DE642356C - Detachable connection for the bucket of bucket wheel excavators - Google Patents

Description

The invention relates to a detachable four-linkage for the bucket for bucket wheel excavators fastened to the bucket wheel chute body by means of screws. "
In the case of layers of earth that are heavily interspersed with stones, the bucket of bucket wheels have to be replaced frequently. For this purpose, it has already been proposed to tie the bucket on the bucket wheel chute body with screws instead of rivets. However, these screws are exposed to the rough excavation operation, so that in most cases loosening the screws is associated with difficulties.

It's already at. Bucket chain excavators connect the excavator bucket with the Schake became known when to relieve the connecting screws between Schake and Bucket wedge-shaped storage areas are provided.

The invention consists in that the Excavator bucket, the tail end of which is easily detachably connected to the bucket wheel chute body is, in its front part an attachment body with two angled to each other has standing storage surfaces against which the correspondingly designed storage surfaces an attachment body of the paddle wheel chute body by means of an easily detachable connection be pressed. The releasable connection can be carried out so that the Attachment body of the bucket wheel chute body one parallel to the longitudinal center plane of the latter running bore for receiving and fastening the free ends of a U-shaped Has screw bolt, the bow-shaped part in a also parallel to Longitudinal center plane of the bucket wheel chute body extending recess of the attachment body the bucket is relocated and through a cross through the attachment body the bucket through bolt is held.

Another embodiment is that the bearing surfaces of the attachment body, which are held together by a bolt passing through them, at an acute angle towards each other, i.e. wedge-shaped. The tail end of the bucket is useful can be inserted in a groove-like guide of the paddle wheel chute body.

Compared to the known detachable screw connections of the bucket with the The paddle wheel chute body of paddle wheels has the advantage of the invention. that the grave pressure due to the angular bearing surfaces between the bucket and the bucket wheel chute body is included for the most part, whereby the paddle wheel chute body and the The bolt bolts connecting the bucket are almost completely relieved of the digging pressure will. The bucket still has a firm seat on the bucket wheel chute body, without the easy solvability

of the bucket is impaired as the connecting parts are subject to wear from the excavation operation are protected.

The invention is shown in the drawing, two exemplary embodiments.

Fig. Ι shows in side view and partially ^ a section of a paddle wheel,

Fig. 2 shows a section in the direction of the line ip 2-2 of Fig. I.

Fig. 3 shows a further embodiment of the invention and

Fig. 4 shows a section in the direction 4-4 of Fig.3 and

Fig. 5 shows a section in the direction 5-5 of Fig. 4.

The bucket b are placed on the bucket wheel chute body a, on which chute plates are arranged for the lateral discharge of the dredged material. A hub body is b for attaching the bucket α on Schaufelradschurrenkörper at each bucket forwardly d with bearing surfaces provided, c against the bearing surfaces ¹ and c ² of the Schaufelradschurrenkörper α arranged approach create c, where the tail end of the bucket to δ in a bucket fully or partially comprehensive guide groove α ¹ pushes. The bearing surfaces c ¹ , c ² are arranged at an angle to one another.

To the Ansatzkörperif the bucket b with the extension body c of Schaufelradschurrenkörpersß connect to, is in the extension body d of the bucket ö parallel to the longitudinal center plane of the Schaufelradschurrenkörpers a bore e provided, which takes place in the hub body of the SchaufelradschurDenkörpers a c continued e. ¹ The bore e receives a U-shaped bent tension member /, the arcuate part of which lies around a bolt £ · which is provided with a recess and is held in a through bore of the excavator bucket b. The two ejids of the tension member / are each ^{fastened by a screw / 1} in a recess h of the paddle wheel chute body ß. The bucket b are guided by means of stop plates I on the bucket wheel chute body α in such a way that they are secured against being pushed sideways. Due to its inclined position, the tension member / presses the two attachment bodies c and d with their contact surfaces c ¹ and c ^% together and thus creates a firm seat for the bucket b, which consequently cannot knock loose, although the screw connection /, / ^{1 is} almost entirely is relieved of the forces acting on the buckets δ.

A similar implementation is in the

Fig. 3, 4 and 5 shown. The two attachment surfaces c ¹ and C " here form an acute angle so that a wedge effect is achieved. D. A wedge /, 'is adjusted ^{by the screw / 1 as a connection between the bucket and the air wheel chute body}

The wedge / presses the contact surfaces c ¹ and c ² against each other and thus creates the desired tight fit without the wedge connection being burdened by the digging forces. In both of the embodiments described, a small gap k is provided between the attachment bodies d and c so that the attachment bodies d and c only touch each other on the contact surfaces c ¹ and c ^{2 with certainty.}

Claims (4)

Patent claims: i. Detachable connection for the bucket for bucket wheel excavators attached to the bucket wheel chute body by means of screws, characterized in that the bucket φ), the tail end of which is easily detachably connected to the bucket wheel chute body (a) , has an attachment body (d) in its front part with two angled to one another Has bearing surfaces (c ¹ , c ² ) against which the correspondingly designed bearing surfaces of an attachment body (c) of the paddle wheel chute body (ώ) are pressed by means of an easily detachable connection (/, / '). 2. Detachable connection according to claim 1, characterized in that the extension body (c) of the bucket wheel chute body (λ) has a parallel to the longitudinal center plane of the latter extending bore (^ ¹ ) for receiving 'and fastening the free ends of a U-shaped screw bolt (/) having its bügeiförmiger part is laid in a line extending also parallel to the longitudinal center plane of the Schaufelradschurrenkörpers (a) the recess (e) of the extension body (d) of the bucket (b) and by a transversely passing through extension bodies (d) of the bucket (b) bolt ( g) is held. 3. Detachable connection according to claim 1, characterized in that the bearing surfaces (c ¹ , c ² ) of the extension body (c, d), which are held together by a bolt (i) passing through them, run at an acute angle to one another, that is, wedge-shaped. 4. Detachable connection according to claim I, characterized in that the tail end of the bucket (b ) can be inserted in a groove-like guide (ä ¹ ) of the bucket wheel chute body (a). 1 sheet of drawings