SU1208002A1 - Device for regulating tension of flexible member - Google Patents

Description

one

The invention relates to a lifting and transport engineering and can be used in construction hoists and ship winches.

The aim of the invention is to improve the reliability of the device.

Fig. 1 shows a device for dd tension control of a flexible organ, general view; figure 2 is the same, top view.

The device for adjusting the tension of the flexible member includes a housing 1 in which the actuator 2 is placed. A support roller 3 is installed on the output shaft of the actuator 2. An axle 4 is mounted in the housing 1 | On the axis 4, the rod 5 is fixed for rotation around it. 5, tensioning rollers 6 are installed. Rope 7 is locked between the tensioning and support rollers. The rods are spring-loaded in the direction of the rope 7 by springs 8 equipped with adjusting screws 9. One of the rods 5 is provided with an abutment 10 passing through groove II in housing 1. On the housing 1 is placed the end switch 12 with normally open contacts, included in the power supply circuit of drive 2. Limit switch 12 is installed. with the possibility of his contact push080022

element with an emphasis 10 at the end of the | yes rods 5.

The device works as follows.

5 Under normal tension of the rope 7, the rod 5 is in the upper position. The drive chain is then de-energized and the rope 7 slides between the freely rotating rollers 3 and

10 6.

When the tension of the rope 7 is reduced, the rod 5 is lowered under the action of the springs 8, thus providing a sample of the slack of the rope 7, preventing its folding and preventing it from falling on the winch drum. If the bending of the rope with 7 tension rollers 6 is not enough to pick up its slack, then at the end of the turn

The 20 rods 5 are pressed by the stop 10 of the limit switch 12. The actuator 2 is activated, and the support roller 3 begins to rotate forcibly, dropping excess rope 25 in the direction of the winch. In this case, the rotational speed of the roller 3 is greater than the maximum speed of the rope 7 than provides tension the latter is needed to preserve its unshakable 30 collapsible stacking on the winch drum.

FIG. 2

Compiler S.Nefedov Editor M. Bandura Tehred L.Mikesh Proofreader M.Demchik

Order 164/30 Circulation 800 Podpisnoe VNIIPI USSR State Committee

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

Branch PPP Patent, Uzhgorod ,. ul.Proektna, 4

Claims (1)

DEVICE FOR REGULATING TENSION OF A FLEXIBLE BODY, containing support and tension rollers located in one plane with the possibility of storing a flexible body with normally open contacts, the tension rollers mounted on rods mounted movably with the possibility of changing the angle of coverage of at least one support roller by a flexible body when moving them and reaching contact with the pressure element of the limit switch at the end of the stroke of the rods, characterized in that, in order to increase the reliability of operation, the support rod uk has a drive included through said limit switch, mounted on a rod