DE8600556U1 - Slide key - Google Patents

Description

"Slider key ^H

The invention relates to a slide key » especially for underground gate valves in water and gas pipe networks, such slide wrenches are required when parts of a water pipe network or gas pipe network are used for control purposes or for other purposes Want to lock up reasons. The gate valves are usually underground in the course of the respective pipeline arranged and accessible through removable cover.

In the aforementioned control activities, the usual carried out at night, usually between 20 and 60 sliders are required in the course of a night be operated. Because of the considerable weight of such slide keys, the operator has but also because of the torques to be applied in each case, to do considerable work.

To make this work easier, the slide keys were made already provided with electric drives. However, the conventional slide keys Only use with an electric motor if a power grid is available nearby.

As a result, mobility suffers considerably and most sliders can still only be operated by hand be opened or closed.

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The invention is based on the object of eliminating this disadvantage.

The object is achieved according to the invention in that the electric drive motor is a DC motor with an integrated reduction gear is placed on the middle part of the slide key carrying the handles and for TcT I T Π dlcScii clfiycSctzt T 3 t »

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The use of a DC motor provides even see the advantage of mobility, since either the battery of the vehicle used in the tour, or a special battery that is carried by this ° can use. On the other hand, the direction of rotation of a DC motor can be switched over in a simple manner and the key can thus easily be switched from "open" to "close".

A direct current motor with a bypass characteristic is preferably used as the direct current motor. This has the advantage that the speed remains constant, practically independent of the torque output, so that the motor cannot go through ^{ν · '2 ^ when the key is removed.}

To protect the operator from suddenly occurring overload moments, which can then be achieved by holding the Handles need to be caught between the gear motor and the output shaft to protect Slipping clutch switched on. The slip clutch will set to the maximum torque desired in each case and only speaks when this is exceeded Torque.

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In addition, an electrical one is expedient

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γ overcurrent protection is used, the ⁴ prevents overload of the battery. To protect against deep discharge of the battery, an additional electrical protection device is installed, which emits a signal if the voltage falls below a certain lower limit.

All reading instruments and controls are Can be lit appropriately, which makes it much easier to use the slide key at night.

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It is also provided that the engine by a

and can be switched on via Bowden cable from the handle S () disengageable clutch disconnected from the output shaft or can be coupled to it again.

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Finally, the slide key according to the invention contains there is also a ratchet built in between the electric motor and the output shaft with a switchable Blocking direction. This ratchet can be used, as is the case with

the hand-operated slide wrench was common, the 2U

Turning the slide in successive times Partial angles are divided. Switching can also be done from the handle.

A counter for the number of revolutions that can be reset to zero is preferably in one handle built into the output shaft. From this number of revolutions you can then deduce the position of the slide.

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Finally, it is proposed to use the output shaft

To use a joint piece, the certain unavoidable angle of attack between the slide key and the shaft of the slide balances.

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The invention is explained in more detail below in an exemplary embodiment with reference to the drawing. Included

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Fig. 1

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a side view of the Schi eberschl Us ** sels, inserted into a slide shown in section *;

Fig. 2 is a partially sectioned representation of the slide key on a larger scale Scale and

Fig. 3 is a plan view of the slide key

As can be seen from FIG. 1, there is an unspecified pipeline in the ground which a slide 16 is installed. A drive shaft protrudes upward from this slide into one also unspecified box with lid. In Fig. 1, the cover is removed and not shown.

The lower end, which is provided with a corresponding coupling piece, is on this shaft of the slide the drive shaft 6 of the slide key is attached, in which a joint 7 is located.

The electric motor of the slide key is powered by a Cable powered by a battery 15.

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The electric motor 1, which is placed on the middle piece of the slide key, closes a gear 12 on the underside. In one of the handle extending from the center piece 5 is a signal lamp 2 to display a deep discharge of the battery and another display 3 to display the function the ratchet used. On the side of this handle is a push button 4 for setting the

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Clockwise or counterclockwise rotation of the motor.

In the other handle, also visible from above, a counter 8 is used with which the executed rotations can be controlled. Above all, you can tell whether the slide has been fully or partially operated.

At the end of this handle, attached to a corresponding retaining ring 9, there is a hand lever 10 to operate the Bowden cables for disengaging the clutch and switching the ratchet.

Finally, as can be seen from FIG. 2, further electrical ones are located inside this handle Components, such as contactors and a Overcurrent protection 11.

Below the gear 12 is located in the middle part a slip clutch 13 and a reversible ratchet 14.

Claims (1)

• ■ r * Dipl.-Ing. W. ÖahÖee ^: .. ^: .j.
Dipl.-Ing. H.-J. Lippert Patent attorneys, "", · " _lr . Frankenforster Strasse 137 ⁹ January 1986 D / Sw 5060 Bergisch Gladbach 1 5 Bodo Weber 5272 Wipperfürth ! 10 claims j C) 1. Slide key, especially for underground I see gate valves in water and gas pipe networks that I J5 two laterally protruding from a central part I has handles and an electric I contains the drive motor, thereby denotes that is used as a drive motor, a DC motor (1) with an integrated lower ₂₀ reduction gear (12) of the carrying handles middle part of the j I slider key and partly in I used this one. \ jx "r, Z. Slider key according to claim 1, d a- characterized in that a direct current motor with shunt characteristic is used. _oo 3. Slide key according to claim 1 and 2, characterized by a slip clutch (13) or ratchet clutch between the electric motor and the output shaft (6). __ 4. Slide key according to claim 1 to 3, g e- 35 characterized by a Bowden cable from a hand lever (10) on one of the two ), 1 111 ■ · · fl · «· '· Handles controllable clutch for disconnecting and ( connecting the electric motor to the output shaft le. 5. Slide wrench according to claim 1 to 4, g marked by a built-in between the electric motor and the output shaft Ratchet (14), the locking direction of which can be switched, the switching preferably via jo "Bowden cables are carried out from the handle (9). 6. Slide key according to claim 1 to 5, ge •) indicates d u r c h one in one Handle built-in counter (8) that can be set on gauze to display the revolutions of the drive shaft. 7. slide key according to claim 1 to 6, g ekennze leans through a joint piece (7) built into the output shaft. 25th 30th 85 I M I> St. il I I * Il '*, I ι it till ItI 'I I