DE7530709U - DEVICE FOR GUIDING BOLT NUTS - Google Patents

Description

KL Ö CKNEH - ;; Ξ RK Ξ, AZTISHGESELLSOHAi ¹ T, ί-f-41 Duisburg 1, Mülheimer Strasse 50

Device for guiding screw nuts

The innovation relates to a device for! 'Clocking screw nuts when they are ^{screwed on and A v} on the urJ. from the bolt thread.

The innovation is based on the task, with limited space above the thread to lead such nuts on the bolt that are motorized because of their weight or for other reasons need to be rotated and lifted off.

This object is achieved according to the invention in that a guide ring on the bolt above the bolt thread is provided, which has a circumferential outwardly directed shoulder at its upper end has, with which it is mounted on the nut with respect to the bolt so that it can be displaced in height.

Further features of the innovation emerge from the subclaims.

In this way, the jamming of the running out threads at the end of the twisting process or prevented at the beginning of the lifting of the nut.

The innovation completely eliminates the reworking (milling off the running out * thread), which is usual in such cases or mostly superfluous.

7R30709 05 02.76

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Aulierde- is what is required to turn the nut Torque is reduced because it prevents canting and the resulting increase in thermal force and v / eil part of the force acting on the nut from the rotary drive by means of a sliding bush is recorded with a more favorable coefficient of friction than with unguided or over the entire length nuts guided in the thread.

In the drawing, an embodiment of the innovation is shown. It doesn't limit itself On the embodiment shown, there are many more modifications within the scope of the innovation possible. The device shown in the drawing is used to guide the screw nut 1 when screwing them on and off on and off the bolt thread 2, this is above the bolt thread 2 provided on the bolt 5 of the guide ring 4, which has the circumferential outwardly directed shoulder 5 at its upper end. With the paragraph 5 is the guide ring 4 on the nut 1 mounted vertically displaceable to the bolt 3 opposite. The sliding ring 4 can be used as a sliding bush be formed, in which an intermediate layer 6 made of a material with a favorable Reibungsbe ^ - worth is provided.

In the illustrated embodiment, an inner thread is above the bolt thread 2 on the bolt 3 Guide bush 7 is arranged, which has the circumferential shoulder 8 at its lower end. This paragraph 8 serves as a lower stop for the sliding on the inner guide bush 7 ^ bearing guide ring 4-,

7530709 05.0276

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The nut 1 is provided in its upper area with the toothing 9 into which the motor-driven Pinion 10 engages. In the groove 11 can be particularly heavy nuts or particularly intervening in areas at risk, such as a facility on nuclear reactors, for example like tongs, to carry and transport the mother.

- Protection claims -

7530709 05.0176

Claims (2)

Protection claims 1. A device for guiding nuts in their screwing and unscrewing on and from the bolt thread, characterized in that above the bolt thread (2) on the bolt (3) a guide ring (4-) is provided which has a at its upper end has circumferential outwardly directed shoulder (5) with which it is mounted on the nut (1) relative to the bolt (3) so that it is vertically displaceable. 2. Device according to claim 1, characterized in that the guide ring (4 ·) is designed as a sliding bush (sliding ring). 3- Device according to claims 1 and 2, characterized in that an inner guide bush (7) is arranged above the bolt thread (2) on the bolt (3), which at its lower end has a circumferential shoulder (8) as a lower stop for has the guide ring (4-) which is slidably mounted on the inner guide bushing (7).