CN219993606U - Adjustable ladder for corridor - Google Patents

Abstract

The utility model discloses an adjustable ladder for a gallery, which comprises a top supporting column, a base and a stepping device; the base is fixedly connected with the top support column, and is hinged with the stepping device; the two side connecting plates of the stepping device are vertically fixed at the left end and the right end of the connecting plate, the lower end of the side connecting plate is vertically fixed with the side supporting plates, the connecting plate is hinged with one end of the pedal, the left side and the right side of the lower end surface of the other end of the pedal are respectively hinged with the spiral adjusting telescopic rods, and the spiral adjusting telescopic rods are hinged on the side supporting plates at the left side and the right side; the front end and the rear end of the side connecting plates are provided with hinge holes, and each stepping unit is correspondingly hinged with each other through the hinge holes of the side connecting plates at two sides. According to the utility model, through the arrangement of the top supporting column and the base, the stepping device can be fixed under the condition that no fixing structures such as expansion bolts and the like are used; the pedal is hinged with the connecting plate and the two screws are used for adjusting the hinging arrangement of the telescopic rods, so that the step angle can be adjusted according to the radian of the on-site slope.

Description

Adjustable ladder for corridor

Technical Field

The utility model relates to the technical field of movable elevator saving equipment, in particular to an adjustable elevator for a corridor.

Background

Currently, a large number of engineering galleries exist in a nuclear power plant, for example, 18 types of galleries are arranged in a mountain nuclear power plant at one stage and are distributed in each underground area in the range of a nuclear island, a conventional island and a BOP auxiliary structure. Except for part of corridor shafts, the relative elevation of the whole plant corridor is below 0m, the lowest relative elevation of the corridor structure is-32.5 m, the highest relative elevation is-0.1 m, and the whole plant corridor adopts a cast-in-situ reinforced concrete structure.

Wherein, the gradient in the gallery is mostly S-shaped abrupt slope. The flexible ladder cannot be used and the crawling ladder cannot be erected, so that the flexible ladder becomes an obstacle for overhauling work of the gallery below; in order to ensure the inner lining and the structural integrity of the gallery, the fixing modes such as expansion bolts and the like are not needed, so that the erection of a rope ladder or a cat ladder in the gallery is extremely inconvenient.

Therefore, there is a need for an adjustable ladder for a corridor to solve the problem that a rope ladder or a cat ladder in the corridor is inconvenient to set up, resulting in a maintenance work obstacle.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides an adjustable ladder for a gallery, which aims at solving the problem that a rope ladder or a crawling ladder in the gallery is inconvenient to set up, so that maintenance work obstacles exist.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

an adjustable ladder for corridor which characterized in that: comprises a top supporting column, a base and a stepping device; the upper end of the base is fixedly connected with the top support column, and one side of the base is hinged with the stepping device; the stepping device comprises a plurality of stepping units, each stepping unit comprises two side connecting plates, pedals, two side supporting plates and two spiral adjusting telescopic rods, the two side connecting plates are vertically fixed at the left end and the right end of each connecting plate, the lower ends of the side connecting plates are respectively and vertically fixed with the side supporting plates, the side supporting plates are respectively arranged at one sides of the two side connecting plates opposite to each other, the connecting plates are hinged with one end of each pedal, the left side and the right side of the lower end face of the other end of each pedal are respectively hinged with the upper end of one spiral adjusting telescopic rod, and the lower ends of the spiral adjusting telescopic rods are respectively hinged on the side supporting plates at the left side and the right side; the front end and the rear end of the side connecting plates are respectively provided with a hinge hole, and each stepping unit is correspondingly hinged with each other through the hinge holes of the side connecting plates at two sides.

In order to optimize the technical scheme, the specific measures adopted further comprise:

further, the spiral adjusting telescopic rod comprises an upper connecting screw rod, a lower connecting screw rod and a connecting sleeve; the upper end of the upper connecting screw rod is hinged with the lower end face of the pedal, the lower end of the lower connecting screw rod is hinged with the upper end face of the side supporting plate, bi-directional internal threads are arranged in the connecting sleeve, and the connecting sleeve is respectively in threaded connection with the upper connecting screw rod and the lower connecting screw rod.

Further, the step unit further comprises two rollers, and the two rollers are symmetrically arranged on the lower end faces of the two side support plates respectively.

Further, the roller adopts a roller with a locking structure.

Further, the connecting plate is hinged with the pedal through a hinge structure.

Further, the top support column comprises a bottom top support column, a middle top support column and a top support column; the bottom jacking column comprises a fixing seat and a screw rod, a connecting shaft is fixed on the fixing seat, a through hole with internal threads is formed in the connecting shaft, the lower end of the screw rod is in threaded connection with the connecting shaft, and the lower end of the fixing seat is fixedly connected with the base; the lower end of the middle top supporting column is provided with a threaded through hole, the middle top supporting column is in threaded connection with the upper end of the screw rod through the threaded through hole, and the upper end of the middle top supporting column is fixedly clamped with the top supporting column; the threaded through hole of the middle supporting column adopts an internal thread opposite to the internal thread of the connecting shaft.

Further, a fixed block is fixed at the upper end of the top supporting column.

Further, a fixing nut is fixed on the screw rod between the bottom supporting column and the middle supporting column.

Further, the base is provided with a through hole penetrating left and right.

Further, two jack-up posts are provided.

The beneficial effects of the utility model are as follows:

according to the utility model, through the arrangement of the top supporting column and the base, the stepping device can be fixed under the condition that no fixing structure such as an expansion bolt is used, and the supporting structure replaces the traditional fixing mode such as the expansion bolt, so that the lining and the structure of a gallery are better protected; the pedal is hinged with the connecting plate and the two spiral adjusting telescopic rods are hinged, so that the step angle of each step can be adjusted according to the radian of a scene slope, the height of the step can be adjusted by the spiral adjusting telescopic rods according to the complicated space structure in the corridor and different gradients, the step angle of each step can be vertical to the center of a person in progress as much as possible, the safety of the person passing up and down is ensured, and the operations such as checking, overhauling and the like in the corridor are facilitated; the device is manufactured by adopting aluminum alloy materials, has stronger structure and lighter weight, and the base and the top support column are also split into a plurality of components, so that the device is more convenient to carry and install in galleries and other narrow channels; the device is fixed by using a double-rod propping mode, a base and a double-rod propping column are used as fulcrums, and a wheel type high-strength aluminum alloy spliced step is a ramp passing mode.

Drawings

FIG. 1 is a schematic view of the overall structure of an adjustable ladder for a gallery according to the present utility model;

FIG. 2 is a schematic illustration of the actual use of an adjustable ladder for a corridor in accordance with the present utility model;

FIG. 3 is a schematic view of a stepping device of an adjustable ladder for a gallery according to the present utility model;

FIG. 4 is a schematic view of a screw adjusting telescopic rod of an adjustable ladder for a gallery according to the present utility model;

FIG. 5 is a schematic view of the bottom roof strut of an adjustable ladder for a gallery in accordance with the present utility model;

FIG. 6 is a schematic illustration of the connection of the bottom and middle top struts of an adjustable ladder for a gallery in accordance with the present utility model;

FIG. 7 is a top view of a base member of an adjustable ladder for a gallery in accordance with the present utility model;

fig. 8 is a side cross-sectional view of a base of an adjustable ladder for a gallery in accordance with the present utility model.

Reference numerals: 1. a stepping device; 11. a side connection plate; 12. a connecting plate; 13. a hinge structure; 14. a pedal; 15. a side support plate 16, a spiral adjusting telescopic rod; 161. connecting sleeves; 17. a roller; 2. a base; 3. a bottom top support column; 31. a fixing seat; 32. a fixing nut; 33. a screw; 4. a middle top support column; 5. a top support post.

Description of the embodiments

The present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, an adjustable ladder for a gallery according to an embodiment of the present utility model includes a top stay, a base 2, and a stepping device 1; the upper end of the base 2 is fixedly connected with the top support column, and one side of the base 2 is hinged with the stepping device 1; the stepping device 1 comprises a plurality of stepping units, each stepping unit comprises two side connecting plates 11, connecting plates 12, pedals 14, two side supporting plates 15 and two spiral adjusting telescopic rods 16, the two side connecting plates 11 are vertically fixed at the left end and the right end of the connecting plates 12, the lower ends of the side connecting plates 11 are respectively and vertically fixed with the side supporting plates 15, the side supporting plates 15 are respectively arranged at one side opposite to the two side connecting plates 11, the connecting plates 12 are hinged with one end of each pedal 14, the left side and the right side of the lower end face of the other end of each pedal 14 are respectively hinged with the upper end of one spiral adjusting telescopic rod 16, and the lower ends of the spiral adjusting telescopic rods 16 are respectively hinged on the side supporting plates 15 at the left side and the right side; hinge holes are formed in the front end and the rear end of the side connecting plates 11, and each stepping unit is hinged through the front and the rear corresponding hinge holes of the side connecting plates 11 on the two sides.

Thus, by arranging the top supporting column and the base 2, the stepping device can be fixed under the condition that no fixing structure such as expansion bolts is used; the supporting structure replaces the traditional fixing modes such as expansion bolts and the like, so that the lining and the structure of the gallery are better protected; the pedal 14 is hinged with the connecting plate 12 and the two screws are used for adjusting the angle of the pedal 14, so that the pedal can be fixed in an angle adjusting manner, the height of the pedal can be adjusted through the screws by aiming at a complex space structure in the gallery according to different gradients, and the angle of the pedal 14 is set as required, so that the operation such as checking and overhauling in the gallery can be facilitated. In this embodiment, the limitation or setting of the adjustable angle range of the pedal 14 can be achieved by setting the spacing between the connecting plate 12 and the screw adjusting telescopic rod 16 or setting the adjustable length of the screw adjusting telescopic rod 16.

As shown in fig. 4, in the present embodiment, the screw adjusting telescopic rod 16 includes an upper connecting screw, a lower connecting screw, and a connecting sleeve 161; the upper end of the upper connecting screw rod is hinged with the lower end surface of the pedal 14, the lower end of the lower connecting screw rod is hinged with the upper end surface of the side supporting plate 15, a double-direction internal thread is arranged in the connecting sleeve 161, and the connecting sleeve 161 is respectively in threaded connection with the upper connecting screw rod and the lower connecting screw rod; in this way, the upper connecting screw and the lower connecting screw are respectively connected through the internal threads with opposite upper and lower ends in the connecting sleeve 161, so that the upper connecting screw and the lower connecting screw can be controlled to move relatively or oppositely in the connecting sleeve 161 by rotating the connecting sleeve 161, and the length of the spiral adjusting telescopic rod 16 is adjusted, namely the rotating angle of the pedal 14 is adjusted.

In this embodiment, the stepping unit further comprises two rollers 17, and the two rollers 17 are symmetrically arranged on the lower end surfaces of the two side support plates 15 respectively; therefore, the abrasion to the device is reduced through the roller 17, and the device is convenient to move and use; in this embodiment, the roller 17 is mounted below the screw adjusting telescopic rod 16, so that the angle base of the pedal 14 and the ground can be increased to some extent.

Wherein, the roller 17 adopts a roller with a locking structure; therefore, after the stepping unit is installed, the roller 17 is locked and limited, so that the stability in use is ensured.

In the embodiment, a hinge structure 13 is adopted to hinge the connecting plate 12 and the pedal 14; therefore, the stability of the motion trail is ensured while the connection strength is ensured.

As shown in fig. 5 and 6, in the present embodiment, the top stay includes a bottom stay 3, a middle stay 4, and a top stay 5; the bottom top supporting column 3 comprises a fixed seat 31 and a screw rod 33, a connecting shaft is fixed on the fixed seat 31, a through hole with internal threads is formed in the connecting shaft, the lower end of the screw rod 33 is in threaded connection with the connecting shaft, and the lower end of the fixed seat 31 is fixedly connected with the base 2; the lower end of the middle top supporting column 4 is provided with a threaded through hole, the middle top supporting column 4 is in threaded connection with the upper end of the screw 33 through the threaded through hole, and the upper end of the middle top supporting column 4 is clamped and fixed with the top supporting column 5; the threaded through hole of the middle supporting column 4 adopts an internal thread opposite to the internal thread of the connecting shaft. Therefore, the three-section design of the bottom supporting column 3, the middle supporting column 4 and the top supporting column 5 is convenient for the transportation and the use of the device; through the threaded connection between the bottom top support column 3, the middle top support column 4 and the screw 33, the screw 33 can be rotated to adjust the overall height of the middle top support column 4 and the top support column 5, so that the top support column 5 is propped against the top of the gallery, the base 2 and the top support column 5 are fixed in the gallery through the interaction of forces, and the adaptive fixed adjustment according to galleries with different heights can be realized, and the fixed stability is ensured.

Wherein, the upper end of the top supporting column 5 is fixed with a fixed block which is used for being fixed with the upper end of the gallery; therefore, the fixing area between the device and the gallery is increased through the fixing block, so that the stability of fixing is improved.

Wherein, a fixed nut 32 is fixed on a screw 33 between the bottom supporting column 3 and the middle supporting column 4; in this way, when the space between the bottom support column 3 and the middle support column 4 is adjusted, the fixing nut 32 can be used for applying force in a rotating way, so that the adjustment is facilitated.

As shown in fig. 7 and 8, in this embodiment, the base 2 is provided with a through hole penetrating from left to right, so that the carrying and installation in galleries and other narrow passages are more convenient; the base 2 comprises two base parts, so that the carrying and the storage are further facilitated; the two bases 2 can be assembled left and right to form a complete base 2, and bolt holes for fixedly connecting with the fixing seat 31 are symmetrically preset along the central lines of the two base parts; the fixing seat 31 is fixedly connected with the two base parts at the same time, so that the stability of the connection of the base 2 can be ensured.

In this embodiment, two of the top struts are provided. Through the structure of two top stay posts, ensure fixed stability.

In this embodiment, the step 1 is made of a high-strength aluminum alloy material. The step 1 and the top support column are made of aluminum alloy materials, so that the structure is stronger and the weight is lighter. The base 2 can be made of carbon steel as a balancing weight.

When the utility model is used, an operator can firstly install the bottom supporting column 3 on the base 2 through the bolt connection, and then the middle supporting column 4 and the top supporting column 5 are connected and fixed; the whole height of the top supporting column is adjusted under the action of the rotating middle top supporting column 4 and the screw 33, so that the base and the top supporting column are fixed on the gallery ramp; then, according to the serial numbers arranged on the stepping units in advance, each stepping unit is connected by bolts; the telescopic rod 16 is correspondingly adjusted according to different gradients, so that the height or angle of the pedal 14 is adjusted, the step angle of each step is vertical to the center of the person, and the safer passing of the person up and down is ensured; after readjustment is completed, the pulley 17 is locked.

The ladder section for personnel to pass is formed by assembling the components, so that the main problem that maintenance work cannot be smoothly carried out on a gallery below due to incapability of using a rope ladder and erecting a cat ladder is solved. Through two top stay posts and base 2 as the fulcrum, the aluminium alloy concatenation is stepped and is the current mode of ramp, and the articulated ladder material of aluminium alloy material preparation is lighter reduces the risk of transporting the installation stage, and the angle of each piece of mark time through the design has guaranteed personnel and has passed safety from top to bottom, uses the fixed movable articulated ladder of top stay structure simultaneously can ensure the integrality of corridor structure.

It should be noted that the terms like "upper", "lower", "left", "right", "front", "rear", and the like are also used for descriptive purposes only and are not intended to limit the scope of the utility model in which the utility model may be practiced, but rather the relative relationship of the terms may be altered or modified without materially altering the teachings of the utility model.

The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the utility model without departing from the principles thereof are intended to be within the scope of the utility model as set forth in the following claims.

Claims (10)

1. An adjustable ladder for corridor which characterized in that: comprises a top supporting column, a base (2) and a stepping device (1); the upper end of the base (2) is fixedly connected with the shoring column, and one side of the base (2) is hinged with the stepping device (1); the stepping device (1) comprises a plurality of stepping units, each stepping unit comprises two side connecting plates (11), connecting plates (12), pedals (14), two side supporting plates (15) and two spiral adjusting telescopic rods (16), the two side connecting plates (11) are vertically fixed at the left end and the right end of each connecting plate (12), the lower ends of the side connecting plates (11) are respectively and vertically fixed with the side supporting plates (15), the side supporting plates (15) are respectively arranged at one side opposite to the two side connecting plates (11), the connecting plates (12) are hinged with one end of each pedal (14), the left side and the right side of the lower end face of the other end of each pedal (14) are respectively hinged with the upper end of one spiral adjusting telescopic rod (16), and the lower ends of the spiral adjusting telescopic rods (16) are respectively hinged on the side supporting plates (15) at the left side and the right side; hinge holes are formed in the front end and the rear end of the side connecting plates (11), and each stepping unit is correspondingly hinged with each other through the hinge holes of the side connecting plates (11) on the two sides.

2. An adjustable ladder for a gallery as claimed in claim 1, wherein: the spiral adjusting telescopic rod (16) comprises an upper connecting screw, a lower connecting screw and a connecting sleeve (161); the upper end of the upper connecting screw rod is hinged with the lower end face of the pedal (14), the lower end of the lower connecting screw rod is hinged with the upper end face of the side supporting plate (15), double-direction internal threads are arranged in the connecting sleeve (161), and the connecting sleeve (161) is respectively in threaded connection with the upper connecting screw rod and the lower connecting screw rod.

3. An adjustable ladder for a gallery as claimed in claim 1, wherein: the stepping unit further comprises two rollers (17), and the two rollers (17) are symmetrically arranged on the lower end faces of the two side support plates (15) respectively.

4. An adjustable ladder for a gallery according to claim 3, wherein: the roller (17) adopts a roller with a locking structure.

5. An adjustable ladder for a gallery as claimed in claim 1, wherein: hinge structures (13) are adopted to hinge the connecting plates (12) and the pedals (14).

6. An adjustable ladder for a gallery as claimed in claim 1, wherein: the top support column comprises a bottom top support column (3), a middle top support column (4) and a top support column (5); the bottom supporting column (3) comprises a fixed seat (31) and a screw rod (33), a connecting shaft is fixed on the fixed seat (31), a through hole with internal threads is formed in the connecting shaft, the lower end of the screw rod (33) is in threaded connection with the connecting shaft, and the lower end of the fixed seat (31) is fixedly connected with the base (2); the lower end of the middle top supporting column (4) is provided with a threaded through hole, the middle top supporting column (4) is in threaded connection with the upper end of the screw rod (33) through the threaded through hole, and the upper end of the middle top supporting column (4) is fixedly clamped with the top supporting column (5); the threaded through hole of the middle supporting column (4) adopts internal threads opposite to the internal threads of the connecting shaft.

7. An adjustable ladder for a gallery as claimed in claim 6, wherein: the upper end of the top supporting column (5) is fixedly provided with a fixed block.

8. An adjustable ladder for a gallery as claimed in claim 6, wherein: a fixing nut (32) is fixed on a screw rod (33) between the bottom supporting column (3) and the middle supporting column (4).

9. An adjustable ladder for a gallery as claimed in claim 1, wherein: the base (2) is provided with a through hole which penetrates left and right.

10. An adjustable ladder for a gallery as claimed in claim 1, wherein: the number of the jacking posts is two.