Folding rotary boarding ladder

Abstract

The present invention provides a folding and rotating boarding ladder, which relates to the technical field of boarding ladders. It comprises: a fixed base plate; stabilizing columns are respectively inserted through the four corners of the fixed base plate; and a circle of cylindrical grooves is provided on the top of the fixed base plate. The folding ladder is rotated to the top of the ship to adapt to different ship docking positions, and then the height of the folding ladder is accurately adjusted up and down by two synchronous motors, so that the folding ladder can be stably placed on the deck of different ships, so that it can be perfectly docked with decks of different heights, making it convenient for people to get on and off the ship without additional adjustments. This solves the problem that when a large ship is docked in relatively deep water, people need to use a boarding ladder to get on and off the ship. If the boarding ladder cannot be rotated to adjust the position of the folding ladder, or the height of the folding ladder cannot be adjusted up and down, once the ship replaces the decking, the height will also change, resulting in the folding ladder being unable to sit stably on the hull, making it inconvenient for people to get on and off the hull.

Description

Technical Field

[0001] The present invention relates to the technical field of boarding ladders, and in particular to a folding and rotary boarding ladder. Background Art

[0002] The boarding ladder is an important tool used in marine operations, navigation, scientific research and other related activities to help personnel and equipment get on and off the ship safely and conveniently. It plays an indispensable role in marine hydrological and meteorological observation platforms, especially when facing complex marine environments and frequent meteorological changes. The design and function of the boarding ladder are particularly important. In the application of marine hydrological and meteorological mobile observation platforms, the boarding ladder plays a vital role as an important facility connecting the observation platform and the ship. The connection facilities between the ship and the platform usually consist of a series of horizontal or inclined pedals and support structures. Its main function is to provide safe and reliable access for personnel and equipment to get on and off the ship, ensuring safety and convenience during marine observation, scientific research operations and other activities. Fixed boarding ladders are usually installed on the side of the ship to provide stable access and are suitable for occasions where people frequently get on and off the ship. Mobile boarding ladders can be moved to different positions as needed and are suitable for the needs of different operating scenarios.

[0003] During the use of the boarding ladder, since the hull is often docked in relatively deep water, personnel need to use the boarding ladder to get on and off the hull. If the boarding ladder cannot be rotated to adjust the position of the folding ladder, or the height of the folding ladder cannot be adjusted up and down, once the ship's planking is replaced, the height of the folding ladder will also change, resulting in the folding ladder being unable to sit stably on the hull, making it inconvenient for personnel to get on and off the hull. Summary of the Invention

[0004] The disclosed embodiment relates to a foldable and revolving boarding ladder, which, according to the height of the boarding plate of the ship, starts a powerful reciprocating motor to drive the revolving ladder to rotate the position of the folding ladder so that the folding ladder is located directly above the ship. The rotation angle is precisely controlled to rotate the folding ladder to directly above the ship to adapt to the docking positions of different ships. The height of the folding ladder is then precisely adjusted up and down by two synchronous motors, so that the folding ladder can be stably placed on the boarding plates of different ships and perfectly docked with the boarding plates at different heights, making it convenient for people to get on and off the ship without additional adjustment. The motor drive is faster than manual operation, and the docking of the folding ladder with the boarding plates can be quickly completed, thereby improving the efficiency of people getting on and off the ship.

[0005] In a first aspect of the present disclosure, a foldable and revolving boarding ladder is provided, comprising: a fixed base plate; stabilizing columns are inserted through each of the four corners of the fixed base plate; a cylindrical groove is formed on the top of the fixed base plate; a circular groove is formed in the middle of the upper end of the fixed base plate, and a threaded groove is formed in the circular groove of the fixed base plate; a stabilizing plate is fixedly mounted in the circular groove of the fixed base plate; a circle of bolts are rotatably inserted through the edge of the stabilizing plate;

[0006] A stabilizing plate is fixedly mounted at the upper end of the top of the stabilizing plate; a fixing block is fixedly mounted at the upper end of the top of the stabilizing plate; a bearing platform is fixedly mounted on the upper end of the fixing block, and a through fixing hole is provided in the middle of the bearing platform; rectangular grooves are provided at both ends of the bearing platform, and two threaded grooves are provided at both ends of the rectangular groove of the bearing platform; a fixing groove is provided at the front end of the bearing platform; a rotating platform is rotatably mounted at the middle part of the upper end of the bearing platform, and a horizontal revolving ship ladder is fixedly mounted on the right end of the revolving ship ladder, and two through circular holes are provided at the right end of the revolving ship ladder;

[0007] A receiving platform is fixedly installed on the right end of the revolving ship ladder; mutually symmetrical fixing seats are fixedly installed on the right end of the upper end of the receiving platform, and synchronous motors are fixedly installed on the upper ends of the two fixing seats, and a circle of sawtooth blocks are fixedly installed on the rotating shaft of the synchronous motor, and toothed lifting plates are respectively installed on both ends of the receiving platform; folding ladders are fixedly installed on the lower ends of the two toothed lifting plates, and anti-slip strips are evenly installed on the folding ladders; mutually symmetrical guide rods are fixedly installed on the rear end of the folding ladder; and a cross mechanism is installed on the rear end of the folding ladder.

[0008] In at least some embodiments, a vertically upward fixed column is fixedly installed in the middle of the stabilizing plate, a rotating ladder is fixedly installed on the annular side wall of the fixed column, and an anti-slip disk is installed on the upper end of the fixed column.

[0009] In at least some embodiments, a cylindrical transparent protective cover is fixedly mounted on the upper end of the stabilizing plate, and a circle of support columns is fixedly mounted on the bottom of the stabilizing plate.

[0010] In at least some embodiments, a step is fixedly mounted on the right end of the front end of the fixing block, and arc-shaped slots are respectively formed at the bottoms of both ends of the fixing block.

[0011] In at least some embodiments, a ring-shaped rotation groove is provided at the upper end of the supporting platform, a powerful reciprocating motor is fixedly mounted at the fixed groove of the supporting platform, and a sawtooth disk is fixedly mounted on the rotating shaft of the powerful reciprocating motor.

[0012] In at least some embodiments, positioning plates are fixedly installed at the two rectangular grooves of the supporting platform, and symmetrical side plates are fixedly installed at the lower ends of the positioning plates, and screws are rotatably inserted at both ends of the side plates, and an inlet and outlet are opened at the edge of the supporting platform.

[0013] In at least some embodiments, a toothed plate is fixedly mounted on the bottom of the turntable, a turntable is fixedly mounted on the bottom of the toothed plate, a fixed fence is fixedly mounted on the edge of the upper end of the turntable, and a door is provided at the right end of the fixed fence.

[0014] In at least some embodiments, guardrails are fixedly installed on both ends of the revolving ship ladder, a through passage is provided at the left end of the revolving ship ladder, and a plug-in slot is provided on the right side wall of the revolving ship ladder.

[0015] In at least some embodiments, both ends of the receiving platform are respectively provided with a through lifting opening, a connecting plug plate is fixedly installed on the upper end of the left side of the receiving platform, a connecting plate is fixedly installed on the lower end of the left side of the receiving platform, and large through bolts are respectively inserted at both ends of the connecting plate, and mutually symmetrical guide holes are provided on the receiving platform.

[0016] When the boarding ladder of the present invention is in use, a powerful reciprocating motor is started to drive the revolving ladder to rotate the position of the folding ladder according to the height of the boarding board of the ship, so that the folding ladder is located directly above the ship. The rotation angle is accurately controlled to rotate the folding ladder to directly above the ship to adapt to different docking positions of ships. Then, the height of the folding ladder is accurately adjusted up and down by two synchronous motors, so that the folding ladder can be stably placed on the boarding boards of different ships and perfectly docked with the boarding boards of different heights, making it convenient for people to get on and off the ship without additional adjustment. The motor drive is faster than manual operation, and the docking of the folding ladder with the boarding boards can be completed quickly, thereby improving the efficiency of people getting on and off the ship.

[0017] In addition, the transparent protective cover blocks the outer end of the revolving ladder to prevent people from accidentally falling when going up and down the revolving ladder. In this way, the transparent protective cover can effectively protect people going up and down the revolving ladder. The transparent protective cover is usually made of glass or high-strength transparent materials. It can not only play a protective role, but also will not affect the overall visual effect and natural lighting, maintaining the openness and transparency of the space.

[0018] In addition, when the powerful reciprocating motor is started, the serrated disk on the rotating shaft will rotate, and the serrated disk will drive the toothed disk to rotate, and at the same time the rotating platform and the revolving ladder will also rotate. When the side wall of the revolving ladder is in contact with the right end positioning plate, the entrance and exit will coincide with the passage, making it convenient for staff to enter the revolving ladder from here. At this time, the receiving platform and folding ladder on the right end of the revolving ladder will also rotate and adjust their positions, and rotate the receiving platform and folding ladder to the top of the hull, making it convenient for personnel to get on and off the ship via the folding ladder. In busy ports or docks, this design can significantly improve the efficiency of personnel getting on and off the ship, especially when working on marine hydrological and meteorological observation platforms;

[0019] By starting the two synchronous motors at the same time, the sawtooth blocks on the rotating shafts will rotate, and the sawtooth blocks will drive the toothed lifting plate to rise upward. When the limit block on the folding ladder is in contact with the bottom of the receiving platform, the system will automatically stop the two synchronous motors to ensure a firm connection between the folding ladder and the receiving platform. This limit design prevents the lifting plate from rising or falling excessively, reducing the possibility of misoperation. Personnel can then go up from the receiving platform to the folding ladder, and then use two synchronous motors to move the toothed lifting plate down the folding ladder, and place the bottom of the folding ladder on the boat, making it convenient for personnel to go up the folding ladder to work on the boat. Personnel stand on the anti-slip strips of the folding ladder. The anti-slip strips on the folding ladder can increase friction and prevent personnel from slipping during work. This design improves the safety of personnel in high altitude or slippery environments and reduces the occurrence of work-related accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0021] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0022] In the attached figure:

[0023] Figure 1 Shows a schematic diagram of the upper left front axial structure of the present application;

[0024] Figure 2 Shows a schematic diagram of the upper right front axial structure of the present application;

[0025] Figure 3 A schematic diagram of the partially disassembled structure of the fixed base plate and the stabilizing plate of the present application is shown;

[0026] Figure 4 A schematic diagram of the partially disassembled structure of the stabilizing plate and the fixing block of the present application is shown;

[0027] Figure 5 A schematic diagram of the partially disassembled structure of the revolving ship ladder and the approach platform of the present application is shown;

[0028] Figure 6 A schematic diagram of the partially disassembled structure of the anti-slip disc, the supporting platform and the rotating platform of the present application is shown;

[0029] Figure 7 It shows a schematic diagram of the structure of the rotating table of the present application;

[0030] Figure 8 It shows a schematic diagram of the partially disassembled structure of the receiving platform of the present application;

[0031] Figure 9 It shows a partial cross-section of the rotary ship ladder and a schematic diagram of the toothed lifting plate structure of the present application;

[0032] Figure 10 A partial structural diagram of the cross mechanism of the present application is shown.

[0033] Reference Signs List

[0034] Fixed bottom plate; 2. Stable plate; 201. Fixed column; 202. Rotating ladder; 203. Anti-slip plate; 3. Stable plate; 301. Transparent protective cover; 302. Support column; 4. Fixed block; 401. Step; 402. Slot; 5. Loading platform; 501. Rotating slot; 502. Powerful reciprocating motor; 503. Sawtooth plate; 504. Positioning plate; 505. Side plate; 506. Inlet and outlet; 6. Rotating table; 601. Toothed plate; 602, turntable; 603, fixed fence; 7, revolving ship ladder; 701, guardrail; 702, passage; 703, plug-in plate slot; 8, receiving platform; 801, lifting port; 802, connecting plug-in plate; 803, connecting plate; 804, guide hole; 805, fixing seat; 806, synchronous motor; 807, serrated block; 9, toothed lifting plate; 901, folding ladder; 902, guide rod; 903, cross mechanism. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example 1: Please refer to Figures 1 to 10 :

[0037] The present invention proposes a folding and revolving boarding ladder, comprising: a fixed base plate 1; stabilizing columns are respectively inserted through the four corners of the fixed base plate 1; the stabilizing columns on the fixed base plate 1 are fixedly inserted into the ground to fix and restrict the entire fixed base plate 1, and a circle of cylindrical grooves is provided at the top of the fixed base plate 1; a circular groove is provided in the middle of the upper end of the fixed base plate 1, and a circle of threaded grooves is provided in the circular groove of the fixed base plate 1; a stabilizing plate 2 is fixedly installed at the circular groove of the fixed base plate 1; a circle of penetrating bolts are rotatably inserted at the edge of the stabilizing plate 2; the stabilizing plate 2 is fixedly installed in the circular groove of the fixed base plate 1, and then the bolts on the stabilizing plate 2 are rotatably inserted into the threaded groove of the fixed base plate 1, and the stabilizing plate 2 is fixedly installed on the fixed base plate 1, and the upper end of the top of the stabilizing plate 2 is fixed A stabilizing plate 3 is installed; a fixing block 4 is fixedly installed at the upper end of the top of the stabilizing plate 3; a supporting platform 5 is fixedly installed on the upper end of the fixing block 4, and a fixing hole is provided in the middle of the supporting platform 5; the fixing hole in the middle of the supporting platform 5 is fixedly sleeved on the fixed column 201, and rectangular grooves are respectively provided at both ends of the supporting platform 5, and two threaded grooves are respectively provided at both ends of the rectangular groove of the supporting platform 5; a fixing groove is provided at the front end of the supporting platform 5; a rotating platform 6 is rotatably installed in the middle of the upper end of the supporting platform 5, and a horizontal revolving ship ladder 7 is fixedly installed on the right end of the revolving ship ladder 7, and two circular holes are provided through the right end of the revolving ship ladder 7; a receiving platform 8 is fixedly installed on the right end of the revolving ship ladder 7; the personnel on the revolving ship ladder 7 walk from the right end to the receiving platform 8, and then walk from the receiving platform 8 to When the limit block on the folding ladder 901 is in contact with the bottom of the receiving platform 8, personnel can go up from the receiving platform 8 to the folding ladder 901, and then use two synchronous motors 806 to move the toothed lifting plates 9 downward to move the folding ladder 901, and place the bottom of the folding ladder 901 on the ship, making it convenient for personnel to go up from the folding ladder 901 to work on the ship. The rear end of the folding ladder 901 is equipped with a cross mechanism 903, and the upper end of the cross mechanism 903 is connected to the bottom of the receiving platform 8.

[0038] Among them, a vertically upward fixed column 201 is fixedly installed in the middle of the stabilizing plate 2, and a revolving ladder 202 is fixedly installed on the annular side wall of the fixed column 201. People can smoothly reach the ship from the revolving ladder 202, or go up to the revolving ladder 202 from the ship. An anti-falling plate 203 is installed on the upper end of the fixed column 201, and a cylindrical transparent protective cover 301 is fixedly installed on the upper end of the stabilizing plate 3. The inner side wall of the transparent protective cover 301 is fixedly attached to the outer side of the revolving ladder 202. The transparent protective cover 301 blocks and restricts the outer end of the revolving ladder 202 to prevent people from falling from the outside of the revolving ladder 202. In this way, the transparent protective cover 301 can effectively prevent people from getting on and off the revolving ladder 202. The bottom of the stabilizing plate 3 is fixedly installed with a circle of support columns 302, and the lower ends of the support columns 302 are fixedly inserted in the cylindrical grooves of the fixed base plate 1 to provide fixed support for the entire stabilizing plate 3 and the transparent protective cover 301. The right end of the front end of the fixed block 4 is fixedly installed with a step 401. The personnel walk from the bottom of the revolving ladder 202 to the step 401, and then pass through the step 401 to go from the entrance 506 through the channel 702 to the revolving ship ladder 7. The bottoms of both ends of the fixed block 4 are respectively provided with arc-shaped card slots 402, and the two card slots 402 at the bottom of the fixed block 4 are respectively fixedly stuck on the two ends of the transparent protective cover 301, and the two ends of the transparent protective cover 301 firmly support the two ends of the fixed block 4.

[0039] Among them, the upper end of the supporting platform 5 is provided with a ring-shaped rotating groove 501, and a strong reciprocating motor 502 is fixedly installed at the fixed groove of the supporting platform 5, and a serrated disk 503 is fixedly installed on the rotating shaft of the strong reciprocating motor 502. The sawteeth on the serrated disk 503 are engaged with the teeth on the toothed disk 601. When the serrated disk 503 on the rotating shaft of the strong reciprocating motor 502 is started, it will rotate. At this time, the serrated disk 503 will drive the toothed disk 601 to rotate, and the rotating platform 6 and the revolving ship ladder 7 will also rotate. When the side wall of the revolving ship ladder 7 is attached to the right end positioning plate 504, the entrance and exit 506 will coincide with the channel 702, making it convenient for personnel to enter the revolving ship from here. When the slewing platform 501 is lifted up, the slewing platform 501 is lifted up and the slewing platform 502 is lifted up, and the slewing platform 501 is lifted up and the slewing platform 502 is lifted up. The threaded groove of the carrier 5 firmly restricts the side plates 505 and the positioning plates 504 to prevent the positioning plates 504 from shaking and falling when touched. An entrance and exit 506 is provided at the edge of the carrier 5. People can board the carrier 5 from the entrance and exit 506 to easily enter the revolving ship ladder 7. Conversely, people can go up the revolving ship ladder 7 to the carrier 5. A toothed disc 601 is fixedly installed at the bottom of the rotating platform 6, and a turntable 602 is fixedly installed at the bottom of the toothed disc 601. The turntable 602 is rotatably installed in the rotating groove 501. When the turntable 602 and the rotating platform 6 rotate to adjust the direction, the turntable 602 will not move out of the rotating groove 501, and the turntable 6 will not move out of the rotating groove 501. A fixed fence 603 is fixedly installed at the edge of the end, and a door is provided at the right end of the fixed fence 603. The fixed fence 603 effectively protects the personnel on the rotating platform 6 to prevent them from falling from the rotating platform 6. Guardrails 701 are fixedly installed at both ends of the revolving ship ladder 7. A through passage 702 is provided at the left end of the revolving ship ladder 7. Personnel can land on the revolving ship ladder 7 from the passage 702. Personnel walking on the revolving ship ladder 7 are blocked and restricted by the guardrail 701, so they will not fall from the revolving ship ladder 7. The personnel on the revolving ship ladder 7 also walk from the passage 702 to the supporting platform 5, and a plug slot 703 is provided on the right side wall of the revolving ship ladder 7.

[0040] Among them, the two ends of the receiving platform 8 are respectively provided with a through lifting port 801, and the two toothed lifting plates 9 are respectively passed through the lifting ports 801 at both ends. The upper end of the left side of the receiving platform 8 is fixedly installed with a connecting plug plate 802, which is fixedly inserted into the plug plate groove 703. Then, the large bolts on the connecting plate 803 are passed through the two round holes at the right end of the revolving ship ladder 7, and the connecting plate 803 is fixedly installed on the revolving ship ladder 7 with large bolts. At the same time, the receiving platform 8 is fixedly welded to the side wall of the revolving ship ladder 7, so that the receiving platform 8 and the revolving ship ladder are fixedly connected. 7 is fixedly connected, a connecting plate 803 is fixedly installed at the lower end of the left side of the receiving platform 8, and large bolts are respectively inserted at both ends of the connecting plate 803. Mutually symmetrical guide holes 804 are opened on the receiving platform 8, and mutually symmetrical fixing seats 805 are fixedly installed at the right end of the upper end of the receiving platform 8. The upper ends of the two fixing seats 805 are respectively fixedly installed with synchronous motors 806, and a circle of sawtooth blocks 807 are fixedly installed on the rotating shaft of the synchronous motor 806. The sawteeth on the sawtooth block 807 are engaged with the tooth grooves on the tooth groove lifting plate 9.

[0041] Example 2, based on Example 1, Figure 1 and Figure 10 As shown, positioning plates 504 are fixedly installed at the two rectangular grooves of the supporting platform 5, and the lower ends of the positioning plates 504 are fixedly installed with mutually symmetrical side plates 505, and the two ends of the side plates 505 are respectively rotated and inserted with penetrating screws. The side plates 505 and the screws are all removed, and then the lower end of the positioning plate 504 is fixedly welded to the supporting platform 5 to firmly restrict the positioning plate 504. In this way, the positioning plate 504 will not move when touched, thereby avoiding the loosening of the screws due to long-term use and saving the cost of parts.

[0042] When in use, the inner wall of the transparent protective cover 301 is fixedly attached to the outer side of the revolving ladder 202, and the transparent protective cover 301 blocks and restricts the outer end of the revolving ladder 202 to prevent people from falling from the outside of the revolving ladder 202. In this way, the transparent protective cover 301 can effectively protect people from going up and down the revolving ladder 202. When people walk from the bottom of the revolving ladder 202 to the step 401, the saw teeth on the sawtooth disk 503 rotate and engage with the teeth on the toothed disk 601. When the strong reciprocating motor 502 is started, the sawtooth disk 503 on the rotating shaft will rotate. At this time, the sawtooth disk 503 will drive the toothed disk 601 to rotate, and the rotating platform 6 and the revolving ship ladder 7 will also rotate. When the side wall of the revolving ship ladder 7 is attached to the right end positioning plate 504, the inlet and outlet 506 will coincide with the channel 702. At this time, the revolving ship ladder The receiving platform 8 and the folding ladder 901 at the right end of the ladder 7 will also rotate and adjust their positions, rotating the receiving platform 8 and the folding ladder 901 to the top of the hull, and passing through the steps 401, they can go from the entrance 506 through the channel 702 to the revolving ship ladder 7. The personnel on the revolving ship ladder 7 walk from the right end to the receiving platform 8, and at the same time, the sawtooth blocks 807 on the rotating shafts of the two synchronous motors 806 are started to rotate, and the sawtooth blocks 807 are used to drive the toothed lifting plate 9 to rise upward. When the limit block on the folding ladder 901 is in contact with the bottom of the receiving platform 8, the personnel can go up from the receiving platform 8 to the folding ladder 901, and then use the two synchronous motors 806 to move the toothed lifting plate 9 downward to the folding ladder 901, and place the bottom of the folding ladder 901 on the ship, making it convenient for personnel to go up from the folding ladder 901 to work on the ship.

[0043] In this article, there are several points to note:

[0044] 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0045] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0046] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A foldable and revolving boarding ladder, comprising: A fixed base plate (1); four corners of the fixed base plate (1) are respectively provided with penetrating stabilizing columns; a circle of cylindrical grooves is provided at the top of the fixed base plate (1); a circular groove is provided in the middle of the upper end of the fixed base plate (1), and a circle of threaded grooves is provided in the circular groove of the fixed base plate (1); a stabilizing plate (2) is fixedly installed at the circular groove of the fixed base plate (1); a circle of penetrating bolts is rotatably inserted at the edge of the stabilizing plate (2); a stabilizing plate (3) is fixedly installed at the upper end of the top of the stabilizing plate (2); a fixing block (4) is fixedly installed at the upper end of the top of the stabilizing plate (3); a bearing platform (5) is fixedly installed at the upper end of the fixing block (4), and a penetrating fixing hole is provided in the middle of the bearing platform (5); rectangular grooves are provided at both ends of the bearing platform (5), and the bearing platform (5) is rectangular. Two thread grooves are respectively provided at both ends of the shaped groove; a fixing groove is provided at the front end of the bearing platform (5); a rotating platform (6) is rotatably installed in the middle of the upper end of the bearing platform (5), and a horizontal revolving ship ladder (7) is fixedly installed at the right end of the revolving ship ladder (7), and two through-holes are provided at the right end of the revolving ship ladder (7); a receiving platform (8) is fixedly installed at the right end of the revolving ship ladder (7); it is characterized in that tooth groove lifting plates (9) are respectively installed at both ends of the receiving platform (8); a folding ladder (901) is fixedly installed at the lower ends of the two tooth groove lifting plates (9), and anti-slip strips are evenly installed on the folding ladder (901); mutually symmetrical guide rods (902) are fixedly installed at the rear end of the folding ladder (901); a cross mechanism (903) is installed at the rear end of the folding ladder (901).

2. The foldable and revolving boarding ladder according to claim 1, characterized in that: A vertically upward fixed column (201) is fixedly installed in the middle of the stabilizing plate (2), a rotating ladder (202) is fixedly installed on the annular side wall of the fixed column (201), and an anti-slip plate (203) is installed on the upper end of the fixed column (201).

3. The foldable and revolving boarding ladder according to claim 1, characterized in that: A cylindrical transparent protective cover (301) is fixedly mounted on the upper end of the stabilizing plate (3), and a circle of supporting columns (302) is fixedly mounted on the bottom of the stabilizing plate (3).

4. The foldable and revolving boarding ladder according to claim 1, characterized in that: A step (401) is fixedly mounted on the right end of the front end of the fixing block (4), and arc-shaped slots (402) are respectively provided at the bottoms of both ends of the fixing block (4).

5. The foldable and revolving boarding ladder according to claim 1, characterized in that: A ring-shaped rotating groove (501) is provided at the upper end of the supporting platform (5), a powerful reciprocating motor (502) is fixedly mounted at the fixed groove of the supporting platform (5), and a sawtooth disk (503) is fixedly mounted on the rotating shaft of the powerful reciprocating motor (502).

6. The foldable and revolving boarding ladder according to claim 1, characterized in that: Positioning plates (504) are fixedly installed at the two rectangular grooves of the supporting platform (5), and mutually symmetrical side plates (505) are fixedly installed at the lower ends of the positioning plates (504). Screws are rotatably inserted at both ends of the side plates (505), and an inlet and outlet (506) are opened at the edge of the supporting platform (5).

7. The foldable and revolving boarding ladder according to claim 1, characterized in that: A toothed disc (601) is fixedly mounted on the bottom of the rotating platform (6), and a turntable (602) is fixedly mounted on the bottom of the toothed disc (601). A fixed fence (603) is fixedly mounted on the edge of the upper end of the rotating platform (6), and a door is provided at the right end of the fixed fence (603).

8. The foldable and revolving boarding ladder according to claim 1, characterized in that: Guardrails (701) are fixedly installed at both ends of the revolving ship ladder (7), a through passage (702) is provided at the left end of the revolving ship ladder (7), and a plug-in slot (703) is provided on the right side wall of the revolving ship ladder (7).

9. The foldable and revolving boarding ladder according to claim 1, characterized in that: The two ends of the receiving platform (8) are respectively provided with through-going lifting openings (801), the upper end of the left side of the receiving platform (8) is fixedly installed with a connecting plug plate (802), the lower end of the left side of the receiving platform (8) is fixedly installed with a connecting plate (803), and the two ends of the connecting plate (803) are respectively inserted with through-going large bolts, and the receiving platform (8) is provided with mutually symmetrical guide holes (804).

10. The foldable and revolving boarding ladder according to claim 1, characterized in that: The right end of the upper end of the receiving platform (8) is fixedly mounted with mutually symmetrical fixing seats (805), and the upper ends of the two fixing seats (805) are respectively fixedly mounted with synchronous motors (806), and a circle of sawtooth blocks (807) is fixedly mounted on the rotating shaft of the synchronous motor (806).

Images