| 摘要 |
An apparatus for setting the suspension means of deep well pump installations during operation, which comprises a pumping rod. Two clamping means, including an upper clamping means and a lower clamping means, are operable on the polishing rod during the pumping operation. A suspension rail is operatively connected with the pumping rod, and a hydraulic cylinder with a piston reciprocates therein and is insertable between the upper clamping means and the suspension rail. A receiver container is adapted to feed a liquid medium under low pressure sufficient for lifting of the unloaded pistons and returns the liquid medium from the cylinder caused by the pressure originating from the suspension load by control with a throttle valve.
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