Life raft release device for limited storey height of passenger ship

Abstract

The invention discloses a passenger ship limited floor height life raft release device which comprises a top guide frame and an automatic leading-out mechanism, the top guide frame comprises a leading-out part close to the broadside and a blocking part located on the side, away from the broadside, of the leading-out part, and the leading-out part is obliquely and downwards arranged relative to a top deck from the broadside; the included angle between the leading-out part and the top deck is not smaller than 20 degrees, the upper end of the leading-out part is fixedly connected with the top deck of a life raft storage place, one end of the blocking part is connected with the lower end of the leading-out part, and the other end of the blocking part is fixedly connected with the top deck of the life raft storage place; the automatic leading-out mechanism is arranged on the side, away from the broadside, of the highest life raft and used for pushing the life raft located below the blocking part to move towards the broadside. The life raft releasing device is provided with the automatic discharging mechanism of the water immersion pressure releaser, and even if the angle of the top guide frame in a limited space is less than 20 degrees, the life raft can still be automatically discharged out of a mother ship to be used by people escaping from the water surface.

Description

Technical Field

[0001] The invention relates to the technical field of ship life rafts, in particular to a life raft releasing device of a passenger ship with limited floor height. Background Art

[0002] A life raft is a life-saving device floating on the sea for the crew to escape when the ship is in distress and abandoned.

[0003] Generally, the life raft is released manually by the crew after the abandon ship order is issued. However, in order to avoid the situation in which the life raft is carried to the bottom of the sea by the mother ship before it can be released in time in an emergency, resulting in a waste of life-saving equipment, the International Life-Saving Appliance Code (hereinafter referred to as LSA) requires that the storage and lashing device must be equipped with a submerged pressure releaser. When the life raft sinks below the sea surface and is subjected to a certain water pressure, the lashing rope will be automatically cut off, and the life raft will float to the water surface by buoyancy for use by people escaping on the water.

[0004] LSA further requires that the life raft must be able to be used normally when the mother ship is tilted 20° transversely. In order to avoid that even if the life raft is automatically released during heeling, it will still be stuck in the hull structure (see Fig.10 ), current life raft designs will be equipped with a guide frame that is inclined more than 20° outward from the ship's side to ensure that the life raft can still float out of the water (see Fig.11 ).Depend on Fig.11 It can be seen that only when the angle of the top cross bar of the guide frame is greater than 20 degrees, can it be ensured that when the mother ship is tilted 20°, the top cross bar is still inclined upward to the outside relative to the horizontal direction, thereby ensuring the smooth export of the raft.

[0005] However, on some ships, especially passenger ships, due to the limited deck height and storage space, there is not enough height space on the top of the double or triple life raft to arrange a guide frame with an angle of more than 20° (see Fig. 9 ). As a result, in an emergency, the life raft may be carried to the bottom of the sea by the mother ship and cannot be effectively used, which violates the design principle of LSA. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a life raft releasing device for a passenger ship with limited floor height, which is equipped with an automatic discharge mechanism of a submerged pressure releaser. Even if the angle of the top guide frame does not reach more than 20° in the limited space, the life raft can still be automatically discharged from the mother ship for use by people escaping from the water.

[0007] To achieve the above objectives, the present invention adopts the following technical solutions: A life raft releasing device of a passenger ship with a limited floor height comprises a top guide frame, an automatic lead-out mechanism and a life raft storage rack, wherein a plurality of life rafts are fixed in sequence along a direction away from the side of the ship via a water-immersion pressure releaser on a supporting surface of the life raft storage rack which is inclined upward from the side of the ship relative to the bottom deck of a life raft storage place, the top guide frame comprises a lead-out portion close to the side of the ship and a blocking portion located on a side of the lead-out portion away from the side of the ship, the lead-out portion is arranged to be inclined downward from the side of the ship relative to the top deck, the angle between the lead-out portion and the top deck is not less than 20°, the upper end of the lead-out portion is fixedly connected to the top deck of the life raft storage place, and the vertical distance between the lower end of the lead-out portion and the supporting surface of the life raft storage rack is not less than the outer diameter of the life raft; one end of the blocking portion is connected to the lower end of the lead-out portion, and the other end of the blocking portion is fixedly connected to the top deck of the life raft storage place; the automatic lead-out mechanism is arranged on a side of the highest life raft away from the side of the ship, and is used to push the life raft located below the blocking portion to move toward the side of the ship.

[0008] Furthermore, the blocking portion is arranged to be inclined upward relative to the bottom deck or to be arranged parallel to the bottom deck from the connecting end thereof with the guide portion, and the maximum inclination angle is the same as the inclination angle of the supporting surface of the life raft storage rack.

[0009] Furthermore, the automatic export mechanism includes a support rod and two elastic members, the two elastic members are arranged in parallel and at intervals at the left and right ends of the support rod, a slider is fixed on the left and right sides of the support rod respectively, and two push rods are mirror-symmetrically connected to the two sliders, and the push rods are arranged to contact the life raft at the highest point.

[0010] Furthermore, the life raft releasing device also includes two bases, the two bases are arranged on both sides of the life raft storage rack, the length direction of the two bases is arranged parallel to the length direction of the life raft storage rack, the upper end surface of the base is an inclined surface parallel to the supporting surface of the life raft storage rack, and the two sliding blocks are connected to a base for up and down sliding; the two elastic members are respectively arranged in the upper end surface of a base, and one end thereof away from the supporting rod is fixedly connected to the base, the extending direction of the elastic member is parallel to the upper end surface of the base, and the supporting rod is connected to the end of the life raft storage rack away from the side through a rope loop with a water-immersed pressure releaser.

[0011] Furthermore, the upper end surface of each base is composed of at least two inclined rods, and the two sliders are sleeve sliders adapted to the shape of the rods, and the two sliders are respectively sleeved on a rod.

[0012] Furthermore, the two sliding blocks are respectively sleeved on rods adjacent to the life raft storage rack in the two bases, and the support rod is located below the rods.

[0013] Furthermore, the upper end surface of the base is lower than the upper end surface of the life raft storage rack; the middle part of the push rod is an arc segment with a diameter the same as the outer diameter of the life raft, and when the life raft is in storage state, the two ends of the push rod are not in contact with the outer side surface of the life raft.

[0014] Furthermore, the blocking part includes at least two blocking rods arranged in parallel and at intervals, the two sliders are sleeve sliders adapted to the shape of the blocking rods, the two sliders are respectively sleeved on a blocking rod and slidably connected to the blocking rod; the end of the elastic member away from the support rod is fixedly connected to the lower end of the blocking part.

[0015] Furthermore, the elastic member is a spring, and the spring is sleeved on the blocking rod.

[0016] Furthermore, the push rod comprises a straight rod section extending vertically downward from the slider and an arc section having a diameter identical to the outer diameter of the life raft. When the life raft is in storage state, the arc section is completely in contact with the outer side surface of the life raft.

[0017] The life raft releasing device for passenger ships with limited floor height of the present invention solves the problem that in the case of ships with insufficient floor height and space, the life raft cannot float freely outboard for use by persons in distress in the event of emergency and sinking due to the lack of a guide frame with a suitable angle.

[0018] The life raft guide device of the present invention has the characteristics of simple structure, no need for any electromechanical equipment assistance, and high reliability. In addition, when the crew has time to manually release the life raft under normal working conditions, since the automatic guide frame is located at the upper rear of the life raft and does not hinder the downward throwing of the life raft, there is no need to manually release the automatic guide frame system, and there is no adverse effect or interference on the normal use of the life raft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the life raft releasing device for a passenger ship with limited floor height described in Example 1.

[0020] Figure 2 This is a schematic diagram of the use status of the life raft releasing device for a passenger ship with limited floor height described in Example 1.

[0021] Figure 3 This is a side view of the use status of the life raft releasing device for a passenger ship with limited floor height described in Example 1.

[0022] Figure 4 This is a schematic diagram of the initial state of the life raft after it is automatically released when the life raft releasing device for a passenger ship with a limited floor height described in Example 1 is used.

[0023] Figure 5 This is a schematic diagram of a life raft being squeezed out of the ship by an automatic export plate when the life raft releasing device for a passenger ship with a limited floor height described in Example 1 is used.

[0024] Figure 6 This is a side view of the use status of the life raft releasing device for a passenger ship with limited floor height described in Example 2.

[0025] Figure 7 This is a schematic diagram of the initial state of the life raft after it is automatically released when the life raft releasing device for a passenger ship with a limited floor height described in Example 2 is used.

[0026] Figure 8 This is a schematic diagram of a life raft being automatically squeezed out of the ship by a lead-out plate when the life raft releasing device for a passenger ship with a limited floor height as described in Example 2 is used.

[0027] Fig. 9 The floor height is not high enough to install a conventional 25° life raft guide frame.

[0028] Fig.10 A schematic diagram of a life raft without a guide frame, in which when the ship tilts 20° and sinks underwater, the raft will still be stuck in the hull and carried to the seabed after being automatically released.

[0029] Fig.11 Schematic diagram of a life raft equipped with a guide frame. When the ship tilts 20° and sinks into the water, the raft will be guided out of the ship's side by the guide frame after being released.

[0030] Among them, 1-top guide frame, 2-automatic export mechanism, 3-base, 4-rope loop, 5-spring, 61-upper life raft, 62-lower life raft, 7-life raft storage rack, 8-top deck, 9-bottom deck, 11-export part, 12-blocking part, 21-support rod, 22-push rod, 23-slider, 31-rod, 121-blocking rod, 221-straight rod section, 222-arc section. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0032] like Figure 1~Figure 5As shown, a life raft releasing device of a passenger ship with a limited floor height comprises a top guide frame 1, an automatic lead-out mechanism 2 and a life raft storage rack 7. A plurality of life rafts are fixed in sequence along a direction away from the side of the ship via a flooded pressure releaser on a supporting surface of the life raft storage rack 7 which is inclined upward from the side of the ship relative to the bottom deck 9 of the life raft storage place. The top guide frame 1 comprises a lead-out portion 11 close to the side of the ship and a blocking portion 12 located at a side of the lead-out portion 11 away from the side of the ship. The lead-out portion 11 is arranged to be inclined downward from the side of the ship relative to the top deck 8. The lead-out portion 12 is arranged to be inclined downward from the side of the ship relative to the top deck 8. The angle between the lead-out portion 11 and the top deck 8 is not less than 20°, the upper end of the lead-out portion 11 is fixedly connected to the top deck 8 of the life raft storage place, and the vertical distance between the lower end of the lead-out portion 11 and the support surface of the life raft storage rack 7 is not less than the outer diameter of the life raft; one end of the blocking portion 12 is connected to the lower end of the lead-out portion 11, and the other end of the blocking portion 12 is fixedly connected to the top deck 8 of the life raft storage place; the automatic lead-out mechanism 2 is arranged on the side of the highest life raft away from the side, and is used to push the life raft located below the blocking portion 12 to move to the side. In this embodiment, two life rafts are fixed to the life raft storage rack 7 through a flooded pressure releaser, and the two life rafts are respectively the upper life raft 61 and the lower life raft 62. Of course, in other embodiments, the number of life rafts can be 3. Under the premise of ensuring that the upper life raft 61 can roll down to the bottom of the lead-out portion, the length of the lead-out portion 11 is as long as possible, and the length of the blocking portion 12 is as short as possible.

[0033] It is understandable that when the ship is in distress and sinks below the sea surface, the upper life raft 61 and the lower life raft 62 automatically detach from the life raft storage rack 7 through their own submerged pressure release devices and float upward; the lower life raft 62 can use the lead-out portion 11 to automatically drift outboard and rise to the sea surface, and the upper life raft 61 will still be stuck between the automatic guide plate 2 and the top guide frame 1 after floating up. At this time, the automatic lead-out mechanism 2 pushes the upper life raft 61 to move to the side until it is pushed below the lead-out portion 11, and then the upper life raft 61 uses the lead-out portion 11 to automatically drift outboard and rise to the sea surface. The mutual cooperation between the top guide frame 1 and the automatic lead-out mechanism 2 solves the problem that for ships with insufficient floor height and space, in the event of an emergency and distress sinking, the life raft cannot float freely outboard for use by people in distress because it is not equipped with a guide frame at a suitable angle.

[0034] Furthermore, the life raft releasing device also includes two bases 3, and the two bases 3 are arranged on both sides of the life raft storage rack 7. The length direction of the two bases 3 is parallel to the length direction of the life raft storage rack 7, and the upper end surface of the base 3 is an inclined surface parallel to the supporting surface of the life raft storage rack 7, and the two sides of the automatic export mechanism 2 are connected to the base 3 in an up and down sliding manner.

[0035] It is understandable that the arrangement of the base 3 facilitates the arrangement and installation of the automatic lead-out mechanism 2. On the other hand, the length of the automatic lead-out mechanism 2 in the direction of the ship length can be increased, thereby ensuring the dispersion of the thrust of the automatic lead-out mechanism 2 on the upper life raft 61 and the stability of the entire life raft release device. Of course, in other embodiments, the automatic lead-out mechanism 2 can also be slidably connected to the life raft storage rack 7.

[0036] Specifically, the automatic lead-out mechanism 2 includes a support rod 21 and two elastic members 5, the two elastic members 5 are arranged at intervals and in parallel at the left and right ends of the support rod 21, the left and right sides of the support rod 21 are respectively connected to the base 3 by sliding up and down through a slider 23, and a push rod 22 is arranged on the upper end surface of the left and right sides of the support rod 21 in a mirror-symmetrical manner, and the push rod 22 is arranged in contact with the highest life raft; the two elastic members 5 are respectively arranged in the upper end surface of a base 3, the extension direction of the elastic member 5 is parallel to the upper end surface of the base 3, one end of the elastic member 5 is fixedly connected to the upper end surface of the base 3, and the other end is fixedly connected to the support rod 21, and the support rod 21 is connected to the end of the life raft storage rack 7 away from the side through a rope loop 4 with a water-immersion pressure releaser. The position of the fixed connection point of the elastic member 5 and the base 3 needs to be determined after comprehensively considering its own performance and the position of the lower end of the lead-out section.

[0037] It is understandable that when the submerged pressure releaser on the rope loop 4 fixing the automatic lead-out mechanism 2 is activated to cut off the rope loop 4, the elastic member 5 contracts to pull the automatic support rod 21 and the push rod 22 to slide toward the side, and the push rod brings the upper end life raft 61 out of the stuck area to the lower section of the top guide frame 11, and then the life raft can be automatically led out of the ship. In this embodiment, the elastic member 5 is a spring, and of course in other embodiments, the elastic member 5 can be in other forms.

[0038] In this embodiment, the upper end surface of each base 3 includes at least two inclined rods 31, the length direction of the rod 31 is perpendicular to the side direction, at least two rods 31 are arranged in parallel at intervals, and the two sliders 23 are sleeve sliders 23 adapted to the shape of the rod 31, and the two sliders 23 are respectively sleeved on one rod 31. In this embodiment, the slider 23 is a sleeve slider 23, and the rod 31 is a round rod 31. Of course, in other embodiments, the slider 23 can also be a slider 23 of other shapes, such as a square. In this embodiment, the two ends of the rod 31 are fixedly connected to the bottom deck 9 through a vertical rod. In other embodiments, the two ends of the rod 31 can also be fixedly connected to the bottom deck by other forms of connecting members.

[0039] Furthermore, the two sliding blocks 23 are respectively sleeved on the rods 31 adjacent to the life raft storage rack 7 in the two bases 3 , and the support rod 21 is located below the rod 31 .

[0040] In this embodiment, when the life raft is in storage state, the contact position of the push rod 22 and the upper life raft 61 is completely in contact with the outer side surface of the life raft at that position; the longitudinal section of the life raft is circular, the middle part of the push rod is an arc part with the same diameter as the outer diameter of the life raft, and the upper part of the arc part is a straight rod. When the upper life raft 61 floats up to abut against the blocking part 12, the upper part of the straight rod is tangent to the upper life raft 61. Of course, in other embodiments, the shape of the push rod 22 can be any other shape, as long as it can ensure that the upper life raft 61 can be pushed below the outlet 11.

[0041] Furthermore, the upper end surface of the base 3 is lower than the upper end surface of the life raft storage rack 7; the middle part of the push rod 22 is an arc segment with a diameter the same as the outer diameter of the life raft, and when the life raft is in storage state, the two ends of the push rod are not in contact with the outer side surface of the life raft.

[0042] Further, the blocking portion 12 is arranged to be inclined upward relative to the bottom deck 9 from the end connected with the guide portion, and the maximum inclination angle is the same as the inclination angle of the support surface of the life raft storage rack. Specifically, the blocking portion 12 is arranged parallel to the support surface of the life raft storage rack 7. It can be understood that the blocking portion 12 is arranged parallel to the support surface of the life raft storage rack 7 so that when the upper end life raft 61 moves outward, it moves in the same direction as the automatic lead-out mechanism 2. Of course, in other embodiments, the blocking portion 12 can also be arranged parallel to the bottom deck 9. In this embodiment, the top guide frame 1 is composed of two parallel and spaced V-shaped bending rods, and the two V-shaped bending rods are connected at the connection between the blocking portion 12 and the lead-out portion 11 by a cross bar, and the open ends of the two V-shaped bending rods are fixedly connected to the top deck 8 by a vertical rod on both sides. Of course, in other embodiments, the top guide frame 1 can also be in other forms, as long as it includes the blocking portion 12 and the lead-out portion 11 structure of the present invention. For example, the top guide frame 1 can be a V-shaped bending plate. Example

[0043] like Figure 7~Figure 9 As shown, in this embodiment, the base 3 in Embodiment 1 is eliminated, the automatic lead-out mechanism 2 is fixed to the lead-out portion of the top guide frame 1, and the structure of the automatic lead-out mechanism 2 is adaptively adjusted.

[0044] Specifically, in this embodiment, the blocking portion 12 includes at least two blocking rods 121 arranged in parallel and spaced apart, the two sliders 23 are sleeve sliders adapted to the shape of the blocking rods, the two sliders 23 are respectively sleeved on a blocking rod 121 and slidably connected to the blocking rod 121; one end of the elastic member 5 away from the support rod 21 is fixedly connected to the lower end of the blocking portion 12, the elastic member is a spring, and the spring is sleeved on the blocking rod 121.

[0045] Further, the push rod 22 includes a straight rod section 221 extending vertically downward from the slider and a circular arc section 222 having a diameter the same as the outer diameter of the life raft, and when the life raft is in storage, the circular arc section 222 is completely in contact with the outer side of the life raft. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A life raft release device for a passenger ship with limited floor height, characterized in that: The invention comprises a top guide frame, an automatic lead-out mechanism and a life raft storage rack, wherein a plurality of life rafts are fixed in sequence along a direction away from the side of the ship on a supporting surface of the life raft storage rack which is inclined upward from the side of the ship relative to the bottom deck of the life raft storage place through a flooded pressure releaser, the top guide frame comprises a lead-out portion close to the side of the ship and a blocking portion located on the side of the lead-out portion away from the side of the ship, the lead-out portion is arranged to be inclined downward from the side of the ship relative to the top deck, the angle between the lead-out portion and the top deck is not less than 20°, the upper end of the lead-out portion is fixedly connected to the top deck of the life raft storage place, and the vertical distance between the lower end of the lead-out portion and the supporting surface of the life raft storage rack is not less than the outer diameter of the life raft; one end of the blocking portion is connected to the lower end of the lead-out portion, and the other end of the blocking portion is fixedly connected to the top deck of the life raft storage place; the automatic lead-out mechanism is arranged on the side of the highest life raft away from the side of the ship, and is used to push the life raft located below the blocking portion to move toward the side of the ship.

2. A life raft release device for a passenger ship with limited floor height according to claim 1, characterized in that: The blocking portion is arranged to be inclined upward relative to the bottom deck or to be arranged parallel to the bottom deck from the connecting end thereof with the guide portion, and the maximum inclination angle is the same as the inclination angle of the supporting surface of the life raft storage rack.

3. A life raft releasing device for a passenger ship with limited floor height according to claim 2, characterized in that: The automatic export mechanism includes a support rod and two elastic members, the two elastic members are arranged in parallel at the left and right ends of the support rod, a slider is fixed on the left and right sides of the support rod respectively, two push rods are mirror-symmetrically connected to the two sliders, and the push rods are arranged in contact with the life raft at the highest point.

4. A life raft releasing device suitable for passenger ships with limited floor height according to claim 3, characterized in that: The life raft releasing device also includes two bases, which are arranged on both sides of the life raft storage rack, and the length direction of the two bases is parallel to the length direction of the life raft storage rack. The upper end surface of the base is an inclined surface parallel to the supporting surface of the life raft storage rack, and the two sliding blocks are connected to a base for vertical sliding; the two elastic members are respectively arranged in the upper end surface of a base, and one end of the elastic members away from the supporting rod is fixedly connected to the base, and the extending direction of the elastic members is parallel to the upper end surface of the base, and the supporting rod is connected to the end of the life raft storage rack away from the side through a rope loop with a water-immersed pressure releaser.

5. A life raft releasing device for a passenger ship with limited floor height according to claim 4, characterized in that: The upper end surface of each base is composed of at least two inclined rods, and the two sliders are sleeve sliders matched with the shapes of the rods, and the two sliders are respectively sleeved on a rod.

6. A life raft releasing device for a passenger ship with limited floor height according to claim 5, characterized in that: The two sliding blocks are respectively sleeved on rods adjacent to the life raft storage racks in the two bases, and the support rods are located below the rods.

7. A life raft releasing device for a passenger ship with limited floor height according to claim 6, characterized in that: The upper end surface of the base is lower than the upper end surface of the life raft storage rack; the middle part of the push rod is an arc segment with the same diameter as the outer diameter of the life raft, and when the life raft is in storage state, the two ends of the push rod are not in contact with the outer side surface of the life raft.

8. A life raft releasing device suitable for passenger ships with limited floor height according to claim 3, characterized in that: The blocking part includes at least two blocking rods arranged in parallel and at intervals, and the two sliders are sleeve sliders adapted to the shape of the blocking rods. The two sliders are respectively sleeved on a blocking rod and slidably connected to the blocking rod; one end of the elastic member away from the support rod is fixedly connected to the lower end of the blocking part.

9. A life raft releasing device for a passenger ship with limited floor height according to claim 8, characterized in that: The elastic member is a spring, and the spring is sleeved on the blocking rod.

10. A life raft releasing device for a passenger ship with limited floor height according to claim 9, characterized in that: The push rod comprises a straight rod section extending vertically downward from the slider and an arc section with a diameter the same as the outer diameter of the life raft. When the life raft is in storage state, the arc section is completely fitted with the outer side surface of the life raft.

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