CN221053604U - Herringbone ladder with protection function - Google Patents

Abstract

The utility model discloses a herringbone ladder with a protection function, which comprises the following steps: the double ladder is provided with a supporting and expanding structure; the support expansion structure comprises: two pairs of square limiting blocks, two pairs of rotary supporting rods, two pairs of rotary driving shafts, two pairs of locking T-shaped rods, two pairs of locking sleeved discs, two pairs of locking sleeved springs and a lifting supporting assembly; the utility model relates to the technical field of herringbone ladders, which aims to realize the expansion support of the herringbone ladder by supporting an expansion structure, and simultaneously, the whole device is adsorbed and fixed by a lifting support component by a negative pressure adsorption principle, so that the herringbone ladder is improved, and an anti-toppling cross rod and a safety belt tying hanger are additionally arranged, so that the high-altitude falling safety accident of an operator can be avoided, and the occurrence of personal casualty accident can be effectively stopped.

Description

A herringbone ladder with protective function

Technical Field

The utility model relates to the technical field of herringbone ladders, in particular to a herringbone ladder with a protective function.

Background technique

At present, some operations at heights use a herringbone ladder. When the operator stands on the ladder, since the width of the double legs (i.e. the left-right spacing) is much narrower than the front-to-back opening after the ladder is opened, if the ground personnel fail to hold it firmly, it is very easy to cause the ladder to tilt to the left or right, causing an accident where a person falls from a height; furthermore, when the operator stands at the top of the ladder, the operator has no safety guarantee at all, and even if he uses a safety belt, he cannot find a hanging point. When the operator's standing stability deteriorates, it will cause an accident where the person falls from a height. In view of this, an in-depth study was conducted on the above-mentioned problems, resulting in this case.

Utility Model Content

To achieve the above purpose, the utility model is implemented through the following technical solutions: a herringbone ladder with a protective function, comprising: a herringbone ladder, wherein a support extension structure is arranged on the herringbone ladder;

The support extension structure includes: two pairs of circular limit blocks, two pairs of rotating support rods, two pairs of rotating drive shafts, two pairs of locking T-shaped rods, two pairs of locking set discs, two pairs of locking set springs and a lifting support assembly;

The two pairs of the circular limit blocks are installed on the herringbone ladder, the two pairs of the rotating drive shafts are respectively inserted on the herringbone ladder through bearings, the two pairs of the rotating support rods are respectively connected to the two pairs of the rotating drive shafts, and the two pairs of the rotating support rods are respectively movably inserted on the inner sides of the two pairs of the circular limit blocks, the two pairs of the circular limit blocks are respectively provided with convex telescopic grooves, and the two pairs of the convex telescopic grooves are respectively provided with telescopic locking grooves, the two pairs of the locking set discs are respectively movably inserted on the inner sides of the two pairs of the convex telescopic grooves, the two pairs of the locking T-shaped rods are respectively movably inserted on the two pairs of the convex telescopic grooves and the inner sides of the two pairs of the telescopic locking grooves, and the two pairs of the locking T-shaped rods are respectively inserted on the two pairs of the locking set discs, the two pairs of the locking set springs are respectively sleeved on the two pairs of the locking T-shaped rods, and the lifting support assembly is installed on the two pairs of the rotating support rods.

Preferably, the lifting support assembly comprises: a concave limit block, a circular limit block, an inserted limit rod, two pairs of concave negative pressure blocks, two pairs of negative pressure threaded tubes, two pairs of negative pressure threaded rods, two pairs of negative pressure stretching plates, two pairs of negative pressure threaded handles, two pairs of concave circular rubber pads, a plurality of telescopic sliders and a plurality of telescopic slideways;

The concave limit block is installed on the rotating support rod, the annular limit block is installed on the rotating support rod, and the annular limit block is located above the concave limit block, the inserted limit rod is movably inserted into the inner side of the concave limit block and the annular limit block, a pair of the rotating support rods are respectively provided with a pair of annular expansion grooves, a plurality of the expansion slides are respectively installed on the inner sides of the two pairs of the annular expansion grooves, a plurality of the expansion slides are respectively installed on the two pairs of the concave negative pressure blocks, and a plurality of the expansion slides are respectively movably Inserted on the inner side of several of the telescopic slides, the two pairs of the negative pressure threaded tubes are respectively inserted on the two pairs of the rotating support rods through bearings, the two pairs of the negative pressure threaded rods are respectively movably inserted on the inner sides of the two pairs of the negative pressure threaded tubes, the cable-mentioned negative pressure stretching plates are respectively movably inserted on the inner sides of the two pairs of the concave negative pressure blocks, and the two pairs of the negative pressure stretching plates are respectively connected to the two pairs of the negative pressure threaded rods, the two pairs of the negative pressure threaded handles are respectively installed on the two pairs of the negative pressure threaded rods, and the two pairs of the concave annular rubber pads are respectively mounted on the two pairs of the concave negative pressure blocks.

Preferably, a ladder-shaped rubber block is provided on the stepladder, and a safety belt lanyard is provided on the inserted limiting rod.

Preferably, threaded holes are respectively provided on the concave limiting block and the annular limiting block, and a pair of the threaded holes are respectively provided with T-shaped threaded rods.

Preferably, the concave limiting block and the annular limiting block are respectively provided with annular rubber strips.

Preferably, arc rubber strips are respectively provided on a pair of the T-shaped threaded rods, two pairs of limiting arc blocks are provided on the stepladder, and a pair of anti-dumping rods are provided on the inner sides of the two pairs of limiting arc blocks.

Beneficial Effects

The utility model provides a herringbone ladder with a protective function. It has the following beneficial effects: the herringbone ladder with a protective function achieves the expansion support of the herringbone ladder through the support extension structure, and at the same time, through the negative pressure adsorption principle, the entire device is adsorbed and fixed through the lifting support component, the herringbone ladder is improved, and an anti-dumping cross bar and a safety belt are added to avoid high-altitude falling safety accidents of operators, and can effectively prevent the occurrence of personal injury accidents.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic partial cross-sectional view of a front view of a herringbone ladder with a protective function according to the present invention.

FIG2 is a schematic front cross-sectional view of a herringbone ladder with a protective function according to the present invention.

FIG3 is a side cross-sectional schematic diagram of a herringbone ladder with a protective function according to the present invention.

In the figure: 1. stepladder; 2. circular limit block; 3. rotating support rod; 4. rotating drive shaft; 5. locking T-bar; 6. locking set disc; 7. locking set spring; 8. concave limit block; 9. circular ring limit block; 10. plug-in limit rod; 11. concave negative pressure block; 12. negative pressure threaded pipe; 13. negative pressure threaded rod; 14. negative pressure stretching plate; 15. negative pressure threaded handle; 16. concave circular ring rubber pad; 17. telescopic slider; 18. telescopic slide.

Detailed ways

Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control.

Example:

As shown in Fig. 1-3, the herringbone ladder 1 is provided with a support extension structure;

Specifically, the support extension structure includes: two pairs of circular limit blocks 2, two pairs of rotating support rods 3, two pairs of rotating drive shafts 4, two pairs of locking T-shaped rods 5, two pairs of locking set discs 6, two pairs of locking set springs 7 and a lifting support assembly;

Specifically, the two pairs of the circular limit blocks 2 are installed on the herringbone ladder 1, the two pairs of the rotating drive shafts 4 are respectively inserted on the herringbone ladder 1 through bearings, the two pairs of the rotating support rods 3 are respectively connected to the two pairs of the rotating drive shafts 4, and the two pairs of the rotating support rods 3 are respectively movably inserted on the inner sides of the two pairs of the circular limit blocks 2, the two pairs of the circular limit blocks 2 are respectively provided with convex telescopic grooves, and the two pairs of the convex telescopic grooves are respectively provided with telescopic locking grooves, the two pairs of the locking set discs 6 are respectively movably inserted on the inner sides of the two pairs of the convex telescopic grooves, the two pairs of the locking T-shaped rods 5 are respectively movably inserted on the two pairs of the convex telescopic grooves and the inner sides of the two pairs of the telescopic locking grooves, and the two pairs of the locking T-shaped rods 5 are respectively inserted on the two pairs of the locking set discs 6, the two pairs of the locking set springs 7 are respectively sleeved on the two pairs of the locking T-shaped rods 5, and the lifting support assembly is installed on the two pairs of the rotating support rods 3.

It should be noted that, in the above, the two pairs of rotating support rods 3 are rotated along the rotating drive shaft 4 respectively, so that the two pairs of rotating support rods 3 are movably inserted into the inner sides of the two pairs of circular limit blocks 2 respectively, and the two pairs of locking T-shaped rods 5 are stretched, and the locking set discs 6 thereon are driven respectively by the two pairs of locking T-shaped rods 5, and the two pairs of locking set rings are squeezed and contracted by the two pairs of locking set springs 7 respectively, so that the locking T-shaped rods 5 are contracted, so as to facilitate the rotating support rods 3 to be movably inserted into the inner sides of the circular limit blocks 2, and the two pairs of locking T-shaped rods 5 are loosened, so that the locking set springs 7 drive the locking set discs 6 thereon, and the locking set discs 6 drive the locking T-shaped rods 5 thereon, so that the locking T-shaped rods 5 are movably inserted into the rotating support rods 3, so as to achieve the expansion support of the herringbone ladder 1.

As shown in Fig. 1-3, the lifting support assembly includes: a concave limit block 8, a circular limit block 9, an inserted limit rod 10, two pairs of concave negative pressure blocks 11, two pairs of negative pressure threaded tubes 12, two pairs of negative pressure threaded rods 13, two pairs of negative pressure stretching plates 14, two pairs of negative pressure threaded handles 15, two pairs of concave circular rubber pads 16, a plurality of telescopic sliders 17 and a plurality of telescopic slideways 18;

Specifically, the concave limit block 8 is installed on the rotating support rod 3, the annular limit block 9 is installed on the rotating support rod 3, and the annular limit block 9 is located above the concave limit block 8, the inserted limit rod 10 is movably inserted into the inner side of the concave limit block 8 and the annular limit block 9, a pair of the rotating support rods 3 are respectively provided with a pair of annular telescopic grooves, a plurality of the telescopic slides 18 are respectively installed on the inner sides of the two pairs of the annular telescopic grooves, a plurality of the telescopic sliders 17 are respectively installed on the two pairs of the concave negative pressure blocks 11, and a plurality of the telescopic sliders 17 are respectively movably inserted into the inner sides of the concave limit blocks 8 and the annular limit blocks 9. Installed on the inner side of several telescopic slides 18, the two pairs of negative pressure threaded tubes 12 are respectively inserted on the two pairs of rotating support rods 3 through bearings, the two pairs of negative pressure threaded rods 13 are respectively movably inserted on the inner sides of the two pairs of negative pressure threaded tubes 12, the cable-mentioned negative pressure stretching plates 14 are respectively movably inserted on the inner sides of the two pairs of concave negative pressure blocks 11, and the two pairs of negative pressure stretching plates 14 are respectively connected to the two pairs of negative pressure threaded rods 13, the two pairs of negative pressure threaded handles 15 are respectively installed on the two pairs of negative pressure threaded rods 13, and the two pairs of concave annular rubber pads 16 are respectively mounted on the two pairs of concave negative pressure blocks 11.

It should be noted that, in the above, the inserted limit rod 10 is movably inserted into the inner side of the circular limit block 9 and the concave limit block 8, so as to support the inserted limit rod 10. Since the herringbone ladder 1 is in an open state when in use, the front and rear span of the ground support legs is very large, but the width of the front and rear double legs (i.e., the left and right distance) is much narrower, it is very easy to cause the herringbone ladder 1 to tilt to the left or right during use. In view of this defect, two pairs of rotating support rods 3 can be used to avoid safety accidents of operators falling from heights, and personal injury accidents can be effectively prevented. At the same time, by squeezing the two pairs of concave negative pressure blocks 11 to a fixed wall, etc., the two pairs of negative pressure threaded handles 15 are rotated, which drives the negative pressure threaded handles 15 to drive the negative pressure threaded rod 13 thereon to rotate, so that the negative pressure threaded rod 13 is extended and retracted along the inner side of the negative pressure threaded tube 12, and the negative pressure stretching plate 14 thereon is driven by the negative pressure threaded rod 13. The negative pressure stretching plate 14 is extended and retracted on the inner side of the concave negative pressure block 11, thereby changing the pressure on the inner side of the concave negative pressure block 11, and the concave negative pressure block 11 is negatively fixed through the concave annular rubber pad 16.

As a preferred solution, further, the stepladder 1 is provided with a ladder-shaped rubber block, and the inserted limit rod 10 is provided with a safety belt lanyard.

As a preferred solution, further, threaded holes are respectively provided on the concave limit block 8 and the annular limit block 9, and a pair of the threaded holes are respectively provided with T-shaped threaded rods.

As a preferred solution, further, the concave limit block 8 and the annular limit block 9 are respectively provided with annular rubber strips.

As a preferred solution, further, arc rubber strips are respectively provided on a pair of the T-shaped threaded rods, two pairs of limiting arc blocks are provided on the herringbone ladder 1, and a pair of anti-dumping rods are provided on the inner sides of the two pairs of limiting arc blocks.

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

Claims (6)

1. A herringbone ladder with a protective function, comprising: the double ladder is characterized in that a supporting and expanding structure is arranged on the double ladder;

The support expansion structure comprises: two pairs of square limiting blocks, two pairs of rotary supporting rods, two pairs of rotary driving shafts, two pairs of locking T-shaped rods, two pairs of locking sleeved discs, two pairs of locking sleeved springs and a lifting supporting assembly;

The two pairs of the square limiting blocks are installed on the double ladder, the two pairs of the rotary driving shafts are respectively inserted into the double ladder through bearings, the two pairs of the rotary supporting rods are respectively connected to the two pairs of the rotary driving shafts, the two pairs of the rotary supporting rods are respectively movably inserted into the two pairs of the inner sides of the square limiting blocks, the two pairs of the square limiting blocks are respectively provided with a convex telescopic slot, the two pairs of the convex telescopic slots are respectively provided with a telescopic locking slot, the two pairs of locking sleeved discs are respectively movably inserted into the two pairs of the inner sides of the convex telescopic slots, the two pairs of the locking T-shaped rods are respectively movably inserted into the two pairs of the convex telescopic slots and the two pairs of the inner sides of the telescopic locking slots, the two pairs of the locking T-shaped rods are respectively inserted into the two pairs of the locking sleeved discs, and the two pairs of locking sleeved springs are respectively sleeved on the two pairs of the locking T-shaped rods, and the lifting supporting components are installed on the two pairs of the rotary supporting rods.

2. The herringbone ladder with protection function of claim 1, wherein the lifting support assembly comprises: the device comprises a concave limiting block, a circular limiting block, an inserted limiting rod, two pairs of concave negative pressure blocks, two pairs of negative pressure threaded pipes, two pairs of negative pressure threaded rods, two pairs of negative pressure stretching plates, two pairs of negative pressure threaded handles, two pairs of concave circular rubber mats, a plurality of telescopic sliding blocks and a plurality of telescopic sliding ways;

The concave limiting block is installed on the rotary supporting rod, the circular limiting block is located above the concave limiting block, the inserting limiting rod is movably inserted into the concave limiting block and the inner side of the circular limiting block, a pair of circular telescopic grooves are respectively formed in the rotary supporting rod, a plurality of telescopic sliding ways are respectively installed on the inner sides of the circular telescopic grooves, a plurality of telescopic sliding blocks are respectively installed on the two pairs of concave negative pressure blocks, a plurality of telescopic sliding blocks are respectively movably inserted into the plurality of telescopic sliding ways, the two pairs of negative pressure threaded pipes are respectively inserted into the two pairs of rotary supporting rods through bearings, the two pairs of negative pressure threaded rods are respectively movably inserted into the two pairs of negative pressure threaded pipes, the negative pressure stretching plates are respectively movably inserted into the inner sides of the two pairs of concave negative pressure blocks, the two pairs of negative pressure stretching plates are respectively connected to the two pairs of negative pressure threaded rods, and the two pairs of negative pressure stretching plates are respectively installed on the two pairs of concave threaded rods and the two pairs of negative pressure threaded rods are respectively sleeved on the two pairs of concave threaded rods.

3. The herringbone ladder with the protection function according to claim 2, wherein a trapezoidal rubber block is arranged on the herringbone ladder, and a safety belt tying rope is arranged on the plug-in limiting rod.

4. The herringbone ladder with the protection function according to claim 2, wherein threaded holes are formed in the concave limiting block and the circular limiting block respectively, and T-shaped threaded rods are arranged in a pair of threaded holes respectively.

5. The herringbone ladder with the protection function according to claim 2, wherein annular rubber strips are respectively arranged on the concave limiting block and the annular limiting block.

6. The herringbone ladder with the protection function according to claim 4, wherein a pair of arc rubber strips are respectively arranged on the T-shaped threaded rods, two pairs of limiting arc blocks are arranged on the herringbone ladder, and a pair of anti-toppling rods are arranged on the inner sides of the two pairs of limiting arc blocks.