RU195276U1 - CONSOLE CRANE FOR INSTALLING SUPPORT ADJUSTERS ON THE DEPARTURE MORE THAN 18m - Google Patents

Abstract

The utility model relates to the field of bridge construction, namely to the construction of temporary and low-water bridges using cantilever cranes. The SRK-50 cantilever crane is known, the drawback of which is that it can be used to install a support superstructure at a reach of up to 18 m. To install a superstructure of supports at a distance of more than 18 m from the edge of the constructed structure, the use of floating cranes is required, the assembly and operation of which is labor-intensive. The task to which the claimed utility model is directed is the ability to install and crane СРК-50 of superstructure of supports at a reach of more than 18 m. This problem is solved due to the fact that winches are installed on the sides of the main beam of the console crane СРК-50 on top of the technological beam to engage the lower part of the superstructure of the support, and hinged to the head of the crane console a lattice boom is attached, which is connected via a cable to a hoist for raising and lowering the lattice boom, and a winch is installed on the base part of the crane to engage the upper part of the support superstructure. To engage the lower part of the support superstructure (the width of which can reach 8 m), electric winches are installed on the edges of the technological beam, which in turn is attached to the main beam of the cantilever crane. more than 18 m from the edge of the constructed bridge structure without the use of a floating crane. The order of installation of the support is as follows: slinging the superstructure of the support horizontal position; transportation of the support superstructure with the SRK-50 crane to the installation site; lowering the trellised boom of the hoist to raise and lower the trellised boom to the required reach; translation of the support superstructure to the vertical state by etching the winch cables to engage the lower part of the support superstructure; installation of the support superstructure on the grill foundation. the extension of the support superstructure. Thus, the claimed technical result, which consists in the possibility of installing the support superstructure at a distance of more than 18 m, will reach t

Description

The utility model relates to the field of bridge construction, namely to the construction of temporary and low-water bridges with the use of jib cranes.

Known console crane SRK-50 (1. Guide to the design and operation of the crane SRK-50), designed for installation in the span of the bridge of metal spans (collapsible and integrally transported) with a total weight of up to 34.4 m with a laid bridge canvas with a total weight up to 55 t and reinforced concrete spans weighing up to 70 t, length up to 23 m and weighing up to 85 t, length up to 19 m, for removing spans from railway platforms and bogies, as well as for installing support blocks at a reach of up to 18 m.

The SRK-50 jib crane (Fig. 1 pos. 1) consists of a base part (Fig. 1 pos. 2), a main beam (Fig. 1 pos. 3), flexible rods, a running gear, a platform for a counterweight, a counterweight, and chain hoists , three winches, electrical equipment and a power plant.

The disadvantage of this technical device is that it can be used to install a support superstructure (Fig. 1, item 4) at a reach of up to 18 m. To install a support superstructure (Fig. 1 item. 4) at a distance of more than 18 m from the edge of the constructed structure (Fig. 2 item 5) requires the use of floating cranes, the assembly and operation of which is labor-intensive.

The task to which the claimed utility model is directed is the possibility of installing crane SRK-50 (Fig. 1 pos. 1) of the add-on supports (Fig. 1 pos. 4) at a reach of more than 18 m.

This problem is solved due to the fact that to the main beam (Fig. 1 pos. 3) of the SRK-50 jib crane from above, winches are installed on the sides to engage the lower part of the support superstructure (Fig. 1) pos. 6), and a trellised boom (Fig. 1 pos. 8) is pivotally attached to the head of the console (Fig. 1 pos. 7), which is connected via a cable to the winch raising and lowering the trellised boom (Fig. 1 pos. 9) and a winch is installed on the base part of the crane (Fig. 1, pos. 2) to engage the upper part of the superstructure of supports (Fig. 1, pos. 10). All of the above winches are recommended to be installed with an electric drive and a control output to them on a separate console.

To engage the lower part of the support superstructure (the width of which can reach 8 m), electric winches are installed on the edges of the technological beam (Fig. 1, pos. 11), which in turn is attached to the main beam of the jib crane (Fig. 1, pos. 3). To install superstructures of supports of different heights, the attachment of the technological beam (Fig. 1, item 11) is necessary with the possibility of moving along the main beam. As a technological beam (Fig. 1, item 11) under the winch, you can use short racks 6 meters long from the property of the REM-500 trestle.

The technical result provided by the given set of features is the installation of add-on supports on the foundation grill (Fig. 2 pos. 12) at a distance of more than 18 m from the edge of the constructed bridge structure (Fig. 2 pos. 5) without the use of a floating crane.

The essence of the utility model is illustrated by drawings, which depict:

in FIG. 1 shows the equipment of a jib crane:

pos. 1 - console crane SRK-50;

pos. 2 - the base part of the crane;

pos. 3 - the main beam of the crane;

pos. 4 - a superstructure of a support;

pos. 6 - winch for engaging the lower part of the superstructure of supports;

pos. 7 - the head of the console;

pos. 8 - trellised arrow;

pos. 9 - winch raising and lowering the trellised boom;

pos. 10 - winch for engaging the upper part of the superstructure of supports;

pos. 11 - technological beam;

in FIG. 2 shows the installation of add-on supports with a jib crane:

pos. 5 - edge of the constructed bridge structure;

pos. 12 - foundation grillage.

A utility model is implemented as follows. To the main beam (Fig. 1, pos. 3), without changing its structural elements, the technological beam (Fig. 1, pos. 11) is attached in a place that allows the lower part of the support superstructure to be hooked (Fig. 1, pos. 4) in a horizontal position as shown in the figure 1. To the head of the console of the crane (Fig. 1 pos. 7), a lattice boom (Fig. 1 pos. 8) is hinged with a system of cables and winches for raising and lowering the boom and engaging the upper part of the support superstructure.

The procedure for installing the support is as follows:

slinging of the superstructure of the support (Fig. 1, item 4) in a horizontal position;

transportation of the support superstructure by crane SRK-50 (Fig. 1, pos. 1) to the installation site;

lowering the trellised boom (Fig. 1, pos. 8) with a winch to raise and lower the trellised boom (Fig. 1 pos. 9) to the required reach;

translation of the support superstructure into a vertical state due to the removal of winch cables to engage the lower part of the support superstructure (Fig. 1, item 6);

installation of the support superstructure (Fig. 1, item 4) on the foundation grill (Fig. 2, item 12);

unloading of the superstructure of the support and the departure of the crane SRK-50 for the installation of the superstructure.

In view of the increase in mass of the SRK-50 jib crane, it is necessary to first calculate and increase the mass of the counterweight, taking into account the weight of the support superstructure and the necessary boom extension, as well as to strengthen the railway track under the jib crane.

Thus, the claimed technical result, which consists in the possibility of installing the superstructure of the support at a distance of more than 18 m, has been achieved.

Used sources

1. Guide to the design and operation of the crane SRK-50. M .: Military Publishing, 1974 - 42 p.

Claims (1)

Cantilever crane for installing support superstructures at a reach of more than 18 m, consisting of a base part, a main beam, flexible rods, a running gear, a platform for a counterweight, a counterweight, chain hoists, three winches, electrical equipment and a power plant, characterized in that to the main beam of a console crane from above, winches are installed on the sides through the technological beam to engage the lower part of the support superstructure, and a trellised boom is pivotally attached to the head of the crane console, which is connected through the cable to the hoist for raising and lowering lattice boom, and a winch is installed on the base of the crane to engage the upper part of the support block.

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