RU2652538C1 - Dismountable mobile traveling gantry crane - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to hoisting and transport engineering, namely to the construction of gantry cranes. Proposed gantry crane is a collapsible-mobile one-beam bridge with two consoles, struts connected respectively with the bridge consoles and crane supports. Each strut is equipped with a tensioning device and is made of two parts, one of which is articulated to the console, and the other is rigidly supported. Said parts of the strut are interconnected by a tensioning device including two pairs of eyelets with elliptical grooves rigidly fastened to the respective parts of the struts by two half-collars placed in elliptical grooves of the brackets and fixed to respective pairs of brackets, and a wedge located between the flat bevels formed on the inner surface of the half-sleeves. Above wedge is equipped with a drive for its displacement. In addition, the crane contains single-column supports with chain extensions, the lower part of each of the supports is connected to the undercarriage by a flange connection, and the upper part of the supports is bolted to a single-beam bridge, a chain hoist hinged on a single-girder bridge, a cargo shelf.

EFFECT: it is possible to disassemble and assemble the gantry crane, transport it with the use of an additional technical means, and carry out loading and unloading operations on platforms with any bearing surface.

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Description

The invention relates to hoisting and transport engineering, and in particular to structures of gantry cranes.

Known gantry crane (copyright certificate for the invention of the USSR No. 1685858 MPK В66С 19/00 dated 10/23/1991 bull. No. 39) [1], containing a single-beam bridge with two consoles, supports, rigidly connected to the bridge and pivotally with the crane chassis , and struts associated respectively with the bridge consoles and crane supports, each strut is equipped with a tension device and is made of two parts, one of which is pivotally connected to the console, and the other is rigidly supported, the indicated strut parts are interconnected by a tension device, including two pairs of pro tires with elliptical grooves, two half-bushes rigidly fixed on the corresponding parts of the struts, placed in elliptical grooves of the brackets and fixed on the corresponding pairs of brackets, and a wedge placed between flat bevels made on the inner surface of the half-bushes, and the wedge is equipped with a drive for moving it.

The disadvantage of this device is the inability to disassemble and assemble the gantry crane, its transportation using additional technical means, the inability to carry out loading and unloading operations on sites with any bearing surface.

The technical result is aimed at achieving the ability to disassemble and assemble the gantry crane, its transportation using additional technical means, the ability to carry out loading and unloading operations on sites with any bearing surface.

The technical result is achieved by the fact that from the composition of the gantry crane containing a one-beam bridge with two consoles, supports rigidly connected to the bridge and pivotally with the chassis of the crane, and struts connected respectively to the console of the bridge and the crane supports, each strut is equipped with a tension device and made of two parts, one of which is pivotally connected to the console, and the other is rigidly with a support, and these parts of the strut are interconnected by a tensioning device, which includes two pairs of eyes with elliptical grooves, rigidly fixed on the corresponding parts of the struts, two half-sleeves, placed in elliptical grooves of the brackets and fixed on the corresponding pairs of brackets, and a wedge placed between flat bevels made on the inner surface of the half-sleeves, and the wedge is equipped with a drive for moving it, supports rigidly connected to the bridge and pivotally the crane chassis, and additionally introduced single-column bearings with chain extensions, the lower part of each of the supports is connected to the chassis by a flange connection, and the upper part The supports are bolted to a single-beam bridge, a chain hoist pivotally mounted on a single-beam bridge, a cargo shelf.

Comparative analysis with the prototype shows that the proposed collapsible gantry crane is distinguished by a change in the design of the elements, namely the exception of the supports rigidly connected to the bridge and pivotally with the chassis of the gantry crane, and the introduction of additional elements into it: one-post supports with chain extensions, the lower part each of the supports is flanged to the chassis, and the upper part of the supports is bolted to a single-beam bridge, a chain hoist pivotally mounted on a single-beam mos y, the cargo shelf.

Changing the design of the elements of the gantry crane and the introduction of new elements in the design will allow disassembling and assembling the gantry crane collapsible-mobile, its transportation using additional technical means, carry out loading and unloading operations on sites with any bearing surface and allows us to conclude that the claimed device meets the criterion : “Significant differences.”

The device is illustrated by drawings:

in FIG. 1 shows a gantry crane folding and mobile (general view), where 1 is a single-beam bridge, 2 is a support, 3 is a running gear, 4 is a strut, 5 is a chain hoist, 6 is a cargo shelf; in FIG. 2 shows a gantry crane collapsible and mobile (top view); in FIG. 3 shows a gantry crane collapsible-mobile (side view).

The collapsible mobile gantry crane contains a single-girder bridge 1 with two consoles, struts 4 connected respectively to the consoles of the bridge 1 and the supports of the crane 2, each strut is equipped with a tension device and is made of two parts, one of which is pivotally connected to the console, and the other is rigidly with a support 2, and these parts of the strut 4 are interconnected by a tensioning device, including two pairs of eyes with elliptical grooves, two half-sleeves rigidly fixed on the corresponding parts of the struts 4, placed in elliptical grooves of cro brackets and mounted on the respective pairs of brackets, and a wedge placed between flat bevels made on the inner surface of the half-bushings, the wedge being provided with a drive for moving it, one-post supports 2 with chain extensions, the lower part of each of the supports is connected to the chassis 3 by a flange connection, and the upper part of the supports is bolted to a single-beam bridge 1, a chain hoist 5, pivotally mounted on a single-beam bridge 1, a cargo shelf 6.

The collapsible mobile gantry crane operates in two modes: in the loading and unloading operation mode from the vehicle body to the cargo shelf of the collapsible mobile gantry crane, in the loading and unloading operation mode from the body of one vehicle to another vehicle.

In the first mode of operation, the assembly of a collapsible mobile gantry crane begins with the fastening of the supports 2 to the bridge 1 by means of a bolt connection, while the force of the bridge's own weight causes it to deflect. When the struts 4 are tensioned to the supports 2 by pulling together parts of each strut with tensioning devices, the bridge console 1 transfers forces causing the bridge 1 to bend upward, which ensures prestressing of the crane bridge 1, which facilitates the span of the bridge 1. The lower part of the supports 2 is connected flange connection to the chassis 3. To obtain the necessary resistance to loads, the supports 2 are fixed in the upper part using two chain braces to the chassis 3. To ensure overall structural rigidity and transportation of goods and cargo used shelf 6 associated bolting with supports 2 at a height greater than the level of the loading platform to unload the vehicle. Dismantling of the collapsible-mobile crane is carried out in the reverse order. Using a chain hoist 5 pivotally mounted on a single-beam bridge 1, the load rises above the platform of the vehicle and lowers onto the cargo shelf 6 and then moves to the storage area with a crane.

In the second mode of operation, similar operations are carried out as in the first mode, while the cargo shelf 6 is not used, the collapsible gantry crane with the load lifted moves in the direction of the other vehicle and the load is lowered into the body of the overloaded vehicle, thereby in both modes of operation it is possible to disassemble and assemble a collapsible mobile gantry crane, its transportation using additional technical means, the ability to carry out loading and unloading Started on any supporting surface sites.

Thus, it becomes possible to disassemble and assemble the gantry crane, its transportation using additional technical means, the ability to carry out loading and unloading operations on sites with any bearing surface.

Claims (1)

The gantry crane is collapsible and mobile, containing a single-beam bridge with two consoles, struts connected respectively to the bridge consoles and crane supports, each strut is equipped with a tension device and is made of two parts, one of which is pivotally connected to the console, and the other is rigidly connected to the support, moreover, these parts of the strut are interconnected by a tensioning device that includes two pairs of eyes with elliptical grooves, two half-sleeves rigidly fixed on the corresponding parts of the struts, placed in the elliptical grooves of the bracket new and fixed on the respective pairs of brackets, and a wedge placed between flat bevels made on the inner surface of the half-sleeves, the wedge being provided with a drive for moving it, characterized in that one-post supports with chain extensions are additionally introduced, the lower part of each of the supports is connected by a flange connection chassis, and the upper part of the supports is bolted to a single-beam bridge, a chain hoist pivotally mounted on a single-beam bridge, a cargo shelf.

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