Patent Application
20250109557
The present invention relates to a bollard drive for a blocking bollard for moving a blocking member between a blocking position and an opening position along a movement direction relative to a base body connected to a substrate, the bollard drive comprising a base element which is connected to the base body, a drive unit which is arranged on the base element and which has an electric motor and a transmission for electromechanically driving the blocking member along the movement direction relative to the base body via a drive element which is driven by the transmission and which is connected to the blocking member.
Bollard drives or also blocking bollards as a whole are known in various designs. Corresponding blocking bollards serve, for example, for blocking a surface which is intended to be accessible only temporarily or accessible only for authorized persons and/or vehicles. A variety of hydraulically operated bollard drives are known in which a hydraulic pump is actuated via an electric motor, and the actual bollard drive for raising and/or lowering the actual bollard takes place via a hydraulic cylinder. The emergency unlocking is in particular very easy in such bollard drives since a valve merely needs to be switched in a supply line to the hydraulic cylinder in order to release corresponding pressure of the hydraulic fluid in order for the bollard to be lowerable.
Electrical bollard drives are also known. Such electrical bollard drives may be provided with a self-locking of the electric drive, for example, for reasons of protection against misuse. A corresponding emergency unlocking by merely de-energizing the electric motor is technically not possible for these drives. Electrical bollard drives are also known which are battery-operated and which are not self-locking. These electrical bollard drives can be moved, for example, in the case of a power failure, after overcoming a resistance. Electrical bollard drives, which can be designed significantly more simply than hydraulic bollard drives in technical terms, thus do not currently provide the same security level as, for example, a hydraulic bollard drive, in particular if they must be moved, for example, in the event of a technical failure or also in an emergency.
WO 80/02576 describes a barrier post that can be unlocked. The drive of the barrier post takes place via a chain which is driven by a transmission. A releasable coupling is used to decouple the chain drive from the barrier post. The actual decoupling process can thereby be triggered via a tool.
US 2020/0131837 A1 describes a drive mechanism which can be unlocked for a sliding door. A gearwheel of the drive mechanism that engages in a gear rack drive can in this case be decoupled from the drive via a switchable coupling.
FR 2 853 683 A1 describes a drive unit comprising a motor, via which a sliding door drive is implemented. A gearwheel engages in a gear rack for driving the sliding door, wherein the drive gearwheel can be pivoted out of engagement with the gear rack to unlock the sliding door.
U.S. Pat. No. 6,343,436 B1 describes a drive unit for a window. A sliding element of a vertical sash window is movable via a motorized drive unit. The drive unit comprises a gear rack drive having a gear rack and a gearwheel, wherein the gear rack can be disengaged from the gearwheel by partially dismantling the drive unit to release the slide element.
An aspect of the present invention is to improve upon the prior art.
In an embodiment, the present invention provides a bollard drive for a blocking bollard for moving a blocking member between a blocking position and an opening position along a movement direction relative to a base body which is connected to a substrate. The bollard drive includes a base element which is connected to the base body, a drive unit which is arranged on the base element, a coupling device, and an operating device. The drive unit comprises an electric motor, a transmission, and a drive element which is connected to the blocking member. The electric motor and the transmission are configured to electromechanically drive the blocking member along the movement direction relative to the base body via the drive element being driven by the transmission. The coupling device comprises a first coupling part and a second coupling part. The coupling device is associated with the transmission and is configured to establish a driving connection in the transmission upon an engagement of the first coupling part with the second coupling part. The first coupling part and the second coupling part are configured to be disengaged via an operation of the operating device so as to interrupt the driving connection and to release a movement of the blocking member relative to the base body.
The present invention is described in greater detail below on the basis of embodiments and of the drawings in which:
The present invention provides a bollard drive for a blocking bollard for moving a blocking member between a blocking position and an opening position along a movement direction relative to a base body which is connected to a substrate, the bollard drive comprising a base element which is connected to the base body, a drive unit which is arranged on the base element and which has an electric motor and a transmission for electromechanically driving the blocking member along the movement direction relative to the base body via a drive element which is driven by the transmission and which is connected to the blocking member, wherein the transmission is associated with a coupling device having a first coupling part and a second coupling part, wherein the coupling device establishes a driving connection in the transmission upon engagement of the first coupling part with the second coupling part, and the first coupling part and the second coupling part can be disengaged by operation of an operating device so that the driving connection is interrupted and the movement of the blocking member relative to the base body is released.
The coupling device thus allows for a simple, a rapid, and above all a reliable interruption of the driving connection by operation of the operating device so that a corresponding part of the bollard drive, specifically the drive element, is movable freely or at least with less locking, and thus the blocking member can be transferred out of the blocking position into the opening position without having to overcome the electric motor and/or the transmission and/or in particular a self-locking of parts of the electric motor and/or of the transmission.
The following terms are explained in connection therewith:
A “bollard drive” describes a technical device which, for example, produces a mechanical movement from electrical drive energy and which serves for driving a bollard or also a blocking bollard. A bollard drive of this kind can in this case use various drive methods, and for the present invention this in particular refers to those bollard drives which convert electrical energy directly into the movement of corresponding parts of a bollard via an electric motor, and in particular have a gear rack drive and/or a frictional drive principle.
Within the meaning of the present invention, “blocking bollards” are in particular posts or pillars or elements of similar design, which are made of different materials, which are used in road traffic and/or also in stationary traffic. Such blocking bollards are installed in a stationary manner in order to, for example, prevent travelling or parking on regions, such as pavements, cycle paths or also emergency access areas. In order to allow for temporary passage, for example, for emergency vehicles, authorized residents or other authorized persons and/or vehicles, blocking bollards are designed in various ways to be movable or adjustable between a blocking position and an opening position.
In the case of the present invention, the blocking and/or prevention of access takes place via a “blocking member”, i.e., the part of a blocking bollard which can, for example, be inserted at ground level or which can be retracted into the ground. The blocking member is in this case in particular a rod-shaped or bollard-shaped device which is arranged to be movable relative to a base body connected to the substrate. The “blocking member” can likewise also be a part of the bollard drive which moves a further part of the blocking bollard, for example, via a lever mechanism, if, for example, a linear movement of the blocking member is converted into a folding movement for the actual bollard. A “movement” of the blocking member in this case in particular describes a translational movement along a “movement direction”, i.e., along, for example, a movement axis which is defined by the bollard drive. The “movement direction” can in this case also be part of a lever transmission or a lever mechanism, wherein the “movement direction” in this case describes the main direction of action of the actual bollard drive.
A “substrate” is in this case, for example, the ground, a paving, a foundation, or another suitable fastening in which what is known as the “base body”, i.e., a fixed component of the blocking bollard”, is correspondingly connected or anchored.
A “base element” in this case describes the part of the bollard drive on which, for example, drive components and/or electrical components are fastened. A “drive unit” is, for example, fastened or arranged on the base element, which drive unit comprises an electric motor and also a transmission. The drive unit in this case makes possible a direct electromechanical driving of the blocking member along the movement direction. An “electric motor” is an electromechanical converter, i.e., an electric machine, to which electrical power is supplied and which can then output mechanical power. Current-carrying conductor coils are, for example, used in conventional electric motors in order to generate magnetic fields and thus perform a rotational movement or also a linear movement. Electric motors of this kind are known to be mechanically or also electrically commutated, wherein both embodiments may in this case be expedient for the present invention. An asynchronous motor or also any other electrically drive motor can likewise be used. A corresponding electric motor can likewise be designed so that a penetration of moisture is effectively prevented, or the electric motor is protected against a penetration of moisture. A “transmission” is in this case a mechanical translation or reduction unit via which a movement generated by the electric motor is converted into a movement of the components of the bollard drive along the movement direction. This is in particular a gearwheel transmission or a worm gear transmission which can in particular also be designed to be self-locking.
In connection therewith, “electromechanical driving” refers to a direct driving of the corresponding components of the bollard drive via the electric motor by further mechanical components, contrary to otherwise known hydraulically transmitted drives.
A “drive element” of the bollard drive in this case refers to a movable element, whereas the base element is arranged, with the drive unit, to be stationary with respect, for example, to the base body of the blocking bollard. A drive element of this kind is in this case, for example, a drive rod, a connection element, or another mechanical component which is mechanically connected to the blocking member and which drives the blocking member, wherein the drive element itself is driven by the transmission.
A “coupling device” comprises a “first coupling part” and at least one “second coupling part”, and thus two components that act mechanically on one another and which interact with one another, wherein a coupling device of this kind can in this case, for example, be designed as a frictional coupling, a form-fitting coupling, or also as a converter coupling. The first coupling part and the second coupling part can in this case be brought into engagement and disengaged, as a result of which a “driving connection” can, for example, be established or separated in a force-fitting and/or form-fitting manner. The “driving connection” in this case describes a state and/or a property in which or via which forces, torques or, for example, rotational angles can be transmitted by the coupling device. If no “driving connection” is present, this possibility of transmission is reduced or stops functioning. The basic concept of the present invention is in this case to stop the functioning of the “driving connection” in particular by a mechanical element, in order, for example, to be able to freely move a blocking bollard.
An “operating device” in this case in particular describes a mechanical device which can, for example, be operated by a user for an emergency unlocking of the blocking bollard, i.e., can be manipulated manually or also with the aid of a tool or with the aid of an auxiliary device so that the first coupling part and the second coupling part are then disengaged by the operating device. An operating device of this kind is, for example, a lever, a threaded connection, a tool connection, or also a connection for a special securing tool, wherein the action on the first coupling part and/or on the second coupling part can also take place indirectly.
In order to design the bollard drive in a simple and technically easily implementable manner, the first coupling part and/or the second coupling part comprises or comprise a coupling wheel that is operatively connected to the transmission, wherein the coupling wheel can be disengaged from the respective other coupling part by a displacement via a mechanical action on the coupling wheel, in particular by an axial displacement of the coupling wheel along an axial direction and/or a radial displacement of the coupling wheel in a decoupling direction that is oriented in particular substantially orthogonally to the movement direction.
A “coupling wheel” is in this case in particular a friction wheel or also a gearwheel which engages in or which acts on the respective other coupling part by a radial force-fitting connection in the case of a friction wheel or by a radial force-fitting and form-fitting connection in the case of a gearwheel, and can thus transmit a force and thereby establishes a driving connection. In order to bring the first coupling part and the second coupling part into engagement, a “displacement” of the coupling wheel is then performed, wherein a displacement of this kind describes a mechanical movement so that in particular the coupling wheel is moved physically or at least unloaded, so that in the case of a friction wheel, for example, a frictional connection is reduced and/or lifted, or in the case of a gearwheel, corresponding teeth are disengaged by the displacement. In this case, “mechanical action” on the coupling wheel describes a physical contacting of the corresponding coupling wheel in order to bring about a corresponding displacement. This mechanical action can in this case take place both directly and also indirectly via, for example, a lever transmission or, for example, an oblique plane of a wedge-shaped component of the drive that is moved obliquely to the oblique plane.
An “axial displacement” of the coupling wheel in particular takes place in this case, i.e., a displacement along an axial direction 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 of a contact pressure of the friction wheel, or in the case of a gearwheel, in the direction of disengagement of corresponding teeth. The radial displacement in this case takes place substantially orthogonally to the movement direction so that a force acting accordingly on the blocking member and thus on the drive element does not result in any force in the direction of disengagement of the first coupling part from the second coupling part, i.e., unlocking of the blocking bollard is not possible via an inappropriately applied force alone. A “decoupling direction” in connection therewith describes the direction in which a displacement of the coupling wheel is necessary in order to bring about a corresponding decoupling or an unlocking of the blocking bollard.
In an embodiment of the present invention, the second coupling part can, for example, comprise a coupling rod that can be brought into engagement with the first coupling part, wherein the coupling rod can be disengaged from the first coupling part in particular by a displacement of the coupling rod by a mechanical action on the coupling rod in a decoupling direction oriented in particular substantially orthogonally to the movement direction, and/or by a mechanical rotation of the coupling rod about a decoupling axis oriented substantially in parallel with the movement direction, wherein the rotatably received coupling rod has a radius change relative to the decoupling axis, along a periphery, which change can be positioned via the rotation.
In particular in conjunction with the coupling wheel, a bollard drive can in this way be provided in which the coupling wheel does not, for example, need to be moved radially, i.e., a corresponding axle of the coupling wheel need not be designed in a complex movable manner, but rather, the coupling rod can be disengaged substantially orthogonally to the movement direction and/or by the rotation.
A “coupling rod” is in this case in particular a rod-shaped or bar-shaped mechanical assembly or a corresponding rod-shaped component which, for example, in the case of a friction wheel as the mechanical body, is equipped with a friction surface, or, in the case of a gearwheel as a device, is designed as a gear rack, and can then be disengaged in the direction of the depth of corresponding teeth. The coupling rod can in this case be designed to be movable or changeable both in translation and in rotation. Disengagement can in this case take place both via a translational movement and also additionally or alternatively via a rotational movement, wherein, in the case of a rotational movement, a corresponding radius changes along the periphery to allow for disengagement.
A “decoupling axis” in this case refers to an axis of rotation that is essential for the coupling rod and that extends substantially along a longitudinal direction about which, for example, the coupling rod is rotatably mounted or received. A “radius change” in connection therewith denotes a constriction and/or a widening of a corresponding radius of the coupling rod that is present in particular in the region of the engagement with a corresponding gearwheel or an identically acting component so that a twisting of the coupling rod via the radius change causes a geometrically translational movement. The function upon rotation is in this case analogous to a camshaft.
In order to be able to design the bollard drive in a simple, self-locking and technically reliable manner, the first coupling part and/or the second coupling part, in particular the coupling wheel, is a gearwheel, wherein in particular the second coupling part, in particular the coupling rod, is a gear rack.
An emergency unlocking of the bollard drive can be achieved in a simple manner, in particular via this interaction between the gearwheel and gear rack and a corresponding disengagement of the gear rack in a decoupling direction oriented substantially orthogonally to the movement direction, wherein the reliability of the operation of the bollard drive in normal operation is at all times provided. Corresponding gearwheels and also gear racks are furthermore readily available as standard parts and have the advantage compared with a friction pairing, for example, that no slip occurs, and a reliable operation is possible, in particular in the case of difficult weather conditions such as frost or rain. The emergency unlocking can in this case take place, for example, by removing the gear rack, moving the gear rack, or also twisting the gear rack.
In an embodiment of the present invention, the coupling device can, for example, comprise a blocking device that is mechanically connected to the operating device and which acts on the first coupling part and/or on the second coupling part, wherein the blocking device holds the first coupling part in engagement with the second coupling part in a blocking position, and an operation of the operating device displaces and/or rotates the blocking device into a release position, by mechanical action of the operating device on the blocking device, so that the first coupling part and/or the second coupling part is or are released by the displaced and/or rotated blocking device, and thus the first coupling part and the second coupling part can be disengaged.
In this embodiment, the bollard drive is easily operable in an emergency, in particular in that the blocking device is moved, rotated and/or removed, and thus the first coupling part and the second coupling part can be disengaged. Based on the example of a friction wheel in engagement with a friction rack, for example, the blocking device can in this case support the friction rack so that the blocking device acts and is arranged in parallel with the friction rack, and a removal, movement, or rotation of the blocking device allows the friction rack to become freely movable so that the frictional connection between the friction wheel and friction rack is released and thus the bollard drive is operable in a freely movable manner.
A “blocking device” in connection therewith is a mechanical component which is designed, for example, in the form of a chock or in the form of a locking block and in this case acts on the first coupling part and/or the second coupling part, wherein the action is active in the “blocking position” and thus the first coupling part is held in engagement with the second coupling part and the blocking device is displaced into a “release position” via operation of the operating device so that the first coupling part and/or the second coupling part is released in this release position, and thus the corresponding coupling parts can be disengaged. Analogously to the above-mentioned example of the coupling rod, the blocking device can alternatively or additionally also be designed to be rotatable so that a release position having, for example, a reduced local radius and a blocking position having, for example, a locally increased radius can also be achieved on the basis of the radius change of a locking bar or blocking device.
In order to be able to construct the bollard drive in a particularly simple manner, the blocking device comprises a locking bar, wherein the locking bar acts mechanically on the second coupling part, in particular on the coupling rod, and holds the second coupling part, in particular the coupling rod, in engagement with the first coupling part in the blocking position, and a displacement, rotation and/or removal of the locking bar releases the coupling rod, so that the coupling rod can be disengaged from the first coupling wheel, in particular from the gearwheel.
A “locking bar” in this case is, for example, a prismatic or also substantially round component which is arranged in parallel with the second coupling part, in particular in parallel with the coupling rod. Based on the example of the engagement of a gearwheel with a gear rack, the locking bar then holds the gear rack in engagement with the gearwheel and, upon removal, a movement and/or a rotation of the locking bar allows for a movement or also a partial, geometry-based evasion movement of the gear rack radially away from the gearwheel, wherein the gear rack is thereby mechanically disengaged from the gearwheel.
In an embodiment of the present invention, the coupling rod, in particular the gear rack can, for example, comprise a guide device on a rear side facing away from the first coupling part for guiding the coupling rod on a bearing device that can be brought into engagement with the guide device, wherein the guide device in particular comprises a groove and the groove is designed having flanks so that the flanks encompass the bearing device, wherein the locking bar can be inserted in the guide device, in particular into the groove, between the coupling rod and the bearing device, so that the bearing device forms a counter bearing for the locking bar.
In this embodiment, a plurality of functions can be combined in respective components. The guide device, in groove form, arranged on the rear side, for example, of the gear rack, is thus suitable, for example, for receiving corresponding rolling bearing outer rings and thus for guiding the gear rack axially with respect to the gearwheel and, on account of the corresponding depth of the groove, for allowing for oscillation or movement of the gear rack radially to the gearwheel. The radius change then also allows, for example, a release of the corresponding rolling bearing outer ring for unlocking the blocking bollard.
A “guide device” is in this case a mechanical formation of the coupling rod on the rear side thereof so that guidance, for example, with mechanical engagement in a corresponding bearing device, is made possible. The guide device is in this case in particular designed as a groove, i.e., comprises “flanks”, which effectively prevent, for example, a displacement of the coupling rod in parallel with the direction of the coupling wheel, in particular of the gearwheel.
If the locking bar is now introduced into the groove, in particular between the coupling rod and/or gear rack and a corresponding bearing device, or rotated into a corresponding rotational position, the coupling rod, which is in engagement, can then be guided in a virtually play-free manner using the bearing device, and a removal or rotation of the locking bar can lead to the coupling rod, in particular the gear rack, being able to oscillate or move in the direction of the bearing device, on account of the released installation space, on account of the lacking locking bar or on account of the radius change, so that the coupling rod is disengaged from the coupling wheel, in particular the gear rack from the gearwheel.
A corresponding “bearing device” is in this case, for example, a journal, a plain bearing or also a rolling bearing, wherein the outer ring of a rolling bearing in particular engages in the groove and on the flanks of the guide device.
A “counter bearing” in this case describes the mechanical fixing of the locking bar 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 bar, and thus the locking bar is mechanically fixed so that, in the case of a locking bar that is inserted inside the guide device or rotated accordingly, a disengagement movement of the coupling rod, in particular the gear rack, is no longer possible.
In order to design the bollard drive so as to be operable easily and, in an emergency or also in the case of a simple malfunction or in the case of a fault, without complication, the operating device comprises an operating element that is in particular accessible from an upper side of the blocking member and is intended for operating the operating device, wherein action on the blocking device and/or removal and/or rotation of the locking bar is possible via the operating element.
This embodiment makes it possible to operate the operating device directly from the upper side of the blocking member, and thus to enable a reliable operation also when the blocking member is lowered in part or completely in the direction of the opening position.
An “upper side” in this case describes, for example, a side of the blocking member which is arranged counter to the direction of gravity which, in particular in the case of a blocking bollard that can typically be lowered into the ground, describes the upper side of the blocking member that is also accessible in the lowered state, i.e., the lowerable part of the blocking bollard.
Action on the locking bar is in this case possible in particular via the operating element so that the locking bar is directly accessible and removable, for example, through an access hole in the upper side.
In an embodiment of the present invention, the operating element can, for example, in particular comprises a handle, a tool connection and/or a lock so that the operating element is designed to be operable by hand, using an operating tool and/or using a key, wherein the operating element is in particular associated with a variable cover device for protecting the operating device against penetration of dirt.
In this embodiment, different safety and convenience levels of the bollard drive can be achieved, in particular in conjunction with a corresponding blocking bollard. If the operating element is in this case equipped with a handle, then an emergency unlocking of the corresponding blocking bollard is possible at any time and by anyone. An embodiment of this kind is, for example, expedient if the blocking bollard is used on a carpark monitored by a person and serves merely to direct traffic. If the bollard drive is equipped with a tool connection and/or a lock, then the bollard drive can be unlocked in an emergency only if a suitable tool or a suitable key is or are present. A corresponding key can, for example, be made accessible to an authorized person or to an authorized authority so that, for example, only the police or the fire service can correspondingly unlock a bollard drive.
A “handle” in this connection is a manually operable mechanical element which can in particular also be designed so that, for example, a locking bar can be removed directly using the handle.
A “tool connection” having a matching “operating tool” can, for example, be an element operable using a standard tool, such as a hex key or a multi-tooth key.
A “lock” having a matching “key” is in this case a particular embodiment of a tool connection having a corresponding operating tool, wherein the corresponding “key” can be mechanically or also electronically coded so that access to the corresponding lock is possible only using a matching key.
In the simplest case, a “variable cover device” is a dust cover or a rotatable or displaceable lip which secures the operating device against penetration of dirt.
In an embodiment of the present invention, the locking bar can in particular be designed so that a key engages in a lock that is arranged on the locking bar or mechanically connected to the locking bar, and raising or rotation of the locking bar out of the blocking bollard is also made possible via a corresponding release of the locking bar simultaneously with the key so that an emergency unlocking of the bollard drive is made possible in a particularly simple and practical manner.
The present invention also provides a blocking bollard comprising a bollard drive according to one or more of the embodiments set out above.
A corresponding blocking bollard is easy to operate, is particularly reliable, can be designed in a technically simple manner via an electrical drive, and nonetheless has a possibility of a quick and convenient emergency unlocking.
The present invention will be explained in greater detail below under reference to embodiments as described in the drawings.
A bollard drive 101 is designed as an electromechanical bollard drive and comprises a drive housing 103 having two parallel cheeks 104. The drive housing 103 can, for example, also comprise a control device or a functional element for, for example, lighting, an acoustic signal generator, or also heating. A molded controller can in this case, for example, also be used. A transmission unit 105 and an electric motor 107 rigidly connected to the transmission unit 105 is arranged on the drive housing 103 (illustrated schematically). The transmission unit 105 comprises an inner transmission (not shown in detail) which is provided as a worm gear transmission. The electric motor 107 together with the transmission unit 105 is thus self-locking. Alternatively, or in addition, self-locking can also be achieved via a controlled drive of the electric motor 107 if this, for example, exerts a corresponding retaining force in the form of a torque on the transmission. The transmission unit 105, driven by the electric motor 107, drives a gearwheel 121. The gearwheel 121 is arranged between the cheeks 104. A guide tube 109, which receives a gear rack 201, is also arranged between the cheeks 104. The gear rack 201 comprises teeth 203 on a front side 204, wherein it is thus possible to drive the gear rack 201 with the gearwheel 121. On a rear side 206, the gear rack 201 comprises flanks 205 which are guided on a guide bearing 131, and a guide bearing 133 between the cheeks 104, so that a movement of the gear rack axially with respect to the gearwheel 121 is virtually excluded. An unlocking rod 301 is inserted inside the flanks 205, on the rear side 206 of the gear rack 201, over the entire length of the gear rack 201, so that a groove 207 delimited by the flanks 205 is made smaller in the direction between the front side 204 and the rear side 206. In the inserted state of the unlocking rod 301 inside the groove 207, the gear rack 201 is received virtually without play between the guide bearings 131 and 133 and the gearwheel 121 so that the gearwheel 121 is securely in engagement with the teeth 203 of the gear rack 201. A connection 111 is arranged on an underside 181 of the bollard drive 101 on the guide tube 109. The gear rack 201 also comprises a connection, specifically the connection 211, on the opposite upper side 183.
The unlocking rod 301 additionally comprises a threaded hole 303 on the upper side 183, which threaded hole 303 serves for screwing in a corresponding tool comprising a screw, thereby providing the removal of the unlocking rod 301 out of the groove 207 axially to the gear rack.
The unlocking rod 301 thus makes two states possible for the bollard drive 101:
If the unlocking rod 301 is inserted into the groove 207 of the gear rack 201, the gear rack is then in engagement with the gearwheel 121, as described. If the unlocking rod 301 is removed, then the gear rack 201 can slide radially to the gearwheel 121 on the guide bearings 131 and 133, along a release direction 391, and thus leads the teeth 203 out of engagement with the gearwheel 121. The gear 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 gear rack 201 is in engagement with the gearwheel 121, the gear rack 201 can be moved along the movement axis 191 in a motorized manner. The gearwheel 121 can alternatively also be blocked axially via a chock or a locking bar, and can also be moved axially, following removal of the chock or the locking bar, in order to disengage the gearwheel 121 from the gear rack 201.
According to an alternative (see
The bollard drive 101 is used within a blocking bollard 501. The blocking bollard 501 comprises a base body 503 that is, for example, firmly concreted into the substrate of a paved carpark and which comprises a base plate 505. The base plate 505 in this case closes the base body 503 with respect to the earth. The base body 503 is designed as a tube and comprises a cover 506 on an upper side, which is installed in the paving, on a level with the carpark. Inside the tubular base body 503, a bollard body 507 is guided in a support ring 511 and a support ring 513 so that the bollard body 507 can be moved out of the substrate in the direction of blocking 581 and into the substrate in the direction of lowering 583, and specifically via the bollard drive 101, along the movement axis 191. The support rings 511 and 513 in this case in particular serve to support the bollard body 507 in the case of a hard approach to the blocking bollard 501, for example, by a motor vehicle. Guide rods (not shown) are also present which guide the bollard body 507, in normal operation, along the movement axis 191, and support it against tilting and/or twisting.
The bollard body 507 is closed at the accessible upper side by a bollard cover 509. Inside the bollard (compare the sectional view of
A protective cover 525 is arranged centrally inside the bollard cover 509, wherein in the example shown in
An alternative unlocking rod 801 has a simple form of a lock 803, wherein the lock 803 is equipped, in the manner of a bayonet closure, with an undercut 805 on both sides of an axis of symmetry (compare
In this case, an emergency key 901 is designed having a shank 903 and corresponding projections 905 in a manner matching the lock 803 so that, for example, after removal of the protective cover 525, the emergency key 901 can be introduced into the bollard cover 509. If the emergency key 901 is then hooked into the undercuts 805, the unlocking rod 801 can then be removed from the gear rack 201 using the emergency key 901 and the blocking bollard 501 can thus undergo emergency unlocking. Analogously thereto, the emergency key 901 can also be used for a rotatable unlocking rod 402 in order, for example, to achieve a rotation of the gear rack of the unlocking rod 402, for unlocking the gear rack 401, using a correspondingly designed lock device in the unlocking rod 402.
Alternatively thereto, the protective cover 525 can also already be designed so that, for example, access is made possible only using the emergency key 901 or using a different type of emergency key or key, wherein in this case in particular the key or a similarly mounted tool allows direct access to the corresponding unlocking rod so that both access to the blocking bollard 501 for emergency unlocking, and at the same time removal of the corresponding unlocking rod or rotation thereof, is made possible without further steps, using the key or unlocking tool.
The present invention is not limited to embodiments described herein; reference should be had to the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2022 102 970.0 | Feb 2022 | DE | national |
This application is a U.S. National Phase application under 35 U.S.C. § 371 of International Application No. PCT/DE2023/200025, filed on Feb. 6, 2023 and which claims benefit to German Patent Application No. 10 2022 102 970.0, filed on Feb. 9, 2022. The International Application was published in German on Aug. 17, 2023 as WO 2023/151766 A1 under PCT Article 21 (2).
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/DE2023/200025 | 2/6/2023 | WO |
