SU759659A1 - Excavator scoop - Google Patents

Description

The invention relates to the field of construction and can be used for the development of frozen soils.

Known excavator bucket with vibrating teeth Γΐ ^.

The housing form predstavlya- bucket ⁵ is a welded construction in which the movable teeth are inserted. Vibro-impulses are communicated to the teeth by two vibratory hammers mounted in the front hollow wall of the bucket body, ¹⁰

However, when moving the ladle during cutting chips soil collapses under compressive and shear stresses generated by the action of moving the cutting krom- ^'5 ki. Due to the fact that the soil is destroyed by compression and cleavage, considerable cutting efforts are required, and, consequently, the high energy intensity of development _per unit volume of soil.

The closest solution known to the invention is an excavator bucket, comprising a casing, before

2

nude wall with a '. guide frame, in which the teeth are mounted with the ability to / move in the feed direction of the bucket: by means of a vibromechanism with a drive

{2]. The drive is made by a crank and provides, in addition to the longitudinal movement of the teeth, vertical, which allows you to create additional /

Grunt pullout force. '

The disadvantage of this bucket is a dynamic overload of the front wall, due to the vibration-impact effect of the drive connecting rods on it.

The aim of the invention is to reduce the dynamic loads on the bucket by eliminating the beats of rods on the front wall.

This goal is achieved by the fact that the connecting rod with the guides made sliders, and the guides are connected to the front wall through horizontal transverse hinges.

759659

FIG. 1 shows an excavator bucket, general view; in fig. 2 — section A — A in FIG. 1 (vibration drive design); in fig. 3 - 6 - soil development scheme. _five

In the cavity B of the front wall 1 of the bucket 2, the balance frame 3 is placed, the ball is connected to the side walls of the bucket 4. In the guide grooves of the balance frame 3 are inserted movable teeth of the U 5, which are rigidly connected to the connecting rods 6, pivotally connected to the eccentric shaft 7, fixed in under ~; on the case of the front wall 1 "and connected to the drive 8, for example β

hydraulic motor. '

In the process of scooping the bucket 2, the eccentric shaft 7 simultaneously rotates. At <X'-0—90 °, the tooth 5 'becomes in the position 20 at which its introduction into the soil begins. When = 90 - 180®, as a result of the accelerated movement and rotation of the tooth to <А -0 °, its ground is impaled. With the further rotation of the 25 eccentric shaft 7 - 1 0 270 °), the rise and departure of the tooth 5 occurs, which leads to the separation of the columnar soil from the common massif.

When the eccentric shaft rotates at an angle of = 270 - 360 °, tooth 5 moves to the extreme right position, facilitating the scooping of the torn off soil. Further process repeats. Thus, the destruction of the soil occurs. by impact nagging and tearing, leads to a decrease in the energy intensity of the soil. Moreover, since the rods 6 shkol-. the son-in-law is constantly in the guide grooves of the balance frame 3, their beating on the front wall 1 is absent.

Claims (1)

Claim Excavator bucket, including the cutting front wall with internal longitudinal guides, crank mechanism, the rods of which are inserted into the guides, and the teeth rigidly fixed On rods, in order to reduce the dynamic loads on the bucket by excluding beats of connecting rods on the front wall, connecting the connecting rods to the guides are made by sliders, and the guides are connected to the front wall by means of horizontal transverse hinges.