SU15389A1 - Articulation bucket frame for multi-bucket excavators - Google Patents

Description

Such excavator bucket frames are known, which consist of many articulated parts capable of changing position, each separately, under the action of winches. When one part of the frame is rearranged, the position also changes at the same time as the front parts of the frame, which must thus be re-installed each time. Drawing on a specific profile with such frames requires a considerable amount of time.

In order to eliminate this drawback, in the proposed device, a stand is rigidly attached to each individual link of the bucket frame, at the end of which a lifting cable is fixed or with a roller. All lifting cables are thrown over guide rollers located on the body of the excavator, near the axis of rotation of the bucket frame, and go from one or more auxiliary winches to the corresponding end units m.

FIG. 1 shows a schematic drawing of an excavator with a bucket frame; FIG. 2-link bucket frame; FIG. 3-

an excavator with a multi-link bucket frame; FIG. 4-link bucket frame; FIG. 5- modified excavator.

A bucket frame b (Fig. 1-2) is attached to the excavator a with a hinge c (fig. 1-2), to the front end of which at point e. The link d hingedly attached, carrying the rack / with the end of the cable g fixed on it. The latter is pulled through the roller L, placed at the point with or near it, to the winch /. The bucket, frame b is suspended by a rope k, passed through a block located at the top of the boom /, to the winch n, through which it can be raised and lowered without changing the relative position of the parts f, f, d, as they constitute a rigid unchangeable triangle as long as the cable length g is constant. With such a device, the winch i can remain alone, while the bucket frame with link d is translated, for example, to the position indicated by a dotted line in the drawing (Fig. 1). The rack / can be attached not to the link d, but to the frame 6 (Fig. 2); in this case, the end of the rack / supplies it with a roller -o with a gable cable thrown over it: one end of which is fixed at the point p of the link d, and the other end is wound on the shaft of the winch i (Fig. 1).

Figure 3 depicts essentially the same device, with the only difference being that at the free end of the bucket frame b, three links tf-, d and d, hinged at points e, e and e, are successively located. Corresponding cables g, g and g are led through rollers c located near the point of rotation of the frame to the winches /, / and i.

FIG. 4, the device is changed in that the rack / is only present on the bucket frame b, whereby the rollers are attached to this rack for one of the separate cables g, g and g.

FIG. Figure 5 shows the bucket frame, consisting of three parts b and link d, articulated at the points, e and at which part b is hinged at point C to the excavator a. Separate parts of the bucket frame are suspended on cables k, k- and which are thrown over rollers t located at the boom end /, and wound on the shaft of the winch floor, p and n. The link d at point p is attached. that goes through

mounted on the rack f roller o, and then through the rollers d, g, t to the winch 5, located on the boom / excavator a.

The subject of the patent.

1. A hinged bucket frame for multi-bucket excavators, characterized by the use of rigidly associated with individual links of the bucket frame-racks f (Fig. 1) f, f, f (Fig. 2, 3 and 4), at the ends of which are fixed or with the help of the rollers, the lifting cables going from one or several auxiliary winches, or 0-, i, f (Fig. 1 and 3) to the corresponding end members of the frame frame are directed.

2. Application to the device, described in clause 1, of the guides for lifting cables, rollers c (Figs. 1 and 3) located on the body of the excavator, near the axis of rotation of the bucket frame.

3. The form of the assembly described in claim 1, characterized in that the auxiliary winch s (Fig. 5) is located on the boom / excavator, and the lifting cables are guided along the intermediate links of the frame with the help of rollers g and 9.

to the patent of the company “Lubeck Machine Building Society No. 15389”

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