Bollard drive for a blocking bollard, and blocking bollard

Abstract

The invention relates to a bollard drive (101) for a blocking bollard (501) for moving a blocking body (507) between a blocking position (581) and an open position (583) along a movement direction (191) relative to a main part (503) which is connected to an underlying surface, comprising a base element (103) which is connected to the main part (503), a drive unit which is arranged on the base element (103) and comprises an electric motor (105), and a gearing mechanism (105, 121, 201) for electromechanically driving the blocking body (507) along a movement direction (191) relative to the main part (503) by means of a drive element (201) which is driven by the gearing mechanism (105, 121, 201) and is connected to the blocking body (507). The invention is characterized in that the gearing mechanism (105, 121) is paired with a coupling device (121, 201, 301) with a first coupling part (121) and a second coupling part (201, 401), wherein the coupling device (121, 201, 301, 401, 402) produces a driving connection in the gearing mechanism (105, 121, 201) when the first coupling part (121) engages with the second coupling part (201, 401), and by operating an operating device (303, 901), the first coupling part (121) and the second coupling part (201, 401) can be brought out of engagement such that the driving connection is interrupted and the movement of the blocking body (507) relative to the main part (503) is released. The invention additionally relates to a blocking bollard comprising such a bollard drive.

Description

Bollard drive for a barrier bollard and barrier bollard

[0001] The invention relates to a bollard drive for a locking bollard for moving a barrier element between a locking position and an opening position along a direction of movement relative to a base body connected to a substrate, with a base element connected to the base body, a drive unit arranged on the base element with an electric motor and a gearbox for electromechanically driving the barrier element along the direction of movement relative to the base body by means of a drive element driven by the gearbox and connected to the barrier element.

[0002] Bollard drives, or barrier bollards in general, are known in a wide variety of designs. These barrier bollards serve, for example, to block off an area that is only temporarily accessible or only accessible to authorized persons and / or vehicles. Hydraulically operated bollard drives are common, in which an electric motor controls a hydraulic pump, and the actual bollard drive, for raising and / or lowering, is achieved by means of a hydraulic cylinder. Emergency release is particularly simple with such hydraulic bollard drives, as only a valve in a supply line to the hydraulic cylinder needs to be switched to apply the necessary pressure. to drain hydraulic fluid and thus make the bollard lowerable.

[0003] Furthermore, electric bollard drives are known. These electric bollard drives are either equipped with a self-locking mechanism, for example, for security reasons to prevent misuse. With these drives, a corresponding emergency release by simply disconnecting the electric motor is technically impossible. Additionally, electric bollard drives, including battery-powered ones, are known without a self-locking mechanism in the electric drive; these can be moved, for example, after overcoming some resistance in the event of a power failure. Therefore, electric bollard drives, which are technically much simpler to construct than hydraulic bollard drives, currently cannot offer the same level of security as, for example, a hydraulic bollard drive, especially if they need to be moved in the event of a technical malfunction or an emergency.

[0004] WO 80 / 02576 of fenbart specifies a releasable bollard. The bollard is driven by a chain, which is in turn driven by a gearbox. A disengageable clutch is used to decouple the chain drive from the bollard. The actual decoupling process can be initiated using a tool.

[0005] US 2020 / 0131837 Al concerns a release mechanism for a sliding door. This can involve a a rack and pinion drive gear of the The drive mechanism can be decoupled from the drive by means of a switchable clutch.

[0006] FR 2 853 683 Al describes a drive unit with a motor, which is used to implement a sliding gate drive. A gear engages with a rack to drive the sliding gate, whereby the drive gear can be pivoted out of engagement with the rack to unlock the sliding gate.

[0007] US 6,343,436 Bb discloses a drive unit for a window. A sliding element of a vertical sliding window is movable by a motorized drive unit. The drive unit has a rack and pinion drive with a rack and a gear, wherein the rack can be disengaged from the gear by partially disassembling the drive unit in order to release the sliding element.

[0008] The purpose of the invention is to improve the state of the art.

[0009] The problem is solved by a bollard drive for a barrier bollard for moving a barrier element between a locked position and an open position along a direction of movement relative to a base body connected to a ground, with a base element connected to the base body, a drive unit arranged on the base element with an electric motor and a gearbox for electromechanically driving the barrier element along the direction of movement relative to the Base body by means of a drive element driven by the gearbox and connected to the shut-off body, wherein a coupling device with a first coupling part and a second coupling part is assigned to the gearbox, wherein the coupling device establishes a drive connection in the gearbox when the first coupling part engages with the second coupling part, and the first coupling part and the second coupling part can be disengaged by operating an operating device, so that the drive connection is interrupted and the movement of the shut-off body relative to the base body is released.

[0010] By means of the coupling device, a simple, quick and, above all, reliable interruption of the drive connection is possible by operating the control device, so that a corresponding part of the bollard drive, namely the drive element, is free or at least less restricted in its movement and thus the barrier body can be moved from the locked position to the open position without having to overcome the electric motor and / or the gearbox and / or, in particular, a self-locking mechanism of parts of the electric motor and / or the gearbox.

[0011] The following terms are explained in this context:

[0012] A "bollard drive" describes a technical device that generates a mechanical movement from, for example, electrical drive energy and serves to drive a bollard or barrier bollard. Such a bollard drive can use different drive methods; for the invention described here, this refers in particular to bollard drives which convert electrical energy directly into the movement of corresponding parts of a bollard by means of an electric motor and in particular have a rack and pinion drive and / or a friction drive principle.

[0013] "Bollards" within the meaning of the present invention are posts, pillars, or similarly designed elements made of various materials, used particularly in road traffic and / or in stationary traffic. Such bollards are permanently installed to prevent, for example, driving or parking in areas such as sidewalks, cycle paths, or emergency access points. To allow temporary passage, for example, for emergency vehicles, authorized residents, or other authorized persons and / or vehicles, bollards are designed in various ways to allow them to be moved or adjusted between a blocked and an open position.

[0014] In the case of the invention described herein, access is blocked and / or prevented by means of a "barrier element," i.e., that part of a bollard which, for example, can be installed at ground level or driven into the ground. The barrier element is, in particular, a rod-shaped or bollard-shaped device which The barrier element is arranged in a movable manner relative to a base body connected to the ground. Likewise, the "barrier element" can also be part of the bollard drive, which, for example, moves another part of the bollard via a lever mechanism, if, for instance, a linear movement of the barrier element is converted into a folding movement for the actual bollard. "Moving" this barrier element describes, in particular, a translational movement along a "direction of movement," i.e., along, for example, an axis of movement defined by the bollard drive. This "direction of movement" can also be part of a lever mechanism or a lever system, whereby the "direction of movement" describes the essential direction of action of the actual bollard drive.

[0015] A “substrate” is, for example, the ground, paving, a foundation or other suitable fixing in which the so-called “base body”, i.e. a fixed component of the bollard, is appropriately connected or anchored.

[0016] A "basic element" describes the part of the bollard drive to which, for example, drive components and / or electrical components are attached. A "drive unit," which includes an electric motor and a gearbox, is attached to or arranged on the basic element. This drive unit enables the direct electromechanical actuation of the barrier element along its direction of movement. An "electric motor" is an electromechanical converter, i.e., An electric machine is an electrical machine to which electrical power is supplied and which can then deliver mechanical power. For example, conventional electric motors use current-carrying conductor coils to generate magnetic fields and thus convert a rotary or linear motion into a linear motion. Such electric motors are known to be mechanically or electronically commutated, both of which can be suitable for the invention. Likewise, an asynchronous motor or any other electrically driven motor can be used. Similarly, a corresponding electric motor can be designed in such a way that the ingress of moisture is effectively prevented or the electric motor is protected against the ingress of moisture.A "gearbox" is a mechanical transmission or reduction unit by means of which a movement generated by the electric motor is converted into a movement of the components of the bollard drive along the direction of motion. In particular, this is a gear drive or a worm gear drive, which can also be designed to be self-locking.

[0017] In this context, "electromechanical drive" refers to a direct drive of the corresponding components of the bollard drive by means of the electric motor via further mechanical components, in contrast to otherwise known hydraulically translated drives.

[0018] A "drive element" of the bollard drive refers to a movable element, whereas the basic element with the drive unit is, for example, different from the... The base body of the bollard is fixed in place. Such a drive element is, for example, a drive rod, a connecting element, or another mechanical component that is mechanically connected to the barrier body and drives it, with the drive element itself being driven by means of the gearbox.

[0019] A "clutch assembly" comprises a "first clutch part" and at least one "second clutch part," thus consisting of two mechanically interacting components. Such a clutch assembly can be designed, for example, as a friction clutch, a positive-lock clutch, or a torque converter clutch. The first clutch part and the second clutch part can be engaged and disengaged, thereby establishing or disengaging a "drive connection," for example, force-locking and / or positive-locking. The "drive connection" describes a state and / or property in which forces, torques, or, for example, angles of rotation can be transmitted via the clutch assembly. If no "drive connection" is present, this transmission capability is reduced or rendered inoperative.The core idea of ​​the invention is to disable this "drive connection", particularly by mechanical means, in order to, for example, To be able to move bollards freely.

[0020] An "operating device" describes, in particular, a mechanical device, which is used, for example, by The bollard can be operated by an operator for emergency release, i.e., it can be manipulated manually or with the aid of a tool or other device, so that the first and second coupling parts are then disengaged by means of the operating device. For example, such an operating device could be a lever, a threaded connection, a tool connection, or a connection for a special locking tool, whereby the action on the first and / or second coupling part can also be indirect.

[0021] In order to implement the bollard drive simply and in a technically straightforward manner, the first coupling part and / or the second coupling part has or have a coupling wheel operatively connected to the gearbox, wherein the coupling wheel can be disengaged from the respective other coupling part by means of a mechanical action on the coupling wheel, in particular by axial displacement of the coupling wheel along an axis direction and / or radial displacement of the coupling wheel in a decoupling direction, in particular essentially orthogonal to the direction of movement.

[0022] A "coupling wheel" is, in particular, a friction wheel or a gear which engages with or engages the respective other coupling part through a radial force-fit in the case of a friction wheel or through a radial force-fit and form-fit in the case of a gear, and can thus transmit a force. A drive connection is established. To engage the first and second coupling parts, the coupling wheel is then "shifted." This shifting describes a mechanical movement such that the coupling wheel is physically moved or at least relieved of load, so that, in the case of a friction wheel, for example, the frictional connection is reduced and / or eliminated, or, in the case of a gear, corresponding teeth are disengaged by the shifting. "Mechanical action" on the coupling wheel describes a physical contact of the corresponding coupling wheel to effect the shifting. This mechanical action can be either direct or indirect, for example, via a lever mechanism or an inclined plane of a wedge-shaped component of the drive moving at an angle to the inclined plane.

[0023] In particular, this involves an "axial displacement" of the coupling wheel, i.e., a displacement along an axis that defines a rotation of the coupling wheel, and / or a "radial displacement" of the coupling wheel in the direction of a radius, i.e., in the case of a friction wheel, in the direction of a reduction in the contact pressure of the friction wheel, or in the case of a gear, in the direction of disengaging corresponding teeth. The radial displacement occurs essentially orthogonally to the direction of movement, so that a corresponding force acting on the shut-off element and thus on the drive element does not exert a force in the direction of The first coupling part is disengaged from the second coupling part, meaning that unlocking the locking bollard is not possible solely through improperly applied force. In this context, a "decoupling direction" describes the direction in which the coupling wheel must be moved to achieve the corresponding decoupling or unlocking of the locking bollard.

[0024] In one embodiment, the second coupling part has a connecting rod that can be engaged with the first coupling part, wherein the connecting rod can be disengaged from the first coupling part, in particular by moving the connecting rod by means of a mechanical action on the connecting rod in a decoupling direction that is essentially orthogonal to the direction of movement and / or by means of a mechanical rotation of the connecting rod about a decoupling axis that is essentially parallel to the direction of movement, wherein the rotatably mounted connecting rod has a change in radius relative to the decoupling axis that can be positioned by rotation along a circumference.

[0025] In this way, a bollard drive can be created, particularly in conjunction with the coupling wheel, in which the coupling wheel does not need to be moved radially, meaning that a corresponding axis of the coupling wheel does not need to be elaborately designed to move, but rather the coupling rod is essentially orthogonal to the direction of movement and / or can be disabled by means of rotation.

[0026] A "connecting rod" is, in particular, a rod-shaped or rod-shaped mechanical assembly or a corresponding rod-shaped component, which, for example, in the case of a friction wheel, is equipped as a mechanical body with a friction surface, or in the case of a gear, is designed as a rack and pinion drive and can be disengaged in the direction of the depth of corresponding teeth. The connecting rod can be designed to be movable or changeable both translationally and rotationally. Disengagement can be achieved with a translational movement, or additionally or alternatively with a rotational movement, whereby, in the case of a rotational movement, corresponding changes in radius along the circumference enable disengagement.

[0027] A "decoupling axis" refers to a pivot axis essential for the connecting rod, running essentially along a longitudinal direction, around which, for example, the connecting rod is rotatably mounted or supported. A "change in radius" in this context refers to a constriction and / or widening of a corresponding radius of the connecting rod, particularly in the area of ​​engagement with a corresponding gear or a co-acting component, such that rotating the connecting rod by means of the change in radius causes a geometrically translational movement. The function during rotation is analogous to a Camshaft.

[0028] In order to make the bollard drive simple, self-locking and technically reliable, the first coupling part and / or the second coupling part, in particular the connecting wheel, is a gear, wherein in particular the second coupling part, in particular the connecting rod, is a rack.

[0029] In particular, this interaction between the gear and rack, and the corresponding disengagement of the rack in a decoupling direction essentially orthogonal to the direction of movement, allows for a simple emergency release of the bollard drive, ensuring the reliability of the bollard drive's operation during normal operation at all times. Furthermore, suitable gears and racks are readily available as standard parts and offer the advantage over, for example, a friction pair, that no slippage occurs and reliable operation is enabled, especially under difficult weather conditions such as frost or rain.

[0004] The emergency release can be achieved, for example, by removing the rack, moving the rack, or rotating the rack.

[0030] In another embodiment, the coupling device has a locking device mechanically connected to the operating device and acting on the first coupling part and / or the second coupling part. on , wherein the locking device in a locking position holds the first coupling part in engagement with the second coupling part and operation of the operating device by a mechanical action of the operating device on the locking device moves and / or rotates the locking device into a release position such that the first coupling part and / or the second coupling part is or are released by the moved or rotated locking device and thus the first coupling part and the second coupling part can be disengaged .

[0031] In this design, the bollard drive is particularly easy to operate in an emergency, as the locking device can be moved, rotated, and / or removed, thereby disengaging the first and second coupling parts. Using the example of a friction wheel engaged with a friction rod, the locking device can support the friction rod in such a way that the locking device acts and is arranged parallel to the friction rod, and removing, moving, or rotating the locking device allows the friction rod to move freely, thus releasing the frictional connection between the friction wheel and the friction rod and allowing the bollard drive to be operated freely.

[0032] In this context, a "locking device" is a mechanical component, for example in the form of a wedge or a locking block, which acts on the first coupling part and / or the second coupling part, whereby this effect is active in the "locking position" and thus the first coupling part The locking device is held in engagement with the second coupling part and, by operating the control device, is moved into a "release position" such that in this release position the first coupling part and / or the second coupling part is released, and thus the corresponding coupling parts can be disengaged. Analogous to the example of the connecting rod described above, the locking device can also be designed to be rotatable, so that, by changing the radius of a locking rod or locking device, a release position with, for example, a reduced local radius and a locking position with, for example, a locally increased radius can be achieved.

[0033] In order to make the bollard drive particularly easy to assemble, the locking device has a locking rod, wherein the locking rod mechanically acts on the second coupling part, in particular on the connecting rod, and in the locking position holds the second coupling part, in particular the connecting rod, in engagement with the first coupling part, and moving, rotating and / or removing the locking rod releases the connecting rod and thus the connecting rod can be disengaged from the first coupling wheel, in particular the gear.

[0034] A "locking rod" is, for example, a prismatic or essentially round component that is arranged parallel to the second coupling part, in particular parallel to the connecting rod. Using the example of a gear engaging with a rack, this [locking rod] holds the [gear] in place. The locking bar then engages the rack with the gear and, when the locking bar is removed, moved and / or rotated, allows the rack to move or partially, due to geometry, radially away from the gear, thereby mechanically disengaging the rack from the gear.

[0035] In one embodiment, the connecting rod, in particular the rack, has on a rear side facing away from the first coupling part a guide device for guiding the connecting rod on a bearing device that can be engaged with the guide device, wherein the guide device in particular has a groove and the groove is designed with flanks such that the flanks surround the bearing device, wherein the locking rod can be inserted into the guide device, in particular into the groove between the connecting rod and the bearing device, so that the bearing device forms a counter bearing for the locking rod.

[0036] In this design, several functions can be combined in individual components. For example, the guide device arranged on the back of the rack, in the form of a groove, is suitable for receiving, for instance, corresponding rolling bearing outer rings, thus guiding the rack axially to the gear and, due to the appropriate depth of the groove, allowing the rack to oscillate or move radially to the gear. The change in radius then also enables, for example, a Releasing the corresponding outer ring of the rolling bearing to unlock the locking bollard.

[0037] A "guide device" is a mechanical design of the connecting rod on its rear side, such that it allows for guidance, for example, by mechanical engagement with a corresponding bearing device. In particular, this guide device is designed as a groove, i.e., it has "flanks" which effectively prevent, for example, the connecting rod from shifting parallel to the direction of the coupling wheel, especially the gear.

[0038] If the locking rod is now inserted into the groove, in particular between the connecting rod and / or rack and a corresponding bearing device, or rotated into a corresponding rotary position, the engaged connecting rod can be guided almost without play with the bearing device, and removing or rotating the locking rod can cause the connecting rod, in particular the rack, to swing or move in the direction of the bearing device due to the freed installation space resulting from the missing locking rod or due to the change in radius, so that the connecting rod with the connecting wheel, in particular the rack with the gear, is disengaged.

[0039] A suitable "bearing device" is, for example, a journal, a plain bearing or a rolling bearing, whereby in particular the outer ring of a The rolling bearing engages in the groove and against the flanks of the guide device.

[0040] A "counter bearing" describes the mechanical fixing of the locking rod as described above, in that the bearing device, in particular one or more rolling bearings, forms a mechanical stop point or mechanical stop points for the locking rod and thus the locking rod is mechanically fixed in such a way that when the locking rod is inserted within the guide device or rotated accordingly, it is no longer possible to move the connecting rod, in particular the rack, out of engagement.

[0041] In order to make the bollard drive easy to operate and uncomplicated in case of emergency, malfunction or defect, the operating device has a control element accessible in particular from the top of the barrier body for operating the device, whereby in particular by means of the control element it is possible to act on the locking device and / or to remove and / or rotate the locking bar.

[0042] In this design, it is possible to operate the control device directly from the top of the shut-off body, thus enabling reliable operation even when the shut-off body is partially or completely lowered towards the opening position.

[0043] A “top side” describes, for example, a side of the barrier body arranged against the direction of gravity, which, in the case of a barrier bollard that is typically retractable into the ground, describes the top side of the barrier body, i.e., the retractable part of the barrier bollard, which is also accessible when retracted.

[0044] In particular, the control element makes it possible to influence the locking bar in such a way that the locking bar is directly accessible and removable, for example through an access hole in the top.

[0045] In one embodiment, the operating element has in particular a handle, a tool connection and / or a lock, so that the operating element can be operated with one hand, with an operating tool and / or with a key, wherein the operating element is in particular associated with a variable cover device to protect the operating device against the ingress of dirt.

[0046] In this design, different levels of safety and convenience for the bollard drive can be achieved, particularly in conjunction with a corresponding barrier bollard. If the operating element is equipped with a handle, the barrier bollard can be released in an emergency by anyone at any time. Such a design is particularly useful, for example, if the barrier bollard is used in a parking lot monitored by a person and only This serves traffic control purposes. If the bollard drive is equipped with a tool connection and / or a lock, it can only be unlocked in an emergency if a suitable tool or key is available. For example, a corresponding key can be made available to an authorized person or authority, so that, for instance, only the police or fire department can unlock a bollard drive.

[0047] In this context, a "handle" is a manually operated mechanical element, which can also be designed in such a way that, for example, a locking bar can be removed directly with the handle.

[0048] A “tool connection” with a matching “operating tool” can, for example, be an element that can be operated with a standard tool, such as an Allen key or a multi-tooth wrench.

[0049] A “lock” with a matching “key” represents a special form of tool connection with a corresponding operating tool, whereby the corresponding “key” can be mechanically or electronically coded, so that access to the corresponding lock is only possible with a matching key.

[0050] In its simplest form, a "variable cover device" is a dust cap or a rotating or sliding cover. Lip which protects the operating device against the ingress of dirt.

[0051] In another embodiment, the locking bar can be designed in such a way that a key engages a lock arranged on the locking bar or mechanically connected to the locking bar, and by releasing the locking bar simultaneously with the key, it is also possible to lift or turn the locking bar out of the bollard, so that an emergency unlocking of the bollard drive is made particularly easy and practical.

[0052] In another aspect, the task is solved by a bollard with a bollard drive according to one or more of the previously described design forms.

[0053] A suitable bollard is easy to operate, particularly safe, can be technically simple to implement using an electric drive, and yet offers a quick and convenient emergency release option.

[0054] The invention will be further described using the following examples: This will be explained in more detail using examples. They show Figure 1 is a schematic representation of a Bollard drive in a side view, Figure 2 is a schematic representation of the bollard- Drive from Figure 1 in a cut orthogonal view to the side view of Figure 1 , Figure 3 shows a schematic view of the bollard. Drive of Figure 1 in an uncut orthogonal view to the side view of Figure 1 , Figure 4a shows a sectional view through a Rack and pinion of the bollard drive of figures 1 to 3 , Figure 4b shows a sectional view through an alternative rack of the bollard- Drive of figures 1 to 3 , Figure 5 shows a schematic overview of a bollard in a side view. Figure 6 shows a top view of a top surface of the bollard of figure 5 , Figure 7 shows a sectional view through the bollard of figure 5 , Figure 8 is a top view from the direction of a The top of the bollard is fitted with an alternative rack for the bollard drive shown in Figures 1 to 3, as well as... Figure 9 is a schematic representation of a Emergency key for operating a Locking bar of the alternative rack of figure 8.

[0055] A bollard drive 101 is designed as an electromechanical bollard drive and has a drive housing 103 with two parallel sides 104. The drive housing 103 can also include, for example, a control unit or a functional element for, say, lighting, an acoustic signal generator, or heating. An encapsulated control unit can also be used. A gear unit 105 and an electric motor 107 rigidly connected to the gear unit 105 are arranged on the drive housing 103 (schematically shown). The gear unit 105 has an internal gearbox (not shown in detail), which is a worm gear drive. Thus, the electric motor 107 is self-locking together with the gear unit 105.Alternatively or additionally, self-locking can also be generated by means of a controlled drive of the electric motor 107, for example, if the motor exerts a corresponding holding force in the form of a torque on the gearbox. The gearbox unit 105 drives a gear 121, driven by the electric motor 107. The gear 121 is arranged between the webs 104. A guide tube 109, which accommodates a rack 201, is also arranged between the webs 104. The rack 201 has teeth 203 on a front face 204, so that the rack 201 can be driven by the gear 121. On a rear face 206, the rack 201 has flanks 205. which is located on a guide bearing 131 and a guide bearing The rack 201 is guided between the cheeks 104, so that axial movement of the rack relative to the gear 121 is almost impossible. Within the flanks 205, a release rod 301 is inserted along the full length of the rack 201 on the rear side 206, thus reducing the size of a groove 207 bounded by the flanks 205 in the direction between the front side 204 and the rear side 206. With the release rod 301 inserted within the groove 207, the rack 201 is held almost without play between the guide bearings 131 and 133 and the gear 121, so that the gear 121 is securely engaged with the teeth 203 of the rack 201. A connection 111 is arranged on the guide tube 109 on a lower side 181 of the bollard drive 101. On the opposite upper surface 183, the rack 201 also has a connection, namely the connection 211.

[0056] The release rod has an additional threaded bore 303 on its upper side 183, which serves to screw in a corresponding tool with a thread and thus to be able to remove the release rod 301 axially from the groove 207 to the rack.

[0057] The release rod 301 thus allows for two states for the bollard drive 101:

[0058] If the release rod 301 is inserted into the groove 207 of the rack 201, the rack is engaged with the gear 121 as described. If the release rod 301 is removed, the rack can The teeth 203 slide radially to the gear 121 on the guide bearings 131 and 133 along a release direction 391, thus disengaging the teeth 203 from the gear 121. The rack 201 of the bollard drive 101 is then freely axially movable within the guide tube 109 and thus along a movement axis 191. If the rack 201 is engaged with the gear 121, it can be moved by a motor along the movement direction 191. Alternatively, the gear 121 can also be axially locked by means of a wedge or a locking rod and, after removing the wedge or locking rod, moved axially to disengage the gear 121 from the rack 201.

[0059] According to an alternative embodiment (see Figure 4b), a rack 401 is designed analogously, which has teeth 403 on a front face 404. In the area of ​​a groove 407 with flanks 405 on a rear face 406, however, in contrast to the previous example, a release rod 402 is arranged rotatably within the rack 401 about a pivot axis 481. This release rod is slidably mounted in a rotary guide 408 and is thus rotatable in a direction of rotation 493. The release rod 403 has a flat section 409, which locally causes a change in radius such that the rack 401 can be geometrically released in the direction of a release device 491 (shown in the release position in Figure 4b; the locking position is shown here with a dashed line and a locally increased radius due to rotation). In the locking position, the release rod 402 is then effective with its full radius. so that the rack with teeth 403 is engaged with the gear 121.

[0060] The bollard drive 101 is installed within a barrier bollard 501. The barrier bollard 501 has a base body 503, which is, for example, firmly embedded in the subsoil of a paved parking lot, and a base plate 505. The base plate seals the base body 503 against the surrounding soil. The base body 503 is designed as a tube and has a cover 506 on its upper surface, which is flush with the paving of the parking lot. Within the tubular base body 503, a bollard body 507 is guided in a support ring 511 and a bearing ring 513 such that the bollard body 507 can be moved out of the subsoil in the direction of a locking 581 and into the subsoil in the direction of a lowering 583 by means of the bollard drive 101 along the axis of movement 191.The support rings 511 and 513 serve in particular to support the bollard body 507 during hard impacts against the bollard 501, for example by a motor vehicle. Furthermore, guide rods (not shown) are provided which guide the bollard body 507 along the axis of movement 191 during normal operation and prevent it from tilting and / or twisting.

[0061] The bollard body 507 is closed at its accessible upper side with a bollard cover 509. Inside the bollard (compare sectional view in Figure 7), the bollard drive 101 is mounted on a receptacle on the base plate 505. Connection 521 is connected to the terminal 111 and is subject to tensile and compressive strength testing. The terminal 211 is secured to a receptacle 523 on the bollard cover 509, which in the example shown is a threaded connection. Alternatively, other connection types can be used, provided they are also tensile and compressive strength tested. Thus, using the bollard drive 101, the bollard body 507 can be actively raised from the ground and lowered into the ground, even if partially blocked, for example, by frost.

[0062] Inside the bollard cover 509 is a protective cover. 525 is centrally arranged, and in the example shown in Figure 6, it is designed as a simple plastic cover with a bayonet closure. If this protective cover 525 is then removed, for example with a screwdriver, a pocket knife, or a coin, the threaded bore 303 in the release rod 301 is accessible. Mechanical access to the release rod 301 can then be created, for example with a threaded rod, and the release rod can be removed from the bollard cover 509 through an opening exposed by the protective cover 525. The rack 201 is then moved in a pendulum motion towards the guide bearings 131 and 133, thus disengaging from the gear 121. The bollard drive 101 is then released, and the bollard body 507 is lowered into the ground by gravity alone or by pressure on the bollard cover 509.

[0063] An alternative release rod 801 has a simple form of a lock 803, wherein the lock 803 is equipped in the manner of a bayonet lock with an undercut 805 on both sides of an axis of symmetry (compare Figure 8).

[0064] An emergency key 901 is designed with a shaft 903 and corresponding projections 905 to fit the lock 803, so that, for example, after removing the protective cover 525, the emergency key 901 can be inserted into the bollard cover 509. If the emergency key 901 is then hooked into the undercuts 805, the release rod 801 can be removed from the rack 201 with the emergency key 901, and the bollard 501 can thus be unlocked in an emergency. Similarly, the emergency key 901 can also be used for a rotatable release rod 402, for example, with a suitably designed locking mechanism in the release rod 402, to rotate the rack of the release rod 402 and unlock the rack 401.

[0065] Alternatively, the protective cover 525 can also be designed in such a way that, for example, access is only possible with the emergency key 901 or with a different type of emergency key or key, whereby in particular direct access to the corresponding release rod is possible with the key or a similar tool, so that in one movement access to the locking bollard 501 for emergency release is created. and at the same time with the key or The release tool allows the corresponding release rod to be removed or rotated without further steps. Reference character list 101 bollard drive 103 Drive housings 104 Cheek 105 Gear unit 107 Electric motor 109 Guide tube 111 connection 121 gear 131 Command Camp 133 Guide bearings 181 Underside 183 Top 191 Axis of movement 201 Rack and pinion 203 teeth 204 Front 205 flank 206 Back 207 Nut 211 connection 301 Release rod 303 Threaded hole 391 Release direction 401 Rack and pinion 402 Release rod 403 teeth 404 Front Flank, rear side, groove, pivot guide, flat point, axis of rotation, release direction, direction of rotation, locking bollard, base body, base plate, cover, bollard body, bollard cover, guide ring, guide ring, receiver, receiver, protective cover, locking, lowering, release rod, lock, undercut, emergency key, shaft, projection

Claims

Patent claims:

1. Bollard drive (101) for a barrier bollard (501) for moving a barrier body (507) between a locking position (581) and an opening position (583) along a direction of movement (191) relative to a base body (503) connected to a substrate, with a base element (103) connected to the base body (503), a drive unit arranged on the base element (103) with an electric motor (105) and a gearbox (105, 121, 201) for electromechanically driving the shut-off body (507) along the direction of movement (191) relative to the base body (503) by means of a drive unit powered by the transmission (105, 121, 201) and connected to the shut-off body (507) connected drive element (201) , characterized in that the transmission (105, 121) is connected to a coupling device (121, 201, 301) with a first coupling part (121) and a second coupling part (201, 401) is assigned, wherein the coupling device (121, 201, 301, 401, 402) engages when the first The coupling part (121) establishes a drive connection with the second coupling part (201, 401) in the gearbox (105, 121, 201) and the first coupling part (121) and the second coupling part (201, 401) can be disengaged by operating an operating device (303, 901), so that the drive connection is interrupted and the movement of the shut-off element (507) relative to the base body (503) is released.

2. Bollard drive according to claim 1, characterized in that the first coupling part (121) and / or the second coupling part (201, 401) has or have a coupling wheel (121) operatively connected to the transmission (105, 121, 201, 401), wherein the coupling wheel (121) is displaced by means of a mechanical action on the The coupling wheel (121) can be disengaged from the respective other coupling part (121, 201, 401), in particular by axially displacing the coupling wheel (121) along an axis and / or radially displacing the coupling wheel (121) in a decoupling direction that is particularly essentially orthogonal to the direction of movement. A bollard drive according to one of the preceding claims, characterized in that the second coupling part (201, 401) has a coupling with the first coupling part (121) in The connecting rod (201, 401) has a coupling rod that can be engaged, wherein the connecting rod (201, 401) is in particular moved (391, 491) by means of a mechanical action on the Connecting rod (201, 401) in a particularly in Essentially, the decoupling direction (391, 491) is oriented orthogonally to the direction of movement and / or by means of a mechanical rotation (493) of the connecting rod (201, 401) to a substantially parallel to The decoupling axis (481) is aligned with the direction of movement, wherein the rotatably mounted connecting rod (201, 401) has a change in direction (409) relative to the decoupling axis (481) that can be positioned along a circumference by rotation (493), and can be disengaged from the first coupling part (121). A bollard drive according to one of the preceding claims, characterized in that the first coupling part (121) and / or the second coupling part (201, 401), in particular the connecting wheel (121), is a gear (121), wherein in particular the second coupling part (201, 401), in particular the connecting rod (201, 401), is a rack (201, 401). Bollard drive according to one of the preceding claims, characterized in that the coupling device (121, 201, 401) has a locking device (301, 402) mechanically connected to the operating device (303) and acting on the first coupling part (121) and / or on the second coupling part (201, 401), wherein the locking device (301, 402) in a locking position keeps the first coupling part (121) engaged with the second coupling part (201, 401) and prevents operation of the Operating device (303, 901) the locking device (301, 402) by a mechanical action of the operating device (303, 901) on the locking device (301, 402) is moved and / or rotated into a release position such that the first coupling part (121) and / or the second coupling part (201, 401) is or are released by the moved and / or rotated locking device (301, 402) and thus the first coupling part (121) and the second coupling part (201, 402) are released. 401) are able to be disengaged. Bollard drive according to claim 5, characterized in that the locking device (301, 402) is a locking bar (301, 402) wherein the locking rod (301, 402) mechanically acts on the second coupling part (201, 401), in particular on the connecting rod (201, 401), and in the locking position holds the second coupling part (201, 401), in particular the connecting rod (201, 401), in engagement with the first coupling part (121), and a displacement, rotation and / or removal of the locking rod (301, 402) releases the connecting rod (201, 401) and thus the The connecting rod (201, 401) can be disengaged from the coupling wheel (121), in particular from the gear (121). Bollard drive according to claim 6, characterized in that the connecting rod (201, 401), in particular the rack (201, 401) , on a rear side (206, 406) facing away from the first coupling part (121) a Guide device (205, 207, 405, 407) for guiding the connecting rod (201, 401) on a joint with the The guide device (205, 207, 405, 407) has a bearing device (131, 133) that can be engaged with the guide device (205, 207, 407), wherein the guide device (207, 407) in particular has a groove (207, 407) and the groove (207, 407) is designed with flanks (205, 405) such that the flanks (205, 405) engage the bearing device (131, 133), wherein the locking rod (301, 402) engages in the guide device (205, 207, 405, 407), in particular in the groove (207, 407) between the connecting rod (201, 401) and the Storage equipment (131, 133) can be introduced and / or installed in the The groove (207, 407) is rotatable, so that the bearing arrangement (131, 133) forms a counter bearing for the locking bar (301, 402). Bollard drive according to one of the preceding claims, characterized in that the operating device (303, 901) has an operating element (303, 803) for operating the operating device (303, 803), which is accessible in particular from a top side (509) of the locking body (507), wherein in particular the operating element (303, 803) allows action on the locking device (301, 402) and / or removal and / or rotation of the Locking bar (301) is enabled. Bollard drive according to claim 8, characterized in that the operating element (303, 803) in particular a handle, a tool connection (803, 805) and / or a lock (803, 805) so that the control element 303, 803) is designed to be operable with one hand, with an operating tool (901) and / or with a key (901), wherein the operating element (303, 803) is in particular provided with a variable cover device (525) for protecting the Operating device (303, 803) is associated with protection against the ingress of dirt. A bollard (501) with a bollard drive (101) according to any one of the preceding claims 1 to 9.

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