Multifunctional safety hanging ladder for power maintenance

Abstract

The utility model discloses a kind of multifunctional safety hanging ladder for electric power maintenance belongs to hanging ladder technical field, including rectangular bottom plate, rubber pad is fixed in the bottom side of rectangular bottom plate, two groups of positioning plate are fixed symmetrically in the top side of rectangular bottom plate, fixed shaft is fixed between the inner wall of each positioning plate, rotating cylinder is rotatably connected on the stem of fixed shaft, the top side of rotating cylinder is fixed with buckle block, main hanging ladder side rod is inserted and connected on buckle block, buckle block and main hanging ladder side rod are connected by first bolt thread, multiple main treadle are uniformly spaced and fixed between two main hanging ladder side rods, multiple handles are uniformly spaced and fixed in the side of main hanging ladder side rod away from main treadle, the utility model can effectively adapt to different angles and different height's maintenance environment, avoid hanging ladder suspended while improving safety, and have telescopic, can be refitted Ability, can also avoid frequent climbing to cause soil dust to interfere with maintenance process.

Description

Technical Field

[0001] This utility model relates to the field of ladder technology, specifically to a multifunctional safety ladder for power maintenance. Background Technology

[0002] The multi-functional safety ladder for power maintenance is a climbing tool that can be fixed and adapted to multiple scenarios. It can form a safe working platform by being stably attached to power poles, towers or equipment frames, meeting the climbing needs of various power maintenance scenarios such as line inspection, equipment maintenance, and fault repair, and ensuring work efficiency and personnel safety.

[0003] However, many existing hanging ladders often have their bottoms suspended in the air during actual use. Suspended hanging ladders lack stability and pose a high safety risk. In addition, many hanging ladders do not have telescopic capabilities, resulting in poor applicability. Furthermore, when climbing up and down the hanging ladder, the same footboard is used for both hands and feet, causing mud from shoes to transfer to the hands, thus affecting maintenance work.

[0004] This utility model can effectively adapt to maintenance environments with different angles and heights, avoid the ladder from being suspended in the air while improving safety, and has the ability to be extended and modified. It can also avoid the interference of mud and dust on the maintenance process caused by frequent climbing. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-functional safety ladder for power maintenance in order to solve the above problems. It can effectively adapt to maintenance environments with different angles and heights, avoid the ladder from being suspended in the air while improving safety, and has the ability to be extended and modified. It can also avoid the interference of mud and dust on the maintenance process caused by frequent climbing.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a multi-functional safety ladder for power maintenance includes a rectangular base plate. A rubber pad is fixedly connected to the bottom side of the rectangular base plate. Two sets of positioning plates are symmetrically fixedly connected to the top side of the rectangular base plate. Each set of positioning plates has two plates. A fixed shaft is fixedly connected between the inner walls of each set of positioning plates. A rotating cylinder is rotatably connected to the shaft. A buckle block is fixedly connected to the top side of the rotating cylinder. A main ladder side rod is inserted into the buckle block. The buckle block and the main ladder side rod are threadedly connected by a first bolt. Multiple main steps are fixedly connected at even intervals between the two main ladder side rods. Multiple handles are fixedly connected at even intervals on the side of the main ladder side rod away from the main steps. A rotating shaft passing through the bottom main step is also rotatably installed between the two main ladder side rods through a bearing. The rotating shaft is driven by a motor fixedly installed on the outer wall of the main ladder side rod. Two active bevel gears are symmetrically fixedly installed at both ends of the rotating shaft and are disposed inside the main ladder side rod.

[0007] Preferably, a bearing seat is fixedly installed on the inner wall of the side rod of the main ladder, and a lead screw is rotatably installed in each bearing seat.

[0008] Preferably, the bottom end of the lead screw is fixedly connected to a driven bevel gear that meshes with the driving bevel gear, and the top end of the lead screw is rotatably mounted with a limit plate via a bearing, and the limit plate is rectangular.

[0009] Preferably, a threaded sleeve is threaded onto the body of the lead screw, and the threaded sleeve is rectangular. A secondary ladder side rod is fixedly connected to the outer wall of the threaded sleeve and is vertically slidably connected to the inner wall of the main ladder side rod. Both the secondary ladder side rod and the main ladder side rod are rectangular.

[0010] Preferably, the inner wall of the auxiliary ladder side rod is vertically slidably connected to the limiting plate, and a hook is fixedly connected to the top end of the auxiliary ladder side rod.

[0011] Preferably, multiple sets of auxiliary steps are symmetrically and evenly spaced on both sides of the auxiliary ladder side rod, and the auxiliary ladder side rod and each set of auxiliary steps are connected by a second bolt threaded connection.

[0012] Preferably, each set of auxiliary pedals is provided with two, one of which has multiple inserts fixedly connected at even intervals on its inner wall, and the other has multiple inserts fixedly connected at even intervals on its inner wall, wherein the inserts and inserts are plugged into each other.

[0013] Compared with the prior art, this utility model provides a multi-functional safety ladder for power maintenance, which has the following advantages:

[0014] (1) By setting a rectangular base plate, the rubber pad on the bottom side of the rectangular base plate can increase the friction with the ground. The fixed shaft between the positioning plate on the top side of the rectangular base plate and the rotating cylinder form a rotation adjustment structure. The rotating cylinder can drive the buckle block and the side rod of the main hanging ladder to flexibly adjust the tilt angle, so that the device can be adapted to the installation angle of different structures such as electric poles and iron towers, ensuring that the rectangular base plate is always in contact with the ground. After adjustment, the buckle block and the side rod of the main hanging ladder are locked by the first bolt. The structure has the ability to extend and retract, so that the bottom of the hanging ladder is always in contact with the ground, completely eliminating the safety hazards caused by suspension.

[0015] (2) This utility model is equipped with a motor, which drives the rotating shaft to rotate. The active bevel gears at both ends of the rotating shaft mesh synchronously with the driven bevel gear, which drives the screw in the bearing seat to rotate. Since the threaded sleeve is rectangular and fixedly connected to the inner wall of the auxiliary hanging ladder side rod, when the screw rotates, it will drive the threaded sleeve to drive the auxiliary hanging ladder side rod to slide vertically along the inner wall of the main hanging ladder side rod, thereby realizing the electric adjustment of the ladder height, adapting to different maintenance height requirements. The limit plate can also prevent the auxiliary hanging ladder side rod from over-extending and falling off, thus improving the stability of the extension and retraction process.

[0016] (3) This utility model provides a handle, a main step and a secondary step for the feet to step on. Since the length and width of the secondary ladder side bar are lower than the length and width of the main ladder side bar, the secondary ladder side bar is suitable for hand climbing, while the main ladder side bar is not suitable for hand climbing. When climbing, the hands can use the handle or the secondary ladder side bar to exert force, avoiding the transfer of mud caused by the hands and feet sharing the main step and secondary step. At the same time, the detachable structure of the secondary step is convenient for cleaning, storage and expansion. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a frontal cross-sectional view of the present invention.

[0020] Figure 3 This is a side cross-sectional view of the present invention, which includes the main hanging ladder side rod.

[0021] Figure 4 This is a side sectional view of the present invention.

[0022] Figure 5 This is a front cross-sectional view of the present invention, which includes a rotating shaft.

[0023] Figure 6This is a front cross-sectional view of the present invention, which includes an auxiliary pedal.

[0024] Figure 7 This is a side cross-sectional view of the present invention, which includes an auxiliary pedal.

[0025] In the diagram: 1. Rectangular base plate, 2. Rubber pad, 3. Positioning plate, 4. Fixed shaft, 5. Rotating cylinder, 6. Buckle block, 7. Main ladder side rod, 8. First bolt, 9. Rotating shaft, 10. Motor, 11. Driving bevel gear, 12. Bearing seat, 13. Lead screw, 14. Driven bevel gear, 15. Limiting plate, 16. Threaded sleeve, 17. Secondary ladder side rod, 18. Handle, 19. Hook, 20. Main pedal, 21. Secondary pedal, 22. Second bolt, 23. Insert cylinder, 24. Insert rod. Detailed Implementation

[0026] 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.

[0027] Example 1

[0028] like Figures 1-5As shown, this utility model provides a multi-functional safety ladder for power maintenance, including a rectangular base plate 1. A rubber pad 2 is fixedly connected to the bottom side of the rectangular base plate 1. Two sets of positioning plates 3 are symmetrically fixedly connected to the top side of the rectangular base plate 1. Each set of positioning plates 3 has two plates. A fixed shaft 4 is fixedly connected between the inner walls of each set of positioning plates 3. A rotating cylinder 5 is rotatably connected to the shaft of the fixed shaft 4. A latching block 6 is fixedly connected to the top side of the rotating cylinder 5. A main ladder side rod 7 is inserted into the latching block 6. The latching block 6 and the main ladder side rod... The rods 7 are connected by a first bolt 8. Multiple main steps 20 are fixedly connected at even intervals between the two main ladder side rods 7. Multiple handles 18 are fixedly connected at even intervals on the side of the main ladder side rod 7 away from the main steps 20. A rotating shaft 9 that passes through the bottom main step 20 is also rotatably installed between the two main ladder side rods 7 through a bearing. The rotating shaft 9 is driven by a motor 10 fixedly installed on the outer wall of the main ladder side rod 7. Two active bevel gears 11 are symmetrically fixedly installed at both ends of the rotating shaft 9 inside the main ladder side rod 7. The rectangular base plate 1 provides bottom support for the entire hanging ladder and serves as the installation foundation for all bottom components. The rubber pad 2 increases the friction between the rectangular base plate 1 and the contact surface, improving the stability of the hanging ladder during placement and preventing slippage. The positioning plate 3 is used to fix the fixed shaft 4, providing a stable mounting carrier for it. The fixed shaft 4 acts as a rotational support component for the rotating cylinder 5, allowing the rotating cylinder 5 to rotate flexibly around it. The rotating cylinder 5 can drive the main hanging ladder side rod 7 to rotate via the latching block 6, thereby adjusting the tilt angle to adapt to different frame angles in maintenance scenarios. The latching block 6 provides a connection interface between the rotating cylinder 5 and the main hanging ladder side rod 7. The two are now detachably connected. The first bolt 8 can fix the buckle block 6 to the main ladder side rod 7 after the angle of the main ladder side rod 7 is adjusted, preventing loosening during use. The main step 20 is provided for the operator's feet to step on, providing a support point for climbing. The handle 18 is provided for the operator's hands to hold, helping to maintain balance when climbing and avoid falling. The motor 10 can drive the rotating shaft 9 to rotate, and the rotating shaft 9 can drive the active bevel gear 11 to rotate. The active bevel gear 11 can mesh with the driven bevel gear 14, converting the rotational power of the rotating shaft 9 into the power to drive the lead screw 13 to rotate, providing power transmission for the height adjustment of the ladder.

[0029] Example 2

[0030] Please see Figure 2 , Figure 3 and Figure 5 The inner wall of the main ladder side rod 7 is fixedly installed with a bearing seat 12, and a lead screw 13 is rotatably installed in each bearing seat 12. The rotatable engagement between the bearing seat 12 and the lead screw 13 can reduce the frictional resistance when the lead screw 13 rotates, ensure the smoothness and stability of the lead screw 13 rotation process, and provide structural support for the lead screw 13 to realize the functions of power transmission and height adjustment.

[0031] Example 3

[0032] Please see Figure 2 , Figure 3 and Figure 5 The bottom end of the lead screw 13 is fixedly connected to a driven bevel gear 14 that meshes with the driving bevel gear 11. The top end of the lead screw 13 is rotatably mounted with a limit plate 15 via a bearing, and the limit plate 15 is rectangular. The driven bevel gear 14 is fixedly engaged with the lead screw 13 and meshes with the driving bevel gear 11, which can transmit the rotational power of the driving bevel gear 11 to the lead screw 13, driving the lead screw 13 to rotate synchronously, realizing the transmission of power from the rotating shaft 9 to the lead screw 13. The limit plate 15 and the lead screw 13 are rotatably engaged via a bearing, which can limit the maximum extension range of the auxiliary ladder side rod 17, prevent the auxiliary ladder side rod 17 from over-extending and falling off, and ensure safety during the extension and retraction process.

[0033] Example 4

[0034] Please see Figure 2 and Figure 3 A threaded sleeve 16 is threaded onto the body of the lead screw 13. The threaded sleeve 16 is rectangular. A secondary ladder side rod 17, which is vertically slidably connected to the inner wall of the main ladder side rod 7, is fixedly connected to the outer wall of the threaded sleeve 16. Both the secondary ladder side rod 17 and the main ladder side rod 7 are rectangular. The threaded sleeve 16 is threaded into the lead screw 13, converting the rotational motion of the lead screw 13 into its own vertical linear motion. The fixed engagement between the threaded sleeve 16 and the secondary ladder side rod 17 allows the secondary ladder side rod 17 to move vertically synchronously, enabling overall height adjustment of the ladder to accommodate different maintenance height requirements.

[0035] Example 5

[0036] Please see Figure 1 , Figure 3 and Figure 4 The inner wall of the auxiliary ladder side rod 17 is vertically slidably connected to the limiting plate 15, and a hook 19 is fixedly connected to the top of the auxiliary ladder side rod 17. The hook 19 is fixedly engaged with the auxiliary ladder side rod 17 and can be hooked onto maintenance carriers such as utility poles, iron towers, or equipment frames to provide a stable suspension point for the ladder, ensuring that the ladder is fixed in position during operation and preventing displacement or shaking.

[0037] Example 6

[0038] Please see Figures 1-3The auxiliary ladder side rod 17 has multiple sets of auxiliary steps 21 evenly spaced and symmetrically arranged on both sides of the rod body. The auxiliary ladder side rod 17 and each set of auxiliary steps 21 are threadedly connected by a second bolt 22. The auxiliary steps 21 and the auxiliary ladder side rod 17 are detachably connected by the second bolt 22, which facilitates the cleaning, storage, replacement and expansion of the auxiliary steps 21. The auxiliary steps 21 are for workers to step on, and together with the main step 20, they allow for separate force application of hands and feet when climbing, preventing mud from the soles of shoes from being transferred to the hands, ensuring cleanliness during maintenance. The second bolt 22 can lock the auxiliary steps 21 and the auxiliary ladder side rod 17 to prevent the auxiliary steps 21 from loosening when stepped on.

[0039] Example 7

[0040] Please see Figure 6 and Figure 7 Each set of auxiliary pedals 21 has two components. One auxiliary pedal 21 has multiple evenly spaced and fixedly connected inserts 23 to its inner wall, while the other auxiliary pedal 21 has multiple evenly spaced and fixedly connected inserts 24 to its inner wall. The inserts 23 and inserts 24 are interlocked. The fixed engagement of the inserts 23 with one auxiliary pedal 21 and the fixed engagement of the inserts 24 with the other auxiliary pedal 21 enhances the overall integrity and structural stability of the connected auxiliary pedals 21, preventing displacement or loosening during pedaling and improving safety.

[0041] The working principle of the multi-functional safety ladder for power maintenance provided by this utility model is as follows:

[0042] First, based on the angle of the poles, towers and other structures in the maintenance scenario, the rectangular base plate 1 is placed on the ground, with its bottom rubber pad 2 directly contacting the ground to enhance friction. Then, the first bolt 8 is used to lock the buckle block 6 and the main hanging ladder side rod 7. By rotating the rotating cylinder 5, it is made to rotate around the fixed axis 4 between the positioning plates 3. The rotating cylinder 5 drives the buckle block 6 and the main hanging ladder side rod 7 to adjust their tilt angles synchronously, thereby completing the fixation of the bottom position of the device.

[0043] Next, the motor 10 is started according to the maintenance height requirement. The motor 10 drives the rotating shaft 9 to rotate. The active bevel gears 11 at both ends of the rotating shaft 9 synchronously mesh with the driven bevel gears 14, which drive the lead screw 13 in the bearing seat 12 to rotate. The rotation direction of the two lead screws 13 is opposite to the thread direction. Therefore, when the lead screw 13 rotates, it will drive the threaded sleeve 16 to drive the auxiliary hanging ladder side rod 17 to slide vertically in the same direction along the inner wall of the main hanging ladder side rod 7, so as to realize the height adjustment of the ladder. During the process, the limit plate 15 restricts the auxiliary hanging ladder side rod 17 from over-extending to prevent it from falling off, until the auxiliary hanging ladder side rod 17 reaches the required height.

[0044] Subsequently, the auxiliary step 21 is installed on the auxiliary ladder side bar 17 using the second bolt 22. During installation, the insertion cylinder 23 of one set of auxiliary step 21 is inserted and matched with the insertion bar 24 of another set to form a complete tread surface. When workers climb, they use the handles 18 on the main ladder side bar 7 or hold the auxiliary ladder side bar 17 to maintain balance, and alternately step on the main step 20 between the main ladder side bars 7 or the auxiliary step 21 on the auxiliary ladder side bar 17 to achieve separate force application of hands and feet, avoiding mud transfer to the hands.

[0045] After the maintenance is completed, first remove the second bolt 22 to take off the auxiliary step 21 for storage and cleaning. Then start the motor 10 in reverse. Through the bevel gear transmission and the screw structure, drive the auxiliary hanging ladder side rod 17 to retract into the main hanging ladder side rod 7. Finally, loosen the first bolt 8 and take off the main hanging ladder side rod 7 for subsequent storage, thus completing the device recycling.

[0046] The bevel gears, lead screws, and other metal structures involved in this utility model must all be made of high-quality rust-proof materials or treated with mature waterproofing processes. This is intended to effectively prevent device malfunctions caused by rust or water ingress in the structural components. Since the aforementioned rust-proof materials and waterproofing processes are all within the scope of existing technology, they will not be described in detail in this utility model.

[0047] It is necessary to explain that the lead screw thread in the embodiment adopts a trapezoidal thread structure. According to the mechanical design principle, when the thread helix angle is less than the friction angle, the thread pair has a natural self-locking function, which can prevent it from rotating on its own without the action of external force, and achieve the self-locking of the lead screw without starting the motor.

[0048] The motor involved in the embodiments, its matching control system, electromagnetic switch and pipeline circuit can also be provided by the manufacturer. Apart from that, the power supply module, circuit and electronic components and control module involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-functional safety ladder for power maintenance, comprising a rectangular base plate (1), characterized in that: A rubber pad (2) is fixedly connected to the bottom side of the rectangular base plate (1). Two sets of positioning plates (3) are symmetrically fixedly connected to the top side of the rectangular base plate (1). Each set of positioning plates (3) has two plates. A fixed shaft (4) is fixedly connected between the inner walls of each set of positioning plates (3). A rotating cylinder (5) is rotatably connected to the rod of the fixed shaft (4). A buckle block (6) is fixedly connected to the top side of the rotating cylinder (5). A main hanging ladder side rod (7) is inserted into the buckle block (6). The buckle block (6) and the main hanging ladder side rod (7) are threadedly connected by a first bolt (8). Multiple main steps (20) are fixedly connected at even intervals between the two main ladder side bars (7). Multiple handles (18) are fixedly connected at even intervals on the side of the main ladder side bar (7) away from the main steps (20). A rotating shaft (9) that passes through the bottom main step (20) is also rotatably installed between the two main ladder side bars (7) through a bearing. The rotating shaft (9) is driven by a motor (10) fixedly installed on the outer wall of the main ladder side bar (7). Two active bevel gears (11) are symmetrically fixedly installed at both ends of the rotating shaft (9) inside the main ladder side bar (7).

2. The multi-functional safety ladder for power maintenance according to claim 1, characterized in that: The inner wall of the main hanging ladder side rod (7) is fixedly installed with a bearing seat (12), and a lead screw (13) is rotatably installed in each bearing seat (12).

3. The multi-functional safety ladder for power maintenance according to claim 2, characterized in that: The bottom end of the lead screw (13) is fixedly connected to a driven bevel gear (14) that meshes with the driving bevel gear (11). The top end of the lead screw (13) is rotatably mounted with a limiting plate (15) through a bearing, and the limiting plate (15) is rectangular.

4. A multi-functional safety ladder for power maintenance according to claim 2, characterized in that: The screw (13) has a threaded sleeve (16) threaded on its body, and the threaded sleeve (16) is rectangular. The outer wall of the threaded sleeve (16) is fixedly connected to a secondary ladder side rod (17) that is vertically slidably connected to the inner wall of the main ladder side rod (7), and both the secondary ladder side rod (17) and the main ladder side rod (7) are rectangular.

5. A multi-functional safety ladder for power maintenance according to claim 4, characterized in that: The inner wall of the auxiliary ladder side rod (17) is vertically slidably connected to the limiting plate (15), and a hook (19) is fixedly connected to the top of the auxiliary ladder side rod (17).

6. A multi-functional safety ladder for power maintenance according to claim 4, characterized in that: The auxiliary ladder side rod (17) has multiple sets of auxiliary steps (21) evenly spaced and symmetrically arranged on both sides of the rod body. The auxiliary ladder side rod (17) and each set of auxiliary steps (21) are connected by a second bolt (22) threaded connection.

7. A multi-functional safety ladder for power maintenance according to claim 6, characterized in that: Each set of auxiliary pedals (21) is provided with two, one of which has multiple inserts (23) fixedly connected at even intervals on the inner wall of the auxiliary pedal (21), and the other has multiple inserts (24) fixedly connected at even intervals on the inner wall of the auxiliary pedal (21). The inserts (23) and inserts (24) are plugged into each other.

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