Manhole access aid and method

Abstract

The present application relates to the technical fields of ship engineering, in particular to a kind of manhole auxiliary device and manhole method, manhole auxiliary device includes ladder and first connecting piece;Ladder is arranged below manhole, ladder has first support column and second support column arranged in parallel and spaced, and the lower end of first support column and second support column is arranged on bottom deck;One end of first connecting piece is hinged in the upper end of first support column, and the other end of first connecting piece is connected to top deck and located at one side of manhole;The upper end of second support column is detachably connected to top deck and located at the other side of manhole;Second support column is detached from top deck, and ladder can be rotated to one side of manhole, to avoid that ladder affects the passage of equipment or personnel below manhole.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship engineering, in particular to an auxiliary device for entering and exiting a manhole and a method for entering and exiting a manhole. BACKGROUND

[0002] The manhole on the deck of a ship is mainly used as a maintenance passage between the cabin and each deck. When the maintenance personnel are maintaining, they need to enter the manhole through an auxiliary device such as a ladder. After entering the manhole, the ladder needs to be left in place for the maintenance personnel to return after completing the maintenance. Due to structural limitations, the installation position of part of the ladder is on the passage in the cabin. The passage in the cabin is often narrow, and the ladder occupies the space below the manhole for a long time, which is not conducive to the smooth passage of personnel or equipment in the cabin. SUMMARY

[0003] The technical problem to be solved by the present application is that the existing auxiliary device for entering and exiting a manhole needs to occupy the space below the manhole, which is not conducive to the smooth passage of personnel or equipment in the cabin.

[0004] In order to solve the above technical problems, the purpose of the present application is to provide an auxiliary device for entering and exiting a manhole for assisting personnel to enter and exit the manhole, the manhole being arranged on a top deck, the auxiliary device for entering and exiting a manhole comprising a ladder and a first connecting piece; the ladder is arranged below the manhole, the ladder has first and second support columns arranged in parallel and at intervals, and the lower ends of the first and second support columns are located on a bottom deck;

[0005] One end of the first connecting piece is hinged to the upper end of the first support column, and the other end of the first connecting piece is connected to the top deck and located on one side of the manhole;

[0006] The upper end of the second support column is detachably connected to the top deck and located on the other side of the manhole;

[0007] The second support column is detached from the top deck, and the ladder can be rotated to one side of the manhole.

[0008] As a preferred solution, the auxiliary device for entering and exiting a manhole further comprises a second connecting piece, one end of the second connecting piece is hinged to the lower end of the first support column, and the hinge axis of the second connecting piece is coaxial with the hinge axis of the first connecting piece; the other end of the second connecting piece is connected to the bottom deck.

[0009] As a preferred solution, the auxiliary device for entering and exiting a manhole further comprises a third connecting piece, a fourth connecting piece and a first fastener;

[0010] The first end of the third connecting piece is fixed to the upper end of the second supporting column, the first end of the fourth connecting piece is connected to the top deck, and the second end of the third connecting piece and the second end of the fourth connecting piece are fastened by the first fastener.

[0011] As a preferred solution, one of the second end of the third connecting piece and the second end of the fourth connecting piece has a first threaded hole, and the other has a first rectangular hole, the length direction of the first rectangular hole is arranged perpendicular to the length direction of the second supporting column, and the threaded end of the first fastener passes through the first rectangular hole and is screwed into the first threaded hole.

[0012] As a preferred solution, the access hole auxiliary device further comprises a connecting rope, one end of the connecting rope is connected to the non-threaded end of the first fastener, and the other end of the connecting rope is connected to the third connecting piece or the upper end of the second supporting column.

[0013] As a preferred solution, the first fastener is a butterfly bolt.

[0014] As a preferred solution, the access hole auxiliary device further comprises a fifth connecting piece, a sixth connecting piece and a second fastener.

[0015] The first end of the fifth connecting piece is fixed to the lower end of the second supporting column, the first end of the sixth connecting piece is connected to the bottom deck, and the second end of the fifth connecting piece and the second end of the sixth connecting piece are fastened by the second fastener.

[0016] As a preferred solution, one of the second end of the fifth connecting piece and the second end of the sixth connecting piece has a second threaded hole, and the other has a second rectangular hole, the length direction of the second rectangular hole is arranged perpendicular to the length direction of the second supporting column, and the second fastener passes through the second rectangular hole and is screwed into the second threaded hole.

[0017] As a preferred solution, the second fastener is a butterfly bolt.

[0018] An access hole method, wherein the access hole is provided below the access hole auxiliary device described above, and the access hole method comprises the following steps:

[0019] When a first person on the bottom deck needs to enter the upper space above the access hole, the first person enters the upper space above the access hole by climbing through the access hole via the ladder;

[0020] When a second person or equipment on the bottom deck needs to pass below the access hole, the upper end of the second supporting column is detached from the top deck, and the ladder is rotated so that the ladder is turned to one side of the access hole;

[0021] When the first person needs to return to the bottom deck, the first person's arms pass through the manhole, turn the ladder to below the manhole, connect the upper end of the second support column to the top deck; the first person passes through the manhole and returns to the bottom deck through the ladder.

[0022] Compared with the prior art, the beneficial effects of the present application are that:

[0023] The access manhole auxiliary device of the present application comprises a ladder and a first connecting piece; the ladder is arranged below the manhole, the ladder has first support columns and second support columns arranged in parallel and at intervals, and the lower ends of the first support columns and the second support columns are arranged on the bottom deck; one end of the first connecting piece is hinged to the upper end of the first support column, and the other end of the first connecting piece is connected to the top deck and located on one side of the manhole; the upper end of the second support column is detachably connected to the top deck and located on the other side of the manhole; when the second support column is detached from the top deck, the ladder can be turned to one side of the manhole, so as to avoid the influence of the ladder on the passage of equipment or personnel below the manhole. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The figure is a structural schematic diagram of the access manhole auxiliary device of the present application when the ladder is located below the manhole;

[0025] Figure 2 The figure is a structural schematic diagram of the access manhole auxiliary device of the present application when the ladder is turned to one side of the manhole; Figure 1 The figure is an enlarged view of point C in the figure;

[0026] Figure 3 The figure is an enlarged view of point D in the figure; Figure 1 The figure is an enlarged view of point D in the figure;

[0027] Figure 4 The figure is a structural schematic diagram of the access manhole auxiliary device of the present application when the ladder is turned to one side of the manhole;

[0028] In the figure, 100 is a top deck, 101 is a manhole, 200 is a bottom deck, 1 is a ladder, 11 is a first support column, 12 is a second support column, 13 is a step, 21 is a first connecting piece, 22 is a second connecting piece, 23 is a third connecting piece, 231 is a first rectangular hole, 24 is a fourth connecting piece, 241 is a first threaded hole, 25 is a fifth connecting piece, 251 is a second rectangular hole, 26 is a sixth connecting piece, 261 is a second threaded hole, 31 is a first fastener, 32 is a second fastener, 41 is a first connecting rope, and 42 is a second connecting rope. DETAILED DESCRIPTION

[0029] The specific embodiments of the present application are described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the present application but are not used to limit the scope of the present application.

[0030] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. It should be understood that the terms "first", "second", and the like are used to describe various information in the present application, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, the "first" information can also be referred to as "second" information without departing from the scope of the present application, and similarly, the "second" information can also be referred to as "first" information.

[0031] The manhole auxiliary device of the present application is used for assisting personnel to enter and exit the manhole 101, which is arranged on the top deck 100, as shown in the drawings. Figures 1 to 4 The preferred embodiment of the manhole auxiliary device of the present application comprises a ladder 1 and a first connecting piece 21; the ladder 1 is arranged below the manhole 101, the ladder 1 has first support columns 11 and second support columns 12 arranged in parallel and at intervals, a plurality of steps 13 are sequentially and fixedly arranged at intervals from top to bottom between the first support columns 11 and the second support columns 12, and the lower ends of the first support columns 11 and the second support columns 12 are arranged on the bottom deck 200; one end of the first connecting piece 21 is hingedly connected to the upper end of the first support column 11, the other end of the first connecting piece 21 is connected to the top deck 100 and located on one side of the manhole 101; the upper end of the second support column 12 is detachably connected to the top deck 100 and located on the other side of the manhole 101; after the upper end of the second support column 12 is detached from the top deck 100, the ladder 1 can be rotated to one side of the manhole 101. When a first person located on the bottom deck 200 needs to enter the upper space above the manhole 101 through the manhole 101, the first person passes through the manhole 101 by the ladder 1 and can enter the upper space above the manhole 101; when a second person or equipment located on the bottom deck 200 needs to pass from below the manhole 101, the upper end of the second support column 12 is detached from the top deck 100, the ladder 1 is rotated, and the ladder 1 is turned to one side of the manhole 101; thereby avoiding the obstruction of the ladder 1 to the passing space below the manhole 101. When the first person needs to return to the bottom deck 200, the arms of the first person pass through the manhole 101, the ladder 1 is rotated to below the manhole 101, and the upper end of the second support column 12 is connected to the top deck 100; the first person passes through the manhole 101 and goes down to the bottom deck 200 by the ladder 1, and the first person entering the upper space does not need the help of the personnel located on the bottom deck 200 and can reset the ladder 1 below the manhole 101 by himself, so that a single person can complete the entering and exiting of the manhole 101, which is convenient to use and saves manpower.

[0032] In order to ensure the stability of the ladder 1, the access hole auxiliary device further comprises a second connecting piece 22 in the embodiment, one end of the second connecting piece 22 is hinged to the lower end of the first supporting column 11, and the hinge shaft of the second connecting piece 22 is coaxial with the hinge shaft of the first connecting piece 21; the other end of the second connecting piece 22 is connected to the bottom deck 200. Specifically, the ladder 1 is fixed by three points, which ensures that the ladder 1 can remain stable on the ship body. In the embodiment, the second connecting piece 22 and the first supporting column 11, and the first connecting piece 21 and the first supporting column 11 are connected by an oil injection hinge.

[0033] The access hole auxiliary device further comprises a third connecting piece 23, a fourth connecting piece 24 and a first fastener 31; the first end of the third connecting piece 23 is fixed to the upper end of the second supporting column 12, the first end of the fourth connecting piece 24 is connected to the top deck 100, and the second end of the third connecting piece 23 and the second end of the fourth connecting piece 24 are fastened by the first fastener 31. Specifically, the third connecting piece 23 is a first L-shaped plate, the first L-shaped plate has a first connecting arm perpendicular to the second supporting column 12 and a second connecting arm parallel to the second supporting column 12, the first connecting arm is welded to the upper end of the second supporting column 12, and the first connecting arm is welded to the side of the second supporting column 12 away from the first supporting column 11; the fourth connecting piece 24 is a straight plate arranged vertically, the upper end of the fourth connecting piece 24 is welded to the lower end of the upper deck, the lower end of the fourth connecting piece 24 is in contact with the second connecting arm, and the first fastener 31 is arranged in the lower end of the fourth connecting piece 24 and the second connecting arm, so that the fourth connecting piece 24 and the second connecting arm can be fixed or separated by installing the first fastener 31, which is convenient to operate.

[0034] Further, one of the second end of the third connecting piece 23 and the second end of the fourth connecting piece 24 has a first threaded hole 241, and the other has a first rectangular hole 231, the length direction of the first rectangular hole 231 is perpendicular to the length direction of the second supporting column 12, and the threaded end of the first fastener 31 passes through the first rectangular hole 231 and is screwed into the first threaded hole 241. The arrangement of the first rectangular hole 231 can reduce the position accuracy requirement of the first threaded hole 241 of the access hole auxiliary device of the present application, and reduce the processing cost of the access hole auxiliary device of the present application. Specifically, in the embodiment, the first rectangular hole 231 is arranged on the second connecting arm, and the first threaded hole 241 is arranged on the fourth connecting piece 24.

[0035] In the embodiment, the first fastener 31 is a butterfly bolt, which is convenient to hold, and can be disassembled without the aid of tools, so that the first fastener 31 can be disassembled conveniently, and the butterfly bolt is a standard part, which reduces the processing cost of the access hole auxiliary device of the present application.

[0036] In the embodiment, the access hole auxiliary device further comprises a connecting rope, one end of the connecting rope is connected to the non-threaded end of the first fastener 31, and the other end of the connecting rope is connected to the upper end of the second support column 12 or the third connecting piece 23. Specifically, the second person on the bottom deck of the cabin disconnects the first fastener 31 from the fourth connecting piece 24, and then the first fastener 31 is connected to the upper end of the second support column 12 by the connecting rope. When the first person on the upper space needs to reset the ladder 1, the first fastener 31 can be obtained by pulling the connecting rope, thereby avoiding the inconvenience caused by the loss of the first fastener 31.

[0037] In order to further improve the stability of the ladder 1 on the bottom deck 200 and the top deck 100, in the embodiment, the access hole auxiliary device further comprises a fifth connecting piece 25, a sixth connecting piece 26, and a second fastener 32; the first end of the fifth connecting piece 25 is fixed to the lower end of the second support column 12, the first end of the sixth connecting piece 26 is connected to the bottom deck 200, and the second end of the fifth connecting piece 25 and the second end of the sixth connecting piece 26 are fastened by the second fastener 32. After the first person enters the upper space through the ladder 1, if the second person on the bottom deck 200 needs to pass from below the access hole 101, the second person can remove the first fastener 31 and the second fastener 32, and then rotate the ladder 1. When the first person in the upper space needs to return to the bottom deck 200, the first fastener 31 is only needed to connect the third connecting piece 23 and the fourth connecting piece 24, so that the ladder 1 is connected to the bottom deck 200 and the top deck 100 by three-point fixation, thereby ensuring that the first person can smoothly return to the bottom deck 200.

[0038] In the embodiment, one of the second end of the fifth connecting piece and the second end of the sixth connecting piece 26 has a second threaded hole 261, and the other has a second rectangular hole 251, the length direction of the second rectangular hole 251 is perpendicular to the length direction of the second support column 12, and the second fastener 32 passes through the second rectangular hole 251 and is screw-fitted in the second threaded hole 261. The second fastener 32 is a butterfly bolt. In the embodiment, the second rectangular hole 251 is arranged on the fifth connecting piece 25, and the second threaded hole 261 is arranged on the sixth connecting piece 26. The second fastener 32 is connected with a second connecting rope 42, and the other end of the second connecting rope 42 is connected to the lower end of the fifth connecting piece 25 or the second support column 12.

[0039] An embodiment of a method for accessing an access hole, the lower part of the access hole 101 is provided with the above-mentioned access hole auxiliary device, and the method for accessing the access hole 101 comprises the following steps:

[0040] When the first person on the bottom deck 200 needs to enter the upper space above the access hole 101 through the access hole 101, the first person passes through the access hole 101 by the ladder 1 and enters the upper space above the access hole 101;

[0041] When the second person or equipment on the bottom deck 200 needs to pass below the manhole 101, the upper end of the second support column 12 is detached from the top deck 100, and the ladder 1 is rotated to the side of the manhole 101.

[0042] When the first person needs to return to the bottom deck 200, the first person's arms pass through the manhole 101, the ladder 1 is rotated below the manhole 101, and the upper end of the second support column 12 is connected to the top deck 100; the first person passes through the manhole 101 and goes down to the bottom deck 200 through the ladder 1.

[0043] Wherein, when the first person connects the upper end of the second support column 12 to the top deck 100, the first fastener 31 is obtained by the first pulling rope, and then the third connecting piece 23 and the fourth connecting piece 24 are fastened by the first fastener 31.

[0044] In summary, the access manhole auxiliary device of the present application comprises a ladder 1 and a first connecting piece 21; the ladder 1 is arranged below the manhole 101, the ladder 1 has first support column 11 and second support column 12 arranged in parallel and spaced apart, the lower end of the first support column 11 and the second support column 12 are arranged on the bottom deck 200; one end of the first connecting piece 21 is hinged to the upper end of the first support column 11, the other end of the first connecting piece 21 is connected to the top deck 100 and located on one side of the manhole 101; the upper end of the second support column 12 is detachably connected to the top deck 100 and located on the other side of the manhole 101; the second support column 12 is detached from the top deck 100, and the ladder 1 is rotated to the side of the manhole 101, so as to avoid the influence of the ladder 1 on the passing of equipment or personnel below the manhole 101.

[0045] The above is only the preferred embodiment of the present application, it should be noted that for ordinary skilled in the art, without departing from the technical principles of the present application, can make several improvements and substitutions, these improvements and substitutions should also be considered as the protection scope of the present application.

Claims

1. A manhole access assisting device for assisting a person to access a manhole (101) provided on a top deck (100), characterized in that, The manhole auxiliary device comprises a ladder (1) and a first connecting member (21); the ladder (1) is arranged below the manhole (101), and the ladder (1) has first support columns (11) and second support columns (12) arranged in parallel and at intervals, and the lower ends of the first support columns (11) and the second support columns (12) are located on a bottom deck (200); one end of the first connecting member (21) is hingedly connected to the upper end of the first support column (11), and the other end of the first connecting member (21) is connected to the top deck (100) and located on one side of the manhole (101); the upper end of the second support column (12) is detachably connected to the top deck (100) and located on the other side of the manhole (101); the second support column (12) is detached from the top deck (100), and the ladder (1) can be rotated to one side of the manhole (101); the manhole auxiliary device further comprises a second connecting member (22), one end of the second connecting member (22) is hingedly connected to the lower end of the first support column (11), and the hinging shaft of the second connecting member (22) is coaxial with the hinging shaft of the first connecting member (21); the other end of the second connecting member (22) is connected to the bottom deck (200); the manhole auxiliary device further comprises a third connecting member (23), a fourth connecting member (24) and a first fastener (31); the first end of the third connecting member (23) is fixed to the upper end of the second support column (12), the first end of the fourth connecting member (24) is connected to the top deck (100), and the second end of the third connecting member (23) and the second end of the fourth connecting member (24) are fastened by the first fastener (31).

2. The manhole access aid of claim 1, wherein, One of the second end of the third connecting member and the second end of the fourth connecting member (24) has a first threaded hole (241), and the other one has a first rectangular hole (231), the length direction of the first rectangular hole (231) is perpendicular to the length direction of the second support column (12), and the threaded end of the first fastener (31) passes through the first rectangular hole (231) and is threadedly assembled in the first threaded hole (241).

3. The manhole access aid of claim 1, wherein, The manhole auxiliary device further comprises a connecting rope, one end of the connecting rope is connected to the non-threaded end of the first fastener (31), and the other end of the connecting rope is connected to the upper end of the third connecting member (23) or the second support column (12).

4. The manhole access aid of claim 1, wherein, The first fastener (31) is a butterfly bolt.

5. The manhole access aid of claim 1, wherein, The manhole auxiliary device further comprises a fifth connecting member (25), a sixth connecting member (26) and a second fastener (32); the first end of the fifth connecting member (25) is fixed to the lower end of the second support column (12), the first end of the sixth connecting member (26) is connected to the bottom deck (200), and the second end of the fifth connecting member (25) and the second end of the sixth connecting member (26) are fastened by the second fastener (32).

6. The manhole access aid of claim 5, wherein, One of the second end of the fifth connecting piece and the second end of the sixth connecting piece (26) has a second threaded hole (261), and the other has a second rectangular hole (251), the length direction of the second rectangular hole (251) is perpendicular to the length direction of the second support column (12), and the second fastener (32) passes through the second rectangular hole (251) and is screwed into the second threaded hole (261).

7. The manhole access aid of claim 6, wherein, The second fastener (32) is a butterfly bolt.

8. A method of accessing a manhole, characterized by, The manhole (101) is provided below with the access manhole auxiliary device of any one of claims 1 to 7, and the access manhole method comprises the following steps: When the first personnel located on the bottom deck (200) need to enter the upper space above the manhole (101) through the manhole (101), the first personnel pass through the manhole (101) by the ladder (1) and enter the upper space; When the second personnel or equipment located on the bottom deck need to pass below the manhole (101), the upper end of the second support column (12) is detached from the top deck (100), the ladder (1) is rotated, and the ladder (1) is turned to one side of the manhole (101); When the first personnel need to return to the bottom deck (200), the arms of the first personnel pass through the manhole (101), the ladder (1) is rotated below the manhole (101), the upper end of the second support column (12) is connected to the top deck (100), and the first personnel pass through the manhole (101) and return to the bottom deck (200) through the ladder (1).

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