RU2323870C1 - Cross bar for relocating and performing assembling and linking operations of large size items - Google Patents

Abstract

FIELD: mechanics.

SUBSTANCE: cross-bar consists of supporting girder with link attached thereto and slings equipped with lifting knots and adjusted screw insertions. The slings have common fixing points on the supporting girder, each of points having not less than two slings. Lifting knots are made as plates with balancing holes.

EFFECT: required tilt angle of device is achieved at hoisting - relocation and assembly-connecting operations.

2 cl, 2 dwg

Description

The present invention relates to lifting and handling devices for carrying out operations on transfer and installation and docking operations, requiring adjustment of the angle of inclination of portable (joined) special products, for example, products of rocket and space technology.

Known and closest in technical essence to the proposed device crosshead (patent No. 2263065, IPC ВСС 1/12), which was selected as a prototype. The traverse contains a supporting beam with an earring mounted on it. On the supporting beam, balancing sockets are made, in which slings are fixed with rigging units made on them for fastening the portable product. The earring consists of an eye and a shank connected to the supporting beam by means of a hinge. A stopper is installed on the shank below the hinge connecting the shank with the supporting beam, with the possibility of its interaction with the fixing socket made on the supporting beam. An adjustable screw insert with a lock is installed on the earring between the eye and the shank. After hitching the traverse onto the hook, the earring is rigidly fixed with a stopper relative to the supporting beam, which provides a certain angle of inclination of the lifted product. The design of the traverse laid the principle of adjusting the angle of inclination of the product, based on a change in the length of the suspension of the traverse, while moving the center of mass of the product occurs to a position where the moment from the weight of the product relative to the vertical passing through the axis of rotation of the traverse on the crane hook is balanced by the moment from the weight of the inclined traverse . In this case, the angle of inclination of the transferred (joined) product (hereinafter referred to as the angle of inclination) is adjusted only in the vertical plane of the supporting beam, i.e. in the longitudinal direction.

The design of this traverse has several disadvantages.

1. There are no structural elements that allow you to adjust the angle of inclination of the transferred (joined) product in a plane perpendicular to the vertical plane of the supporting beam, i.e. in the transverse direction. This may lead to the inability to carry out installation and docking operations due to skew in the mating docking elements or damage to the docking nodes due to the occurrence of an unacceptable load in them.

2. The principle of adjusting the angle of inclination of the portable (abutting) product, laid down by the construction of the traverse, is based on balancing the moments from the centers of mass of the traverse and the product relative to the vertical axis of the suspension of the traverse, so the mass of the product and the traverse must be comparable.

3. The inconvenience in operation due to the fact that the design of the crosshead requires additional devices (stepladders, lifts, etc.) to facilitate access to the adjustable screw insert located in the upper part of the crosshead.

The aim of the present invention is to eliminate these drawbacks and provide the desired angle of inclination of the product when performing lifting, handling and installation and docking operations.

This goal was achieved due to the fact that the crosshead is equipped with slings having common mounting points on the supporting beam, and adjustable screw inserts, and the lifting units are made in the form of plates with balancing holes. At the same time, at least two slings are installed at each attachment point, and slings are provided with adjustable screw inserts, which provide adjustment of the product tilt angle in the required plane.

The essence of the invention is illustrated by drawings, in which Fig. 1 shows a general view of a traverse, all slings of which are equipped with adjustable screw inserts, and Fig. 2 is a general view of a traverse, in which slings are provided with adjustable screw inserts, providing adjustment of the product tilt angle in the required plane.

The traverse contains a supporting beam 1 with an earring 2 mounted on it and slings 3 provided with rigging units 4. The slings 3 have common mounting points on the supporting beam, in each of which at least two slings are installed. The lifting nodes 4 are made in the form of plates with balancing holes 5, with the help of which the beam is fixed to the product and the “rough” adjustment of its tilt angle is carried out. For "accurate" adjustment of the angle of the product slings are equipped with adjustable screw inserts 6.

If you need to adjust the angle of the product only in one plane of the suspension, the traverses with adjustable screw inserts provide those slings that fully provide for the adjustment of the angle of the product in a given plane (figure 2). If it is necessary to regulate the angle of the product in mutually perpendicular planes of the suspension axis of the beam, adjustable screw inserts provide all the slings of the beam (Fig. 1).

The proposed device operates as follows.

The design of the traverse laid the principle of regulating the angle of inclination of the product, based on a change in the length of the slings, therefore, based on the passport alignment of the mass of the product and the required angle of inclination, the necessary lengths of the slings are determined by calculation. In the initial position, the traverse earring 1 is thrown onto the crane hook (in Fig. 1, the crane hook is conventionally not shown). Slings are installed and fixed on the attachment points of the portable (joined) product in the corresponding balancing holes 5 of the rigging nodes 4 and, thus, carry out a “rough” adjustment of the length of the slings. The final ("thin") adjustment of the length of the slings is carried out using adjustable screw inserts 6, changing the length of which the maintenance staff achieves the desired angle of the product 7. If necessary, after lifting the product, adjust (on the lowered product) the angle of the product by changing the length of the adjustable screw inserts.

Thus, the proposed device provides the ability to accurately adjust the angle of inclination of the portable (docked) product in mutually perpendicular planes of the suspension axis of the traverse, which simplifies installation and docking operations, reduces the time it takes to complete them, reduces the likelihood of damage to the docking assemblies and eliminates the possibility of deformation of the product. The design of the device allows it to be used when working with large-sized products and with products having a large mass, while the control mechanisms are located in an easily accessible place for service personnel.

From the sources of information known to the authors, the applicant is not aware of the traverse with the totality of the hallmarks of the claimed object.

The experiments on prototypes of traverses manufactured at the enterprise confirmed the correctness of the solution described in the description.

Claims (2)

1. Traverse for carrying and carrying out installation and docking works of large-sized products, containing a load-bearing beam with an earring installed on it and having common mounting points on the load-bearing beam of the slings with rigging nodes, characterized in that the slings are equipped with adjustable screw inserts, and the rigging nodes are made in in the form of plates with balancing holes. 2. Traverse according to claim 1, characterized in that at least two slings are installed at each attachment point.

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