A rescue boat with an impact-resistant lifting platform

Abstract

The present invention relates to a rescue boat with an impact-resistant lifting platform, comprising: a hull, an impact-resistant lifting device, and a rescue box, wherein the impact-resistant lifting device comprises: a lifting assembly and an impact-resistant assembly; the lifting assembly drives the rescue box to lift and move; the impact-resistant assembly comprises a double-rod hydraulic cylinder connected to the lifting assembly, the double-rod hydraulic cylinder comprises two hydraulic chambers, each hydraulic chamber is provided with a piston rod, two groups of pilot sequence valves are provided between the two hydraulic chambers, the oil inlet and the oil outlet of the pilot sequence valve are respectively connected to the two hydraulic chambers through a high-pressure oil pipe, and the connection directions of the two groups of pilot sequence valves are opposite; the rescue box is connected to the two piston rods, and the rescue box transmits the external impact pressure to the impact-resistant assembly through the piston rod, and the impact-resistant assembly drives the rescue box to move in an impact-resistant manner after being subjected to the external impact pressure. The present invention meets the lifting and rescue needs of a long stroke, and has a certain impact resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of rescue boats, in particular to a rescue boat with an impact-resistant lifting platform. Background Art

[0002] With the development of science and technology and the in-depth research of human beings on unmanned systems, unmanned catamarans have broad application prospects in the field of search and rescue. However, compared with the rapid development of unmanned catamaran technology, the research on the lifting technology of the search and rescue platform of unmanned catamarans is relatively backward. The platform lifting method of existing unmanned catamarans is mostly hoisting. When encountering severe sea conditions, this platform lifting method is difficult to resist the impact of waves, and the platform is difficult to lift, which is very likely to cause equipment damage and rescue personnel safety problems.

[0003] Patent CN113002693A discloses a foldable catamaran whose retracting and launching device is composed of a symmetrical hinged four-bar mechanism. After unfolding, the retracting and launching system can form a truss structure with high strength and rigidity. However, due to the volume limitation of the catamaran, the hinged four-bar mechanism is small in size, the lifting and lowering stroke of the retracting and launching device is small, and the stability is poor, and it cannot carry people who fall into the water; Patent CN113428321A discloses a rescue and salvage ship with a semi-submersible lifting platform. The vertical motor drives the gear, screw and lifting actuator to move, so that the rescue and salvage platform can complete the lifting and moving. However, there is no anti-impact device on the hull, and it is difficult to resist the unstable wind and waves at sea. Summary of the invention

[0004] To this end, the technical problem to be solved by the present invention is to overcome the problem that the lifting platform in the rescue ship in the prior art has a short stroke and lacks impact resistance, and to provide a rescue ship with an impact-resistant lifting platform to meet the long-stroke lifting and rescue needs, and have certain impact resistance and can withstand unstable winds and waves at sea.

[0005] In order to solve the above technical problems, the present invention provides a rescue boat with an impact-resistant lifting platform, comprising: a hull, an impact-resistant lifting device arranged on the hull, and a rescue box driven by the impact-resistant lifting device, wherein the impact-resistant lifting device comprises: a lifting component and an impact-resistant component, wherein:

[0006] The lifting assembly drives the rescue box to move up and down;

[0007] The anti-shock assembly includes a double-rod hydraulic cylinder connected to the lifting assembly, the double-rod hydraulic cylinder includes two hydraulic chambers, each of the hydraulic chambers is provided with a piston rod, and two groups of pilot sequence valves are provided between the two hydraulic chambers, the oil inlet and the oil outlet of the pilot sequence valve are respectively connected to the two hydraulic chambers through high-pressure oil pipes, and the communication directions of the two groups of pilot sequence valves are opposite;

[0008] The rescue box is connected to the two piston rods. The rescue box transmits external impact pressure to the anti-impact component through the piston rods. After the anti-impact component is subjected to the external impact pressure, it drives the rescue box to move in an anti-impact manner.

[0009] In one embodiment of the present invention, when the rescue box is hit by waves, the hydraulic oil in one of the hydraulic chambers in the double-rod hydraulic cylinder is squeezed, the oil pressure increases, and the hydraulic oil in the chamber flows to the other hydraulic chamber through the pilot sequence valve. The two piston rods move synchronously correspondingly and drive the rescue box connected to the piston rods to move as a whole.

[0010] In one embodiment of the present invention, the pilot valve in the pilot-operated sequence valve is provided with a certain anti-shock pressure. When the oil pressure in one hydraulic chamber exceeds the anti-shock pressure set by the pilot valve in the pilot-operated sequence valve, the hydraulic oil in the hydraulic chamber flows to another hydraulic chamber through the high-pressure oil pipe.

[0011] In one embodiment of the present invention, the lifting assembly comprises:

[0012] Screw;

[0013] A lifting platform is sleeved on the screw rod and is provided with an internal thread meshing with the screw rod. When the screw rod rotates, the lifting platform is driven to move along the axial extension direction of the screw rod;

[0014] The driving mechanism comprises a coupling connected to the screw rod and a driving motor driving the coupling, wherein the screw rod is driven to rotate through the coupling.

[0015] In one embodiment of the present invention, bearing seats supporting the screw and connected to the hull are provided at both ends of the screw.

[0016] In one embodiment of the present invention, a groove for accommodating a lifting assembly is provided on the inner side wall of the hull, and the driving mechanism is arranged inside the hull.

[0017] In one embodiment of the present invention, the hull is a catamaran structure, and the impact-resistant lifting platform is arranged between the two hulls.

[0018] In one embodiment of the present invention, at least one group of the anti-shock lifting devices is arranged on each hull, and the rescue box is synchronously driven to move by multiple groups of the anti-shock lifting devices.

[0019] In one embodiment of the present invention, the rescue box is connected to the piston rod through a handrail rod, and a clamping boss is provided at the connecting portion between the handrail rod and the piston rod.

[0020] In one embodiment of the present invention, the rescue box is a mesh hollow structure.

[0021] The above technical solution of the present invention has the following advantages compared with the prior art:

[0022] The rescue boat with an impact-resistant lifting platform described in the present invention is provided with a lifting assembly to drive the rescue box to lift and move, so that the rescue box can move below the water surface, and the rescue box is driven to lift and move on the water surface by the lifting assembly, so as to realize the salvage action of the rescue box on the water surface, and the lifting assembly is provided to meet the lifting and rescue needs of a long stroke; an impact-resistant assembly is provided, which is respectively connected to the rescue box through two piston rods in the double-rod hydraulic rod, and one-way communication between two hydraulic chambers is respectively realized through two groups of pilot sequence valves. In this way, when the rescue box is impacted by unstable wind and waves at sea, the rescue box transmits the external impact pressure to the impact-resistant assembly through the piston rod, and the impact-resistant assembly drives the rescue box to move in an impact-resistant manner after being impacted by the external impact pressure, wherein one hydraulic chamber of the two hydraulic chambers is filled with liquid and the other hydraulic chamber is filled with liquid, thereby realizing the synchronous movement of the two piston rods, so that the rescue box has a certain impact resistance and can withstand unstable wind and waves at sea. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 It is a schematic diagram of the overall structure of a rescue boat with an impact-resistant lifting platform according to the present invention;

[0025] Figure 2 It is a schematic structural diagram of the impact-resistant lifting device of the present invention;

[0026] Figure 3 It is a schematic diagram of the hydraulic system of the impact-resistant assembly of the present invention.

[0027] Explanation of the reference numerals in the drawings in the specification: 1. Hull; 2. Anti-impact lifting device; 21. Screw; 22. Bearing seat; 23. Lifting platform; 24. Coupling; 25. Driving motor; 26. Double-rod hydraulic cylinder; 27. Piston rod; 28. Pilot-operated sequence valve; 3. Rescue box; 4. Handrail. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0029] Reference Figure 1As shown, the present invention discloses a rescue ship with an impact-resistant lifting platform, comprising: a hull 1, an impact-resistant lifting device 2 arranged on the hull 1, and a rescue box 3 driven by the impact-resistant lifting device 2. The rescue box 3 is lifted and moved by the impact-resistant lifting device 2, so that the rescue box 3 can be moved above and below the water surface to realize the salvage action of the rescue box 3 on the water surface. The impact-resistant lifting device 2 can drive the rescue box 3 to move with the impact, so that the rescue box 3 has a certain impact resistance and can withstand unstable wind and waves at sea.

[0030] Reference Figure 2 As shown, the anti-impact lifting device 2 includes: a lifting component and an anti-impact component, wherein:

[0031] The lifting assembly drives the rescue box 3 to move up and down, and the lifting assembly includes: a screw 21, a bearing seat 22 that supports the screw 21 and is connected to the hull 1, a lifting platform 23 sleeved on the screw 21, a coupling 24 connected to the end of the screw 21, and a driving motor 25 connected to the coupling 24; the screw 21 provides a moving space for the lifting platform 23. Since the lifting assembly in this embodiment needs to drive the rescue box 3 to move up and down, in this embodiment, the screw 21 is extended in the vertical direction, and a support is provided on both sides of the screw 21. The bearing seat 22 of the screw 21, the lifting platform 23 is provided with an internal thread meshing with the screw 21, the lifting platform 23 and the screw 21 form a ball screw pair, the screw 21 is connected to the output end of the driving motor 25 through the coupling 24, the driving motor 25 drives the screw 21 to rotate, and converts the rotation of the screw 21 into the horizontal movement of the lifting platform 23, the lifting platform 23 moves along the axial extension direction of the screw 21, and the driving motor 25 drives the rotation direction of the screw 21 to change, thereby realizing the change of the moving direction of the lifting platform 23;

[0032] The anti-impact component includes a double-rod hydraulic cylinder 26 connected to the lifting component, the double-rod hydraulic cylinder 26 includes two hydraulic chambers, each of the hydraulic chambers is provided with a piston rod 27, the two piston rods 27 have opposite protruding directions relative to the hydraulic chamber, and the two piston rods 27 are arranged on the same straight line; two groups of pilot sequence valves 28 are arranged between the two hydraulic chambers, the oil inlet and oil outlet of the pilot sequence valve 28 are respectively connected to the two hydraulic chambers through high-pressure oil pipes, and the connection directions of the two groups of pilot sequence valves 28 are opposite; the rescue box 3 is connected to the two piston rods 27, and the rescue box 9 transmits the external impact pressure to the anti-impact component through the piston rod 27, and the anti-impact component drives the rescue box 9 to move in an anti-impact manner after being subjected to the external impact pressure.

[0033] Reference Figure 3 As shown, when the rescue box 9 encounters the impact of waves, in the two hydraulic chambers, the hydraulic oil in one hydraulic chamber is squeezed, the oil pressure increases, and the hydraulic oil in the chamber flows to the other hydraulic chamber through the pilot sequence valve 28, ensuring that one hydraulic chamber is filled with liquid and the other hydraulic chamber is discharged with liquid, thereby realizing the synchronous movement of the two piston rods 27 and driving the rescue box 3 connected to the piston rod 27 to move as a whole, so that the rescue box 3 has a certain impact resistance and can withstand unstable wind and waves at sea.

[0034] Specifically, in the present embodiment, a pilot sequence valve 28 is arranged on the high-pressure oil pipe connecting the two hydraulic chambers. The pilot valve in the pilot sequence valve 28 can be arranged to have a certain anti-shock pressure, and the pilot sequence valve 28 is controlled not to be opened all the time. Only when the oil pressure in one hydraulic chamber exceeds the anti-shock pressure set by the pilot valve in the pilot sequence valve 28, the hydraulic oil in the hydraulic chamber flows to the other hydraulic chamber through the high-pressure oil pipe. In this way, the rescue box 3 can have a certain anti-shock ability, and not all impacts will cause the rescue box 3 to move. For some small wind and wave impacts, the impact strength will not affect the rigidity of the lifting assembly. At this time, the rescue box 3 does not need to move with the wind and waves. This can also reduce the shaking of the rescue box 3 and improve the comfort level inside the rescue box 3.

[0035] Reference Figure 1 As shown, in this embodiment, the hull 1 is a catamaran structure, including two hulls 1 connected by a connecting plate, the impact-resistant lifting platform is arranged between the two hulls 1, and a groove for accommodating the lifting assembly is opened on the inner wall of the hull 1. The driving mechanism is arranged inside the hull 1 to prevent the driving mechanism from failing due to water ingress.

[0036] Specifically, at least one group of the anti-impact lifting devices 2 is arranged on each hull 1, and the rescue box 3 is synchronously driven to move by multiple groups of anti-impact lifting devices 2. In the present embodiment, two groups of anti-impact lifting devices 2 are arranged on each hull 1, which are respectively arranged on the front and rear sides of the hull 1. The lifting force and the impact force can be dispersed by multiple groups of anti-impact lifting devices 2 to ensure the safety and stability of the anti-impact lifting platform.

[0037] Specifically, the double-rod hydraulic cylinder 26 is horizontally arranged, and the rescue box 3 is vertically arranged. In this embodiment, the rescue box 3 needs to be connected to the piston rod 27 through a handrail rod 4. The handrail rod 4 is a right-angle transfer rod. The connecting part of the handrail rod 4 and the piston rod 27 is provided with a clamping boss. By providing the clamping boss, it is convenient to plug and fix the handrail rod 4 and the piston rod 27 together. After the handrail rod 4 and the piston rod 27 are clamped and connected, the handrail rod 4 and the piston rod 27 are further locked and fixed by bolts.

[0038] Specifically, the rescue box 3 is a mesh hollow structure. After the rescue box 3 rises from the water surface, water leaks out of the rescue box 3 to reduce the weight of the rescue box 3.

[0039] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A rescue boat with an impact-resistant lifting platform, comprising: A hull, an anti-impact lifting device arranged on the hull, and a rescue box driven by the anti-impact lifting device, wherein the anti-impact lifting device comprises: a lifting component, an anti-impact component, wherein: The lifting assembly drives the rescue box to move up and down; the lifting assembly includes: A screw rod, with bearing seats supporting the screw rod and connected to the hull provided at both ends of the screw rod; A lifting platform is sleeved on the screw rod and is provided with an internal thread meshing with the screw rod. When the screw rod rotates, the lifting platform is driven to move along the axial extension direction of the screw rod; A driving mechanism, including a coupling connected to the screw and a driving motor driving the coupling, the screw is driven to rotate by the coupling, a groove for accommodating a lifting assembly is provided on the inner side wall of the hull, and the driving mechanism is arranged inside the hull; The anti-shock assembly includes a double-rod hydraulic cylinder connected to the lifting assembly, the double-rod hydraulic cylinder includes two hydraulic chambers, each of the hydraulic chambers is provided with a piston rod, and two groups of pilot sequence valves are provided between the two hydraulic chambers, the oil inlet and the oil outlet of the pilot sequence valve are respectively connected to the two hydraulic chambers through high-pressure oil pipes, and the communication directions of the two groups of pilot sequence valves are opposite; The rescue box is connected to the two piston rods, and the rescue box transmits the external impact pressure to the anti-impact component through the piston rods. After the anti-impact component is subjected to the external impact pressure, it drives the rescue box to move in an anti-impact manner; When the rescue box is hit by waves, the hydraulic oil in one hydraulic cavity of the double-rod hydraulic cylinder is squeezed, the oil pressure increases, and the hydraulic oil in the cavity flows to the other hydraulic cavity through the pilot sequence valve, and the two piston rods move synchronously correspondingly, and drive the rescue box connected to the piston rods to move as a whole; The pilot valve in the pilot sequence valve is provided with a certain anti-shock pressure. When the oil pressure in one hydraulic cavity exceeds the anti-shock pressure set by the pilot valve in the pilot sequence valve, the hydraulic oil in the hydraulic cavity flows to another hydraulic cavity through the high-pressure oil pipe.

2. The rescue boat with an impact-resistant lifting platform according to claim 1, characterized in that: The hull is a catamaran structure, and the impact-resistant lifting platform is arranged between the two hulls.

3. The rescue boat with an impact-resistant lifting platform according to claim 2, characterized in that: At least one group of the anti-shock lifting devices is arranged on each hull, and the rescue box is synchronously driven to move by multiple groups of the anti-shock lifting devices.

4. The rescue boat with an impact-resistant lifting platform according to claim 1, characterized in that: The rescue box is connected to the piston rod through a handrail rod, and a clamping boss is provided at the connecting portion between the handrail rod and the piston rod.

5. The rescue boat with an impact-resistant lifting platform according to claim 1, characterized in that: The rescue box body is a mesh hollow structure.

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