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CN-224214112-U - Cat ladder of adjustable flexible height

CN224214112UCN 224214112 UCN224214112 UCN 224214112UCN-224214112-U

Abstract

The utility model relates to the technical field of ladders, in particular to a ladder with adjustable telescopic height, which comprises a mounting block, a fixed ladder and a fixed assembly, wherein the bottom of the mounting block is fixedly connected with the fixed ladder, the fixed assembly is arranged outside the mounting block, a connecting seat is fixedly connected outside the mounting block, a motor is fixedly connected outside the connecting seat, the output end of the motor is fixedly connected with a worm, the motor is used for driving the worm to rotate, a worm wheel is meshed outside the worm, a double-head tooth is fixedly connected outside the worm wheel, and the utility model drives the worm to rotate in the connecting seat through driving the motor to drive the worm to rotate around the inner axis of the mounting block, and the worm wheel synchronously drives the double-head tooth to rotate. Double-end tooth and pinion rack meshing promote the pinion rack along gag lever post and fixed ladder inner wall slip, realize fixed ladder and the relative flexible regulation of pinion rack to the different length demands of adaptation, the suitable scene of expanding device.

Inventors

  • ZHOU JIANFEI
  • ZHANG JIAQI

Assignees

  • 天津同力远航机械设备有限公司

Dates

Publication Date
20260508
Application Date
20250430

Claims (7)

  1. 1. The ladder stand with the adjustable telescopic height comprises a mounting block (1) and is characterized by further comprising a fixing ladder (21) and a fixing assembly, wherein the bottom of the mounting block (1) is fixedly connected with the fixing ladder (21), the fixing assembly is arranged outside 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 (24) is fixedly connected to the output end of the motor (23), the motor (23) is used for driving the worm (24) to rotate, a worm wheel (25) is meshed to the outside of the worm wheel (24), double-end teeth (26) are fixedly connected to the outside of the worm wheel (25), a toothed plate (28) is meshed to the outside of the double-end teeth (26), a pedal (29) is fixedly connected to the inner side of the toothed plate (28), a limiting rod (27) is fixedly connected to the inside of the fixing ladder (21), a first protective fence (210) is fixedly connected to the outside of the toothed plate (28), and a second protective fence (211) is fixedly connected to the outside of the toothed plate (28).
  2. 2. The crawling ladder with adjustable telescopic height according to claim 1, wherein the fixed ladder (21) is provided with a sliding groove, and the toothed plate (28) is slidably connected inside the fixed ladder (21) through the sliding groove.
  3. 3. The ladder stand with adjustable telescopic height according to claim 1, wherein the pedal (29) is provided with a first through hole, and the toothed plate (28) is connected to the outside of the limit rod (27) in a sliding manner.
  4. 4. The ladder stand with adjustable telescopic height according to claim 1 is characterized in that a second through hole is formed in the mounting block (1), and the double-head teeth (26) are connected inside the mounting block (1) in a rotating mode through the second through hole.
  5. 5. The ladder stand with adjustable telescopic height according to claim 1, wherein the fixing component comprises a hanging plate (31), the hanging plate (31) is fixedly connected to the outside of the installation block (1), a first sprocket wheel (32) is rotatably connected to the inside of the hanging plate (31), a chain (36) is connected to the outside of the first sprocket wheel (32), a second sprocket wheel (34) is connected to one end, far away from the first sprocket wheel (32), of the chain (36), a first screw rod (35) is connected to the inner thread of the first sprocket wheel (32), a second screw rod (37) is connected to the inner thread of the second sprocket wheel (34), and a first screw rod (35) is fixedly connected to the outside of the first sprocket wheel (32).
  6. 6. The ladder stand with adjustable telescopic height according to claim 5, wherein the hanging plate (31) is provided with a through hole III, and the first screw rod (35) and the second screw rod (37) are connected inside the hanging plate (31) in a sliding mode through the through hole III.
  7. 7. A ladder having an adjustable telescopic height as set forth in claim 6, wherein the chain (36) drives the sprocket two (34) to rotate synchronously when the sprocket one (32) is rotated by the rotating plate (33).

Description

Cat ladder of adjustable flexible height Technical Field The utility model relates to the technical field of ladders, in particular to a ladder with adjustable telescopic height. Background A cat ladder (also called a stair or a ladder) is a device for climbing in a vertical or inclined direction, and is widely used in various scenes such as buildings, industry, home, and outdoors. The design and use of the ladder should be considered for safety, convenience and applicability, and thus a ladder with adjustable telescopic height is required. The utility model discloses a cat ladder (the authorized bulletin number is CN 211598467U) according to the patent network, and relates to the technical field of power equipment, in particular to a cat ladder. The utility model discloses a crawling ladder, wherein a marking plate in the crawling ladder can be firmly fixed on a crawling ladder body, is not easy to fall off, can also prevent a worker from randomly taking off or moving the marking plate, ensures that the marking plate on the marking plate has due prohibition and prompt guiding functions, and prevents the worker from mistakenly climbing the crawling ladder to cause personal electric shock. In addition, the sign board can be turned upwards or downwards, and then the warning sign can be replaced after being clamped, so that the operation is very simple and convenient, the whole sign board is not required to be replaced, and the time and the 'are saved' In view of the above, the applicant believes that there is a problem in that the marking plate provided with the ladder is of a reliable fixing structure, can be stably mounted on the ladder body, and has excellent anti-falling performance. The unique fixed design of the automatic marking device effectively prevents staff from randomly taking off or moving the marking plate due to misoperation or subjective intention, thereby ensuring that forbidden marks and prompt guide information arranged on the marking plate can continuously and accurately play a role. This design is crucial to guarantee operation safety, can effectively avoid the staff to climb the ladder violating regulations because of misread marks or neglect the warning, and then stop the personal electric shock etc. serious incident that causes because of the mistake climbing ladder, in practical application, the cat ladder need carry out nimble regulation according to specific service scenario and user's different demands. For example, on work platforms of different heights, or for operators of different heights, the suitability of the size of the ladder directly influences the convenience and safety of use. However, the overall length of the ladder stand device is currently designed to be fixed, and cannot be adjusted according to actual requirements. The characteristic of the fixed length makes the cat ladder only suitable for specific height range and specific scene, greatly limits its commonality and application scope, is difficult to satisfy diversified operation demand. Disclosure of utility model In order to overcome the problem that the device cannot be adjusted according to the need. The technical scheme includes that the telescopic height-adjustable crawling ladder comprises a mounting block, a fixing ladder and a fixing assembly, wherein 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, a worm wheel is meshed to the outside of the worm wheel, double-head teeth are fixedly connected to the outside of the worm wheel, a toothed plate is meshed to the outside of the double-head teeth, a pedal is fixedly connected to the inner side of the toothed plate, a limiting rod is fixedly connected to the inside of the fixing ladder, a protective rail I is fixedly connected to the outside of the fixing ladder, and a protective rail II is fixedly connected to the outside of the toothed plate. Preferably, the fixed ladder is provided with a sliding groove, and the toothed plate is connected inside the fixed ladder in a sliding way through the sliding groove. Preferably, the pedal is provided with a first through hole, and the toothed plate is connected to the outside of the limiting rod in a sliding manner. Preferably, the mounting block is provided with a second through hole, and the double-head teeth are rotationally connected in the mounting block through the second through hole. Preferably, the fixing component comprises a hanging plate, the hanging plate is fixedly connected to the outside of the mounting block, a sprocket I is rotatably connected to the inside of the hanging plate, a chain is connected to the outside of the sprocket I in a transmission mode, a sproc