Gripping tool for a device for the remote-controlled removal of samples from a container, in particular from a pressure vessel of a reactor

• US 4,886,635 A
• Filed: 07/07/1988
• Issued: 12/12/1989
• Est. Priority Date: 07/09/1987
• Status: Expired due to Fees

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Selinger, Johann, Forster, Josef
• Primary Examiner(s): WASIL, DANIEL D
• Application Number:
  US07/216,137
• Time in Patent Office: 523 Days
• Field of Search: 376/261, 376/271, 376/268, 376/262, 294/906, 294/86.29, 294/86.3, 294/86.33, 294/116
• US Class Current: 376/268
• CPC Class Codes: G21C 17/00 Monitoring; Testing measuring in general G01; Maintaining
• CPC Class Codes: G21C 19/10 Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements manipulators B25J
• CPC Class Codes: Y02E 30/30 Nuclear fission reactors
• CPC Class Codes: Y10S 294/906 Atomic fuel handler

Abstract

A gripping tool for a device for the remote-controlled removal of samples in housings with heads from a container includes a mast having a first coupling part. A second coupling part is opposite and associated with the first coupling part. A guide bar elastically bears on the second coupling part in a telescoping manner with pivots disposed on the guide bar. At least two catches of a two-armed lever are disposed on the pivots and have guide grooves formed therein. A bushing surrounding the guide bar has guide pins each engaging a respective one of the guide grooves. At least one remotely controlled linear drive moves the bushing in the direction of the longitudinal axis of the bushing for surrounding the head of the sample housing with the catches like tongs.

Claims

1. Gripping tool for a device for the remote-controlled removal of samples in housings with heads from a container, comprising a rigid mast having a first coupling part, a second coupling part opposite and associated with said first coupling part, a guide bar elastically bearing on said second coupling part in a telescoping manner, pivots disposed on said guide bar, at least two catches of a two-armed lever being disposed on said pivots and having a guide grooves formed therein, a bushing surrounding said guide bar having guide pins each engaging a respective one of said guide grooves, and at least one remotely controlled linear pressure medium drive moving said bushing in the direction of the longitudinal axis of said bushing for surrounding the head of the sample housing with said catches like tongs, said at least one drive including at least one cylinder disposed on said guide bar having a piston with a piston rod connected to said bushing.

2. Gripping tool according to claim 1, wherein said first coupling part is an existing element provided for pulling fuel assemblies, and said second coupling part is adapted to and connected with said first coupling part.