SU509502A1 - Lifting gear - Google Patents

Description

(54) LIFT AND TRANSPORT DEVICE

one

FIELD OF THE INVENTION The invention relates to lifting and transporting devices used, for example, in mechanical engineering.

A lifting and transporting device is known, which contains an outer drum with a screw guide chute on its inner surface, connected to a drive for its rotation. During the operation of the device, the inner drum rotates by means of magnetic forces, carries along the transported products, which gradually rise up along the screw tray.

However, such a device cannot transport non-ferromagnetic products. In addition, it is impossible to transport metal chips, because its sharp edges, falling into the gap between the rotating surface of the drum and the side surface of the screw tray, can lead to jamming of the device.

The aim of the invention is to expand the scope of use of the lift.

For this, the drive of the drum rotation in the proposed device is made in the form of spiral gears forming a three-stage gear mechanism, and the angle of elevation of the cable-stayed line of the tray is less than the angle of friction of the materials of the tray and the transported product.

FIG. 1 shows the proposed lifting device, side view; in fig. 2 shows a section along A-A in FIG. 3 t section; B-B in FIG. 1; in fig. 4 shows a unit for communicating uneven rotation to the drum.

The lifting and transporting device: includes a rotating drum 1, on the inner surface of which there is a screw tray 2. On the inside, the flow is closed by a cylindrical yoke 3. At the bottom of the drum there is a collar 4 with a side 5 for loading. On this site fixed partitions 6, directed along a smooth curve from the outer edge of the site to the inside. A circular platform 7 with sides 8 is installed in the upper part of the drum. Curvilinear directions 9 and 9 are fixed on it and a window U is made for unloading. Rotating drum is connected

with: a node for communicating an inevitable rotation and rotation to the drum. This assembly is a three-bar gear mechanism of non-circular helical wheels. The axles of the drive wheel 11 and the driven wheel 12 are connected to the bed 13. The wheel centroids are (equal spirals.:

During operation of the device, the spiral gears rotate around fixed axles, the traveling wheel, coupled with the drive to the engine, rotates uniformly. When driven, the wheel is unevenly distributed, and the periodic smoothly increasing speed alternates with a sharp decrease. A sharp decrease in the speed of rotation of the driven wheel occurs in the transition of the engagement from the end of the helix to its beam when a collision of the links of the gears takes place. Such uneven rotation is transmitted to the drum. Transported material, such as metal shavings, fall asleep on the loading platform .. Under the action of dynamism. loads occurring at the moments of a sharp decrease in the speed of rotation of the drum, the chips initially move along curved guides to the inner

K1) ayu pad, then the ng tray enters and gradually rises. The coating material of the tray and the nature of the surface egs are chosen so that the angle T11en is the largest with this transported product. The elevation angle of the screw pan is set smaller than the friction angle. This is done so that during a gradual increase in speed, the transported products would not slide back and down.

When reaching the upper round platform, the metal chips will move along curved guides to the unloading window.

Claims (1)

Invention Formula A lifting-transporting device comprising a drum connected to the drive with a screw guide by an empty tray on the inner surface, characterized in that, in order to expand the sphere of use, the drive of the drum rotation is made in the form of spiral gears forming a three-section, gear wheel mechanism, and the angle of the cable stand of the tray is less than the friction angle of the materials of the tray and the product being transported. J ol lo J. ///////// I Y //////// lo | ol FIG. t Aa ten FIG. 3 //