SU578907A3 - Driving device - Google Patents

Description

one

The invention is fire engineering.

It is known a driving device Jlj containing several shafts with pulleys mounted on a frame — connected 1 to each other by a flexible coupling with the possibility of their rotation in opposite directions, a tensioning device and an electric motor connected to one of the shafts.

The disadvantage of this device is that the geometrical ratios of the drive system, for example, the minimum distance between the shafts of individual working bodies, do not provide an appropriate angle of coverage of the belt and pulley and therefore a large amount of pressure should be applied. Due to the increased pre-tension, the shaft, the shaft on the drive side, the bearings, the working elements perceive the value of the additional radial load, which is many times greater than the f –f yarn resulting from ii3. working, loading.

The purpose of the invention is to increase operational reliability and service life.

This goal is achieved due to the fact that the pulleys are made two-handed, in | One} l of the creeks of which the flexible connection is located, the device is equipped with a second flexible connection located in the other creek and covering each pulley from the diametrically opposite side relative to its first connection, and the tension device is made in the form of two pulleys located on a common axis with a diametrically opposite eccentricity i and installed with the possibility of movement relative to the bed. The bend can be made in the form of a flat belt in the form of an eubchatogo belt or in the form of chains.

The bed is made with a groove in which an axis of the tensioning device is installed with the possibility of moving along it.

The device is equipped with a lever, one end of which is hingedly connected to the frame, and the other rigid- to the axis of the tensioning device.

FIG. 1 schematically shows the proposed drive unit; on

FIG. 2 - the same, top view; in fig. 3 / ishiv; in fig. 4 - tension device.

Claims (6)

the drive device contains several shafts with pulleys 1-10 horizontally aligned on one frame, connected by a meridian to a flexible coupling 11 rotatably in opposite directions, deflecting rollers 12, tensioning device 13 and electric motor 14, connected with one of the shafts. Each pulley 1-10 is made of two arms, in one of the streams of which there is a flexible connection. The device is equipped with a second flexible coupling 15, located in another stream and covering each pulley 1-10 from the diametrically opposite side relative to its flexible coupling 11. Tension device 13 is made in the form of two pulleys 16 located on a common axis 17 sec. diametrically opposite eccentricity on the rings 18 and the sleeves 19 and installed with the possibility of moving relative to the bed. The rings 18 can be rotated on the axis 17 to any position and after installation they are tightened with screws 20. The axis 17 has the ability to rotate around the axis 21 on the lever 22. The device operates as follows. By placing the flexible couplings 11 and 15 on the pulleys 1-10 and 16, the rings 18 are secured with the tightening screws 20 in a certain position, and, turning the device around the axis 21, the flexible couplings having the same preload will be pulled in the same position. least Tension can be carried out using springs or any other known method. The proposed drive device can be used not only in the linear arrangement shown in FIG. 1 and 2. The location and number of work items: pulleys and tensioning devices can be changed. The advantage of the drive device is that the angle of coverage of the drive element, as compared with those currently used, is approximately doubled, due to which the slippage of the drive element is reduced, and the efficiency is significantly increased. In addition, the resulting radial loads of the opposite direction are balanced. This means that the resultant radial load is approximately zero, i.e. the support is practically floating. The following flexible connections can be used in the proposed drive device: nylon belts having double-sided teeth, belts, chains, etc. Claim 1. Drive unit comprising several shafts mounted on a frame with pulleys interconnected by a flexible link with the possibility of rotating them in opposite directions, tensioning device and an electric motor connected to one of the shafts, characterized in that reliability in operation and service life; the pulleys are made two-handed, in one of the streams of which there is a flexible connection, the device is equipped with a second flexible connection located in the other stream and covers-. each pulley from the diametrically opposite side relative to its first bond, and the tensioning device is made in the form of two pulleys located on a common axis with a diametrically opposite eccentricity and mounted with the possibility of moving relative to the bed. 2. The device according to claim 1, characterized in that the flexible connection is made in the form of a flat belt. 3. The device according to claim 1, characterized in that the flexible connection is made in the form of a toothed belt. 4. The device according to IjO and tl ach ach e with the fact that the flexible connection is made in the form of a chain. 5. Device on PP. 1-4, this is due to the fact that the frame is made with a groove in which the axis of the tensioning device is mounted so that it can move along it. 6. The device according to PP, 1-4, which is equipped with a lever, one end of which is pivotally connected to the bed and the other rigidly to the axis of the tensioning device. Sources of information taken into account in the examination: 1. Modern equipment for straightening metal in the USSR and abroad. M., NIIINFORMTYAJMASH, 1969, p. 16, FIG. 46.  // Щ Щ Щ Ш1ЩЗД1ЩЩ P (pLf8.2 (RK.K.