SU1240727A1 - Travelling gantry crane - Google Patents

Description

The invention relates to lifting and transporting devices and can be used in the loading and unloading operations, including long loads in enterprises and warehouses of the construction industry.

The purpose of the invention is to improve the operating conditions by eliminating the transfer of vibrations to vibrations from the operation of the mechanisms of the cargo trolley to the driver's cab.

Figure 1 schematically shows a gantry crane; figure 2 - section aa in figure 1; on fig.Z - section BB in figure 1; figure 4 is a section bb In figure 1;, figure 5 is a view of D in figure 1.

The gantry crane includes the following basic elements: span structure 1, two supports 2, two support beams 3, four running trolleys 4 with movement mechanisms, cargo trolley 5, driver's cab 6, additional driver 7 with driver's cab suspension 6, traverse freighter 8, two shock absorbers 9, rails 10 and 11, and additional rail 12, guide 13, travel wheels 14, pillars 15 and 16, support rollers 17, load winch 18, plate, foot 19, rack 20, support rollers 21.

The span structure 1 is rigidly mounted on supports 2, provided with rails 10 and 11 and an additional rail 12, two of which (10 and 12) are located on the upper face, and two on the lateral faces of the span and the guide 13 span structure. The superstructure is intended for installation and movement of the cargo carriage 5 and the auxiliary carriage 7 with cab suspension 6 on it.

The supports 2 are designed to install the span 1 at a certain height from the ground, providing the necessary height for lifting the load.

The support beams 3 are designed to install the supports 2 and are installed each on two undercarriage 4 with crane movement mechanisms.

The cargo carriage 5 is made two-console and is installed with the traveling wheels of the movement mechanism 14 on the rail 10 and is equipped with racks 15 and 16 with support rollers 17 interacting with the rails 11 that receive the load moment. On one console of the trolley 5, cargo winch 18 is installed, and on the other, a platform 19 rigidly connected to the frame of the trolley, on which are installed two cabinets with electrical equipment for controlling the cargo winch and the trolley movement mechanism and two cabinets with sets of resistances.

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Suspension of platform 19 with electrical equipment cabinets installed on it and resistances on the cantilever opposite to the cargo winch console creates a moment opposite to the load moment, partially reducing the reaction to the span rail 11, and reducing the twisting moment acting on the span structure. The cargo carriage 5 is designed to mount the cargo winch 18 on it and to move it along the span, as well as to simultaneously move the additional carriage 7, on which the suspension with the driver's cab 6 is mounted by means of shock absorbers.

The driver's cab 6 is rigidly suspended on the console of an additional trolley 7 mounted by the traveling wheels 14 on the additional rail 12 and equipped with a rack 20 with support rollers 21 cooperating with the guide 13, which receives tilting moment from the force of the cab 6.

The additional trolley with cab suspension 6 does not have its own movement mechanism and moves along the superstructure due to the movement of the cargo trolley 5 by means of absorbing links g connecting them 9.

The suspension with the driver's cab and the cargo winch are located on opposite sides of the superstructure.

- Gantry crane works as follows.

The cargo carriage 5 moves along the superstructure and moves the additional carriage 7 connected with it by shock absorbing rods 9, on which the suspension is mounted with the driver's cab 6. The movement of the trolley and the cargo winch is controlled from the driver’s cab.

Due to the installation of cargo and additional carriages on different rails, the vibrations from the mechanism of movement of the cargo trolley and cargo winch are quenched by the crane span and are not transferred to the operator's cabin.

The damping rods 9 also absorb the dynamic vibrations caused by the movement mechanism of the trolley and the mechanisms of the load winch, which significantly improves the ergonomic conditions of the crane driver.

The placement of the suspension with the cab 6 of the driver from the side of the superstructure, opposite to the placement of the console of the cargo winch, creates a moment that does not provide a protective moment for the load moment and reduces the moment of twisting of the superstructure.

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Claims (1)

Gantry crane containing supports, a span connected to them, made with a guide on one of its side faces and with rails, one of which is mounted on its upper face, and the other two on the side faces, mounted with the help of running wheels on the upper rail faces and support rollers on the rails of the side faces a cargo trolley with a movement mechanism and a load winch cantilever placed on one side of the span and a suspension placed on the other side of the span with the driver’s cab In that, in order to improve operating conditions, it is equipped with an additional rail mounted on the upper edge of the superstructure, mounted on it with the help of running wheels, an additional trolley with support rollers placed under the rail with the possibility of interaction with it, and shock absorbing rods with which freight and additional carts are interconnected, while the suspension with the driver's cab is mounted on an additional cart. SU, „, 1240727 F ig. 1