A main beam base rotation system for a fully revolving crane vessel

Abstract

The present invention relates to a main beam base rotation system for a full-slewing crane vessel, comprising a main beam base rotation interface, an auxiliary beam latch and a winch-spring cooperative system, wherein the main beam base rotation interface is divided into two layers, namely an upper pad on the upper layer and a lower pad on the lower layer, wherein the upper pad is welded to the main beam and the lower pad is welded to the main beam base; during the rotation of the main beam, the upper pad is used to realize rotation and rotates around the center of the main beam, while the main beam base remains stationary. Compared with existing full-slewing cranes or crane bases, the main beam base rotation system provided by the present invention has a base that is welded to the main deck, so the base has better strength and rigidity. At the same time, since the full-slewing working condition generally occurs under the working condition of fully plumb lifting heavy objects, the horizontal load is relatively small. At the same time, the auxiliary beams can provide horizontal support together. In addition, the working conditions of the main beam and the auxiliary beams are simultaneously controlled by an electric winch to avoid errors.

Description

Technical Field

[0001] The present invention relates to a crane ship, in particular to a base rotation system of a fully rotating crane ship, and belongs to the technical field of ships and ocean engineering. Background Art

[0002] The existing crane ship base is generally a single base, and the loads in multiple directions are all concentrated on one base. In particular, the existing crane ships generally adopt a full-rotation form. When the crane ship shakes, the base not only bears a large static operating load, but also bears a huge inertial dynamic load. The design requirements for the ship's structural strength are extremely high, and the cost is also particularly high. At the same time, there are great hidden dangers to operational safety. In severe cases, it is easy to cause the ship to capsize, which greatly affects the operation of the crane ship.

[0003] The crane vessel, which is based on the coordinated action of the main beam and the auxiliary beam, cannot fully rotate like a conventional crane because it needs to cooperate with the auxiliary beam. A separate rotation interface needs to be designed for this type of lifting equipment. Summary of the Invention

[0004] In order to solve the problem that a single base of an existing crane vessel bears a large load, which greatly affects the hull structure design and safe operation, the present invention provides a main beam base rotation system for a fully revolving crane vessel.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is: a main beam base rotation system of a fully rotating crane ship, including a main beam base rotation interface, an auxiliary beam pin and a winch-spring cooperative system, the main beam base rotation interface is divided into two layers, namely an upper pad and a lower pad, the upper pad is welded to the main beam, and the lower pad is welded to the main beam base; during the rotation of the main beam, the upper pad is used to realize rotation, and rotates around the center of the main beam, while the main beam base remains stationary.

[0006] Furthermore, the auxiliary beam latch and winch-spring cooperative system are installed between the main beam and the main beam base to achieve coordinated positioning and lifting of the main beam and the auxiliary beam.

[0007] Furthermore, the auxiliary beam pin and winch-spring cooperative system includes a pin, a spring, a lifting weight, an electric winch, and a cable. The lifting weight is placed in the inner hole of the base in the main beam base, and the inner hole of the base corresponds to the through holes on the lower pad and the upper pad. A pair of pins are symmetrically arranged in the transverse through holes in the lower part of the main beam base, and the tail ends of the pins are connected by springs. The electric winch is installed on the main beam and is connected to the lifting weight through a cable passing through the main truss, the upper pad and the lower pad. The cable is then connected to the pin after passing through the lifting weight.

[0008] Furthermore, the lifting weight is a circular ring structure with beveled ends, and the purpose of the bevel is to facilitate passing through the base interface.

[0009] Furthermore, the lifting weight is provided with a plurality of hooks.

[0010] Furthermore, in the operating state, the lifting weight is connected to the hook on the cable through the hook on it, and is driven by the electric winch to move up and down, thereby assisting in controlling the rotation of the main beam.

[0011] Furthermore, under the lifting condition, the lifting weight block is fixed at the interface between the base and the pad, thereby limiting the movement of the main beam.

[0012] Furthermore, under the rotating condition, the hook on the cable controlled by the electric winch is disconnected from the hook on the lifting weight, and the lifting weight slides into the inside of the main beam base, allowing the main beam to rotate. The auxiliary beam pin located below the main beam base is in a retracted state under the action of the spring, and the auxiliary beam cooperates with the main beam to perform a full rotation movement.

[0013] Furthermore, after the main beam completes the rotation condition, the pin and the weight block are driven together by the electric winch control, so that the weight block is inserted into the main beam interface and the pin is inserted into the auxiliary beam to complete the positioning at the same time.

[0014] Furthermore, evenly distributed anti-tilt elbow plates are welded between the main truss of the main beam and the upper pad.

[0015] The beneficial effects of the present invention are:

[0016] Compared to existing full-slewing cranes or crane bases, the main beam base slewing system provided by the present invention features a base welded to the main deck, resulting in greater base strength and rigidity. Furthermore, since full-slewing operation typically occurs with a fully vertically suspended load, horizontal loads are relatively small. The auxiliary beams also provide horizontal support, while vertical loads are directly transferred to the base via pads. The greater strength and rigidity of the base enhance safety during slewing operations. Furthermore, the operating conditions of both the main beam and the auxiliary beams are controlled simultaneously by an electric winch, preventing errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a cross-sectional view of the crane ship main beam base rotation system of the present invention;

[0018] Figure 2 This is a longitudinal section of the crane ship main beam base rotation system of the present invention;

[0019] Figure 3 Schematic diagram of auxiliary beam and auxiliary beam base Figure 1 ;

[0020] Figure 4 Schematic diagram of auxiliary beam and auxiliary beam base Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the main beam interface in the operating state;

[0022] Figure 6 The detailed structure of the lifting weight;

[0023] In the figure: 1 is the main beam, 4 is the main beam base, 11 is the main truss, 12 is the electric winch, 13 is the cable, 14 is the anti-tilt bracket, 15 is the upper pad welded to the bracket, 16 is the lower pad welded to the main beam base, 17 is the lifting weight, 18 is the inner hole of the base, 31 is the pin, 32 is the spring, 172 is the cable hook, and 173 is the lifting weight hook. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1 As shown in FIG2 , a main beam base rotation system of a fully rotating crane vessel of the present invention includes a main beam base rotation interface, an auxiliary beam latch and a winch-spring coordinated system.

[0026] The rotation interface of the main beam base is divided into two layers, namely the upper pad and the lower pad. The upper pad is welded to the main beam, and the lower pad is welded to the main beam base. During the rotation of the main beam, it relies on the upper pad to achieve rotation, and rotates around the center of the main beam, and the main beam base remains stationary. The pin and the lifting weight are opened and closed at the same time, and are controlled by the electric winch at the same time. There is a hook in the lifting weight, which is in a connected state under the lifting condition. At this time, the lifting weight slides to the inside of the main beam base, and the main beam rotates at this time. At the same time, the auxiliary beam pin located under the main beam base is in a retracted state, and the auxiliary beam cooperates with the main beam to perform a full rotation movement. The electric winch and the spring are coordinated to realize the coordinated positioning and lifting of the main beam and auxiliary beam.

[0027] The auxiliary beam latch and winch-spring coordination system includes a latch 31, a spring 32, a weight 17, an electric winch 12, and a cable 13. The weight 17 is placed in the base inner hole 18 within the main beam base 4, and the base inner hole 18 corresponds to the through-holes on the lower pad 16 and the upper pad 15. A pair of latches 31 are symmetrically arranged in the transverse through-holes in the lower part of the main beam base 4, and the tail ends of the latches 31 are connected by a spring 32. The electric winch 12 is connected to the weight 17 via a cable 13 that passes through the main truss, the upper pad 15, and the lower pad 1. The cable 13 then passes through the weight 17 and connects to the latch 31.

[0028] like Figure 3 4 shows that the upper pad 15 is welded to the main beam, the lower pad 16 is welded to the main beam base, and the upper pad 15 rotates around the center of the main beam on the lower pad 16. The trajectory is as follows Figure 34, the dotted line position is shown. After reaching the predetermined position, the electric winch 12 pulls the weight block 17 to limit it to the interface position. On the one hand, it fixes the main beam to prevent it from continuing to rotate. On the other hand, it effectively transmits the main beam load. The final interface diagram of the main beam is as follows Figure 5 shown.

[0029] like Figure 6 As shown, the weight block 17 is a circular ring structure with sharpened ends, wherein a large number of weight block hooks 173 are provided on the weight block, which are connected to the cable hook 172 on the cable 13 in the working state and realize up and down movement through the electric winch 12, thereby assisting in controlling the rotation of the main beam. In the lifting condition, the connection is made to limit the movement of the main beam, and in the rotation condition, the first hook 172 is disconnected from the weight block hook 173, at which time, the upper plate 15 can slide around the center of the main beam on the lower plate 16. In addition, combined with Figure 1 As shown, Figure 1 The position of the pin used to position the auxiliary beam is also shown. The pin 31 and the weight block 17 are controlled by the electric winch 12. When the main beam completes the rotation and the weight block is inserted into the main beam interface, the positioning pin 31 of the auxiliary beam completes the positioning at the same time.

Claims

1. A main beam base rotation system for a fully revolving crane vessel, characterized by: It includes a main beam base rotation interface, an auxiliary beam latch and a winch-spring cooperative system. The main beam base rotation interface is divided into two layers, namely an upper pad on the upper layer and a lower pad on the lower layer. The upper pad is welded to the main beam, and the lower pad is welded to the main beam base. During the rotation of the main beam, the upper pad is used to realize rotation and rotate around the center of the main beam, while the main beam base remains stationary. The auxiliary beam latch and the winch-spring cooperative system are installed between the main beam and the main beam base to realize the coordinated positioning of the main beam and the auxiliary beam. Lifting; the auxiliary beam pin and winch-spring cooperative system includes a pin, a spring, a lifting weight, an electric winch, and a cable. The lifting weight is placed in the inner hole of the base in the main beam base, and the inner hole of the base corresponds to the through holes on the lower pad and the upper pad. Two pairs of pins are symmetrically arranged in the horizontal through holes in the lower part of the main beam base, and the tail ends of the two pins are connected by a spring. The electric winch is installed on the main beam and is connected to the lifting weight through a cable passing through the main truss, the upper pad and the lower pad. The cable is then connected to the pin after passing through the lifting weight.

2. The main beam base rotation system of the fully revolving crane vessel according to claim 1 is characterized in that: The lifting weight block is a circular ring structure with beveled ends, and the purpose of the bevel is to facilitate passing through the base interface.

3. The main beam base rotation system of the fully revolving crane vessel according to claim 1 is characterized in that: A plurality of hooks are provided on the lifting weight block.

4. The main beam base rotation system of the fully revolving crane vessel according to claim 3 is characterized in that: In the operating state, the lifting weight is connected to the hook on the cable through the hook on it, and is driven by an electric winch to move up and down, thereby assisting in controlling the rotation of the main beam.

5. The main beam base rotation system of the fully revolving crane vessel according to claim 4 is characterized in that: Under the lifting condition, the lifting weight is fixed at the interface between the base and the pad, thereby limiting the movement of the main beam.

6. The main beam base rotation system of the fully revolving crane vessel according to claim 4, characterized in that: Under the rotating condition, the hook on the cable controlled by the electric winch is disconnected from the hook on the lifting weight, and the lifting weight slides into the inside of the main beam base, allowing the main beam to rotate. The auxiliary beam pin located below the main beam base is in a contracted state under the action of the spring, and the auxiliary beam cooperates with the main beam to perform a full rotation movement.

7. The main beam base rotation system of the fully revolving crane vessel according to claim 6, characterized in that: After the main beam completes the rotation condition, the pin and the weight block are driven by the electric winch control, so that the weight block is inserted into the main beam interface, and the pin is inserted into the auxiliary beam to complete the positioning at the same time.

8. The main beam base rotation system of the fully revolving crane vessel according to claim 1, characterized in that: Uniformly distributed anti-tilt brackets are welded between the main truss of the main beam and the upper pad.

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