DE2237035A1 - DEVICE FOR INDEPENDENT HEIGHT ADJUSTMENT OF THE STONE COLLECTING ROLLER OF A STONE COLLECTING MACHINE - Google Patents

Description

Device for automatic height adjustment of the stone collecting roller a stone picking machine.

This is a stone collecting machine, its stone amine roller (1) Hangs in a frame (3) carried by two wheels (2), each of which is connected by one on the right and left side of the lift cylinder (4) via the swivel arm (5) can be raised or lowered. The rock collecting roller is 1.80 m wide and turns with about 130 - 150 revolutions / min. around their own axis against the direction of travel and is pulled forward across the width of the direction of travel.

The stone collecting whale takes the stones in the field a depth of 0 - 3 cm, flings it upwards onto a vibrating sieve (6) the loose earth is sieved off and falls back to the ground. From this vibrating sieve the stones move on a conveyor belt attached to the side, which carries the stones loaded onto the car driving alongside.

If the stone collecting roller runs too high, the stones stay there, runs if she is too deep, she pushes the stones in front of her, - overstress occurs the machine and this can lead to breakage. That's why a helmsman is on the Machine necessary, which can operate the two lifting cylinders via 2 control valves, which keep the rock collecting roller at the desired depth while working. Always there Uneven floors occur and the wheels of the machine depending on the nature of the ground sink in to different degrees, constant manual adjustment is necessary.

Writik at the state of the art: The disadvantage of the machine is that that a helmsman is needed. This man is very on the seat of the machine exposed to strong vibrations. Because the machine only works in dry weather and dry soil, because otherwise the soil cannot be sieved and If the machine is smeared, an extremely high level of dust is the result So the helmsman is also prepared to deal with the violent vibrations in the presence of heavy dust which is unreasonable for him. He can also with the strong star development only Do inadequate tax work.

Auffiabe: The invention is based on the task of the helmsman to save and do a better, more accurate job thanks to an automatic adjustment device to ensure.

Solution: This task is solved in that for the control of the lifting cylinder a known control device is used in the case of both At the ends of the centrifugal shaft, a sensor (7) that scans the unevenness of the floor Falling below the lower floor distance or when exceeding the upper floor distance In each case one adjustable switch (8, 9) is actuated, which is activated by the driver of the Tractor arranged, also manually operable control member on the lifting cylinder acts and causes the height adjustment of the axis of the stone collecting roller. To the To prevent overshooting, a 1) damping device is provided which consists of one between the inlet to the electrohydraulic control block and the return to the oil tank attached, adjustable pressure relief valve that regulates the oil pressure in the inlet to the oil-hydraulic control block does not allow it to rise above the set value. Because I nailed the machine through the stone conveyor belt on the left is heavily loaded on one side, she sagged on this side during the test work sharply and immediately went up again quickly and continuously, so that soon damage occurred on the blood pump. Through the built-in pressure relief valve that is so set is that the machine just barely rises on the heavy left side, this is it The continuous oscillation process has completely disappeared and the machine works calm without jumping.

Achievable advantages: saving of the helmsman and better work, especially when it is very dry.

Claims (1)

Device for automatic height adjustment of the stone a rock collecting machine. P a t e n t a n s p r u c h: Device for automatic height adjustment the stone collecting roller of a stone collecting machine, consisting of a hydraulic system and 2 Rubzylindern which are hinged to the swivel arms, characterized in that for the actuation of the lifting cylinder (4) already known from other machines Re-Beleinrichtung, which is used on two, the ground-scanning coolers (7), which are arranged laterally near the two ends of the centrifugal shaft, and the adjustable electrical switches (8,9) that control the associated solenoid valves press exists.