SU1430812A1 - Arrangement for testing cables for multiple bending - Google Patents

Abstract

The invention relates to a testing technique and can be used to test cables for multiple bends. The purpose of the invention is the expansion of technological capabilities. The device comprises a base 1 with a carriage 3 placed on it, kinematically connected with a drive of its reciprocating movement, grippers 13 and 17 for fastening the ends of the cable 14, a tensioning mechanism 15 and a bend assembly of the cable 14, made in the form of two blocks containing the same number of rollers 18, 19, installed in each block coaxially. In this case, the axes of the rollers 18, 19 of different blocks are set at an angle oL to each other, and the angle о is determined from the dependence tg 06/2 Bp / 2 (D + H), where Br is the width of the rollers; B is the diameter of the rollers; H - the height of the flange rollers. The cable 14 is secured in the grippers 13, 17, sequentially bending rollers 18.19. The tensioning mechanism 15 sets the tension and turns on the drive for moving the carriage 3. When the latter moves, the cable 14 is successively bent along the entire length around the rollers 18, 19 without twisting, and installing the rollers 18 and 19 at an angle and coaxially in each of the blocks provides an increase in angle coverage of rollers 18, 19 with cable 14. 2 ill. c ((L 12 17 J6 15 Fig, 1

Description

The invention relates to testing equipment, in particular to devices for testing cables for multiple bends.

The purpose of the invention is the expansion of technological capabilities by providing an increase in the angle of coverage of the roller with the test cable.

Figo 1 shows a diagram of the proposed device; in fig. 2 - the location of the roller node inflection.

The device comprises a base 1, on which guides 2 are fixed with a carriage 3 mounted on them, kinematically connected with a drive of its reciprocating movement, made in the form of a gear sector 4 connected with a gear wheel 6 rigidly fixed on the shaft 5, which in its turn associated with the traction wheel 7. The latter, with the help of the extension of its extension 8 through fixed on the base 1 using the appropriate brackets 9 and 10 rollers 11 and 12 are connected with the carriage 3. On the bracket 9 is fixed passive gripper 1 3 for fastening one end of the cable 14. On the base 1, a tensioning mechanism 15 is installed, which through a dynamometer 16 is connected with an active gripper 17 mounted on the guides 2 for fixing the other end of the cable 14. On. The carriage 3 is fitted with a knuckle assembly of cable 14, made in the form of two blocks containing the same number of interchangeable rollers 18 and 19. In this case, the rollers in each block are mounted coaxially, and their axes are located in a plane perpendicular to the tensioning mechanism 15, and the rollers 18 and 19 in the blocks are set at an angle to each other, with the angle cc between the axes of the rollers 18 and 19 of the different blocks being determined in accordance with the undersuitability

2 2 (D + H)

where BP is the width of the rollers;

D is the diameter of the rollers;

H - the height of the flange rollers. The device works as follows.

The rollers 18 and 19 of the inflection knot are pre-installed in accordance with the VII with the given angle o (., Determined by order 11, we put 5 stems. One end

with

5 d 5 n

0

five

five

cable 14 is secured in a passive gripper 13, cable 14 is sequentially skirted around rollers 18 and 19 of the bend assembly, and the second end of cable 14 is fixed in an active gripper 17. With the help of tensioning mechanism 15, tension force of cable 14 is controlled, which is controlled by a dynamometer 16. After that, the drive of the reciprocating movement of the carriage 3 is turned on. When the sector 4 is rotated, the gear wheel 6 connected to it and the traction wheel 7 rotate. The latter through the extension 8 moves the carriage 3. At the same time the cable 14 is successively bent over all lengths around rollers 18 and 19, moreover, since the angle between axes 18 and 19 is insignificant (around 0.4-rad.), test cable 14 is not subject to twisting when moving from roller to roller, and installing rollers 18 and 19 at an angle to each other with the coaxiality of the latter in each of the blocks provides an increase in the angle of coverage of the rollers with the test cable.

Claims (1)

Invention Formula A device for testing cables for multiple bends, comprising a base with a carriage placed on it, kinematically connected with a reciprocating drive, clamps for fastening cable ends, a tension mechanism and a bend assembly with interchangeable rollers with grooves mounted rotatably on the carriage , which differs from the fact that, with the aim of expanding technological capabilities by providing an increase in the angle of coverage of the roller with the test cable, the inflection unit is made in the form of two blocks, each otorrhea comprises the same number of parallel set of rollers, whose axes are located in one plane, perpendicular zhnogo tensioning mechanism molecular axis, and the angle between the axes of the rollers of different units is determined from the relationship tg ot B By + ny where BP is a roller; D is the diameter of the roller; Н - depth of roller grooves. /four