SU1146581A1 - Running device for rope testing - Google Patents

Abstract

RUNNING MACHINE FOR CHANNEL TEST, containing the frame mounted on it a multi-turn pulley. drive, crank-polyspast mechanism, loading unit, made in the form of a load rope, replaceable loads attached to one of the ends of this rope, and blocks mounted on the frame, grips for fastening the ends of the test rope, connected to the other end of the load rope, so that, in order to reduce energy consumption, it is equipped with a roller mounted on the frame, a movable block and a driven load, the loading rope is stored in the movable block, one end of the rope by the crank pulley mechanism bends around olik and fastened with a drive load.

Description

(L

four

O5

cl

00

The invention relates to a testing technique in mechanical engineering and can be used to carry out tests for hoisting ropes for wear.

Closest to the invention is a CJJ rope testing machine, containing a frame, a multi-turn pulley mounted on it, a drive, a crank-polyspast mechanism, a loading unit made in the form of a loading rope, interchangeable weights fixed on one of the ends of this rope, and blocks mounted on the frame, grips for fastening the ends of the tested rope, connected to the other end of the loading cable 1.

A disadvantage of the known machine is that it has a large power consumption, whereas only a small part of it is used to test the rope, which is caused by the need to expend power to operate the intermediate nodes of the machine.

The purpose of the invention is to reduce energy consumption when testing a rope on a jogging machine.

The goal is achieved by running a rope test machine containing a frame, a multi-turn pulley mounted on it, a drive, a crank-polyspast mechanism; the loading unit, made in the form of a load rope, interchangeable loads attached to one of the ends of this rope, and blocks installed on the frame, the grippers for fastening the ends of the test rope, connected to the other end of the load rope, are provided with a roller mounted on the frame, the movable block and the driven load, the load rope is stored in the movable block, one end of the rope by the crank-polyspast mechanism bends around the roller and fastened to the driven load.

FIG. 1 shows a rope testing machine; in fig. 2 is a view A of FIG. one.

The machine contains a frame 1, a multi-turn pulley 2 covered by the turns of the test rope 3, an actuator consisting of an electric motor 4 and a gearbox 5, a crank-pulley mechanism including a crank 6, a stationary holder 7, a movable holder 8 and a cable 9, a drive drum 10, roller 11, drive

load 12, rack 13, load rope 14, roller 15, interchangeable loads 16, rope 17 and roller 18. One fixed end of the cable 9 is fixed on frame 1, and the movable covers drive drum 10, thrown over roller 11 and connected to driving load 12. Stationary holder 7 mounted on the frame 1, and the movable holder 8 - on the crank 6.

The running machine works as follows.

On the multi-turn pulley 2, several turns of the tested rope 3 are wound. The ends of the rope -3 are connected to the loading cable 14 by means of clamps (not shown). The tension of the tested rope 3 is given by the weight of interchangeable loads 16.

When the crank 6 rotates from the drive with the help of the electric motor 4 and the gearbox 5, it starts to rotate around the axis of the crank

6 and the movable holder 8 crank polyspastnogo mechanism. Change in distance between mobile 8 and fixed

7-reel causes the movement of the rope 9, which imparts rotational movement to the drive drum 10. The drive load 12 holds the traction

5 rope 9 under constant tension. The drive drum 10 imparts a reciprocating motion to the multi-turn pulley 2. Subject 3 and the load 4 ropes form a closed loop tensioned by a removable load 16 by means of the roller 15.

0 Since the distance between cable 2 and roller 15 is constant during the movement of the ropes 3 and 14, the interchangeable loads 16 will take a constant height position. This means that inertial forces do not arise and the rope 3 is under a constant load, determined by the size of the interchangeable loads 16.

The magnitude of the drive load 12 depends on the efficiency of the drive drum 10, pulley 2 and the bending strain losses of the ropes 3, 9, 14, 17. The drive power of the transceiver depends only on the efficiency of its nodes, the rigidity of the ropes and the weight of the drive load 12.

When testing larger diameter ropes, only the flexural rigidity of the tested rope 3 influences the increase in the consumed power, and the increase in the weight of replaceable weights 16 does not affect the drive power. This achieves a reduction in energy consumption for the drive of the running machine.

Futl

Claims (1)

ROPE RUNNING MACHINE, containing a frame, a multi-turn pulley mounted on it, a drive, a crank-pulley mechanism, a loading unit made in the form of a load rope, interchangeable loads' fixed at one end of this rope, and blocks mounted on the frame, grippers for attaching the ends of the tested rope, connected to the other end of the load rope, characterized in that, in order to reduce energy consumption, it is equipped with a roller mounted on the frame, a movable unit and a drive weight, a load rope apasovan at the mobile unit, one end of the rope krivoshipnopolispastnogo mechanism encloses the roller and is secured to a drive load.