CN213566401U

CN213566401U - Ladder for submersible

Info

Publication number: CN213566401U
Application number: CN202022102756.0U
Authority: CN
Inventors: 李澜涛; 敖琪
Original assignee: Shanghai Rainbow Fish Deep Sea Equipment Technology Co ltd
Current assignee: Shanghai Rainbow Fish Deep Sea Equipment Technology Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-06-29
Anticipated expiration: 2030-09-23

Abstract

The application discloses a ladder for a submersible. The ladder comprises: a ladder tube comprising a multi-section sleeve; stepping; a step baffle plate; the dampers are arranged at two ends of the first section of sleeve of the ladder pipe; fixing the ear plate; a limit plate, wherein the fixed ear plate and the limit plate are fixed to a hatch of the submersible; the tail part of the shaft rod is provided with an opening, wherein the first section of sleeve is connected with the fixed lug plate through the shaft rod, so that the ladder can rotate through the shaft rod; the blocking plug is used for closing the last section of sleeve of the ladder pipe; and a cotter pin inserted into the opening of the shaft. The ladder can be conveniently stretched, contracted and rotated, thereby being convenient to use and not influencing the activity space in the cabin. Meanwhile, the inconvenience that a movable ladder is adopted when people go in and out is also saved. The ladder of the application is very easy to assemble and manufacture, and is quite convenient to assemble and disassemble, and the reliability, the practicability and the convenience are obvious.

Description

Ladder for submersible

Technical Field

The present invention relates to a ladder, and more particularly, to a ladder installed in a manned cabin of a submersible.

Background

As is well known, a manned vehicle refers to a submersible device having underwater viewing and working capabilities, and is primarily used to perform difficult and dangerous tasks such as underwater exploration, seafloor development and salvage, and life saving.

The manned cabin of the manned submersible is a working and resting space for an underwater operation task performed by an underwater vehicle, and is generally designed to be a spherical cabin body with the diameter of about 2 m. The diver enters and exits the manned cabin through a circular hatch with a minimum diameter above the manned cabin. Because of the numerous equipment and limited movement space in the manned vehicle, the manned submersible is not provided with a fixed ladder in the vehicle, but a movable ladder is generally adopted. This results in that each time the diver enters or exits the cabin, he needs to hang down the mobile ladder by means of a crane on the mother ship and then fix it to the surrounding walls of the entrance/exit hatch of the manned cabin by means of hooks on the ladder. After the diver completely enters the manned cabin, the ladder is withdrawn from the hatch.

This eliminates the space for an inboard ladder, but is cumbersome and inconvenient to operate. In addition, linear, pedal-type conventional ladders are now mostly used. According to the actual field test measurement, when the diver enters and exits the cabin body through the ladder, the hip and the knees of the diver are limited by the size of the hatch, so that the height of each step is about 150-230 mm, and the pedals of the ladder and the knees of the diver are mutually influenced, thereby influencing the operation of the diver.

There are some folding type ladders in the prior art, but these ladders either only focus on convenient dismantlement, or only focus on the arrangement of anti-skidding otic placode and anti-skidding glue, do not have a ladder to give comprehensive consideration to all aspects' problem. In addition, some folding ladders can only be used in daily environment, and the problems that the space of the submersible vehicle is narrow and the actual operation space of the underwater vehicle is narrow are not considered, so that the folding ladders are difficult to use in the manned cabin of the submersible vehicle.

Therefore, there is a great need in the art for a ladder that can be used in a manned submersible that is small, easily stackable and usable.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

In order to solve the problem, the utility model provides a can use in the manned cabin of submersible, can overturn, flexible, small to easy to use's ladder.

This type of ladder comprises: ladder pipe, step, baffle of marking time, fixed otic placode, limiting plate, attenuator, axostylus axostyle, split pin and fender stopper. Wherein, the ladder pipe is formed by combining a plurality of sections of casing pipes. The fixed ear plate and the limiting plate are welded on the coaming of the manned cabin hatch. The first section of sleeve of ladder is connected with fixed otic placode through the axostylus axostyle. The disc type dampers are arranged at two ends of the sleeve, and the countersunk screws are connected with the fixed ear plates at two sides. The shaft tail is provided with an opening, and the cotter pin is inserted into the opening of the shaft tail. And the tail part of the cotter pin is pulled open to prevent the workpiece from falling off.

Each section of the casing is provided with an anti-skid step, and the anti-skid steps and the casing are fixed by welding or other methods known in the art. The free end of the step is fixed to the step baffle plate in a welding mode and the like, and the step baffle plate can prevent the foot from sliding out of the pedal in a bumpy environment. The stepping is installed in a staggered mode, and the distance between every two adjacent stepping is not larger than 230mm, preferably 150-230 mm.

To the accomplishment of the foregoing and related ends, the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed and the present description is intended to include all such aspects and their equivalents.

Drawings

So that the manner in which the above recited features of the present application can be understood in detail, a more particular description of the disclosure briefly summarized above may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this application and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects.

In the drawings:

fig. 1 is a side view illustrating a ladder according to an embodiment of the present invention inside a passenger compartment body;

fig. 2 is a front view illustrating a ladder inside a manned cabin body according to an embodiment of the present invention;

fig. 3 is a top view illustrating a ladder according to an embodiment of the present invention in a folded state inside a passenger compartment body;

fig. 4 is a front view illustrating a ladder according to an embodiment of the present invention in a deployed state;

fig. 5 is a side view illustrating a ladder according to an embodiment of the present invention in a deployed state;

fig. 6 is a front view illustrating a ladder according to an embodiment of the present invention in a folded state;

fig. 7 is a left side view illustrating a ladder according to an embodiment of the present invention in a folded state; and

fig. 8 is a top view illustrating a ladder according to an embodiment of the present invention in a folded state.

Detailed Description

The detailed description set forth below in connection with the appended drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details to provide a thorough understanding of the various concepts. It will be apparent, however, to one skilled in the art that these concepts may be practiced without these specific details. In some instances, well known components are shown in block diagram form in order to avoid obscuring such concepts.

It is to be understood that other embodiments will be evident based on the present disclosure, and that system, structural, process, or mechanical changes may be made without departing from the scope of the present disclosure.

Fig. 1 and 2 illustrate a side view and a front view, respectively, of a ladder inside a passenger compartment body according to an embodiment of the invention.

Referring to fig. 1 and 2, a collapsible ladder of this type according to embodiments of the present application is placed on the coaming of a passenger compartment hatch in various ways well known to those skilled in the art. As can be seen in the figures, the main body portion of the ladder (i.e., the ladder tube portion) is assembled from a plurality of sections of casing, with each section of casing being fitted with an anti-skid step, which is secured to the casing by welding or in various other ways known in the art. The free end of the step is secured to the step stop and the other end is secured to the main body portion of the ladder by welding or other means known in the art. The steps are installed in a staggered mode, and as can be seen from fig. 2, the distance between two adjacent steps should not be greater than 230mm, and preferably ranges from 150mm to 230 mm.

Fig. 3 illustrates a top view of a collapsible ladder according to an embodiment of the application in a collapsed state inside a passenger cabin body. As can be seen from fig. 3, after the ladder is folded by the diver, the occupied space is very small and is basically near the hatch, and the movement of the diver in the manned cabin is not influenced at all.

Fig. 4 illustrates a front view of a ladder according to an embodiment of the present invention in an extended state; fig. 5 illustrates a side view of a ladder according to an embodiment of the invention in a deployed state; fig. 6 is a front view illustrating a ladder according to an embodiment of the present invention in a folded state; fig. 7 illustrates a left side view of a ladder in a collapsed state according to an embodiment of the present invention; and figure 8 illustrates a top view of a ladder in a collapsed state according to an embodiment of the present invention.

The specific structure of the collapsible ladder according to the present application can be clearly shown from fig. 4 to 8. Fig. 4 to 8 illustrate views of various angles when a ladder according to an embodiment of the present invention is in an unfolded state and a folded state, respectively.

As clearly shown in fig. 4 to 8, a ladder according to an embodiment of the present invention mainly includes the following components:

ladder pipe 1, step 2, baffle 3, attenuator 4, fixed otic placode 5, limiting plate 6, axostylus axostyle 7, stop plug 8 and split pin 9 mark time.

Wherein, the ladder tube 1 is formed by combining a plurality of sections of casing tubes. The step 2 can be improved according to the actual size to meet the needs of the diver. The stepping baffle 3 has an anti-skid function, so that the feet of an underwater vehicle can be prevented from sliding out of the stepping 2 under a bumpy environment, and the safety of the underwater vehicle in and out is ensured. Disc dampers 4 are installed at both ends of the first section of the casing pipe and are connected with fixing lugs 5 at both sides by countersunk screws, and when the ladder is rotated to a horizontal position, or in a horizontal position, the dampers 4 can be prevented from continuing to rotate downward due to the gravity thereof. The fixed ear plates 5 and the limit plates 6 are welded to the coaming of the passenger compartment hatch (see fig. 2 above). The first section of the sleeve of the ladder is connected with the fixed ear plate 5 by a shaft 7, the ladder being able to rotate around a swivel bearing, i.e. the shaft 7. The position-limiting plate 6 is used to prevent the ladder from being restricted from just being in the vertical position without continuing to rotate when the ladder needs to be moved from the horizontal position to the vertical position, so that the work is unstable. The rear part of the shaft 7 is bored and a cotter pin 9 is inserted into the bore of the rear part of the shaft 7. And, the tail of the cotter pin 9 is pulled open to prevent the workpiece from falling off. The stop 8 keeps the last section of casing in a closed configuration.

Also, as shown in fig. 4 and 5, the step plate 2 is located at the bottom of each section of the sleeve, and one side of the step plate 2 may be welded or fixed to the ladder tube by bolts or other means known in the art according to the material of the step plate.

The collapsible ladder for a submersible of the present application is described in detail above with reference to the accompanying drawings. This type of ladder has outstanding technical features and significant advantages compared to the prior art, which uses movable ladders in the access cabin. For example, the ladder may be secured to a manned cabin body, thereby saving time to move the ladder in and out each time, and thus facilitating the operation of the diver.

The working principle of the ladder of the present application is further described below.

After the ladder is installed, namely fixed to the manned cabin body, the ladder can be pushed down, rotated and stretched to be in a vertical position, so that a diver can directly enter the manned cabin through the ladder installed beside the access hatch without carrying an additional movable ladder.

After all personnel enter the cabin body, all sections of sleeves, steps and step baffle plates of the ladder can be completely contracted, and the contracted ladder is rotated to the position of the hatch cover by an underwater vehicle in a push-up mode, namely, the ladder is in a parallel state with the hatch cover, so that the space utilization is reduced to the maximum extent. Because the shaft is connected to the disc damper and the disc damper provides a damping torque force greater than the force of gravity rotating the ladder down about the shaft, the ladder does not rotate. Of course, before pushing up, the stop plug on the last section of the casing pipe of the ladder should be installed in advance.

When the submersible finishes the operation task, floats out of the water surface and is lifted to the mother ship, the hatch cover of the manned cabin of the submersible is opened, the diver in the cabin pulls down the ladder to the position of the limiting plate at the moment, the stop plug on the last section of sleeve is taken out, the ladder is stretched, and the diver can walk out of the manned cabin through the ladder and return to the mother ship.

The collapsible ladder for a submersible to which the present application relates is described in sufficient detail above with reference to the accompanying drawings. After reading the above text, those skilled in the art will fully appreciate that the ladder described herein can be conveniently extended, retracted and rotated to facilitate use without affecting the space occupied by the diver.

Also, since this type of ladder can be easily and conveniently fixed to the position of the hatch of the man compartment of the submersible, the inconvenience of carrying a movable ladder in and out is eliminated. The ladder described in the application is very easy to assemble and manufacture, is quite convenient to assemble and disassemble, has obvious reliability, practicability and convenience, can be used by a diver in a great convenience when entering and exiting a hatch, and has very good practicability.

The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein, but is to be accorded the full scope consistent with the language claims, wherein reference to an element in the singular is not intended to mean "one and only one" (unless specifically so stated) but rather "one or more". The term "some" means one or more unless specifically stated otherwise. A phrase referring to "at least one of a list of items refers to any combination of those items, including a single member. By way of example, "at least one of a, b, or c" is intended to encompass: at least one a; at least one b; at least one c; at least one a and at least one b; at least one a and at least one c; at least one b and at least one c; and at least one a, at least one b, and at least one c. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. Moreover, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in the claims.

Claims

1. A ladder for a submersible, comprising:

a ladder tube comprising a multi-section sleeve;

stepping;

a step baffle plate;

dampers mounted at both ends of a first section of the sleeve of the ladder tube;

fixing the ear plate;

a retainer plate, wherein the retainer plate and the retainer plate are secured to a hatch of the submersible;

a shaft having an opening at a rear thereof, wherein the first section of the sleeve is connected to the fixing lug through the shaft such that the ladder is rotated by the shaft;

the blocking plug is used for closing the last section of sleeve of the ladder pipe; and

a cotter pin inserted into an aperture of the shaft.

2. A ladder as set forth in claim 1 wherein said damper is a disc damper.

3. A ladder as claimed in claim 1, characterized in that the distance between adjacent connecting sleeves of the ladder tubes is less than 230 mm.

4. A ladder as claimed in claim 3, characterized in that the distance between adjacent connecting tubes of the ladder tubes is more than 150 mm.

5. A ladder as set forth in claim 1 wherein said damper prevents continued downward rotation when said ladder is rotated to, or in, a horizontal position.

6. A ladder as set forth in claim 1 wherein said ladder is brought into an upright position for use by pushing down, rotating and pulling, and when used, is brought into a horizontal position and placed in a hatch position by retracting, rotating and pushing up.

7. A ladder as set forth in claim 6 wherein said stop plate is adapted to prevent continued rotation of said ladder when said ladder is rotated from a horizontal position to a vertical position for use.

8. A ladder as set forth in claim 1 wherein said first length of tubing is connected to said fixed lug by said shaft such that said ladder rotates about said shaft.