Self-rotating boarding ladder

Abstract

The utility model discloses a self-rotating boarding ladder, and relates to the technical field of boarding ladders. Connecting plates are rotationally arranged at the two ends of the stairway respectively, and the lower rotary table pulley moves in the slide way along the slide way; partition plates are mounted at four top corners of the bottom of the tackle body respectively, so that mounting spaces are formed at the top corners of the bottom of the tackle body, and walking rollers are mounted in the mounting spaces; the lower rotary table is limited on the pulley body; side antifriction wheels are installed on the two sides of the bottom of the lower rotary table pulley and arranged on the other side of the partition plate. The upper rotary table is mounted through a fixed table; the tops of the lower rotary table and the upper rotary table are connected with lug plates respectively. The lower rotary table pulley has the advantages that the partition plate is mounted at the bottom of the pulley body to form the mounting space, the lower rotary table pulley is compact in structure, the lower rotary table is small in rotation resistance, and rotation is smoother; the walking rollers and the side antifriction wheels are arranged close to the lower rotary table, so that the overall stability is better during movement; the side antifriction wheels and the walking rollers are more convenient to install, and the sliding of the tackle body in the slide way is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of boarding ladders, and particularly relates to a self-rotating boarding ladder. Background Art

[0002] A boarding ladder is a device for loading and unloading workers and crew to safely and smoothly get on and off a ship during the operation of a modern large oil tanker docking at a terminal. And during the shipbuilding process, after the ship is launched, quay fitting-out and commissioning are required, and a boarding ladder is needed for people to get on and off the ship. Therefore, the boarding ladder is an essential supporting facility at the terminal.

[0003] In the prior art, Patent CN201720890766.0 discloses a straight boarding ladder. It is provided with supports on the terminal side and the ship side at both ends of the boarding ladder. A roller is installed on the terminal side support. When the barge rises and falls with the tide of the river, the boarding straight ladder can pitch at an angle. However, the follow-up of the roller is relatively random and the stability is poor. Another patent CN201821842494.8 discloses a tide self-adjusting universal boarding ladder, which has high running flexibility. The trolley body moves along the slide rail. The lateral friction reduction wheels roll and rub against both sides of the slide rail to reduce resistance. The trolley body is limited by the slide rail to have a sliding track, and the position conversion is more stable. However, in the above patents, the area of the turntable body in the trolley body is small, and the structure is not compact enough. The area of the turntable body on the same-sized trolley body is small, so that the supporting force of the turntable body per unit area on the ladder channel is greater, the rotation resistance of the turntable body is large, and the rotation is not smooth enough. In addition, the lateral friction reduction wheels and the walking wheels are arranged far away from the turntable body, and the overall stability during movement is insufficient. Moreover, the lateral friction reduction wheels and the walking wheels are close in position, which is inconvenient for installation. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a self-rotating boarding ladder, which can solve the problems in the prior art that the structure of the trolley body is not compact enough, the supporting force of the turntable body per unit area on the ladder channel is greater, the rotation is not smooth enough, the lateral friction reduction wheels and the walking wheels are arranged far away from the turntable body, resulting in insufficient overall stability during movement, and the lateral friction reduction wheels and the walking wheels are close in position, which is inconvenient for installation.

[0005] To solve the above technical problems, the technical solution of the utility model is: including an upper turntable, a lower turntable trolley, a ladder channel and a slideway. The upper turntable is arranged on the ship deck, the slideway is fixed on the terminal ground, connecting plates are respectively and rotatably arranged at both ends of the ladder channel, and the lower turntable trolley moves along the slideway in the slideway;

[0006] The lower turntable trolley includes a trolley body and a lower turntable; at the four top corners of the bottom of the trolley body, partition plates are respectively installed, and two vertically arranged partition plates are fixed at each top corner. The two vertically arranged partition plates form an installation space at the top corner of the bottom of the trolley body, and traveling rollers are installed in the installation space;

[0007] The lower turntable is restricted on the trolley body. A fixed shaft and a circular rotating space for the lower turntable to rotate are provided inside the trolley body. The partition plates are directly in contact and fixed with the outer side of the circular rotating space. A rotating shaft is connected to the bottom of the lower turntable, the rotating shaft is sleeved on the fixed shaft, and several rotating rollers are evenly installed on the outer edge of the bottom of the lower turntable;

[0008] On both sides of the bottom of the lower turntable trolley, two side antifriction wheels are respectively installed. The side antifriction wheels are arranged on the other side of the partition plate away from the installation space, and the side antifriction wheels protrude from the side surface of the lower turntable trolley;

[0009] The upper turntable is installed through a fixed platform. The upper turntable is restricted on the fixed platform. A fixed shaft and a space for the upper turntable to rotate are provided inside the fixed platform. A rotating shaft is connected to the bottom of the upper turntable, the rotating shaft is sleeved on the fixed shaft, and several rotating rollers are evenly installed on the outer edge of the bottom of the upper turntable;

[0010] Lower ear plates and upper ear plates are respectively connected to the tops of the lower turntable and the upper turntable. The connecting plate connected to the upper end of the ladder is connected to the upper ear plate through a pin shaft and a nut in cooperation. The connecting plate connected to the lower end of the ladder is connected to the lower ear plate through a pin shaft and a nut in cooperation.

[0011] Further, the vertically arranged partition plates do not contact each other.

[0012] Further, there are two upper ear plates and two lower ear plates respectively. The two upper ear plates are respectively arranged on both sides of the top of the upper turntable, and the two lower ear plates are respectively arranged on both sides of the top of the lower turntable. And the center connection line of the two upper ear plates passes through the center of the upper turntable, and the center connection line of the two lower ear plates passes through the center of the lower turntable.

[0013] Further, the connecting plate and the end of the ladder are connected through a pin shaft and a nut in cooperation.

[0014] Further, a chute corresponding to the side antifriction wheel is provided on the inner side surface of the slideway.

[0015] After adopting the above structure, the advantages of the present utility model are as follows: by installing a partition plate at the bottom vertex of the pulley body to form an installation space, the walking rollers are installed in the installation space, the partition plate is in direct contact and fixed with the outer side of the circular rotating space, the lower turntable occupies a relatively large area of the lower turntable pulley, the structure of the lower turntable pulley is compact, the area of the lower turntable on the lower turntable pulley of the same size is relatively large, the lower turntable has a greater supporting force on the ladder, the rotation resistance of the lower turntable is small, and the rotation is smoother;

[0016] The walking rollers and the side anti-friction wheels are arranged close to the lower turntable, and the overall stability during movement is better;

[0017] The side anti-friction wheels and the walking rollers are installed at intervals through the partition plate, the installation is more convenient, and the side anti-friction wheels roll along the chute on the inner side of the slideway, and the sliding of the pulley body in the slideway is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is an enlarged schematic diagram of a partial structure of the present utility model;

[0020] Figure 3 is a top view of the slideway and the lower turntable pulley of the present utility model;

[0021] Figure 4 is a top view of the lower turntable pulley of the present utility model;

[0022] Figure 5 is a side view of the upper turntable of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments can enable those skilled in the art to understand the present utility model more comprehensively, but do not limit the present utility model within the scope of the embodiments.

[0024] As Figure 1 shown, the following technical solutions are adopted in this specific embodiment: it includes an upper turntable 1, a lower turntable pulley 2, a ladder 3 and a slideway 4. The upper turntable 1 is arranged on the ship deck, the slideway 4 is fixed on the dock ground. Combining Figure 2 , connecting plates 5 are rotatably arranged at both ends of the ladder 3, and the connecting plates 5 and the ends of the ladder 3 are connected by a pin shaft and a nut in cooperation. Combining Figure 3 , the lower turntable pulley 2 moves along the slideway 4 in the slideway 4.

[0025] Combining Figure 4, the lower turntable pulley 2 includes a pulley body 21 and a lower turntable 22; partition plates 23 are respectively installed at the four top corners of the bottom of the pulley body 21, and two vertically arranged partition plates 23 are fixed at each top corner. The two vertically arranged partition plates 23 form an installation space 24 at the top corners of the bottom of the pulley body 21, and the vertically arranged partition plates 23 do not contact each other. A traveling roller 25 is installed in the installation space 24, and the pulley body 21 is driven to move along the inside of the slideway 4 by the traveling roller 25 to adjust the installation angle of the ladder 3 according to different positions of the ship.

[0026] The lower turntable 22 is restricted on the pulley body 21. A fixed shaft 6 and a circular rotation space for the lower turntable 22 to rotate are provided inside the pulley body 21. The partition plate 23 is directly in contact and fixed with the outer side of the circular rotation space. A rotating shaft 7 is connected to the bottom of the lower turntable 22. The rotating shaft 7 is sleeved on the fixed shaft 6, and several rotating rollers 8 are evenly installed on the outer edge of the bottom of the lower turntable 22. In this embodiment, 6 rotating rollers 8 are evenly installed on the bottom of the lower turntable 22. Through the rotating rollers 8, the lower turntable 22 can rotate easily in the circular rotation space.

[0027] Two side antifriction wheels 26 are respectively installed on both sides of the bottom of the lower turntable pulley 2. The side antifriction wheels 26 are arranged on the other side of the partition plate 23 away from the installation space 24, and the side antifriction wheels 26 protrude from the side of the lower turntable pulley 2. A chute corresponding to the side antifriction wheels 26 is provided on the inner side surface of the slideway 4. When the lower turntable pulley 2 slides along the slideway 4, the side antifriction wheels 26 can move along the chute to reduce the moving resistance and make the movement more stable.

[0028] Combined Figure 5 , the upper turntable 1 is installed through the fixed platform 9. The upper turntable 1 is restricted on the fixed platform 9. A fixed shaft 6 and a space for the upper turntable 1 to rotate are provided inside the fixed platform 9. A rotating shaft 7 is connected to the bottom of the upper turntable 1. The rotating shaft 7 is sleeved on the fixed shaft 6, and several rotating rollers 8 are evenly installed on the outer edge of the bottom of the upper turntable 1. The upper turntable 1 rotates on the fixed platform 9.

[0029] Lower lugs 11 and upper lugs 10 are respectively connected to the tops of the lower turntable 22 and the upper turntable 1. The connecting plate 5 connected to the upper end of the ladder 3 and the upper lug 10 are connected by a pin shaft and a nut in cooperation. The connecting plate 5 connected to the lower end of the ladder 3 and the lower lug 11 are connected by a pin shaft and a nut in cooperation.

[0030] There are two upper ear plates 10 and two lower ear plates 11 respectively. The two upper ear plates 10 are respectively arranged on both sides of the top of the upper turntable 1, and the two lower ear plates 11 are respectively arranged on both sides of the top of the lower turntable 22. The center connection line of the two upper ear plates 10 passes through the center of the upper turntable 1, and the center connection line of the two lower ear plates 11 passes through the center of the lower turntable 22. The upper ear plate 10 is rotatably connected to the connecting plate 5 connected to the upper end of the ladder 3, and the lower ear plate 11 is rotatably connected to the connecting plate 5 connected to the lower end of the ladder 3, so as to realize the adjustment of the installation angle and position of the ladder 3.

[0031] Working principle: By installing a partition plate 23 at the bottom corner of the trolley body 21 to form an installation space 24, the traveling roller 25 is installed in the installation space 24. The partition plate 23 is directly in contact and fixed with the outside of the circular rotating space, so that the lower turntable 22 occupies a larger area of the trolley body 21, and the lower turntable trolley 2 has a compact structure. The area of the lower turntable 22 on the lower turntable trolley 2 with the same area is larger, the supporting force of the lower turntable 22 on the ladder 3 is greater, the rotation resistance of the lower turntable 22 is small, and the rotation is smoother. The traveling roller 25 drives the lower turntable trolley 2 to move in the chute 4, and the side friction reducing wheel 26 can move along the chute to reduce the moving resistance. The traveling roller 25 and the side friction reducing wheel 26 are arranged close to the lower turntable 22, and the overall stability is better during movement. The side friction reducing wheel 26 and the traveling roller 25 are installed at intervals through the partition plate 23, and the installation is more convenient. The upper ear plate 10 is rotatably connected to the connecting plate 5 connected to the upper end of the ladder 3, and the lower ear plate 11 is rotatably connected to the connecting plate 5 connected to the lower end of the ladder 3. The lower turntable 22 and the upper turntable 1 are rotatably arranged, and the boarding ladder can rotate automatically to realize the adjustment of the installation angle and position of the ladder 3.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-rotating boarding ladder, characterized in that: It includes an upper turntable, a lower turntable trolley, a ladderway and a slideway. The upper turntable is arranged on the ship deck, the slideway is fixed to the wharf ground, connecting plates are rotatably arranged at both ends of the ladderway, and the lower turntable trolley moves along the slideway in the slideway. The lower turntable trolley includes a trolley body and a lower turntable. Partition plates are respectively installed at the four top corners of the bottom of the trolley body, and two vertically arranged partition plates are fixed at each top corner. The two vertically arranged partition plates form an installation space at the top corner of the bottom of the trolley body, and traveling rollers are installed in the installation space. The lower turntable is restricted on the trolley body. A fixed shaft and a circular rotating space for the lower turntable to rotate are arranged inside the trolley body. The partition plates are in direct contact and fixed with the outer side of the circular rotating space. A rotating shaft is connected to the bottom of the lower turntable. The rotating shaft is sleeved on the fixed shaft, and several rotating rollers are evenly installed on the outer edge of the bottom of the lower turntable. Two side antifriction wheels are respectively installed on both sides of the bottom of the lower turntable trolley. The side antifriction wheels are arranged on the other side of the partition plate away from the installation space, and the side antifriction wheels protrude from the side surface of the lower turntable trolley. The upper turntable is installed through a fixed platform. The upper turntable is restricted on the fixed platform. A fixed shaft and a space for the upper turntable to rotate are arranged inside the fixed platform. A rotating shaft is connected to the bottom of the upper turntable. The rotating shaft is sleeved on the fixed shaft, and several rotating rollers are evenly installed on the outer edge of the bottom of the upper turntable. Lower lugs and upper lugs are respectively connected to the tops of the lower turntable and the upper turntable. The connecting plate connected to the upper end of the ladderway and the upper lug are connected by a pin shaft and a nut in cooperation. The connecting plate connected to the lower end of the ladderway and the lower lug are connected by a pin shaft and a nut in cooperation.

2. The self-rotating boarding ladder according to claim 1, wherein: The vertically arranged partition plates do not contact each other.

3. The self-rotating boarding ladder according to claim 1, characterized in that: There are two upper lugs and two lower lugs respectively. The two upper lugs are respectively arranged on both sides of the top of the upper turntable, and the two lower lugs are respectively arranged on both sides of the top of the lower turntable. The central connection line of the two upper lugs passes through the center of the upper turntable, and the central connection line of the two lower lugs passes through the center of the lower turntable.

4. The self-rotating boarding ladder according to claim 1, characterized in that: The connecting plate and the end of the ladderway are connected by a pin shaft and a nut in cooperation.

5. A self-rotating boarding ladder according to claim 1, characterized in that: A chute corresponding to the side antifriction wheel is arranged on the inner side surface of the slideway.

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