DE964901C - Single-rope gripper, especially for agricultural conveyor systems - Google Patents

Description

E 7014XII35b ISSUED MAY 29, 1957

LIBRARY

OF THE GERMAN

PATENT OFFICE

Josef Eckart, Landshut

has been named as the inventor

Josef Eckart, Landshut

Conveyor systems

The invention relates to a Einsail gripper,

in particular! for agricultural conveyor systems.

The training of single-rope grippers is

so far in such a way that their gredfar arms by means of an upper and lower abutment attached toggle lever closed by pulling on the SeM and be opened by releasing it. The operation of such known grippers is In need of improvement in that it is not deep

ίο sink enough into the good to be grasped and yourself also rearing up during the closing of the gripper arms it can happen that they partially close when they are dropped and, as a result, do not can be fully exploited.

According to the invention, the evils are in a single-rope gripper tongs, the gripper arms of which were linked to an upper and lower abutment The toggle lever can be closed by pulling the rope and opened by releasing the same, thereby eliminates the fact that the lower abutment for the lower, toggle lever arms designed as an overweight is, in which a detent washer for the gripper in the open position holding, on the lower Is mounted toggle arms, seated pawls. as

Another feature of the invention is dkrin, that in the lower abutment one is connected to the locking disk © and this when the open pliers is guided on the material to be conveyed out of engagement of the pawl-bringing cleat.

709 524/267

An embodiment of the invention is shown in the drawing, namely in

Fig. Ι the closed gripper © with trolley and

Fig. 2 the opened gripper with trolley, each in section.

The grippers consist of pairs of toggle levers arranged vertically and in rows next to one another i, 2, which trained on an upper abutment 3 and on one as overweight lower abutments are hinged. The gripper arms 5 are rigidly connected to the toggle arms 2, each of which also has a pawl 6.

In the lower abutment 4, a bolt is vertically displaceable out, at the lower end of a cleat 7 is seated, while at the upper end a Detent washer 8 is attached.

The lower abutment 4 serves as a support for a plate 10 attached by means of screw bolts 9, on which a hook 11 is attached. Instead of the hook 11, several roles can be used Can be used like a pulley block.

On the upper abutment 3 there is a holder 13 for a centrally drilled unlocking head 14 articulated therein. The pulling cable 16 of a motor winch running through the unlocking head 14 is attached to the hook 11.

The gripper is suspended from the pull rope 16 by means of a pulley 18 on a trolley 19, which runs in the usual way on rollers 20 on a trolley bridge 21. In deir movement ^ - track of the unlocking head 14 branches on the trolley 19, a pierced stop 22 is mounted so that it can be moved vertically, which is supported by a fork arm 23 is articulated with an eccentrically mounted locking balance beam 24. About the same as this Locking balance beams 24 are at regular intervals cams 25 on the underside of the trolley bridge 21 welded on.

In the trolley 19 is a below the unlocking head 14 engaging catch hook 26 pivotally mounted. One rigid with the catch hook. 26 connected dener arm 27 branches off from this at an angle to the outside (Fig. 2), where it is one in one to the Trolley 19 attached sliding guide 28 held pressure piece 29 is upstream. One at the Trolley 19 attached spring 30 holds the catch hook 26 in the vertical position. The operation of the gripper pliers according to the invention is now as follows.

Fig. 2 shows the moment in which the opened gripper tongs due to its weight, sinks until the cleat 7 hits the manure, lifting the detent disc 8 and the pawls 6 thus releases. Now the motor winch is switched on, which with the pull rope 16 the lower Lifts abutment 4. This sets the toggle mechanism of the pliers in motion, the gripper arms 5, which are arranged next to each other like a basket, dig into the manure and cling to it between them during the closing movement. located good. If the gripper is then closed, so it is pulled up by the continuous pulling movement of the winch cable 16 .. The Trolley 19 is by the. locking balance beam braced against the cam 25. 24 in locked in their position. The gripper tongs are pulled up until the one at the top Abutment 3 articulated pierced unlocking head 14, passed through, the rope 16, hits the stop 22 and pushes it upwards (Fig. 1). This will make the locking balance beam 24 placed horizontally and thus brought out of engagement with the cam 25. The motor winch however, continues to work uninterruptedly, so that immediately after the locking balance beam 24 the trolley 19 with the gripper attached to it begins to move in the direction of the arrow. Thus, the catch hook 26 can now, through the spring 30 pulled, return to the vertical position with his claw under the unlocking head 14 sets. The gripper is now hanging with both the catch hook26 and the Pull rope 16 on the trolley 19, which opens on the trolley bridge 21 1.

If the motor winch is now set to idle, the tensile force in the rope 16 is absent. The gripper now hangs solely on the catch hook 26. The lower abutment 4, designed as an overweight However, if the cable is not pulled, it sinks down and opens via the toggle mechanism the grapple arms 5 so that the manure can freely fall down onto the wagon. A slide can can be used to help.

The pawls 6 are locked in the detent disk 8, so that the gripper pliers their Maintains the open position with certainty.

The gripper tongs are released when the trolley 19 with the open gripper tongs hanging on it moves in the direction of the arrow (Fig. 2) until the pressure piece 29 upstream of the arm 27 of the catch hook 26 hits the control cam 35 ¹ . As a result, the catch hook 26 is pivoted out of its vertical position, the unlocking head 14 is free, and the open gripper pliers sinks back down because the motor winch runs empty. At the same time, however, the stop 22 also falls so far down in its guide that the locking balance beam 24 rests against the cam 25 attached to the underside of the trolley bridge 21. The trolley 19 is thus locked again in its position. Now after hitting the gripper on the manure, the motor winch is switched on and the described process is repeated.

By appropriate training of the attached to the gripper tongs according to the invention Arms, e.g. B. in the form of a container, but can not only agricultural goods, but also others, such as B. sand or coal, are transported.

Also for digging wells, e.g. B. for wells, the grippers can be advantageous provided with shovel-like gripper arms, find use. You can also contact the the usual tripod racks. Of the

The catch hook reaching under the locking head is expediently by mechanical! Middle, such as cable pull or linkage, loosened by hand to drop the lifted gripper. the However, gripper pliers themselves correspond completely to the design according to the invention.

Claims (2)

PATENT CLAIMS: i. Single-rope gripper tongs, in particular for agricultural conveyor systems, their gripper arms by means of a toggle joint articulated to an upper and lower abutment by pulling closed on the rope and opened by releasing it, characterized in that that the lower abutment (4) for the lower toggle lever arms (2) is designed as an overweight is, in which a Rasfenische disc (8) for the gripper in the open position holding on the lower toggle arms (2) seated pawls (6) is mounted. 2. Gripper pliers according to claim 1, characterized in that in the lower abutment (4) a with the detent disc (8) connected and this when striking the open pliers on the material to be conveyed out of engagement of the pawls (6) bringing impact plate (γ) is guided. Considered publications:
German Patent Nos. 832 196, 691 742, 633603, 546297; British Patent No. 621 109. 1 sheet of drawings © 609 TSlIVSS 12.56 (709 524/267 5. 57)