A simple inflatable raft

Abstract

The invention relates to the technical field of inflatable rafts, and discloses a simple inflatable raft, including four rotating positioning mechanisms, wherein a first transverse hollow shell fixedly mounted on the top of the wing raft and having a hollow structure inside is arranged inside the raft, an inner rotating column rotatably mounted inside the first transverse hollow shell and capable of driving a first rotating shaft to rotate, a longitudinal insertion rod capable of being inserted into the inner rotating column to prevent the inner rotating column from rotating, and a first spiral spring that generates downward elastic pressure on the longitudinal insertion rod. The simple inflatable raft can adaptively adjust the width of the woven bag by means of winding and unwinding, thereby changing the working state of the device, and the user can adjust the load-bearing size of the woven bag according to the specific load to improve the adaptability of the device.

Description

Technical Field

[0001] The invention relates to the technical field of inflatable rafts, in particular to a simple inflatable raft. Background Art

[0002] With the rapid development of water transportation industry, small water inflatable raft products are also changing with each passing day. These inflatable raft products are mainly used for the transportation of light goods or emergency disaster relief. They are must-have tools for large and medium-sized ships, commonly used tools for fishermen or tourism industry, and life-saving tools for lifeguards in emergency disaster relief.

[0003] For example, a Chinese patent with publication number "CN202911934U" discloses "a life-saving inflatable raft with simple structure", whose main structure includes a main raft and two wing rafts arranged on both sides of the main raft, the two wing rafts are symmetrical about the raft center of the main raft, an inflation valve is arranged on the main raft, the airflow between the main raft and the wing raft is connected, the two ends of the wing raft are longer than the main raft in the length direction, and a woven net is arranged between the ends of the two wing rafts, and the woven net is fixedly connected to the wing raft. Therefore, the life-saving inflatable raft with simple structure can be reduced to a very small volume when it is ready for use, which is convenient for storage and carrying; when it is needed, the main raft and the wing raft are quickly inflated to form a raft body, and the lifeguard sits on the main raft and paddles to move the raft body, and the protruding ends of the two wing rafts on the raft body first approach the rescuer, and the rescuer can easily grab the woven net and easily climb onto the woven net with the help of the lifeguard to be rescued, which is particularly suitable for water rescue. In addition, due to the structural characteristics of the simple life-saving inflatable raft, if it is used carelessly or is overturned by water, the entire raft body will still have the structural characteristics before overturning after being turned over, and there is no need to overturn the raft body.

[0004] However, since the woven net is rigidly fixed in the wing raft, the distance between the two wing rafts is fixed, and the width of the woven net is also fixed, which makes it impossible to adjust the application range of the device and its adaptability is relatively narrow. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a simple inflatable raft, which can adaptively adjust the width of the woven bag by winding and unwinding, thereby changing the working state of the device. The user can adjust the load-bearing size of the woven bag according to the specific load to improve the adaptability of the device, thereby solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a simple inflatable raft, comprising two wing rafts, two No. 1 rotating shafts respectively located directly above the two wing rafts and capable of rotating, a No. 1 docking plate fixedly installed at the end of the No. 1 rotating shaft, and a woven cloth bag fixed at both sides of the No. 1 rotating shaft body, and also comprising four rotating positioning mechanisms, wherein a No. 1 horizontal hollow shell fixedly installed at the top of the wing raft and having a hollow structure inside is arranged inside, an inner rotating column rotatably installed inside the No. 1 horizontal hollow shell and capable of driving the No. 1 rotating shaft to rotate, a longitudinal insertion rod capable of being inserted into the inner rotating column to prevent the inner rotating column from rotating, and a No. 1 coil spring that produces downward elastic pressure on the longitudinal insertion rod.

[0007] Preferably, the front end and the rear end of the wing raft are provided with a transition slope structure capable of reducing water flow resistance.

[0008] Preferably, a gas storage cavity for reducing weight and storing gas is provided inside the raft.

[0009] Preferably, the rotating positioning mechanism includes a No. 1 transverse hollow shell fixedly installed on the top of the wing raft, the top of the No. 1 transverse hollow shell is provided with a longitudinal hollow shell with an integral structure therewith, the interior of the No. 1 transverse hollow shell is provided with a No. 1 component movable cavity, the interior of the No. 2 component movable cavity is provided with a No. 1 shaft mounting hole connecting the No. 1 component movable cavity is provided at both ends of the No. 1 transverse hollow shell, the circumferential surface of the No. 1 transverse hollow shell is provided with a No. 1 rod body through hole connecting the bottom end of the No. 2 component movable cavity and the middle part of the circumferential surface of the No. 1 component movable cavity, and the top of the longitudinal hollow shell is provided with a No. 2 rod body through hole connecting the top of the No. 2 component movable cavity.

[0010] Preferably, the No. 1 horizontal hollow shell is provided with two rotatable No. 1 rotating shafts through bearings inside the two No. 1 shaft body mounting holes, and the two No. 1 rotating shafts are fixedly provided with rotatable inner rotating columns at one end located inside the movable cavity of the No. 1 component, and the circumferential surface of the inner rotating column is provided with a plurality of annular array-type limiting grooves, one end of one of the No. 1 rotating shafts is fixedly provided with a rotating cap, and one end of the other No. 1 rotating shaft is fixedly provided with a No. 2 docking plate, and the No. 2 docking plate is fixedly connected to the corresponding No. 1 docking plate, and the longitudinal hollow shell is provided with an inner movable plate capable of axial movement along the movable cavity of the No. 2 component inside the movable cavity of the No. 2 component, the bottom end of the inner movable plate is provided with a longitudinal insertion rod which is an integral structure with it and passes through the through hole of the No. 1 rod body, the top end of the inner movable plate is provided with a longitudinal telescopic rod which is an integral structure with it and passes through the through hole of the No. 2 rod body, the longitudinal telescopic rod is provided with a No. 1 coil spring in a compressed state on the outer periphery of the rod body located inside the movable cavity of the No. 2 component, and the top end of the longitudinal telescopic rod is fixedly provided with a force application plate.

[0011] Preferably, the axis center line of the limiting groove and the axis center line of the longitudinal insertion rod are in the same plane, and the structural radius of the limiting groove matches the structural radius of the longitudinal insertion rod.

[0012] Preferably, when the bottom end of the longitudinal insertion rod is inserted into the limiting groove, a gap exists between the bottom end of the inner movable plate and the bottom end of the movable cavity of the second component.

[0013] Preferably, it also includes two combined telescopic mechanisms, which are internally provided with a second transverse hollow shell located between the two wing rafts, two transverse telescopic rods placed inside the second transverse hollow shell and moving away from each other after being subjected to gas and elastic pressure, and a transverse telescopic rod that moves with the transverse telescopic rods and can move the two wing rafts away from each other.

[0014] Preferably, the combined telescopic mechanism includes a No. 2 transverse hollow shell, a No. 3 component active cavity is arranged inside the No. 2 transverse hollow shell, and No. 3 rod body through-holes connecting the two end faces of the No. 3 component active cavity are arranged at both ends of the No. 2 transverse hollow shell, and two piston plates capable of axially moving along the No. 3 component active cavity are arranged inside the No. 3 component active cavity of the No. 2 transverse hollow shell, and a gas compensation channel connecting the external space and the middle area of ​​the No. 3 component active cavity and with an air valve installed inside is arranged in the middle part of the outer circumferential surface of the No. 2 transverse hollow shell, and a transverse telescopic rod passing through the corresponding No. 3 rod body through-hole is fixedly installed on the corresponding end faces of the two piston plates, and a No. 3 docking plate is fixedly installed on the end of each of the transverse telescopic rods, and the two No. 3 docking plates are fixedly installed on the corresponding end faces of the two wing rafts, and a No. 2 coil spring is arranged between the two piston plates.

[0015] Preferably, the initial length of the No. 2 coil spring is greater than the lateral length of the active cavity of the No. 3 component.

[0016] Compared with the prior art, the present invention provides a simple inflatable raft, which has the following beneficial effects:

[0017] By means of winding and unwinding, the width of the woven bag can be adaptively adjusted, thereby changing the working state of the device. The user can adjust the load-bearing size of the woven bag according to the specific load to improve the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention;

[0019] Figure 2 is a three-dimensional cross-sectional view of the wing raft of the present invention;

[0020] Figure 3It is a three-dimensional diagram of the rotary positioning mechanism of the present invention;

[0021] Figure 4 It is a three-dimensional cross-sectional view of the rotary positioning mechanism of the present invention;

[0022] Figure 5 It is a three-dimensional diagram of the inner rotating column in the present invention;

[0023] Figure 6 It is a three-dimensional diagram of the combined telescopic mechanism of the present invention;

[0024] Figure 7 It is a three-dimensional cross-sectional view of the combined telescopic mechanism of the present invention.

[0025] Among them: 1. wing raft; 2. gas storage cavity; 3. No. 1 rotating shaft; 4. No. 1 docking plate; 5. woven cloth bag; 6. rotating positioning mechanism; 61. No. 1 horizontal hollow shell; 62. Longitudinal hollow shell; 63. No. 1 component active cavity; 64. No. 2 component active cavity; 65. No. 1 shaft body mounting hole; 66. No. 1 rod body through hole; 67. No. 2 rod body through hole; 68. Inner rotating column; 69. Limiting groove; 610. No. 1 rotating shaft; 6 11. No. 2 docking plate; 612. rotating cap; 613. inner movable plate; 614. longitudinal insertion rod; 615. longitudinal telescopic rod; 616. force plate; 617. No. 1 coil spring; 7. combined telescopic mechanism; 71. No. 2 transverse hollow shell; 72. No. 3 component movable chamber; 73. No. 3 rod body perforation; 74. gas compensation channel; 75. piston plate; 76. No. 2 coil spring; 77. transverse telescopic rod; 78. No. 3 docking plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0027] See also Figure 1 and Figure 2A simple inflatable raft comprises two wing rafts 1, two rotating shafts 3 which are respectively located directly above the two wing rafts 1 and can rotate, a docking plate 4 which is fixedly installed at the end of the No. 1 rotating shaft 3, and a woven cloth bag 5 which is fixed at both sides of the shaft body of the No. 1 rotating shaft 3. In order to reduce the resistance of water flow, it is necessary to provide the front end and the rear end of the wing raft 1 with a transition slope structure which can reduce the resistance of water flow. In order to increase the buoyancy, it is necessary to provide a gas storage cavity 2 which reduces the weight and stores gas inside the wing raft 1. By using an inflating device to fill the gas storage cavity 2 with gas, the buoyancy of the device can be increased.

[0028] To achieve the roll-up adjustment function of the equipment load area, please refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 Four rotating positioning mechanisms 6 are required, wherein a first transverse hollow shell 61 fixedly mounted on the top of the wing raft 1 and having a hollow structure inside is provided inside, an inner rotating column 68 rotatably mounted inside the first transverse hollow shell 61 and capable of driving the first rotating shaft 3 to rotate, a longitudinal insertion rod 614 capable of being inserted into the inner rotating column 68 to prevent the inner rotating column 68 from rotating, and a first coil spring 617 exerting downward elastic pressure on the longitudinal insertion rod 614, pulling the force plate 616 upward so that the longitudinal insertion rod 614 is retracted. The inner rotating column 68 will drive the No. 1 rotating shaft 610 and the No. 1 rotating shaft 3 to rotate, and the No. 1 rotating shaft 3 will reel in or lay out the woven cloth bag 5 to change the flat area of ​​the woven cloth bag 5. When the woven cloth bag 5 is adjusted to a suitable area, the pressure of the force plate 616 is released, and under the elastic action of the No. 1 coil spring 617, the longitudinal insertion rod 614 is inserted into the new limiting groove 69, thereby realizing the reeling-type adjustment function of the load-bearing area of ​​the equipment.

[0029] For the specific structure of the rotary positioning mechanism 6, please refer to Figure 3 , Figure 4 and Figure 5, comprising a No. 1 transverse hollow shell 61 fixedly mounted on the top of the wing raft 1, a longitudinal hollow shell 62 of an integral structure therewith is arranged on the top of the No. 1 transverse hollow shell 61, a No. 1 component movable cavity 63 is arranged inside the No. 1 transverse hollow shell 61, a No. 2 component movable cavity 64 is arranged inside the No. 1 longitudinal hollow shell 62, No. 1 shaft body mounting holes 65 connected to the No. 1 component movable cavity 63 are arranged at both ends of the No. 1 transverse hollow shell 61, and a No. 1 rod body through hole 66 connected to the bottom end of the No. 2 component movable cavity 64 and the middle of the circumferential surface of the No. 1 component movable cavity 63 is arranged on the circumferential surface of the No. 1 transverse hollow shell 61, The top of the longitudinal hollow shell 62 is provided with a No. 2 rod body through hole 67 connected to the top of the No. 2 component movable cavity 64, and the No. 1 transverse hollow shell 61 is provided with two rotatable No. 1 rotating shafts 610 installed inside the two No. 1 shaft body mounting holes 65 through bearings, and the two No. 1 rotating shafts 610 are fixedly installed with rotatable inner rotating columns 68 at one end located inside the No. 1 component movable cavity 63, and the circumferential surface of the inner rotating column 68 is provided with a plurality of annular array-type limiting grooves 69, one end of one of the No. 1 rotating shafts 610 is fixedly installed with a rotating cap 612, and the other end of the No. 1 rotating shaft 610 is fixedly installed with a rotating cap 612. A second docking plate 611 is fixedly installed at one end of 10, and the second docking plate 611 is fixedly connected to the corresponding first docking plate 4. The longitudinal hollow shell 62 is provided with an inner movable plate 613 that can move axially along the second component movable cavity 64 inside the second component movable cavity 64. The bottom end of the inner movable plate 613 is provided with a longitudinal insertion rod 614 that is an integral structure with it and passes through the first rod body through hole 66. In order to achieve the corresponding insertion of the rod body, it is necessary to make the axial center line of the limiting groove 69 and the axial center line of the longitudinal insertion rod 614 in the same plane, and the structural radius of the limiting groove 69 is the same as that of the first rod body. The structural radius of the longitudinal insertion rod 614 is matched, and the top end of the inner movable plate 613 is provided with a longitudinal telescopic rod 615 which is an integral structure with it and passes through the No. 2 rod body through-hole 67. The longitudinal telescopic rod 615 is sleeved with a No. 1 coil spring 617 in a compressed state on the outer periphery of the rod body inside the No. 2 component movable cavity 64. A force plate 616 is fixedly installed on the top end of the longitudinal telescopic rod 615. In order to have sufficient movement stroke, it is necessary to ensure that when the bottom end of the longitudinal insertion rod 614 is inserted into the limiting groove 69, there is a gap between the bottom end of the inner movable plate 613 and the bottom end of the No. 2 component movable cavity 64.

[0030] To ensure the adaptive spacing of the two rafts 1, see Figure 1 , Figure 6 and Figure 7, it is necessary to set up two combined telescopic mechanisms 7, inside which are provided a second transverse hollow shell 71 located between the two wing rafts 1, and two transverse telescopic rods 77 placed inside the second transverse hollow shell 71 and moving away from each other after being subjected to gas and elastic pressure, and the transverse telescopic rods 77 moving with the transverse telescopic rods 77 and capable of moving the two wing rafts 1 away from each other. When the area of ​​the woven cloth bag 5 is adjusted, an inflation device is used to fill a certain amount of gas into the gas compensation channel 74. Under the joint action of the gas and the second coil spring 76, the two wing rafts 1 will be kept at an adaptive spacing, thereby ensuring the adaptive spacing change of the two wing rafts 1.

[0031] For the specific structure of the combined telescopic mechanism 7, please refer to Figure 6 and Figure 7 , including a second transverse hollow shell 71, wherein a third component active cavity 72 is arranged inside the second transverse hollow shell 71, and a third rod body through hole 73 is arranged at both ends of the second transverse hollow shell 71 to connect the two end surfaces of the third component active cavity 72, and two piston plates 75 capable of axially moving along the third component active cavity 72 are arranged in the second transverse hollow shell 71 inside the third component active cavity 72, and a connecting hole 75 is arranged in the middle of the outer circumferential surface of the second transverse hollow shell 71 to connect the external space and the middle of the third component active cavity 72. The gas compensation channel 74 with a gas valve installed in the area, the corresponding end faces of the two piston plates 75 are respectively fixed with a transverse telescopic rod 77 that passes through the corresponding No. 3 rod body through-hole 73, and the end of each of the transverse telescopic rods 77 is respectively fixed with a No. 3 docking plate 78, and the two No. 3 docking plates 78 are respectively fixedly installed on the corresponding end faces of the two wing rafts 1, and a No. 2 coil spring 76 is placed between the two piston plates 75, and the initial length of the No. 2 coil spring 76 is greater than the lateral length of the No. 3 component active cavity 72.

[0032] When in use, pull the force plate 616 upwards to make the longitudinal insertion rod 614 exit the limiting groove 69, and then rotate the rotating cap 612 in a directional manner. At this time, the inner rotating column 68 will drive the No. 1 rotating shaft 610 and the No. 1 rotating shaft 3 to rotate, and the No. 1 rotating shaft 3 will roll up or lay out the woven cloth bag 5 to change the flat area of ​​the woven cloth bag 5. When the woven cloth bag 5 is adjusted to a suitable area, release the pressure of the force plate 616. Under the elastic action of the No. 1 coil spring 617, the longitudinal insertion rod 614 is inserted into the new limiting groove 69. When the area of ​​the woven cloth bag 5 is adjusted, use an inflation device to fill a certain amount of gas into the gas compensation channel 74. Under the joint action of the gas and the No. 2 coil spring 76, the two wing rafts 1 will be kept at an adaptive spacing, contributing to the stable use of the equipment.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A simple inflatable raft, comprising two wing rafts (1), two first rotating shafts (3) respectively located directly above the two wing rafts (1) and capable of rotating, a first docking plate (4) fixedly mounted on the ends of the first rotating shafts (3), and woven cloth bags (5) fixed on both sides of the shaft bodies of the first rotating shafts (3), characterized in that: Also includes, Four rotating positioning mechanisms (6), each of which is provided with a first transverse hollow shell (61) fixedly mounted on the top of the wing raft (1) and having a hollow structure inside, an inner rotating column (68) rotatably mounted inside the first transverse hollow shell (61) and capable of driving the first rotating shaft (3) to rotate, a longitudinal insertion rod (614) capable of being inserted into the inner rotating column (68) to prevent the inner rotating column (68) from rotating, and a first coil spring (617) for exerting downward elastic pressure on the longitudinal insertion rod (614); The rotary positioning mechanism (6) comprises a first transverse hollow shell (61) fixedly mounted on the top of the wing raft (1); a first transverse hollow shell (61) is provided with a longitudinal hollow shell (62) having an integral structure therewith on the top of the first transverse hollow shell (61); a first component movable cavity (63) is provided inside the first transverse hollow shell (61); a second component movable cavity (64) is provided inside the longitudinal hollow shell (62); first shaft body mounting holes (65) communicating with the first component movable cavity (63) are provided at both ends of the first transverse hollow shell (61); The circumferential surface of the (61) is provided with a No. 1 rod body through hole (66) connecting the bottom end of the No. 2 component movable cavity (64) and the middle of the circumferential surface of the No. 1 component movable cavity (63); the top end of the longitudinal hollow shell (62) is provided with a No. 2 rod body through hole (67) connecting the top end of the No. 2 component movable cavity (64); the No. 1 transverse hollow shell (61) is provided with two rotatable No. 1 rotating shafts (610) through bearings inside the two No. 1 shaft body mounting holes (65); the two No. 1 rotating shafts (610) are fixed at one end inside the No. 1 component movable cavity (63) A rotatable inner rotating column (68) is installed, and the circumferential surface of the inner rotating column (68) is provided with a plurality of annular array-type limiting grooves (69), one end of one of the No. 1 rotating shafts (610) is fixedly installed with a rotating cap (612), and one end of another No. 1 rotating shaft (610) is fixedly installed with a No. 2 docking plate (611), and the No. 2 docking plate (611) is fixedly connected to the corresponding No. 1 docking plate (4), and the longitudinal hollow shell (62) is provided with a plurality of retaining grooves (69) that can be rotated along the axial direction of the No. 2 component active cavity (64) in the interior of the No. 2 component active cavity (64). A movable inner movable plate (613), wherein the bottom end of the inner movable plate (613) is provided with a longitudinal insertion rod (614) which is integrally formed with the inner movable plate (613) and passes through the through hole (66) of the first rod body, and the top end of the inner movable plate (613) is provided with a longitudinal telescopic rod (615) which is integrally formed with the inner movable plate (613) and passes through the through hole (67) of the second rod body, wherein the longitudinal telescopic rod (615) is provided with a No. 1 coil spring (617) in a compressed state on the outer periphery of the rod body located inside the movable cavity (64) of the No. 2 component, and a force application plate (616) is fixedly mounted on the top end of the longitudinal telescopic rod (615).

2. A simple inflatable raft according to claim 1, characterized in that: The front end and the rear end of the wing raft (1) are provided with transition slope structures capable of reducing water flow resistance.

3. A simple inflatable raft according to claim 2, characterized in that: A gas storage cavity (2) for reducing weight and storing gas is arranged inside the wing raft (1).

4. A simple inflatable raft according to claim 3, characterized in that: The axis center line of the limiting groove (69) and the axis center line of the longitudinal insertion rod (614) are located in the same plane, and the structural radius of the limiting groove (69) matches the structural radius of the longitudinal insertion rod (614).

5. A simple inflatable raft according to claim 4, characterized in that: When the bottom end of the longitudinal insertion rod (614) is inserted into the limiting groove (69), a gap exists between the bottom end of the inner movable plate (613) and the bottom end of the movable cavity (64) of the second component.

6. A simple inflatable raft according to any one of claims 1 to 5, characterized in that: The invention also comprises two combined telescopic mechanisms (7), wherein a second transverse hollow shell (71) located between the two wing rafts (1) is arranged inside the second transverse hollow shell (71) and two transverse telescopic rods (77) arranged inside the second transverse hollow shell (71) and moving away from each other after being subjected to gas and elastic pressure, and a third docking plate (78) moving with the transverse telescopic rods (77) and capable of moving the two wing rafts (1) away from each other.

7. A simple inflatable raft according to claim 6, characterized in that: The combined telescopic mechanism (7) comprises a second transverse hollow shell (71), a third component active cavity (72) is arranged inside the second transverse hollow shell (71), two ends of the second transverse hollow shell (71) are provided with third rod body through holes (73) communicating with two end surfaces of the third component active cavity (72), two piston plates (75) capable of axial movement along the third component active cavity (72) are arranged inside the second transverse hollow shell (71) located inside the third component active cavity (72), and the outer circumferential surface of the second transverse hollow shell (71) is provided with a plurality of piston plates (75) each having ... A gas compensation channel (74) is provided in the part, which is connected to the external space and the middle area of ​​the active cavity (72) of the No. 3 component and has an air valve installed inside. The corresponding end surfaces of the two piston plates (75) are respectively fixedly installed with a transverse telescopic rod (77) that passes through the corresponding No. 3 rod body through-hole (73). The end of each of the transverse telescopic rods (77) is respectively fixedly installed with a No. 3 docking plate (78). The two No. 3 docking plates (78) are respectively fixedly installed on the corresponding end surfaces of the two wing rafts (1). A No. 2 coil spring (76) is placed between the two piston plates (75).

8. The simple inflatable raft according to claim 7, characterized in that: The initial length of the No. 2 coil spring (76) is greater than the lateral length of the active cavity (72) of the No. 3 component.

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