Demag Cranes & Components Gmbh

Mannesmann Aktiengesellschaft

Jürgen Heun

Holger Freitag

Rüdiger Ostholt

Erik Appel

Udo Gersemsky

Giuliano Persico

Wolfgang Krebs

Oliver Moll

Anton Munzebrock

Anton Münzebrock

Ralf Eising

Burkhard Hasenack

Thilo Walloschek

Michael Röhr

Torsten Sattler

Jörg Lindemaier

Hansjürgen Linde

Anton Muller

Oliver Ullrich

Klaus Wissing

The invention relates to a suspended control device () which is suspended by means of a control line () connected to a unit to be controlled (). Said suspended control device is especially a control switch or a suspended push-button switch for controlling hoisting equipment, the control line () comprising electrical lines () for transmitting control signals, and a traction relief element () which is supported at the top, on the unit (), and used to absorb weight and tractive forces. The aim of the invention is to provide a suspended control device () whereby the length of the control line () can be easily changed. To this end, a storage element for receiving and releasing a defined length of the electrical lines () is provided behind the region wherein the traction relief element () is supported, seen in the direction of the unit () from the suspended control device ().

Suspended control device

A chain block with a drive motor () and with a transmission (), connected to the drive motor () at the take-off side, with a transmission output shaft (), on which a chain wheel () is rigidly arranged for pulling a chain. In order to create a compact chain block, the chain wheel () faces the drive motor () at its take-off end face () and the outer circumference of the chain wheel () reaches into the imaginary extension of the outer contour of the drive motor ().

Chain block

An electric hoist with motor-speed-regulated lifting speed, in particular an electric chain hoist, including an electric motor, a gear unit, and a wheel around which the hoisting chain is looped. A load-carrying device is arranged on the hoisting chain. The motor, gear unit and wheel are connected with one another in a drive connection and the lifting speed is provided by an electric control unit for the electric motor, which control unit is connected to a manual control switch. In order to achieve suitable cooling while apportioning the space in an appropriate manner for the arrangement of all required components, the electric control unit, which has control electronics with speed sensing equipment, is arranged in an external protective housing fitted to the gear box.

Electric hoist with speed control, a protective housing and a swivelable

Growing community of inventors

Dortmund, Germany

Jürgen Heun