CN220267568U

CN220267568U - Manhole ladder fixing device

Info

Publication number: CN220267568U
Application number: CN202320886096.0U
Authority: CN
Inventors: 黎军海; 关玉; 周伍; 王庆书; 吴定平
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-12-29
Anticipated expiration: 2033-04-19

Abstract

The utility model provides a manhole ladder fixing device, wherein the cross section of a cross rod is of an L-shaped structure, a plurality of waist-shaped holes are formed in two perpendicular planes of the L-shaped structure, at least two buckling claws are arranged on the cross rod, the buckling claws are of a U-shaped structure, a sliding buckle of the U-shaped structure is arranged at the closed end of each buckling claw and is used for being hung on a cross rod plate body, a second bolt is arranged at the open end of each buckling claw, a climbing ladder is arranged in each buckling claw and limited by the corresponding second bolt, and a climbing rod of the climbing ladder abuts against the upper end face of each buckling claw. The device is simple in manufacture, convenient to install, has various combination modes, is suitable for manhole with various sizes and various arrangement modes, has wide adaptability to the width, the form and the like of a ladder, and is safe and reliable in fixed form.

Description

Manhole ladder fixing device

Technical Field

The utility model relates to the field of overhauling, in particular to a manhole ladder fixing device.

Background

The cable shaft, the flow channel of the hydropower station unit, the pressure steel pipe and the like are generally provided with a door, and the door cover and the door seat are generally connected and fastened through a circle of bolts and nuts. On the premise of having the door opening condition, before entering the interior for inspection or maintenance, the connecting bolt and the nut are required to be removed, the entrance door is opened, and after the ladder is arranged at the entrance hole, people can enter the entrance door to develop related work.

At present, ladder beams at two sides of a manhole ladder are generally leaned against the edge of a door seat, the contact part is only in a point contact state, when a person gets on or off the ladder, the ladder is easy to slide and fall back due to the deviation of the gravity center, so that workers are often injured due to sliding, and great hidden danger exists. Although the ladder and the adjacent door seat bolt holes can be bound and fixed by the ropes, the ladder and the door seat are in a point contact state, so that the personnel still easily slide when getting on or off the ladder, and the ladder is not firm enough.

Disclosure of Invention

The utility model mainly aims to provide a manhole ladder fixing device which solves the problems that a ladder and a door seat are in a point contact state, a person still easily slides when getting on or off the ladder, and the fixing device is not firm enough.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a manhole ladder fixing device, horizontal pole cross-section is L shape structure, all is equipped with a plurality of waist shape holes on two perpendicular faces of L shape structure, is equipped with two at least knot claws on the horizontal pole, detains claw and becomes U-shaped structure, detains claw blind end and is equipped with the slide fastener of U-shaped structure, and the slide fastener is used for hanging on the horizontal pole plate body, detains claw open end and is equipped with the second bolt, and the cat ladder setting is inside detaining the claw to it is spacing through the second bolt, and the pole climbing of cat ladder supports and leans on detaining claw up end.

In the preferred scheme, the lower part of the buckle claw is also provided with a closed reinforcing plate, and the lower end opening of the slide buckle faces the direction of the reinforcing plate.

In the preferred scheme, the closed end of the buckling claw is provided with a through hole, and the first bolt passes through the through hole and the kidney-shaped hole to be fixed on the cross rod.

In the preferred scheme, the inner side surface of the buckling claw is provided with a plurality of friction rubbers.

In the preferred scheme, the two ends of the cross rod are fixed on the manhole flange plate through third bolts, and the third bolts penetrate through the kidney-shaped holes to be in threaded connection with the manhole flange plate.

In the preferred scheme, the inner side surface of the slide fastener is provided with a rubber pad.

The utility model provides a manhole ladder fixing device which is simple to manufacture and convenient to install. The device has a plurality of combination modes, and is suitable for the manhole with various sizes and different arrangement modes of horizontal, vertical and inclined. The adaptability to the width, the form and the like of the ladder is wide. The ladder can be suitable for ladders with different widths, and can be suitable for ladders with different forms such as straight ladders, folding ladders, telescopic ladders and the like. The working strength of workers is reduced.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a general mounting block diagram of the present utility model;

FIG. 2 is a general external view of the ladder securement device of the present utility model;

FIG. 3 is a view showing the construction of the upper side latch of the present utility model;

FIG. 4 is a view showing the construction of the lower side latch of the present utility model;

fig. 5 is a block diagram of a preferred embodiment of the present utility model.

In the figure: a manhole flange plate 1; a ladder stand 2; a climbing pole 201; a cross bar 3; kidney-shaped aperture 301; a latch 4; a slider 401; a reinforcing plate 402; a first bolt 5; a second bolt 6; friction rubber 7; and a third bolt 8.

Detailed Description

As shown in fig. 1-5, in a manhole ladder fixing device, a cross rod 3 has an L-shaped cross section, a plurality of kidney-shaped holes 301 are formed in two vertical planes of the L-shaped cross section, at least two buckling claws 4 are arranged on the cross rod 3, the buckling claws 4 are in a U-shaped structure, a slide buckle 401 of the U-shaped structure is arranged at the closed end of the buckling claws 4, the slide buckle 401 is used for being hung on a plate body of the cross rod 3, a second bolt 6 is arranged at the open end of the buckling claws 4, a crawling ladder 2 is arranged inside the buckling claws 4 and limited by the second bolt 6, and a crawling rod 201 of the crawling ladder 2 abuts against the upper end face of the buckling claws 4. The slide fastener 401 of the fastening claw 4 is fastened on the cross bar 3, and the bolt is locked. The crawling ladder 2 is installed inside the buckling claw 4, the second bolt 6 is installed again to limit, and the crawling rod 201 of the crawling ladder 2 abuts against the upper end face of the buckling claw 4. Therefore, the purpose of fixing the ladder is achieved, in addition, one surface of the ladder beam leans against the cross rod or the slide fastener to form line contact, so that the ladder fixing effect is better.

In a preferred scheme, a closed reinforcing plate 402 is further arranged below the buckling claw 4, and the lower end opening of the sliding buckle 401 faces the direction of the reinforcing plate 402. The reinforcing plate 402 reinforces the integral structure, the lower opening of the slider 401 faces the direction of the reinforcing plate 402, and the reinforcing plate 402 can be attached to the plane of the cross bar 3 as shown in fig. 1-2.

In the preferred embodiment, the closed end of the locking claw 4 is provided with a through hole, and the first bolt 5 passes through the through hole and the kidney-shaped hole 301 to be fixed on the cross bar 3. The first bolt 5 is used for fixing the locking claw 4, and the locking claw 4 can also be used for adjusting the position on the kidney-shaped hole 301.

In a preferred embodiment, the inner side surface of the latch 4 is provided with a plurality of friction rubbers 7. By screwing the second bolt 6 of the ladder, the buckling claws at the two sides of the slider 401 can deform inwards to approach, and the buckling claws 4 rub the rubber 7 to clamp the two sides of the ladder beam of the ladder, so that the ladder is fixed by surface contact friction, and the ladder is connected and fastened with the buckling claws 4.

In a preferred embodiment, two ends of the cross bar 3 are fixed on the manhole flange plate 1 through third bolts 8, and the third bolts 8 pass through the kidney-shaped holes 301 to be in threaded connection with the manhole flange plate 1. The manhole flange plate 1 with different diameters is suitable.

In a preferred embodiment, a rubber pad is provided on the inner side of the slider 401. The slide fastener 401 is connected and fastened with the cross bar 3 by forming surface contact friction fixation.

The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims

1. A manhole ladder fixing device, characterized by: the cross-section of the cross rod (3) is of an L-shaped structure, a plurality of waist-shaped holes (301) are formed in two perpendicular planes of the L-shaped structure, at least two buckling claws (4) are arranged on the cross rod (3), the buckling claws (4) are of a U-shaped structure, sliding buckles (401) of the U-shaped structure are arranged at the closed ends of the buckling claws (4), the sliding buckles (401) are used for being hung on a plate body of the cross rod (3), second bolts (6) are arranged at the open ends of the buckling claws (4), the crawling ladder (2) is arranged inside the buckling claws (4) and limited through the second bolts (6), and the crawling rods (201) of the crawling ladder (2) are propped against the upper end faces of the buckling claws (4).

2. The manhole ladder securement device of claim 1, wherein: a closed reinforcing plate (402) is arranged below the buckling claw (4), and the lower end opening of the sliding buckle (401) faces the direction of the reinforcing plate (402).

3. The manhole ladder securement device of claim 1, wherein: the closed end of the buckling claw (4) is provided with a through hole, and the first bolt (5) passes through the through hole and the kidney-shaped hole (301) to be fixed on the cross rod (3).

4. The manhole ladder securement device of claim 1, wherein: the inner side surface of the buckling claw (4) is provided with a plurality of friction rubbers (7).

5. The manhole ladder securement device of claim 1, wherein: the two ends of the cross rod (3) are fixed on the manhole flange plate (1) through third bolts (8), and the third bolts (8) penetrate through the kidney-shaped holes (301) to be in threaded connection with the manhole flange plate (1).

6. The manhole ladder securement device of claim 1, wherein: the inner side surface of the slide fastener (401) is provided with a rubber pad.