CN211500513U

CN211500513U - Telescopic staircase

Info

Publication number: CN211500513U
Application number: CN201922285350.8U
Authority: CN
Inventors: 张红伟; 刘斌; 陈中志; 陈良勇
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-09-15
Anticipated expiration: 2029-12-18

Abstract

The utility model provides a telescopic escalator, it includes fixed ladder, extension ladder, guide block and slider, is connected fixedly through the montant upper end of guide block with fixed ladder, is connected fixedly through the telescopic link lower extreme of slider with the extension ladder, through extension ladder lift in-process guide block direction, the slider is spacing, rises back annular ring through the extension ladder and links to each other with opening earrings hook, makes the extension ladder stretch out the hole or face outside the limit. The utility model overcomes former hole or when facing the limit operation, staircase upper portion is parallel with the ground, is unfavorable for the operator to scramble, appears stepping on empty or the problem that falls easily, has simple structure, and the operator is difficult for falling, is difficult for stepping on empty, safe and reliable, convenient operation's characteristics.

Description

Telescopic staircase

Technical Field

The utility model belongs to the technical field of the mixed-flow unit installation is maintained, a telescopic staircase is related to.

Background

In the construction process of a hydropower station, in order to ensure that the parts such as the hole, the adjacent edge and the like are protected safely, a fence is generally erected around the hole and the adjacent edge or the hole is covered by a cover plate; the escalator installed at the positions near the edge, the hole and the like is generally flush with the ground or slightly lower than the ground, when workers need to enter the hole and face the edge for operation, the fence or the cover plate needs to be moved away firstly, and because the top end of the escalator does not have a reliable handrail, safety risks such as stepping on empty and falling easily occur when the workers enter the hole or face the edge escalator, and the personal safety of the workers is difficult to guarantee.

Disclosure of Invention

The utility model aims to solve the technical problem that a telescopic escalator is provided, simple structure adopts the guide block to be connected fixedly with the montant upper end of fixed ladder, and the slider is connected fixedly with the telescopic link lower extreme of extension ladder, and extension ladder lift in-process guide block direction, the slider is spacing, and the extension ladder rises the back by annular ring and opening earring hook even, makes the extension ladder stretch out the hole or face outside the limit, and the operator is difficult for falling, is difficult for stepping on empty, safe and reliable, convenient operation.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a telescopic staircase comprises a fixed staircase, a telescopic staircase, a guide block and a slide block; the guide block is located the montant upper end of fixed ladder and connects fixedly, and the slider is connected fixedly with the telescopic link lower extreme of extension ladder, slider and fixed ladder's montant sliding fit, stagger each other with the horizontal pole that the montant of fixed ladder is connected and the horizontal pole of being connected with the telescopic link of extension ladder.

The montant of fixed ladder and extension ladder's telescopic link are the circular body of rod.

And two ends of the vertical rod of the fixed ladder are provided with supporting legs which are horizontally connected with the vertical rod.

The guide block and the sliding block are groove plates with one sides opened, and the vertical rod and the telescopic rod are located in the groove.

And the guide block is provided with a closed ear ring which is connected with an annular ring.

The lower end of the telescopic rod is provided with an opening ear ring which is positioned on the same side with the closed ear ring on the guide block.

The cross rod is a circular rod body, a flower steel plate is arranged on the cross rod, and raised patterns of the flower steel plate face upwards.

A telescopic staircase comprises a fixed staircase, a telescopic staircase, a guide block and a slide block; the guide block is located the montant upper end of fixed ladder and is connected fixedly, and the slider is connected fixedly with the telescopic link lower extreme of extension ladder, slider and fixed ladder's montant sliding fit, stagger each other with the horizontal pole that the montant of fixed ladder is connected and the horizontal pole of being connected with the telescopic link of extension ladder. Simple structure is connected fixedly through the montant upper end of guide block and fixed ladder, is connected fixedly through the telescopic link lower extreme of slider and extension ladder, through extension ladder lift in-process guide block direction, the slider is spacing, rises back annular ring through the extension ladder and links to each other with opening earrings hook, makes the extension ladder stretch out the hole or face outside the limit, the operator is difficult for falling, is difficult for stepping on empty, safe and reliable, convenient operation.

In the preferred scheme, the vertical rod of the fixed ladder and the telescopic rod of the telescopic ladder are both circular rod bodies. Simple structure, during the use, for the montant of circular structure and telescopic link intensity height, be convenient for draw materials, processing simple manufacture.

In a preferred scheme, two ends of a vertical rod of the fixed ladder are provided with supporting legs horizontally connected with the vertical rod. Simple structure, during the use, the landing leg of being connected with the montant is deepened the hole inner wall or is faced the limit in, makes the whole fixed ladder be in fixed commentaries on classics attitude, stable in structure, difficult slipping, the security performance is good.

In a preferred scheme, the guide block and the sliding block are groove plates with one sides opened, and the vertical rod and the telescopic rod are positioned in the groove. Simple structure, during the use, be located the mutual parallel contact of guide block notch montant and telescopic link, the montant and the telescopic link contact surface of circular structure are line contact, and frictional resistance is little during the slip.

In a preferred scheme, a closed ear ring is arranged on the guide block, and an annular ring is connected with the closed ear ring. The structure is simple, when the telescopic ladder lifting device is used, the guide block does not ascend or descend along with the telescopic ladder in the lifting process of the telescopic ladder, and the closed earrings connected with the guide block and the annular rings connected with the closed earrings do not ascend or descend along with the telescopic ladder.

In a preferred scheme, the lower end of the telescopic rod is provided with an opening ear ring which is positioned on the same side as the closed ear ring on the guide block. Simple structure, during the use, the extension ladder upwards slides along fixed ladder and stretches out the entrance to a cave and face limit upper portion after, by annular ring and mouthful earrings (22) hookup, the restriction extension ladder continues to rise or descend.

In a preferred scheme, the cross rod is a circular rod body, a flower steel plate is arranged on the cross rod, and raised patterns of the flower steel plate face upwards. Simple structure, during the use, the horizontal pole is as the bearing, and the colored steel sheet that sets up on it not only can strengthen structural strength, can also place to skid when trampling.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is the structure diagram of the utility model discloses montant and telescopic link and guide block.

Fig. 3 is a schematic structural view of the cross bar of the present invention.

In the figure: fixed ladder 1, montant 11, landing leg 12, extension ladder 2, telescopic link 21, opening earrings 22, guide block 3, closed earrings 31, annular ring 32, slider 4, horizontal pole 5, flower steel sheet 51.

Detailed Description

As shown in fig. 1 to 3, a telescopic escalator comprises a fixed ladder 1, a telescopic ladder 2, a guide block 3 and a slide block 4; the guide block 3 is located 11 upper ends of the montant of the fixed ladder 1 and is connected fixedly, the slider 4 is connected fixedly with 21 lower ends of the telescopic rods of the telescopic ladder 2, the slider 4 is in sliding fit with the montant 11 of the fixed ladder 1, and the cross rod 5 connected with the montant 11 of the fixed ladder 1 and the cross rod 5 connected with the telescopic rods 21 of the telescopic ladder 2 are staggered mutually. Simple structure, it is fixed to be connected through guide block 3 and the 11 upper ends of montant of fixed ladder 1, it is fixed to be connected with 21 lower extremes of telescopic link of extension ladder 2 through slider 4, through the 3 direction of 2 lift in-process guide blocks of extension ladder, slider 4 is spacing, through the ascending back annular ring 32 and the hookup of opening earrings 22 of extension ladder 2, make extension ladder 2 stretch out the hole or face outside the limit, the operator is difficult for falling, is difficult for stepping on empty, safety and reliability, convenient operation.

In the preferred scheme, the vertical rod 11 of the fixed ladder 1 and the telescopic rod 21 of the telescopic ladder 2 are both circular rod bodies. Simple structure, during the use, for the montant 11 and the telescopic link 21 intensity height of circular structure, be convenient for draw materials, processing simple manufacture.

In a preferable scheme, two ends of a vertical rod 11 of the fixed ladder 1 are provided with supporting legs 12 which are horizontally connected with the vertical rod. Simple structure, during the use, the landing leg 12 of being connected with montant 11 gos deep into the hole inner wall or faces in the limit, makes fixed ladder 1 wholly be in fixed commentaries on classics attitude, stable in structure, and difficult the cunning is good for the security performance.

In a preferred scheme, the guide block 3 and the slide block 4 are groove plates with one side opened, and the vertical rod 11 and the telescopic rod 21 are positioned in the groove. Simple structure, during the use, be located 3 intraoral montants 11 of groove of guide block and telescopic link 21 mutual parallel contacts, the montant 11 and the telescopic link 21 contact surface of circular structure are line contact, and frictional resistance is little during the slip.

In a preferred embodiment, the guide block 3 is provided with a closed ear ring 31, and an annular ring 32 is connected to the closed ear ring 31. Simple structure, during the use, in extension ladder 2 lift in-process, guide block 3 does not rise or descend along with extension ladder 2, and the closed earrings 31 of being connected with it and the annular ring 32 of being connected with closed earrings 31 do not rise or descend along with extension ladder 2 yet.

In a preferred embodiment, the lower end of the telescopic rod 21 is provided with an opening ear 22, which is located on the same side as the closing ear 31 on the guide block 3. Simple structure, during the use, extension ladder 2 slides along fixed ladder 1 upwards and stretches out the entrance to a cave and face limit upper portion after, by annular ring 32 with the auricle ring 22 hookup, restriction extension ladder 2 continues to rise or descend.

Preferably, the extension ladder 2 is blocked from falling off the fixed ladder 1 when it slides down to the leg 12 of the lower part of the vertical bar 11.

In a preferred scheme, the cross bar 5 is a circular bar body, a flower steel plate 51 is arranged on the cross bar, and raised patterns of the flower steel plate 51 face upwards. Simple structure, during the use, horizontal pole 5 is as the bearing, and the colored steel sheet 51 that sets up on it not only can strengthen structural strength, can also place to skid when trampling.

As above telescopic escalator, during the installation use, guide block 3 is connected fixedly with 11 upper ends of montant of fixed ladder 1, slider 4 is connected fixedly with 21 lower extremes of telescopic link of

extension ladder

2, 3 direction of extension ladder 2 lift in-process guide block, slider 4 is spacing, ring 32 and opening earrings 22 hookup behind the extension ladder 2 rises, make extension ladder 2 stretch out the hole or face outside the limit, the operator is difficult for falling, is difficult for stepping on empty, safe and reliable, convenient operation.

When in use, the vertical rod 11 and the telescopic rod 21 which are of the circular structures have high strength, are convenient to draw materials, and are simple to process and manufacture.

When the fixing ladder is used, the supporting legs 12 connected with the vertical rods 11 penetrate into the inner wall of the hole or the adjacent edges, so that the whole fixing ladder 1 is in a fixed rotating state, the structure is stable, slipping is not easy to occur, and the safety performance is good.

When the sliding guide block is used, the vertical rod 11 and the telescopic rod 21 which are positioned in the groove of the guide block 3 are in parallel contact with each other, the contact surfaces of the vertical rod 11 and the telescopic rod 21 in the circular structure are in line contact, and the friction resistance is small during sliding.

When the telescopic ladder 2 is used, the guide block 3 does not ascend or descend along with the telescopic ladder 2 in the ascending and descending process of the telescopic ladder 2, and the closed earrings 31 connected with the guide block and the annular rings 32 connected with the closed earrings 31 do not ascend or descend along with the telescopic ladder 2.

When the telescopic ladder 2 is used, the telescopic ladder 2 slides upwards along the fixed ladder 1 and extends out of the opening and the upper part of the adjacent edge, and the annular ring 32 is hooked with the ear ring 22 to limit the telescopic ladder 2 to continuously ascend or descend.

During the use, horizontal pole 5 is as the bearing, and the colored steel sheet 51 that sets up on it not only can strengthen structural strength, can also place to skid when trampling.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. A telescopic staircase, characterized by: the telescopic ladder comprises a fixed ladder (1), a telescopic ladder (2), a guide block (3) and a slide block (4); the guide block (3) is located and is connected fixedly on montant (11) of fixed ladder (1), and slider (4) are connected fixedly with telescopic link (21) lower extreme of extension ladder (2), and slider (4) and montant (11) sliding fit of fixed ladder (1), and horizontal pole (5) of being connected with montant (11) of fixed ladder (1) and horizontal pole (5) of being connected with telescopic link (21) of extension ladder (2) stagger each other.

2. The escalator of claim 1, wherein: the vertical rod (11) of the fixed ladder (1) and the telescopic rod (21) of the telescopic ladder (2) are both circular rod bodies.

3. The escalator of claim 1, wherein: and two ends of a vertical rod (11) of the fixed ladder (1) are provided with supporting legs (12) which are horizontally connected with the vertical rod.

4. The escalator of claim 1, wherein: the guide block (3) and the sliding block (4) are groove plates with one sides opened, and the vertical rod (11) and the telescopic rod (21) are located in the groove openings.

5. The escalator of claim 1, wherein: the guide block (3) is provided with a closed earring (31), and an annular ring (32) is connected with the closed earring (31).

6. The escalator of claim 1, wherein: the lower end of the telescopic rod (21) is provided with an opening ear ring (22) which is positioned on the same side with the closed ear ring (31) on the guide block (3).

7. The escalator of claim 1, wherein: the cross rod (5) is a circular rod body, a flower steel plate (51) is arranged on the cross rod, and raised patterns of the flower steel plate (51) face upwards.