Self-standing combined telescopic insulating ladder

Abstract

The utility model relates to the technical field of electric appliances, and discloses a self-standing combined type telescopic insulating ladder which comprises two main ladder assemblies, connecting mechanisms are arranged on the outer walls of the two main ladder assemblies, supporting mechanisms are arranged on the sides, away from each other, of the outer walls of the two main ladder assemblies, sliding grooves are formed in the adjacent sides of the outer walls of the two main ladder assemblies, and the connecting mechanisms are arranged on the outer walls of the two main ladder assemblies. Two sliding grooves are formed in the two main ladder frames, the same inner ladder mechanism is arranged on the adjacent sides of the two sliding grooves, a plurality of main pedals are fixedly connected to the adjacent sides of the outer walls of the two main ladder frames, locking mechanisms are arranged on the rear sides of the outer walls of the two main ladder frames, the connecting mechanism comprises a clamping shell, and the outer wall of the clamping shell is fixedly connected to the outer walls of the main ladder frames. According to the utility model, through the matching of the clamping blocks and the inclined surfaces of the clamping shells, the elastic locking of the springs and the fastening of the bolts, the combination of a plurality of insulating ladders is realized, the requirements of operation in areas with different height differences are met, the application range of the insulating ladders is expanded, and the use efficiency of equipment is improved.

Description

A self-supporting, modular telescopic insulated ladder Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to a self-supporting, modular telescopic insulated ladder. Background Technology

[0002] In the daily inspection and maintenance work of the power industry, insulated ladders are an indispensable tool, used by workers to climb to high places to perform equipment inspections and line repairs. Due to the special nature of the power working environment, the safety, flexibility and applicability requirements of insulated ladders are extremely high.

[0003] A search revealed Chinese Patent Publication No. CN208734265U, which discloses an insulated ladder and its usage method. The ladder includes a main ladder step and an auxiliary ladder step, both of which are insulators. Each ladder step has an insulated support. The top of the main ladder step has a hinge hole, the axis of which is parallel to the insulated support. A hinge shaft is positioned at a predetermined location at the bottom of the auxiliary ladder step, parallel to the insulated support. The main ladder step and the auxiliary ladder step are rotatably connected via the hinge hole and the hinge shaft. The main ladder is equipped with a fastener at its top, which is used to fix the main ladder and the auxiliary ladder. The auxiliary ladder is equipped with a voltage detection device at its top, which includes a voltage detector and an alarm electrically connected to the voltage detector. However, in actual use, this insulated ladder is an independent unit and lacks a structure for combining multiple insulated ladders, thus limiting its application scope. In terms of cost, because it cannot be used in combination, companies need to equip themselves with a variety of special equipment due to the diversity of work scenarios, which increases the cost of equipment procurement, storage and maintenance. Summary of the Invention

[0004] To overcome the above shortcomings, this utility model provides a self-standing modular telescopic insulated ladder, which aims to improve the problem that the existing technology lacks a structure that can combine multiple insulated ladders, thus limiting its application scope.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a self-supporting combined telescopic insulated ladder, comprising two main ladder frames, each main ladder frame having a connecting mechanism on its outer wall, a supporting mechanism on the opposite side of the outer walls of the two main ladder frames, a sliding groove on the adjacent side of the outer walls of the two main ladder frames, the same inner ladder mechanism on the adjacent side of the two sliding grooves, multiple main steps fixedly connected to the adjacent side of the outer walls of the two main ladder frames, and a locking mechanism on the rear side of the outer walls of the two main ladder frames;

[0006] The connecting mechanism includes a retaining case, the outer wall of which is fixedly connected to the outer wall of the main ladder frame. The outer wall of the main ladder frame has a guide block, the inner wall of which is slidably connected to a guide groove. The outer wall of the guide groove is fixedly connected to a retaining block. The outer wall of the retaining block is fixedly connected to two guide plates. The outer walls of the two guide plates are fixedly connected to the same lever plate. The outer wall of the main ladder frame is fixedly connected to a fixing seat, the outer wall of which is fixedly connected to a spring. The outer wall of the main ladder frame is provided with two fastening components.

[0007] Through the above technical solution: the cooperation of the locking shell and the locking block realizes the initial locking of the insulated ladder; the spring provides elastic locking force, making the combination operation simple and efficient; the guide block and guide groove ensure the precise and stable sliding of the locking block, ensuring the reliability of the connection; the guide plate and the lever plate facilitate manual control of the locking block movement and facilitate disassembly; the fastening component connects mounting block one and mounting block two with bolts, further enhancing the connection strength and being able to withstand high-strength tensile and compressive forces. This design realizes the rapid combination and separation of multiple insulated ladders, meets the operation needs of areas with different height differences, expands the application range of insulated ladders, improves equipment utilization efficiency, and reduces the cost of equipping multiple special equipment.

[0008] As a further description of the above technical solution:

[0009] The support mechanism includes a first rotating shaft, the outer wall of which is fixedly connected to the middle of the outer wall of the main ladder frame. A support leg is rotatably connected to the outer wall of the first rotating shaft. A second rotating shaft is fixedly connected to the outer wall of the support leg. A connecting plate is rotatably connected to the outer wall of the second rotating shaft. Multiple slots are provided on the outer wall of the connecting plate. A pin is fixedly connected to the lower middle part of the outer wall of the main ladder frame.

[0010] Through the above technical solution: the outriggers can rotate and unfold around the pivot to share the weight of the ladder. The connecting plate can be adjusted at an angle through the pivot and cooperate with the slots and pins to adapt to different ground conditions and work requirements. The pins are inserted into the slots to form a stable triangular structure, which enhances the stability of the insulated ladder, ensures work safety, and the support mechanism is easy to fold up quickly, making it convenient for transportation and storage and improving the practicality of the equipment.

[0011] As a further description of the above technical solution:

[0012] The inner ladder mechanism includes two inner ladder frames, which are slidably connected to the inner walls of two slide grooves. Multiple inner steps are fixedly connected to the inner walls of both inner ladder frames, and auxiliary components are provided on the outer walls of both inner ladder frames.

[0013] The above technical solution allows for the adjustment of the insulated ladder length by sliding the inner ladder frame within the slide groove, while the inner step provides a platform for stepping on it. Auxiliary components assist in positioning, meeting the needs of different height operations and improving the versatility of the insulated ladder.

[0014] As a further description of the above technical solution:

[0015] The locking mechanism includes multiple locking plates, the front sides of the outer walls of the multiple locking plates are rotatably connected to the rear side of the outer wall of the main ladder frame, the rear side of the outer wall of the main ladder frame is provided with multiple insertion holes, and the inner walls of the bottom insertion holes are slidably connected with insertion plates.

[0016] The above technical solution involves inserting a plate into a hole aligned with the slider to restrict the sliding of the inner ladder frame, and rotating a locking plate to block the plate and prevent it from sliding out, thus ensuring that the inner ladder frame is securely locked and guaranteeing operational safety.

[0017] As a further description of the above technical solution:

[0018] The fastening assembly includes two mounting blocks 1, the outer walls of the two mounting blocks 1 are respectively fixedly connected to the front and rear sides of the outer wall of the main ladder frame, and mounting blocks 2 are fixedly connected to the front and rear sides of the outer wall of the main ladder frame, and bolts are threadedly connected to the inner walls of the two mounting blocks 2.

[0019] Through the above technical solution, the bolt passes through the second mounting block and is fastened to the first mounting block, generating a preload force, which further strengthens the connection strength of the assembled insulated ladder, enabling it to withstand greater external forces.

[0020] As a further description of the above technical solution:

[0021] The auxiliary component includes a slider, the outer wall of which is fixedly connected to the outer wall of the inner ladder frame, and a sliding buckle is fixedly connected to the outer wall of the slider. The inner wall of the main ladder frame has multiple buckle holes.

[0022] The above technical solution enhances the sliding stability of the inner ladder frame by cooperating with the slider and the groove, and the interaction between the sliding buckle and the buckle hole generates a locking feedback, which facilitates precise positioning of the extension and retraction position of the inner ladder frame.

[0023] As a further description of the above technical solution:

[0024] The top of each of the main treads is provided with anti-slip texture, and multiple anti-slip protrusions are fixedly connected to the front side of the outer wall of each of the two main ladder frames.

[0025] The above technical solutions increase the friction of the steps and ladder surfaces by using anti-slip textures and anti-slip bumps, preventing workers from slipping when climbing and standing, and improving work safety.

[0026] As a further description of the above technical solution:

[0027] The rear end of the spring is fixedly connected to the front side of the outer wall of the block, and the outer walls of the two guide plates are slidably connected to the inner wall of the fixed seat.

[0028] Through the above technical solution: the spring provides elastic driving force to the locking block to achieve automatic locking, and the guide plate slides in the fixed seat to ensure smooth sliding of the locking block and reliable operation of the connecting mechanism.

[0029] As a further description of the above technical solution:

[0030] This utility model has the following beneficial effects:

[0031] 1. In this utility model, multiple insulated ladders are combined by the inclined surface cooperation of the locking block and the locking shell, the elastic locking of the spring, and the fastening of the bolts. This meets the needs of working in areas with different height differences, expands the application range of insulated ladders, improves the efficiency of equipment use, and reduces the cost of equipping multiple special equipment due to the limitations of the working scene. At the same time, through the threaded fastening connection of the bolts, mounting block one and mounting block two in the fastening assembly, the combined insulated ladder can withstand high-strength tensile and compressive forces, meeting the load-bearing requirements in complex working environments.

[0032] 2. In this utility model, the support leg is rotatably connected to the main ladder frame by a pivot shaft, which enables quick unfolding and folding. The pivot shaft, in conjunction with the connecting plate, can adjust the angle for precise positioning. The slot of the connecting plate cooperates with the clips of the main ladder frame, which can adjust the support angle according to different ground conditions and needs. The clips are inserted into the slots to form a triangular structure, which enhances the structural stability and prevents shaking or tipping during use. Attached Figure Description

[0033] Figure 1 is a perspective view of a self-supporting combined telescopic insulated ladder proposed in this utility model;

[0034] Figure 2 is a front view of a self-supporting combined telescopic insulated ladder proposed in this utility model;

[0035] Figure 3 is a schematic diagram of the connection mechanism of a self-supporting combined telescopic insulated ladder proposed in this utility model.

[0036] Figure 4 is a structural schematic diagram of the support mechanism of a self-supporting combined telescopic insulated ladder proposed in this utility model.

[0037] Figure 5 is a schematic diagram of the internal ladder mechanism of a self-supporting combined telescopic insulated ladder proposed in this utility model.

[0038] Figure 6 is a schematic diagram of the locking mechanism of a self-supporting combined telescopic insulated ladder proposed in this utility model.

[0039] Legend:

[0040] 1. Main ladder frame; 2. Connecting mechanism; 201. Clamping case; 202. Guide block; 203. Guide groove; 204. Clamping block; 205. Guide plate; 206. Pulley; 207. Fixed seat; 208. Spring; 209. Fastening assembly; 2091. Mounting block one; 2092. Mounting block two; 2093. Bolt; 3. Support mechanism; 301. Rotating shaft one; 302. Support leg; 303 1. Rotating shaft 2; 304. Connecting plate; 305. Slot; 306. Clip; 4. Inner ladder mechanism; 401. Inner ladder frame; 402. Inner pedal; 403. Auxiliary component; 4031. Slider; 4032. Sliding buckle; 4033. Buckle hole; 5. Locking mechanism; 501. Locking plate; 502. Insertion hole; 503. Insertion plate; 6. Slide groove; 7. Main pedal; 8. Anti-slip texture; 9. Anti-slip protrusion. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0042] Referring to Figures 1, 2, and 3, this utility model provides an embodiment of a self-supporting, modular, telescopic insulated ladder, comprising two main ladder frames 1. Each main ladder frame 1 has a connecting mechanism 2 on its outer wall, which connects the two insulated ladders together. Each main ladder frame 1 has a supporting mechanism 3 on its outer wall on opposite sides, which supports the insulated ladders during use. Each main ladder frame 1 has a sliding groove 6 on an adjacent side of its outer wall, and an inner ladder mechanism 4 on an adjacent side of each sliding groove 6, which increases the length of a single insulated ladder. Multiple main steps 7 are fixedly connected to each adjacent side of the outer wall of each main ladder frame 1. Each main ladder frame 1 has a locking mechanism 5 on its rear side of its outer wall, which fixes the inner ladder mechanism 4 at different positions within the insulated ladder.

[0043] The connecting mechanism 2 includes a retaining shell 201. The outer wall of the retaining shell 201 is fixedly connected to the outer wall of the main ladder frame 1, providing engagement space for the retaining block 204 to achieve initial connection and positioning between the insulated ladders. A guide block 202 is provided on the outer wall of the main ladder frame 1 to provide a guide track for the sliding of the guide groove 203 and the retaining block 204, ensuring the stability and accuracy of the movement of the retaining block 204. The inner wall of the guide block 202 is slidably connected to the guide groove 203, which cooperates with the guide block 202 to form a sliding pair, driving the retaining block 204 to move in a preset direction. The outer wall of the guide groove 203 is fixedly connected to the retaining block 204, achieving initial locking of the two insulated ladders through engagement with the retaining shell 201. The outer wall of the retaining block 204 is fixedly connected to two guide plates 20. 5. The guide plate 206 provides auxiliary guidance for the sliding of the locking block 204 and works in conjunction with the lever plate 206 to facilitate manual control of the movement of the locking block 204 by the operator. The outer walls of both guide plates 205 are fixedly connected to the same lever plate 206, allowing the operator to manually move the locking block 204 to achieve the separation and engagement of the locking block 204 and the locking housing 201. A fixed base 207 is fixedly connected to the outer wall of the main ladder frame 1, providing a mounting support structure for the spring 208 and guide plates 205, ensuring the relative stability of each component. A spring 208 is fixedly connected to the outer wall of the fixed base 207, using elastic potential energy to push the locking block 204 into the locking housing 201, achieving an automatic locking function. The rear end of the spring 208 is fixedly connected to the front side of the outer wall of the locking block 204, allowing the spring to... The elastic force of the spring 208 is transmitted to the locking block 204. The outer walls of the two guide plates 205 are slidably connected to the inner wall of the fixed seat 207, sliding within the fixed seat 207, further restricting the movement trajectory of the locking block 204 and ensuring the smoothness of the sliding of the locking block 204. The outer wall of the main ladder frame 1 is provided with two fastening components 209, which are used to reinforce the two initially locked insulated ladders and enhance the connection strength. The fastening component 209 includes two mounting blocks 1 2091, which provide a connection base for the installation of bolts 2093 and cooperate with mounting block 2092 to realize the fastening connection of the insulated ladders. The outer walls of the two mounting blocks 1 2091 are respectively fixedly connected to the front and rear sides of the outer wall of the main ladder frame 1, as part of the fastening component 209, providing bolts. The fixed end connected by bolt 2093, the front and rear sides of the outer wall of the main ladder frame 1 are fixedly connected with mounting block 2092, which is set in correspondence with mounting block 2091. The two insulated ladders are firmly connected by the threaded connection of bolt 2093. The inner walls of the two mounting blocks 2092 are threaded with bolt 2093. By tightening the bolt 2093, a pre-tightening force is generated to tightly connect the two insulated ladders into one. The top of the multiple main steps 7 is provided with anti-slip texture 8 to increase the friction of the step surface, prevent the operator from slipping when stepping on it, and improve the safety of operation. The front side of the outer wall of the two main ladder frames 1 is fixedly connected with multiple anti-slip protrusions 9 to further enhance the anti-slip performance of the outer wall of the main ladder frame 1 and provide reliable gripping points for the operator to climb.

[0044] Specifically, during assembly, the bottom of one ladder is aligned with the top of the other ladder and pushed in. After the inclined surface of the lower insulating ladder block 204 contacts the inner wall of the upper housing 201, it slides backward, compressing the spring 208. After the block 204 slides into the housing 201, the spring 208 releases its potential energy to push the block 204 into the locking position, completing the initial fixation. Then, bolts 2093 are used to pass through the second mounting block 2092 and fasten it to the first mounting block 2091 to enhance the connection strength. During disassembly, the bolts 2093 are first loosened to release the constraint. The lever plate 206 is then moved to drive the guide plate 205 and the block 204 to slide forward, compressing the spring 208 and separating the two ladders. This allows the block 204 to slide out along the inner wall of the housing 201, achieving quick disassembly while ensuring both ease of operation and connection stability.

[0045] Referring to Figures 1 and 4, the support mechanism 3 includes a first pivot 301, which serves as the axis for the rotation of the support leg 302, enabling the support leg 302 to rotate and unfold relative to the main ladder frame 1. The support leg 302 is rotatably connected to the outer wall of the first pivot 301, serving as a load-bearing component of the support mechanism 3. By rotating around the first pivot 301, the support angle is adjusted to share the weight of the ladder body. A second pivot 303 is fixedly connected to the outer wall of the support leg 302, serving as the axis for the rotation of the connecting plate 304, allowing the connecting plate 304 to adjust its angle relative to the support leg 302. The outer wall of the second 303 is rotatably connected to the connecting plate 304. By rotating, the relative position of the slot 305 and the pin 306 is changed, so as to adjust and lock the support angle. The outer wall of the connecting plate 304 has multiple slots 305, which cooperate with the pin 306 to realize the positioning of the support angle. Multiple slots 305 can adapt to the needs of different tilt angles. The lower middle part of the outer wall of the main ladder frame 1 is fixedly connected to the pin 306, which is inserted into the slot 305 to form a mechanical lock, so that the main ladder frame 1, the support leg 302 and the connecting plate 304 form a stable triangular support structure.

[0046] Specifically, the insulated ladder support mechanism 3 uses two rotating shafts, slots 305, and fasteners 306 to achieve rapid deployment and stable fixation. Before use, the operator tilts the insulated ladder and rotates the outriggers 302 outward around the rotating shaft 301. The outriggers are adjusted to a suitable position according to the ground conditions and operational needs to ensure that they can effectively bear the load. Then, the connecting plate 304 is rotated so that the slots 305 on its outer wall are aligned with the fasteners 306 on the main ladder frame 1, allowing the fasteners 306 to engage with the slots 305. At this point, the main ladder frame 1, the outriggers 302, and the slots 305 form a stable triangular structure, ensuring operational stability. After the operation is completed, the fasteners 306 are removed, and the connecting plate 304 and the outriggers 302 are rotated in the opposite direction to fit against the outer wall of the main ladder frame 1 for easy storage and transportation. This mechanism, through the coordinated operation of multiple components, improves the safety and applicability of the insulated ladder in complex environments.

[0047] Referring to Figures 1, 5, and 6, the inner ladder mechanism 4 includes two inner ladder frames 401, used to adjust the overall length of the insulated ladder through sliding extension and retraction to adapt to different working height requirements. The two inner ladder frames 401 are slidably connected to the inner walls of two slide grooves 6, providing guidance and support for the sliding of the inner ladder frames 401 and ensuring smooth extension and retraction. Multiple inner steps 402 are fixedly connected to the inner walls of both inner ladder frames 401, providing a platform for workers to step on, forming a continuous climbing path in conjunction with the main step 7. Auxiliary components 403 are provided on the outer walls of both inner ladder frames 401 to assist in the positioning and locking operations of the inner ladder frames 401. The auxiliary components 403 include sliders 4031, which cooperate with the slide grooves 6 to enhance the stability of the inner ladder frames 401 during sliding and provide an installation base for the sliding buckles 4032. The outer wall of the slider 4031 is fixedly connected to the outer wall of the inner ladder frames 401, fixing the slider 4031 and the inner ladder frames 401 as one unit to ensure synchronous movement. The outer wall of the main ladder frame 1 is fixedly connected with a sliding buckle 4032, which cooperates with the buckle hole 4033 on the inner wall of the main ladder frame 1 to generate a locking feedback, making it easy for the operator to accurately position the extension and retraction of the inner ladder frame 401. The inner wall of the main ladder frame 1 has multiple buckle holes 4033, which cooperate with the sliding buckle 4032 to achieve positioning of the inner ladder frame 401 during the extension and retraction process. The locking mechanism 5 includes multiple locking plates 501, which are used to limit the insertion plate 503 inserted into the insertion hole 502 to prevent the insertion plate 503 from accidentally sliding out. The multiple locking plates 501 The front side of the outer wall is rotatably connected to the rear side of the outer wall of the main ladder frame 1, providing a fulcrum for the locking plate 501 to realize the opening and closing operation of the locking plate 501. The rear side of the outer wall of the main ladder frame 1 is provided with multiple insertion holes 502 for inserting the insertion plate 503 after aligning with the slider 4031, thereby restricting the sliding of the inner ladder frame 401. The inner wall of the bottom insertion hole 502 is slidably connected to the insertion plate 503, which is inserted into the insertion hole 502 aligned with the slider 4031, passing through the slider 4031, thereby locking and fixing the inner ladder frame 401.

[0048] Specifically, when the ladder length needs to be extended, the operator holds the inner step 402 and applies force. The inner ladder frame 401 rises smoothly along the inner wall slide groove 6 of the main ladder frame 1, and the outer wall slider 4031 slides synchronously. The sliding buckle 4032 on the slider 4031 interacts with the buckle hole 4033 on the inner wall of the main ladder frame 1. Each time it passes through the buckle hole 4033, a locking feedback is generated to assist in precise positioning and ensure that the inner step 402 and the main step 7 remain flush. After positioning, the insert plate 503 is inserted through the slider 4031 to the corresponding insertion hole 502 to restrict the sliding of the inner ladder frame 401. Then, the locking plate 501 is rotated to abut the insert plate 503, forming a mechanical double lock to ensure the structural stability during operation. When shortening the ladder length after operation, the locking plate 501 is reversed to release the limit, the insert plate 503 is pulled out, and then the inner ladder frame 401 is pressed down to retract, so that the inner ladder mechanism 4 fits against the main ladder frame 1 for easy storage and transportation.

[0049] Working Principle: When two insulated ladders need to be combined, the operator aligns the bottom of one insulated ladder with the top of the other, pushing the lower ladder closer to the upper ladder. During this process, the locking block 204 of the lower ladder contacts the entrance of the locking housing 201 of the upper ladder, and the inclined surface of the locking block 204 contacts the inner wall of the locking housing 201. Under the pushing force, the locking block 204 slides backward along the inclined surface. At this time, the spring 208, which is fixedly connected to the front of the locking block 204, is compressed, accumulating elastic potential energy. When the locking block 204 completely slides into the housing 201, the spring 208 loses external pressure and begins to release elastic potential energy, pushing the locking block 204 forward to lock into the locking position of the housing 201, completing the initial locking and fixing. To further enhance the connection strength, the operator uses a tight... The fastening component 209 is used to fasten the bolt 2093 through the threaded hole in the inner wall of the second mounting block 2092 to the first mounting block 2091. The pre-tightening force of the bolt 2093 firmly connects the two insulated ladders together, which can withstand high-strength tensile and compressive forces. When the operation is completed and the insulated ladders need to be disassembled, the operator first unscrews the bolt 2093 to release the mechanical constraint of the fastening component 209. Then, the operator moves the lever 206 forward. The lever 206 drives the locking block 204 to slide forward along the track of the guide block 202 and the guide groove 203 through the fixedly connected guide plate 205, compressing the spring 208. While the locking block 204 slides, the operator simultaneously pulls the two insulated ladders apart to the sides, so that the locking block 204 slides out along the inner wall of the housing 201, and finally achieves the separation of the two insulated ladders.

[0050] Furthermore, before using the insulated ladder, the operator should first tilt the ladder so that it forms a certain angle with the ground. Then, the operator should hold the outrigger 302 and rotate it outward around the pivot 301 until it reaches a suitable extended position. This position needs to be adjusted according to the ground conditions and work requirements to ensure that the outrigger 302 can effectively distribute the weight of the ladder. After the outrigger 302 is extended, rotate the connecting plate 304 to a suitable angle, and then align one of the slots 305 with the pin 306, so that the pin 306 engages in the slot 305. The design of multiple slots 305 can accommodate different tilt angles. The insulated ladder meets the needs of diverse work scenarios. After the clip 306 is inserted into the slot 305, the main ladder frame 1, the support leg 302 and the slot 305 together form a stable triangular structure. When the work is completed and the support mechanism 3 needs to be retracted, the operator only needs to pull the clip 306 out of the slot 305 and rotate the connecting plate 304 and the support leg 302 in the opposite direction to make them fit against the outer wall of the main ladder frame 1, which is convenient for transportation and storage. The design of the entire support mechanism 3, through the ingenious cooperation of the two rotating shafts, the slot 305 and the clip 306, realizes the rapid deployment and stable fixation of the support, effectively improving the safety and applicability of the insulated ladder in complex working environments.

[0051] When the length of a single insulated ladder needs to be extended, the operator grips the inner step 402 and applies upward force, allowing the inner ladder frame 401 to rise smoothly along the slide rail 6. During this process, the slider 4031, fixedly connected to the outer wall of the inner ladder frame 401, slides synchronously with the inner ladder frame 401 within the slide rail 6. The sliding buckle 4032 fixedly connected to the slider 4031 interacts with multiple buckle holes 4033 opened on the inner wall of the main ladder frame 1 during the sliding process. Each time it passes through a buckle hole 4033, the sliding buckle 4032 will stop briefly due to its own structural characteristics. This stopping not only provides the operator with clear tactile and auditory feedback, but also effectively prevents the inner ladder frame 401 from becoming uncontrollable due to excessive sliding speed. This allows the operator to accurately position the inner ladder mechanism 4 according to actual needs, ensuring that the bottom inner step 402 is always flush with the outer main step 7, providing the operator with a continuous and stable stepping surface. After mechanism 4 is adjusted to the appropriate position, it needs to be locked and fixed. The operator inserts the insert plate 503 into the insertion hole 502 that is flush with the slider 4031. Since the slider 4031 is in a specific position, the insert plate 503 can pass smoothly through the slider 4031, thereby restricting the slider 4031 from sliding up and down. Then, the operator rotates the locking plate 501. After rotation, the locking plate 501 will abut against the insert plate 503, positioning the insert plate 503 in the current position to prevent the insert plate 503 from accidentally sliding out, forming a stable locking effect. This ensures that the inner ladder mechanism 4 will not be displaced due to external forces during operation, thus ensuring the safety of the operator. When the length of the insulated ladder needs to be shortened after the operation is completed, the operator reverses the operation. First, rotate the locking plate 501 to release the restriction on the insert plate 503, then pull out the insert plate 503, and then slide the inner ladder mechanism 4 down to return it to the initial position, which facilitates the transportation and storage of the insulated ladder.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A self-supporting, modular, telescopic, insulated ladder, comprising two main ladder frames (1), characterized in that: Both main ladder frames (1) are provided with connecting mechanisms (2) on their outer walls. Both main ladder frames (1) are provided with supporting mechanisms (3) on opposite sides of their outer walls. Both main ladder frames (1) are provided with sliding grooves (6) on adjacent sides of their outer walls. Both sliding grooves (6) are provided with the same inner ladder mechanism (4) on adjacent sides of their adjacent sides. Both main ladder frames (1) are fixedly connected with multiple main steps (7) on adjacent sides of their outer walls. Both main ladder frames (1) are provided with locking mechanisms (5) on the rear side of their outer walls. The connecting mechanism (2) includes a retaining shell (201). The outer wall of the retaining shell (201) is fixedly connected to the outer wall of the main ladder frame (1). The outer wall of the main ladder frame (1) is provided with a guide block (202), the inner wall of the guide block (202) is slidably connected with a guide groove (203), the outer wall of the guide groove (203) is fixedly connected with a locking block (204), the outer wall of the locking block (204) is fixedly connected with two guide plates (205), the outer walls of the two guide plates (205) are fixedly connected with the same lever plate (206), the outer wall of the main ladder frame (1) is fixedly connected with a fixing seat (207), the outer wall of the fixing seat (207) is fixedly connected with a spring (208), and the outer wall of the main ladder frame (1) is provided with two fastening components (209).

2. The self-supporting, modular, telescopic, insulated ladder according to claim 1, characterized in that: The support mechanism (3) includes a first rotating shaft (301), the outer wall of which is fixedly connected to the middle of the outer wall of the main ladder frame (1), a support leg (302) is rotatably connected to the outer wall of the first rotating shaft (301), a second rotating shaft (303) is fixedly connected to the outer wall of the support leg (302), a connecting plate (304) is rotatably connected to the outer wall of the second rotating shaft (303), a plurality of slots (305) are provided on the outer wall of the connecting plate (304), and a fastener (306) is fixedly connected to the lower middle part of the outer wall of the main ladder frame (1).

3. The self-supporting, modular, telescopic, insulated ladder according to claim 1, characterized in that: The inner ladder mechanism (4) includes two inner ladder frames (401), which are slidably connected to the inner walls of two slide grooves (6). Multiple inner pedals (402) are fixedly connected to the inner walls of the two inner ladder frames (401), and auxiliary components (403) are provided on the outer walls of the two inner ladder frames (401).

4. The self-supporting, modular, telescopic, insulated ladder according to claim 1, characterized in that: The locking mechanism (5) includes multiple locking plates (501). The front side of the outer wall of each locking plate (501) is rotatably connected to the rear side of the outer wall of the main ladder frame (1). Multiple insertion holes (502) are provided on the rear side of the outer wall of the main ladder frame (1). Insert plates (503) are slidably connected to the inner wall of the bottom insertion hole (502).

5. A self-supporting, modular, telescopic, insulated ladder according to claim 1, characterized in that: The fastening assembly (209) includes two mounting blocks (2091), the outer walls of the two mounting blocks (2091) are respectively fixedly connected to the front and rear sides of the outer wall of the main ladder frame (1), and mounting blocks (2092) are fixedly connected to the front and rear sides of the outer wall of the main ladder frame (1), and bolts (2093) are threadedly connected to the inner walls of the two mounting blocks (2092).

6. A self-supporting, modular, telescopic, insulated ladder according to claim 3, characterized in that: The auxiliary component (403) includes a slider (4031), the outer wall of which is fixedly connected to the outer wall of the inner ladder frame (401), and the outer wall of the slider (4031) is fixedly connected with a sliding buckle (4032). The inner wall of the main ladder frame (1) is provided with multiple buckle holes (4033).

7. A self-supporting, modular, telescopic, insulated ladder according to claim 1, characterized in that: The top of each of the main pedals (7) is provided with anti-slip texture (8), and the front side of the outer wall of each of the two main ladder frames (1) is fixedly connected with multiple anti-slip protrusions (9).

8. A self-supporting, modular, telescopic, insulated ladder according to claim 1, characterized in that: The rear end of the spring (208) is fixedly connected to the front side of the outer wall of the block (204), and the outer walls of the two guide plates (205) are slidably connected to the inner wall of the fixed seat (207).

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