A flip-up landing ladder for a boarding platform

Abstract

The present invention discloses a flip-type landing ladder for a boarding platform. It comprises a first ladder and a second ladder respectively connected to the hull in a sliding manner. Two symmetrically arranged winches and two symmetrically arranged hoisting wheel groups are respectively installed on the surface of the hull. The ports of the two winches are wound with cables. The other ends of the two cables are respectively fixedly connected to the first ladder and the second ladder. The surfaces of the two cables are respectively slidably matched with the two hoisting wheel groups. A flip mechanism is installed on the surface of the hull and at positions corresponding to the bottom of the first ladder and the middle of the second ladder. The flip mechanism comprises a supporting platform fixedly connected to the hull, and a flip ladder is hinged on the inner wall of the supporting platform. The landing ladder of the present invention changes the elevated inclined ladder structure of the traditional landing ladder into a flip-type flat ladder structure. Due to the conversion of the flat ladder structure, the staff does not need to perform up and down operations when using the ladder body, thereby reducing the degree of strain on the staff and improving the safety of the staff.

Description

Technical Field

[0001] The invention relates to the technical field of landing ladders, in particular to a flip landing ladder for a boarding platform. Background Art

[0002] Large oil tankers and cargo ships take a long time to load and unload at the dock, and are greatly affected by the rise and fall of tides and the full and empty loads of cargo. Therefore, the large height difference between the deck and the dock brings great inconvenience to the staff getting on and off the ship. The boarding ladder is a device for loading and unloading workers and crew members to get on and off the ship safely and smoothly during the docking operation of modern large oil tanker terminals.

[0003] Lawrence Canal boarding platform is a fixed steel platform that needs to be installed with a steel inclined ladder before it can be used. This will increase the platform material and occupy limited deck space. In addition, the crew needs to walk up and down when using it, which may easily cause safety hazards. Based on this, the present invention provides a flip-type boarding ladder for the boarding platform to solve the problems raised in the above-mentioned background technology. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the object of the present invention is to provide a flip-type landing ladder for a boarding platform. The landing ladder of the present invention changes the elevated inclined ladder structure of the traditional landing ladder into a flip-type flat ladder structure. Due to the conversion of the flat ladder structure, the workers do not need to go up and down when using the ladder, thereby reducing the strain on the workers and improving the safety of use of the workers.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a technical solution adopted by a flip-type landing ladder of a boarding platform is: it comprises a first ladder and a second ladder respectively connected to the hull by sliding, two symmetrically arranged winches and two symmetrically arranged hoisting wheel groups are respectively installed on the surface of the hull, the ports of the two winches are both wound with cables, the other ends of the two cables are respectively fixedly connected to the first ladder and the second ladder, the surfaces of the two cables are respectively slidably matched with the two hoisting wheel groups, and the surface of the hull and the positions corresponding to the bottom of the first ladder and the middle of the second ladder are both installed with flipping mechanisms;

[0008] The turnover mechanism comprises a supporting platform fixedly connected to the hull, a turnover ladder is hingedly connected to the inner wall of the supporting platform, and a ladder clamping mechanism cooperating with the first ladder and the second ladder is installed on the bottom surface of the turnover ladder.

[0009] As a preferred embodiment, the support platform includes a support table fixedly connected to the hull, two symmetrically arranged ear plates are installed on the top surface of the support table, and two symmetrically arranged hinge seats are installed at the tail of the ladder, and the inner walls of the two hinge seats are respectively hinged to the two ear plates, and a bottom support plate cooperating with the ladder is installed on the top surface of the support table, and a group of reinforcing ribs distributed in a linear array are installed on the inner wall of the support table, and the support table and the reinforcing ribs are both "L" shaped structures.

[0010] As a preferred solution, a guard frame is fixedly installed on the top surface of the ladder, a mounting groove is fixedly opened inside the ladder, a grille plate is clamped inside the mounting groove, and mesh holes are evenly distributed inside the grille plate. A number of regularly distributed angle plates that cooperate with the bottom support plate are installed on the bottom surface of the ladder, and the guard frame and the angle plates are both "L" shaped structures.

[0011] As a preferred solution, a locking plate is fixedly installed on the surface of the guardrail, a locking hole is fixedly opened on the surface of the locking plate, a bolting piece matching the locking hole is fixedly installed on the top surface of the support platform, the angle plate is made of iron, and a magnet is built into the bottom support plate.

[0012] As a preferred solution, the ladder clamping mechanism includes a fixed frame fixedly connected to the ladder, two horizontally arranged guide rods and a screw drive module are fixedly mounted on the surface of the fixed frame, the inner wall of the fixed frame is slidably connected with a clamping platform through two guide rods, the inner wall of the clamping platform is transmission connected to the screw drive module, the inner wall of the clamping platform is rotatably connected to two pairs of ladder rollers, the inner walls of the two ladder rollers are rotatably connected to clamping rollers, the ends of the two clamping rollers are fixedly mounted with clamping plates, a transmission motor is installed inside the clamping platform, and the output shaft ends of the transmission motor are transmission connected to the two clamping rollers.

[0013] As a preferred solution, the tails of the two clamping rollers are fixedly mounted with driven gears, the output shaft end of the transmission motor is fixedly mounted with a driving gear, the peripheral side surfaces of the driving gear are respectively meshed with the two driven gears, and the transmission gear is arranged between the two driven gears.

[0014] As a preferred embodiment, the screw drive module includes a drive motor and a horizontally arranged transmission screw, the peripheral side surface of the transmission screw is rotatably connected to the fixed frame, one surface of the drive motor is fixedly connected to the transmission screw, and the peripheral side surface of the transmission screw is transmission-connected to the clamping table.

[0015] As a preferred embodiment, two guide rail frames and two roller brackets are fixedly installed on the surface of the hull, and the inner walls of the two guide rail frames and the two roller brackets are respectively slidably matched with the first-level ladder and the second-level ladder, and rollers are equidistantly installed on the surface of the roller brackets.

[0016] As a preferred solution, the first-level ladder and the second-level ladder are both inclined and the angle between the first-level ladder and the horizontal line and the angle between the second-level ladder and the horizontal line are both 60°. The inclination directions of the first-level ladder and the second-level ladder are opposite, and the first-level ladder and the second-level ladder are staggered and adjacent to the flip mechanism in adjacent positions.

[0017] As a preferred embodiment, the first-stage ladder and the second-stage ladder both include a ladder frame, the inner wall of the ladder frame is installed with a group of pedals distributed in a linear array, the surface of the ladder frame is installed with two symmetrically arranged handrails, the bottom end of the ladder frame is hinged with a foot seat, and the bottom surface of the foot seat is evenly covered with friction patterns.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides a flip-type landing ladder for a boarding platform, which has the following features:

[0020] Beneficial Effects

[0021] The landing ladder of the present invention changes the elevated inclined ladder structure of the traditional landing ladder into a flip-type flat ladder structure. Due to the conversion of the flat ladder structure, the workers do not need to go up and down when using the ladder body, thereby reducing the workers' strain and improving the workers' safety. This type of landing ladder not only saves an inclined ladder, but its integrity design also avoids secondary welding and paint damage due to the pre-installation of the platform and the inclined ladder pad. The platform is very convenient to use and has wider flexibility and applicability. At the same time, this flip-type flat ladder structure can be quickly stored and folded after use, thereby further reducing the space occupied by the ladder body on the deck. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view structural schematic diagram of a flip-type landing ladder for a boarding platform of the present invention;

[0023] Figure 2 For the present invention Figure 1 A side view structural schematic diagram of;

[0024] Figure 3 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0025] Figure 4 It is a structural schematic diagram of the turning mechanism of the present invention;

[0026] Figure 5 For the present invention Figure 4 A schematic diagram of the local enlarged structure at B in the middle;

[0027] Figure 6 For the present invention Figure 4 A schematic diagram of the front view structure of

[0028] Figure 7 It is a schematic diagram of the structure of the guide rod and ladder roller of the present invention;

[0029] Figure 8 It is a schematic diagram of the exploded structure of the clamping roller and the ladder roller of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the clamping platform of the present invention.

[0031] In the figure: 1, hull; 2, first ladder; 3, second ladder; 4, winch; 5, lifting wheel group; 6, cable; 7, turning mechanism; 8, guide frame; 9, roller bracket; 71, turning ladder; 72, supporting platform; 73, ear plate; 74, hinge seat; 75, bottom support plate; 76, reinforcing rib; 77, guard frame; 78, grille plate; 79, angle plate; 710, locking plate; 711, bolting piece; 712, fixing frame; 713, guide rod; 714, screw drive module; 715, ladder roller; 716, clamping roller; 717, clamp plate; 718, transmission motor; 719, driven gear; 720, driving gear; 721, clamping platform. DETAILED DESCRIPTION

[0032] The present invention will be further described and illustrated below in conjunction with specific embodiments and accompanying drawings:

[0033] See also Figure 1-9 The present invention is a flip-type landing ladder for a boarding platform, and the technical solution adopted is: comprising a first ladder 2 and a second ladder 3 respectively connected to a hull 1 by sliding;

[0034] Two guide rail frames 8 and two roller brackets 9 are fixedly installed on the surface of the hull 1. The inner walls of the two guide rail frames 8 and the two roller brackets 9 are respectively slidably matched with the first ladder 2 and the second ladder 3. Rollers are equidistantly installed on the surface of the roller brackets 9.

[0035] By setting the guide rail frame 8 and the roller bracket 9, the movement direction of the first ladder 2 and the second ladder 3 can be effectively guided, and at the same time, by setting the guide rail frame 8 and the roller bracket 9, the movable positions of the first ladder 2 and the second ladder 3 can be effectively limited;

[0036] The first ladder 2 and the second ladder 3 are both inclined, and the angles between the first ladder 2 and the horizontal line and the angles between the second ladder 3 and the horizontal line are both 60°. The first ladder 2 and the second ladder 3 are inclined in opposite directions. When in use, the first ladder 2 and the second ladder 3 are respectively set up on both sides of the hull 1. By setting the inclination angles of the first ladder 2 and the second ladder 3, on the one hand, the ease of use for users can be effectively improved, and on the other hand, the support strength and stability of the first ladder 2 and the second ladder 3 during use can be effectively improved;

[0037] The first-stage ladder 2 and the second-stage ladder 3 both include a ladder frame, the inner wall of which is provided with a group of pedals distributed in a linear array, the surface of which is provided with two symmetrically arranged handrails, the bottom end of which is hinged with a footrest, the bottom surface of which is evenly covered with friction lines, and when working, the footrest at the bottom end of the ladder frame contacts with the hull 1 or the bottom surface, thereby supporting and limiting the ladder frame;

[0038] Two symmetrically arranged winches 4 and two symmetrically arranged hoisting wheel groups 5 are respectively installed on the surface of the hull 1. The ports of the two winches 4 are both wound with cables 6. The other ends of the two cables 6 are respectively fixedly connected to the first ladder 2 and the second ladder 3. The surfaces of the two cables 6 are respectively slidably matched with the two hoisting wheel groups 5. The two winches 4 are respectively arranged to change the positions of the first ladder 2 and the second ladder 3. By changing the positions of the first ladder 2 and the second ladder 3, the first ladder 2 and the second ladder 3 can be released and recovered.

[0039] A turnover mechanism 7 is installed on the surface of the hull 1 at positions corresponding to the bottom of the first ladder 2 and the middle of the second ladder 3. The first ladder 2 and the second ladder 3 are arranged adjacent to the turnover mechanism 7 at adjacent positions in a staggered manner.

[0040] The function of the turning ladder 71 is to serve as a medium for the user to climb onto the primary ladder 2 and the secondary ladder 3 . When the primary ladder 2 and the secondary ladder 3 are both recovered, the turning ladder 71 is stored in the hull 1 .

[0041] The turning mechanism 7 comprises a supporting platform fixedly connected to the hull 1 , a turning ladder 71 is hingedly connected to the inner wall of the supporting platform, and a clamping mechanism cooperating with the first ladder 2 and the second ladder 3 is installed on the bottom surface of the turning ladder 71 .

[0042] The support platform includes a support platform 72 fixedly connected to the hull 1, and two symmetrically arranged ear plates 73 are installed on the top surface of the support platform 72. Two symmetrically arranged hinge seats 74 are installed at the tail of the ladder 71. The inner walls of the two hinge seats 74 are respectively hinged to the two ear plates 73. A bottom support plate 75 cooperating with the ladder 71 is installed on the top surface of the support platform 72, and a group of reinforcing ribs 76 distributed in a linear array are installed on the inner wall of the support platform 72. Through the setting of the reinforcing ribs 76, the supporting strength and structural strength of the support platform are effectively improved. The support platform 72 and the reinforcing ribs 76 are both "L"-shaped structures.

[0043] A guard frame 77 is fixedly installed on the top surface of the ladder 71, and a mounting groove is fixedly opened inside the ladder 71. A grille plate 78 is clamped inside the mounting groove, and mesh holes are evenly distributed inside the grille plate 78. A number of regularly distributed angle plates 79 that cooperate with the bottom support plate 75 are installed on the bottom surface of the ladder 71. The guard frame 77 and the angle plates 79 are both "L"-shaped structures. Through the "L"-shaped structure of the guard frame 77, the user can quickly board the ladder 71 and enter the first ladder 2 or the second ladder 3 through the ladder 71. The structural setting of the guard frame 77 can effectively improve the safety of the ladder 71 when in use.

[0044] A locking plate 710 is fixedly installed on the surface of the guard frame 77, and a locking hole is fixedly opened on the surface of the locking plate 710. A bolting piece 711 cooperating with the locking hole is fixedly installed on the top surface of the support platform 72. The angle plate 79 is made of iron, and a magnet is built into the bottom support plate 75. The bolting piece 711 includes a bolt and a limiting nut threadedly connected to the bolt. When the ladder 71 is in the storage state, the bolting piece 711 cooperates with the locking hole to achieve effective positioning of the ladder 71 in the storage state. The iron material setting of the angle plate 79 and the structural setting of the magnet built into the bottom support plate 75 ensure that when the ladder 71 is in use, the bottom support plate 75 can effectively support and limit the ladder 71.

[0045] The ladder clamping mechanism includes a fixed frame 712 fixedly connected to the ladder 71, and two horizontally arranged guide rods 713 and a screw drive module 714 are fixedly installed on the surface of the fixed frame 712, and the inner wall of the fixed frame 712 is slidably connected to a clamping platform 721 through the two guide rods 713, and the inner wall of the clamping platform 721 is transmission-connected to the screw drive module 714;

[0046] The inner wall of the clamping platform 721 is rotatably connected to two pairs of ladder rollers 715, and the inner walls of the two ladder rollers 715 are rotatably connected to clamping rollers 716, and the ends of the two clamping rollers 716 are fixedly installed with clamp plates 717. A transmission motor 718 is installed inside the clamping platform 721, and the output shaft ends of the transmission motor 718 are respectively connected to the two clamping rollers 716.

[0047] The tail of the two clamping rollers 716 is fixedly installed with a driven gear 719, and the output shaft end of the transmission motor 718 is fixedly installed with a driving gear 720. The peripheral side surfaces of the driving gear 720 are respectively meshed with the two driven gears 719, and the transmission gear is arranged between the two driven gears 719. Through the meshing connection arrangement of the driving gear 720 and the driven gear 719, the transmission motor 718 can quickly change the layout angle of the clamping rollers 716. When the ladder 71 is not in use, the two clamping plates 717 are staggered with the first ladder 2 and the second ladder 3, thereby realizing the rapid storage of the ladder clamping mechanism. When the ladder 71 needs to be connected to the first ladder 2 or the second ladder 3 as one, the two clamping plates 717 clamp the first ladder 2 or the second ladder 3 from the outside of the first ladder 2 or the second ladder 3, respectively. After clamping, the effective limitation of the angle of the ladder 71 and the tight connection between the ladder 71 and the first ladder 2 or the second ladder 3 are realized.

[0048] The screw drive module 714 includes a driving motor and a horizontally arranged transmission screw. The peripheral side of the transmission screw is rotatably connected to the fixed frame 712, one surface of the driving motor is fixedly connected to the transmission screw, and the peripheral side of the transmission screw is transmission-connected to the clamping platform 721. Through the setting of the screw drive module 714, the clamping platform 721 can be quickly unfolded and stored.

[0049] The working principle of the present invention is as follows: when the landing ladder is not in use, the first ladder 2 and the second ladder 3 are fully retracted under the action of the winch 4, and the turning ladder 71 is fully flipped into the hull 1, thereby realizing the storage of the turning ladder 71. When the turning ladder 71 is stored, the cooperation between the bolting member 711 and the lock hole is realized to effectively limit the angle of the turning ladder 71. When it is needed to be used, the first ladder 2 and the second ladder 3 are released to a specified extent under the action of the winch 4. When the first ladder 2 and the second ladder 3 are flipped out, the roller bracket 9 and the guide rail bracket 8 effectively limit the movement direction and movement angle of the first ladder 2 and the second ladder 3. After the first ladder 2 and the second ladder 3 are unfolded, the turning ladder 71 is flipped to the outside of the hull 1, and finally the turning ladder 71 is parallel to the horizontal plane. When the user needs to perform landing operations, the turning ladder 71 can be used as a climbing platform for the user to board the first ladder 2 or the second ladder 3.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A flip-type landing ladder for a boarding platform, comprising a first ladder (2) and a second ladder (3) respectively connected to a hull (1) in a sliding manner, characterized in that: The surface of the hull (1) is respectively installed with two symmetrically arranged winches (4) and two symmetrically arranged hoisting wheel groups (5), the ports of the two winches (4) are both wound with cables (6), the other ends of the two cables (6) are respectively fixedly connected to the first ladder (2) and the second ladder (3), the surfaces of the two cables (6) are respectively slidably matched with the two hoisting wheel groups (5), and the surface of the hull (1) and the positions corresponding to the bottom of the first ladder (2) and the middle of the second ladder (3) are both installed with turning mechanisms (7); the turning mechanism (7) comprises a supporting platform fixedly connected to the hull (1), the inner wall of the supporting platform is hinged with a turning ladder (71), and the bottom surface of the turning ladder (71) is installed with a ladder clamping mechanism matched with the first ladder (2) and the second ladder (3); The support platform comprises a support platform (72) fixedly connected to the hull (1), the top surface of the support platform (72) is equipped with two symmetrically arranged ear plates (73), the tail of the ladder (71) is equipped with two symmetrically arranged hinge seats (74), the inner walls of the two hinge seats (74) are respectively hinged to the two ear plates (73), the top surface of the support platform (72) is equipped with a bottom support plate (75) cooperating with the ladder (71), the inner wall of the support platform (72) is equipped with a group of reinforcing ribs (76) distributed in a linear array, and the support platform (72) and the reinforcing ribs (76) are both "L"-shaped structures; A guard frame (77) is fixedly mounted on the top surface of the ladder (71); a mounting groove is fixedly opened inside the ladder (71); a grille plate (78) is clamped inside the mounting groove; mesh holes are evenly distributed inside the grille plate (78); a plurality of regularly distributed angle plates (79) that cooperate with the bottom support plate (75) are mounted on the bottom surface of the ladder (71); the guard frame (77) and the angle plates (79) are both "L"-shaped structures; the ladder clamping mechanism comprises a fixed frame (712) fixedly connected to the ladder (71); two horizontally arranged guide rods (713) and a thread drive module (714) are respectively fixedly mounted on the surface of the fixed frame (712); 714), the inner wall of the fixed frame (712) is slidably connected to a clamping platform (721) via two guide rods (713), the inner wall of the clamping platform (721) is transmission-connected to a screw drive module (714), the inner wall of the clamping platform (721) is rotationally connected to two pairs of ladder rollers (715), the inner walls of the two ladder rollers (715) are rotationally connected to clamping rollers (716), the ends of the two clamping rollers (716) are fixedly mounted with clamping plates (717), a transmission motor (718) is installed inside the clamping platform (721), and the output shaft ends of the transmission motor (718) are transmission-connected to the two clamping rollers (716) respectively.

2. The flip-type landing ladder for a boarding platform according to claim 1, characterized in that: A locking plate (710) is fixedly mounted on the surface of the guard frame (77), a locking hole is fixedly opened on the surface of the locking plate (710), a bolting member (711) matching the locking hole is fixedly mounted on the top surface of the support platform (72), the angle plate (79) is made of iron, and a magnet is built into the interior of the bottom support plate (75).

3. The flip-type landing ladder for a boarding platform according to claim 1, characterized in that: A driven gear (719) is fixedly mounted on the tail of each of the two clamping rollers (716), a driving gear (720) is fixedly mounted on the output shaft end of the transmission motor (718), the peripheral side surfaces of the driving gear (720) are respectively meshed with the two driven gears (719), and the driving gear is arranged between the two driven gears (719).

4. The flip-type landing ladder for a boarding platform according to claim 1, characterized in that: The screw drive module (714) comprises a drive motor and a horizontally arranged transmission screw, the peripheral side surface of the transmission screw being rotationally connected to the fixed frame (712), one surface of the drive motor being fixedly connected to the transmission screw, and the peripheral side surface of the transmission screw being transmission-connected to the clamping platform (721).

5. The flip-type landing ladder for a boarding platform according to claim 1, characterized in that: Two guide rail frames (8) and two roller brackets (9) are respectively fixedly mounted on the surface of the hull (1); the inner walls of the two guide rail frames (8) and the two roller brackets (9) are respectively slidably matched with the first ladder (2) and the second ladder (3); and rollers are equidistantly mounted on the surface of the roller brackets (9).

6. The flip-type landing ladder for a boarding platform according to claim 1, characterized in that: The first ladder (2) and the second ladder (3) are both arranged in an inclined manner, and the angle between the first ladder (2) and the horizontal line and the angle between the second ladder (3) and the horizontal line are both 60 degrees. The first ladder (2) and the second ladder (3) are inclined in opposite directions. The first ladder (2) and the second ladder (3) are arranged adjacent to the turning mechanism (7) at adjacent positions in an offset manner.

7. The flip-type landing ladder for a boarding platform according to claim 6, characterized in that: The first-stage ladder (2) and the second-stage ladder (3) both comprise a ladder frame, the inner wall of the ladder frame being provided with a group of pedals distributed in a linear array, the surface of the ladder frame being provided with two symmetrically arranged handrails, the bottom end of the ladder frame being hinged with a foot seat, the bottom surface of the foot seat being evenly covered with friction patterns.

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