SU1323508A1 - Device for checking the tightening of flexible traction member - Google Patents

Abstract

The invention relates to devices for controlling the operation of lifting installations. The aim of the invention is to reduce the size of the device. The device contains a canadian driving pulley 1, an intermediate pulley 2, which are fixed on shafts kinematically connected with each other, and a bypass roller 3. Pulleys 1, 2 and roller 3 are in contact with a pulling member 4. Kinematically coupling shafts of pulleys 1, 2 made in the form of a differential mechanism, the carrier of which is mounted on the shaft of the gangway, its pulley 1 with the possibility of rotation relative to it. When the traction device 4 slips relative to the pulley 1, proceeding in case of loosening of tension, the carrier will turn around the shaft of the pulley 1. At the same time, the pulley 2 with its shaft will rotate with the carrier around the shaft of the pulley 1. As a result, the angle of coverage 4, the pulley 1 will be enlarged by the govine body, which will lead to the disappearance of the slipping of the pulling body 4 along the pulley 1. 2 Il. CO 00o with the joint venture about 00 SrigL

Description

This invention relates to devices controlling the operation of hoisting machines with friction pulleys.

The purpose of the invention is to reduce the size of the device.

FIG. 1 shows a device, side view; in fig. 2 is a view A of FIG. one.

The device contains a traction sheave I, an intermediate pulley 2 and a pulley 3, in contact with the traction

In the case of loosening the tension of the traction device 4, it begins to slip relative to the pulley 1. In this case, the angular speed of the pulley 2 driven by the traction device 4, as well as the gear-satellite 10, decreases. This leads to the case that the carrier 11 begins to turn (clockwise, fig. 1) around the shaft 5. At the same time, gear 8 rolls around gear 7, and pulley 2 (with shaft 6) turns on body 4. Pulleys 1 and 2 are fixed They fit together with housings 11 around shafts 5 and 6, kinematically interconnected by cylindrical gears 7-10, placed in housing 11, which is mounted on shaft 5 freely, with the possibility of rotation relative to shaft 5. Diameters

JlVJUWL / jlItJV l.ll - I l, l) J.LJlJ.V LJLAtflt Vy./, ltJI4.4 - l Lf UlAC ,,

Pulleys 1 and 2, a as well as the number of teeth of the gear) along pulley 1.

Ren 7 and 10 (fixed on shafts 5 and 6 of these pulleys) are related by

la 5 (i.e., around the traverser pulley 1), as a result of which the angle of coverage of the pulley 1 by the pulley 4 increases, which leads to a reduction and complete disappearance of the pulling body slip (in addition, the slack is also selected when pulling the pull rod 4. Thus, the required P "(minimum required) tension of the pull rod 4 is automatically restored using the drive of the device itself.

c. 0

In addition, in this case, slack is selected, which occurs during the extraction of the coupling member 4. Thus, the required P «(minimum required) tension of the coupling member 4 is automatically restored using the drive of the device itself.

In this case, in the absence of slippage of the thrust member 4 along the pulley 1, the bodies 11 do not change their angular position (fixed).

The device works as follows.

Rotation from the traverser pulley 1 through a cutting body (rope, cable) 4 is transmitted to the intermediate pulley 2. Simultaneously, pulley 1 and shaft 6 of pulley 2 rotate gears 7 and K, respectively), i.e., a differential mechanism is obtained

with two entrances (to the sun wheel 7 30 to reduce the overall dimensions of the device, kinematic and satellite 10) and one output (the short link between the pulley shafts is sousus-driver 11). In the absence of slippage, the differential mechanism, the carrier forging (during normal operation of the device) of which is mounted on the shaft of the trader-carrier-carrier 11, is fixed, and the angle of the outer pulley can be rotated from the pulley by the pulley body 4 does not change.

Claims (1)

Invention Formula A device for controlling the tension of a flexible traction organ, containing a trailing head and intermediate pulleys, mounted on shafts, kinematically connected between each other, characterized in that In the case of loosening the tension of the traction device 4, it begins to slip relative to the pulley 1. In this case, the angular speed of the pulley 2 driven by the traction device 4, as well as the gear-satellite 10, decreases. This leads to the case-carrier 11 begins to turn (clockwise, Fig. 1) around the shaft 5. In this case, the gear 8 rolls around the gear 7, and the pulley 2 (with the shaft 6) turns with the housings 11 together with the shells 11 around your ,, Nata) on a pulley 1. la 5 (i.e., around the traverser pulley 1), as a result of which the angle of coverage of the pulley 1 by the pulley 4 increases, which leads to a reduction and complete disappearance of the pulling body slip (in addition, the slack is also selected when the traction body is pulled out 4. Thus, the required (minimum necessary) tension of the traction body 4 is automatically restored using the drive of the device itself. downsizing of the device, kinematic coupling of the pulley shafts is a formula of the invention A device for controlling the tension of a flexible traction organ, containing a trailing head and intermediate pulleys, mounted on shafts, kinematically connected between each other, characterized in that view A