RU72215U1 - TAKHKINOV CAPACITY DEVICE - Google Patents

Abstract

A load gripping device comprising a load trolley with a cargo drum and a lower beam suspended on ropes enveloping the blocks mounted on it, characterized in that a load-lifting member is located on the lower beam, and the device further comprises an upper beam suspended by the attachment point to the load-lifting mechanism, with the blocks and balancer mounted on the upper traverse, which envelope the ropes of the lower traverse, while the ropes are fixed at one end on a cargo drum, and the blocks of the upper and The traverses are placed symmetrically relative to each other in a circle or ellipse.

Description

The utility model relates to hoisting and transport machinery, namely to hoisting devices carrying a load-gripping body

The lifting device of an overhead crane is selected as a prototype (see USSR author's certificate No. 1209586, class B66C 17/00, B66C 01/10, application filing date: 03/30/1984, publication date: 02/07/1986, applicant: All-Union Scientific Research and Design Institute of Hoisting and Transport Engineering).

The known technical solution comprises a cargo trolley, on the frame of which a winch drum is installed. The frame rests on rollers moving along the crane bridge. Supporting trolleys are attached to the frame of the cargo trolley using hinges. Both trolleys are supported by rollers. A load-carrying traverse carrying gripping bodies (hook) is suspended from the load and support trolleys and on the ropes. The ropes at one end are fixed on the cargo drum, and at the other end on the frames of the support trolleys. In this case, the ropes go around the main blocks mounted on the traverse and additional blocks.

A disadvantage of the known technical solution is the insignificant rigidity of the structure, due to the presence of displacements of the beam, especially at high altitudes, which leads to a decrease in the reliability of the structure.

The objective of this utility model is to increase the reliability and rigidity of the structure.

To solve this problem, a Tashkinov load-gripping device, comprising a cargo trolley with a cargo drum and a lower beam suspended on ropes enveloping the blocks mounted on it, according to the proposed utility model, a load-gripping body is located on the lower beam, and the device further comprises an upper beam suspended by a node fastenings to the load-lifting mechanism, with the blocks mounted on the upper traverse and the balancer which envelope the ropes of the lower traverse, while the ropes are one con They are fixed on the cargo drum, and the blocks of the upper and lower traverses are placed symmetrically relative to each other in a circle or ellipse.

The proposed technical solution is a hoisting rope pulley mechanism consisting of two equal segments of the rope and two flat disks mounted on them along the generatrix line of each disk blocks.

Tashkinov’s load-gripping device becomes a mechanism as a result of the assembly of its parts by a special plexus of hoisting ropes with disk blocks, forming a rigid cylindrical shape only when the device is suspended from a crane. For this, the upper crosshead is equipped with a knot for attaching it to the running gear of the crane. A rigid lateral cylindrical surface reinforced with ropes (“face-rope”), which connects the upper traverse with the lower, eliminates lateral vibrations from the vertical axis during the tension state of the ropes. The tension state of the ropes is ensured by the tension of the lower beam with the equipment placed on it. At the same time, the larger the load on the movable lower beam, the stiffer the rope face, the rope becomes stronger than the metal pipe.

The point of the hook, which hangs freely on the cargo winch of all cranes, has become a rigid lifting area of the beam.

The balancing device, placed on top of the axis of the geometric center of the upper beam, serves to eliminate vibrations of the hoisting ropes, compensate for possible unevenness in the degree of tension of these ropes and to eliminate possible vibrations of the lower beam with respect to the vertical axis of the suspension.

As can be seen from the above, the proposed technical solution improves the reliability and rigidity of the structure.

The claimed technical solution has differences from the prototype (see USSR author's certificate No. 1209586, class B66C 17/00, B66C 01/10, application filing date: 03/30/1984, publication date: 02/07/1986, applicant: All-Union Scientific research and design institute of lifting and transport engineering), therefore, meets the criterion of "novelty."

The claimed technical solution can be obtained and used in industry, therefore, meets the criterion of "industrial applicability".

The essence of the proposed technical solution is illustrated by drawings, where

- figure 1 - schematically shows the lifting device Tashkinova;

- figure 2 is a diagram of the rope storage.

An example of a specific implementation.

The inventive load-gripping device Tashkinova, which is a volumetric polyspast cargo truck, contains the upper beam 1 with the blocks of the upper beam 1b placed symmetrically around the circumference or ellipse, which is “flexibly rigidly” connected in a special way by the hoisting ropes 3 to the lower beam 2 through

placed on it symmetrically around a circle or ellipse blocks of the lower beam 1n (see figure 1).

The lower traverse 2 is equipped with a load-gripping body in figure 1 is shown by a dotted line.

A two-rope radial hoisting rope hoisting system is shown in FIG. 2.

Tashkinov's load-gripping device as an independent product has no shape, as it contains two pieces of rope and two disks with blocks, and becomes a mechanism with a rigid cylindrical shape only when it is suspended from a crane. Due to the fact that the upper beam 1 is rigidly connected by means of the attachment 4 to the truck 5 of the crane 6. In this case, it is possible to disconnect the upper beam 1 from the truck 5 of the crane 6.

The hoisting ropes of the load-lifting mechanism of the truck 5 of the crane 6 form a rigid cylindrical reinforced lateral cylindrical surface - “face-rope”, which connects the upper beam 1 with the lower beam 2. As a result, the lateral vibrations of the load-gripping device from the vertical axis during tension of the lifting ropes are excluded.

The balancing device 7, placed on top of the axis of the geometric center of the upper beam 1, serves to eliminate the vibrations of the hoisting ropes, to compensate for possible unevenness in the degree of tension of these ropes and to eliminate possible vibrations of the lower beam 2 relative to the vertical axis of the suspension. The balancer 7 is an equal-shouldered weather vane with a central axis, to the ends of the shoulders of which the ends of the ropes are fastened on the axes, each arriving at its opposite ends from the attachment point on the cable drum 8 of the trolley 5, having previously gone through the storage path.

The storage path of each rope with one cable drum of the load-lifting mechanism of the cargo truck: drum - lower crosshead block - upper crosshead block - lower crosshead block - upper crosshead block - ... - upper crosshead block - balancer arm.

With high reliability requirements, that is, when working with particularly dangerous goods, it is possible to use the four-rope storage scheme of the Tashkinov load-gripping device, that is, if there are two identical load-lifting mechanisms on the crane truck, which allows you to combine two two-rope load-lifting devices of Tashkinov, at we get two “face-ropes”, that is, one face inside the other.

Thus, in the assembled and suspended state, the Tashkinov load-gripping device is a volumetric cylindrical body with a side face in the form

a seam reinforced with ropes between the fixed (supporting) upper and lifting lower disks (traverses) with a variable height of the side face when tensioning or weakening the ropes

The lifting device operates as follows.

The load-lifting mechanism of the truck 5 of the crane 6 by means of the mounting unit 4 is suspended load gripping device. The blocks of the upper beam 1 and lower beam 2 are stored in a single rope system.

The load gripping device is placed above the transported cargo, connected to the load gripping body and transported in a predetermined direction.

Thus, the proposed technical solution, which is a bulky tackle truck with a rigid cylindrical shape when suspended from a crane, can significantly increase the reliability and rigidity of the structure.

Claims (1)

A load gripping device comprising a load trolley with a cargo drum and a lower beam suspended on ropes enveloping the blocks mounted on it, characterized in that a load-lifting member is located on the lower beam, and the device further comprises an upper beam suspended by the attachment point to the load-lifting mechanism, with the blocks and balancer mounted on the upper traverse that envelope the ropes of the lower traverse, while the ropes are fixed at one end on a cargo drum, and the blocks of the upper and The traverses are placed symmetrically relative to each other in a circle or ellipse.