Detachable ladder stand device for safety protection of steel structure bridge
By introducing protective and support mechanisms into the climbing ladder device, the safety and stability issues during climbing are resolved, achieving safety protection under bridge vibration or severe weather conditions, and improving the safety and stability of workers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTRUCTION SIXTH ENGINEERING DIVISION CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-04-28
AI Technical Summary
When using existing detachable climbing ladders for safety protection of steel structure bridges, workers are prone to falling if their center of gravity shifts, their feet slip, or they are affected by external forces. This weakens the ladder's anti-sway ability, and it may sway, tilt, or even fall off under bridge vibration or severe weather conditions, reducing the stability and safety of the operation.
A ladder device comprising a protective mechanism and a support mechanism was designed. The protective mechanism provides safety protection through a combination of a protective cover and a threaded rod, while the support mechanism improves stability through a combination of a fixed rod and rollers. The device's anti-sway capability is enhanced by the cooperation of a damper and a locking plate.
It improves safety and stability during the climbing process, preventing the device from shaking or falling off due to bridge vibration or severe weather, and ensuring the safety and stability of the workers.
Smart Images

Figure CN224174009U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel structure technology, specifically to a detachable climbing ladder device for safety protection of steel structure bridges. Background Technology
[0002] The detachable climbing ladder device for safety protection of steel structure bridges is a safety protection facility specifically designed for steel structure bridges. It adopts a detachable structure and is usually made of steel or other high-strength materials. It includes components such as ladder frame, handrail, footboard, and connectors. It can be installed or disassembled at specific locations on the bridge according to the actual needs of bridge construction, inspection, and maintenance, providing a safe and convenient access for workers.
[0003] Existing detachable climbing ladder devices for safety protection of steel structure bridges are prone to causing workers to lose balance and fall when climbing due to a shift in the center of gravity, slipping, or external forces. This weakens the ladder's anti-sway capability, and it may sway, tilt, or even fall off under bridge vibration or severe weather conditions, reducing operational stability and safety. To address this issue, we propose a detachable climbing ladder device for safety protection of steel structure bridges. Utility Model Content
[0004] The purpose of this utility model is to provide a detachable climbing ladder device for safety protection of steel structure bridges, so as to solve the problem mentioned in the background art that when workers climb the existing detachable climbing ladder devices for safety protection of steel structure bridges, if the center of gravity shifts, the feet slip, or the influence of external forces, the ladder is prone to imbalance and falls, which weakens the anti-swaying ability of the ladder. Under bridge vibration or bad weather, it may sway, tilt or even fall off, reducing the stability and safety of the operation.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a detachable climbing ladder device for safety protection of steel structure bridges, comprising: a main pole, with a foot pedal fixedly connected inside the main pole.
[0006] It also includes: a protective mechanism, which is installed on the main pole and is used to protect the device;
[0007] The support mechanism is mounted on the main rod and is used to support the device.
[0008] The protective mechanism includes a protective cover that is movably connected to one side of the main rod. A mounting rod is fixedly connected to one side of the protective cover, and a fixing block is fixedly connected to one side of the mounting rod. A threaded rod is threadedly connected to the inside of the fixing block.
[0009] One side of the threaded rod is fixedly connected to a turntable, and the outer periphery of the turntable is provided with anti-slip texture.
[0010] The support mechanism includes a fixed rod fixedly connected to one side of the main rod, a sliding plate fixedly connected to the bottom of the fixed rod, a roller fixedly connected to one side of the sliding plate, a rotating shaft rotatably connected to one side of the main rod, a base fixedly connected to one side of the rotating shaft, the roller slidably connected inside the base, a damper fixedly connected to the top of the base, and a locking plate fixedly connected to the top of the damper.
[0011] The damper is fixedly connected to a spring on its periphery, and the bottom of the spring is fixedly connected to the inside of the base.
[0012] One side of the main rod is fixedly connected to a connecting rod, and the connecting rod has a connecting groove inside.
[0013] The main rod is fixedly connected to a support plate at its bottom, and the support plate is fixedly connected to a support rod at its bottom.
[0014] This utility model has at least the following beneficial effects:
[0015] In use, this invention features a protective mechanism that protects workers climbing the device. Additionally, workers can rotate a turntable to extend the threaded rod through the fixing block into the main rod, installing the protective cover around the main rod for further protection. This enhances the safety of the device. Furthermore, a support mechanism allows workers to rotate the shaft to bring the fixing rod into contact with the ground. A locking plate then engages with the fixing rod, providing support to the device and improving its stability during use. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the foot pedal of this utility model;
[0018] Figure 3 This is a schematic diagram of the protective mechanism of this utility model;
[0019] Figure 4 This is a schematic diagram of the support mechanism of this utility model.
[0020] In the diagram: 1. Main rod; 101. Connecting rod; 102. Connecting groove; 103. Foot pedal; 104. Support plate; 105. Support rod; 2. Protective mechanism; 201. Protective cover; 202. Fixing block; 203. Threaded rod; 204. Turntable; 205. Mounting rod; 3. Support mechanism; 301. Fixing rod; 302. Clamping plate; 303. Damper; 304. Spring; 305. Slide plate; 306. Roller; 307. Base; 308. Rotating shaft. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Example 1
[0023] Please see Figures 1 to 4 This utility model provides a technical solution: a detachable climbing ladder device for safety protection of steel structure bridges, comprising: a main pole 1, with a footboard 103 fixedly connected inside the main pole 1.
[0024] It also includes: a protective mechanism 2, which is installed on the main rod 1 and is used to protect the device;
[0025] Support mechanism 3 is mounted on main rod 1 and is used to support the device.
[0026] A protective mechanism 2 is fixedly connected to one side of the main pole 1. During use, the protective cover 201 can protect the climber. In addition, the worker can rotate the turntable 204 to drive the threaded rod 203 to thread through the fixing block 202 and extend it into the main pole 1. The protective cover 201 is then installed on the outside of the main pole 1 to protect the worker, thus improving the safety of the device. Through the support mechanism 3, when the device is in use, the worker rotates the rotating shaft 308 to bring the fixed rod 301 into contact with the ground. At this time, the locking plate 302 can be locked to one side of the fixed rod 301, so that the fixed rod 301 and the base 307 support the device, improving the stability of the device during use.
[0027] The protective mechanism 2 includes a protective cover 201 movably connected to one side of the main pole 1. A mounting rod 205 is fixedly connected to one side of the protective cover 201, and a fixing block 202 is fixedly connected to one side of the mounting rod 205. A threaded rod 203 is threadedly connected inside the fixing block 202, and a turntable 204 is fixedly connected to one side of the threaded rod 203. The outer periphery of the turntable 204 is provided with anti-slip texture. During use, the protective cover 201 can protect the climber. In addition, the worker can rotate the turntable 204 to drive the threaded rod 203 to thread through the fixing block 202 and extend into the main pole 1, thus installing the protective cover 201 on the outer periphery of the main pole 1 to protect the worker and improve the safety effect of the device.
[0028] The support mechanism 3 includes a fixed rod 301 fixedly connected to one side of the main rod 1. A sliding plate 305 is fixedly connected to the bottom of the fixed rod 301. A roller 306 is fixedly connected to one side of the sliding plate 305. A rotating shaft 308 is rotatably connected to one side of the main rod 1. A base 307 is fixedly connected to one side of the rotating shaft 308. The roller 306 is slidably connected inside the base 307. A damper 303 is fixedly connected to the top of the base 307. A locking plate 302 is fixedly connected to the top of the damper 303. A spring 304 is fixedly connected to the periphery of the damper 303. The bottom of the spring 304 is fixedly connected inside the base 307. When the device is in use, the operator rotates the rotating shaft 308 to bring the fixed rod 301 into contact with the ground. At this time, the locking plate 302 can be used to lock the fixed rod 301 to one side, so that the fixed rod 301 and the base 307 support the device, improving the stability of the device during use.
[0029] Example 2
[0030] In this second embodiment, all other structures remain unchanged, but the difference from the first embodiment is:
[0031] A connecting rod 101 is fixedly connected to one side of the main rod 1. A connecting groove 102 is provided inside the connecting rod 101. When the device is in use, the device can be connected through the connecting rod 101 and the connecting groove 102, which improves the stability of the device. A support plate 104 is fixedly connected to the bottom of the main rod 1. A support rod 105 is fixedly connected to the bottom of the support plate 104. When the device is in use, the support plate 104 and the support rod 105 support the device, which improves the stability of the device.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A detachable climbing ladder device for safety protection of steel structure bridges, including: The main rod, with a foot pedal fixedly connected inside, Its features include: a protective mechanism, which is mounted on the main rod and is used to protect the device; A support mechanism is mounted on the main rod and is used to support the device.
2. The detachable climbing ladder device for safety protection of steel structure bridges according to claim 1, characterized in that: The protective mechanism includes a protective cover movably connected to one side of the main rod, a mounting rod fixedly connected to one side of the protective cover, a fixing block fixedly connected to one side of the mounting rod, and a threaded rod internally threaded into the fixing block.
3. The detachable climbing ladder device for safety protection of steel structure bridges according to claim 2, characterized in that: A turntable is fixedly connected to one side of the threaded rod, and the outer periphery of the turntable is provided with anti-slip texture.
4. The detachable climbing ladder device for safety protection of steel structure bridges according to claim 1, characterized in that: The support mechanism includes a fixed rod fixedly connected to one side of the main rod, a sliding plate fixedly connected to the bottom of the fixed rod, a roller fixedly connected to one side of the sliding plate, a rotating shaft rotatably connected to one side of the main rod, a base fixedly connected to one side of the rotating shaft, the roller slidably connected inside the base, a damper fixedly connected to the top of the base, and a locking plate fixedly connected to the top of the damper.
5. The detachable climbing ladder device for safety protection of steel structure bridges according to claim 4, characterized in that: A spring is fixedly connected to the periphery of the damper, and the bottom of the spring is fixedly connected to the inside of the base.
6. The detachable climbing ladder device for safety protection of steel structure bridges according to claim 1, characterized in that: A connecting rod is fixedly connected to one side of the main rod, and a connecting groove is provided inside the connecting rod.
7. The detachable climbing ladder device for safety protection of steel structure bridges according to claim 1, characterized in that: A support plate is fixedly connected to the bottom of the main rod, and a support rod is fixedly connected to the bottom of the support plate.