Reversible mast structure

Abstract

A collapsible mast structure is characterized in that a mast is installed on a rotating seat hinged to a base, the gravity center of the mast is located on the side, facing the dumping direction of the mast, of the hinged end of the rotating seat, so that the mast can automatically fall down under the acting force of gravity, and meanwhile, the two sides of the rotating seat are connected with a driver and a tensioner through an inhaul cable and a tensioning cable respectively; the mast can be stably erected or toppled, and the inhaul cable and the tensioning cable are respectively arranged by bypassing the plurality of pulleys, so that the driver can be mounted in a proper position on a ship. The collapsible mast is simple in structure and convenient to operate, the deck space cannot be excessively occupied, the inhaul cable can be matched with different types of power equipment to serve as a driver such as a motor, a winch and a hydraulic cylinder, the collapsible mast is wide in application range, the requirement for the power equipment is low, and the production and maintenance cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to ship equipment, in particular to a collapsible mast structure. Background Art

[0002] The mast is an important component of a ship. Traditionally, masts are fixedly mounted on the ship. However, with the development of ship technology, more and more masts are being designed to be detachable or retractable, and there are certain height restrictions on the height of the mast after it is lowered. On current ships, masts are mainly raised and lowered manually or by hydraulic cylinder drive. The former requires workers to pull the mast up and down with cables and secure it with pins, but this operation is difficult and labor-intensive, especially in complex sea conditions, and poses a high safety risk. The latter uses a connecting rod to connect the telescopic hydraulic cylinder and the mast. Although this structure can reduce the difficulty of operation, the volume and stroke required by the hydraulic cylinder are large, requiring a large amount of deck space. To this end, a mast raising and lowering drive device with announcement number CN220535882U uses a rotatable hydraulic swing cylinder as a drive. The hydraulic swing cylinder is mounted on a base and connected to the mast and swivel base, which are hinged to the base, thereby reducing the space occupied on the ship's deck. However, this drive device has high performance requirements for the hydraulic swing cylinder and is also burdened with a large load, resulting in high production costs and difficulty in maintenance. Utility Model Content

[0003] The purpose of the utility model is to provide a collapsible mast structure which has a simple structure, is easy to operate and can effectively reduce the space occupied by the deck.

[0004] The reversible mast structure described in the utility model includes a fixedly installed base and a rotating base hinged on the base. The mast is fixedly installed on the rotating base. It is characterized in that the center of gravity of the mast is located on the side of the hinged end of the rotating base facing the direction of the mast tilting; there is also a driver and a cable for driving the mast to stand upright, the cable passes through several pulleys and the two ends are respectively connected to the driver and the rotating base.

[0005] Furthermore, there is a tensioner that applies a force to the mast to rotate in the vertical direction, and the tensioner is connected to the mast via a tensioning cable.

[0006] Furthermore, the middle portion of the tensioning cable is arranged around a plurality of pulleys.

[0007] Furthermore, the middle portion of the tensioning cable is arranged around a plurality of pulleys.

[0008] Furthermore, a mounting seat is provided on the top of one side of the rotating seat extending outward, and the mast is mounted on the mounting seat.

[0009] Furthermore, the end of the cable is connected to the bottom of the rotating seat and is located below the mounting seat.

[0010] Furthermore, a lug plate is installed at the bottom of the rotating seat, and the cable is connected to the lug plate.

[0011] Furthermore, a limiter is fixedly installed below the mounting seat to prevent the rotating seat from rotating. The rotating seat drives the mast to rotate until it is upright and abuts against the limiter.

[0012] Furthermore, the tensioner is arranged outside a side of the base facing away from the mounting seat.

[0013] Furthermore, the driver is a hydraulic cylinder, and one end of the cable passes around the hydraulic cylinder and is connected to a fixed marine eye plate.

[0014] According to the utility model, the mast and the rotating seat can rotate relative to the base, thereby achieving erection and tilting. Moreover, because the center of gravity of the mast and the hinged end of the rotating seat and the base are not located in the same vertical direction, the mast has a tendency to fall in a set direction under the action of gravity. At the same time, the driver is connected to the rotating seat by a cable, and the direction in which the rotating seat is driven to rotate is opposite to the direction in which the rotating seat rotates when the mast falls, thereby applying a force to the rotating seat and the mast thereon, so that the mast remains in an upright state. When the mast needs to be lowered, the cable is gradually released by the driver, and the mast gradually falls under the action of gravity. When the mast needs to be raised again, the cable is tightened by the driver, which drives the rotating seat to rotate in the opposite direction, thereby raising the mast. This type of reversible mast has a simple structure and is easy to operate. At the same time, through the setting of multiple pulleys, the drive can be installed at a suitable position on the ship, thereby avoiding excessive occupation of deck space. In addition, through the setting of cables, different types of power equipment can be used as drives, such as motors, winches, hydraulic cylinders, etc. It has a wide range of adaptability and low requirements for power equipment, which can effectively reduce production and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the mast in the upright state in the reversible mast structure.

[0016] Figure 2 yes Figure 1 A side structural schematic diagram of the retractable mast structure is shown.

[0017] Figure 3 It is a structural diagram of the mast in the tilted state.

[0018] Figure 4 yes Figure 1 A schematic diagram of the partial structure of the retractable mast structure shown.

[0019] Figure 5 It is a structural schematic diagram of another embodiment of a collapsible mast structure. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0022] If there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0023] The utility model provides a collapsible mast structure.

[0024] The reversible mast structure of this embodiment includes a fixedly mounted base 1 and a rotating base 2 hinged to the base, a mast 3 fixedly mounted on the rotating base, and the center of gravity of the mast is located on the side of the hinged end of the rotating base facing the direction of the mast tilting; there are also a driver 4 and a cable 5 for driving the mast to stand upright, the cable passes through several pulleys 6 and the two ends are respectively connected to the driver and the rotating base; in addition, there is another tensioner 7 that applies a force to the mast 3 to rotate in the vertical direction, and the tensioner and the mast are connected by a tensioning cable 8; the middle part of the tensioning cable 8 also passes through several pulleys 6, and some of the pulleys 6 are installed on a fixed bracket 11.

[0025] like Figure 1As shown, the mast and swivel can rotate relative to the base, and the center of gravity of the mast is located to the left of the hinged end O between the swivel and the base. One end of the cable is connected to the lower end of the swivel. When the ship sails to waters with restricted height or encounters a bridge and needs to lower the mast, the staff activates the driver and tensioner to gradually release the cable. The mast then drives the swivel in a counterclockwise direction under the action of gravity. During this process, the tensioner continuously applies a force opposite to the direction of the mast's tilting through the tensioning cable, allowing the mast to fall safely and smoothly until it reaches the desired state. Figure 3 As shown, the mast is tilted to a horizontal position. When the mast needs to be raised again, the operator tightens the cable through the driver, which drives the rotating seat to rotate clockwise and drives the mast to erect. At the same time, the force exerted on the mast by the tensioner and tensioning cable is consistent with the direction of mast erection, thus providing additional power for mast erection, which can improve work efficiency and reduce the performance requirements of the driver.

[0026] The reversible mast structure, one side of the rotating seat 2, such as Figure 1 、 4 The top of the left side shown is provided with a mounting seat 21 extending outward, and the mast 3 can be fixedly or detachably mounted on the mounting seat, which can make the center of gravity of the mast deviate from the hinge point of the rotating seat and improve the convenience of mast installation. The end of the cable 5 is connected to the bottom of the rotating seat 2 and is located below the mounting seat 21 to provide a larger torque and reduce the power required by the drive. The cable 5 can be directly connected to the rotating seat 2, or a lug 22 can be installed at the bottom of the rotating seat 2, and the cable 5 is connected to the lug. In addition, below the mounting seat 21, specifically on the deck of the ship, or on the base, there is a fixed stopper 9 that blocks the rotation of the rotating seat 2. The rotating seat drives the mast 3 to rotate to an upright position and counteracts the stopper to provide a blocking force. This blocking force can prevent the mast from rotating excessively and make the mast more stable.

[0027] The described collapsible mast structure, the driver 4 can be a power device such as a motor, a winch, or a hydraulic cylinder, one end of the cable 5 passes around the hydraulic cylinder and is connected to a fixed marine eye plate 10, such as Figure 1 As shown in Figure 5, when the hydraulic cylinder extends or contracts, it can correspondingly drive the cable to be released or tightened, thereby erecting or falling the mast; using a hydraulic cylinder as a driver has a simple structure and stable operation, and through the setting of a pulley, the hydraulic cylinder can be installed in an appropriate position without occupying too much deck space, and can even be installed inside the ship.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A reversible mast structure, comprising a fixedly mounted base (1) and a rotating base (2) hinged to the base, wherein a mast (3) is fixedly mounted on the rotating base, and characterized in that: The center of gravity of the mast is located on the side of the hinged end of the rotating seat facing the tilting direction of the mast; there are also a driver (4) and a cable (5) for driving the mast to stand upright, and the cable passes through a plurality of pulleys (6) and is connected to the driver and the rotating seat at both ends.

2. The collapsible mast structure according to claim 1, characterized in that: There is also a tensioner (7) for applying a force to the mast (3) to rotate it in the vertical direction, and the tensioner and the mast are connected by a tensioning rope (8).

3. The collapsible mast structure according to claim 2, characterized in that: The middle portion of the tensioning cable (8) is arranged around a plurality of pulleys (6).

4. The collapsible mast structure according to claim 1, 2 or 3, characterized in that: A mounting seat (21) is provided on the top of one side of the rotating seat (2) and extends outwards, and the mast (3) is mounted on the mounting seat.

5. The collapsible mast structure according to claim 4, characterized in that: The end of the cable (5) is connected to the bottom of the rotating seat (2) and is located below the mounting seat (21).

6. The collapsible mast structure according to claim 5, characterized in that: The bottom of the rotating seat (2) is provided with an ear plate (22), and the cable (5) is connected to the ear plate.

7. The collapsible mast structure according to claim 4, characterized in that: A stopper (9) is fixedly installed below the mounting seat (21) to prevent the rotating seat (2) from rotating. The rotating seat drives the mast (3) to rotate until it is upright and abuts against the stopper.

8. The collapsible mast structure according to claim 4, characterized in that: The tensioner (7) is arranged outside the side of the base (1) facing away from the mounting seat (21).

9. The collapsible mast structure according to claim 1, 2 or 3, characterized in that: The driver (4) is a hydraulic cylinder, and one end of the cable (5) passes around the hydraulic cylinder and is connected to a fixed marine eye plate (10).

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