High stability ladder for strong and weak electric engineering

Abstract

The utility model discloses a high stability cat ladder for strong electricity and weak electricity engineering relates to the electric power engineering construction equipment technical field. The utility model discloses a main ladder frame is provided with the auxiliary ladder subassembly one side of main ladder frame, and the top fixed connection of main ladder frame has the top rest frame. The utility model discloses a design scheme that is hinged by main ladder frame, lower part frame passes through the pivot piece, and combines the collapsible auxiliary ladder subassembly, successfully solved the outstanding problem of "carrying inconvenience", "unable to fold or disassemble" and "volume is huge and weight is heavy" leads to "when transportation needs the help of truck loading" of existing cat ladder, and the structure makes cat ladder in non -use state to be able to draw together for a compact whole, greatly reduces the storage space and transportation volume, and the construction personnel can conveniently carry it to the remote work point such as mountain area, suburb etc, and the flexibility and response speed in strong electricity line field repair, weak electricity coverage etc. Mobile operation have been improved significantly.

Description

Technical Field

[0001] This utility model belongs to the technical field of power engineering construction equipment, and in particular relates to a highly stable climbing ladder for high-voltage and low-voltage engineering. Background Technology

[0002] High-voltage and low-voltage electrical engineering is a core construction field for power systems and information transmission systems, covering multiple sub-scenarios such as high-voltage transmission line laying, substation equipment installation, communication optical cable laying, and building low-voltage wiring. Ladders, as core equipment for working at heights, directly affect construction efficiency and operational safety.

[0003] A Chinese patent application with publication number CN212614451U discloses a highly stable ladder for high-voltage and low-voltage engineering, which includes two parallel and opposite ladder bars, with a step connected rotatably between the two ladder bars. The step is arranged at equal intervals along the length of the ladder bars. The ladder of this utility model has an angle-adjustable step, and the step can be adjusted to be horizontal by adjusting the length of the support leg.

[0004] Although the pedal angle of this patent is adjustable, it still has the disadvantage of being inconvenient to carry. It cannot be folded or disassembled, is bulky and heavy, and needs to be loaded with a truck for transportation. It cannot be easily carried by construction workers to outdoor work sites in mountainous areas, suburbs and other places where there are no roads. This seriously limits the flexibility of mobile operations such as emergency repair of high-voltage power lines in the field and low-voltage power coverage in remote areas. In addition, the outdoor high-voltage and low-voltage work environment is complex and often faces problems such as uneven ground and narrow working space. Existing ladders lack adaptive adjustment capabilities.

[0005] To address these issues, we provide a highly stable ladder for both high-voltage and low-voltage electrical engineering projects. Utility Model Content

[0006] The purpose of this utility model is to provide a highly stable climbing ladder for high-voltage and low-voltage engineering. By cooperating with the main ladder frame and auxiliary ladder components, it solves the problem that the existing climbing ladders used for high-voltage and low-voltage engineering are inconvenient to carry, which seriously limits the flexibility of mobile operations such as emergency repair of high-voltage lines in the field and low-voltage coverage in remote areas.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to a highly stable climbing ladder for high-voltage and low-voltage electrical engineering, comprising a main ladder frame, an auxiliary ladder assembly on one side of the main ladder frame, a top support frame fixedly connected to the top of the main ladder frame, a pivot member at the bottom of the main ladder frame, a lower frame at the bottom of the pivot member, and an auxiliary ladder assembly including a step. Both sides of the step are movably connected to the surface of the main ladder frame, and an auxiliary ladder frame is movably connected to one side of the step. A movable connector is provided at the bottom of the auxiliary ladder frame, and an extension frame is provided at the bottom of the movable connector. Locking plates are movably connected to the front and back of the main ladder frame and the lower frame, and locking frames are fixedly connected to the front and back of the auxiliary ladder frame and the extension frame. A locking bolt is passed through the top of the locking frame.

[0009] The present invention is further configured such that a support assembly is provided at the bottom of the main ladder frame. The support assembly includes a base plate, the top of which is fixedly connected to the bottom of the main ladder frame. A threaded cylinder is fixedly connected to the bottom of the base plate, and an adjusting screw is threadedly connected to the inner cavity of the threaded cylinder. This support assembly is the "leveling foot" of the ladder. When the ladder is placed on uneven ground, the construction personnel can rotate each adjusting screw. Since the adjusting screw and the threaded cylinder fixed at the bottom of the main ladder frame are engaged by threads, the rotation action will be converted into a linear movement of the adjusting screw in the vertical direction, thereby realizing fine adjustment of the support height. Even if the ground heights of the four support points are different, the top of the ladder can be kept level by independent adjustment.

[0010] The present invention is further configured such that a support pad is movably connected to the bottom of the adjusting screw, and anti-slip particles are provided on the bottom of the support pad. The support pad is movably connected to the bottom of the adjusting screw so that it can adapt to small angle changes when in contact with the ground, ensuring that the bottom surface is completely in contact with the ground. The anti-slip particles maximize static friction by increasing the surface roughness between the support pad and the ground. This design is an efficiency enhancer of the support component, and its function is to optimize grounding performance and provide ultimate anti-slip protection.

[0011] The present invention is further configured such that a limiting groove is formed on the inner wall of the threaded cylinder, and a limiting plate is fixedly connected to the top of the adjusting screw. The surface of the limiting plate is movably connected to the inner cavity of the limiting groove. This is a safety interlocking mechanism. When the adjusting screw is screwed into the threaded cylinder, the limiting plate fixed to the top of the adjusting screw will enter the limiting groove inside the cylinder. The limiting groove allows the adjusting screw to rotate and move up and down, but through the cooperation between the limiting plate and the groove, it prevents the adjusting screw from being completely unscrewed from the threaded cylinder. The function of this structure is to prevent the adjusting screw from accidentally falling off and to ensure the integrity and reliability of the leveling system.

[0012] The present invention is further configured such that an anti-slip pad is fixedly connected to one end of the top support frame. The anti-slip pad is made of synthetic rubber. When the top of the ladder leans against a wall, utility pole or equipment, the top support frame is the main stress point. The synthetic rubber anti-slip pad fixed to the end of the top support frame uses the high coefficient of friction and elastic deformation ability of the rubber material to firmly "grip" the contact surface.

[0013] The present invention is further configured such that an anti-slip plate is fixedly connected to the top of the pedal, the surface of the anti-slip plate is provided with anti-slip texture, the anti-slip plate is fixed to the top of the pedal, and the anti-slip texture (usually raised stripes or particles) on its surface provides greater friction by increasing the roughness of the contact surface between the sole of the shoe and the pedal. This structure directly serves the safety of the workers, and its function is to prevent the workers' feet from slipping when working at height.

[0014] The present invention is further configured such that a first limiting block is fixedly connected to the bottom of the main ladder frame and the top of the lower frame, and a second limiting block is fixedly connected to the bottom of the auxiliary ladder frame and the top of the extension frame. This is a set of mechanical hard limiting devices. When the main ladder frame and the lower frame are unfolded to the designed angle through the pivot, the first limiting blocks located on the two will abut against each other to prevent them from unfolding further. Similarly, the second limiting blocks located on the auxiliary ladder frame and the extension frame will also abut against each other when the auxiliary ladder assembly is fully unfolded. The function of this structure is to precisely control the unfolding angle and position of each component of the ladder to prevent structural damage or instability caused by over-expansion.

[0015] The present invention is further configured such that a handle is fixedly connected to one side of the main ladder frame, and the surface of the handle is covered with an anti-slip sleeve. The handle is fixed to the side of the main ladder frame to provide a point of leverage for handling. The anti-slip sleeve (usually rubber or plastic) on the surface of the handle increases the friction between the hand and the handle and provides a more comfortable grip. Although this design is simple, it is crucial. Its function is to greatly facilitate the handling and movement of the ladder and ensure the safety of the handling process.

[0016] The present invention has the following beneficial effects.

[0017] 1. This utility model, by adopting a design scheme in which the main ladder frame and the lower frame are hinged by a pivot and combined with a foldable auxiliary ladder component, successfully solves the prominent problems of existing ladders being "inconvenient to carry," "unable to be folded or disassembled," and "large in size and heavy in weight," which "requires truck loading during transportation." This structure allows the ladder to be folded into a compact whole when not in use, greatly reducing storage space and transportation volume. Construction personnel can easily carry it to remote work sites such as mountainous areas and suburbs, significantly improving the flexibility and response speed in mobile operations such as field repair of high-voltage power lines and coverage of low-voltage power lines.

[0018] 2. This utility model effectively solves the problem of "existing ladders lacking adaptive adjustment capabilities" by setting an independently adjustable support component at the bottom of the main ladder frame and equipping it with a top support frame and pedals with anti-slip function. This is achieved by setting an independently adjustable support component at the bottom of the main ladder frame and equipping it with a top support frame and pedals with anti-slip function. The height of each support point can be precisely adjusted by rotating the adjustment screw, so that the ladder can firmly adapt to various complex terrains and ensure the stability and levelness of the work platform. At the same time, the anti-slip pads of the top support frame, the anti-slip plates of the pedals, and the anti-slip particles of the support pads together constitute multiple anti-slip protections, fundamentally eliminating the risk of ladder slippage and overturning. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a 3D diagram of a highly stable climbing ladder used in high-voltage and low-voltage engineering.

[0021] Figure 2 A high-stability climbing ladder for use in high-voltage and low-voltage engineering Figure 1 A magnified view of a portion of point A in the middle.

[0022] Figure 3 This is a bottom-view schematic diagram of a highly stable climbing ladder used in high-voltage and low-voltage engineering.

[0023] Figure 4 A high-stability climbing ladder for use in high-voltage and low-voltage engineering Figure 3 A magnified view of a portion of point B in the middle.

[0024] Figure 5 This is a schematic diagram of the support components in a high-stability ladder used in high-voltage and low-voltage engineering.

[0025] Figure 6 This is a cross-sectional schematic diagram of a threaded cylinder in a high-stability ladder used in electrical engineering projects involving both high-voltage and low-voltage systems. In the attached diagram: 1. Main ladder frame; 2. Auxiliary ladder assembly; 3. Top support frame; 4. Rotating shaft; 5. Lower frame; 201. Step; 202. Auxiliary ladder frame; 203. Movable connecting piece; 204. Extension frame; 205. Locking plate; 206. Locking frame; 207. Locking bolt; 6. Support assembly; 601. Base plate; 602. Threaded cylinder; 603. Adjusting screw; 7. Support pad; 8. Handle. Detailed Implementation

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Please see Figure 1-6 This utility model is a highly stable climbing ladder for high-voltage and low-voltage engineering, including a main ladder frame 1, an auxiliary ladder assembly 2 on one side of the main ladder frame 1, a top support frame 3 fixedly connected to the top of the main ladder frame 1, a pivot 4 at the bottom of the main ladder frame 1, a lower frame 5 at the bottom of the pivot 4, an auxiliary ladder assembly 2 including a step 201, both sides of the step 201 being movably connected to the surface of the main ladder frame 1, an auxiliary ladder frame 202 movably connected to one side of the step 201, a movable connector 203 at the bottom of the auxiliary ladder frame 202, an extension frame 204 at the bottom of the movable connector 203, locking plates 205 movably connected to the front and back of the main ladder frame 1 and the lower frame 5, and locking frames 206 fixedly connected to the front and back of the auxiliary ladder frame 202 and the extension frame 204, with a locking bolt 207 penetrating through the top of the locking frame 206.

[0028] Specifically, the main structure of this ladder consists of a main ladder frame 1, a lower frame 5 hinged together by a pivot 4, and an auxiliary ladder assembly 2 located on one side. This split-type hinged design is the basis for the portability of this solution. When transportation or transfer is required, the operator can loosen the locking mechanism, allowing the main ladder frame 1 and the lower frame 5 to fold relative to each other around the pivot 4. At the same time, the auxiliary ladder frame 202 and the extension frame 204 in the auxiliary ladder assembly 2 can also be folded around the movable connector 203 and folded to the side of the main ladder frame 1, thereby significantly reducing the overall volume and space occupied by the ladder. This allows it to be easily placed in the trunk of an engineering vehicle, or even carried by a single construction worker to a field work site inaccessible by road.

[0029] Upon arrival at the work site, the ladder is unfolded. At this time, the locking plates 205 located on the main ladder frame 1 and the lower frame 5 can be aligned with the locking frames 206 fixed on the auxiliary ladder frame 202 and the extension frame 204. By screwing in the locking bolts 207, the unfolded auxiliary ladder assembly 2 can be firmly locked onto the main structure, forming a rigid integral ladder frame, ensuring the structural strength and safety during climbing. The top support frame 3 provides additional support points when the ladder leans against a building or equipment, and the anti-slip pad at its end effectively prevents the top from sliding.

[0030] A support assembly 6 is provided at the bottom of the main ladder frame 1. The support assembly 6 includes a base plate 601. The top of the base plate 601 is fixedly connected to the bottom of the main ladder frame 1. A threaded cylinder 602 is fixedly connected to the bottom of the base plate 601. An adjusting screw 603 is threadedly connected to the inner cavity of the threaded cylinder 602. A support pad 7 is movably connected to the bottom of the adjusting screw 603. The bottom of the support pad 7 is provided with anti-slip particles. A limit groove is formed on the inner wall of the threaded cylinder 602. A limit plate is fixedly connected to the top of the adjusting screw 603. The surface of the limiting plate is movably connected to the inner cavity of the limiting groove. One end of the top support frame 3 is fixedly connected to an anti-slip pad made of synthetic rubber. The top of the pedal 201 is fixedly connected to an anti-slip plate with anti-slip texture on its surface. The bottom of the main ladder frame 1 and the top of the lower frame 5 are both fixedly connected to a first limiting block. The bottom of the auxiliary ladder frame 202 and the top of the extension frame 204 are both fixedly connected to a second limiting block. One side of the main ladder frame 1 is fixedly connected to a handle 8 with an anti-slip sleeve on its surface.

[0031] Specifically: The support component 6 is the "leveling foot" of the ladder. When the ladder is placed on uneven ground, the construction workers can rotate each adjusting screw 603. Since the adjusting screw 603 is engaged with the threaded cylinder 602 fixed at the bottom of the main ladder frame 1 through threaded engagement, the rotational action is converted into linear movement of the adjusting screw 603 in the vertical direction, thereby achieving fine adjustment of the support height. Even if the ground heights of the four support points are different, the top of the ladder can be kept level through independent adjustment. The support pad 7 is installed at the bottom of the adjusting screw 603 through a movable connection, so that it can adapt to small angle changes when in contact with the ground, ensuring that the bottom surface is completely in contact with the ground. The anti-slip particles are... By increasing the surface roughness between the support pad 7 and the ground to maximize static friction, this design acts as an efficiency enhancer for the support component 6. Its function is to optimize grounding performance and provide ultimate anti-slip protection. This is a safety interlock mechanism: when the adjusting screw 603 is screwed into the threaded cylinder 602, the limiting plate fixed to the top of the adjusting screw 603 enters the limiting groove inside the cylinder. The limiting groove allows the adjusting screw 603 to rotate and move up and down, but through the cooperation of the limiting plate and the groove, it prevents the adjusting screw 603 from completely disengaging from the threaded cylinder 602. The function of this structure is to prevent the adjusting screw 603 from accidentally falling off, ensuring the integrity and reliability of the leveling system. When the top of the ladder leans against... When used on walls, utility poles, or equipment, the top support frame 3 is the main stress point. The synthetic rubber anti-slip pad fixed to the end of the top support frame 3 utilizes the high coefficient of friction and elastic deformation capacity of rubber to firmly "grip" the contact surface. The anti-slip plate is fixed to the top of the pedal 201; its surface anti-slip texture is usually raised stripes or particles that increase the roughness of the contact surface between the shoe sole and the pedal 201, providing greater friction. This structure directly serves the safety of workers, preventing slippage when working at heights. This is a set of mechanical hard limit devices. When the main ladder frame 1 and the lower frame 5 are extended to the designed angle via the pivot 4, the first... One limiting block will abut against each other to prevent it from unfolding further. Similarly, the second limiting blocks located on the auxiliary ladder frame 202 and the extension frame 204 will also abut against each other when the auxiliary ladder assembly 2 is fully unfolded. The function of this structure is to precisely control the unfolding angle and position of each component of the ladder, and to prevent structural damage or instability caused by over-expansion. The handle 8 is fixed to the side of the main ladder frame 1 to provide a point of leverage for handling. The anti-slip sleeve on the surface of the handle 8 is usually made of rubber or plastic to increase the friction between the hand and the handle 8 and provide a more comfortable grip. Although this design is simple, it is crucial. Its function is to greatly facilitate the handling and movement of the ladder and ensure the safety of the handling process.

[0032] The working principle of this utility model is as follows: First, using the folding hub formed by the pivot 4 and the movable connector 203, the ladder can be quickly unfolded from a compact transport state to a working state. It is then quickly and rigidly fixed by the bolts of the locking plate 205 and the locking frame 206, which greatly improves the deployment efficiency. Subsequently, by adjusting the adjusting screws 603 under each support point, the extension length can be changed to cope with uneven ground, so that the ladder can obtain stable support in any harsh outdoor environment. The support pad 7 at the bottom and the anti-slip particles work together to provide excellent anti-slip performance. Throughout the process, the anti-slip pad of the top support frame 3, the anti-slip plate of the pedal 201, and the anti-slip sleeve of the side handle 8 together create a comprehensive safe user experience.

[0033] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A high-stability ladder for high-voltage and low-voltage engineering, comprising a main ladder frame (1), characterized in that: An auxiliary ladder assembly (2) is provided on one side of the main ladder frame (1), a top support frame (3) is fixedly connected to the top of the main ladder frame (1), a rotating shaft (4) is provided at the bottom of the main ladder frame (1), and a lower frame (5) is provided at the bottom of the rotating shaft (4). The auxiliary ladder assembly (2) includes a tread (201), both sides of which are movably connected to the surface of the main ladder frame (1). An auxiliary ladder frame (202) is movably connected to one side of the tread (201). A movable connector (203) is provided at the bottom of the auxiliary ladder frame (202). An extension frame (204) is provided at the bottom of the movable connector (203). Locking plates (205) are movably connected to the front and back of the main ladder frame (1) and the lower frame (5). Locking frames (206) are fixedly connected to the front and back of the auxiliary ladder frame (202) and the extension frame (204). A locking bolt (207) is connected through the top of the locking frame (206).

2. The high-stability climbing ladder for high-voltage and low-voltage engineering according to claim 1, characterized in that: The bottom of the main ladder frame (1) is provided with a support assembly (6), the support assembly (6) includes a base plate (601), the top of the base plate (601) is fixedly connected to the bottom of the main ladder frame (1), the bottom of the base plate (601) is fixedly connected with a threaded cylinder (602), and the inner cavity of the threaded cylinder (602) is threadedly connected with an adjusting screw (603).

3. A high-stability climbing ladder for high-voltage and low-voltage engineering according to claim 2, characterized in that: The bottom of the adjusting screw (603) is movably connected to a support pad (7), and the bottom of the support pad (7) is provided with anti-slip particles.

4. A high-stability climbing ladder for high-voltage and low-voltage engineering according to claim 2, characterized in that: The inner wall of the threaded cylinder (602) is provided with a limiting groove, and the top of the adjusting screw (603) is fixedly connected to a limiting disk, the surface of the limiting disk being movably connected to the inner cavity of the limiting groove.

5. A high-stability climbing ladder for high-voltage and low-voltage engineering according to claim 1, characterized in that: One end of the top support frame (3) is fixedly connected to an anti-slip pad, which is made of synthetic rubber.

6. A high-stability climbing ladder for high-voltage and low-voltage engineering according to claim 1, characterized in that: The top of the pedal (201) is fixedly connected to an anti-slip plate, and the surface of the anti-slip plate is provided with anti-slip texture.

7. A high-stability climbing ladder for high-voltage and low-voltage engineering according to claim 1, characterized in that: The bottom of the main ladder (1) and the top of the lower frame (5) are both fixedly connected to a first limiting block, and the bottom of the auxiliary ladder (202) and the top of the extension frame (204) are both fixedly connected to a second limiting block.

8. A high-stability climbing ladder for high-voltage and low-voltage engineering according to claim 1, characterized in that: A handle (8) is fixedly connected to one side of the main ladder frame (1), and the surface of the handle (8) is covered with an anti-slip sleeve.

Images