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A platform for research: civil engineering, architecture and urbanism
Screwing machine
The invention relates to a screwing machine (1) for tightening or releasing rail fixing screws (9), comprising a machine frame (5) which can be rolled on a track (3), handles (8) for moving the screwing machine, a motor (7) for applying a torque (16) to a screw head (11), and a device for transmitting a torque. A measuring device (17) is provided opposite the machine frame (5) in order to detect a reaction torque (21) of the motor (7). The motor (7) is actuated in order to limit the torque (16) depending on the reaction torque (21). The reaction torque (21) is used as a reference variable, said reaction torque being applied to the machine frame (5) by the motor (7) and being ascertainable with a high degree of precision by means of a simple measuring device (17). In this manner, a simple and robust design and a precise rotational speed limiting function are implemented.
Screwing machine
The invention relates to a screwing machine (1) for tightening or releasing rail fixing screws (9), comprising a machine frame (5) which can be rolled on a track (3), handles (8) for moving the screwing machine, a motor (7) for applying a torque (16) to a screw head (11), and a device for transmitting a torque. A measuring device (17) is provided opposite the machine frame (5) in order to detect a reaction torque (21) of the motor (7). The motor (7) is actuated in order to limit the torque (16) depending on the reaction torque (21). The reaction torque (21) is used as a reference variable, said reaction torque being applied to the machine frame (5) by the motor (7) and being ascertainable with a high degree of precision by means of a simple measuring device (17). In this manner, a simple and robust design and a precise rotational speed limiting function are implemented.
Screwing machine
WIDLROITHER OTTO (author) / KAMML DIETER (author)
2021-10-21
Patent
Electronic Resource
English
Bolt screwing state judgment method, bolt screwing operation end and screwing system
| European Patent Office | 2022