CN216517755U

CN216517755U - Hook type extension ladder

Info

Publication number: CN216517755U
Application number: CN202121406536.5U
Authority: CN
Inventors: 丁增杰; 滕建兴
Original assignee: Ficont Industry Tianjin Co ltd
Current assignee: Ficont Industry Tianjin Co ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-05-13
Anticipated expiration: 2031-06-23

Abstract

The utility model discloses a hook type extension ladder, comprising: the device comprises a fixed ladder, a movable ladder, a locking mechanism, a hook, an upper limiting device, a lower limiting device, a positioning device, an upper guide device and a lower guide device; the fixed ladder is provided with a hook, and the fixed ladder is provided with a positioning device, a lower guide device and an upper limiting device; the movable ladder is provided with an upper guide device and a lower limiting device; the positioning device and the upper and lower guiding devices are used for connecting the movable ladder with the fixed ladder. The utility model has the beneficial effects that: flexible use, convenient transportation, simple installation, light weight, safety and reliability.

Description

Hook type extension ladder

Technical Field

The utility model relates to the field of wind power cabin extension ladders, in particular to a hook type extension ladder.

Background

The wind generating set is generally installed in an area with good wind resources and generally consists of a cabin, a tower and an impeller; the wind power blows the impeller to rotate, a generator set in the engine room is driven to run to generate electricity, and the tower is used for supporting the engine room and the impeller; in order to ensure that the impeller is in an ideal angle with the wind direction all the time, the engine room can rotate according to the real-time wind direction to ensure that the impeller faces the wind.

The tower drum which plays a supporting role in the wind generating set and absorbs the vibration of the set is composed of a plurality of sections, the whole body is a cone, the lower part is large and the upper part is small, the lower part is connected with a fan foundation, and the upper part is connected with an engine room. When parts are overhauled and installed in the cabin, a telescopic ladder which is convenient to disassemble and can be applied to different working conditions is needed, and particularly a hook type telescopic ladder can be safely hung on a cross arm of the cabin so as to be convenient for personnel to overhaul from top to bottom.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide the wind power generation device which is low in cost, simple in structure, strong in adaptability, capable of better adapting to the condition of severe field use working conditions in the wind power industry, better in structural strength, simpler in structure, lighter in weight and easy to disassemble and assemble.

In order to achieve the purpose, the utility model provides a hook type extension ladder which comprises a fixed ladder, a movable ladder, a locking mechanism, a hook, an upper limiting device, a lower limiting device, a positioning device, an upper guiding device and a lower guiding device. The method is characterized in that: the movable ladder is provided with an upper guide device and a lower limiting device; the positioning device and the upper and lower guide devices connect the movable ladder with the fixed ladder; when the device is used, a hook on the fixed ladder is hooked on a cross brace of the cabin, the movable ladder is pulled to the lower limiting device, the locking mechanism is rotated to lock the movable ladder, and the lower end of the movable ladder is in contact with a cabin platform; after the use is finished, the extension ladder is moved upwards, so that the hook on the fixed ladder is separated from the cabin cross brace; then the locking mechanism is unlocked, and the movable ladder is automatically retracted; the movable ladder is locked by rotating the locking mechanism. The hook-type extension ladder is moved away from the working position.

Optionally, the fixed ladder is provided with a locking mechanism.

Optionally, the fixed ladder is provided with a hook.

The utility model has the beneficial effects that:

1. the locking mechanism has an omnidirectional locking function and high safety factor;

2. the ladder stand is made of aluminum alloy, so that the whole ladder stand is light in weight and easy to carry;

3. the fixed ladder is provided with the hook, so that the slipping risk of the ladder stand is reduced;

4. the double locking mechanisms ensure the stability and safety of the ladder stand.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the utility model and are not intended to be limiting of the utility model. Wherein:

FIG. 1 is a front elevational view of the present invention in an extended condition;

FIG. 2 is a left side view of the utility model in an extended state;

FIG. 3 is a view of the present invention in a collapsed state;

FIG. 4 is an isometric view of the present invention;

reference numerals:

1-fixing a ladder; 2-moving the ladder; 3-a locking mechanism; 4-hooking; 5-upper limiting means; 6-a lower limiting device; 7-a positioning device; 8-upper guiding device; 9-lower guide.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present invention will be described in detail with reference to the accompanying drawings and the embodiments.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships, without particular description, based on the orientations or positional relationships shown in the drawings, merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 4, the present embodiment provides a hook type extension ladder, which includes a fixed ladder 1, a movable ladder 2, a locking mechanism 3, a hook 4, an upper limiting device 5, a lower limiting device 6, a positioning device 7, an upper guiding device 8, and a lower guiding device 9. The inner side surface of the fixed ladder 1 is provided with a positioning device 7, the fixed ladder is symmetrically arranged on a vertical beam of the ladder, the positioning devices 7 can be three pairs, the lower guide devices 9 are arranged on two inner side surfaces of the vertical beam of the fixed ladder 1 and symmetrically arranged on the vertical beam of the ladder, the lower guide devices 9 are two pairs, the upper guide devices 8 are arranged on two outer side surfaces of the vertical beam of the movable ladder 2 and symmetrically arranged on the vertical beam of the ladder, the positioning devices 7 and the upper guide devices 8 are respectively contacted with two side surfaces and front and back surfaces of the fixed ladder 1, the positioning devices 7 and the lower guide devices 9 are respectively contacted with two side surfaces and front and back surfaces of the movable ladder 2 to form a sliding channel of the movable ladder 2, the upper part of the fixed ladder 1 is provided with a hook 4, the lower part of the fixed ladder is provided with a locking mechanism 3 and an upper limiting device 5, when in use, the hook 4 is hung on a cross brace of a cabin, the movable ladder 2 is pulled, the movable ladder 2 moves downwards along the sliding channel formed by the upper guide devices 8, the positioning devices 7 and the lower guide devices 9, until the upper guide device 8 contacts the upper limiting device 5, the locking mechanism 3 is rotated to be inserted into a locking hole in the upper portion of the movable ladder 2, and locking action of the hook type telescopic ladder is completed. When the ladder is not used, the movable ladder 2 is moved upwards to drive the cross arm of the hook 4 cabin on the fixed ladder 1 to be separated, the locking mechanisms 3 on two sides of the fixed ladder 1 are rotated to be pulled out of the locking holes in the upper part of the movable ladder 2, the movable ladder 2 moves downwards under the action of gravity until the lower guide device 9 is contacted with the lower limiting device 6, the locking mechanisms 3 are rotated to be inserted into the positioning holes in the lower part of the movable ladder 2, and the telescopic ladder is folded.

The beneficial effects of the embodiment are that 1, the locking mechanism has an omnidirectional locking function and a high safety factor; 2. the ladder stand is made of aluminum alloy, so that the whole ladder stand is light in weight and easy to carry; 3. the fixed ladder is provided with the hook, so that the slipping risk of the ladder stand is reduced; 4. the double-locking mechanism ensures the stability and the safety of the ladder stand.

Preferably, the fixed ladder is provided with a locking mechanism.

This preferred embodiment improves the stability of cat ladder.

Preferably, the fixed ladder is provided with a hook.

This preferred embodiment improves the security of cat ladder, is equipped with the couple at the fixed ladder, increases the strong point of cat ladder, reduces the cat ladder risk of skidding.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The utility model provides a couple formula extension ladder, its characterized in that, includes fixed ladder, removes ladder, couple, positioner and goes up guider, lower guider, the couple sets up in fixed ladder upper end, remove the last guider that is equipped with of ladder, be equipped with positioner and lower guider on the fixed ladder, positioner symmetrical install in the internal surface that the roof beam was erect to the fixed ladder, positioner with go up guider respectively with fixed ladder both sides face and front-back face contact, positioner with down guider respectively with remove ladder both sides face and front-back face contact, form the slide passage who removes the ladder.

2. The hook type extension ladder according to claim 1, wherein the fixed ladder is provided with an upper limiting device, the movable ladder is provided with a lower limiting device, and the upper limiting device and the lower limiting device are used for limiting the relative movement track of the fixed ladder and the movable ladder.

3. The hook type extension ladder as claimed in claim 2, wherein a locking mechanism is mounted on the fixed ladder for rotating the locking mechanism to be correspondingly inserted into a locking hole at an upper portion or a positioning hole at a lower portion of the moving ladder when the moving ladder moves to the state that the upper guide device is in contact with the upper limiting device or the moving ladder moves to the state that the lower guide device is in contact with the lower limiting device, so as to correspondingly complete the locking action or the collapsing of the hook type extension ladder.