SU899760A1 - Working member of bucket-wheel excavator - Google Patents

Description

(54) WORKING ORGAN OF ROTARY EXCAVATOR

I

The invention relates to machines for open pit mining, and specifically to the working bodies of rotary excavators.

The working body of the rotor excavator, including a rotor wheel with buckets, in which the locking sector is L-shaped in cross section, and on the inner side of the rim of the rotor wheel are mounted blades. This solution accelerates the unloading of buckets 1.

However, during the excavation of sticky soils, sticking occurs (and in winter - freezing) of the latter on the bottom, which reduces the efficiency of unloading and the effective volume of buckets.

Also known working body of a rotor excavator, including a rotor wheel, buckets with a chain bottom and an intermediate link, which is pivotally connected to the rear wall of the discharge port, made at an angle to the radius of the rotor for the intermediate link 2.

At the expense of the intermediate link, the efficiency of unloading the buckets is increased, but only the soil placed at the rear of the bucket.

The purpose of the invention is to increase productivity by improving unloading buckets.

The goal is achieved by the fact that in the working body of a rotary excavator, including a rotor wheel and buckets with 5 knives, having front and rear edges with side walls and with chain bottoms connected to the trailing edge of knives and intermediate links, each intermediate link is set the back, Q is the edge of the knife and is equipped with two consoles and cncarnes connected to them by external lugs that are rigidly fixed on the front edge of the knife, while the gap between each console and the side walls of the knife is larger than the side second supply 5 operating element.

FIG. 1 shows a working body of a rotary excavator, side view; in fig. 2 -, view A in FIG. one; in fig. 3 shows the node I in FIG. one.

The working body includes a rotor wheel 1 with buckets 2, each of which contains a knife 4, a chain bottom 3, an intermediate link 5, a cantilever 6 and external arms 7.

The knife 4 and the rear ends of the chains of the bottom 3 are fixed on the rotor wheel 1. The front ends of the chains are fixed on the intermediate link 5. Intermediate link 5 is installed right next to the knife 4 with a small (excluding soil spillage) gap. By means of consoles 6 and remote lugs 7, link 5 is pivotally connected to knife 4. Due to the length of consoles 6 and remote lugs 7, a shoulder (radius) is formed with which link 5 is rotated in a hinge.

The distance from the cantilevers of the intermediate link 5 to the side wall of the knife 4 is longer than the lateral feed of the buckets 2 at the bottom. In this case, the console does not interfere with the passage of the cut soil in the rotor buckets. Installing the intermediate link 5 butt close to the knife 4 ensures the free passage of the soil into the buckets.

After scooping, the buckets 2, due to the rotation of the rotor wheel, rise to the top position for unloading, the soil under the action of the forces of its own weight and the weight of the chain bottom and intermediate link moves inside the rotor wheel and further to the feeder.

The application of the invention provides, by moving the joint of the intermediate link with the knife forward, a greater mobility of the chain bottom, which increases the efficiency and accelerates the unloading of the soil from the front of the bucket. Acceleration of the unloading process makes it possible to increase the rotation speed of the working device AND, accordingly, to increase the productivity of the excavator.

Claims (2)

1. USSR author's certificate number 333252, cl. E 02 F 3/24, 1971. 2. USSR author's certificate No. 631602, cl. E 02 F 3/24, 1977 (prototype).