Surface rescue craft

Abstract

The present disclosure relates to a water surface rescue raft, which comprises: a main frame, wherein the main frame is provided with first accommodating chambers on opposite sides of the main frame in a first direction, and the accommodating chambers are closed by grilles; and a propulsion mechanism, which is accommodated in the first accommodating chamber and comprises a propulsion arm and a propeller, wherein the propulsion arm is in a bent form, and the propeller is rotatably fixed at the first end of the propulsion arm, and the second end of the propulsion arm is rotatably fixed to the main frame through a ratchet and pawl mechanism, wherein the rotation plane of the propeller and the rotation plane of the propulsion arm form an angle of 80° to 105°, and the rotation range of the propulsion arm is limited by the ratchet and pawl mechanism. The water surface rescue raft does not require an additional mechanism to adjust the travel direction.

Description

Technical Field

[0001] The present disclosure relates to the field of water surface rescue or transportation technology, and in particular to a water surface rescue boat and raft, which is mainly used for rescue and the like. Background Art

[0002] From ancient times to the present, human social life has never been separated from water activities. Whether it is fishing on the water or water transportation, water activities have long been an indispensable part of human life. However, as water activities bring convenient transportation to humans, enrich water entertainment activities in life, and increase food sources, the number of accidents related to water activities has gradually increased. Whether it is water entertainment activities or water transportation, drowning accidents have always been the biggest safety hazard in water activities. According to statistics from the World Health Organization's "Global Drowning Report", more than 40 people die from drowning every hour due to improper safety measures or their own operations. A total of about 372,000 people drown for this reason every year. The report shows that more than half of the drowning deaths are under 25 years old. The proportion of adolescents who died from drowning is also gradually increasing, and it has now received strong attention from the society. According to relevant professionals, the average person will stop breathing about 2 to 3 minutes after drowning, and brain cells will die in about 5 minutes under the condition of lack of oxygen. If cardiopulmonary resuscitation and other emergency measures can be performed within 4 to 6 minutes after breathing stops, the survival rate of the drowning person will be relatively high. As for the rescue method, the traditional method is to throw a life buoy, a life jacket or row a lifeboat to the place where the lost person is, but it is too late to rescue the drowning person in some emergency situations. The speed is slow and the efficiency is low. In addition, sometimes due to the influence of the environment or the physical strength of the rescuer, it may lead to the situation of "one person falls into the water and many people are killed".

[0003] Therefore, there is an urgent need for a surface rescue craft that can realize various rescue activities.

[0004] Public Content

[0005] In view of the above-mentioned status of the surface rescue boats and rafts according to the prior art, one of the purposes of the present disclosure is to provide a surface rescue boat and raft with a simple structure and relatively easy operation.

[0006] The purpose is achieved by disclosing the following form of water rescue craft. The water rescue craft comprises:

[0007] a main frame, wherein the main frame is provided with first accommodating cavities on opposite sides thereof in a first direction, and the first accommodating cavities are closed by grilles; and

[0008] A propulsion mechanism, which is accommodated in the first accommodating chamber and includes a propulsion arm and a propeller, wherein the propulsion arm is in a bent form, and the first end of the propulsion arm is rotatably fixed to the propeller, and the second end of the propulsion arm is rotatably fixed to the main frame through a ratchet and pawl mechanism, wherein the rotation plane of the propeller and the rotation plane of the propulsion arm form an angle of 80° to 105°, and the rotation range of the propulsion arm is limited by the ratchet and pawl mechanism.

[0009] When the surface rescue raft is placed in the water, the heavier propeller will automatically immerse in the water and drive the propulsion arm to rotate. In the section with turbulent water flow, under the action of the propeller's own gravity, the propeller will not be affected by various waves, and it can always be immersed in the water, ensuring that the power mechanism of the surface rescue raft can operate normally. In addition, with the help of the limiting effect of the ratchet and pawl mechanism that moves synchronously with the propeller (propulsion arm), the heavier propeller will not rotate too much around the second end of the propulsion arm (ratchet and pawl mechanism) after immersion in the water, ensuring that the propeller is always at an angle that can efficiently propel the surface rescue forward / backward.

[0010] Preferably, the ratchet and pawl mechanism comprises a ratchet that rotates synchronously with the second end of the propulsion arm, and a pawl fixed to the main frame.

[0011] Preferably, the ratchet and pawl mechanism is configured so that when the propeller is completely immersed in water and completely out of water, the ratchet is located at two extreme positions of its rotation range respectively.

[0012] Preferably, the ratchet and pawl mechanism further comprises a rotating base and a rotating column, wherein the upper end of the rotating base is locked to the second end of the propulsion arm, and the rotating column is locked on the rotating base and extends from the lower end of the rotating base to fix the ratchet.

[0013] Preferably, the ratchet pawl mechanism also includes a limiting member detachably fixed under the rotating base, the side of the rotating base is formed with a mounting groove that cooperates with the rotating column, and the limiting member includes an end surface that cooperates with the side shape of the rotating column, and when the rotating column and the limiting member are fixed, the end surface of the limiting member abuts against the side of the rotating column.

[0014] Preferably, the main frame also includes a second accommodating cavity located on at least one side of the second direction thereof, and the surface rescue raft also includes a life-saving mechanism located on the second accommodating cavity, the life-saving mechanism includes a placement cabin, an elastic member, a life-saving member, a hatch cover and a hatch cover limiting assembly, wherein the placement cabin is fixed to the main frame, one end of the elastic member is fixed to the inner surface of the bottom wall of the placement cabin, the hatch cover limiting assembly can limit the hatch cover to close the opening of the placement cabin, when the life-saving member is placed in the placement cabin and the hatch cover closes the opening of the placement cabin, the elastic member is pressed against the life-saving member, and the life-saving member is selected from at least one of a lifebuoy, a life jacket and a life-saving rod.

[0015] Preferably, the lifesaving mechanism comprises a push plate which matches the shape of the inner wall surface of the accommodation cabin, and both side surfaces of the push plate abut against the lifesaving member and the elastic member respectively.

[0016] Preferably, at least one ramp groove is formed on the circumferential side surface of the hatch cover, and the hatch cover limit assembly includes a limit rod rotatably fixed to the main frame, and the end of the limit rod includes a clamping column portion for cooperating with the ramp groove, and the limit rod can move between a first state in which the clamping column portion is seated in the ramp groove and a second state in which the clamping column portion is detached from the ramp groove.

[0017] Preferably, the hatch cover limit assembly also includes a servo motor, a rotating rod, and a connecting rod. The rotating rod is driven by the servo motor to rotate in a plane defined in its length direction, and the rotating rod is formed with a protruding guide column portion. One end of the connecting rod is locked to one end of the limit rod, and a long hole portion is formed to cooperate with the guide column portion. The servo motor can actuate the limit rod to change between the first state and the second state via the rotating rod and the connecting rod.

[0018] Preferably, the limiting rods include at least two, and the guide column portions are respectively formed on both sides of the rotating shaft of the rotating rod.

[0019] Based on the common sense in the art, the above-mentioned preferred implementation modes can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0020] The surface rescue boat and raft designed in the present disclosure can adapt to the operation environment of unstable water surface. In addition, after performing different operations on the propulsion mechanism located on the opposite side, the surface rescue boat and raft can realize various steering operations. This arrangement of the propulsion mechanism on the opposite side allows the surface rescue boat and raft to realize steering without requiring additional space, and at the same time, this arrangement is also easy for rescue personnel to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to better understand the above and other purposes, features, advantages and functions of the present disclosure, reference may be made to the preferred embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present disclosure and have no limiting effect on the scope of the present disclosure, and the components in the drawings are not drawn to scale.

[0022] Figure 1 is a schematic structural diagram of the front side of a water rescue craft according to a preferred embodiment of the present disclosure;

[0023] Figure 2 is a cross-sectional schematic diagram of a surface rescue craft according to a preferred embodiment of the present disclosure;

[0024] Figure 3 yes Figure 1 , 2 A structural diagram of a propulsion mechanism;

[0025] Figure 4 is a cross-sectional schematic diagram of the propulsion mechanism;

[0026] Figure 5 It is a partial structural diagram of the propulsion mechanism;

[0027] Figure 6 It is a partial structural diagram of the propulsion mechanism;

[0028] Figure 7 yes Figure 1 , 2 A structural diagram of a propulsion mechanism;

[0029] Figure 8 , 9 It is a schematic diagram of the structure of the propulsion mechanism of the surface rescue craft under different water level conditions;

[0030] Fig.10 yes Figure 1 , 2 A schematic cross-sectional view of a life-saving mechanism;

[0031] Fig.11 yes Figure 1 , 2 A schematic diagram of the partial structure of the life-saving mechanism;

[0032] Fig.12 is a cross-sectional schematic diagram of the lifesaving mechanism when the limiting rod is in a first state;

[0033] Fig.13 It is a cross-sectional schematic diagram of the lifesaving mechanism when the limiting rod is in the second state. DETAILED DESCRIPTION

[0034] Next, the disclosed concept of the present disclosure will be described in detail with reference to the accompanying drawings. Described here are only preferred embodiments according to the present disclosure, and those skilled in the art may think of other ways to implement the present disclosure on the basis of the preferred embodiments, and the other ways also fall within the scope of the present disclosure. In the following specific description, directional terms such as "upper", "lower", "inner", "outer", "longitudinal", "horizontal", etc. are used with reference to the directions described in the accompanying drawings. The components of the embodiments of the present disclosure can be placed in a variety of different directions, and the directional terms are used for illustrative purposes and are not restrictive.

[0035] In the present disclosure, the water surface rescue craft 1 can be used for water surface rescue operations, water surface pollution cleaning operations, and the like.

[0036] Figure 1 A schematic structural diagram of the front side of the water rescue craft 1 is shown, and the viewing angle corresponds to the upper viewing angle when the water rescue craft 1 is located on the water surface; Figure 2 A schematic cross-sectional view of a surface rescue craft 1 is shown. Figure 1 The schematic diagram of the surface rescue craft 1 cut from the middle position in the thickness direction is shown at an angle of .

[0037] See also Figure 1 , 2 The water rescue boat 1 includes a main frame 10, a propulsion mechanism 20, etc. The main frame 10 can be made of HDPE (high-density polyethylene) as the main material. The main part of the main frame 10 can be made in an integrated manner to prevent water leakage. Figure 1 The main frame 10 is preferably prepared into a structure having a substantially elliptical front shape, or other structures not shown. More preferably, the outer edges of the opposite sides of the main frame 10 in one direction are arc-shaped, and the opposite sides in another direction orthogonal to the above direction are flat (see Figure 1 , 2 ). Several grips 14 are optionally provided at the outer edge of one side of the flat plate-shaped area of ​​the main frame 10 for the drowning person to hold. In order to prevent accidents, the grips 14 should be misaligned with the propeller 22.

[0038] See also Figure 1-2 The main frame 10 is provided with first accommodating chambers 11 on opposite sides of the main frame 10 in the first direction, and the first accommodating chambers 11 are closed by grilles 13. The grilles 13 are preferably also made of HDPE. The grilles 13 can be fixed to the main part of the main frame 10 by one or more structures such as screws, buckles, etc. Preferably, the arrangement direction of the pores on the grilles 13 is parallel to the support axis of the propeller 22 (see Figure 2 ) to reduce the severe erosion of the grid 13 by the water flow during the operation of the propeller 22.

[0039] In addition, optionally, a plurality of embedded grips 15 are provided at positions near the outer edges of the upper and lower surfaces in the thickness direction of the main frame 10 (corresponding to the surface of the main frame 10 that is exposed to the water surface and the surface that is immersed in the water surface). Such grips 15 are convenient for people who fall into the water to grab and climb to the upper surface of the water rescue boat 1, and can also be used as handrails for people riding the water rescue boat 1.

[0040] Figure 3 Shows the corresponding Figure 2 A schematic diagram of the upper half of the propulsion mechanism 20; Figure 4 A mid-section view of the propulsion mechanism 20 is shown; Figure 5 from Figure 3 A schematic diagram of a bottom partial structure of the propulsion mechanism 20 is shown in a direction substantially opposite to the viewing direction; Figure 6 A schematic structural diagram of the rotating base 33 of the propulsion mechanism 20 is shown; Figure 7 The structural schematic diagram of the propulsion mechanism 20 is shown from the second end of the propulsion arm 21. Figure 1 , 2 The propulsion mechanism 20 of the water surface rescue craft 1 will be described.

[0041] like Figure 2 , 4 As shown, the propulsion mechanism 20 of the water rescue boat 1 is accommodated in the first accommodating chamber 11, and is composed of a propulsion arm 21 and a propeller 22. The propulsion mechanism 20 may optionally be provided with a deflector 23 located at the periphery of the propeller 22. Figure 2-4 The propulsion arm 21 of the propulsion mechanism 20 is in a bent form. It should be noted that the "propulsion arm 21" of the present disclosure is not just a support arm for supporting the propeller 22, and it may include Figure 2-4 The propeller 22 shown includes a support shaft, a drive motor, and a support frame (or support column, support plate) that fixes the drive motor, support shaft, etc. to the main frame 10.

[0042] The propeller 22 is rotatably fixed to the first end of the propulsion arm 21. Figure 3-5 Combined with Figure 7 The second end of the propulsion arm 21 is rotatably fixed to the main frame 10 through a ratchet pawl mechanism 30. Figure 4 According to the present disclosure, the rotation plane S1 of the propeller 22 and the rotation plane S2 of the propulsion arm 21 are set to form an angle θ of 80° to 105°, and the rotation range of the propulsion arm 21 is limited by the ratchet and pawl mechanism 30 .

[0043] See also Figure 8 , 9, which shows a schematic diagram of the position of the propulsion mechanism 20 of the surface rescue boat 1 under different water level conditions. The heavier propeller 22 will be driven by gravity to drive the propulsion arm 21 to rotate around its second end. When the surface rescue boat 1 is put into the water, the propeller 22 automatically immerses in the water and drives the propulsion arm 21 to rotate in the direction of floating (see Figure 8 Specifically, when the propeller 22 of the water rescue boat 1 is completely immersed in the water, the position of the propeller 22 (propulsion mechanism 20) changes as follows: Figure 8 As shown, when the propeller 22 is completely out of the water, the position of the propeller 22 (propulsion mechanism 20) changes to Fig. 9 When the propeller 22 tilts toward the water due to its own gravity, it drives the ratchet 31 (described in detail below) to rotate. When the propeller 22 rotates to a certain angle, it engages with the ratchet 32 ​​(described in detail below), thereby ensuring that the propulsion mechanism 20 is in a non-swaying state when working, and realizes single-direction forward movement.

[0044] Preferably, the ratchet pawl mechanism 30 is configured such that when the propeller 22 is completely immersed in water and completely out of water, the ratchet 31 of the ratchet pawl mechanism 30 is respectively located at two extreme positions of its rotation range. Optionally, the rotation range of the ratchet 31 of the ratchet pawl mechanism 30 is set within 60°.

[0045] According to the above surface rescue boat 1, when it is in an area with turbulent water flow, under the action of the propeller 22's own gravity, the propeller 22 will not be affected by various waves and will not leave the water surface, ensuring that the power mechanism of the surface rescue boat 1 can operate normally. In addition, with the help of the limiting effect of the ratchet and pawl mechanism 30 that acts synchronously with the propeller 22 (propulsion arm 21), the heavier propeller 22 will not rotate too much around the second end of the propulsion arm 21 (ratchet and pawl mechanism 30) after being immersed in the water, ensuring that the propeller 22 is always at an angle that can efficiently propel the surface rescue boat 1 forward / backward.

[0046] exist Figure 3-7 In the example, the ratchet pawl mechanism 30 includes a ratchet 31 that rotates synchronously with the second end of the propulsion arm 21, and a pawl 32 fixed to the main frame 10. Optionally, the ratchet pawl mechanism 30 also includes Figure 6 The rotating base 33 and Figure 4-5 The rotating column 34 shown, wherein the upper end of the rotating base 33 can be locked to the second end of the propulsion arm 21 by means of bolts shown or welding not shown. The rotating column 34 is locked on the rotating base 33 and extends from the lower end of the rotating base 33 to fix the ratchet 31. Figure 5-6 The rotating column 34 and the rotating base 33 can be matched with each other by the key shown ( Figure 6There are two slots for accommodating keys at the position for placing the rotating column 34, or the ratchet 31 can be fixed to each other in the form of threaded engagement (not shown). Figure 4 , 5 As shown, it is directly fixed on the rotating column 34. Compared with the direct fixing method between the propulsion arm 21 and the ratchet 31, the method in which the propulsion arm 21 is indirectly fixed to the ratchet 31 through the above-mentioned rotating base 33 and the rotating column 34 is easier to maintain the stable support of the propulsion system. This is mainly reflected in that the relatively large-sized rotating base 33, the bottom area of ​​the propulsion arm 21, etc., enable a larger contact area between the main frame 10 of the surface rescue raft 1 and the propulsion mechanism 20, which will be beneficial for the main frame 10 to firmly fix the propulsion mechanism 20. In addition, this decentralized combination mechanism allows the assembler to achieve the matching relationship of the entire propulsion mechanism 10 by fine-tuning the position of each component during the assembly process.

[0047] It should be noted that, although not shown, the ratchet pawl mechanism 30 of the present disclosure may also be provided with an unlocking mechanism for unlocking the abutting relationship between the ratchet 31 and the pawl 32. The unlocking mechanism is a conventional structure in the art and will not be described in detail herein.

[0048] In order to prevent the rotating column 34 from accidentally moving, the ratchet pawl mechanism 30 is further provided with a limiting member 35 detachably fixed below the rotating base 33. The limiting member 35 can be as follows: Figure 4 The fixing shown is directly on the main frame 10. Figure 6 Combined with Figure 3-5 The side of the rotating base 33 is formed with a placement groove 33A that matches the rotating column 34. The limiting member 35 has an end surface that matches the side shape of the rotating column 34. Figure 4 As shown, when the rotating column 34 and the limiting member 35 are fixed, the end surface of the limiting member 35 abuts against the side surface of the rotating column 34, thereby preventing the rotating column 34 from accidentally falling off.

[0049] Fig.10 Shows Figure 1 , 2 A cross-sectional schematic diagram of a lifesaving mechanism 40; Fig.11 is a schematic diagram showing a partial structure near the inner surface of the bottom wall of the placement cabin 41 from the internal perspective of the placement cabin 41 of the lifesaving mechanism 40; Fig.12 is a cross-sectional schematic diagram of the lifesaving mechanism 40 when the limiting rod 441 of the lifesaving mechanism 40 is in a first state; Fig.13 4 is a cross-sectional schematic diagram of the lifesaving mechanism 40 when the limiting rod 441 is in the second state. Figure 10-13 as well as Figure 1 , 2 The lifesaving mechanism 40 of the water surface rescue craft 1 will be described.

[0050] See also Figure 2 The main frame 10 has a second accommodating cavity 12 on at least one side of the main frame 10 in the second direction. Figure 2 In the example of , the position of the second accommodating chamber 12 is misaligned with the position of the first accommodating chamber 11 used to accommodate the propulsion mechanism 20. In this example, the second direction defined by the second accommodating chamber 12 and the first direction defined by the first accommodating chamber 11 are set to be orthogonal to each other, which will help to distribute the heavy accessories of the surface rescue craft 1 around it.

[0051] See also Figure 10-13 According to the surface rescue raft 1 disclosed in the present invention, there is a lifesaving mechanism 40 that can be placed on the above-mentioned second accommodating chamber 12. Specifically, the lifesaving mechanism 40 includes a placement cabin 41, an elastic member 42, a lifesaving member (not shown in the figure), a hatch 43 and a hatch limit assembly 44. The placement cabin 41 is fixed to the main frame 10. One end of the elastic member 42 is fixed to the inner surface of the bottom wall of the placement cabin 41. The hatch limit assembly 44 can limit the hatch 43 to close the opening of the placement cabin 41. When the lifesaving member is placed in the placement cabin 41 and the hatch 43 closes the opening of the placement cabin 41, the hatch 43 compresses the lifesaving member and then compresses the elastic member 42. The lifesaving member can be selected from at least one of a lifebuoy, a life jacket, and a life-saving rod. The lifebuoy and the life jacket can select conventional self-inflating lifebuoys, life jackets, etc.

[0052] See also Fig.10 , 11 The lifesaving mechanism 40 may be provided with a push plate 45, and the push plate 45 and the inner wall surface of the placement chamber 41 are matched in shape. The two side surfaces of the push plate 45 respectively abut against the lifesaving member and the elastic member 42. After the pressure state of the elastic member 42 is released, the elastic member 42 can smoothly push the lifesaving member out of the placement chamber 41 through the push plate 45.

[0053] See also Fig.10 , 12 -13, the circumferential side surface of the hatch cover 43 is preferably formed with at least one inclined groove 43A. The hatch cover stop assembly 44 includes a stop rod 441 rotatably fixed to the main frame 10. The end of the stop rod 441 includes a clamping column portion 441A for cooperating with the inclined groove 43A. The stop rod 441 can be in a first state ( Fig.12 ) and the second state where the clamping column portion 441A is separated from the ramp groove 43A ( Fig.13 ). The limiting rod 441 can be driven directly or indirectly by a power output unit. Here, the "slope" of the ramp groove 43A has the effect of gently guiding the clamping column portion 441A of the limiting rod 441 to enter the ramp groove 43A or to disengage from the ramp groove 43A.

[0054] exist Figure 10-13In the example shown, which is indirectly driven by the power output unit, the hatch cover stop assembly 44 is provided with a steering gear 442, a rotating rod 443, a connecting rod 444, etc. The rotating rod 443 is driven by the steering gear 442 to rotate in a plane defined in its length direction. According to the inventor's test, the steering gear 442 can be selected from the RM-SV-40 model version provided by the ROVMAKER manufacturer, which provides a rated torque of 3Nm and can achieve self-rotation.

[0055] The rotating rod 443 is formed with a protruding guide column portion 443A. One end of the connecting rod 444 is locked to one end of the limiting rod 441, and is formed with a long hole portion 444A that cooperates with the guide column portion 443A. The steering engine 442 can actuate the limiting rod 441 via the rotating rod 443 and the connecting rod 444. Fig.12 The first state shown (the clamping column portion 441A is seated in the slope groove 43A) and Fig.13 The second state (the clamping column portion 441A is separated from the slope groove 43A) is shown.

[0056] exist Figure 10-13 In the example shown, the limiting rods 441 are arranged in pairs, and guide pillars 443A are formed on both sides of the rotation axis of the rotating rod 443. This symmetrical arrangement of the limiting rods 441 ensures that at least one radially opposite side of the hatch cover 43 is limited by the limiting rods 441 (the clamping pillars 441A), thereby preventing the hatch cover 43 from accidentally falling off.

[0057] Back to Figure 1 , 2 In the preferred embodiment shown, a pair of second accommodating chambers 12 located on opposite sides of the second direction are formed on the main frame 10. A hollow cavity is also formed at the center of the main frame 10 (see Figure 2 The hollow cavity is used to accommodate the steering engine 442 of the lifesaving mechanism 40. The steering engine 442 is built-in to avoid obstruction by foreign objects, ensuring that the steering engine 442 can operate normally and actuate the lifesaving member to pop out.

[0058] The propulsion mechanism 20 and the life-saving mechanism 40 in the present disclosure can be remotely controlled by a wireless remote control device not shown. It can be understood that when the propellers 22 of the propulsion mechanisms 20 on both sides of the water rescue boat 1 are in the same direction and there is a difference in the rotation speed, the water rescue boat 1 can turn and travel; when the propellers 22 of the propulsion mechanisms 20 on both sides of the water rescue boat 1 are in opposite directions, the water rescue boat 1 can rotate in situ, so the water rescue boat 1 has high flexibility. For the life-saving mechanism 40, the driver controls the remote control device, drives the steering engine 442 to start and drives the limit rod 441 to rotate, and then the hatch 43 can be opened. The compressed elastic member 42 is released from the compressed state, and the life-saving parts in the placement cabin 41 are automatically pushed out for use by relevant personnel.

[0059] The protection scope of the present disclosure is limited only by the claims. Thanks to the teachings of the present disclosure, those skilled in the art will easily recognize that alternative structures of the structures disclosed in the present disclosure can be used as feasible alternative embodiments, and the embodiments disclosed in the present disclosure can be combined to produce new embodiments, which also fall within the scope of the appended claims.

[0060] Description of reference numerals:

[0061] Surface rescue craft: 1.

[0062] Main frame:10.

[0063] First accommodating chamber: 11.

[0064] Second accommodating chamber: 12.

[0065] Grille:13.

[0066] Main frame grab handles: 14, 15.

[0067] Propulsion mechanism:20.

[0068] Propulsion Arm:21.

[0069] Propellers:22.

[0070] Ratchet and pawl mechanism:30.

[0071] Ratchet:31.

[0072] Pawls:32.

[0073] Swivel Base:33.

[0074] Mounting slot for rotating base: 33A.

[0075] Rotating columns:34.

[0076] Limited to: 35.

[0077] Life-saving agencies: 40.

[0078] Accommodation cabins: 41.

[0079] Elastics:42.

[0080] Hatch:43.

[0081] Hatch cover ramp groove: 43A. Hatch cover stop assembly: 44.

[0082] Limit rod:441.

[0083] The clamping column part of the limit rod: 441A.

[0084] Servo:442.

[0085] Rotating rod:443.

[0086] Guide column part of the rotating rod: 443A.

[0087] Connecting rod:444.

[0088] Long hole portion of connecting rod: 444A.

[0089] Push Plate:45.

Claims

1. A surface rescue craft, comprising: A main frame, wherein the main frame is provided with first accommodating cavities on opposite sides of the main frame in a first direction, and the first accommodating cavities are closed by grilles, and the main frame further comprises a second accommodating cavity located on at least one side of the main frame in a second direction; A propulsion mechanism, the propulsion mechanism is accommodated in the first accommodating chamber and comprises a propulsion arm and a propeller, the propulsion arm is in a bent form, and the first end of the propulsion arm is rotatably fixed to the propeller, and the second end of the propulsion arm is rotatably fixed to the main frame through a ratchet and pawl mechanism, wherein the rotation plane of the propeller and the rotation plane of the propulsion arm form an angle of 80° to 105°, and the rotation range of the propulsion arm is limited by the ratchet and pawl mechanism; as well as A lifesaving mechanism is located on the second accommodating cavity, and the lifesaving mechanism includes a placement cabin, an elastic member, a lifesaving member, a hatch cover and a hatch cover limiting assembly, wherein the placement cabin is fixed to the main frame, one end of the elastic member is fixed to the inner surface of the bottom wall of the placement cabin, and the hatch cover limiting assembly can limit the hatch cover to close the opening of the placement cabin. When the lifesaving member is placed in the placement cabin and the hatch cover closes the opening of the placement cabin, the elastic member is pressed against the lifesaving member, and the lifesaving member is selected from at least one of a lifebuoy, a life jacket, and a lifesaving rod. At least one ramp groove is formed on the circumferential side surface of the hatch cover, and the hatch cover limiting assembly includes a limiting rod rotatably fixed to the main frame, and the end of the limiting rod includes a clamping column part for cooperating with the ramp groove, and the limiting rod can change between a first state in which the clamping column part is seated on the ramp groove and a second state in which the clamping column part is detached from the ramp groove.

2. The surface rescue craft according to claim 1, wherein: The ratchet and pawl mechanism comprises a ratchet wheel which rotates synchronously with the second end of the propulsion arm, and a pawl which is fixed on the main body frame.

3. The surface rescue craft according to claim 2, wherein: The ratchet and pawl mechanism is configured such that when the propeller is completely immersed in water and completely out of water, the ratchet is located at two extreme positions of its rotation range respectively.

4. The water rescue craft according to claim 2, wherein: The ratchet and pawl mechanism further comprises a rotating base and a rotating column, wherein the upper end of the rotating base is locked to the second end of the propulsion arm, and the rotating column is locked on the rotating base and extends from the lower end of the rotating base to fix the ratchet.

5. The surface rescue craft according to claim 4, wherein: The ratchet pawl mechanism also includes a limiting member detachably fixed under the rotating base, a side surface of the rotating base is formed with a placement groove that cooperates with the rotating column, and the limiting member includes an end surface that cooperates with the side shape of the rotating column. When the rotating column and the limiting member are fixed, the end surface of the limiting member abuts against the side surface of the rotating column.

6. The water rescue craft according to claim 1, wherein: The lifesaving mechanism comprises a push plate which matches the shape of the inner wall surface of the accommodation cabin, and the two side surfaces of the push plate respectively abut against the lifesaving member and the elastic member.

7. The surface rescue craft according to claim 1, wherein: The hatch cover limit assembly also includes a servo, a rotating rod, and a connecting rod. The rotating rod is driven by the servo to rotate in a plane defined in its length direction, and the rotating rod is formed with a protruding guide column portion. One end of the connecting rod is locked to one end of the limit rod, and a long hole portion is formed to cooperate with the guide column portion. The servo can actuate the limit rod to change between the first state and the second state via the rotating rod and the connecting rod.

8. The surface rescue craft according to claim 7, wherein: The limiting rods include at least two, and the guide column parts are respectively formed on both sides of the rotating shaft of the rotating rod.

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