Patent EP-1883078-A1 (EP)
Inventor: ZIEGELMEYER FRITZ
IPC: F16B7/20
Filed: 2007-07-19
Abstract: The device for handling of small components and/or tools in reactor vessels and in fuel element cooling pond, comprises first rod (12), which has handle- or fixation means for handling of components and/or tools at its first end and which is intended with clutch means at its opposite second end. The clutch means co-operates with a second rod (20), which serves for the extension of the first rod. The rods are formed as hollow rods. The clutch means is inserted into an end of the first rod by a clutch bushing, which is tightly connected with the first rod. The device for handling of small components and/or tools in reactor vessels and in fuel element cooling pond, comprises first rod (12), which has handle- or fixation means for handling of components and/or tools at its first end and which is intended with clutch means at its opposite second end. The clutch means co-operates with a second rod (20), which serves for the extension of the first rod. The rods are formed as hollow rods. The clutch means is inserted into an end of the first rod by a clutch bushing, which is tightly connected with the first rod. The clutch bushing (14) protrudes the first rod in lengthwise and the second rod for the guidance and holding. The clutch bushing in its protruding region of the first rod is provided with a bolting device, which serves the safety device of the connection of the second rod with the first rod. The bolting device at its end pointing towards the rod has a slit shaped recess, which co-operates with a laterally projecting lock bolt arranged at the turned end of the second rod for its reception. The bolting device is formed as sliding sleeve, which is pushed onto the outer surface of the first rod and is axially rotatable by a lock bolt (16). The positive connection is intended between first- and the second rod by the clutch bolt and arranged in the second rod, which intervenes in a bolting device link (18). The second rod reaches at the bolting device link by small longitudinal displacement as well as rotation around its longitudinal axis of the final position in the bolting device link. The bolting device bushing formed as sliding sleeve is adjustable for bolting device to the clutch end and takes up the bolting device bolt in the slit-shaped recess. The bolting device bushing prevents an unlocking of the rod connection and is blocked against twist by a lock bolt intervening in a slotted hole present on their other end. The clutch bushing is strengthened within reception region of the bolting device link and has a larger wall thickness than in the remaining region. The bolting device bushing is provided with a spring. The bolting device link is formed by a curved inner groove in the bushing wall or by a curved slotted hole in the bushing wall. The bolting device bushing is shifted against the spring action from the normally reached bolting device position and slides back automatically into the bolting device position. An axial stub of the front side of the clutch bush runs parallel to a first- and second angle. The bolting device link is implemented angularly with same or different stubs length. The stub parallel axis is longer or same than the transversal stub. The bolting device link is implemented about U-shaped as double angles with equally or different stub length. The first axial stub has the double length like the transverse stub and has a length running parallel to stub axis. The length corresponds 1-2 times of the diameter of the clutch bolt projecting radially at the second rod. The bolting device bushing is provided with a conveying device, which serves to subject the bolting device bushing into its final position and to secure its position. The conveying device is formed a cylindrical coil spring, which supports on the one side in the bolting device bushing and on the other side at the lock bolt.