CN111236826A

CN111236826A - Safe intelligent extension ladder convenient to promote heavy object

Info

Publication number: CN111236826A
Application number: CN202010066074.0A
Authority: CN
Inventors: 胡林有
Original assignee: Yongkang Dongxu Elevator Co Ltd
Current assignee: Yongkang Dongxu Elevator Co Ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-06-05

Abstract

The invention discloses a safe and intelligent extension ladder convenient for lifting heavy objects, which comprises an extension ladder body and a U-shaped frame, wherein two ends of the U-shaped frame are respectively provided with a hoop matched with the extension ladder body, a bearing is embedded in the U-shaped frame, a rotating shaft is connected in an inner ring of the bearing in an interference manner, a lifting rope is wound outside the rotating shaft, a movable pulley is sleeved outside the lifting rope, a lifting basket is hung at the bottom of the movable pulley, one end of the lifting rope is tied to a fixed pulley, and the upper end of the fixed pulley is installed at the bottom of the U-shaped frame. Fix the U type frame in the upper end of extension ladder body through the staple bolt, loosen the lifting rope earlier, reserve out the height that promotes, after extension ladder body, put into the hand-basket to the instrument, the people climbs on the ladder then rotates the pivot and carries out the rolling lifting rope to promote the instrument in the hand-basket, the instrument of being convenient for takes, improves the security.

Description

Safe intelligent extension ladder convenient to promote heavy object

Technical Field

The invention relates to the technical field of extension ladders, in particular to a safe and intelligent extension ladder convenient for lifting heavy objects.

Background

The ladder has the advantages of ultra-light weight, ultra-short height, ultra-strong safety, humanized design and attractive and elegant appearance, so that the product is popular all over the world, is an ideal ladder for high-rise operation in departments of families, hotels, markets, enterprises, power telecommunication, urban construction, public security fire fighting, heat supply and air supply, gardens and the like, and is also a necessary climbing ladder for field operation of various vehicles such as emergency vehicles, line patrol vehicles, command vehicles and the like.

When in actual use, construction tool can be used usually, like large-scale tools such as electric drill, hammer, when the instrument of taking hold climbs the ladder, can bring certain danger, current extension ladder is not convenient for carry out lifting means, brings inconvenience for the construction, and current ladder does not have bearing early warning device, and when the bearing exceeds standard, the user can't learn, causes the occurence of failure easily.

Disclosure of Invention

The invention aims to provide a safe and intelligent extension ladder convenient for lifting heavy objects, and aims to solve the problems that the extension ladder in the background technology is inconvenient for lifting tools, and the existing ladder is not provided with a load-bearing early warning device, so that a user cannot know when the load-bearing exceeds the standard, and accidents are easily caused.

In order to achieve the purpose, the invention provides the following technical scheme: a safe and intelligent extension ladder convenient for lifting heavy objects comprises an extension ladder body and a U-shaped frame, wherein two ends of the U-shaped frame are respectively provided with a hoop matched with the extension ladder body, a bearing is embedded in the U-shaped frame, a rotating shaft is connected in an inner ring of the bearing in an interference manner, a lifting rope is wound outside the rotating shaft, a movable pulley is sleeved outside the lifting rope, a lifting basket is hung at the bottom of the movable pulley, one end of the lifting rope is tied with a fixed pulley, and the upper end of the fixed pulley is installed at the bottom of the U-shaped frame;

the inboard welding of U type frame has the cylinder body, the inside activity of cylinder body is pegged graft and is had the movable rod, the outside fixedly connected with limiting plate of movable rod, the top of limiting plate is equipped with the spring, the spring cup joints in the outside of movable rod, the lower extreme welding of movable rod has the ratchet, the tip key joint of pivot have with ratchet assorted ratchet, still including setting up the gravity sensor on extension ladder body bottom, gravity sensor is connected with the controller, still includes power supply and the siren of being connected with the controller.

Preferably, the alarm is a buzzer or a warning lamp.

Preferably, the upper end of the movable rod is fixedly connected with a pull ring.

Preferably, the inner side of the cylinder body is provided with a limiting groove, and the limiting plate is fixedly connected with a limiting block matched with the limiting groove.

Preferably, a hand wheel is installed at the end part of the rotating shaft, and a rubber sleeve is sleeved outside the hand wheel.

Preferably, the outer part of the rotating shaft is sleeved with two groups of baffles.

Preferably, a rubber pad is bonded on the inner side of the hoop, and anti-skid grains are arranged on the surface of the rubber pad.

Compared with the prior art, the invention has the beneficial effects that:

the tool lifting device mainly comprises a telescopic ladder body, a U-shaped frame, a rotating shaft, a lifting rope, a lifting basket and other parts, wherein the U-shaped frame is fixed at the upper end of the telescopic ladder body through a hoop according to actual use requirements; the movable pulleys and the fixed pulleys are arranged on the lifting rope, so that the lifting of articles is more labor-saving; when the rotating shaft is rotated, the spring in the cylinder body extrudes the ratchet to be clamped on the ratchet at the end part of the rotating shaft, so that the rotating shaft can be prevented from loosening, the safety is improved, the alarm is arranged, a user can be reminded that the ladder exceeds the bearing, and accidents are prevented.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of a U-shaped frame according to the present invention;

fig. 3 is a schematic sectional structure view of the cylinder body of the present invention.

In the figure: 1. a telescopic ladder body; 2. a U-shaped frame; 3. hooping; 4. a bearing; 5. a rotating shaft; 6. lifting a rope; 7. a movable pulley; 8. a fixed pulley; 9. lifting a basket; 10. a cylinder body; 11. a movable rod; 12. a limiting plate; 13. a spring; 14. a ratchet; 15. a ratchet wheel; 16. a pull ring; 17. a limiting groove; 18. a limiting block; 19. a hand wheel; 20. a rubber sleeve; 21. a baffle plate; 22. and (7) a rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: a safe and intelligent extension ladder convenient for lifting heavy objects comprises an extension ladder body 1 and a U-shaped frame 2, wherein hoops 3 matched with the extension ladder body 1 are installed at two ends of the U-shaped frame 2, rubber pads 22 are bonded on the inner sides of the hoops 3, anti-skid lines are arranged on the surfaces of the rubber pads 22, the rubber pads 22 can prevent the hoops 3 from damaging the ladder, meanwhile, the friction force between the hoops 3 and the ladder is improved, a bearing 4 is embedded in the U-shaped frame 2, a rotating shaft 5 is connected in an inner ring of the bearing 4 in an interference mode, a lifting rope 6 is wound outside the rotating shaft 5, a movable pulley 7 is sleeved outside the lifting rope 6, a lifting basket 9 is hung at the bottom of the movable pulley 7, a fixed pulley 8 is tied at one end of the lifting rope 6, the upper end of the fixed pulley 8 is installed at the bottom of the U-shaped frame 2, the movable pulley 7 and the fixed pulley 8 are arranged on the lifting rope 6, so that objects can be lifted more, the telescopic ladder further comprises a gravity sensor arranged on the bottom end of the telescopic ladder body, a power supply and an alarm, wherein the gravity sensor is connected with a controller, the power supply and the alarm are connected with the controller, and the alarm is a buzzer or a warning lamp;

the welding of the inboard of U type frame 2 has cylinder body 10, the inside activity of cylinder body 10 is pegged graft and is had movable rod 11, the outside fixedly connected with limiting plate 12 of movable rod 11, the top of limiting plate 12 is equipped with spring 13, spring 13 cup joints in the outside of movable rod 11, the welding of the lower extreme of movable rod 11 has ratchet 14, the tip key joint of pivot 5 has ratchet 15 with ratchet 14 assorted. A pull ring 16 is fixedly connected to the upper end of the movable rod 11, and when the basket 9 is put down, the ratchet 14 and the ratchet wheel 15 are pulled to be separated through the pull ring 16; a limiting groove 17 is formed in the inner side of the cylinder body 10, a limiting block 18 matched with the limiting groove 17 is fixedly connected to the outer portion of the limiting plate 12, and the limiting block 18 is matched with the limiting groove 17, so that the limiting of the angle of the ratchet 14 is facilitated;

hand wheel 19 is installed to the tip of pivot 5, is convenient for rotate pivot 5 and carries rope 6 in the rolling, rubber sleeve 20 has been cup jointed to the outside of hand wheel 19, is favorable to improving the travelling comfort of hand two sets of baffles 21 have been cup jointed to the outside of pivot 5, are favorable to blocking rope 6.

The working principle is as follows: according to the needs of in-service use, fix U type frame 2 in the upper end of extension ladder body 1 through staple bolt 3, loosen the lifting rope earlier, reserve the height that promotes, after 1 extension with extension ladder body, put into hand-basket 9 to the instrument, the people climbs on the ladder then rotates pivot 5 and carries out rolling lifting rope 6, thereby promote the instrument in the hand-basket 9, be convenient for taking of instrument, the security is improved, when rotating

pivot

5, 14 cards of spring 13 extrusion ratchet in the cylinder body 10 are on the ratchet 15 of 5 tip of pivot, can prevent that pivot 5 is not hard up, the security is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a safe intelligent extension ladder convenient to promote heavy object, includes extension ladder body and U type frame, its characterized in that: hoops matched with the extension ladder body are mounted at two ends of the U-shaped frame, a bearing is embedded in the U-shaped frame, a rotating shaft is connected in an inner ring of the bearing in an interference mode, a lifting rope is wound outside the rotating shaft, a movable pulley is sleeved outside the lifting rope, a lifting basket is hung at the bottom of the movable pulley, a fixed pulley is tied at one end of the lifting rope, and the upper end of the fixed pulley is mounted at the bottom of the U-shaped frame;

2. The safe and intelligent extension ladder convenient for lifting heavy objects of claim 1, wherein: the alarm is a buzzer or a warning lamp.

3. The safe and intelligent extension ladder convenient for lifting heavy objects of claim 1, wherein: the upper end of the movable rod is fixedly connected with a pull ring.

4. The safe and intelligent extension ladder convenient for lifting heavy objects of claim 1, wherein: the limiting groove is formed in the inner side of the cylinder body, and the limiting block matched with the limiting groove is fixedly connected to the outer portion of the limiting plate.

5. The safe and intelligent extension ladder convenient for lifting heavy objects of claim 1, wherein: the end of the rotating shaft is provided with a hand wheel, and the outside of the hand wheel is sleeved with a rubber sleeve.

6. The safe and intelligent extension ladder convenient for lifting heavy objects of claim 1, wherein: the outside of pivot has cup jointed the baffle, the baffle is provided with two sets ofly.

7. The safe and intelligent extension ladder convenient for lifting heavy objects of claim 1, wherein: the rubber pad is bonded to the inner side of the hoop, and anti-skid grains are arranged on the surface of the rubber pad.