FR2764167A1 - Hook inverter for driving scraper - Google Patents

Abstract

The inversion system comprises a hook (6) with points (3,4) at each end and in the central part grooves (9,10,11,12,13). There are two tipping studs (8,14) and a reversal stop (2) fixed on a rail (1). The studs fixed on the hook serve as the tipping axis. When the scraper with its shoe (7) reaches the end of its travel, the hook points are placed under the stop in the direction of advance. The rail continues its return movement and the points are caught under the stop which enables the hook to free itself from the spindle (5) which fixed it to the shoe. The hook can be detached from the rail to enable reversal of the shoe under difficult environmental conditions.

Description

The invention relates to a hook reversal system which is used in the drive of a liquid or straw manure scraper.

On the different models concerned, the hook reversal means uses a hole system in the scraper drive rail. In difficult operating conditions (for example, very strawy manure, very hot and very dry weather), the hole systems work very badly because the holes become blocked.

The present invention proposes to remedy its drawbacks and to do so: its subject is a hook with a very elongated and very pointed front part and a rear part. The front and rear parts are called POINTS.

When the hook is inverted, the hook tip locks onto the stop fixed on the rail allowing it to separate from the rail and reverse the direction of advancement of the shoe.

An embodiment of the invention is now described on the basis of examples and not limiting with reference to the annexed drawings in which the diagrams 1-2-3-4 are the explanatory views of the operation.

Figure 5 is a longitudinal sectional view of the hook.

Figure 6 is a perspective view of the stop fixed on the rail.

VIEW 1.

The rail controlled by a mechanical element moves from left to right. By moving the stop (2) is placed above the points (3) of the hook (6).

VIEW 2:
The rail (I) continues to move from left to right. The points (3) are taken under the stop (2), which allows the hook (6) to be released from the axis (5) which is integral with the shoe (7). The stud (8) fixed on the hook (6) serves as an axis point for tilting.

VIEW 3:
The rail (1) always continues to move from left to right. The hook (6) continues to tilt. Slides in the groove (9). The axis (5) is received in the groove (12) of the hook (6).

VIEW 4:
The rail (1) has finished going from left to right and is left from right to left which allows the points (3) of the hook (6) to disengage from the stop (2) fixed on the rail (1). The hook (6) completely completes its tilting and comes to rest on the rail (1) by means of the stud (14).

FIG. 5 represents a view in longitudinal section of the hook. The hook consists of two points (3) and (4), two pins (8) and (14), a groove (9) and four notches (10) - (1 1) - (12) - (13).

Figure 6 shows a perspective view of the rail (1) with its stop (2).

Claims (1)

CLAIM O A hook reversal system used in driving a slurry scraper by a reciprocating rail, for reversing the direction of movement of the scraper, which is characterized by  * a hook (6) with spikes (3) - (4) at each end, in the central part a groove (9) comprising notches (10 to 13), in which the axis (5) integral with the shoe slides (7) of the scraper and two tilting pins (8) - (14).  * a stop (2) fixed on a rail (1) the assembly being arranged in such a way that when the scraper with its shoe (7) arrives at the end of travel, the points (3) or (4) of the hook (6 ) are placed under the stop (2) according to the direction of advance, the rail continuing its return movement, the pins (3) or (4) are taken under the stop (2) which allows the hook (6) to release the axis (5) which made it integral with the shoe (7), the pins (8) fixed on the hook (6) serving as an axis point for the tilting of the hook (6) the hook (6) slides on the axis (5) through the groove (9), then the axis (5) is housed in the notch (12) when the rail has finished its movement, its direction of movement is reversed, which allows the points (3) or (4) to be released from the stop (2) the hook (6) ends its tilting and rests on the rail by means of the pins (14).