Portable step ladder for ship's bed fitting

Abstract

The utility model relates to shipbuilding auxiliary tool technical field, concretely is a kind of portable step ladder for ship cradle cooperation, the step ladder includes fixed seat, plug-in rod, ladder bar, handrail rod and step plate, the lower end of fixed seat is fixedly connected plug-in rod, the lower end of plug-in rod is inserted into cradle steel pipe, the side of the part of plug-in rod upper end protruding cradle steel pipe is connected support bar, one end of support bar is fixedly connected with plug-in rod, the other end of support bar is connected hanging rod perpendicularly on both sides, the upper end of ladder bar is connected with the hook cooperation with hanging rod, ladder bar is sequentially connected step plate from top to bottom, the side of ladder bar is connected handrail rod, with Simple structure, portable, height adjustable, strong stability, high security, easy to carry and move and so on.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding auxiliary tools technology, specifically a lightweight step ladder for use with shipbuilding jigs. Background Technology

[0002] As is well known, in the field of shipbuilding and maintenance, ships are generally manufactured and maintained on a scaffold. The scaffold typically consists of multiple support columns evenly distributed on the ground, usually made of steel pipes. The base of the support columns is fixed to the ground, and the upper end supports the ship. When manufacturing and maintenance are carried out, ladders are needed for access. Traditional ladders, due to their weight, portability, height stability, and other issues, are difficult to meet the changing operational needs, especially during the shipbuilding phase when the hull structure frequently changes. Previously, temporary scaffolding had to be erected, resulting in long erection periods, high labor costs, insufficient safety, cumbersome setup and dismantling processes, high labor intensity, and difficulty in guaranteeing stability and sturdiness. Therefore, there is an urgent need for a lightweight, flexible, height-adjustable, stable, and safe step ladder. It should be easy to carry and move, firmly fixed to the scaffold, and have flexible height adjustment to adapt to various working heights, thereby effectively solving the problems of traditional straight ladders and temporary scaffolding, and improving operational efficiency and safety. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a lightweight step ladder for use with a ship frame that is simple in structure, lightweight and flexible, height adjustable, highly stable, safe, and easy to carry and move.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A lightweight step ladder for use with a ship frame is characterized in that the ladder includes a fixed base, a connecting rod, a ladder rod, a handrail, and treads. The lower end of the fixed base is fixedly connected to the connecting rod, the lower end of which is inserted into the steel pipe of the frame. The side of the portion of the connecting rod extending out of the steel pipe is connected to a support rod. One end of the support rod is fixedly connected to the connecting rod, and the other end of the support rod is vertically connected to hanging rods on both sides. The upper end of the ladder rod is connected to a hook that cooperates with the hanging rod. The ladder rod is connected to treads from top to bottom, and a handrail is connected to one side of the ladder rod.

[0006] The end of the hanging rod described in this utility model is connected to a baffle plate, which prevents the hook at the end of the ladder rod from detaching from the hanging rod.

[0007] The ladder rod described in this utility model has two hooks at the upper end. The hooks are bent downwards and hook onto the hanging rods on both sides of the support rod to ensure the stability of the ladder rod.

[0008] The lower end of the ladder rod described in this utility model is vertically connected to the ground contact rod, and the middle of the lower end of the ground contact rod is connected to the ladder rod, which increases the stability of the ladder in contact with the ground.

[0009] The ground-touching rod of this utility model is connected to one end of the handrail. The handrail includes an n-shaped handrail part and a rod-shaped connecting part. The rod-shaped connecting part is connected to the upper end side of the ladder rod. The open ends of the n-shaped handrail part are respectively connected to the end of the ground-touching rod and the end of the rod-shaped connecting part. The closed end of the n-shaped handrail part is used as a support handrail.

[0010] The treadle of this utility model includes a bottom connecting rod and a horizontal plate. The bottom connecting rod is fixedly connected to the ladder rod, the bottom of the horizontal plate is connected to the bottom connecting rod, and the contact part of the horizontal plate with the ladder rod is fixedly connected to ensure the stability of the horizontal plate, thereby ensuring the stability of the overall ladder structure.

[0011] The lower end of the fixing seat described in this utility model is symmetrically connected with hanging ears. The fixing seat is hoisted into and fixed inside the jig steel pipe by a hook rod or pushed out and hoisted into the outside of the fixing steel pipe.

[0012] The ladder rods described in this invention are configured with different heights, and the height of the ladder steps can be adjusted by replacing the ladder rods with different heights.

[0013] This utility model, due to the above-mentioned structure, has the advantages of simple structure, light weight and flexibility, adjustable height, strong stability, high safety, and easy portability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is the front view of this utility model.

[0016] Figure 3 yes Figure 1 A schematic diagram of the middle ladder rod.

[0017] Figure 4 yes Figure 1 A side view of the fixed plate and the connector rod.

[0018] Figure 5 yes Figure 3 Top view. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] As shown in the attached figure, a lightweight step ladder for use with a ship frame is characterized in that the step ladder includes a fixed base 1, a connecting rod 2, a ladder rod 3, a handrail 4, and a footboard 5. The lower end of the fixed base 1 is fixedly connected to the connecting rod 2, and the lower end of the connecting rod 2 is inserted into the steel pipe 6 of the frame. The side of the part of the connecting rod 2 that extends out of the steel pipe 6 is connected to a support rod 7. One end of the support rod 7 is fixedly connected to the connecting rod 2, and the other end of the support rod 7 is vertically connected to hanging rods 8 on both sides. The upper end of the ladder rod 3 is connected to a hook 10 that cooperates with the hanging rod 8. The footboard 5 is connected to the ladder rod 3 from top to bottom, and the handrail 4 is connected to one side of the ladder rod 3.

[0021] Furthermore, the end of the hanging rod 8 is connected to a baffle 9, which prevents the hook 10 at the end of the ladder rod 3 from detaching from the hanging rod 8.

[0022] Furthermore, the upper end of the ladder rod 3 is provided with two hooks 10, which are bent downwards and hooked onto the hanging rods 8 on both sides of the support rod 7 to ensure the stability of the ladder rod 3.

[0023] Furthermore, the lower end of the ladder rod 3 is vertically connected to the ground contact rod 11, and the lower middle part of the ground contact rod 11 is connected to the ladder rod 3, which increases the stability of the ladder in contact with the ground.

[0024] Furthermore, one end of the ground-touching rod 11 is connected to one end of the handrail 4. The handrail 4 includes an n-shaped handrail portion 12 and a rod-shaped connecting portion 13. The rod-shaped connecting portion 13 is connected to the upper side of the ladder rod 3. The open ends of the n-shaped handrail portion 12 are connected to the end of the ground-touching rod 11 and the end of the rod-shaped connecting portion 13, respectively. The closed end of the n-shaped handrail portion 12 is used as a supporting handrail.

[0025] Furthermore, the step 5 includes a bottom connecting rod 14 and a horizontal plate 15. The bottom connecting rod 14 is fixedly connected to the ladder rod 3, the bottom of the horizontal plate 15 is connected to the bottom connecting rod 14, and the horizontal plate 15 is fixedly connected to the contact part of the ladder rod 3 to ensure the stability of the horizontal plate 15, thereby ensuring the stability of the overall ladder structure.

[0026] Furthermore, the lower end of the fixed seat 1 is symmetrically connected to the hanging lugs 16, and the fixed seat 1 is hoisted into and fixed inside the frame steel pipe 6 by a hook rod or pushed out and hoisted out of the fixed steel pipe.

[0027] Furthermore, the ladder rods 3 are set to different heights, and the height of the steps can be adjusted by replacing the ladder rods 3 of different heights.

[0028] In use, this utility model first selects the corresponding height of the ladder rod 3 according to the height of the frame. After selecting the corresponding ladder rod 3, the lower connecting lug of the fixing seat 1 is hooked and lifted by the hook rod, and the upper part of the frame is moved. Then, the insertion rod 2 of the lower part of the fixing seat 1 is placed on the upper end of the frame steel pipe 6 and aligned with the opening of the steel pipe. Then, the fixing seat 1 is lowered, and the insertion rod 2 is inserted into the frame steel pipe 6. Then, the hook 10 of the upper end of the ladder rod 3 of the selected corresponding height is hooked on the hanging rod 8 connected to the support rod 7. The bottom contact rod 11 of the ladder rod 3 is placed on the ground. At this time, the installation of the step ladder is completed. When it needs to be disassembled, first remove the hook 10 of the ladder rod 3 from the hanging rod 8. Then, the fixing seat 1 is pushed upward by hooking the connecting lug of the lower part of the fixing seat 1 by the hook rod. Finally, the insertion rod 2 is pushed out from the frame steel pipe 6, thus completing the disassembly and assembly of the step ladder. Since the middle part of the step 5 is connected to the ladder rod 3, there is only one ladder rod 3. It can be controlled by the step rod. The width of the board 5 reduces the width of the ladder, allowing for installation of the ladder within a smaller area. In specific implementation, for work scenarios requiring frequent ascents and descents to higher sections, the number of boards 5 can be increased; for work scenarios with limited space, the width and height of the steps can be appropriately reduced. This patented solution greatly facilitates the flexible and efficient transfer of the ladder between multiple work locations. The surface of the board 5 is treated with anti-slip stripes to increase friction and prevent personnel from slipping when ascending or descending the ladder. In the above solution, the hanging rod is rod-shaped, directly passing through the insertion hole on the support rod and welded to the support rod to ensure the load-bearing capacity of the hanging rod. This patented ladder has undergone rigorous durability and safety performance tests. The test results show that the ladder can withstand sufficient loads and maintain structural stability. Due to the above structure, this utility model has the advantages of simple structure, lightweight and flexible, height adjustable, strong stability, high safety, and easy portability and movement.

Claims

1. A lightweight step ladder for use with a ship's wheel frame, characterized in that... The staircase includes a fixed base, a connecting rod, a ladder rod, a handrail, and treads. The lower end of the fixed base is fixedly connected to the connecting rod, the lower end of which is inserted into the steel pipe of the frame. The upper end of the connecting rod, which extends out of the steel pipe of the frame, is connected to a support rod. One end of the support rod is fixedly connected to the connecting rod, and the other end of the support rod is vertically connected to hanging rods on both sides. The upper end of the ladder rod is connected to a hook that cooperates with the hanging rod. The ladder rod is connected to the treads from top to bottom, and the handrail is connected to one side of the ladder rod.

2. The lightweight step ladder for use with a ship's wheel frame according to claim 1, characterized in that... The end of the hanging rod is connected to a baffle plate, which prevents the hook at the end of the ladder rod from detaching from the hanging rod.

3. A lightweight step ladder for use with a ship's wheel frame according to claim 1, characterized in that... The upper end of the ladder rod is provided with two hooks, which are bent downwards and hooked onto the hanging rods on both sides of the support rod.

4. A lightweight step ladder for use with a ship's wheel frame according to claim 1, characterized in that... The lower end of the ladder rod is vertically connected to the ground rod, and the lower middle part of the ground rod is connected to the ladder rod.

5. A lightweight step ladder for use with a ship's wheel frame according to claim 4, characterized in that... One end of the ground-touching rod is connected to one end of the handrail. The handrail includes an n-shaped handrail part and a rod-shaped connecting part. The rod-shaped connecting part is connected to the upper side of the ladder rod. The open ends of the n-shaped handrail part are respectively connected to the end of the ground-touching rod and the end of the rod-shaped connecting part. The closed end of the n-shaped handrail part is used as a support handrail.

6. A lightweight step ladder for use with a ship's tire rack according to claim 1, characterized in that... The treadle includes a bottom connecting rod and a horizontal plate. The bottom connecting rod is fixedly connected to the ladder rod, the bottom of the horizontal plate is connected to the bottom connecting rod, and the contact portion of the horizontal plate with the ladder rod is fixedly connected.

7. A lightweight step ladder for use with a ship's wheel frame according to claim 1, characterized in that... The lower end of the fixed seat is symmetrically connected to the hanging lugs. The fixed seat is hoisted into and fixed inside the steel pipe of the jig or pushed out and hoisted out of the fixed steel pipe by the hook rod.

8. A lightweight step ladder for use with a ship's tire rack according to claim 1, characterized in that... The ladder bars are set to different heights, and the height of the steps can be adjusted by changing the ladder bars of different heights.

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