DE7802907U1 - LOCKING DEVICE - Google Patents

Description

CC CCCI

Desire in practice

The innovation relates to a device for locking parts movably connected to one another in different Puncture positions according to the preamble of claim 1.

Such devices are required for a wide variety of applications, e.g. for manhole covers for control, maintenance, measuring, well shafts or Like. That are often opened by the operating personnel to carry out the required work have to. The lids of these manhole covers can usually be folded over with the frame by means of hinges tied together. A complete flipping of the open cover by around 180 ° is possible with a simple hinge design not possible. If the lid is then opened up to the end pivot point of the hinges, the entire load will be a burden Dead weight on the hinges, which can damage them. To avoid this, help one then so that the opened cover are makeshift ajar or supported. In such inadequate However, lids kept in the open position mean an increased risk of accidents for the operating personnel as well as for other people involved or not involved in the event, because it was unintentional Tipping over of the cover into the closed position or beyond the open position leads to serious physical injuries can come. In order to avoid such risks, which are often negligently accepted, the relevant safety regulations required that Open manhole covers against unintentional slamming or complete overturning by suitable means must be secured.

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7802907 05/24/78

Devices are already known which are used to secure open manhole covers. However, these are directly related to the mechanisms of so-called opening aid devices for covers on heavy manhole covers that can be driven over. Relatively light lid from .Manhole covers with one only pushed forward for pedestrian traffic and low traffic loads However, test force usually do not have an additional opening aid device and thus do not no safety devices. Locking devices in the form of rods articulated to one part, think of recesses or holes are arranged that cooperate with support bolts attached to the other part, are generally known from other applications. When using such a locking device, however, it would be necessary that the Closing process, not only is the lid moved a short distance in the opening direction to release the lock, but also the locking rod is lifted off the support bolt. These two motion processes initiated roughly at the same time have to be, but can hardly be managed by a maintenance person without running the risk of injury will. In the case of lids with larger dimensions and corresponding weight, this should be impossible.

The object of the innovation is therefore to find a locking device which is designed such that During the closing process, the locking bar is automatically unlocked by attacking only the cover.

The innovation achieves this object in accordance with the characterizing features of claim 1.

With it it is now possible in an advantageous and accident-proof manner to open the cover of a manhole cover

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ti · «■ · ·

cover to open and close again.

The design of the innovation and alternative solutions are the subject of the distinguishing features of claims 2 to 4. Claim 5 relates to a variant of the preferred embodiment.

Based on the drawings an embodiment, a

en

Variant and alternative solution to the holding and clamping device shows, the innovation is explained in more detail.

They show: FIG. 1 a manhole cover with a vertical section with a side view of the locking device in the locked position.

2 shows the locking device in two further functional positions,

Fig. 5 alternative solutions to the holding and clamping device ,

Fig. 4 a and b: two further alternative solutions to the holding and clamping device

FIG. 5 shows a variant of the preferred exemplary embodiment in a partial side view according to FIG Line V - V in Fig. 6

6 shows a horizontal sectional view of the variant according to FIG.

The shaft cover according to FIG. 1 with a frame 1, a cover 3 pivotable about a hinge axis 2 and a locking device 4 is installed in a shaft (not shown). The locking device consists of a locking rod 5j which is hinged at one end to the cover jj and which has a locking slot

• to 1

J

19. ii β »a»

J 3 I »II» t · ·

J 3 II) Il 111! I ··

in the latching position A engages over a stationary latching bolt 7 and a displaceable latching element 8 is provided at the lower end thereof. The disengaging element 8 is designed as a displaceable sleeve. The displacement range for the disengaging element 8 is limited on both sides of the locking slot 6 by a respective stop 9> 9 'which also acts as a driver. A spring 11 is arranged on the disengaging element 8 as a holding and clamping device Io. To close the cover 3, it is first moved in the opening direction, the locking rod 5 with the locking slot 6 being pulled out of the locking position A by the locking bolt 7. The movement in the opening direction takes place until the disengaging element 8, which is carried along by the stop 9, engages over the locking bolt 7 with the holding and clamping device Io. By positive and non-positive interaction of the holding and clamping device Io with the locking bolt 7, the disengaging element 8 is held in the clamping position B. When the cover 3 is subsequently pivoted in the closing direction, the locking rod 5 pushes through the disengaging element 8 until it hits the stop 9 'in the stripping position C. Here, the locking slot 6 slides at a parallel lateral distance past the locking bolt 7 , which prevents re-engagement. The stop 9 'now acts as a driver, so that the holding and clamping device Io is stripped from the locking bolt 7 and the disengaging element 8 pushes back through the force of its own weight over the locking rod 5 to the stop 9, where it is in the closed position of the lid and is present during the detent position A.

In the figures ^ 4 a and b are several alternative solutions for a stationary arrangement of the holding and clamping device Io shown in the various functional positions. So z. B. according to Fig. 3 the Spring 11 on the frame 1 at such a distance from

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Locking pin 7 can be arranged so that it is in the function \ position B on the rear side 14 of the disengaging element 8; rests and thereby frictionally with this and the;

Locking bolt cooperates. With the appropriate output j

formation of the spring 11 z. B. by a crank 12 and the ί Ausrastelementes 8 with a groove Ij5 into which the |

Spring 11 with the crank 12 in the functional position B y engages, additional positive locking can be achieved. The spring 11 (Figure 4 a) can also close next the locking bolt 7, wherein it is in the functional position B on the front side 15 of the disengaging element 8 is present. When the spring 11 (Figure 4 b) is arranged directly next to the locking bolt 7, the spring can have a have loop-shaped bend 16 in the Position B of an approximately U-shaped extension 17 of the Ausraste lenient it 8 overlaps and so the desired form-fitting and force-fitting connection is achieved.

Figures 5 and 6 show a variant of the preferred one Embodiment according to Figures 1 to 4 b, in which the locking bolt 18 on the locking rod 19 ' is located and in the rest position in a stationary j

Locking slot 2o engages. The stationary locking slot 2o ■ starts from a longitudinal guide 21 for the locking bolt 18. Another guide 22 for the disengaging element 23 runs parallel to the longitudinal guide 21. The longitudinal guide _; 21 with locking slot 2o and the guide 22 are located in a fixed position in a bracket part 24 that is firmly connected to the frame 1 or to the inner wall of the shaft. In the now following closing operation, the training ^moved: latching element 23 in the guide 22 in direction of arrow y shown below, wherein the Rastbclzen 18 held with the spring 24 passed in the longitudinal guide 21 on the ratchet slot 2o and thus the locking is released. The

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Ausrasteleraent 25 is made by means of a return spring into the upper rest position above the snap-in area moved back.

Aarbergen, January 15, 1978 Hl / Bef

7802907 05/24/78

Claims (5)

PASSAVANT - WORKS
MICHELBACH HUT 62o9 Aarbergen 7 Locking device Protection claims Device for locking mutually movably connected parts in different functional positions, in particular for hinged covers of manhole covers, by means of a locking rod which is connected at one end to one of the parts and has at least one latching element or the like that is connected to a counter element on the the other part interacts in the latching position, characterized in that a latching element (8) is provided which can be freely displaced at least over the latching area, and that a holding or clamping device (lo) cooperating with the latching element is arranged in such a way that the locking rod (5 , 19) of the disengaging element as long as it prevents re-engagement / 2 7802907 05/24/78 Position is held until the locking range is exceeded in the reverse direction. 2. Device according to claim 1, wherein the hinged on öinen part detent rod is provided with at least one locking slot which engages in detent position a ortsfestem.Bolzen., Characterized in that the / locking element (8) and displaceable along the stop bar (5) Sleeve or the like. Is assigned to the locking rod (5) on both sides of the locking slot (β) a stop (9, 9 ') which also acts as a driver. 3. Device according to claims 1 and 2, characterized in that a spring (11) is provided as a holding and clamping device (lo) on the disengaging element (8), which cooperates positively with the locking bolt (7). 4. Device according to claims 1 and 2, characterized in that a fixed spring (11) is arranged as the holding and clamping device (lo), which is designed such that it with the disengaging element (8) and / or with the locking bolt (7) cooperates positively and / or non-positively. 5. The device according to claim 1, wherein the locking rod is provided with a locking pin which engages in the locking position in a fixed locking slot, characterized in that the locking pin (18) has a longitudinal guide (21) from which the locking slot (2o) goes off that the disengaging element (23) has a guide (22) running parallel to the longitudinal guide of the locking bolt (18), and that the disengaging element (23) is provided with a return spring (26) in the upper rest position above the engagement area. Aarbergen, January 13, 1978
Pat. Hl / Bef 7302907 05/24/78