阅读说明：本技术 一种用于船舶狭窄空间内的折叠直梯 (A folding vertical ladder for in boats and ships narrow space ) 是由 田宝辉 王玉超 季丽华 石胜娟 于 2021-06-24 设计创作，主要内容包括：本发明公开了一种用于船舶狭窄空间内的折叠直梯,包括梯架、铰接固定在梯架侧端面上的连接板、以及铰接固定在连接板端部的用以与船体结构相固定的固定脚,所述连接板的朝向固定脚一侧的上边角设置成倒圆角,连接板上开设有第一定位孔,第一定位孔的下方固定有锁定组件,梯架上开设有与第一定位孔相对应的第二定位孔。本发明的直梯不使用时可折叠起来,以使船舶通道距离达到600mm,能够满足船员的正常通行需求。(The invention discloses a folding vertical ladder used in a narrow space of a ship, which comprises a ladder frame, a connecting plate hinged and fixed on the side end face of the ladder frame, and fixing feet hinged and fixed on the end part of the connecting plate and used for fixing with a ship body structure, wherein the upper corner of one side of the connecting plate, which faces towards the fixing feet, is provided with a fillet, the connecting plate is provided with a first positioning hole, a locking assembly is fixed below the first positioning hole, and the ladder frame is provided with a second positioning hole corresponding to the first positioning hole. The vertical ladder can be folded when not in use, so that the distance of a ship channel reaches 600mm, and the normal passing requirement of crews can be met.)

1. A folding vertical ladder used in a narrow space of a ship is characterized by comprising a ladder frame, a connecting plate hinged and fixed on the side end face of the ladder frame, and fixing feet hinged and fixed on the end part of the connecting plate and used for fixing with a ship body structure, wherein the upper corner of one side of the connecting plate, which faces towards the fixing feet, is provided with a fillet, the connecting plate is provided with a first positioning hole, a locking assembly is fixed below the first positioning hole, the ladder frame is provided with a second positioning hole,

when the ladder frame moves upwards to rotate the connecting plate from the horizontal state to the vertical state, the first positioning hole is just overlapped with the second positioning hole so that the locking assembly is inserted, thereby locking the folding vertical ladder in the folding state.

2. The folding ladder of claim 1, wherein the locking assembly comprises a wire rope fixed to the connecting plate and a locking bolt fixed to an end of the wire rope.

3. The folding ladder of claim 2, wherein the locking bolt is a marine tongue bolt.

4. The folding vertical ladder for ships in narrow spaces as claimed in claim 1, wherein the fixing legs are composed of a complex plate fixed on the ship body structure and two eye plates vertically fixed on the complex plate, the two eye plates are arranged on both sides of the connecting plate and are hinged and fixed with the connecting plate through pin shaft assemblies, and the connecting plate is also hinged and fixed with the ladder frame through pin shaft assemblies.

5. The folding ladder of claim 4, wherein the pin shaft assembly comprises a pin shaft, a washer and a perforated pin inserted in the pin shaft.

6. The folding vertical ladder for use in a ship narrow space according to claim 1 or 4, wherein the ladder frame is composed of two vertically arranged uprights and a plurality of steps connected between the two uprights.

7. The folding vertical ladder for the ship in the narrow space as claimed in claim 6, wherein the vertical rods are made of flat steel, and the steps are made of square steel.

Technical Field

The invention relates to the technical field of ship construction, in particular to a folding vertical ladder used in a narrow space of a ship.

Background

In the ship design and construction process, a plurality of passages such as a passing passage, a maintenance passage, an operation passage and the like can be involved, and according to the requirement of ship field specifications, the clear space of the passages is ensured to be more than 600mm so as to ensure the safety of personnel. However, in some extreme cases, the clear space of the passage cannot be guaranteed to reach more than 600mm due to the influence of factors such as the design form of the hull structure and the size of equipment.

Disclosure of Invention

In view of the above, the present invention provides a foldable vertical ladder for use in a narrow space of a ship, which solves the above mentioned problems in the prior art.

A folding vertical ladder used in a narrow space of a ship comprises a ladder frame, a connecting plate hinged and fixed on the side end face of the ladder frame, and fixing feet hinged and fixed on the end part of the connecting plate and used for being fixed with a ship body structure, wherein the upper corner of the connecting plate facing one side of the fixing feet is arranged into a fillet, a first positioning hole is arranged on the connecting plate, a locking assembly is fixed below the first positioning hole, a second positioning hole is arranged on the ladder frame,

when the ladder frame moves upwards to rotate the connecting plate from the horizontal state to the vertical state, the first positioning hole is just overlapped with the second positioning hole so that the locking assembly is inserted, thereby locking the folding vertical ladder in the folding state.

Preferably, the locking assembly comprises a steel cable fixed on the connecting plate and a locking bolt fixed at the tail end of the steel cable.

Preferably, the locking bolt is a marine bolt with a tongue.

Preferably, the fixed foot comprises a compound plate fixed on the hull structure and two eye plates vertically fixed on the compound plate, the two eye plates are arranged on two sides of the connecting plate and are hinged and fixed with the connecting plate through pin shaft assemblies, and the connecting plate is hinged and fixed with the ladder frame through the pin shaft assemblies.

Preferably, the pin assembly includes a pin, a washer, and a perforated pin inserted in the pin.

Preferably, the ladder rack is composed of two upright posts arranged vertically and a plurality of steps connected between the two upright posts.

Preferably, the upright posts are made of flat steel, and the steps are made of square steel.

The invention has the beneficial effects that:

1. the invention provides a folding straight ladder which can be used in a narrow space of a ship, the straight ladder can be folded when not in use, so that the distance of a ship channel reaches 600mm, the normal passing requirement of a crew can be met, and the folding straight ladder has the advantages of light weight, high strength, corrosion resistance, easiness in operation, high safety and the like, and is convenient to convert between a working state and a storage state.

2. The invention can be used in the fields of ships, civil building construction, industrial factory building design and the like, and has wide application range and strong universality.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of the working state of the folding vertical ladder of the invention.

Fig. 2 is a schematic view of the folded state of the folding vertical ladder of the invention.

Fig. 3 is a top view of the folding vertical ladder of the invention in an operating state.

Fig. 4 is a schematic view of the folding vertical ladder of the invention from the working state to the folding state.

Fig. 5 is a schematic view of a connection plate.

Fig. 6 is a schematic view showing an operation state in which the folding vertical ladder of the present invention is mounted on a hull structure.

Fig. 7 is a schematic view of the folded state of the folding vertical ladder of the present invention mounted on a hull structure.

The reference numerals in the figures have the meaning:

the device comprises a ladder frame 1, a step 2, a connecting plate 3, an eye plate 4, a compound plate 5, a hull structure 6, a gasket 7, a cotter pin 8, a pin shaft 9, a locking bolt 10, a steel wire rope 11, a vertical rod 12, a first positioning hole 13, a second positioning hole 14 and ship equipment 15.

Detailed Description

For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected" and "fixed" are used in a broad sense, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described with reference to the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

Because some equipment is required to be operated on the hull structure, and another ship mooring equipment is arranged on the main deck of the hull, if a conventional vertical ladder is installed, the channel distance is only about 500mm, and the standard requirement of ship channel class cannot be met, therefore, the invention provides the folding vertical ladder for the ship in the narrow space, and the vertical ladder can be folded when not used, so that the channel distance of the ship reaches 600mm, and the normal passing requirement of a crew is met.

The invention relates to a folding vertical ladder used in a narrow space of a ship, which comprises a ladder frame 1, a connecting plate 3 hinged and fixed on the end surface of the ladder frame 1, and fixing feet hinged and fixed on the end part of the connecting plate 3 and used for being fixed with a ship body structure 6.

The ladder frame 1 is a main structure of a folding vertical ladder and is composed of two vertical upright rods 12 and a plurality of steps 2 connected between the two upright rods 12. In this embodiment, the upright rods 12 are made of flat steel, the steps 2 are made of square steel, a plurality of rhombic holes are formed in the left vertical flat steel and the right vertical flat steel, the square steel serving as the steps 2 is inserted into the rhombic holes, two end parts of the square steel extend out of the flat steel by 5mm, and the joints of the square steel and the flat steel are welded and fixed.

The both ends of connecting plate 3 are articulated fixedly through round pin axle subassembly and ladder frame 1 and fixed foot respectively to can make ladder frame 1 and connecting plate 3 rotate round the pin joint, make folding vertical ladder realize expandeing or folding.

The pin shaft assembly comprises a pin shaft 9, a gasket 7 and a perforated pin 8 inserted in the pin shaft 9, wherein the pin shaft 9 penetrates through the connecting plate 3, the ladder frame 1 or the fixing leg and is locked through the perforated pin 8.

In this embodiment, the last corner of connecting plate 3 towards fixed foot one side sets to the fillet, and the lower corner is ordinary right angle, so sets up to can't make connecting plate 3 stably keep at the horizontality when preventing to expand folding vertical ladder.

The connecting plate 3 is further provided with a first positioning hole 13, a locking assembly is fixed below the first positioning hole 13, and the ladder frame 1 is provided with a second positioning hole 14 corresponding to the first positioning hole 13. When the ladder frame 1 is moved upward to rotate the connecting plate 3 from the horizontal state to the vertical state (when the folding vertical ladder is changed from the unfolded state to the folded state), the first positioning hole 13 is just overlapped with the second positioning hole 14 to insert the locking assembly, thereby locking the folding vertical ladder in the folded state.

The locking assembly comprises a steel wire rope 11 fixed on the connecting plate 3 and a locking bolt 10 fixed at the tail end of the steel wire rope 11. In this embodiment, the locking bolt 10 is a bolt with a tongue for a ship.

The fixing foot consists of a compound plate 5 fixed on the ship body structure 6 and two eye plates 4 vertically fixed on the compound plate 5. The two eye plates 4 are arranged on two sides of the connecting plate 3 and are hinged and fixed with the connecting plate 3 through pin shaft assemblies.

When the folding straight ladder is used, the web plate of the folding straight ladder is fixed on a hull structure, the folding straight ladder is in an unfolded state shown in figure 1, and workers can use the folding straight ladder as a boarding ladder to operate ship equipment.

When the ship equipment does not need to be operated, a worker can push the folding straight ladders upwards by the flat steel on the two sides of the ladder frame, the ladder frame 1 and the connecting plate 3 can rotate under the action of the pin shaft assembly (the movement direction is shown by an arrow in fig. 6), the connecting plate 3 is turned into a vertical state from a horizontal state, the first positioning hole 13 is just overlapped with the second positioning hole 14, and then the locking bolt 10 of the locking assembly is inserted into the first positioning hole 13 and the second positioning hole 14, so that the folding straight ladders are locked in a folding state.

When the ship equipment needs to be operated, the reverse operation is carried out according to the steps.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.