Wharf ladder

Abstract

Ladder plates are inserted into the inner sides of two sets of U-shaped limiting grooves at the same height, limiting clamping blocks used in cooperation with the ladder plates are arranged in a ladder frame, each limiting clamping block comprises a rotating handle which can drive a rotating rod to rotate, and two sets of first bevel gears are installed on the outer side of the rotating rod. The first bevel gear is meshed with a second bevel gear arranged in the ladder frame, the second bevel gear is installed on the outer side of the driving rod, a gear is arranged on the outer side of the driving rod and meshed with a rack plate arranged in the moving groove, a moving plate is fixedly installed at one end of the rack plate, and a clamping block is installed on the side, close to the ladder plate, of the moving plate. And clamping block grooves matched with the clamping blocks are formed in the ladder plates. According to the wharf ladder, in order to solve the problems that ladder plates and ladder assemblies of an existing wharf ladder are fixedly connected, and when the ladder plates are damaged due to treading, the ladder plates are very inconvenient to replace, the two ladder assemblies are connected through a plurality of sets of connecting rods, and a plurality of sets of U-shaped limiting grooves are formed in the inner sides of the ladder assemblies.

Description

Technical Field

[0001] The utility model relates to the technical field of dock ladders, and specifically relates to a dock ladder. Background Art

[0002] A dock ladder is a device used to help people get on and off ships safely. Especially when a large oil tanker docks at a wharf for loading and unloading operations, it ensures that the operating personnel and crew can enter and exit the ship smoothly and safely. The dock ladder is diverse in design and material, including gangways and gangplanks made of aluminum alloy. These ladders and gangplanks can not only bear a certain weight but also adapt to different weather conditions to ensure the safety of use. In addition, there are various types of dock ladders, including fixed and telescopic types, to meet different usage requirements and environmental conditions.

[0003] After retrieval, it is found that in the prior art, such as the flip-type dock ladder with the publication number CN207389470U, which includes a guardrail, a tread, a ladder frame, and a fixing member. The tread is fixedly installed on the ladder frame, and the tread is parallel to the installation plane; there is a support frame at the upper end of the ladder frame, the support frame is located on the installation plane, and the support frame is parallel to the installation plane; a bend is provided at the front end of the support frame, and the included angle between the bend and the support frame is 90°. The bend is hinged to the fixing member, and the fixing member is fixed to the installation plane by bolts; the guardrail is installed on the ladder frame; it is suitable for medium and small-sized ships, and has a simple structure, is convenient to manufacture, and is easy to use.

[0004] To sum up, the existing dock ladder has a simple structure, is convenient to manufacture, and is easy to use. However, the tread of the existing dock ladder is fixedly connected to the ladder frame, and it is very inconvenient to replace the tread when it is damaged due to trampling. Therefore, a dock ladder is proposed to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a dock ladder to solve the problem that the tread of the existing dock ladder is fixedly connected to the ladder frame in the above background art, and it is very inconvenient to replace the tread when it is damaged due to trampling.

[0006] To achieve the above object, the present utility model provides the following technical solution: A dock ladder, comprising a ladder frame, wherein a support frame is provided at the upper end of the ladder frame, and an elbow is provided at the front end of the support frame, and the included angle between the elbow and the support frame is 90°. A plurality of connecting rods are connected between the two ladder frames, and a plurality of U-shaped limit grooves are installed inside the ladder frame. A ladder board is inserted inside the two U-shaped limit grooves at the same height, and a limit block for cooperating with the ladder board is arranged inside the ladder frame. The limit block includes a turning handle, and the turning handle can drive a rotating rod arranged inside the connecting rod to rotate. Two first bevel gears are installed on the outer side of the rotating rod, and the first bevel gears are engaged with second bevel gears arranged inside the ladder frame. The second bevel gear is installed on the outer side of the driving rod, and a gear is arranged on the outer side of the driving rod. The gear is engaged with a rack plate arranged inside the moving groove, and a moving plate is fixedly installed at one end of the rack plate. A block is installed on one side of the moving plate close to the ladder board, and a block groove matching the block is opened on the ladder board.

[0007] Preferably, a groove is opened at the top of the ladder board, and a water absorption layer is arranged inside the groove. A plurality of drain holes penetrating the ladder board are arranged at the bottom of the groove.

[0008] Through the above technical solution: It is convenient for water absorption.

[0009] Preferably, a non-slip layer is arranged at the top outside the ladder board, and the non-slip layer is located above the water absorption layer.

[0010] Through the above technical solution: The anti-slip effect is improved.

[0011] Preferably, the non-slip layer is made of latex material, and a plurality of liquid discharge holes are opened on the surface of the non-slip layer, and anti-slip convex points are arranged between the liquid discharge holes.

[0012] Through the above technical solution: The anti-slip effect is improved.

[0013] Preferably, the moving plate is slidably connected inside the moving groove.

[0014] Through the above technical solution: It is convenient for the moving plate to move.

[0015] Preferably, a block moving through groove matching the block is opened on the U-shaped limit groove.

[0016] Through the above technical solution: It is convenient for the block to move.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: For this dock ladder, to solve the problem that the ladder board and the ladder frame of the existing dock ladder are fixedly connected and it is very inconvenient to replace the ladder board when it is damaged due to trampling, several groups of connecting rods are connected between two groups of ladder frames, and several groups of U-shaped limit grooves are installed inside the ladder frames. A ladder board is inserted inside the two U-shaped limit grooves at the same height, and a limit block used in cooperation with the ladder board is arranged inside the ladder frame. The limit block includes a turning handle, and the turning handle can drive a rotating rod arranged inside the connecting rod to rotate. Two first bevel gears are installed on the outer side of the rotating rod, and the first bevel gears are engaged with second bevel gears arranged inside the ladder frame. The second bevel gears are installed on the outer side of a driving rod, and a gear is arranged on the outer side of the driving rod. The gear is engaged with a rack plate arranged inside a moving groove, and one end of the rack plate is fixedly installed with a moving plate. A block is installed on one side of the moving plate close to the ladder board, and a block groove matching with the block is formed on the ladder board. When the ladder board needs to be replaced, rotate the turning handle, and under the action of the turning handle, the block moves. When the block completely disengages from the inside of the block groove, the ladder board can be separated from the U-shaped limit groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic front sectional structure view of the whole of the present utility model;

[0019] Figure 2 It is a schematic diagram of the positional relationship between the water absorption layer and the anti-slip layer of the present utility model;

[0020] Figure 3 It is a schematic structure view of the anti-slip layer of the present utility model;

[0021] Figure 4 It is a schematic structure view of the limit block of the present utility model;

[0022] Figure 5 For the present utility model Figure 4 The enlarged structure view at position A in it.

[0023] In the figure: 1, ladder frame; 2, support frame; 3, elbow; 4, connecting rod; 5, U-shaped limit groove; 6, ladder board; 601, water absorption layer; 6011, drain hole; 602, anti-slip layer; 6021, liquid discharge hole; 6022, anti-slip bump; 7, limit block; 701, turning handle; 702, rotating rod; 703, first bevel gear; 704, second bevel gear; 705, driving rod; 706, gear; 707, rack plate; 708, moving plate; 709, block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-5 , the present utility model provides a technical solution: a dock ladder, a support frame 2 is provided at the upper end of the ladder frame 1, and an elbow 3 is provided at the front end of the support frame 2. The included angle between the elbow 3 and the support frame 2 is 90°. The elbow 3 is hinged to a fixing member, and the fixing member is fixed to the installation plane by bolts.

[0026] Specifically, several groups of connecting rods 4 are connected between the two groups of ladder frames 1, and several groups of U-shaped limiting grooves 5 are installed inside the ladder frame 1. A ladder board 6 is inserted inside the two U-shaped limiting grooves 5 at the same height. The setting of the connecting rod 4 can increase the integrity between the two groups of ladder frames 1. When the ladder board 6 breaks, the connecting rod 4 can also play a supporting role to improve the safety protection performance. The setting of the U-shaped limiting groove 5 can also play a certain role in restricting the position of the ladder board 6.

[0027] Specifically, a limiting block 7 for cooperating with the ladder board 6 is arranged inside the ladder frame 1. The limiting block 7 includes a rotating handle 701, and a bolt hole is opened on the rotating handle 701. In the later stage, the rotating handle 701 can be limited by a fixing bolt to prevent the rotating handle 701 from rotating. And the rotating handle 701 can drive a rotating rod 702 arranged inside the connecting rod 4 to rotate. Two first bevel gears 703 are installed on the outer side of the rotating rod 702, and the first bevel gears 703 are meshed with second bevel gears 704 arranged inside the ladder frame 1. The second bevel gears 704 are installed on the outer side of a driving rod 705, and a gear 706 is arranged on the outer side of the driving rod 705. The gear 706 is meshed with a rack plate 707 arranged inside a moving groove. One end of the rack plate 707 is fixedly installed with a moving plate 708. The moving plate 708 is slidably connected inside the moving groove. A clamping block 709 is installed on one side of the moving plate 708 close to the ladder board 6, and a clamping block groove matching with the clamping block 709 is opened on the ladder board 6.

[0028] Further explanation, a clamping block moving through groove matching with the clamping block 709 is opened on the U-shaped limiting groove 5, which is convenient for the clamping block 709 to move in the later stage.

[0029] When it is necessary to take out the ladder board 6 from the inner sides of the two groups of U-shaped limit grooves 5 for replacement, rotate the rotary handle 701. Under the action of the rotary handle 701, the rotary rod 702 rotates. The rotary rod 702 can drive the two groups of first helical gears 703 to rotate synchronously. Since the first helical gear 703 meshes with the second helical gear 704 arranged inside the ladder frame 1, the second helical gear 704 and the driving rod 705 can be driven to rotate. The driving rod 705 drives the gear 706 to rotate synchronously. Under the action of the rotation of the gear 706, the rack plate 707 drives the moving plate 708 to move, so as to drive the clamping block 709 to move through the moving plate 708. When the clamping block 709 completely disengages from the inside of the clamping block groove, the ladder board 6 can be separated from the U-shaped limit groove 5.

[0030] Specifically, a groove is formed at the top of the ladder board 6, and a water absorption layer 601 is arranged inside the groove. The width of the groove is smaller than the width of the human foot sole. Therefore, when the foot steps on the ladder board 6, the groove can prevent the water absorption layer 601 from deforming excessively, so that the water absorbed inside it overflows under the action of pressure. A plurality of groups of drain holes 6011 penetrating through the ladder board 6 are arranged at the bottom of the groove. The arrangement of the drain holes 6011 can drain the water when the water absorption layer 601 absorbs a sufficient amount of water.

[0031] Specifically, a non-slip layer 602 is arranged at the top of the outer side of the ladder board 6, and the non-slip layer 602 is located above the water absorption layer 601. The water absorption layer 601 is made of polyurethane material with high elasticity and good moisture absorption and air permeability. The non-slip layer 602 is made of latex material, and a plurality of groups of liquid discharge holes 6021 are formed on the surface of the non-slip layer 602. Anti-slip convex points 6022 are arranged between the liquid discharge holes 6021.

[0032] During use, the water droplets remaining on the sole will enter the liquid discharge holes 6021 and be absorbed by the water absorption layer 601 communicated with the liquid discharge holes 6021, thereby reducing the accumulation of water on the surface of the non-slip layer 602, and further achieving the effect of moisture absorption and anti-slip. A plurality of anti-slip convex points 6022 are arranged on the surface of the non-slip layer 602. The anti-slip convex points 6022 can increase the static friction force between the sole and the contact surface of the non-slip layer 602, so as to further improve the anti-slip performance of the non-slip layer 602.

[0033] The orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of simplifying the description of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the protection scope of the present invention.

[0034] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A dock ladder, comprising a ladder frame (1), wherein a support frame (2) is arranged at the upper end of the ladder frame (1), and an elbow (3) is arranged at the front end of the support frame (2), and the included angle between the elbow (3) and the support frame (2) is 90°, and it is characterized in that: Two sets of the ladder frames (1) are connected by a plurality of sets of connecting rods (4), and a plurality of sets of U-shaped limit grooves (5) are installed inside the ladder frames (1). A ladder board (6) is inserted inside the two U-shaped limit grooves (5) at the same height, and a limit clamping block (7) used in cooperation with the ladder board (6) is arranged inside the ladder frames (1). The limit clamping block (7) includes a rotating handle (701), and the rotating handle (701) can drive a rotating rod (702) arranged inside the connecting rod (4) to rotate. Two first bevel gears (703) are installed on the outer side of the rotating rod (702), and the first bevel gears (703) are meshed with second bevel gears (704) arranged inside the ladder frames (1). The second bevel gears (704) are installed on the outer side of a driving rod (705), and a gear (706) is arranged on the outer side of the driving rod (705). The gear (706) is meshed with a rack plate (707) arranged inside a moving groove, and a moving plate (708) is fixedly installed at one end of the rack plate (707). A clamping block (709) is installed on one side of the moving plate (708) close to the ladder board (6), and a clamping block groove matching the clamping block (709) is formed on the ladder board (6).

2. The dock ladder according to claim 1, characterized in that: A groove is formed at the top of the ladder board (6), and a water absorption layer (601) is arranged inside the groove. A plurality of drainage holes (6011) penetrating through the ladder board (6) are arranged at the bottom of the groove.

3. A dock ladder according to claim 1, characterized in that: An anti-slip layer (602) is arranged at the top of the outer side of the ladder board (6), and the anti-slip layer (602) is located above the water absorption layer (601).

4. A dock ladder according to claim 3, characterized in that: The anti-slip layer (602) is made of latex material, and a plurality of liquid drainage holes (6021) are formed on the surface of the anti-slip layer (602). Anti-slip convex points (6022) are arranged between the liquid drainage holes (6021).

5. A dock ladder according to claim 1, characterized in that: The moving plate (708) is slidably connected inside the moving groove.

6. The dock ladder according to claim 1, characterized in that: A clamping block moving through groove matching the clamping block (709) is formed on the U-shaped limit groove (5).

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