Folding rotary boarding ladder

Abstract

The invention provides a folding rotary boarding ladder, and relates to the technical field of boarding ladders. Comprising a fixed bottom plate; through stabilizing columns are inserted into the four corners of the fixed bottom plate correspondingly. And a circle of cylindrical groove is formed in the top end of the fixed bottom plate. The folding ladder is rotated to the position over a ship to adapt to berthing positions of different ships, the height of the folding ladder is accurately adjusted up and down through the two synchronous motors, the folding ladder can be conveniently and stably located on ship plates of different ships, the folding ladder is perfectly in butt joint with the ship plates of different heights, personnel can get on and off the ships conveniently, and extra adjustment is not needed; the problems that a ship body is large and stops in deep water, so that people need to use a boarding ladder to get on and off the ship body, if the boarding ladder cannot rotate to adjust the position of a folding ladder or the height of the folding ladder cannot be adjusted up and down, once the height of a ship plate of a ship is replaced, the folding ladder cannot be stably located on the ship body, and the ship body is damaged are solved. And people are inconvenient to get on and off the ship body.

Description

Technical Field

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

[0002] A boarding ladder is an important tool used in marine operations, navigation, scientific research, and other related activities to help personnel and equipment safely and conveniently board and disembark ships. It plays an indispensable role in marine hydrometeorological 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 hydrometeorological mobile observation platforms, the boarding ladder, as an important facility connecting the observation platform and the ship, plays a crucial role. The connecting facility between the ship and the platform usually consists of a series of horizontal or inclined pedals and supporting structures. Its main function is to provide a safe and reliable access for personnel and equipment, ensuring safety and convenience during activities such as marine observation and scientific research operations. Fixed boarding ladders are usually installed on one side of the ship to provide a stable access, suitable for occasions where people frequently board and disembark the ship. Mobile boarding ladders can be moved to different positions according to needs, suitable for the requirements in different working scenarios.

[0003] During the use of the boarding ladder, since the hull is mostly docked in relatively deep water, personnel need to use the boarding ladder to board and disembark the hull. If the boarding ladder cannot rotate to adjust the position of the folding ladder, or the height of the folding ladder cannot be adjusted up and down, once the height of the ship's board changes, the folding ladder will also change accordingly, resulting in the folding ladder not being able to sit stably on the hull, making it inconvenient for personnel to board and disembark the hull. Summary of the Invention

[0004] An embodiment of the present disclosure relates to a folding rotary boarding ladder. According to the height of the upper board of the ship, a powerful reciprocating motor is started to drive the rotary ship ladder to rotate the position of the folding ladder, so that the folding ladder is located directly above the ship, and the rotation angle is accurately controlled to rotate the folding ladder directly above the ship to adapt to different ship docking positions. Then, the height of the folding ladder is accurately adjusted up and down by two synchronous motors, facilitating the folding ladder to sit stably on the boards of different ships, enabling it to perfectly dock with boards of different heights, and making it convenient for personnel to board and disembark the ship without additional adjustment. Motor drive is faster than manual operation and can quickly complete the docking of the folding ladder and the board, improving the efficiency of personnel boarding and disembarking the ship.

[0005] In a first aspect of the present disclosure, a folding rotary boarding ladder is provided, specifically including: a fixed bottom plate; stabilizing columns are respectively inserted through the four corners of the fixed bottom plate; a circular groove is opened at the top end of the fixed bottom plate; a circular groove is opened in the middle of the upper end of the fixed bottom plate, and a threaded groove is opened in a circle in the circular groove of the fixed bottom plate; a stabilizing disk is fixedly installed at the circular groove of the fixed bottom plate; a bolt is rotatably inserted through the edge of the stabilizing disk in a circle. A stabilizing plate is fixedly installed at the upper end of the top of the stabilizing plate; a fixing block is fixedly installed at the upper end of the top of the stabilizing plate; a bearing platform is fixedly installed at 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 installed at the middle of the upper end of the bearing platform, and a horizontal revolving ship ladder is fixedly installed at the right end of the revolving ship ladder, and two through circular holes are provided at the right end of the revolving ship ladder; A receiving platform is fixedly installed on the right end of the revolving ship ladder; a symmetrical fixing seat is fixedly installed on the right end of the upper end of the receiving platform, and a synchronous motor is fixedly installed on the upper ends of the two fixing seats, and a circle of sawtooth blocks is fixedly installed on the rotating shaft of the synchronous motor, and toothed lifting plates are respectively installed on both ends of the receiving platform; a folding ladder is fixedly installed on the lower ends of the two toothed lifting plates, and anti-slip strips are evenly installed on the folding ladder; symmetrical guide rods are fixedly installed on the rear end of the folding ladder; a cross mechanism is installed on the rear end of the folding ladder.

[0006] 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 plate is installed on the upper end of the fixed column.

[0007] 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 supporting columns is fixedly mounted on the bottom of the stabilizing plate.

[0008] 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.

[0009] In at least some embodiments, a ring-shaped rotating groove is opened at the upper end of the supporting platform, a powerful reciprocating motor is fixedly installed at the fixed groove of the supporting platform, and a sawtooth disk is fixedly installed on the rotating shaft of the powerful reciprocating motor.

[0010] In at least some embodiments, positioning plates are fixedly installed at the two rectangular grooves of the support platform, and symmetrical side plates are fixedly installed at the lower ends of the positioning plates. Screws are rotatably inserted at both ends of the side plates, and an inlet and outlet are opened at the edge of the support platform.

[0011] In at least some embodiments, a toothed plate is fixedly mounted on the bottom of the rotating table, 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 rotating table, and a door is opened at the right end of the fixed fence.

[0012] In at least some embodiments, guardrails are fixedly installed at both ends of the revolving ship ladder, a through passage is opened at the left end of the revolving ship ladder, and a plug-in slot is opened on the right side wall of the revolving ship ladder.

[0013] In at least some embodiments, both ends of the receiving platform are respectively provided with through lifting openings, 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 opened on the receiving platform.

[0014] When the boarding ladder of the present invention is in use, according to the height of the boarding board of the ship, a powerful reciprocating motor is started to drive the revolving ship ladder to rotate the position of the folding ladder, so that the folding ladder is located directly above the ship, and the revolving angle is accurately controlled to rotate the folding ladder to directly above the ship to adapt to the docking positions of different ships. Then, the height of the folding ladder is accurately adjusted up and down by two synchronous motors, so that the folding ladder is conveniently and stably located on the boarding boards of different ships, so that it can be perfectly docked with the boarding boards of different heights, and it is 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 and the boarding board can be quickly completed, thereby improving the efficiency of people getting on and off the ship. In addition, the transparent protective cover blocks and restricts the outer end of the spiral staircase to prevent people from accidentally falling when going up and down the spiral staircase. In this way, the transparent protective cover can effectively protect people going up and down the spiral staircase. The transparent protective cover is usually made of glass or high-strength transparent materials, which can not only play a protective role, but also will not affect the overall visual effect and natural lighting, and maintain the openness and transparency of the space; In addition, when the powerful reciprocating motor is started, the sawtooth disk on the rotating shaft will rotate, and the sawtooth disk will drive the toothed disk to rotate, and the rotating platform and the revolving ship ladder will also rotate. When the side wall of the revolving ship ladder is in contact with the right end positioning plate, the entrance and exit will coincide with the passage, making it convenient for the staff to enter the revolving ship ladder from here. At this time, the receiving platform and folding ladder on the right end of the revolving ship 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 people to get on and off the ship through the folding ladder. In busy ports or docks, this design can significantly improve the efficiency of people getting on and off the ship, especially in the work of marine hydrological and meteorological observation platforms; 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

[0015] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0016] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0017] In the attached picture: Figure 1 The schematic diagram of the upper left front axial structure of the present application is shown; Figure 2 The schematic diagram of the upper right front axial structure of the present application is shown; Figure 3 A schematic diagram of the disassembled structure of the fixed base plate and the stabilizing plate of the present application is shown; Figure 4 A schematic diagram of the partially disassembled structure of the stabilizing plate and the fixing block of the present application is shown; 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; Figure 6 A schematic diagram of the partially disassembled structure of the anti-slip plate, the bearing platform and the rotating platform of the present application is shown; Figure 7 A partial structural schematic diagram of the rotating table of the present application is shown; Figure 8 A schematic diagram of the partially disassembled structure of the receiving platform of the present application is shown; Figure 9 It shows a partial cross-section of the revolving ship ladder and a schematic diagram of the toothed lifting plate structure of the present application; Figure 10 A partial structural schematic diagram of the cross mechanism of the present application is shown.

[0018] Reference numerals list 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 plate slot; 8, reception platform; 801, lifting port; 802, connecting plug plate; 803, connecting plate; 804, guide hole; 805, fixing seat; 806, synchronous motor; 807, sawtooth block; 9, toothed lifting plate; 901, folding ladder; 902, guide rod; 903, cross mechanism. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment 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.

[0020] Example 1: Please refer to Figures 1 to 10 : The present invention proposes a folding and revolving boarding ladder, comprising: a fixed base plate 1; four corners of the fixed base plate 1 are respectively inserted with penetrating stabilizing columns; 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 are 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 are 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 bearing 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 bearing platform 5; the fixing hole in the middle of the bearing platform 5 is fixedly sleeved on the fixed column 201, and rectangular grooves are provided at both ends of the bearing platform 5, and two threaded grooves are provided at both ends of the rectangular groove of the bearing platform 5; a fixing groove is provided at the front end of the bearing platform 5; a rotating table 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 on the right end of the revolving ship ladder 6, and two through-holes are provided at 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 To the folding ladder 901, toothed lifting plates 9 are respectively installed at both ends of the receiving platform 8; the folding ladder 901 is fixedly installed at the lower ends of the two toothed lifting plates 9, and anti-slip strips are evenly installed on the folding ladder 901; a limiting block is fixedly installed at the rear end of the folding ladder 901, and the sawtooth blocks 807 on the rotating shafts of the two synchronous motors 806 are started at the same time to rotate, and the sawtooth blocks 807 are used to drive the toothed lifting plates 9 to rise upward. When the limiting blocks on the folding ladder 901 are 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 the folding ladder 901, and place the bottom of the folding ladder 901 on the ship, so that personnel can go up from the folding ladder 901 to work on the ship. On the contrary, the folding ladder 901 rises and comes into contact with the receiving platform 8, and the personnel on the folding ladder 901 can walk to the receiving platform 8 and enter the revolving ship ladder 7. The personnel stand on the anti-slip strips of the folding ladder 901 and will not slip. The rear end of the folding ladder 901 is fixedly installed with mutually symmetrical guide rods 902; the guide rods 902 slide through the guide holes 804. When the folding ladder 901 slides up and down, the guide rods 902 are restricted by the guide holes 804, and the folding ladder 901 can only slide up and down, preventing the folding ladder 901 from tilting when sliding up and down. The folding ladder 901 cannot stably carry personnel on board or off the ship, and a cross mechanism 903 is installed at the rear end of the folding ladder 901, and the upper end of the cross mechanism 903 is connected to the bottom of the receiving platform 8.

[0021] Among them, a vertically upward fixed column 201 is fixedly installed in the middle of the stabilizing disk 2. A rotating ladder 202 is fixedly installed on the annular side wall of the fixed column 201. Personnel can smoothly reach the ship from the rotating ladder 202 or walk from the ship to the rotating ladder 202. An anti-disengagement disk 203 is installed at the upper end of the fixed column 201. A cylindrical transparent protective cover 301 is fixedly installed at the upper end of the stabilizing disk 3. The inner side wall of the transparent protective cover 301 is fixedly attached to the outer side of the rotating ladder 202. The transparent protective cover 301 blocks and restricts the outer end of the rotating ladder 202 to prevent the up and down personnel from falling from the outer side of the rotating ladder 202. In this way, the transparent protective cover 301 can effectively protect the personnel going up and down the rotating ladder 202. A circle of support columns 302 is fixedly installed at the bottom of the stabilizing disk 3. The lower ends of the support columns 302 are fixedly inserted into the cylindrical grooves of the fixed bottom plate 1 to fixedly support the entire stabilizing disk 3 and the transparent protective cover 301. A step 401 is fixedly installed at the right end of the front end of the fixed block 4. Personnel walk from below the rotating ladder 202 to the step 401 and then can walk through the passage 702 from the import and export 506 to the revolving ship ladder 7 through the step 401. Arc-shaped card slots 402 are respectively opened at the bottoms of both ends of the fixed block 4. The two card slots 402 at the bottom of the fixed block 4 are respectively fixedly clamped at both ends of the transparent protective cover 301. Both ends of the transparent protective cover 301 stably support both ends of the fixed block 4.

[0022] Among them, a ring-shaped rotating groove 501 is opened at the upper end of the supporting platform 5, and a strong reciprocating motor 502 is fixedly installed at the fixed groove of the supporting platform 5, and a sawtooth disk 503 is fixedly installed on the rotating shaft of the strong reciprocating motor 502. The sawteeth on the sawtooth disk 503 are engaged with the teeth on the toothed disk 601. When the sawtooth disk 503 on the rotating shaft of the strong reciprocating motor 502 is started, it 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 entrance and exit 506 will coincide with the channel 702, which is convenient for personnel to enter the revolving ship from here. When the revolving ship ladder 7 is on the platform 5, the receiving platform 8 and the folding ladder 901 at the right end of the revolving ship ladder 7 will also rotate and adjust their positions, and the receiving platform 8 and the folding ladder 901 will be rotated and moved to the top of the ship body. Conversely, when the revolving ship ladder 7 is rotated to fit the left end positioning plate 504, the right end of the revolving ship ladder 7 will move to the left side of the fixed bottom plate 1, and the two rectangular grooves of the bearing platform 5 are respectively fixedly installed with positioning plates 504, and the side walls of the right end positioning plates 504 are in contact with the side walls of the revolving ship ladder 7, and the lower ends of the positioning plates 504 are fixedly installed with symmetrical side panels 505, and the two ends of the side panels 505 are respectively rotatably inserted with penetrating screws, and the screws on the side panels 505 are rotated and inserted into the bearings In the threaded groove of the carrier 5, the side plates 505 and the positioning plates 504 are firmly restricted to prevent the positioning plates 504 from shaking and falling when being touched. An entrance and exit 506 is opened at the edge of the carrier 5, and personnel can climb onto the carrier 5 from the entrance and exit 506 to conveniently enter the revolving ship ladder 7. Conversely, personnel can go up to the carrier 5 from the revolving ship ladder 7. A toothed plate 601 is fixedly installed at the bottom of the rotating table 6, and a turntable 602 is fixedly installed at the bottom of the toothed plate 601. The turntable 602 is rotatably installed in the rotating groove 501. When the turntable 602 and the rotating table 6 rotate to adjust the direction, the turntable 602 will not move out of the rotating groove 501, and the rotating table 6 A fixed fence 603 is fixedly installed at the edge of the end, and a door is opened 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 rotating ship ladder 7. A through passage 702 is opened at the left end of the rotating ship ladder 7. Personnel can land on the rotating ship ladder 7 from the passage 702. Personnel walking on the rotating ship ladder 7 are blocked and restricted by the guardrail 701, so they will not fall from the rotating ship ladder 7. The personnel on the rotating ship ladder 7 also walk from the passage 702 to the supporting platform 5, and a plug slot 703 is opened on the right side wall of the rotating ship ladder 7.

[0023] 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 the two ends. A connecting plug plate 802 is fixedly installed on the upper end of the left side of the receiving platform 8, and the connecting plug plate 802 is fixedly inserted in the plug plate groove 703, and 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 the 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 welded. 7 are 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, and symmetrical guide holes 804 are opened on the receiving platform 8, and symmetrical fixing seats 805 are fixedly installed at the right end of the upper end of the receiving platform 8, and synchronous motors 806 are respectively fixedly installed on the upper ends of the two fixing seats 805, and a circle of sawtooth blocks 807 are fixedly installed on the rotating shaft of the synchronous motor 806, and the sawteeth on the sawtooth block 807 are rotatably meshed with the tooth grooves on the tooth groove lifting plate 9.

[0024] Embodiment 2, based on embodiment 1, as Figure 1 and Figure 10 As shown, positioning plates 504 are fixedly installed at the two rectangular grooves of the supporting platform 5, and symmetrical side plates 505 are fixedly installed at the lower ends of the positioning plates 504, and screws are rotatably inserted at both ends of the side plates 505. 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 screws from loosening due to long-term use and saving the cost of parts.

[0025] 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 going up and down the revolving ladder 202. When the people walk from the bottom of the revolving ladder 202 to the step 401, the saw teeth on the sawtooth disk 503 rotate and mesh 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, and the receiving platform 8 and the folding ladder 901 will be rotated and moved to the top of the hull, and the personnel on the revolving ship ladder 7 can pass through the channel 702 from the entrance 506 through the step 401. The personnel on the revolving ship ladder 7 will go to the receiving platform 8 from the right end, and the sawtooth blocks 807 on the rotating shafts of the two synchronous motors 806 will be started to rotate, and the sawtooth blocks 807 will 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 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, so that the personnel can go up from the folding ladder 901 to work on the ship.

[0026] In this article, there are a few points to note: 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0027] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0028] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope 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 the two 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 (6), 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); and a cross mechanism (903) is installed at the rear end of the folding ladder (901).

2. A 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 strong 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 strong reciprocating motor (502).

6. The foldable and revolving boarding ladder according to claim 1, characterized in that: Positioning plates (504) are fixedly mounted at the two rectangular grooves of the support platform (5), and mutually symmetrical side plates (505) are fixedly mounted at the lower ends of the positioning plates (504), and screws penetrating therethrough are rotatably inserted at both ends of the side plates (505), and an inlet and outlet (506) are provided at the edge of the support 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 rotating disc (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 mounted on 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 plate groove (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); a connecting plug plate (802) is fixedly mounted on the upper end of the left side of the receiving platform (8); a connecting plate (803) is fixedly mounted on the lower end of the left side of the receiving platform (8); large through-going bolts are respectively inserted at the two ends of the connecting plate (803); and mutually symmetrical guide holes (804) are provided on the receiving platform (8).

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

Images