RU1779664C - Sling test stand - Google Patents

Abstract

The invention relates to testing equipment intended primarily for testing load gripping devices and can be used to test slings and ropes. SUMMARY OF THE INVENTION The stand comprises a stand, a drive consisting of a winch with a flexible pulling element fixed to its drum, passed through rollers and secured in a gripper a fixture to which a movable yoke with blocks is attached. The bed is equipped with a beam fixed to it with blocks and locks for securing the test gripper. Under the fixed traverse, a tared load with a bypass block is installed on the bed. I silt

Description

The invention is intended for testing slings and ropes of various lengths.

A well-known test bench for slings, comprising a support with racks mounted under the ends of a beam fixed to the support, in the central part of which there is a sieve cylinder with the ability to move along it and in the perpendicular direction with a device for attaching slings mounted on the housing, and mounted on the beam for slings

When using a hydraulic cylinder as a power cylinder, an oil station is required that requires highly qualified service, and testing slings of different lengths is impossible without additional installation and adjustment of the stand, since a rod extension is used to test longer slings

Lime; a tendency for testing gripping devices comprising a bed, a gripping device mounted thereon for connecting to the test device, articulated to

the beam of the beam, made up of a composite of the upper and lower frames, the first of which is connected by a flexible link with a chain hoist and made with holes in which the counterweight is fastened, equipped with a fastening device and mounted on the lower frame, the drive including a winch connected to the gripping device by means of flexible rods and tackle and a hydraulic cylinder connected to the bed and the device under test

However, this stand has significant dimensions, and the presence of a hydraulic cylinder requires the installation of an oil station, the maintenance of which requires additional material costs.

The aim of the invention is to reduce the dimensions of the stand

This goal is achieved by the fact that in a known stand containing a frame, a gripping device connected thereto connected to the test line connected to the drive by means of a flexible element connected to the frame, the main beam fixedly mounted

with

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according to the invention, the additional beam connected with the possibility of moving over the latter and the main counterweight according to the invention are rigidly fixed in the% frame, the additional one is parallel to the main one and connected to the gripping device, the counterweight is placed under the main beam, and the stand is symmetrically mounted on the main and additional beam with respect to the vertical axis of their symmetry in a checkerboard pattern by blocks for bending around the tested sling with the formation of a loop along this axis to connect with the counterweight ohm, and elements are fixed at the ends of the main beam for fixing the free ends of the sling.

The use of a fixed main and movable additional beams with blocks and elements mounted on them for fixing the free ends of the sling allows testing slings and ropes of various lengths

At the same time, the dimensions of the stand are reduced, since with the length of the line L having the number of branches n between the blocks, the length of the stand necessary for testing is reduced by a factor of 5.

The drawing shows a stand for testing slings.

The line for testing slings contains a frame 1, a drive consisting of a winch 2 with a flexible pulling element 3 fixed on its drum, passed through a block 4 and fixed in a gripping device 5, to which a movable beam 6 with blocks 1 is attached. The frame 1 is rigidly equipped fixed on it with the main beam 8 with blocks 9 and elements 10 for fixing the free ends of the sling 11 On the main beam 8 on the frame 1 is installed a counterweight 12 with a bypass block 13.

The stand works as follows

The sling 11 is located on blocks 7, 9 of the additional 6 and the main 8 beams, on which they are staggered relative to each other and along the bypass block 13, mounted on the counterweight 12, and fastened with ends to the elements 10 of the fencing Turn on the winch 2 and load the sling 11 with the specified load by tensioning the flexible pull member 3 and transferring the load through the blocks 4 and 4 of the gripping device 5 to the additional beam 6, which, when lifted, pulls the sling 11 The winch 2 works until the counterweight 12 breaks off from frames 1, wherein the triggered switch (not shown). The constant load is ensured by a tared counterweight 12, uniformly loading

sling 11

The proposed stand for testing slings has the following advantages in comparison with the prototype, the dimensions of the stand are less than 2 times, material costs for

testing decreased by 6 times

Claims (1)

SUMMARY OF THE INVENTION A sling test bench comprising a frame housed therein associated with with a tested sling, a gripping device connected to the drive by means of a flexible element, a fixed fixed main beam connected to the frame, placed with the possibility of moving over the last additional beam and a counterweight connected with them, which means that the main beam is rigidly reduced to reduce the dimensions fixed in the frame, additionally placed parallel to the main one and connected to the gripping device, the counterweight is placed under the main beam, and the stand is equipped with mounted on the main and additional The main beams are symmetrical about the vertical axis of symmetry in a circular / matte order by the blocks for rounding the test line with the test line to form a loop on this axis for connection with the counterweight, and elements are fixed on the ends of the main beam to fix the free ends of the line.