Hot galvanizing U-shaped crawling ladder for electric power
By installing limiting, ground-contact, and ceiling-expanding components on the ladder, the problem of ladder instability was solved, achieving close contact between the ladder and the wall and floor, thus improving stability and safety.
Patent Information
- Application Number
- CN202423069766.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing electric ladders are prone to wobbling during use if not placed properly, leading to instability and posing a safety hazard.
Limiting components, ground-contact components, and expansion components are installed on the main body of the ladder. Through threaded connections and rotating structures, the ladder achieves tight contact with the wall and the ground, limiting swaying and backward slippage.
It improves the stability of the ladder, prevents swaying and slipping, ensures that the ladder is in close contact with the wall and the ground, and enhances the safety and convenience of use.
Smart Images

Figure CN223739297U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of ladders, and in particular to a hot-dip galvanized U-shaped ladder for power applications. Background Technology
[0002] U-shaped ladders are a common vertical movement tool that plays an important role in various fields such as construction, industry, and outdoor work. They are also widely used in electrical work. However, existing ladders rely on a wall for support, which can easily lead to instability and swaying, posing a safety hazard in electrical work.
[0003] Chinese Patent Publication No. CN221119803U, published on June 1, 2024, discloses a ladder, comprising: a ladder body and a fixing structure. The ladder body includes two ladder columns and multiple ladder rungs, with each rung sequentially connected between the two ladder columns. The fixing structure includes an elastic fixing component and a flexible fixing component. The elastic fixing component is connected between the two ladder columns and is located between one end of a ladder column and an adjacent rung. One end of the flexible fixing component is fixedly connected to one end of one ladder column, and the other end is detachably connected to one end of the other ladder column. The elastic fixing component and the flexible fixing component together form a support ring around the perimeter of a support, thereby fixing the ladder body to the support when it overlaps with the support. A drawback of this invention is that the device lacks stabilizing components at the top and bottom, making it prone to swaying. Utility Model Content
[0004] This invention aims to overcome the shortcomings of existing technologies that are prone to shaking due to improper placement, and provides a hot-dip galvanized U-shaped ladder for power applications that can improve the stability of the ladder.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A hot-dip galvanized U-shaped ladder for power applications includes a ladder body, a limiting component installed at the upper end of the ladder body and threadedly connected to the ladder body, a ground-contact component installed at the lower end of the ladder body and rotatably connected to the ladder body, and an expansion component provided on the ladder body, one end of the expansion component contacting the ground-contact component.
[0007] The main body of the ladder is used for climbing. A limiting component is installed at the upper end of the ladder to restrict the upper part of the ladder body, ensuring a tight contact between the ladder body and the wall and preventing the upper part of the ladder from swaying. A ground-attaching component is installed at the lower end of the ladder body, which is in contact with the ground to prevent the ladder from slipping backward during work. An expansion component is installed on the ladder body, which contacts the ground-attaching component to ensure a tight contact between the ground-attaching component and the ground, thereby improving the stability of the ladder.
[0008] Preferably, the ladder body is equipped with an installation plate. The limiting component includes a screw and a pressing block. The screw is threadedly connected to the installation plate, and a handwheel is installed at the other end of the screw. The pressing block is located at the other end of the screw, with one side rotatably connected to the screw and the other side having several evenly distributed circumferential spikes. The upper end of the ladder body is equipped with an installation plate, and the limiting component is mounted on the installation plate. The screw of the limiting component is threadedly connected to the installation plate. The pressing block is installed on the side of the screw facing the wall and is rotatably connected to the screw. The inclination of the pressing block allows for better contact with the wall. Several circumferentially distributed spikes are installed on the pressing block, positioned between the pressing plate and the wall. Rotating the handwheel drives the screw forward, and then the pressing block on the screw drives the spikes to press against the wall. This design reduces the left-right swaying of the ladder body.
[0009] Preferably, ground-attaching components are installed on both sides of the ladder body. Each ground-attaching component includes a floor panel. The ladder body has two rotating plates, and one end of the floor panel is rotatably connected to one of the rotating plates on each side. The bottom surface of the other end of the floor panel has several evenly distributed spikes. Ground-attaching components are also installed on both sides of the lower end of the ladder body. The floor panels of these components are rotatably connected to the rotating plates on the ladder body. After the ladder body is placed, the rotating floor panel is brought into contact with the ground, and the spikes on the bottom surface of the floor panel contact the ground, restricting the position of the lower end of the ladder body and preventing it from sliding backward. This design effectively prevents the ladder body from sliding backward.
[0010] Preferably, the ladder body has a storage slot, and the expansion cap assembly is installed in the storage slot. The expansion cap assembly includes a second screw and a rotating rod. One end of the second screw is placed in the storage slot and rotatably connected to the ladder body. One end of the rotating rod has a threaded hole, and the other end of the second screw is placed in the threaded hole and threadedly connected to the rotating rod. A contact block is installed on the other end of the rotating rod. A compression frame is installed on the top surface of the flooring, and the contact block contacts the compression frame. To ensure a tight contact between the flooring assembly and the ground, the expansion cap assembly is installed on the ladder body. The expansion cap assembly is installed in the storage slot for easy storage. When it is necessary to press the flooring tightly, the rotating rod is rotated. Since the rotating rod is threadedly connected to the second screw, the rotating rod extends. Then, the second screw is rotated to align the lower end of the rotating rod with the compression frame. Then, the rotating rod is rotated again until the contact block contacts the compression frame, compressing the flooring and ensuring a tight contact between the flooring and the ground. This design ensures a tight connection between the flooring and the ground.
[0011] Preferably, a sliding block is installed on the upper side of the ladder body, and a baffle is installed on the bottom surface of the sliding block. A storage box is installed on the ladder body, and a sliding groove is provided on one side of the storage box. The storage box is slidably connected to the ladder body through the cooperation of the sliding block and the sliding groove. The storage box is installed on the upper side of the ladder body, and can be detached from the ladder body by the cooperation of the sliding block and the sliding groove. A baffle is installed on the bottom surface of the sliding block to prevent the storage box from sliding out. During operation, tools or parts can be placed in the storage box to prevent them from falling out. This design facilitates tool storage.
[0012] Preferably, the ladder body is equipped with several evenly distributed anti-slip plates. The anti-slip plates have a U-shaped cross-section and are matched to the ladder body. The top surface of the anti-slip plates has several evenly distributed friction particles. Anti-slip plates are also installed on the foot pedals of the ladder body. These U-shaped anti-slip plates cover the foot pedals, ensuring insulation while the friction particles on the anti-slip plates improve slip resistance. This design enhances slip resistance.
[0013] The beneficial effects of this utility model are: improving the stability of the ladder, reducing the left and right swaying of the ladder body, preventing the ladder body from sliding backward, ensuring a tight connection between the floor and the ground, facilitating tool storage, and improving anti-slip properties. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 yes Figure 1 Schematic diagram of the main structure of the middle ladder;
[0016] Figure 3 yes Figure 1 Schematic diagram of the middle limit component;
[0017] Figure 4 yes Figure 1 Structural diagram of the ground-mounted component and the expansion-roof component;
[0018] Figure 5 yes Figure 1 A structural diagram of the storage box;
[0019] Figure 6 yes Figure 1 A schematic diagram of the structure of the anti-slip plate.
[0020] In the diagram: 1. Ladder body; 11. Mounting plate; 12. Rotating plate; 13. Storage slot; 14. Sliding block; 15. Baffle; 2. Limiting component; 21. Screw one; 22. Extrusion block; 23. Handwheel; 24. Spike one; 3. Ground contact component; 31. Ground contact plate; 32. Spike two; 33. Extrusion frame; 4. Expansion top component; 41. Screw two; 42. Rotating rod; 43. Threaded hole; 44. Contact block; 5. Storage box; 51. Sliding slot; 6. Anti-slip plate; 61. Friction particles. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0022] like Figure 1 In this embodiment, a hot-dip galvanized U-shaped ladder for power applications includes a ladder body 1, a limiting component 2 installed at the upper end of the ladder body 1, the limiting component 2 being threadedly connected to the ladder body 1, a ground-contact component 3 installed at the lower end of the ladder body 1, the ground-contact component 3 being rotatably connected to the ladder body 1, and an expansion component 4 provided on the ladder body 1, one end of the expansion component 4 being in contact with the ground-contact component 3.
[0023] like Figure 2 , Figure 3 As shown, the ladder body 1 is equipped with an installation plate 11. The limiting component 2 includes a screw 21 and an extrusion block 22. The screw 21 is threadedly connected to the installation plate 11. A handwheel 23 is installed at the other end of the screw 21. The extrusion block 22 is placed at the other end of the screw 21. One side of the extrusion block 22 is rotatably connected to the screw 21. Several spikes 24 are evenly distributed in a circle on the other side of the extrusion block 22.
[0024] like Figure 4 As shown, both sides of the ladder body 1 are equipped with ground-attaching components 3. The ground-attaching components 3 include a floor 31. The ladder body 1 is provided with two rotating plates 12. One end of the floor 31 is rotatably connected to the rotating plates 12 on both sides. The bottom surface of the other end of the floor 31 is equipped with a number of evenly distributed spikes 32.
[0025] The ladder body 1 is provided with a storage groove 13, and the expansion top assembly 4 is installed in the storage groove 13. The expansion top assembly 4 includes a screw rod 41 and a rotating rod 42. One end of the screw rod 41 is placed in the storage groove 13 and is rotatably connected to the ladder body 1. One end of the rotating rod 42 is provided with a threaded hole 43. The other end of the screw rod 41 is placed in the threaded hole 43 and is threadedly connected to the rotating rod 42. The other end of the rotating rod 42 is provided with a contact block 44. A compression frame 33 is installed on the top surface of the floor 31, and the contact block 44 contacts the compression frame 33.
[0026] like Figure 5 As shown, a sliding block 14 is installed on the upper side of the ladder body 1, a baffle 15 is installed on the bottom surface of the sliding block 14, a storage box 5 is installed on the ladder body 1, and a sliding groove 51 is provided on one side of the storage box 5. The storage box 5 is slidably connected to the ladder body 1 through the cooperation of the sliding block 14 and the sliding groove 51.
[0027] like Figure 6 As shown, several uniformly distributed anti-slip plates 6 are installed on the ladder body 1. The cross-sectional shape of the anti-slip plate 6 is U-shaped. The anti-slip plate 6 matches the ladder body 1. Several uniformly distributed friction particles 61 are installed on the top surface of the anti-slip plate 6.
[0028] When in use, place the U-shaped ladder body 1 against the wall, turn the handwheel 23 to drive the screw 21 to rotate. Since the screw 21 is threadedly connected to the mounting plate 11, the screw 21 extends towards the wall. The screw 21 drives the pressing block 22 to approach the wall until the spike 24 on the pressing block 22 is in contact with the wall, thereby ensuring the stability of the upper end of the ladder body 1.
[0029] Then, rotate the flooring 31 to bring the spikes 32 on the flooring 31 into contact with the ground. Then rotate the rotating rod 42. Since the rotating rod 42 is threadedly connected to the screw 41, the rotating rod 42 extends. Then rotate the screw 41 to align the lower end of the rotating rod 42 with the extrusion frame 33. Then continue to rotate the rotating rod 42 until the contact block 44 contacts the extrusion frame 33, extruding the flooring 31 to ensure close contact between the flooring 31 and the ground, and to ensure the stability of the lower end of the ladder body 1.
Claims
1. A hot-dip galvanized U-shaped ladder for electric power, characterized by, Including the ladder body (1), the upper end of the ladder body (1) is provided with a limiting assembly (2), the limiting assembly (2) is in threaded connection with the ladder body (1), the lower end of the ladder body (1) is provided with a ground contact assembly (3), the ground contact assembly (3) is in rotary connection with the ladder body (1), the ladder body (1) is provided with an expansion roof assembly (4), one end of the expansion roof assembly (4) is in contact with the ground contact assembly (3).
2. The hot-dip galvanized U-type ladder according to claim 1, wherein The ladder body (1) is provided with a mounting plate (11), the limiting assembly (2) comprises a screw rod (21) and an extrusion block (22), the screw rod (21) is in threaded connection with the mounting plate (11), the other end of the screw rod (21) is provided with a hand wheel (23), the extrusion block (22) is arranged at the other end of the screw rod (21), one side of the extrusion block (22) is in rotary connection with the screw rod (21), the other side of the extrusion block (22) is provided with a plurality of evenly distributed sharp spikes (24).
3. The hot-dip galvanized U-type ladder according to claim 1, wherein The ground contact assembly (3) is arranged on both sides of the ladder body (1), the ground contact assembly (3) comprises a ground contact plate (31), the ladder body (1) is provided with two rotary plates (12), one end of the ground contact plate (31) is in rotary connection with the rotary plates (12) on both sides respectively, the bottom surface of the other end of the ground contact plate (31) is provided with a plurality of evenly distributed sharp spikes (32).
4. The hot-dip galvanized U-type ladder according to claim 3, wherein The ladder body (1) is provided with a receiving groove (13), the expansion roof assembly (4) is arranged in the receiving groove (13), the expansion roof assembly (4) comprises a screw rod (41) and a rotary rod (42), one end of the screw rod (41) is arranged in the receiving groove (13) and is in rotary connection with the ladder body (1), one end of the rotary rod (42) is provided with a threaded hole (43), the other end of the screw rod (41) is arranged in the threaded hole (43) and is in threaded connection with the rotary rod (42), the other end of the rotary rod (42) is provided with a contact block (44), the top surface of the ground contact plate (31) is provided with an extrusion frame (33), the contact block (44) is in contact with the extrusion frame (33).
5. The hot-dipped galvanized U-climbing ladder for electric power according to claim 1, wherein The upper end side of the ladder body (1) is provided with a sliding block (14), the bottom surface of the sliding block (14) is provided with a baffle (15), the ladder body (1) is provided with a receiving box (5), one side of the receiving box (5) is provided with a sliding groove (51), the receiving box (5) is in sliding connection with the ladder body (1) through the cooperation of the sliding block (14) and the sliding groove (51).
6. The hot-dipped galvanized U-climbing ladder for electric power according to claim 1, wherein The ladder body (1) is provided with a plurality of evenly distributed anti-skid plates (6), the cross-sectional shape of the anti-skid plate (6) is U-shaped, the anti-skid plate (6) is matched with the ladder body (1), the top surface of the anti-skid plate (6) is provided with a plurality of evenly distributed friction particles (61).
Citation Information
Patent Citations
Crawling ladder
CN221119803U