Crawling ladder with adjustable telescopic height

Abstract

The utility model relates to the technical field of crawling ladders, in particular to a telescopic height-adjustable crawling ladder, which comprises a mounting block, the fixing ladder is fixedly connected to the bottom of the mounting block, the fixing assembly is arranged outside the mounting block, a connecting seat is fixedly connected to the outside of the mounting block, a motor is fixedly connected to the outside of the connecting seat, a worm is fixedly connected to the output end of the motor, the motor is used for driving the worm to rotate, and a worm gear is meshed with the outside of the worm. The exterior of the worm gear is fixedly connected with a double-end tooth; the driving motor operates to drive the worm to rotate in the connecting seat, the worm drives the worm gear to rotate around the axis in the mounting block, and the worm gear synchronously drives the double-end teeth to rotate. The double-end teeth are meshed with the toothed plate to push the toothed plate to slide along the limiting rod and the inner wall of the fixed ladder, so that relative telescopic adjustment of the fixed ladder and the toothed plate is realized, different length requirements are met, and the applicable scene of the device is expanded.

Description

Technical Field

[0001] This utility model relates to the field of ladder technology, and in particular to a ladder with adjustable telescopic height. Background Technology

[0002] A ladder (also known as a staircase or stair) is a device used for climbing vertically or at an incline, and is widely used in various settings such as construction, industry, homes, and outdoors. The design and use of ladders need to consider safety, convenience, and applicability; therefore, an adjustable, extendable ladder is required.

[0003] According to the description in the patent application website (authorization announcement number: CN 211598467 U) of a climbing ladder, "This utility model relates to the field of power equipment technology, and in particular to a climbing ladder. This utility model discloses a climbing ladder in which the signboard can be firmly fixed to the ladder body, preventing it from easily falling off. It also prevents workers from arbitrarily removing or moving the signboard, ensuring that the signs on the signboard have the proper prohibition and guidance functions, and preventing workers from accidentally climbing the ladder and causing electric shock. Furthermore, the signboard can be flipped up or down and then snapped into place to change the warning message; the operation is very simple and convenient, without needing to replace the entire signboard, saving time and effort."

[0004] Regarding the above description, the applicant believes the following issues exist: The signboard equipped with the ladder employs a reliable fixing structure, ensuring secure installation on the ladder body and exhibiting excellent anti-falling performance. Its unique fixing design effectively prevents workers from arbitrarily removing or moving the signboard due to misoperation or subjective intent, thus ensuring the continuous and accurate effectiveness of the prohibition signs and guidance information on the signboard. This design is crucial for ensuring operational safety, effectively preventing workers from climbing the ladder improperly due to misreading signs or ignoring warnings, thereby eliminating serious safety accidents such as electric shock caused by accidental climbing. In practical applications, the ladder needs to be flexibly adjusted according to specific usage scenarios and different user needs. For example, on work platforms of different heights, or for operators of different heights, the ladder's size adaptability directly affects its ease of use and safety. However, the current ladder device has a fixed overall length design, making it impossible to adjust the length according to actual needs. This fixed length characteristic limits the ladder to specific height ranges and scenarios, greatly restricting its versatility and applicability, and making it difficult to meet diverse operational needs. Utility Model Content

[0005] To overcome the problem of not being able to adjust the device as needed.

[0006] The technical solution of this utility model is as follows: an adjustable telescopic ladder, including an installation block; it also includes a fixed ladder and a fixing component. The fixed ladder is fixedly connected to the bottom of the installation block, the fixing component is provided on the outside of the installation block, a connecting seat is fixedly connected to the outside of the installation block, a motor is fixedly connected to the outside of the connecting seat, a worm gear is fixedly connected to the output end of the motor, the motor is used to drive the worm gear to rotate, a worm wheel is meshed on the outside of the worm gear, a double-headed tooth is fixedly connected to the outside of the worm wheel, a toothed plate is meshed on the outside of the double-headed tooth, a footboard is fixedly connected to the inside of the toothed plate, a limit rod is fixedly connected to the inside of the fixed ladder, a guardrail one is fixedly connected to the outside of the fixed ladder, and a guardrail two is fixedly connected to the outside of the toothed plate.

[0007] Preferably, the fixed ladder has a sliding groove, and the toothed plate is slidably connected to the inside of the fixed ladder through the sliding groove.

[0008] Preferably, the pedal has a through hole, and the toothed plate is slidably connected to the outside of the limiting rod.

[0009] Preferably, a second through hole is provided on the mounting block; the double-headed teeth are rotatably connected inside the mounting block through the second through hole.

[0010] Preferably, the fixing component includes a mounting plate, which is fixedly connected to the outside of the mounting block. A sprocket is rotatably connected inside the mounting plate. A chain is driven to the outside of the sprocket. A sprocket is driven to the end of the chain away from the sprocket. A screw is threaded inside the sprocket. A screw is threaded inside the sprocket. A screw is fixedly connected to the outside of the sprocket.

[0011] Preferably, the mounting plate has a through hole three, and screw one and screw two are slidably connected inside the mounting plate through the through hole three.

[0012] Preferably, when the rotating disc drives sprocket one to rotate, the chain drives sprocket two to rotate synchronously.

[0013] The beneficial effects of this utility model are as follows: The drive motor rotates, causing the worm gear to rotate within the connecting seat. The worm gear drives the worm wheel to rotate around the internal axis of the mounting block, and the worm wheel synchronously drives the double-headed teeth to rotate. The double-headed teeth mesh with the toothed plate, pushing the toothed plate to slide along the limiting rod and the inner wall of the fixed ladder, realizing the relative extension and retraction adjustment between the fixed ladder and the toothed plate, thereby adapting to different length requirements and expanding the applicable scenarios of the device. Attached Figure Description

[0014] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model.

[0015] Figure 2 The diagram shown is a schematic representation of the structure of the adjustment component of this utility model.

[0016] Figure 3The diagram shown is a schematic representation of the driving structure of the adjustment component of this utility model.

[0017] Figure 4 The diagram shown is a schematic representation of the adjustment structure of the adjustment component of this utility model.

[0018] Figure 5 The diagram shown is a partial structural schematic of the adjustment component of this utility model;

[0019] Figure 6 The diagram shown is a schematic representation of the fixing component of this utility model.

[0020] Figure 7 The diagram shown is a structural schematic of the fixing component of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Mounting block; 21. Fixed ladder; 22. Connecting seat; 23. Motor; 24. Worm gear; 25. Worm wheel; 26. Double-headed tooth; 27. Limiting rod; 28. Tooth plate; 29. ​​Step; 210. Guardrail 1; 211. Guardrail 2; 31. Hanging plate; 32. Sprocket 1; 33. Rotating disc; 34. Sprocket 2; 35. Screw 1; 36. Chain; 37. Screw 2. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-7This utility model provides an embodiment of an adjustable telescopic ladder, including a mounting block 1; it also includes a fixed ladder 21 and a fixing assembly. The fixed ladder 21 is fixedly connected to the bottom of the mounting block 1. The fixing assembly is provided on the outside of the mounting block 1. A connecting seat 22 is fixedly connected to the outside of the mounting block 1. A motor 23 is fixedly connected to the outside of the connecting seat 22. A worm gear 24 is fixedly connected to the output end of the motor 23. The motor 23 drives the worm gear 24 to rotate. A worm wheel 25 meshes with the outside of the worm gear 24. A double-headed tooth 26 is fixedly connected to the outside of the worm wheel 25. A toothed plate 28 meshes with the outside of the double-headed tooth 26. A footboard 29 is fixedly connected to the inner side of the toothed plate 28. A limit rod 27 is fixedly connected to the inside of the fixed ladder 21. A guardrail 210 is fixedly connected to the outside of the fixed ladder 21. A guardrail 211 is fixedly connected to the outside of the toothed plate 28. When adjustment is required according to actual use, the motor 23 is driven to... Motor 23 drives worm gear 24 to rotate inside connecting seat 22. Worm gear 24 drives worm wheel 25 to support inside mounting block 1. Worm wheel 25 drives double-headed tooth 26 to support inside mounting block 1, thereby causing double-headed tooth 26 to drive tooth plate 28 to slide inside limit rod 27 and inside fixed ladder 21, thus slowly adjusting the length of fixed ladder 21 and tooth plate 28. Fixed ladder 21 has a sliding groove, and tooth plate 28 is slidably connected to the inside of fixed ladder 21 through the sliding groove. The fixed ladder 21 provides a foundation for the installation of other components. Step 29 has a through hole, and tooth plate 28 is slidably connected to the outside of limit rod 27. Step 29 makes it convenient for users to step on. Mounting block 1 has a through hole. Double-headed tooth 26 is rotatably connected to the inside of mounting block 1 through through hole 2. Double-headed tooth 26 facilitates the sliding of tooth plate 28 inside fixed ladder 21.

[0024] Please see Figure 6-7 In this embodiment, the fixing component includes a mounting plate 31, which is fixedly connected to the outside of the mounting block 1. A sprocket 32 ​​is rotatably connected inside the mounting plate 31. A chain 36 is driven to the outside of the sprocket 32. A second sprocket 34 is driven to the end of the chain 36 away from the first sprocket 32. A screw 35 is threaded inside the first sprocket 32, and a second screw 37 is threaded inside the second sprocket 34. The screw 35 is fixedly connected to the outside of the first sprocket 32. Because the first sprocket is... 32, which facilitates the sliding of screw 35 inside the mounting plate 31; the mounting plate 31 has a through hole 3, through which screw 35 and screw 37 are slidably connected inside the mounting plate 31. The presence of screw 35 facilitates the fixing of the device to the required location with screw 37; when the rotating disk 33 drives sprocket 32 ​​to rotate, the chain 36 drives sprocket 34 to rotate synchronously. The presence of chain 36 facilitates the simultaneous rotation of sprocket 32 ​​and sprocket 34.

[0025] When adjustments are needed based on actual usage, the drive motor 23 rotates the worm gear 24 inside the connecting seat 22. The worm gear 24 drives the worm wheel 25, which is supported inside the mounting block 1. The worm wheel 25 drives the double-headed tooth 26, which is also supported inside the mounting block 1. This causes the double-headed tooth 26 to slide the toothed plate 28 inside the limiting rod 27 and simultaneously inside the fixed ladder 21, thus slowly adjusting the length of the fixed ladder 21 and the toothed plate 28. The device is then erected, and the user climbs onto the device via the step 29 between the fixed ladder 21 and the toothed plate 28. By rotating the rotating disk 33, the user drives the first sprocket 32 ​​to rotate inside the hanging plate 31, which in turn drives the chain 36 to rotate outside the second sprocket 34. The second sprocket 34 rotates synchronously with the first sprocket 32. At this time, the first screw 35 and the second screw 37 slide inside the hanging plate 31 under the drive of the first sprocket 32 ​​and the second sprocket 34, thus fixing the hanging plate 31 in the place of use.

[0026] Through the above steps, the drive motor 23 operates, causing the worm gear 24 to rotate within the connecting seat 22. The worm gear 24 drives the worm wheel 25 to rotate around the internal axis of the mounting block 1, and the worm wheel 25 synchronously drives the double-headed tooth 26 to rotate. The double-headed tooth 26 meshes with the toothed plate 28, pushing the toothed plate 28 to slide along the limiting rod 27 and the inner wall of the fixed ladder 21, realizing the relative extension and retraction adjustment of the fixed ladder 21 and the toothed plate 28, thereby adapting to different length requirements and expanding the applicable scenarios of the device.

Claims

1. A ladder with adjustable telescopic height, comprising a mounting block (1); characterized in that: It also includes a fixed ladder (21) and a fixed component. The fixed ladder (21) is fixedly connected to the bottom of the mounting block (1). The fixed component is set on the outside of the mounting block (1). The connecting seat (22) is fixedly connected to the outside of the mounting block (1). The motor (23) is fixedly connected to the outside of the connecting seat (22). The output end of the motor (23) is fixedly connected to the worm (24). The motor (23) is used to drive the worm (24) to rotate. The worm (24) is meshed with a worm wheel (25). The worm wheel (25) is fixedly connected to the outside of the worm wheel (25). The double-headed tooth (26) is fixedly connected to the outside of the double-headed tooth (26). The toothed plate (28) is meshed with the outside of the double-headed tooth (26). The pedal (29) is fixedly connected to the inside of the toothed plate (28). The fixed ladder (21) is fixedly connected to the inside of the fixed ladder (21). The fixed ladder (21) is fixedly connected to the outside of the fixed ladder (21). The toothed plate (28) is fixedly connected to the outside of the guardrail (211).

2. The adjustable telescopic ladder according to claim 1, characterized in that: The fixed ladder (21) has a sliding groove, and the toothed plate (28) is slidably connected to the inside of the fixed ladder (21) through the sliding groove.

3. The adjustable telescopic ladder according to claim 1, characterized in that: A through hole is provided on the pedal (29), and the toothed plate (28) is slidably connected to the outside of the limiting rod (27).

4. The adjustable telescopic ladder according to claim 1, characterized in that: A through hole 2 is provided on the mounting block (1); the double-headed tooth (26) is rotatably connected to the inside of the mounting block (1) through the through hole 2.

5. The adjustable telescopic ladder according to claim 1, characterized in that: The fixing assembly includes a mounting plate (31), which is fixedly connected to the outside of the mounting block (1). A sprocket (32) is rotatably connected inside the mounting plate (31). A chain (36) is driven to the outside of the sprocket (32). A sprocket (34) is driven to the end of the chain (36) away from the sprocket (32). A screw (35) is threaded inside the sprocket (32). A screw (37) is threaded inside the sprocket (34). A screw (35) is fixedly connected to the outside of the sprocket (32).

6. The adjustable telescopic ladder according to claim 5, characterized in that: The mounting plate (31) has a through hole three, and screw one (35) and screw two (37) are slidably connected inside the mounting plate (31) through the through hole three.

7. The adjustable telescopic ladder according to claim 6, characterized in that: When the rotating disk (33) drives the first sprocket (32) to rotate, the chain (36) drives the second sprocket (34) to rotate synchronously.

Images