SU1331959A1 - Working member of bucket-wheel excavator - Google Patents

Abstract

The invention relates to the field of earth-moving machinery. The goal is to increase productivity by increasing the outrigger capacity of the buckets. For this, the radius of curvature of the rear wall of each of the buckets 2 ,. mounted on the rotor 1 is determined from the ratio "Yas-H-. ГЖ,. (3it,) l „. j- where R. is the radius of curvature of the back wall: ki, m; RP is the radius of the rotor, m; g, / iJ - kinematic radius; progressive speed of the excavator, m / min; uJ — rotor angular velocity, m / s; & 4 j, is the increment of the angle for the j-ro split; - bucket angle, hail; n - number of splits; arccos () / Rp - angle, hail; H is the depth of digging, m; l „- the relaxation coefficient of the soil, cm (cm). To avoid friction of the bottom of the ground, it should not reach the point C of the bottom. The shape of the bottom should be determined by the speed of the trench excavator and the lowest angular speed of the rotor. ) il. :. O) with sd with

Description

FIELD OF THE INVENTION The invention relates to earthmoving machinery, namely, to working bodies of rotary excavators.

The purpose of the invention is to increase productivity by increasing the outflow capacity of buckets.

The drawing shows the working body, a general view.

The working body contains a rotor 1 with buckets 2 having a bottom 3, front and rear walls. In this case, the back wall has a curvilinear shape, and the radius of curvature is determined from the relation I

R. - R ", i-k P

G 1

Vl-2 - / Rp A /(,,-f/RpIlu.)+A, J - 1;)

R is the radius of the rotor;

Where

g lO

- kinematic radius;

progressive speed

an excavator;

corner soon. rotor;

g - arc cos

R.

- angle

N zabo;

digging depth;

QH

Jk

-

angle increment dl

j-ro split;

M - bucket angle;

n is the number of splits;

l - relaxation coefficient of soil resistance, with ACh. 0,

Jk

.

when the rotary tool body of the trench excavator operates, after the bucket 2 teeth exit the yabo, the top point C of the bottom remains stationary, and the trench excavator, along with the rotor 1 and the bucket 2, continue to move in the direction of the exit point of the tooth at the speed V, while the rotor has speed

Editor S.Pekar

Compiled by L. Kotelnikova

Tehred I.Popovich Proofreader A.T.

Order 3776/27 Circulation 606 Subscription

VNISHI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

and). In order for the bottom 3 of the bucket not to reach the fixed point of the bottom in order to prevent the bottom from rubbing against the ground, its shape must be determined by the speed of the trench excavator and the lowest angular speed of the rotor.

invention formula

The working body of the rotor excavator includes a rotor with peripheral buckets having front and rear walls, the last of which has a curvilinear shape and a bottom, characterized in that, in order to increase productivity by increasing

The bucket capacity, the radius of curvature of the back wall of each of the buckets, is determined from the following relationship:

R.. R

25

./ ,.

 (3 ,.).

j: 1V 1

Where

R. - radius of curvature of the back

walls, m; R is the radius of the rotor, m;

V

- - kinematic radius;

H.

V 1 .0 L. progressive speed

excavator, m / min;

rotor speed,

m / s;

angle increment for j-ro

splitting, hail;

bucket angle, hail;

n is the number of splits;

M, arc cos

Rj,

R

- angle behind

bo, hail;

N -. depth of digging, m;

Ld - coes1) soil relaxation factor, cm, nd. 1-2 cm at. l f. Oh, bd -O

Claims (1)

^ Claims The working body of a bucket wheel excavator, including a bucket with peripheral buckets having 15 front and rear walls, the last of which has a curved shape and a bottom, characterized in that, in order to increase productivity by increasing the remote 2o capacity of the buckets, the radius of curvature of the rear wall each of the buckets is determined from the following ratio: excavator translational speed; rotor angular velocity; R _P _- N -2 r / R _p , J = 1 dH. = Jk arc cos DU-E ·. digging angle; angle increment for where R. is the radius of curvature of the rear 30 walls, m; R is the radius of the rotor, m; V „r = is the kinematic radius; slaughter; depth _! k_ η j-ro partitions; bucket angle; number of partitions; relaxation coefficient of soil repulse, with hL>. = 0, l _and = 0. During the operation of the rotary working body of the trench excavator after the teeth of the bucket 2 exit the Face, the top point C of the face remains stationary, and the trench excavator together with the rotor 1 and the bucket 2 continue to move towards the exit point of the teeth from the face with a speed of V _h , while the rotor has angular velocity V _h - translational speed of the excavator, m / min; <6 — rotor angular velocity, ψ m / s; & .H. = .A is the increment of the angle for the j-ro partition, deg; H is the angle of the bucket, deg; η is the number of partitions; Q = arc cos ----- - angle of - ³ r battlefield, deg; N - digging depth, m; L _o - relaxation coefficient of the Soil, cm, A _o = 1-2 cm, at. Λ Ϊ. = 0, Δ4 = 0