RU2241633C2 - Shipboard crane - Google Patents

Abstract

FIELD: shipboard load handling devices.

SUBSTANCE: proposed shipboard crane has housing 1 hinge connected with loading boom consisting of main section 6 connected by hydraulic cylinder with housing, fly jib 7 hinge connected by hydraulic cylinder with main section on end of which rotary end 12 rotary case 10 with sheaves are installed on one axle. Said sheaves are used to pass load and carrying cables to end. Carrying cable is made for passing under rollers of load car and reeving in receiving sheave. Two-drum load winch 3 with load and carrying cables and self-contained drive hydraulic motors and follow-up winch 5 are mounted on main section. Load hanger for lifting and lowering of load is connected by load cable with rotary end 12 for removal. Carrying cable can be disconnected from end and fastened, after reeving on receiving sheave, on load car provided with winch and made for connection of load cable.

EFFECT: improved reliability and safety of load handling at rolling.

2 dwg

Description

The invention relates to ship lifting devices.

Known ship cranes [1], containing a hull, articulated cargo boom, boom lifting cylinders, single-drum cargo winch, which provide work only in one mode - lifting and moving goods along the deck, from the vessel to the berth or other vessel in the moored position ( contact way).

Known crane devices with tracking [2] for shock-free transshipment of cargo from one vessel to another during rolling, containing a cargo boom with a cargo and tracking winch.

A disadvantage of the known devices is that the servo winch rope must be secured to a bracket on the deck of the receiving vessel during each cargo operation.

Known devices for transferring goods to the sea [3, 4] (ship ropeways), containing masts mounted on the transmitting and receiving vessels, connected by a support rope, along which the freight cart moves, and a traction rope, which informs the freight cart in the desired direction. The carrier and traction ropes are wound on appropriate winches, which must continuously adjust the length and tension of the working branches of the ropes in accordance with the change in the distance between the vessels. The reasons that impede the achievement of the technical result indicated below when using known devices include their bulkiness, as well as the need for additional equipment on the receiving vessel.

Known ship crane [5], containing a hinge pivotally connected with a cargo boom, consisting of a main section connected by a hydraulic cylinder to the hull, and a rotary knock, a cargo suspension, a double-drum cargo winch with a cargo and carrying ropes and independent drive hydraulic motors, as well as in the aforementioned the crane has pulleys that carry cargo and load ropes into the knock, the last of which is made with the possibility of passing under the rollers of the cargo trolley and storing at the receiving unit, and a tracking winch.

The closest in design, selected as a prototype, is the aforementioned ship crane [5].

The reasons that impede the achievement of the technical result indicated below when using a known crane include the fact that the crane can work only in one mode: traverse transfer of goods from one object to another.

The claimed invention is directed to the creation of a ship crane, which allows for the transfer of goods in a moored position from one vessel to another or from a vessel to a berth and back (by contact) without tracking, as well as tracking the vertical component of the mutual movement of the boom and the deck of the receiving vessel , and the movement of goods in a traverse way in the parking lot, or on the go when the vessels move in parallel courses at a distance of 30-60 m from each other in conditions of sea waves, and ensuring safety transfer cargo. The creation of such a crane will reduce both the number of mechanisms placed on deck and their weight and cost, as well as increase the efficiency of fishing vessels.

The technical result in the implementation of the invention is the ability to transfer cargo in three modes: crane operation mode, crane tracking mode and traverse load transfer mode, while ensuring the convenience and safety of transferring goods to the sea and eliminating the need to equip ships with additional equipment.

The specified technical result in the implementation of the invention is achieved by the fact that a known ship crane containing a hinge pivotally connected to a cargo boom, consisting of a main section connected by a hydraulic cylinder to the body, and a rotary knock, a cargo suspension, a double-drum cargo winch with a cargo and carrying ropes and independent driven hydraulic motors, pulleys that carry cargo ropes and carrier ropes to the bottom, the last of which is made with the possibility of passing under the rollers of the cargo trolley and storing them on the unit, and a follower winch, while the crane is equipped with a pivotally connected hydraulic cylinder with a main section with a trunk, on the end of which a pivoting sleeve with the indicated pulleys and a specified pivoting nose are connected to which the cargo suspension is connected with the possibility of lifting, for lifting and lowering cargo, and the carrier rope is made with the possibility of disconnecting from the nock and fastening after storage on the receiving unit to the cargo trolley, made with a winch and with the possibility of attachment to the cargo rope.

The design of the knock provides the possibility of the deviation of the cargo rope from a vertical position in the operation mode of the crane and the deviation of the cargo and carrier ropes by angles ± 30 ° from the horizontal when it is in the traverse transmission mode in the entire range of its movement in height above the deck.

Tracking winch provides:

- issuing a signal on the vertical mutual movement of the knock and deck of the receiving vessel in the operating mode of the crane with tracking when the sea is rough, and the rope of the tracking winch is held on the deck of the receiving vessel by an anchor-weight, lowered and raised by the tracking winch itself, without the need for special anchoring cargo;

- preparatory operations for the installation of the road for the implementation of the traverse transfer of goods and measuring the distance between the vessels.

The use of a double-drum winch allows the crane to perform both cargo operations in the normal mode and the movement of the cargo trolley between the vessels during its operation in the beam transfer mode.

In the study of the distinguishing features of the described crane, no similar known solutions were found regarding the use of the boom, the main section of which is articulated with a hydraulic cylinder with a trunk, on the end of which a pivoting sleeve with pulleys and a pivoting nose are connected to which is connected with a cargo cable with the possibility of removal of the suspension for lifting and lowering the load, and the carrier rope is made with the possibility of disconnecting from the nock and fastening after storage on the receiving unit to the cargo trolley made with a winch and with the ability to attach to the cargo rope.

A ship crane is shown in the drawings (FIG. 1 and FIG. 2).

Figure 1 presents a General view of the crane.

Figure 2 shows the operation of the crane in three modes: without tracking (figa), with tracking (fig.2b) and traverse transfer of goods (figv).

In the drawings are indicated:

1 - Case

2 - Cargo winch

3 - tension drum

4 - Cargo drum

5 - Tracking winch

6 - Main boom section

7 - Trunk

8 - Carrier Rope

9 - Cargo rope

10 - Swivel clip

11 - Cargo suspension

12 - Knock rotary

13 - Track winch rope

14 - Hydraulic cylinders

15 - Cabin

16 - Base

17 - Truck

18 - Receiving unit

19 - Cargo Anchor

20 - Transmitting vessel

21 - Receiving vessel

The ship crane (Fig. 1) includes a hull 1 mounted on the base 16, a cargo boom consisting of articulated main section 6 and a trunk 7, hydraulic cylinders 14, pivotally connecting the crane body 1 to the main section 6 and the main section 6 c with a trunk 7, a cargo winch 2, preferably mounted on the upper plane of the main boom section 6 and having two drums 3 and 4, and two independent hydraulic drive motors, a follower winch 5, preferably located on the side plane of the main boom section 6, mounted on one axis at the end of the trunk 7, a rotary knock 12 and a rotary yoke 10 with three pulleys conducting into the knock 12 cargo 9 and carrying 8 ropes, the cargo suspension 11 connected to the knock 12 by the cargo rope 9, the cabin 15.

The operation of the crane is as follows. Changing the boom - the main section 6 and the trunk 7 - is carried out using hydraulic cylinders 14.

Cargo winch 2 has two independent drums with hydraulic motors - cargo 4 and tension 3, from which cargo 9 and bearing 8 ropes go. The cargo drum 4 through the cargo rope 9 provides lifting and lowering of the cargo during cargo operations in the crane mode. The same drum during traverse transfer of goods is traction and provides movement of the cart 17 (pigv) between ships with a given speed. The tension drum 3 provides the tension of the support rope 8 with a predetermined force. The supporting rope 8 is used in the traverse transfer of goods and serves as a cableway to move the cargo carriage 17 along it.

The crane is equipped with a tracking winch 5, which provides:

- the issuance of a signal proportional to the mutual vertical movements of the knock 12 and the deck of the receiving vessel 21 in the operation mode of the crane with tracking when rolling adjacent vessels or the vessel relative to the pier;

- preparatory operations for the transfer of the receiving unit 18 with the cableway to the receiving vessel 21 in preparation for the traverse transfer of goods;

- measuring the distance between the vessels with the issuance of appropriate signals to both the crane operator and the wheelhouse of the transmitting vessel 20.

When the crane is tracking with a tracking winch 5, an anchor load 19 is lowered onto the deck of the receiving vessel 21, and the tracking winch 5 is put into tracking mode. The signal generated by the tracking winch 5 is added (or subtracted) with the signal received from the control handle of the cargo drum 4 in such a way that the relative movement speed of the bow 12 and the deck of the receiving vessel 21 is automatically superimposed on the speed of lifting and lowering the load. cargo. After the completion of the cargo operation, the anchor-cargo 19 is lifted by a tracking winch 5.

When preparing the crane for transferring goods in a traverse way, the cargo suspension 11 is removed, the bearing rope 8 is disconnected from the nock 12 and passed under the rollers of the trolley 17, then it is stored on the pulley of the receiving unit 18 and attached to the trolley 17, while the cargo rope 9 is also attached to the cargo trolley 17. The rope 13 of the tracking winch 5 is fixed on the receiving vessel 21. The receiving unit 18 with the supporting cable 8 along the rope 13 of the tracking winch 5 is pulled by an auxiliary line to the receiving vessel 21 and attached to the bracket or eye and the superstructure of the receiving vessel 21.

In the mode of traverse transfer of cargoes, the hydraulic system of the crane maintains the tension of the road with compensation for changes in its length during rolling and yaw of the transmitting 20 and receiving 21 vessels, as well as the movement of the trolley 17 along the road with an unstressed approach-departure relative to the vessels.

When moving the trolley 17 at the transmitting vessel 20, its speed is set only by the cargo drum 4, which ensures that the trolley 17 is kept at a constant distance from the transmitting vessel 20 when stopped, as well as an unstressed approach-departure. After the trolley 17 docked with the knock 12, the road tension is reduced, and the load (container) can be lowered, lifted, moved to the desired location on the deck by changing the boom extension and turning the crane. In this case, the load is connected to the trunk of the boom through a trolley 17 which is constantly docked with the nose 12, and the turn of the crane is limited by road ropes extending from the trolley.

When moving the trolley 17 at the receiving vessel 21, the hydraulic system of the crane provides synchronous rotation of the cargo 4 and tension 3 drums, with tracking changes in the length of the road, which makes it possible to keep the trolley 17 at a constant distance from the receiving vessel 21 when it stops, as well as an unstressed approach-departure. The descent-lifting of the cargo (container) on the receiving vessel 21 is carried out using a manual winch mounted on a cargo trolley 17.

Thus, based on the foregoing, the following conclusions can be drawn:

- The crane is intended for use in ship hoisting devices;

- for the claimed crane confirmed the possibility of its implementation using the known means described above;

- the advantage of the technical solution set forth in the present invention is that it can be used to operate in three modes: the operation of the crane without tracking, the operation of the crane with tracking and traverse transfer of goods.

Sources of information

Service cranes. Проспект фирмы.1.

Service cranes. Prospectus of the company.

2. Means of transferring cargo to ships at sea. / Andreeva L.N., Kiev A.V., Maslov A.E., Makhorin N.I., Sokolov G.S. / L .: Shipbuilding, 1973.

3. RU, patent No. 1497910, B 63 V 27/30, 07.27.99.

4. RU, patent No. 2053920, 63 V 27/30, 04/09/99.

5. Scientific and technical reviews “Modern foreign supply vessels and their equipment for the transfer of goods at sea”. Part two. Responsible for the release Yu.A. Chizhevsky, performer I.A. Gorshkov, 1973, pp. 21-23.

Claims (1)

A ship crane comprising a hull pivotally connected to a cargo boom, consisting of a main section connected by a hydraulic cylinder to the hull, and a rotary knock, a cargo suspension, a double-drum cargo winch with cargo and load-carrying ropes and independent drive hydraulic motors, pulleys conducting cargo and load-carrying pulleys ropes, the last of which is made with the possibility of passing under the rollers of a cargo trolley and storing at the receiving unit, and a tracking winch, characterized in that it is equipped with articulated hydraulic rams a core with a main section with a trunk, on the end of which a rotary cage with the indicated pulleys and a specified rotary knock are installed on one axis, with which the cargo suspension is connected with the possibility of lifting the cargo suspension for lifting and lowering the load, and the support rope is made with the possibility of disconnecting from the knock and fixing after storing at the receiving unit to the cargo trolley, made with a winch and with the possibility of attaching to the cargo rope.

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