneously increasing the torque for the transposition of the output element coupled with a door. The use of the reduction gear also allows the use of economical electric drive motors which are normally of high speed.

Preferably, the drive motor is axial between, on the one hand, the locking brake and, on the other hand, the reduction gear. Conveniently all three components are combined in a self-supporting structural unit in the form of the drive and brake unit.

The door drive device conveniently includes a supporting structure to which the drive and brake unit can be fixed or detachably, preferably detachably, by means of at least one attachment interface. Each attachment interface is conveniently a component of a base Fixation applied to the drive and brake unit, which can be carried out, for example, in the form of an angled sheet metal part. The fixing base is preferably arranged between the drive motor and the locking brake and projects laterally from the drive and brake unit with a section comprising at least one fixing interface.

The door drive device is suitably configured in its entirety as a self-supporting construction unit that can be fixed without problems as a whole to the vehicle to be equipped with it. For fastening, this self-supporting structural unit preferably includes a suitable supporting structure which is provided with a sufficient number of fixing interfaces and to which the driving spindle, the drive motor, the locking brake and optionally also the reduction gear are applied. . If the drive motor and the blocking brake are combined to form a drive unit and brakes, this drive and brake unit is expediently applied with its minimum one fixing interface to the supporting structure of the door operating device. The supporting structure is preferably configured as a carrier plate on which one of the surfaces of the plate is fixed the aforementioned components.

The supporting structure of the door drive device is expediently equipped with at least one door guide rail extending parallel to the drive spindle, on which at least one longitudinally slidable guide shoe which can be coupled or coupled is supported. with the component that must be operated from the associated vehicle door. At least one of these guide runners engages for movement with an output element which is engaged with the driving spindle and with a rotary movement of the driving spindle carries out a linear movement. In this way the associated guide shoe also moves with the linear movement of the output element.

The electromechanical locking brake allows an electric or electronic control operation depending on the position of the door that must be operated. The brake function is controlled in particular with the use of a suitable position detecting device, the position detecting device preferably claiming the position of at least one output element engaged with the drive spindle. The electromechanical locking brake can be controlled in particular electrically so that it assumes a blocking position which prevents the rotary movement of the drive spindle whenever the door is open or closed.

The activation or deactivation of the electromechanical locking brake is conveniently carried out in synchronization with activation and deactivation of the electric drive motor.

For in particular in the case of an emergency being able to manually open the associated door and in particular to open it by pushing, the locking brake is conveniently equipped with a manually operated mechanical emergency unlocking device. With this it is also possible to activate the locking brake at any time without electric power so that the drive spindle is released to carry out a rotary movement. With this it is possible that the minimum of an output element coupled with a component of a door moves along the drive spindle with simultaneous rotary movement of the drive spindle. Therefore, in the case of emergency people inside a railway car are able to open the door without the help of a stranger.

The locking brake is conveniently equipped with a movable brake element that can be placed either in a blocking position blocking the rotary movement of the drive spindle or in a release position allowing rotational movement of the drive spindle. Preferably the brake element is in the pre-tensioned locking position by spring means, so that the door drive is also blocked without electrical power. In order to release the drive spindle, the emergency unlocking device is equipped with at least one manual operating means whose manual operation, with exceeding of the elastic force of the spring means, causes a displacement of the brake element from the position of lock to the release position. At least one manual operating means is preferably configured and arranged so that it is readily accessible inside the rail car at all times. Preferably, at least one additional manual operating means is configured and arranged so that it is easily accessible from the outside of a railway car to allow an emergency opening of the door from the outside by rescue personnel.

Preferably at least one manual operating means is equipped with a hoist which by virtue of its flexibility can be optimally run on the vehicle. Preferably there are two manual operating means that act for the same brake element and have a redundant function, so that with the use of only each manual operation means it is possible to carry out the emergency unlocking.

A particularly compact form of construction of the locking brake results if the emergency unlocking device comprises a two-arm reversing lever which is mounted for tilting movement, which is coupled on the one hand with a manual operating means and on the other hand with the brake element. With an inversion lever of this type it is possible to optimally adjust the force ratios in order to activate the emergency release.

A coupling bolt which is mounted for linear displacement is conveniently incorporated between the reversing lever and the brake element. It allows a linear drive of the brake element despite the actuation of the tilting reversing lever.

The working stroke of the brake element is usually too short to guarantee optimal response behavior. However, with an emergency drive this short working stroke has the consequence of an indifferent operating sensation. For this reason it is advisable that measures are taken that increase the driving distance of the manual operating means without influencing the actual working stroke of the brake element. This effect is obtained in particular by means of the fact that between the connection between the manual operating means and the brake element a spring device is inserted which allows a limited relative movement between the manual operating means and the brake element. Accordingly, with the activation of the manual operating means the spring device is first energized without causing a drive of the brake element. The brake element is only dragged when the spring device has been tensioned to a certain extent by activating the manual operating means. This "certain measurement" can be obtained depending on the design of the spring device when the spring device is tightened as much as possible or already before, ie with the spring device only partially tensioned. The spring device is in particular a pressure spring device which is compressed during tensioning, for example in the form of a helical spring.

The drive spindle is conveniently configured to comprise two successive axially disposed driving thread sections, one of which is a right thread and the other a left thread. With each driving thread section, at least one output element is engaged with thread pitch, so that depending on the direction of rotation of the driving spindle, the output elements carry out a linear movement that brings them closer to each other or separates them from each other. The output elements cooperating with the different driving thread sections are conveniently coupled with different door leaves of a vehicle door which is driven by deflection.

BRIEF DESCRIPTION OF THE FIGURES In the following the invention is explained in more detail by means of the attached figures. In these show: Figure 1 a preferred embodiment of the door drive device according to the invention in a perspective representation, Figure 2 the door drive device of figure 1 in a front side elevation view, Figure 3 the end portion III framed with line to points and dashes in figure 1 of the drive device in the door, in an amplified representation, Figure 4 the end portion of the door drive device equipped with the drive motor and the locking brake in a section longitudinal according to the section line IV-IV, 5 shows an enlarged detail of the illustration in FIG. 4 in the area of the blocking brake, and 6 shows the end portion of the door drive device equipped with the locking brake in a longitudinal section in a section plane rotated by 90 ° with respect to FIGS. 4 and 5.

In the figure can be seen a door drive device that is designated in its entirety with the reference symbol 1, which is configured to be mounted on a vehicle, in particular a railway, and with whose help it is possible to operate to open and closing the door 2 indicated to points and dashes in figure 2 of the respective vehicle.

The door drive device 1 is particularly suitable for driving a two-leaf door which is equipped with two moving leaves 2 a, 2 b which move and in particular move in the opposite direction relative to one another. In the closed state of the door 2 both door leaves 2a, 2b are approximated to one another and in the open state of the door are separated.

The door drive device 1 is conveniently configured as a constructive unit self-supporting that can be mounted as a unit in the vehicle that should be equipped with it. In this way it is possible to assemble the door drive device 1 very quickly and, during assembly, the relative adjustment between the individual components of the door drive device 1 and the vehicle can be dispensed with.

To fix it to the associated vehicle, which is in particular a railroad and in this particular aspect of a meter, the door drive device 1 is equipped with a supporting structure 3 which is preferably configured as supporting plate 3a, the which preferably is constituted of metal, and in particular of steel. In this supporting structure 3 there are several fastening interface points 4 with whose cooperation it is possible to fix the supporting structure 3 and consequently the entire door drive device 1 to a vehicle mounting interface point adapted thereto.

The supporting structure 3 which is preferably shaped as a plate has a front face 5 and a rear face 6 opposite with respect to that. The assembly in the vehicle is carried out with the rear part 6 in front. All additional relevant components of the door drive device 1 are preferably applied to the front face 5 of the structure 3 carrier The door drive device 1 has altogether a longitudinal shape with longitudinal axis 7. In the state of use mounted on the vehicle, the longitudinal axis 7 is aligned horizontally.

The door drive device 1 is mounted in particular on top of a wall opening of the carriage of a vehicle, which can be left free or closed by means of the door 2.

In the carrier structure 3, in particular in the lower area of the front face 5, a door guide rail 8 is expediently mounted which extends in the axial direction of the longitudinal axis 7. In the door guide rail 8, two pairs of runners 12, 12a are mounted to move in a linear manner independently of one another; 13, 13a of conduction which in each case are equipped with fixing means to which one of the two door leaves 2a, 2b to be moved can be fixed.

The respectively a driving skate 12, 13 of each pair of driving skids serves as a driving skate. In it, a driving force is introduced to drive the door, which consequently has its linear movement along the door guide rail 8. The respectively other driving skate serves as a skate 12a, 13a auxiliary that by virtue of the coupling to the door leaf 2a, 2b is dragged and stabilizes the suspension of the respective door leaf 2a, 2b.

The work force generated by the displacement movement is obtained by the driving shoes 12, 13 of a drive spindle 14 which is mounted rotatably on the supporting structure 3, and which extends in the axial direction of the longitudinal axis 7. The drive spindle 14 is aligned parallel to the door guide rail 8.

The drive spindle 14 has two driving thread sections 14a, 14b which are axially arranged in succession. These are configured for opposite movement, that is to say that in one case they have a left thread and in the other case a right thread. The thread pitch is preferably relatively large.

With each drive section 14a, 14b, one of two output elements 15a, 15b is engaged in the manner of a screw connection. The output elements 15a, 15b move in the axial direction of the longitudinal axis 7, but are simultaneously simultaneously secured against rotation. Therefore each output element 15a, 15b performs a linear output movement 16a, 16b indicated by a double arrow in the longitudinal direction of the drive spindle 14 when rotating the drive spindle 14 about its longitudinal axis. Depending on the direction of rotation of the drive spindle 14, the two output elements 15a, 15b move away from one another or approach each other.

Both elements 15a, 15b are each mechanically connected to one of the two driving shoes 12, 13 so that the respective driving shoe 12, 13 accompanies the linear output movement 16a, 16b of the output element 15a, 15b which has a trailer In this way, the linear movement of the runners 12, 12a results from the output movement 16a, 16b of the output elements 15a, 15b; 13, 13a of conduction required to open and close the door 2. Through its coupling with the driving shoes 12, 13 the output elements 15a, 15b obtain their anti-rotational safety required to produce the output movement 16a, 16b.

In an exemplary embodiment not shown, the door drive device 1 is configured to drive only a single door component, and in this case it includes only a single drive thread section having the same total thread direction. With a door drive device 1 of this type it is possible, for example, to move a single door leaf of a door.

The drive spindle 14 has two first and second mutually opposite end portions 17, 18. To each of these end portions 17, 18 a support stand 21 is conveniently associated which is fixed on the front face 5 of the supporting structure 3 and in which the drive spindle 14 is rotatably mounted. If necessary, it is possible to provide an additional support stand in the longitudinal central area of the drive spindle 14 in order to keep the bending stress of the drive spindle 14 as low as possible.

The door drive device 1 includes an electric drive motor 22 for the rotary drive of the drive spindle 14. This drive motor 22 is disposed in the first end portion 17 of the drive spindle 14. The drive motor 22 has a motor box 23 on the outside of which an electromechanical interface 24 is arranged, by way of which the drive motor 22 is supplied with the necessary drive power and the electrical command signals required for its operation. operation. The drive motor 22 can be operated by choice for left rotation or right rotation to drive the drive spindle 14 with either left rotation or right rotation.

In the case of the electric drive motor, it is in particular an electric current motor keep going .

In the same first first portion 17 of the drive spindle 14 in which the electric drive motor 22 is disposed is also an electromechanical locking brake 25 with which it is possible to temporarily block the rotary movement of the drive spindle 14 as necessary . The blocking is expediently carried out at least in the closed position of the door 2, but preferably also in its open position.

The locking brake 25 has a brake housing 26 on the outside of which an electromechanical interface 27 is arranged, by means of which it is possible to electrically control the locking brake 25 to predetermine its operating state.

Preferably the door drive device 1 is equipped with a position detecting device for detecting the relevant operating positions of at least one output element 15a, 15b and / or at least one skate 12, 12a; 13, 13a of driving, being that by means of the position signal determined in each case the electrical activation of the blocking brake 25 is controlled.

Due to the fact that the electric drive motor 22 and the electromechanical locking brake 25 they find in one and the same extreme portion 17 of the driving spindle 14 a compact concentration of these components takes place in a minimum of space. This facilitates assembly at the operation site of the vehicle that must be equipped with it. It is also possible to arrange the interfaces 24, 27 necessary electromechanical, which simplifies the measurements for the electrical connection. In addition, it is thus possible for the second opposite end portion 18 of the drive spindle 14 to end up free without it being necessary to equip it with a bulky electromechanical component. This favors the assembly of the door drive device 1 in those cases in which the mounting space at an end portion of the door drive device 1 is very limited in the vehicle.

Conveniently, the drive motor 22 and the locking brake 25 are combined in a construction unit designated as drive and brake unit 32. This drive and brake unit 32 which is handled in a unitary manner is mounted on the supporting structure 3, for example by means of a fixing base 33. In the exemplary embodiment, this fixing base 33 is the only fixing means with which the drive and brake unit 32 is fixed directly to the supporting structure 3.

The fixing base 33 includes one or several fixing interfaces 34 which in each case are suitable for carrying out a fixing to the supporting structure 3 by means of at least one fixing screw 35.

Preferably the locking brake 25 is disposed in the rear part of the drive motor 22 axially remote from the drive spindle. In the exemplary embodiment, the locking brake 25 is flanged with its brake housing 26 to one rear face 28 of the motor housing 23 axially remote from the drive spindle 14. In the exemplary embodiment, the fixing base 33 is inserted, with space saving, axial between the brake housing 26 and the motor housing 23.

In the exemplary embodiment, the locking brake 25 does not cooperate directly with the drive spindle 14, but with the drive shaft 36 of the drive motor 22 driven in rotation, which in turn is connected to the drive spindle 14 to drive it. rotationally The drive shaft 36 exemplarily has a rear end section 37 which protrudes out of the engine case 23 on the rear front face 28 and enters the brake case 26 there to cooperate with the locking brake 25. On the opposite front front surface 42 of the motor housing 23 the drive shaft 33 protrudes with an anterior end section 38 which is in rotary drive connection with the drive spindle 14 which in FIG. 4 is only sketched to points and dashes.

The drive and brake unit 32 conveniently includes as an additional component a reduction gear 43 which is mounted on the front front face 42 of the motor housing 23. The reduction gear 43 contains an internal gear unit 44, in particular a planetary gear which in the input part is coupled to the drive shaft 36 and has a transmission output shaft 45 that exits at its front. Exemplary driving shaft 36 engages gear reducer 43 with its front end portion 38 that in the front protrudes from the engine case 23.

The gear unit 44 in particular is designed so that the number of revolutions of the output shaft 45 is smaller than that of the drive shaft 36.

Finally, via a shaft coupling 46, which is configured for example as a nail clutch, the output shaft 45 is rotatably connected to the first end portion 17 of the drive spindle 14.

It is also possible to dispense with the reduction gear 43. Then the drive shaft 36 is connected directly to the drive spindle 14 via the shaft coupling 46.

The locking brake 25 includes a brake disk 47 whose two disk faces opposite one another form a first brake surface 48a and a second brake surface 48b. Each brake surface 48a, 48b is conveniently made of a material with a high coefficient of friction. For example, each brake surface 48a, 48b may be constituted by a brake lining or the entire brake disk 47 is made of the material of a brake lining.

The brake disc 47 seats with a central recess 52 in an immobilized form of rotation and at the same time axially movable on a hub body 53, which sits immobilized by rotation in the rear end section 37 of the drive shaft 36 that penetrates the box 26 brake. Alternatively to this, the brake disk 47 could also be arranged pivotally immobilized directly on the rear end section 37 of the drive shaft 36.

The brake disk 47 is axial between two opposite first and second brake surfaces 54a, 54b facing each other. The first opposing brake surface 54a is located in a first support body 55 which is traversed by the drive shaft 36, which in the exemplary embodiment is a component of the brake housing 26 and is stationary in the housing 23 of the brake housing. motor. The The first counter brake surface 54a is oriented axially away from the drive spindle 14.

The second counter brake surface 54b is constituted by a front surface of a brake element 56 which preferably also has a disc shape and is centrally recessed, which concentrically surrounds the hub body 53. The brake element 56 is mounted pivotally immobilized with respect to the brake housing 26, but can nonetheless carry out a linear working movement 57 indicated by double arrows with respect to the driving shaft 36 in the longitudinal direction of the driving shaft 36. z.

In the interior of the brake housing 26 is a second additional support body 58 which is stationary with respect to the housing. 26 and flanking the brake element 56 which preferably has the shape of a disc on the side axially opposite the brake disk 47. The second support body 58 is conveniently fixed by fixing screws 62 to the first support body 55 comprising the first opposite brake surface 54a.

Between the second support body 58 and the axially movable brake element 56 for effecting the working movement 57 if they have spring means 63, of which preference is given to pressure spring means and which keep the brake element 56 constantly under pre-tension in the direction of the brake disk 47.

In a blocking position of the brake element 56, the brake element 56 is pressed by the spring means 63 against the brake disk 47 so that it is firmly secured with its two brake surfaces 48a, 48b between the two counter braking surfaces 54a, 54b, and can no longer rotate. By this also a rotary movement of the drive shaft 36 is prevented. Simultaneously, the drive spindle 14 which is actively connected to the drive shaft 36 is prevented from rotating.

With the aid of an electromagnetic device 64 of the locking brake 25 it is possible, if necessary, to move the brake element 56 out of the locking position to a released position by overcoming the elastic force of the spring means 63, and to carry out the the movement 57 of work. In this released position, the axial distance between the two opposite brake surfaces 54a, 54b is sufently large to allow an unlimited turning movement to the brake disk 47 engaged in an immobilized manner of rotation with the drive shaft 36. As a result, the drive shaft 36 and the drive spindle 14 coupled with it can also rotate.

The electromagnetic device 64 includes and a coil unit 65 disposed in the second support body 58 which, via electrical conductors 66, is connected to the electromechanical interface 27 and which can therefore be supplied with electric current if necessary.

The brake element 56 is placed in front of the coil unit 65 and forms a mobile armature of the electromagnetic device 64. Accordingly, upon applying current to the coil unit 65, the brake element 56 is attracted and lifted from the brake disk 47 with exceeding of the spring means 63.

In the normal operation of the door drive device 1, the electromagnetic device 64 is activated and deactivated cyclically according to the position of the door leaves 2a, 2b, to put the brake element 56 or in the position of blocking or release position by the effect of the electromagnetic device 64.

In case of emergency, it is also possible to open the door 2 also in the case of a power failure without operation of the electromagnetic device 64, conveniently equipped with a mechanical emergency unlocking device 67, manually operated.

The emergency unlocking device 67 has at least one manual operation means 68a, 68b by means of which manual operation it is possible to move the brake element 56 from the locking position to the release position by overcoming the elastic force of the spring elements 63.

In the exemplary embodiment, the manual operation means 68a, 68b are present in double form to ensure redundancy. Each manually operated means 68a, 68b allows, independently of the respectively other manual operation means 68a, 68b, the manual operation of the emergency unlocking device 67. Accordingly, it is possible to guide the manual operating means 68a, 68b to different areas within or of the vehicle, so that it is possible to carry out emergency unlocking in different places, for example on the one hand inside the vehicle and on the other hand to the outside of the vehicle.

Each manually operated means 68a, 68b is preferably configured as cable traction 72, which on the one hand actively connects to the brake element 56 and on the other hand conveniently attacks on a manipulator 73. In the case of the manipulator 73 it is for example a rotary knob (a knob) or a rocker lever. The manipulator 73 can be manually operated according to the arrow 74 to generate a pulling movement of the cable traction 72.

The end section opposite the manipulator 73 of each manually operated means 68a, 68b, hereinafter referred to as coupling section 75, attacks a first lever arm designated as an arm 77 for driving a two-arm reversing lever 76 that it is supported for tilting movement in a support body 78. In the case of the support body 78, it is preferably a component of the brake housing 26 on which the support body 78 is supported with an oscillating bearing section 79. Specifically, the support body 78 is constituted by the closing wall 83 of the brake housing 26 axially opposite the drive motor 22. In this closing wall 83 there is a centering groove 84 on the outside, in which the oscillating bearing section 79 formed as a shoulder intervenes.

On the side of the oscillating bearing section 79 opposite the driving arm 77, the reversing lever 76 includes a second lever arm designated as the working arm 85. This working arm 85 is actively connected to the brake element 56.

Conveniently, the closing wall 83 associated with the reversing lever 76 passes through a coupling bolt 86 slidable in the axial direction of the longitudinal axis 7. In the section of the coupling bolt 86 which is located outside the brake case 26, the Working arm 85 is hooked with positive connection, but nevertheless with some clearance of movement, for which purpose the working arm 85 has an end section 85a in the form of a fork.

The internal end section of the coupling bolt 86 located in the braking box 26 intervenes in an axial movement coupling latch 87 according to the double arrow 87a, which is engaged with several braces 88 in a manner that allows the transmission of traction forces. These braces 88, which for example are formed by screws, pass through the second bearing body 58 and the brake element 56 which flanks the second bearing body 58 in a linearly slidable manner. Each bracket 88 has at its end portion opposite the coupling latch 87 a bearing head 89 which is placed in front of the brake element 56 on the side remote from the second support body 78.

When the emergency unlocking device 67 is not in operation, the braces 88 assume the basic position shown in Figure 6, in which the bearing heads 89 are remote from the brake element 56, so that the element The brake 56 can be moved unrestrictedly by the electromagnetic device 64.

To carry out an emergency release, by pulling on a manually operated means 68a, 68b, a tilting movement 92 of the reversing lever 76 indicated by the arrows is produced, so that from a non-tilted position it moves to a tilted position indicated by dots and dashes in 93 of Figure 4.

In the tilting movement, the reversing lever 76 draws with its working arm 85 the coupling bolt 86 and removes it from the brake housing 26 for a distance. Thus, the coupling latch 87 engaged in the coupling pin 86 is driven according to the arrow 87b, so that also the struts 88 resting on the coupling latch 87 are removed from the second support body 58 for a distance . When this happens, the bearing heads 89 come into contact with the brake element 56 and drag the brake element 56 overcoming the spring force of the spring means 63. With this, the brake element 56 moves away from the brake disk 47 by manual activation and the blocking function of the blocking brake 25 is eliminated.

Conveniently each manual operation means 68a, 68b and / or the associated manipulator 73 can be locked in the activated position in order to permanently preserve the emergency release.

The stroke of the brake element 56 between the locked position and the release position is very small. For this reason it is convenient that the emergency unlocking device 67 comprises means that have the effect of prolonging the path to operate the manual operating means 68a, 68b, so that a prolonged working stroke of the brake element 56 is almost simulated. .

The exemplary blocking brake 25 is equipped with these means which here manually by means 68a, 68b include a spring device 94 which is interposed between the reversing lever 76 and the respective manual operation means 68a, 68b. Here there is a serial connection.

In the exemplary embodiment, the spring device 94 has a first end section 96 that abuts the back of the actuator arm 77, and has a second end section 97 spaced apart from the rear portion 95. The manual operating means 68a, 68b passes through its coupling section 75 the actuating arm 77 and then also coaxially the spring device 94, with the coupling section 75 being fixed to the second end section 97 of the device 94 of spring.

If a tractive drive force is inserted in the manual operation means 68a, 68b, first a compression of the spring device 94 occurs without tilting of the reversing lever 76 until all the windings of the spring are in contact with each other. Then the spring device 94 is compressed "blockwise". This compressed state of the spring device 94 is indicated in dotted form at 98 of FIG. 5. Only when this compressed state 98 is reached the spring device 94 acts axially as a rigid body and introduces the pulling force introduced in the second section. 97 directly on the drive arm 77, so that the reversing lever 76 then carries out the tilting movement 92.

To ensure this function, the elastic force of the spring device 94 is less than the elastic force of the spring means 63.

In an alternative design, the spring device 94 has a greater spring force, so that the reversing lever 76 is already activated before the spring device 94 is fully compressed.

Preferably each spring device 94 is surrounded by a bearing tube 99, which prevents unintentional lateral flexing of the spring device 94 during the compression process. The support tube 99 also prevents fouling of the spring device 94.

Claims (18)

1. Door drive device for the door of a vehicle, in particular of a railway, comprising a rotary drive spindle with which a linearly movable output element engages or can be coupled with the door, an electric drive motor arranged on an end portion of the drive spindle to produce a rotary movement of the drive spindle, and an electromechanical locking brake also disposed at an end portion of the drive spindle for temporarily blocking the rotary movement of the drive spindle, characterized in that the motor The drive and the locking brake are arranged in one and the same end portion of the driving spindle.

2. Door drive device as claimed in claim 1, characterized in that the locking brake is disposed at the rear of the drive motor axially remote from the drive spindle.

3. Door drive device as claimed in any of claims 1 or 2, characterized in that the drive motor and the blocking brake are combined in a constructive unit with the form of a drive and brake unit.

4. Door drive device as claimed in claim 3, characterized in that the drive and brake unit also comprises a reduction gear that is sandwiched between the drive motor and the drive spindle.

5. Door drive device as claimed in claim 4, characterized in that the drive motor is arranged axially between the locking brake and the reduction gear.

6. Door drive device as claimed in any of claims 3 to 5, characterized in that the drive and brake unit is equipped with at least one fixing interface for attachment to a supporting structure.

7. Door drive device as claimed in claim 6, characterized in that the fixing interface is realized as a component of a fixing socket which is conveniently incorporated between the drive motor and the locking brake.

8. Door actuating device as claimed in any of claims 1 to 7, characterized in that in total it is configured as a self-supporting constructive unit, being that it has a supporting structure that supports at least the spindle of drive, the drive motor and the blocking brake, which is equipped with fastening interfaces which serve for the unitary fixing of the door drive device to the vehicle to be equipped with it, the carrying structure being conveniently configured as bearing plate.

9. Door drive device as claimed in claim 8, characterized in that at least one door guide rail extending parallel to the drive spindle in which a guide shoe connected to a motor is slidingly mounted is disposed in the carrier structure. exit element and that can be coupled with a door that must be operated.

10. Door actuating device as claimed in any of claims 1 to 9, characterized in that the locking brake is equipped with a manually operated mechanical emergency unlocking device.

11. Door drive device as claimed in claim 10, characterized in that the electromechanical locking brake includes a brake element that can be placed electromechanically either in a locked position or in a release position to block or release the rotary movement of the drive spindle, which is set low Pre-tension in the blocking position by spring means, the emergency unlocking device having at least one manual operation means by means of which manual operation the brake element can be manually changed from the blocking position to the position of release by overcoming the elastic force of the spring means.

12. Door operating device as claimed in claim 11, characterized in that at least one manual operating means includes a cable pull and / or that at least manual operating means cooperate with the brake element with redundant function.

13. Door drive device as claimed in any of claims 11 or 12, characterized in that the emergency unlocking device comprises a arm reversing lever that is supported for tilting movement in a support body constituted in particular by a box of brakes of the blocking brake, and which comprises a driving arm coupled with the manual operating means as well as a working arm coupled with the brake element.

14. Door drive device as claimed in claim 13, characterized in that the working arm of the tilting reversing lever attacks a coupling bolt coupled with the element brake that is mounted linearly slidable relative to the support body.

15. Door drive device as claimed in any of claims 11 to 14, characterized in that in the connection between at least one manual operating means and the brake element is interposed a spring device that allows limited relative movement between the means of manual operation and the brake element to extend the drive path of the manual operating means.

16. Door drive device as claimed in claim 15, characterized in that the spring device is a pressure spring device which, by means of the operation of the manual operating means, is first compressed without dragging the brake element and which, after being carried out the compression has the effect of dragging the brake element while continuing the movement of the manual operating means.

17. Door drive device as claimed in claim 16, characterized in that the spring device can be fully compressed to the mutual contact of all the spring components movable relatively to each other before the movement of the manual operation means continues effect a drag of the brake element.

18. Door drive device as claimed in any of claims 1 to 17, characterized in that the drive spindle comprises opposite pitch driving thread sections which are arranged axially successively, with which in each case at least one element engages of exit that can be connected with respectively one of door leaves of a door that must be operated to slide in opposite direction.