In the process of exploitation of the deep (submersible) pumps often break. To catch them on the outside of the flange for lifting from the well is impossible due to the tight fit of the latter to the well casing. To catch the open borehole pump in the well and pull it out for repair will help homemade trap-hook, mounted on a segment of the rod is square tube. From the version published in the journal “modelist-Konstruktor” No. 2’98, and other analogues of this fixture is distinguished, above all, reliability of operation and ease of use.
Among the undoubted merits of the proposed trap-hook is the fact that the machining operations in its manufacture is not required. Welding is also minimized, fixing a few details slight “dragging”, which may be implemented by any “svarochnik”, including homemade, made by one of the publications magazine “modelist-Konstruktor” (see for example, № 1’90, 8’92, 11 ’92, 9’94, 2’95, 1’96, 3’96, 5’97, 8’97, 4’98, 2’99, 6’99, 11’99, 1’2000, 9’2000).
Size (excluding inter-axle 80 and 200 mm) did not cite, as they are determined by the inner diameter of casing pipes, submersible pump design and materials that are available from the manufacturer of such devices. However, I think it appropriate to emphasize that the strip foundations are made of carbon steel of grade St3 and after the bolt from binding on the rod-tube of square cross section are rigidly connected by welding together with limiters, pin and cut washers.
In the process of exploitation of the deep (submersible) pumps often break. To catch them on the outside of the flange for lifting from the well is impossible due to the tight fit of the latter to the well casing. To catch the open borehole pump in the well and pull it out for repair will help homemade trap-hook, mounted on a segment of the rod is square tube. From the version published in the journal “modelist-Konstruktor” No. 2’98, and other analogues of this fixture is distinguished, above all, reliability of operation and ease of use.