SU810899A1 - Working equipment of earth-moving machine - Google Patents

Description

one

The invention relates to earthmoving machinery, in particular, to working equipment of an excavator having a means for loosening an array under development, for example, a road surface.

The working equipment of the earthmoving machine is known, which includes a handle mounted on it with a forging and ripper 1.

The disadvantage of this equipment is that the reverser of the ripper is idle, and, in addition, considerable effort is required when developing a hard cleaved coating, due to its destruction along the entire cleavage line.

Closest to the invention, the known solution is the working equipment of the earthmoving machine, including an arrow, a bucket and a ripper, hinged to the handles with a hydraulic jack, and the ripper has cutting edges located on opposite sides of its hinge axis, bucket and ripper arms 2.

A disadvantage of this device is that it does not allow the pavement or hard rock to be destroyed by the back tooth. When breaking, for example, a road surface with a front ripper tooth with a bucket stop into the rock, controlled rock chips are produced according to the size of the road surface destruction. As a result, that part of the coating that is not subject to destruction can be destroyed. At the same time there is a significant resistance to destruction of the developed array.

The purpose of the present invention is to reduce the efforts to destroy the coating and to provide both simultaneous with the destruction and consistent loading.

This goal is achieved by the fact that in the working equipment of an earthmoving machine, including an arrow, a bucket and a ripper, hinged on a handle with a hydraulic jack, a hinge fixing ripper is located between the hinge fixing a bucket to the handle and a hinge fixing a handle with a hydraulic jack, their distance is taken from the termination:

to +

where RP is the turning radius of the cutting edge

ripper, - the radius of rotation of the cutting edge

bucket,

a is the distance between the pivot points of the bucket attachment and the ripper.

In addition, the ripper is attached to the handle by means of a bracket rigidly connected to it.

FIG. 1 shows a general view of the working equipment of the earthmoving machine used in loading operations; in fig. 2 - working equipment for breaking the road surface.

The working equipment of the earthmoving machine includes a handle 3 mounted on the boom 1 by means of a hinge 2, on which a bucket 5 is mounted by means of a hinge 4 and a ripper 7 with front and rear edges 8 and 9 is mounted by a hinge 6 3 with the aid of a bracket 10 and is driven by a power cylinder 11.

The bucket 5 is controlled by the power cylinder 12, the handle 3 is controlled by the power cylinder 13, and by the boom 1 by the power cylinder 14.

The distance a between the axis of the hinge 4 of the bucket attachment 5 and the axis of the hinge 6 of the attachment of the ripper 7 eliminates the intersection of circular arcs that describe the cutting edge 8 of the bucket and the cutting edge 9 of the ripper. This condition corresponds to the expression:

R.R ,,,

where Rf, is the turning radius of the cutting edge

ripper, K - radius of rotation of the cutting edge

bucket,

a is the distance between the pivot points of the bucket attachment and the ripper.

The center of the hinge 6 is in the zone of action of the cutting edge 15 of the bucket. The device works as follows. In the process of destroying a hard coating, for example, a road coating, the cutting edge 15 of the bucket 5 is driven by the cylinder 12 to the side of the hinge 6 of the ripper 7 and abuts against the crushable bottom array, as shown in FIG. 2. Then, the cultivator 7 is driven by an actuator C, which, with its rear cutting edge 9, abuts against the crumbling massif from above.

Upon further movement of the ripper and the bucket towards each other, the coating is destroyed due to bending deformation, since a shoulder of action forms between the cutting edges of the ripper and the bucket.

cutting force, creating a bending moment.

After the destruction, cutting or chipping off of a piece of array, the edge 15 of the bucket and

ripper edge 9 moves respectively along radii RK and R, going to the point of mutual intersection of circular arcs, which they describe, which allows you to securely capture oversized pieces and load them onto the vehicle.

Thus, the creation of bending loads on a destructible array reduces the resistance to its destruction, which has a positive effect on productivity.

equipment.

Claims (3)

1. The working equipment of the earthmoving machine, including the boom, bucket and ripper, hinged on the handle with a hydraulic jack of rotation, characterized in that, in order to reduce the efforts to destroy the coating and to provide simultaneous with the destruction and sequential loading, the hinge for fastening the ripper is located between the hinge of fastening the bucket to the handle and the hinge of fastening the handle with the hydraulic jack its turning. 2. Working equipment of the earthmoving machine according to and. 1, characterized in that the distance between the hinge of the ripper attachment and the hinge of the bucket attachment to handles are taken from the expression: R. +, -R ,, where Rf is the turning radius of the cutting edge ripper, RK - radius of rotation of the cutting edge bucket, a is the distance between the pivot points of the bucket attachment and the ripper. 3. Work equipment according to claim 1, characterized in that the ripper is fixed on the arm by means of a bracket rigidly connected to it. Sources of information taken into account in the examination 1. US patent ° 3273729, cl. 214-138, published. 1966. 2. USSR author's certificate A 377478, cl. E 02F 3/28, 1971 (irotype). Sh., - 7 ---- - about. -.-about . and about .-- with; . R. p "7. .. -; - :. ; . f ".. ::. Fig2