Stable and safe boarding ladder

Abstract

The utility model relates to the technical field of boarding ladders, in particular to a stable and safe boarding ladder which comprises a boarding ladder body, a mounting plate is fixedly connected to the top end of the boarding ladder body, a clamping groove used for being clamped on a ship or a wharf is formed in the mounting plate, the left portion and the right portion of the top face of the mounting plate are both fixedly connected with one end of a rope, and the other end of the rope is fixedly connected with a ratchet bar. Locking mechanisms used for locking the ratchet bars are arranged on the left portion and the right portion of the front side face of the mounting plate. The ratchet bar, the ratchet wheel and other components are arranged, during locking and when the ratchet bar is inserted into the locking box, the ratchet bar extrudes the ratchet wheel, the movable rod moves in the sliding groove of the locking box, the sliding plate slides in the second guide rod, the ratchet wheel and the ratchet bar are meshed with each other, and by means of the self-locking property of the ratchet wheel and the ratchet bar, locking is achieved. The rope is fixed by the rope fixing device, so that the boarding ladder can be fixed on the fixing bracket, accidental unlocking or loosening can be prevented, and the safety is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boarding ladders, in particular to a stable and safe boarding ladder. Background Art

[0002] With the rapid development of the ship transportation industry, as a key device connecting ships and docks, the safety of boarding ladders has been increasingly emphasized. A boarding ladder is a device for passengers and crew to safely and smoothly get on and off ships. Its general structure includes components such as a ladder body, handrails, and a buckle structure for fixing the ladder body. When the existing boarding ladders are in use, the buckles are prone to being in an open state, resulting in insufficient stability of the boarding ladders and easily causing safety accidents. In view of this, the utility model proposes a stable and safe boarding ladder to solve the problem that when the existing boarding ladders are in use, the buckles are prone to being in an open state, resulting in insufficient stability of the boarding ladders and easily causing safety accidents. Summary of the Utility Model

[0003] In order to overcome the shortcomings that when the existing boarding ladders are in use, the buckles are prone to being in an open state, resulting in insufficient stability of the boarding ladders and easily causing safety accidents, the purpose of the utility model is to provide a stable and safe boarding ladder.

[0004] The technical solution is as follows: A stable and safe boarding ladder includes a boarding ladder. An installation plate is fixedly connected to the top end of the boarding ladder. A card slot for clamping on a ship or a dock is arranged on the installation plate. One ends of ropes are fixedly connected to the left and right parts of the top surface of the installation plate. The other ends of the ropes are fixedly connected to ratchet racks. Locking mechanisms for locking the ratchet racks are arranged on the left and right parts of the front side of the installation plate. An unlocking mechanism for unlocking is also connected to the locking mechanism. An activity slot for facilitating the movement of the ropes is arranged on the installation plate. A secondary locking mechanism for preventing the ropes from breaking is also arranged on the installation plate.

[0005] More preferably, the locking mechanism includes locking boxes fixedly connected to the left and right parts of the front side of the installation plate. A sliding groove is arranged on the locking box. A moving rod is slidably connected in the sliding groove. A ratchet gear is fixedly connected to the moving rod.

[0006] More preferably, the unlocking mechanism includes an unlocking box fixedly connected to the front side of the locking box. A fixed block is fixedly connected inside the unlocking box. At least two first guide rods are fixedly connected to the side surface of the fixed block. A sliding plate is slidably connected to the first guide rods. The sliding plate is fixedly connected to the moving rod. A first elastic member is arranged between the sliding plate and the fixed block. Two ends of the first elastic member are respectively fixedly connected to the sliding plate and the fixed block. A second guide rod is fixedly connected inside the unlocking box. A push plate is slidably connected to the second guide rod. A lead screw is rotatably connected inside the unlocking box. The push plate is threadedly connected to the lead screw.

[0007] More preferably, one end of the lead screw penetrates through the unlocking box and extends to the outside, and is provided with an internal hexagonal groove.

[0008] More preferably, the secondary locking mechanism includes at least four third guide rods fixedly connected to the front side of the mounting plate. A sliding groove is provided on the mounting plate, and a clamping block is slidably connected in the sliding groove. A second elastic member is wound around the third guide rod, and both ends of the second elastic member are fixedly connected to the clamping block and the third guide rod respectively.

[0009] More preferably, an electric push rod is installed on the bottom surface of the boarding ladder. A pushing block is fixedly connected to the telescopic rod of the electric push rod, and the pushing block is in contact with the clamping block.

[0010] More preferably, the rope is made of nylon. Beneficial effects

[0011] 1. The utility model is provided with components such as a rope, a ratchet rack and a ratchet gear. When locking, when the ratchet rack is inserted into the locking box, the ratchet rack presses the ratchet gear, so that the moving rod moves in the sliding groove of the locking box, and then the sliding plate slides in the second guide rod. Then, the ratchet gear meshes with the ratchet rack, and the rope is fixed by using the self-locking property of the ratchet gear and the ratchet rack. Thus, the boarding ladder can be fixed on the fixed bracket, preventing accidental unlocking or loosening, and further improving the safety.

[0012] 2. The utility model is provided with an unlocking mechanism. When unlocking is required, an inner hexagon wrench is used to rotate the screw rod, so that the push plate moves to the right. Then, the push plate contacts the sliding plate, and the sliding plate moves to the right, so that the ratchet gear moves to the right. Then, the ratchet gear no longer meshes with the ratchet rack, and the unlocking is completed. The unlocking process is simple.

[0013] 3. The utility model is provided with a secondary locking mechanism, which provides additional protection and further enhances the overall safety of the utility model. Description of the drawings

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is another three-dimensional structural schematic diagram of the utility model.

[0016] Figure 3 It is a schematic diagram of components such as the mounting plate, the rope and the ratchet rack of the utility model.

[0017] Figure 4 It is an exploded view of components such as the electric push rod, the clamping block and the mounting plate of the utility model.

[0018] Figure 5 It is an exploded view of the locking box and the ratchet gear of the utility model.

[0019] Figure 6 It is a sectional view of the unlocking mechanism of the utility model.

[0020] The markings of each component in the attached drawings are as follows: 1. boarding ladder, 2. mounting plate, 201. card slot, 202. movable slot, 203. sliding slot, 3. rope, 4. ratchet rack, 501. locking box, 5011. sliding slot, 502. moving rod, 503. ratchet gear, 601. unlocking box, 602. fixing block, 603. first guide rod, 604. sliding plate, 605. first elastic member, 606. second guide rod, 607. pushing plate, 608. lead screw, 6081. internal hexagonal slot, 701. third guide rod, 702. clamping block, 703. second elastic member, 711. electric push rod, 712. pushing block. Specific embodiments

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] A stable and safe boarding ladder, as Figures 1 - 6 shown, includes a boarding ladder 1. The top end of the boarding ladder 1 is fixedly connected with a mounting plate 2. A card slot 201 for clamping on a ship or a dock is arranged on the mounting plate 2. One ends of ropes 3 are fixedly connected to the left and right parts of the top surface of the mounting plate 2. The other ends of the ropes 3 are fixedly connected with a ratchet rack 4. The ropes 3 are made of nylon, and nylon has excellent tensile strength, so that nylon can bear a large load and is not easy to break. Locking mechanisms for locking the ratchet rack 4 are arranged on the left and right parts of the front side surface of the mounting plate 2. An unlocking mechanism for unlocking is also connected to the locking mechanism. The mounting plate 2 is provided with a movable slot 202 for facilitating the movement of the ropes 3. A secondary locking mechanism for preventing the ropes 3 from breaking is also arranged on the mounting plate 2. The secondary locking mechanism can provide additional protection and further enhance the safety of the boarding ladder.

[0023] Specifically, the locking mechanism includes locking boxes 501 fixedly connected to the left and right sides of the front surface of the mounting plate 2. A sliding groove 5011 is provided on the locking box 501, and a moving rod 502 is slidably connected in the sliding groove 5011. A ratchet gear 503 is fixedly connected to the moving rod 502. The unlocking mechanism includes an unlocking box 601 fixedly connected to the front surface of the locking box 501. A fixed block 602 is fixedly connected inside the unlocking box 601. Two first guide rods 603 are fixedly connected to the side surface of the fixed block 602. A sliding plate 604 is slidably connected to the first guide rods 603. The sliding plate 604 is fixedly connected to the moving rod 502. A first elastic member 605 is provided between the sliding plate 604 and the fixed block 602. The two ends of the first elastic member 605 are respectively fixedly connected to the sliding plate 604 and the fixed block 602, and the first elastic member 605 is in a compressed state. The first elastic member 605 is a spring. A second guide rod 606 is fixedly connected inside the unlocking box 601. A push plate 607 is slidably connected to the second guide rod 606. A lead screw 608 is rotatably connected inside the unlocking box 601. One end of the lead screw 608 passes through the unlocking box 601 and extends to the outside, and is provided with an internal hexagonal groove 6081. The push plate 607 is threadedly connected to the lead screw 608. Among them, both the lead screw 608 and the second guide rod 606 pass through the sliding plate 604 and do not contact the sliding plate 604.

[0024] Specifically, the secondary locking mechanism includes at least four third guide rods 701 fixedly connected to the front surface of the mounting plate 2. A sliding groove 203 is provided on the mounting plate 2, and a clamping block 702 is slidably connected in the sliding groove 203. A second elastic member 703 is coiled around the third guide rods 701. The two ends of the second elastic member 703 are respectively fixedly connected to the clamping block 702 and the third guide rods 701. The second elastic member 703 is a spring. An electric push rod 711 is installed on the bottom surface of the boarding ladder 1. A pushing block 712 is fixedly connected to the telescopic rod of the electric push rod 711. The pushing block 712 is in contact with the clamping block 702.

[0025] During operation, a fixed bracket designed specifically for the boarding ladder 1 is usually installed on a ship or a dock. Then, the card slot 201 of the mounting plate 2 is snapped onto the fixed bracket on the ship or the dock. When snapping in, the fixed bracket presses against the clamping block 702, causing the clamping block 702 to slide within the sliding slot 203. Furthermore, the clamping block 702 presses against the second elastic member 703, deforming the second elastic member 703. Then, the fixed bracket snaps into the card slot 201 of the mounting plate 2. Subsequently, the second elastic member 703 drives the clamping block 702 to reset, thereby fixing the boarding ladder 1 onto the fixed bracket on the ship or the dock. Next, the ratchet rack 4 is inserted into the locking box 501. Then, the ratchet rack 4 pulls the rope 3, making the rope 3 taut. Further, the rope 3 fixes the fixed bracket within the card slot 201 of the mounting plate 2. At the same time, when the ratchet rack 4 is inserted into the locking box 501, the ratchet rack 4 presses against the ratchet gear 503, causing the moving rod 502 to move within the sliding slot 5011 of the locking box 501. Further, the sliding plate 604 slides within the second guide rod 606. Then, the ratchet gear 503 meshes with the ratchet rack 4, and by utilizing the self-locking property of the ratchet gear 503 and the ratchet rack 4, the rope 3 is fixed, and thus the boarding ladder 1 can be fixed onto the fixed bracket, preventing accidental unlocking or loosening and further enhancing safety.

[0026] When unlocking is required, an Allen wrench is used to rotate the screw rod 608, causing the push plate 607 to move to the right. Then, the push plate 607 comes into contact with the sliding plate 604, and the sliding plate 604 moves to the right, causing the ratchet gear 503 to move to the right. Then, the ratchet gear 503 no longer meshes with the ratchet rack 4. At the same time, the electric push rod 711 is activated, and the telescopic rod of the electric push rod 711 retracts, driving the pushing block 712 to retract. Then, the pushing block 712 comes into contact with the clamping block 702, causing the clamping block 702 to no longer hold the fixed bracket, thus completing the unlocking process, which is simple and convenient.

[0027] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly, and shall not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A stable and safe boarding ladder, comprising a boarding ladder (1), characterized in that: The top of the boarding ladder (1) is fixedly connected to a mounting plate (2), the mounting plate (2) is provided with a clamping groove (201) for clamping on a ship or a dock, the left and right parts of the top surface of the mounting plate (2) are fixedly connected to one end of a rope (3), the other end of the rope (3) is fixedly connected to a ratchet bar (4), the left and right parts of the front side surface of the mounting plate (2) are provided with a locking mechanism for locking the ratchet bar (4), the locking mechanism is also connected to an unlocking mechanism for unlocking, the mounting plate (2) is provided with a movable groove (202) for facilitating the movement of the rope (3), and the mounting plate (2) is also provided with a secondary locking mechanism for preventing the rope (3) from breaking.

2. A stable and safe boarding ladder according to claim 1, characterized in that: The locking mechanism comprises a locking box (501) fixedly connected to the left and right parts of the front side of the mounting plate (2); a sliding groove (5011) is provided on the locking box (501); a moving rod (502) is slidably connected in the sliding groove (5011); and a ratchet gear (503) is fixedly connected to the moving rod (502).

3. A stable and safe boarding ladder according to claim 2, characterized in that: The unlocking mechanism comprises an unlocking box (601) fixedly connected to the front side of the locking box (501), a fixed block (602) fixedly connected inside the unlocking box (601), at least two first guide rods (603) fixedly connected to the side of the fixed block (602), a sliding plate (604) slidably connected to the first guide rod (603), the sliding plate (604) is fixedly connected to the moving rod (502), a first elastic member (605) is arranged between the sliding plate (604) and the fixed block (602), two ends of the first elastic member (605) are respectively fixedly connected to the sliding plate (604) and the fixed block (602), a second guide rod (606) fixedly connected inside the unlocking box (601), a push plate (607) slidably connected to the second guide rod (606), a screw rod (608) rotatably connected inside the unlocking box (601), and the push plate (607) is threadedly connected to the screw rod (608).

4. A stable and safe boarding ladder according to claim 3, characterized in that: One end of the screw rod (608) passes through the unlocking box (601) and extends to the outside, and is provided with a hexagonal socket (6081).

5. A stable and safe boarding ladder according to claim 4, characterized in that: The secondary locking mechanism comprises at least four third guide rods (701) fixedly connected to the front side of the mounting plate (2); a sliding groove (203) is provided on the mounting plate (2); a clamping block (702) is slidably connected in the sliding groove (203); a second elastic member (703) is coiled on the third guide rod (701); and two ends of the second elastic member (703) are respectively fixedly connected to the clamping block (702) and the third guide rod (701).

6. A stable and safe boarding ladder according to claim 5, characterized in that: An electric push rod (711) is installed on the bottom surface of the boarding ladder (1), a push block (712) is fixedly connected to the telescopic rod of the electric push rod (711), and the push block (712) and the clamping block (702) are in contact with each other.

7. A stable and safe boarding ladder according to claim 6, characterized in that: The rope (3) is made of nylon.

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