DE102009007329A1 - Securing device for a lockable manhole cover comprises a removable locking unit having a housing and a bolt with a lock which can be rotated using a screwdriver and a controlled access unit for blocking the closing position of the unit - Google Patents

Abstract

Securing device comprises a removable locking unit (1) having a housing and a bolt with a lock (2) which can be rotated using a screwdriver and a controlled access unit for blocking the closing position of the locking unit. The locking can only be released when release data has been received. Preferred Features: The controlled access unit has an emitting unit, a receiving-evaluating unit and a blocking-releasing unit. The blocking-releasing unit has a sliding pin-like element which protrudes into the moving path of the lock of the locking unit.

Description

The The invention relates to a safety arrangement for a closure or lockable component, in particular for a manhole cover, which is provided with a locking device which is an actuating element contains, by its movement, in particular rotation the Locking device between a locking position and a release position of the component is movable back and forth.

at the manhole cover may be the upper manhole cover, which closes the shaft flush with the environment, or a lower lid, which is below the actual manhole cover arranged to prevent unauthorized access to the shaft, in the z. As electrical or electronic devices or facilities of a different nature, such as unauthorized persons may not have access.

Of the Manhole cover, which is preferably made of concrete or cast iron, preferably has a rotary bolt by turning an associated Actuator a projection of the shaft edge can take hold.

Of the Schachtunterdeckel, which preferably consists of steel, has on his Bottom of a locking device consisting of a linkage may consist of turning an actuator, which is accessible from the top of the lower lid, can be advanced in shots of the shaft edge to the To lock the lower lid. By turning the actuator in the opposite direction becomes the bars of the locking device pulled back in the direction of the actuator, bringing the manhole cover free for its removal from the manhole is.

The Actuator can, for. B. one with the locking device or its linkage be connected rotatable pin, the z. B. can have a hexagon socket, so that the actuator after insertion of a correspondingly shaped Tool can be rotated.

Since such a hex tool or similar tool with which the actuating element is rotatable, can be readily available to an unauthorized person who wishes to gain access to the shaft, the access to the actuating element can according to a suggestion of the older DE 10 2008 021 251.2 be blocked by an insertable lock above the actuating element z. B. can be used in a sleeve-shaped receptacle and must be removed before turning the actuator. In practice, it can not be ruled out that a fitter forgets to work in the shaft to lock the lid or lower lid before he attaches the security lock.

Especially when the shaft is in the area of a carriageway, It can also happen that the locking device in consequence the sudden load of the manhole cover and the associated Vibration automatically moves to the release position, so that even in this case the shaft through the manhole cover or Manhole cover is not secured.

One Another problem is that can not be ruled out is that an unauthorized person in possession of the key the lock inserted enters the access to the actuator locked, and therefore remove the lock and then the actuating element of the locking device in can turn the open position.

Of the The present invention is based on the object of safety a shaft to prevent unauthorized access to the shaft interior.

These The object is achieved by the features of claim 1.

advantageous Embodiments of the invention are in the subclaims characterized.

The The invention provides a safety arrangement which is a removable Has locking device in a housing with a having a bolt provided by a tool as a screwdriver is rotatable and only in the locked position is rotatable to access the actuator of the Locking device to block when the actuator of the manhole cover in the corresponding locking position Location is turned.

The Actuator of the manhole cover can thereby a pin or bolts with a hexagon socket, with the linkage the locking device is connected so that the elements the locking device either in receiving pockets of the shaft edge or manhole frame inserted or retractable from these. It is understood that the actuator also can be rotated by a different tool.

In addition, the invention provides an access authorization checking device which can block the closed position of the locking device and only releases it if it has associated access has received authorization data. The access authorization checking device contains a transmitting unit, a receiving and evaluating unit and a blocking and releasing unit for the blocking device.

The Transmitter carries the opening of the shaft authorized person and is preferably by a chip transponder formed, as for example for the remote control of a motor vehicle lock is widespread. The chip transponder sends its stored Signals to a receiving and evaluation unit, which expediently having an antenna and in a housing under the manhole cover can be arranged. The evaluation unit checks, whether she has received the correct access authorization data and in this case sends a signal to a blocking and release unit, the one vorschiebbares and retractable, for example having pin-like element.

The Blocking and release unit, the pen-like element, for example by means of a solenoid forwards or backwards move or by means of an electric spindle drive. This comes any suitable means.

The Blocking and releasing unit is arranged at such a location, that the pin-like element in the advanced state in the movement path of the bolt of the rotatable bolt of the locking device protrudes. Preferably, the blocking and releasing unit is non-rotatable on one mounted attached housing in which the locking device used is.

If in the fuse arrangement, the actuating element of Locking device of the manhole cover in the locked position is moved and the locking device in the associated housing inserted and locked in, gives the authorized user with its transmitting unit a blocking signal to the receiving and Evaluation unit, in turn, a signal to the blocking and Release unit continues, which then the pen-like element in the trajectory of the bolt of the pivot pin (from the locking in the open position) advances. This can also be pure done mechanically by spring action of the pin. A unauthorized person could not use the bolt of the pivot pin move the locking device in the open position because this through the pin of the blocking and release unit with certainty is prevented. The pin has such a strength that it passes through the bar can neither be demolished nor deformed so that the Trajectory of the free would be.

A on the other hand, the person entitled to access is activated by sending the access authorization data, the blocking and release unit via the receiving and evaluating unit, whereby the pen-like element from the trajectory of the bolt of the pivot pin back is pulled.

In order to is an unauthorized access to the shaft adjacent to safety Probability excluded, with the fuse arrangement without a key lock, whose key is a working person would have to lead with it. Instead, one is rotatable arranged in a housing bolt with attached latch provided, wherein the bolt z. B. a bolt head with a slot or having a polygonal shape, so that the bolt with a associated tool between the locking position is rotatable in the open position.

Further It is suggested that the actuator with which the locking device is actuated by a Housing is surrounded, in which the locking device used is. This housing can be a closed peripheral wall have, and preferably be circular cylindrical shaped, wherein the locking device (in the case of a manhole cover or manhole cover) from above into the housing is inserted.

Further It is proposed that the locking device only in a predetermined Circumference so used in the housing is that they can be locked in the housing. This is achieved by that the housing in which the locking device is used, having an inwardly projecting projection, which is an integrally formed Projection or a fixed cylindrical pin, and that the housing of the locking device is an elongated, in Insertion direction has up to the front edge through recess, into which the projection or pin can enter. The elongated Recess, which can also be referred to as a slot should Be slightly wider than the tab or pin to keep it smooth can occur. The slot runs parallel to the longitudinal axis the locking device.

Further The arrangement should be made such that the elongated Recess or the slot on the inside of the housing the locking device covered by the bolt of the rotatable bolt of the locking device is when the rotary bolt by a screwdriver or the like turned into the locked position.

In addition, it is provided that the slot has such an extent that the pin is at fully inserted into the housing position of the locking device behind (in the case of a manhole cover or manhole cover: over) the rotary latch. Thus, when the rotary latch is closed, it fixes the upper end of the slot arranged projection or pin, so that the locking device can not be removed from the housing, if it has not been previously unlocked.

Especially if the lockable component is a manhole cover, then is advantageously further provided that the actuating element rotatably connected to a component having a recess, in which a pin can enter, which is attached to the locking device is and projects in the direction of insertion of the locking device of this. In the connected to the actuator component it is preferably a flat ring, which differs from the actuating element extends outwards and Appropriately attached to the actuator, preferably welded. The on the case the locking device attached pin or rod-shaped body preferably extends in the axial direction of the locking device.

Further It is suggested that the recess in the with the actuator connected annular element with the pin is aligned when the actuator is in the rotational position, in the locking device is in the locked position located. The pin has a length such that he in the fully inserted state of the locking device protrudes into the recess.

These Training has the consequence that the locking device only then shut off can be when the locking device in the locked position is, otherwise the pin on the with the actuator Connected component impinges, with the result that the case fixed projection or pin is not in the upper end position of the slot above the range of movement of the bolt of the pivot pin located. However, when the locking device in the Locking position is, the bolt of the pivot pin be moved to the closed position, since the pin in the recess of the ring protrudes, and the projection or pin the closing movement of the pivot pin is not blocked. In This condition blocks the engaging in the recess pin In addition, a rotation of the actuating element in the release position, otherwise it could be caused by vibration etc. The recess is so to the cross-sectional shape of the pin adjusted so that it can enter smoothly into the recess, however expediently no significant lateral Game remains. The actuating element is thus non-rotatable held, whereby the locking device substantially fixed immovably.

If the lockable component is a manhole cover covering the manhole Closing flush with the environment, the Arrangement preferably made such that the bolt in its open position in the entry path of the pin lies when the locking device or the pivot pin (with housing and attached latch) is inserted into the housing, wherein the pin on a corresponding point protrudes from the bottom of the locking device. The pin has a length such that it in this case the complete insertion of the locking device in the housing blocked, whereby the locking device is not in the locked position is displaceable. When the latch but in the locked position is pivoted out of the entry path of the pin, so that the pin passes the latch along with the locking device can be used in the end position, in which the bolt in the blocking position is rotatable. The case is over the locking device can be covered by a detachable cap, so that no foreign matter and no water in the housing can enter.

at the fuse arrangement according to the invention is access to the actuating element of the manhole cover, with this lockable, not after locking locked by a releasably inserted lock, locked whose opening is a special, associated key is required, but it is used a locking device, which is similar to a key lock, but the pivot bolt with a suitable tool between a release position of set latch and its blocking position is rotatable. The rotatable held in the housing of the locking device bolt can in this case, for example, have a slot into which a screwdriver can be used, or the bolt, for example, a polygonal Bolt head or a bolt head with a polygonal inner contour have, so the bolt, for example, by an Allen key is rotatable. To limit the rotational movement of the bolt are in formed the housing of the locking device stops.

In order to the locking device is removable to access the actuator of the manhole cover to unlock it is with particular advantage provided that the housing of the locking device provided with an approximately U-shaped bracket, preferably with angled end portions in recesses of the Housing the locking device is inserted and - also preferred - consists of a spring steel. This training has the advantage that the locking device is not forcibly the housing can be torn out, as the bracket when a certain tensile force of the housing is exceeded solves. The bracket is preferably pivotable on the Housing attached so that it is in the unused condition rests against the housing.

It is emphasized that the fuse arrangement according to the invention not just for a manhole cover or manhole cover suitable, but also with other lockable and removable or hinged cover devices such as flaps, covers or doors can be applied.

Further Details will be apparent from the following description of a preferred embodiment and with reference to the drawings. there demonstrate:

1 an example of a locking device mounted below a manhole cover in the open position;

2 the locking device according to 1 in the locking position;

3 and 4 two different views of a releasably inserted in the fuse arrangement locking device, in the unlocked state;

5 and 6 the locking device according to the 3 and 4 in the locked state;

7 a part of the locking device with the locking device in the not yet inserted state;

8th the locking device in the inserted state when the locking device is in the release position of the manhole cover;

9 the locking position of the locking device secured by the locking device;

10 a view of an area of a manhole cover, which closes the shaft flush with its surroundings, with the fuse arrangement according to the invention;

11 the state of the shaft in which the locking device is inserted into the tubular housing of the manhole cover;

12 according to the manhole cover 11 , wherein the rotary latch is in the open position of the shaft;

13 the shaft according to 11 , wherein the rotary latch is in the locking position of the shaft;

14 a representation similar 13 illustrating the locking position of the rotary latch;

15 a representation similar 8th with a blocking and releasing unit of an access authorization checking device in the locked state of the lock of the locking device and

16 a representation similar 15 , but with retracted pin of the blocking and release unit.

In the 1 to 9 the fuse arrangement according to the invention is shown on a manhole cover.

In the 1 and 2 is a locking device 1 shown by turning an inner linkage 2 five bars 3 can be extended so that their ends engage in pockets not shown on the shaft edge or in a manhole frame, or - like 1 shows - be withdrawn from these. It will be appreciated that the invention is also applicable to other interlocking devices in which one or more latches can be advanced or retracted. The illustrated locking device is located at the bottom of a manhole cover 4 ,

The 3 to 6 show a cylindrical locking device 5 in which z. B. by means of a screwdriver 6 a arranged on a rotatably mounted in the housing of the locking device bolt rotary latch 7 from the into the 3 and 4 illustrated open position of the locking device in the in the 5 and 6 shown locking position is rotatable. The locking device 5 has a straight line outgoing from the bottom edge 8th that extends beyond the range of motion of the rotary latch 7 extends beyond.

In addition, stands of the housing of the locking device 5 down a pin 9 which is secured to the housing in a suitable manner. At the top of the case is a U-shaped bracket 21a made of spring steel with angled ends inserted into holes in the housing, so that the bracket is pivotally mounted.

The 7 to 9 show that the inner linkage 2 rotatably with an actuator 10 is connected, which is provided for example with a hexagon socket, in which a corresponding tool is used to the inner linkage 2 to turn and with it the rods 3 extend substantially radially or pull back.

A housing 11 circular cylindrical shape with a bottom 12 surrounds the actuator 10 and is with an inward-protruding pin 13 provided, which is attached to the housing wall. With the actuator 10 is rotatably an outer ring 13a connected, which has a recess 14 has, which is such that the pin 9 in the recess 14 can protrude when the recess 14 with the pin 9 flees. The housing 11 is non-rotatable on the lower lid 4 attached.

In the in 8th shown state in which the locking device 2 . 3 in the release state of the manhole cover 4 is encountered when inserting the locking device 5 in the case 11 the top of the pin 9 on the top of the ring 13a why the pen 13 in the path of movement of the bolt 7 the locking device 5 is located so that the locking device 5 can not be shut off. As a result, a worker knows that the manhole cover has been accidentally not brought into the locked position. After removal of the locking device 5 now becomes the actuator 10 ( 9 ) is rotated into the locking position, whereby the recess 14 in one with the pin 9 aligned position turns, if now the locking device 5 is re-inserted into the housing. The pencil 13 moves up to the top of the slot 8th so the tool 6 the bolt with the bolt 7 can turn into the locked position in which the locking device 5 in the case 11 is attached.

In the 10 to 14 the fuse arrangement according to the invention is shown on a manhole cover, which closes the shaft flush with its surroundings. The manhole cover is preferably made of cast iron, but it can also consist of concrete.

In this embodiment, a cylindrical plug-lock device 5 provided with the locking device 5 of the manhole cover coincides, so this is not to be re-described here. The circular cylindrical housing 11 contains a molded, inward projection 15 which has the same function as the pen 13 the above embodiment.

The actuator 10 , which has the shape of a flattened on one side bolt head is with a bolt 16 connected to the common rotation, which is between an in 12 illustrated opening position of the shaft and one in the 13 and 14 shown locking position is rotatable back and forth, wherein in the latter, locked position of the shaft an inner projection 17a of the manhole frame 18a engages below.

The pin 9 stands at such a point from the bottom of the locking device 5 down before that he is inserting the plug-in locking device 5 in the case 11 on the latch located in the open position 16 impinges, wherein he due to its length complete insertion of the housing of the locking device 5 prevented in the closed position. The pin 9 reaches through a hole 17 in the bottom wall 18 of the housing 11 , where this bottom wall 18 has a central opening, which is the insertion of a tool for rotating the underlying actuator 10 allowed.

When the rotary latch 16 is in the closed position of the shaft, it is out of the entrance path of the pin 9 panned out, leaving the pin 9 at the rotary latch 16 can get past the lower end position.

The pin 9 prevents the rotary latch 16 due to vibrations can automatically move into the open position.

15 schematically shows a blocking and releasing unit 19 that z. B. by means of an electric spindle drive or in an electromagnetic manner a pin 20 extend and retreat. In 15 is the pen 20 extended and protrudes through a side recess 21 coming from the elongated recess 8th goes out, in the trajectory of the bolt 7 the locking device 5 such a thing that the latch 7 not in the release position of the locking device (in 15 to the left) can be turned. In 16 is the pen 20 the blocking and release unit 19 from the trajectory of the bolt 7 withdrawn, who thus - as in 16 shown - can be rotated in the release position of the locking device. The blocking and releasing unit 19 is part of an access authorization checking device, which contains a reception and evaluation unit, not shown in the figures, which is mounted at a suitable location of the manhole cover.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 102008021251 [0006]

Claims (21)

Locking arrangement for a lockable or lockable component, in particular for a manhole cover, which is provided with a locking device containing an actuating element, by the rotation of the locking device between a locking position and a release position of the manhole cover is movable back and forth, characterized by a removable locking device ( 5 ) having a housing and therein a bolt rotatable by a tool such as a screwdriver with a bolt attached thereto, and an access authorization checking device adapted to control the closed position of the locking device ( 5 ) and only release it when it has received associated conditional access data. A safety arrangement according to claim 1, characterized in that the access authorization checking device comprises a transmitting unit, a receiving and evaluating unit and a blocking and releasing unit ( 19 ) having. A fuse arrangement according to claim 2, characterized in that the blocking and release unit ( 19 ) a push-pull and retractable pin-like element ( 20 ) having. Safety arrangement according to claim 3, characterized in that the pin-like element ( 20 ) in the advanced state in the trajectory of the bolt ( 7 ) of the locking device ( 5 ) protrudes. Safety arrangement according to one of claims 1 to 4, characterized in that the actuating element ( 10 ) of a non-rotatably held housing ( 11 ) is surrounded, in which the locking device ( 5 ) can be used. Safety arrangement according to one of claims 1 to 5, characterized in that the locking device ( 5 ) only in a predetermined circumferential position so in the housing ( 11 ) can be used, that the locking device ( 5 ) in the housing ( 11 ) is lockable. Safety arrangement according to claim 6, characterized in that the housing ( 11 ) an inward projection ( 13 ), and that the housing of the locking device ( 5 ) an elongated, in the insertion direction to the front edge continuous recess ( 8th ) into which the projection ( 13 ) can occur. Safety arrangement according to claim 7, characterized in that the elongated recess ( 8th ) on the inside of a bolt ( 7 ) of the locking device ( 5 ) is covered when the bolt ( 7 ) is moved to the locked position. Safety arrangement according to claim 7 or 8, characterized in that the recess ( 8th ) has such an extent that the projection ( 13 ) in the completely in the housing ( 11 ) used position of the locking device ( 5 ) behind or above the bar ( 7 ) is located. Safety arrangement according to one of claims 1 to 9, characterized in that from the recess ( 8th ) at the level of the bolt ( 7 ) a lateral recess ( 21 ) into which the pen-like element ( 20 ) can occur. Safety arrangement according to one of claims 1 to 10, characterized in that on the housing of the locking device ( 5 ) a pin ( 9 ), which in the insertion direction of the locking device ( 5 ) protrudes from this. Safety arrangement according to claim 11, characterized in that the actuating element ( 10 ) rotatably with a component ( 13a ), which has a recess ( 14 ), in which the pin ( 9 ) can occur. Safety arrangement according to claim 11 or 12, characterized in that the recess ( 14 ) with the pin ( 9 ) is aligned when the actuator ( 10 ) is in the position in which the locking device ( 2 . 3 ) is in the locking position. Safety arrangement according to one of claims 11 to 13, characterized in that the pin ( 9 ) has a length such that it is in the fully inserted state of the locking device ( 5 ) in the recess ( 14 ) protrudes. Safety arrangement according to one of the claims 1 to 14, characterized in that the manhole cover a manhole cover is. Safety arrangement according to claim 11, characterized in that one with the actuating element ( 10 ) rotatably connected latch ( 16 ) in the open position in the entry path of the pin ( 9 ) is arranged so that it is the complete insertion of the locking device ( 5 ), while in the closed position, the entry track of the pin ( 9 ) releases. Safety arrangement according to one of the claims 1 to 16, characterized in that the housing with a cap can be covered. Safety arrangement according to one of claims 1 to 17, characterized in that on the housing of the locking device ( 5 ) An approximately U-shaped bracket is attached. Safety arrangement according to Claim 18, characterized that the bracket with angled end portions in recesses the housing of the locking device is inserted. Safety arrangement according to one of the claims 18 or 19, characterized in that the bracket consists of a spring steel. Safety arrangement according to one of the claims 18 to 20, characterized in that the bracket is pivotable attached to the housing.