RU237342U1 - CONTINUOUS SHIP LOADING MACHINE BASED ON A PORTAL CRANE - Google Patents

Abstract

The utility model consists of a gantry crane with a continuously operating machine attached to it—a lifting and telescopic boom equipped with a belt conveyor system and consisting of two connected sections: a fixed section, pivotally mounted to the bottom of the crane gantry, and a movable section, moving along guides within it and equipped with a hook attachment for coupling with the gantry crane boom. The proposed technical solution enables the use of gantry crane mechanisms to control all boom movements, eliminating the need for a separate support and running gear and a number of associated mechanisms. The technical result is the creation of a universal, high-performance shiploading machine based on a gantry crane, capable of handling bulk cargo, both packaged and unpacked.

Description

The utility model relates to the field of lifting and transport engineering, namely to ship loading machines designed for loading the holds of dry cargo ships with bulk material (grain, coal, mineral fertilizers, etc.). Continuous-action machines are known that include fixed and movable parts of a telescopic boom with roller supports supporting the belt and a support and running metal structure (portal, frame, truss) on pneumatic wheels or rails (SU1093635A1, published 23.05.1984; SU421587A1, published 30.03.1974). The disadvantages of these devices are the presence of their own support and running metal structure, as well as the need to equip the machine with a mechanism for changing the boom reach.

The closest prototype of the utility model in terms of its technical essence and purpose is the device represented by patent SU 1184773 A1, IPC B65G 67/60. The device, selected as the prototype, possesses similar design features to the proposed technical solution and comprises a mobile portal with a lifting and telescopic boom secured to it by hinges and jacks. The boom comprises a system of two interconnected truss structures equipped with belt conveyors: a fixed fixed section and a movable section that reciprocates along guides within it. Unlike the prototype, the proposed utility model utilizes the support and running structure of a portal crane and its main mechanisms to secure the continuous-action machine and control its movements.

The technical solution will increase the throughput capacity of the sea cargo front of universal transshipment complexes.

To achieve the specified result, the following set of essential features is used.

A continuous-action ship loading machine based on a portal crane, including a lifting and telescopic boom consisting of a fixed and a movable section, each section of which is made in the form of a spatial-rod structure and equipped with a belt conveyor, while the fixed section is designed with the possibility of hinged attachment to the lower part of the portal of the portal crane and is equipped with a receiving hopper, while the movable section is equipped with a mount for the hook grab of the portal crane

The technical result provided by the given set of features is an increase in the intensity of vessel loading.

A comparison of the proposed device and the prototype revealed that the stated objectives are achieved through a novel combination of features, demonstrating that the proposed utility model meets the patentability criterion of "novelty." Conversely, an information search conducted in the field of handling equipment revealed no specific distinguishing features of the utility model, allowing us to conclude that it meets the "inventive step" criterion.

The essence of the utility model is explained by drawings, where

Fig. 1 shows a portal crane with a fixed boom of a continuous-action ship loading machine, general view;

Fig. 2 – hinged mount to the crane portal, side view;

Fig. 3 – hinged mount to the crane portal in a horizontal position, section A-A;

in fig. 4 – node I in Fig. 2;

in Fig. 5 – node II in Fig. 3.

The continuous-action machine includes an inclined telescopic boom consisting of a fixed 1 and a movable 2 section. Each boom section is made in the form of a spatial rod structure and is equipped with a belt conveyor 3, covered with a rigid casing 4 on the fixed section and a flexible casing 5 on the movable section to protect the load from precipitation and wind.

The fixed section of the boom is secured to the portal of the gantry crane 6 using hinges 7 and is equipped with a receiving bin 8, as well as special guides, for example in the form of rollers, for moving the movable section within its structure.

The movable section, in turn, is equipped with a hook mount 9 to enable its extension by a gantry crane and is equipped with a telescopic loading device 10 to reduce the height and speed of fall of bulk material into the ship's hold.

The boom tilt at its extreme positions is secured by special rubber dampers 11, installed at the bottom of the portal and the counter-part on the hinge itself. The dampers are required to set the shiploader boom to its parking position 12.

The continuous-action machine does not have its own support and running metal structure and is not equipped with its own mechanisms, with the exception of the presence of two belt conveyor drives.

The ship loading machine works as follows.

The continuous-action machine awaits loading operations in the mooring position 12, ensuring the safe approach and mooring of vessels at the berth. The tilt of the device in the mooring position is achieved solely by the dead weight of its structural components – supported by dampers 11, the boom is secured at an angle and does not require constant support from the gantry crane's hook. This allows the gantry crane to independently handle other types of cargo while waiting for bulk cargo loading operations.

Before loading bulk cargo, the gantry crane hook is attached to the grapple 9 on the movable section, whose axis, in the parking position 12, corresponds to the minimum reach of the gantry crane. By increasing the boom reach, the gantry crane extends the movable section 2 of the machine's boom and, consequently, moves its center of gravity away from the axis of rotation, causing the boom to rotate freely clockwise. The section's travel distance is limited by the maximum reach of the gantry crane 13. Returning the boom to its original (parking) position is performed in a similar manner in reverse order, with the boom rotating counterclockwise.

During loading operations, the vehicle moves along the berth in conjunction with the gantry crane 6 along a rail track. Bulk cargo from the terminal's cargo areas is fed into the receiving bin 8, for example, using a border belt conveyor with a mobile belt-loop loader. Alternatively, grabs, mobile inclined conveyors, stackers, and other loading equipment capable of unloading cargo from above the bin are also used. From the receiving bin, the bulk cargo is transferred to the belt conveyor of the fixed section 1, then transferred to the conveyor of the mobile section 2 and into the telescopic loading device 10, through which it is discharged into the vessel's hold. The lowering depth of the telescopic loading device 10 is adjusted relative to the position of the vessel's hold bottom 14, ensuring a minimum drop height of the cargo into the hold to reduce dust emissions.

Attaching a continuous-action machine to a gantry crane will increase the intensity of ship loading at the pier, including through the possibility of automating loading operations.

In the future, this technical solution is expected to be recommended for use in sea and river ports of the Russian Federation. The above allows us to conclude that the utility model meets the "industrial applicability" criterion.

The utility model was developed with the participation of specialists from the Department of Port Operation and Automation at the Admiral S.O. Makarov State University of Maritime and Inland Shipping during research and development.

Claims (1)

A continuous-action ship loading machine based on a portal crane, including a lifting and telescopic boom consisting of a fixed and a movable section, wherein each section is made in the form of a spatial-rod structure and is equipped with a belt conveyor, wherein the fixed section is designed with the possibility of being hinged to the lower part of the portal of the portal crane and is equipped with a receiving hopper, wherein the movable section is equipped with a mount for the hook grab of the portal crane.