Reversible small mast

Abstract

The utility model discloses a collapsible small mast, belongs to the technical field of ship masts, and solves the problem that the height of an existing mast is inconvenient to adjust. The mast comprises a mast body and a mast base, the mast base is fixed to a ship ceiling deck, a rotating shaft is rotationally installed in the mast base, one end of the mast body is connected with the rotating shaft, and a supporting assembly used for supporting the mast body in an inclined state is arranged between one side of the mast body and the mast base. And a locking device for locking the mast body in an upright state is arranged between the other side of the mast body and the mast base. According to the small mast, the mast can be put down, the height of the mast is reduced, and the small mast can pass through a narrow bridge conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of ship masts, and more particularly to a retractable small mast. Background Art

[0002] A mast is a tall pole on a ship that hangs sails and flags, mounts antennas, and supports observation platforms. It is a long, round wooden pole or metal column, usually erected vertically from the ship's keel or centerboard, and supports the lower boom of the horizontal sail, the boom, or the diagonal boom. In recent years, the flow of cargo and official patrols in inland tributaries have become increasingly frequent. Small and medium-sized ships navigating narrow waterways will face various bridge height restrictions. Because some bridges, due to historical reasons, do not fully consider the passability of current ships, the height of the bridge cannot be changed. Therefore, the only solution to this problem is to start with the design of the ship. The height of existing ship masts is mostly non-adjustable. Although some retractable masts can be adjusted in height, this affects the layout of other components on the mast, such as signal lights.

[0003] Therefore, a kind of reversible small mast of design is in the urgent need of research and development. Utility Model Content

[0004] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art. The purpose of the present invention is to provide a retractable small mast that can be folded down to lower its height for easy passage through narrow bridges.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a retractable small mast, comprising a mast body and a mast base, the mast base being fixed on the roof deck of the ship, a rotating shaft being rotatably installed in the mast base, one end of the mast body being connected to the rotating shaft, a supporting assembly for supporting the mast body in an inclined state being provided between one side of the mast body and the mast base, a locking device for locking the mast body in an upright state being provided between the other side of the mast body and the mast base.

[0006] As a further improvement, a lightning rod is provided on the top of the mast body, a radar is provided in the middle of the mast body, and a plurality of mast signal lights distributed along the axial direction of the mast body are also provided on the mast body.

[0007] Furthermore, the support assembly includes an upper support seat and a lower support seat, the upper support seat is fixed on one side of the mast body, and the lower support seat is fixed on one side of the mast base. When the mast body is laid down, the upper support seat is in contact with the lower support seat.

[0008] Furthermore, the locking device includes a knife and a sleeve. The knife is mounted on the top of the mast base on the other side of the mast body, and one end of the knife is hingedly connected to the mast base. The sleeve is fixed on the other side of the mast body. When the mast body is erected, the other end of the knife is inserted into the sleeve. A pin is also movably inserted between the knife and the sleeve.

[0009] Furthermore, a worm gear mechanism is detachably provided on one side of the mast base, an output end of the worm gear mechanism is connected to the rotating shaft, and a power assembly is detachably installed on the input end of the worm gear mechanism.

[0010] Furthermore, the power assembly is an operating crank, and a waterproof cover that can cover the input end of the worm gear mechanism is hingedly mounted on the mast base above the operating crank.

[0011] Furthermore, the power assembly includes a controller, a drive motor, a first infrared sensor, a second infrared sensor and a third infrared sensor. The drive motor is detachably mounted on the mast base, and the output end of the drive motor is detachably connected to the input end of the worm gear mechanism. The first infrared sensor is mounted on the support assembly, the second infrared sensor is mounted on the mast base on the side of the lock, and the third infrared sensor is mounted on the mast base on the side of the latch. A down button and an up button are respectively provided on the controller, and the drive motor, the first infrared sensor, the second infrared sensor, the third infrared sensor, the down button and the up button are all electrically connected to the controller.

[0012] Beneficial effects

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The utility model discloses a retractable small mast, whose mast body is a rotatably mounted structure, and the mast can be retracted to lower its height so as to facilitate passing through narrow bridges. At the same time, the mast body is supported by a support assembly so that it is in an inclined state after being retracted, thereby improving its stability after being retracted and facilitating the subsequent lifting of the mast body. After the mast body is erected, it is locked by a locking device to ensure that it can be used normally. The retractable mast can achieve the rapid reduction of the mast height. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of Example 1 of the utility model;

[0016] Figure 2 This is a side structural diagram of Example 1 of the present utility model;

[0017] Figure 3 for Figure 2 A schematic diagram of the structure at point A in the middle;

[0018] Figure 4 This is a schematic diagram of the main structure of the mast after it is laid down in Example 1 of the present utility model;

[0019] Figure 5 This is a schematic diagram of the main structure of Example 2 of the present utility model;

[0020] Figure 6 This is a side structural diagram of Example 2 of the present utility model;

[0021] Figure 7 for Figure 6 A magnified schematic diagram of the structure at B in the middle;

[0022] Figure 8 This is a schematic diagram of the main structure of the mast after it is laid down in Example 2 of the present utility model;

[0023] Figure 9 for Figure 8 A magnified schematic diagram of the structure at C in the middle;

[0024] Figure 10 This is a schematic diagram of the main structure of Example 1 of the utility model;

[0025] Figure 11 This is a side structural diagram of Example 1 of the present utility model;

[0026] Figure 12 for Figure 2 A schematic diagram of the structure at point A in the middle;

[0027] Figure 13 This is a schematic diagram of the main structure of the mast after it is folded down in Example 1 of the utility model.

[0028] Among them: 1-mast body, 2-mast base, 3-ship roof deck, 4-rotating shaft, 5-lightning rod, 6-radar, 7-mast signal light, 8-upper support seat, 9-lower support seat, 10-switch, 11-ferrule, 12-latch, 13-worm gear mechanism, 14-operating crank, 15-waterproof cover, 16-drive motor, 17-first infrared sensor, 18-second infrared sensor, 19-third infrared sensor. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0030] Example 1

[0031] See Figure 1-4, which is a specific embodiment of the utility model. The utility model is a retractable small mast, including a mast body 1 and a mast base 2. A lightning rod 5 is provided on the top of the mast body 1, a radar 6 is provided in the middle of the mast body 1, and the mast body 1 is also provided with a plurality of mast signal lights 7 distributed along its axial direction, constituting a ship mast. The mast base 2 is fixed to the ship's roof deck 3. A rotating shaft 4 is rotatably installed in the mast base 2. Both ends of the rotating shaft 4 can be connected to the mast base 2 through bearings. One end of the mast body 1 is connected to the rotating shaft 4, so that the mast body 1 can swing relative to the mast base 2 to achieve the purpose of laying down or standing up the mast body 1. A support assembly for supporting the mast body 1 in an inclined state is provided between one side of the mast body 1 and the mast base 2. This support assembly can ensure that after the mast body 1 is laid down, its angle with the horizontal plane is about 13°, which is an inclined state. This facilitates the subsequent lifting of the mast body 1 and prevents other parts on the mast body 1 from hitting the ship's roof deck 3, effectively protecting the mast. A lock is provided between the other side of the mast body 1 and the mast base 2 to lock the mast body 1 in an upright state.

[0032] The utility model discloses a retractable small mast, whose mast body 1 is a rotatably mounted structure, and the mast can be retracted to lower its height so as to facilitate passing through narrow bridges. At the same time, the mast body 1 is supported by a support assembly so that it is in an inclined state after being retracted, thereby improving its stability after being retracted and facilitating the subsequent lifting of the mast body. After the mast body 1 is erected, it is locked by a locking device to ensure that it can be used normally. The retractable mast can achieve the rapid reduction of the mast height.

[0033] Preferably, the support assembly includes an upper support seat 8 and a lower support seat 9, wherein the upper support seat 8 is fixed to one side of the mast body 1, and the lower support seat 9 is fixed to one side of the mast base 2. When the mast body 1 is laid down, the upper support seat 8 contacts the lower support seat 9, and the angle between the top surface of the lower support seat 9 and the horizontal plane is about 13°, so that the mast body 1 is in an inclined state after being laid down. By using the upper support seat 8 and the lower support seat 9 to cooperate in supporting the mast, the stability of the mast after being laid down can be improved, and the tilting state of the mast can be limited. Furthermore, a buffer rubber pad can be provided on the bottom surface of the upper support seat 8 or the top surface of the lower support seat 9, which can play a buffering role when the mast is laid down.

[0034] Preferably, the locking device includes a knife 10 and a sleeve 11, wherein the knife 10 is mounted on the top of the mast base 2 on the other side of the mast body 1, and one end of the knife 10 is hingedly connected to the mast base 2, and the sleeve 11 is fixed to the other side of the mast body 1. The sleeve 11 is a baffle with an opening at the top. When the mast body 1 is erected, the other end of the knife 10 is inserted into the sleeve 11. In order to improve the locking stability, a U-shaped seat is further provided on the side of the mast base 2 away from the hinge between the knife 10 and the mast base 2. When the knife 10 is inserted into the sleeve 11, it is also inserted into the U-shaped seat to achieve double locking and limiting. A pin 12 is also movably inserted between the knife 10 and the sleeve 11 to prevent the knife 10 from automatically lifting. Furthermore, a handle is provided on the top of the knife 10 to facilitate its lifting.

[0035] A method for operating a collapsible small mast, the method comprising the following steps:

[0036] S1. Mast lowering:

[0037] S1.1: Remove the pin 12 between the switch 10 and the ferrule 11;

[0038] S1.2: Hold the mast body 1 with your hand and lift the knife 10 at the same time;

[0039] S1.3: Slowly lower the mast body 1 until the upper support seat 8 and the lower support seat 9 are in contact and fit together, completing the mast lowering operation;

[0040] S2. Mast erection:

[0041] S2.1: Slowly lift the mast body 1 by hand until the sleeve 11 rotates to the position of the knife 10;

[0042] S2.2: Pull the knife 10 and place it into the ferrule 11;

[0043] S2.3: Insert the pin 12 between the knife 10 and the sleeve 11 to complete the mast erection operation.

[0044] Example 2

[0045] See Figure 5-9, is another specific embodiment of the present invention. This embodiment is basically the same as embodiment 1, and the difference is that: a worm gear mechanism 13 is detachably provided on one side of the mast base 2. The detachable worm gear mechanism 13 is convenient for disassembly and maintenance. The worm gear mechanism 13 is a worm gear transmission structure in the prior art and will not be described in detail here. The output end of the worm gear mechanism 13 is connected to the rotating shaft 4, and the input end of the worm gear mechanism 13 is detachably installed with a power component. The detachable installation method of the power component is convenient for replacing different power components for use, and is more convenient to use. In this embodiment, the worm gear mechanism 13 is used to drive the rotating shaft 4, which is convenient for using the power source to drive the rotating shaft 4 to rotate, and then drive the mast body 1 to fall down or stand up, which is more convenient and labor-saving to operate. At the same time, the worm gear mechanism 13 has a self-locking function to avoid the mast body 1 from automatically swinging and causing safety problems.

[0046] Preferably, the power component is an operating crank 14, the input end of the worm gear mechanism 13 is a polygonal shaft or a polygonal groove, one end of the operating crank 14 is provided with a polygonal slot or a polygonal plug shaft that is compatible with the polygonal shaft or polygonal groove, and a waterproof cover 15 that can cover the input end of the worm gear mechanism 13 is hingedly installed on the mast base 2 above the operating crank 14 to prevent rainwater from entering the worm gear mechanism 13.

[0047] A method for operating a collapsible small mast, the method comprising the following steps:

[0048] S1. Mast lowering:

[0049] S1.1: Remove the pin 12 between the switch 10 and the ferrule 11;

[0050] S1.2: Lift the switch 10;

[0051] S1.3: Install the operating crank 14 at the input end of the worm gear mechanism 13 and rotate the operating crank 14 to slowly lower the mast body 1 through the worm gear mechanism 13 until the upper support seat 8 and the lower support seat 9 are in contact and fit together, completing the mast lowering operation;

[0052] S2. Mast erection:

[0053] S2.1: Install the operating crank 14 at the input end of the worm gear mechanism 13 and rotate the operating crank 14 to slowly raise the mast body 1 through the worm gear mechanism 13 until the sleeve 11 rotates to the position of the knife 10;

[0054] S2.2: Pull the knife 10 and place it into the ferrule 11;

[0055] S2.3: Insert the pin 12 between the knife 10 and the sleeve 11 to complete the mast erection operation.

[0056] Example 3

[0057] See Figure 10-13 , is another specific embodiment of the present invention, which is basically the same as Example 2, except that: the power assembly includes a controller, a drive motor 16, a first infrared sensor 17, a second infrared sensor 18 and a third infrared sensor 19, wherein the drive motor 16 is detachably mounted on the mast base 2, and the output end of the drive motor 16 is detachably connected to the input end of the worm gear mechanism 13, the first infrared sensor 17 is mounted on the support assembly, specifically, the first infrared sensor 17 is mounted on the lower support seat 9, and the probe of the first infrared sensor 17 The end face is flush with the top surface of the lower support seat 9, and is used to detect whether the mast body 1 is folded into place. The second infrared sensor 18 is installed on the mast base 2 on the side of the lock device, and is used to detect whether the mast body 1 is erected into place. The third infrared sensor 19 is installed on the mast base 2 on the side of the pin 12, and is used to detect whether the bottom of the knife 10 is in place. A folding button and an erection button are respectively provided on the controller. The drive motor 16, the first infrared sensor 17, the second infrared sensor 18, the third infrared sensor 19, the folding button and the erection button are all electrically connected to the controller to realize automatic control.

[0058] A method for operating a collapsible small mast, the method comprising the following steps:

[0059] S1. Mast lowering:

[0060] S1.1: Remove the pin 12 between the switch 10 and the ferrule 11;

[0061] S1.2: Lift the blade 10. After the blade 10 leaves the third infrared sensor 19, the controller unlocks the lay-down button.

[0062] S1.3: Press the down button, and the controller controls the drive motor 16 to start forward rotation, driving the mast body 1 to slowly down through the worm gear mechanism 13 until the upper support base 8 and the lower support base 9 are in contact and in contact. At this time, the first infrared sensor 17 detects that the mast body 1 is lowered into place, and the controller locks the down button, unlocks the upright button, and controls the drive motor 16 to shut down, completing the mast down operation.

[0063] S2. Mast erection:

[0064] S2.1: Press the raise button, and the controller controls the drive motor 16 to start reverse rotation. The worm gear mechanism 13 drives the mast body 1 to slowly raise the mast body 1 until the sleeve 11 rotates to the position of the knife 10. At this time, the second infrared sensor 18 detects that the mast body 1 is raised. The controller locks the raise button, unlocks the lower button, and controls the drive motor 16 to turn off.

[0065] S2.2: Pull the knife 10 and place it into the ferrule 11. The third infrared sensor 19 detects that the knife 10 is in place, and the controller locks the down button.

[0066] S2.3: Insert the pin 12 between the knife 10 and the sleeve 11 to complete the mast erection operation.

[0067] In this embodiment, automatic control is adopted to control the lowering and raising of the mast body 1, which can greatly reduce labor intensity. At the same time, the lowering button and the raising button can be locked separately according to the position status of the mast body 1, which is convenient for operation and can avoid damage to structural components such as the mast body 1, support assembly, and knife 10 due to misoperation, thereby effectively extending the service life of the entire mast.

[0068] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A retractable small mast, characterized in that: The invention comprises a mast body (1) and a mast base (2), wherein the mast base (2) is fixed on a roof deck (3) of a ship, a rotating shaft (4) is rotatably installed in the mast base (2), one end of the mast body (1) is connected to the rotating shaft (4), a support assembly for supporting the mast body (1) in an inclined state is provided between one side of the mast body (1) and the mast base (2), and a locking device for locking the mast body (1) in an upright state is provided between the other side of the mast body (1) and the mast base (2).

2. A retractable small mast according to claim 1, characterized in that: The top of the mast body (1) is provided with a lightning rod (5), the middle of the mast body (1) is provided with a radar (6), and the mast body (1) is also provided with a plurality of mast signal lights (7) distributed along its axial direction.

3. A retractable small mast according to claim 1 or 2, characterized in that: The support assembly includes an upper support seat (8) and a lower support seat (9), wherein the upper support seat (8) is fixed on one side of the mast body (1), and the lower support seat (9) is fixed on one side of the mast base (2). When the mast body (1) is laid down, the upper support seat (8) is in contact with the lower support seat (9).

4. A collapsible small mast according to claim 3, characterized in that: The locking device includes a knife (10) and a sleeve (11), the knife (10) is mounted on the top of the mast base (2) on the other side of the mast body (1), and one end of the knife (10) is hingedly connected to the mast base (2), and the sleeve (11) is fixed on the other side of the mast body (1). When the mast body (1) is erected, the other end of the knife (10) is inserted into the sleeve (11), and a pin (12) is movably inserted between the knife (10) and the sleeve (11).

5. A collapsible small mast according to claim 4, characterized in that: A worm gear mechanism (13) is detachably provided on one side of the mast base (2), the output end of the worm gear mechanism (13) is connected to the rotating shaft (4), and a power assembly is detachably installed on the input end of the worm gear mechanism (13).

6. A collapsible small mast according to claim 5, characterized in that: The power assembly is an operating crank (14), and a waterproof cover (15) that can cover the input end of the worm gear mechanism (13) is hingedly mounted on the mast base (2) above the operating crank (14).

7. The collapsible small mast according to claim 5, characterized in that: The power assembly includes a controller, a drive motor (16), a first infrared sensor (17), a second infrared sensor (18) and a third infrared sensor (19); the drive motor (16) is detachably mounted on the mast base (2), and the output end of the drive motor (16) is detachably connected to the input end of the worm gear mechanism (13); the first infrared sensor (17) is mounted on the support assembly; the second infrared sensor (18) is mounted on the mast base (2) on the side of the stopper; and the third infrared sensor (19) is mounted on the mast base (2) on the side of the latch (12); a down button and an up button are respectively provided on the controller; and the drive motor (16), the first infrared sensor (17), the second infrared sensor (18), the third infrared sensor (19), the down button and the up button are all electrically connected to the controller.

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