Liquefied natural gas (LNG) ship cargo machine room module vertical ladder

Abstract

The utility model discloses an LNG (Liquefied Natural Gas) ship cargo machine room module vertical ladder, and relates to the technical field of ship equipment. The vertical ladder structurally comprises a vertical ladder body, a vertical ladder body; the vertical ladder body is provided with at least four transverse connecting arms connected with a cabin wall, and the two sides of the vertical ladder body are each fixedly provided with a movable supporting device; the movable supporting device comprises a guide groove frame and a stay wire auxiliary handle; the guide groove frame comprises H-shaped steel; the opposite inner walls of one end of the H-shaped steel are symmetrically and fixedly provided with guide battens which are in guide fit with the stay wire auxiliary handle; and one side surface of the H-shaped steel is fixed on the side surface of the straight ladder body. The movable supporting devices are respectively mounted on two sides of the vertical ladder body and are used for assisting when a ship body shakes, two hands of a sailor continuously grab the fixed pull ring in the whole process of getting on and off the vertical ladder body, a follow-up grabbing object is arranged in the hands of the sailor when the ship bumps, a stable acting grabbing object is provided for the sailor, and the sailor can be prevented from falling off. And the problem of unstable single-hand grasping during hand changing of the sailors is effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship equipment, in particular to a modular straight ladder for a cargo machinery room of an LNG ship. Background Art

[0002] The cargo machinery room of an LNG ship usually includes three platform spaces: upper, middle and lower. Vibrations and shaking will occur when cargo is transported through pipelines, the ship is sailing, and the equipment in the cargo machinery room is in operation. Therefore, the design of the ladder must be able to withstand the dynamic loads in these situations. The ladder usually includes a ladder body and a guardrail arranged on one side to prevent climbing personnel from falling. A climbing passage is formed between the guardrail and the ladder body. An entrance for entering the climbing passage is provided near the bottom of the ladder, and the passage extends from the entrance to the upper end of the ladder body. In addition, a transverse connecting arm may be provided on the other side of the ladder to enhance the stability of the ladder. The existing ladder requires alternating hands when going up and down, and the gripping force of one hand may not be enough to stabilize the body when the hull shakes. In addition, the climbing passage between the guardrail and the ladder body can only prevent falling backwards, and the climbing passage cannot provide a follow-up support on the back of the crew. In order to solve the above technical problems, the present application document provides a modular ladder for the cargo machinery room of an LNG ship. Utility Model Content

[0003] The utility model aims to provide a modular ladder for the cargo machinery room of an LNG ship. By installing a mobile supporting device on both sides of the ladder body, a stable grip is provided for the crew, thereby effectively avoiding the problem of unstable single-handed grip when the crew changes hands.

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model is a modular straight ladder for a cargo machinery room of an LNG ship, comprising a straight ladder body; at least four transverse connecting arms connected to the cabin wall are installed on the straight ladder body, and a movable supporting device is fixed on both sides of the straight ladder body respectively; the movable supporting device comprises a guide slot frame and a wire-pulling auxiliary handle; the guide slot frame comprises an H-shaped steel; the relative inner walls at one end of the H-shaped steel are symmetrically fixed with guide strips that cooperate with the guide of the wire-pulling auxiliary handle; one side of the H-shaped steel is fixed to the side of the straight ladder body, and the guide strips are away from the transverse connecting arm; a row of reinforcing ribs are fixed between the relative inner walls at the other end of the H-shaped steel; the middle wall of the H-shaped steel is provided with a guide slot arranged along its length direction; two first oblique tooth plates are fixed to the side surfaces of the middle wall of the H-shaped steel adjacent to the reinforcing rib plate, and the two first oblique tooth plates are symmetrically arranged about the guide slot; the wire-pulling auxiliary handle comprises second oblique tooth plates that cooperate with the two first oblique tooth plates respectively.

[0006] As a preferred technical solution of the utility model, the wire-pulling auxiliary handle also includes a linear guide cylinder, a spring, a pulling handle and a steel wire rope; two guide wheels are symmetrically fixed on the outer wall of the linear guide cylinder; the guide wheels roll along the guide strips; a linear guide tube is slidably fitted in the linear guide cylinder; a rectangular plate is fixed to the outer wall after the linear guide tube passes through the guide groove; two second bevel tooth plates are fixed on the side of the rectangular plate relative to the first bevel tooth plate; a fixed pull ring is fixed on the end of the linear guide cylinder away from the linear guide tube; the pulling handle is placed on the inner side of the fixed pull ring; one end of the steel wire rope is fixedly connected to the pulling handle; the other end of the steel wire rope passes through the linear guide cylinder and the linear guide tube in sequence and is fixed with a limiting lead block; the spring is sleeved on the linear guide tube.

[0007] As a preferred technical solution of the utility model, the surface of the pull handle and the surface of the fixed pull ring are both wrapped with a nitrile rubber layer.

[0008] As a preferred technical solution of the utility model, the mobile supporting device also includes a pull rope and two reversing wheels; the two reversing wheels are respectively installed on the upper and lower ends of the H-shaped steel; the pull rope is wound around the two reversing wheels, and the two ends of the pull rope are respectively fixed on the upper and lower walls of the linear guide cylinder; half of the pull rope is placed on the outside of the H-shaped steel.

[0009] As a preferred technical solution of the utility model, a protective belt is installed between the two fixed pull rings of the two mobile supporting devices.

[0010] The utility model has the following beneficial effects:

[0011] 1. The utility model installs a movable supporting device on both sides of the ladder body for auxiliary use when the ship shakes. The crew members continuously grasp the fixed pull ring with both hands during the whole process of going up and down the ladder body. When the ship is bumpy, the crew members have a moving grasping object in their hands, which provides a stable grasping object for the crew members, effectively avoiding the problem of unstable grasping with one hand when the crew members change hands.

[0012] 2. The design of the mobile supporting device of the utility model includes a guide groove frame and a pull-wire auxiliary handle, so that the crew can continuously and stably grasp the fixed pull ring with both hands when climbing. The structural design of the pull-wire auxiliary handle allows positioning on the inner guide groove frame, which is convenient for the crew to climb with their arms and reduces the problem of unstable climbing caused by hull shaking.

[0013] 3. The utility model provides a damping effect for the mobile supporting device by adding a pull rope and a reversing wheel to prevent the pull rope auxiliary handle from falling quickly and causing damage. The design of the pull rope simplifies the operation of the pull rope auxiliary handle. The crew can adjust the position of the pull rope auxiliary handle by pulling the pull rope to adapt it to the shaking of the hull and ensure convenience of use.

[0014] 4. The utility model provides an additional safety measure for the crew when they go up and down the vertical ladder by installing a protective belt. The protective belt can effectively ensure the safety of the crew when the hull shakes to a large extent as a support.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model.

[0018] Figure 2 It is a structural schematic diagram of the straight ladder body.

[0019] Figure 3 It is a front view of the mobile support device.

[0020] Figure 4 Schematic diagram of the structure of the guide groove frame.

[0021] Figure 5 It is a structural schematic diagram of a wire-pull auxiliary handle.

[0022] Figure 6 It is a structural diagram of embodiment 2.

[0023] Figure 7 This is a schematic diagram of the structure of the third embodiment.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1-straight ladder body, 2-lateral connecting arm, 3-mobile supporting device, 4-guide groove frame, 5-pull wire auxiliary handle, 6-pull rope, 7-reversing wheel, 8-protective belt, 41-H-shaped steel, 42-guide plate strip, 43-reinforcement rib plate, 44-guide groove, 45-first oblique tooth plate, 51-second oblique tooth plate, 52-linear guide cylinder, 53-spring, 54-pull handle, 55-wire rope, 56-guide wheel, 57-linear guide tube, 58-rectangular plate, 59-fixed pull ring, 510-limiting lead block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment one:

[0028] See also Figure 1-5 As shown, the utility model is a modular ladder for a cargo machinery room of an LNG ship, comprising a ladder body 1. The ladder body 1 is provided with at least four transverse connecting arms 2 connected to the cabin wall, and a mobile supporting device 3 is fixed on both sides of the ladder body 1. The mobile supporting device 3 comprises a guide slot frame 4 and a pull wire auxiliary handle 5.

[0029] The guide groove frame 4 includes an H-shaped steel 41. A guide strip 42 that guides and cooperates with the pull wire auxiliary handle 5 is symmetrically fixed to the relative inner wall at one end of the H-shaped steel 41. One side of the H-shaped steel 41 is fixed to the side of the straight ladder body 1, and the guide strip 42 is away from the transverse connecting arm 2. A row of reinforcing ribs 43 are fixed between the relative inner walls at the other end of the H-shaped steel 41. The middle wall of the H-shaped steel 41 is provided with a guide groove 44 arranged along its length direction. Two first oblique tooth plates 45 are fixed to the side of the middle wall of the H-shaped steel 41 adjacent to the reinforcing rib 43, and the two first oblique tooth plates 45 are symmetrically arranged about the guide groove 44.

[0030] The wire-pulling auxiliary handle 5 includes a linear guide cylinder 52, a spring 53, a pull handle 54, a steel wire rope 55, and two second beveled tooth plates 51 respectively matched with the two first beveled tooth plates 45. Two guide wheels 56 are symmetrically fixed on the outer wall of the linear guide cylinder 52. The guide wheels 56 roll along the guide plate strips 42. A linear guide tube 57 is slidably matched in the linear guide cylinder 52. After the linear guide tube 57 passes through the guide channel 44, a rectangular plate 58 is fixed on the outer wall. The two second beveled tooth plates 51 are fixed on the side of the rectangular plate 58 relative to the first beveled tooth plate 45. A fixed pull ring 59 is fixed at one end of the linear guide cylinder 52 away from the linear guide tube 57. The pull handle 54 is placed inside the fixed pull ring 59. One end of the steel wire rope 55 is fixedly connected to the pull handle 54. The other end of the steel wire rope 55 passes through the linear guide cylinder 52 and the linear guide tube 57 in sequence and then is fixed with a limited lead block 510. The spring 53 is sleeved on the linear guide tube 57.

[0031] The wire-pulling auxiliary handle 5 moves up and down in the inner guide groove frame 4. When in use, the feet are stepped on the vertical ladder body 1, and the two hands are respectively held on a fixed pull ring 59 of a wire-pulling auxiliary handle 5. When the wire-pulling auxiliary handle 5 needs to be positioned on the inner guide groove frame 4, two fingers are hooked on the pull handle 54 and pulled. Through the conduction of the wire rope 55, the second inclined tooth plate 51 is pulled toward the first inclined tooth plate 45. After the two tooth plates are interlaced, the wire-pulling auxiliary handle 5 is restricted in the inner guide groove frame 4, which is convenient for the arm to apply force to climb the vertical ladder. The crew continues to hold the fixed pull ring 59 with both hands during the whole process of going up and down the vertical ladder body 1. When the ship is bumpy, there is a moving grip in the hand, which provides a stable grip for the crew, effectively avoiding the problem of unstable grip of one hand when the crew changes hands.

[0032] In order to ensure that the crew has sufficient friction when gripping, the surface of the pull handle 54 and the surface of the fixed pull ring 59 are both wrapped with a nitrile rubber layer. Specific embodiment 2:

[0034] Based on the specific embodiment 1, the difference of this embodiment is that:

[0035] like Figure 6As shown, the mobile supporting device 3 also includes a pull rope 6 and two reversing wheels 7. The two reversing wheels 7 are respectively mounted on the upper and lower ends of the H-shaped steel 41. The pull rope 6 is wound around the two reversing wheels 7, and the two ends of the pull rope 6 are respectively fixed on the upper and lower walls of the linear guide cylinder 52. Half of the pull rope 6 is placed on the outside of the H-shaped steel 41. In addition, the reversing wheel 7 is provided with damping, and the pull rope 6 acts as a resistance to the auxiliary pull handle 5, thereby preventing the auxiliary pull handle 5 from falling rapidly from the top and causing damage. In this embodiment, by installing the pull rope 6 and the two reversing wheels 7 on the inner guide slot frame 4, when the ship is shaking and the auxiliary pull handle 5 is needed, the pull rope 6 is pulled to pull the auxiliary pull handle 5 from the bottom to the top, thereby ensuring that the crew can conveniently use the auxiliary pull handle 5 when the vertical ladder body 1 is in the upper and lower positions. Specific embodiment three:

[0037] Based on the second specific embodiment, the difference of this embodiment is that:

[0038] like Figure 7 As shown, a protective belt 8 is installed between two fixed pull rings 59 of the two mobile supporting devices 3. In this embodiment, by installing the protective belt 8 on the two fixed pull rings 59, a protective belt 8 is provided for the crew to rely on when going up and down the vertical ladder. When the hull shakes greatly, the crew's safety is effectively guaranteed by relying on the follow-up protective belt 8.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A modular vertical ladder for a cargo machinery room of an LNG ship, comprising a vertical ladder body (1); at least four transverse connecting arms (2) connected to the cabin wall are mounted on the vertical ladder body (1), characterized in that: A movable supporting device (3) is respectively fixed on both sides of the vertical ladder body (1); The mobile supporting device (3) comprises a guide slot frame (4) and a pull-wire auxiliary handle (5); The guide slot frame (4) comprises an H-shaped steel (41); a guide strip (42) for guiding and cooperating with the pull wire auxiliary handle (5) is symmetrically fixed to the relative inner wall at one end of the H-shaped steel (41); one side of the H-shaped steel (41) is fixed to the side of the straight ladder body (1), and the guide strip (42) is away from the transverse connecting arm (2); a row of reinforcing ribs (43) are fixed between the relative inner walls at the other end of the H-shaped steel (41); a guide slot (44) arranged along its length direction is opened in the middle wall of the H-shaped steel (41); two first oblique tooth plates (45) are fixed to the side of the middle wall of the H-shaped steel (41) adjacent to the reinforcing rib plate (43), and the two first oblique tooth plates (45) are symmetrically arranged with respect to the guide slot (44); The wire-pulling auxiliary handle (5) comprises a second beveled tooth plate (51) respectively matched with the two first beveled tooth plates (45).

2. The LNG ship cargo machinery room modular vertical ladder according to claim 1 is characterized in that: The wire-pulling auxiliary handle (5) further comprises a linear guide cylinder (52), a spring (53), a pull handle (54) and a steel wire rope (55); two guide wheels (56) are symmetrically fixed to the outer wall of the linear guide cylinder (52); the guide wheels (56) are rollingly engaged along the guide strip (42); a linear guide tube (57) is slidingly engaged inside the linear guide cylinder (52); a rectangular plate (58) is fixed to the outer wall of the linear guide tube (57) after passing through the guide groove (44); the rectangular plate (58) is relatively close to the first bevel tooth plate (45 ) is fixed to the side of the second bevel tooth plates (51); a fixed pull ring (59) is fixed to one end of the linear guide cylinder (52) away from the linear guide tube (57); the pull handle (54) is placed on the inner side of the fixed pull ring (59); one end of the steel wire rope (55) is fixedly connected to the pull handle (54); the other end of the steel wire rope (55) passes through the linear guide cylinder (52) and the linear guide tube (57) in sequence and is fixed to a limiting lead block (510); the spring (53) is sleeved on the linear guide tube (57).

3. The LNG ship cargo machinery room module vertical ladder according to claim 2 is characterized in that: The surface of the pull handle (54) and the surface of the fixed pull ring (59) are both wrapped with a nitrile rubber layer.

4. The LNG ship cargo machinery room module vertical ladder according to claim 3 is characterized in that: The mobile supporting device (3) further comprises a pull rope (6) and two reversing wheels (7); the two reversing wheels (7) are respectively mounted on the upper and lower ends of the H-shaped steel (41); the pull rope (6) is wound around the two reversing wheels (7), and the two ends of the pull rope (6) are respectively fixed on the upper and lower walls of the linear guide cylinder (52); and half of the pull rope (6) is placed outside the H-shaped steel (41).

5. The LNG carrier cargo machinery room module vertical ladder according to claim 4 is characterized in that: A protective belt (8) is installed between the two fixed pull rings (59) of the two mobile supporting devices (3).

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